09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
Car stereos; Car televisions; Computer hardware and recorded computer software programs sold as a unit for the integration of text, audio, graphics, still images and moving pictures into an interactive delivery for multimedia applications; Digital projectors; Head-up displays (HUDs) for vehicles, namely, transparent electronic displays for providing users with navigational and operational information; Interactive touch screen terminals; Projection screens; Projector lamps; Recorded computer software for use in database management; Remote controls for projectors; Safety and driving assistant system for mobile vehicles and vessels comprised of electronic proximity sensors and switches, high-resolution cameras, integrated circuits for the purpose of imaging processing, and display monitors; Slide projectors; Transparency projection apparatus; Video screens Lamps; Automotive lighting headlights for vehicles; Electrical lighting apparatus for vehicles; Fitted anti-glare devices for automobile headlamps; Headlights for automobile; Laser light projectors; Light bulbs; Light projectors; Lighting apparatus, namely, lighting installations; Lighting installations for vehicles; Lights for automobiles; Lights for vehicles; Vehicle lights Cars; Antitheft devices for vehicles; Automotive interior trim; Brakes for land vehicles; Cup holders for use in vehicles; Custom leather interiors for vehicles; Fitted seat covers for vehicles; Head-rests for vehicle seats; Land vehicles; Land vehicles and structural parts therefor; Metal parts for vehicles, namely, automotive exterior and interior metal decorative and protective trim; Plastic parts for vehicles, namely, automotive exterior and interior plastic extruded decorative and protective trim; Steering units for land vehicles and parts thereof; Upholstery for vehicles
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
Car televisions; Car stereos; Head-up display apparatus for vehicles; Heads-up displays for motor vehicles; Slide projectors; Digital projectors; Transparency projection apparatus; Projection screens; Video screens; Interactive touch screen terminals; Remote controls for projectors; Computer software applications, downloadable; Computer software, recorded; Computer software platforms, recorded or downloadable. Lamps; Light bulbs; Light projectors; Laser light projectors; Lights for automobiles; Lights for vehicles; Vehicle lights; Lighting apparatus for vehicles; Vehicle headlights; Lighting installations for vehicles; Headlights for automobile; Lighting apparatus and installations; Anti-glare devices for vehicles [lamp fittings]. Cars; Land vehicles; Automotive interior trim; Consoles being parts of vehicle interiors; Protective interiors for vehicles; Interior trim parts of automobiles; Head-rests for vehicle seats; Upholstery for vehicles; Fitted vehicle seat covers; Anti-theft devices for vehicles; Cup holders for use in vehicles; Steering units for land vehicles; Structural parts for automobiles; Brakes for land vehicles.
3.
COLOR CORRECTION METHOD FOR LIGHTING SYSTEM AND LIGHTING SYSTEM
Disclosed are a color correction method for a lighting system and a lighting system, the lighting system includes a first laser set (10), a second laser set (20), a driving assembly (30), a wavelength conversion device (40), and a light-combining assembly (50), where the first laser set (10) is used for emitting first primary light; the second laser set (20) is used for emitting second primary light; the driving assembly (30) is used for driving the first laser set (10) to emit the first primary light in a first timing sequence and a second timing sequence, and driving the second laser set (20) to emit the second primary light in the first timing sequence and the second timing sequence; the wavelength conversion device (40) is used for converting the first primary light into converted light in the second timing sequence; and the light-combining assembly (50) is used for combining the first primary light and the second primary light in the first timing sequence, and combining the second primary light and the converted light in the second timing sequence. By means of the above method, the first primary light and the second primary light are combined, such that correction of the first primary light is realized to enable the first primary light to meet a preset color standard.
A projection display system includes a light source assembly, a wavelength adjusting assembly, and a modulation assembly. The light source assembly is configured to emit projected light. The wavelength adjusting assembly is disposed on an optical path of the projected light for adjusting spectrum of the projected light, and a ratio of luminous efficacy of adjusted projected light to luminous efficacy of monochromatic light corresponding to a dominant wavelength of the projected light is greater than a preset ratio, and color gamut of the adjusted projected light satisfies a preset color gamut coverage. The modulation assembly is disposed on a light exiting path of the wavelength adjusting assembly and configured to modulate light emitted by the wavelength adjusting assembly and output corresponding image light to form projection image.
H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
G03B 33/12 - Enregistrement ou projection simultanés faisant usage de systèmes à division des rayons ou à combinaison des rayons, p.ex. de miroirs dichroïques
The present application relates to the technical field of projection, and provides a projection calibration method and apparatus, an electronic device and a storage medium. The method comprises: establishing a first screen coordinate system and a second screen coordinate system; obtaining an included angle between the transverse axis of the first screen coordinate system and the transverse axis of the second screen coordinate system as a transverse axis included angle; obtaining actual coordinate information and/or actual angle information of a projection device in the first screen coordinate system on the basis of the transverse axis included angle; obtaining standard coordinate information and/or standard angle information of the projection device in the first screen coordinate system; determining a projection adjustment parameter according to actual position information and standard position information; and adjusting at least one of the projection position and the projection direction of the projection device according to the projection adjustment parameter. Therefore, a picture projected by the projection device can be completely displayed on a screen without distortion, the time consumption of user adjustment is reduced, and the user experience is improved.
A focusing method for a projection device (120) and a projection device (120). The focusing method comprises: projecting a first illumination light beam and a second illumination light beam to a lens (123), said two beams being emitted from the same position of a spatial light modulator (222) and having different incident angles, the first illumination light beam being projected onto a projection surface (110) after passing through the lens (123) so as to form a first light spot (226), and the second illumination light beam being projected onto the projection surface (110) after passing through the lens (123) so as to form a second light spot (227); on the basis of a relative position relationship between the first light spot (226) and the second light spot (227) on the projection surface (110), calculating the amount of focus of the lens (123); and focusing the lens (123) on the basis of the amount of focus. In this way, the focusing efficiency of the projection device (120) can be improved.
Embodiments of the present application disclose a heat load balancing method and apparatus for local dimming, and a projection device. The method comprises: obtaining a first display image displayed by a first spatial light modulator on the basis of a preset image in the local dimming of the projection device; obtaining, according to the first display image, a first heat load of the first spatial light modulator; if the first heat load is higher than the first heat resistance of the first spatial light modulator, adjusting the output power of the first spatial light modulator; obtaining, according to the adjusted output power of the first spatial light modulator, a first target image to be displayed on the first spatial light modulator after the output power is adjusted; and obtaining, according to the preset image and the first target image, a second target image to be displayed on a second spatial light modulator. The method provided by the present application can effectively balance the heat load on the spatial light modulator during the local dimming of the projection device.
Provided in the present application is a projection apparatus modulation method. A projection apparatus comprises a light source, a first modulation module and a second modulation module, wherein the first modulation module comprises a plurality of first optical switches. The method comprises: controlling a light source to emit illumination light; controlling a plurality of first optical switches to modulate the illumination light to form a continuous light field, and displaying a plurality of different halftone patterns in a switching manner within one image frame period of a second modulation module, wherein the plurality of different halftone patterns all represent the same grayscale; and controlling the second modulation module to modulate the continuous light field to generate an image light field. By means of the projection apparatus modulation method provided in the embodiments of the present application, the requirement of a first modulation module for temperature control is reduced, and the service life of the first modulation module is prolonged. Further provided in the present application are a projection apparatus, a controller and a computer-readable storage medium.
A method for manufacturing a projection screen and a projection screen are provided. The method includes: preparing a substrate; under a first preparation condition, forming a reflective layer by vacuum plating above the substrate; and under a second preparation condition, forming a diffusion layer by the vacuum plating on the reflective layer. The second preparation condition is different from the first preparation condition, and a sputtering power in the second preparation condition is higher than a sputtering power in the first preparation condition.
The present application discloses a projection image superposition method and apparatus, an electronic device and a storage medium, and relates to the technical field of projection. The method comprises: using one projection device of at least two projection devices as a reference projection device, and a projection device other than the reference projection device as a superposition projection device; using a source image of the reference projection device as a reference source image, acquiring coordinates of the reference source image as first coordinates; calculating coordinates of a projection source image as second coordinates according to the first coordinates and a first conversion relationship, the first conversion relationship being a conversion relationship between the reference source image and the projection source image, and the projection source image being a source image of a superposition projection device; and controlling the superposition projection device to adjust the projection source image according to the second coordinates so that a projection picture projected by the superposition projection device on the basis of the adjusted projection source image is superposed with a reference picture projected by the reference projection device on the basis of the reference source image, thereby avoiding distortion of a displayed picture.
A light source system, comprising: a wavelength conversion layer (102, 202) used for receiving exciting light (L3) and generating excited light (L2); a transparent thermal conduction substrate (104, 204) used for supporting the wavelength conversion layer (102, 202), and an excitation light source which emits the exciting light (L3) from a side of the wavelength conversion layer (102, 202) to the wavelength conversion layer (102, 202); and a red light source which emits red light (L1) from a side of the transparent thermal conduction substrate (104, 204) to the wavelength conversion layer (102, 202). The light source system can effectively solve the problem of insufficient red light in fluorescent powder excitation technology.
F21V 9/45 - CARACTÉRISTIQUES FONCTIONNELLES OU DÉTAILS FONCTIONNELS DES DISPOSITIFS OU SYSTÈMES D'ÉCLAIRAGE; COMBINAISONS STRUCTURALES DE DISPOSITIFS D'ÉCLAIRAGE AVEC D'AUTRES OBJETS, NON PRÉVUES AILLEURS Éléments modifiant les caractéristiques spectrales, la polarisation ou l’intensité de la lumière émise, p.ex. filtres avec des dispositions pour commander les propriétés spectrales, p.ex. la couleur, ou l’intensité en ajustant des éléments photoluminescents
F21V 29/70 - Dispositions de refroidissement caractérisées par des éléments passifs de dissipation de chaleur, p.ex. puits thermiques
12.
AUTOMATIC CALIBRATION METHOD, AND DEVICE, SYSTEM AND COMPUTER-READABLE STORAGE MEDIUM
Disclosed in the present application are an automatic calibration method, and a device, a system and a computer-readable storage medium, wherein the method is applied to a calibration control device. The method comprises: sending a first control instruction to a projection device, such that the projection device projects a plurality of projection pictures; sending a second control instruction to a photographic device, such that the photographic device photographs the projection pictures, so as to obtain a plurality of photographed projection images; and processing the plurality of photographed projection images, so as to obtain calibration parameters of the photographic device, wherein the calibration parameters comprise an internal parameter and a distortion parameter of the photographic device. In this way, the present application makes it possible to automatically calibrate a photographic device, thereby improving the efficiency of calibration.
A projection apparatus and an illumination light detection, auxiliary focusing and ambient light detection method, relating to the technical field of projection devices. The multiplexing lens projection apparatus comprises a lens module (110), a silicon-based liquid crystal element (120), a polarization light-splitting element (130), and an image sensor (140). The silicon-based liquid crystal element (120) is disposed behind the lens module (110), the polarization light-splitting element (130) is located between the lens module (110) and the silicon-based liquid crystal element (120), and the silicon-based liquid crystal element (120) is located at a first rear focus position (112) of the lens module (110). The image sensor (140) is located at a second rear focus position (114) of the lens module (110) under the action of the polarization light-splitting element (130), and is used for assisting in adjusting the distribution of illumination light incident on the silicon-based liquid crystal element (120). The present application facilitates improving the projection image performance of a projection system, and can also be applied to illumination light detection, auxiliary focusing and ambient light detection, thereby improving good use experience of a user.
A method, apparatus and system for calibrating two spatial light modulation devices, and an electronic device. The method comprises: acquiring a pixel distribution of a second spatial light modulator (S210); turning on pixels in a first spatial light modulator according to a predetermined rule, such that the second spatial light modulator outputs first image light according to output light of the turned-on pixels in the first spatial light modulator (S220); acquiring a first image to be processed that includes a first imaged image, wherein the first imaged image is obtained by means of imaging by the first image light (S230); according to a pre-processed first image to be processed, determining position information of the first imaged image (S240); and according to the pixel distribution of the second spatial light modulator and the position information of the first imaged image, determining and storing a correspondence between each pixel in the first spatial light modulator and each pixel in the second spatial light modulator (S250). Therefore, the calibration efficiency of two spatial light modulation devices can be improved, thereby ensuring the accuracy of a calibration result.
The present application relates to the technical field of display, and discloses an image display method and apparatus, an electronic device, and a storage medium. The image display method comprises: obtaining a trained lens model, and loading a phase of a target image onto the trained lens model, wherein the trained lens model is a linearized model; when a first light wave is inputted into the trained lens model, obtaining a second light wave outputted after the trained lens model performs phase modulation, wherein the second light wave carries phase information of the target image; and inputting the second light wave into an intensity spatial light modulator to obtain a second light wave outputted after the intensity spatial light modulator performs intensity modulation, such that the second light wave after the intensity modulation carries the phase information and intensity information of the target image, and the second light wave after the intensity modulation displays the target image on a display plane.
H04N 5/74 - Dispositifs de projection pour reproduction d'image, p.ex. eidophor
G02F 1/01 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
16.
POLARIZATION SPLITTING DEVICE, POLARIZATION SPLITTING STRUCTURE AND PROJECTION DEVICE
Provided is a polarization splitting device. The polarization splitting device includes a first optical element. The first optical element comprises a light incident surface, a polarization splitting interface and a reflective interface, and the polarization splitting interface and the reflective interface are correspondingly arranged. Incident light enters the first optical element through the light incident surface, and is split into first light and second light through the polarization splitting interface; the first light is incident on the reflective optical element after being reflected by the reflective interface: and the second light exits from the first optical element after being transmitted through the polarization splitting interface.
G02B 27/14 - Systèmes divisant ou combinant des faisceaux fonctionnant uniquement par réflexion
G02B 27/28 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour polariser
G03B 35/26 - Photographie stéréoscopique par examen simultané employant la lumière polarisée ou colorée pour séparer les images des différents points de vue
A light source system, comprising a light source, a light splitting and combining assembly, a scattering assembly, and a light homogenizing element. The light source comprises a plurality of laser diodes or laser diode arrays for generating laser, the laser comprising at least a first wavelength light and a second wavelength light, and the first wavelength light and the second wavelength light having different colors or different wavelengths. The light splitting and combining assembly is configured to combine the laser to form a combined light beam. The scattering assembly is configured to scatter and homogenize the combined light beam. The scattering assembly comprises a first scattering element and a second scattering element, the first scattering element and the second scattering element being independently arranged. The light homogenizing element is located between the scattering assembly and the light splitting and combining assembly or behind the scattering assembly or between the first scattering element and the second scattering element, and is configured to homogenize the light beam incident to the light homogenizing element. According to the present application, multi-color laser is scattered by the two independently arranged scattering elements, so that the scattering effect is achieved, the volume of the light source system is reduced, and the optical loss is reduced.
The present invention provides a laser light source system and a laser projection apparatus, comprising a first excitation light source, a second light source, a first light homogenizing element, a second light homogenizing element, a wavelength conversion device, and a light splitting and combining device. The light splitting and combining device reflects first blue light to a fluorescent layer which performs wavelength conversion to obtain yellow excited light; the light splitting and combining device transmits the yellow excited light, reflects second blue light, combines the yellow excited light and the second blue light, and outputs combined light. In the present invention, the first blue light emitted by the first excitation light source passes through the wavelength conversion device to generate the yellow excited light, and the yellow excited light and the second blue light emitted by the second light source are combined to form white light to be outputted; the apparatus has the advantages of being simple in overall structure, lower in cost, high in light emitting efficiency and the like.
Provided is an array light source. The array light source includes light-emitting modules, a wavelength conversion apparatus configured to convert excitation light into excited light, a control apparatus configured to transmit a light modulation signal, and a light modulation apparatus configured to modulate the excited light based on the light modulation signal, emit the modulated light, and form a modulated image. Each light-emitting module is configured to emit the excitation light. The light-emitting modules include edge light emitting modules distributed along an edge of the array light source and center light-emitting modules surrounded by the edge light-emitting modules. A maximum luminous intensity of the edge light-emitting modules is greater than that of the center light-emitting modules.
A color wheel phase detection method and system, and a projection device. The phase detection system comprises a color wheel (1), a color wheel motor (2) that drives the color wheel (1) to rotate, and a control circuit (3); the color wheel motor (2) is a three-phase motor, and the control circuit (3) comprises a three-phase driving circuit (31) for driving the color wheel motor (2) to operate. The phase detection system further comprises a phase detection device (4) for detecting the three-phase driving circuit (31); when detecting a preset phase, the phase detection device (4) sends a pulse signal to the control circuit (3) to implement color wheel phase detection. Therefore, the effects of low costs, high accuracy, and high reliability are achieved.
A transparent projection screen and a manufacturing method. The transparent projection screen is for receiving projection light and transmitting ambient light and comprises a first substrate layer, a Fresnel structure layer, a surface diffusion layer, a nano metal plating layer, and a binding adhesive layer. The Fresnel structure layer is disposed on the first substrate layer and comprises a prism surface. The surface diffusion layer is disposed on a portion of the prism surface. The nano metal plating layer is disposed on the surface diffusion layer. The binding adhesive layer is disposed on the nano metal plating layer and fills and levels the prism surface. The projection light passes the first substrate layer and is incident on the prism surface and then reflected thereby. The ambient light passes the binding adhesive layer, the nano metal plating layer, the surface diffusion layer and the first substrate layer, and is emitted.
The projection screen includes a reflective layer and a light-absorbing layer, where the reflective layer is configured to receive and reflect projection light, and the light-absorbing layer is arranged on the reflective layer; the light-absorbing layer includes a plurality of irregularly arranged light-absorbing members; and the light-absorbing members are configured to absorb at least a part of the projection light, so as to make a brightness of a projected image uniform.
G03B 21/60 - Ecrans de projection caractérisés par la nature de la surface
G02B 13/16 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous à utiliser en combinaison avec des convertisseurs ou des amplificateurs d'image
G02B 13/10 - Objectifs anamorphotiques comprenant des prismes
G02B 17/04 - Systèmes catoptriques, p.ex. systèmes redressant et renversant une image utilisant uniquement des prismes
G02B 27/18 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour projection optique, p.ex. combinaison de miroir, de condensateur et d'objectif
G03B 3/02 - Dispositions pour la mise au point présentant un intérêt général pour les appareils photographiques, les appareils de projection ou les tireuses par déplacement de l'objectif le long de la plaque de base
Provided are a lens adjusting device and a projection apparatus. The device includes a first adjusting support including a lens support, a first guide post and a second guide post; and a second adjusting support including a moving support, a first limit slot, and a first boss. The first guide post is fixedly clamped in the first limit slot, the second guide post being connected to the first boss, and the lens support being supported by and slidably connected to the first guide post and second guide post, such that the lens support is slidable relative to the second adjusting support along the first direction. The lens support is configured to adjust a position of the second guide post relative to the first boss prior to the second guide post and the first boss being fastened to each other to parallel the second guide post and the first guide post.
A fly-eye lens group, a light source device, and a projection apparatus. The fly-eye lens group includes: a first fly-eye lens, a second fly-eye lens, and a third fly-eye lens. The first fly-eye lens is parallel to the second fly-eye lens, the first fly-eye lens is perpendicular to the third fly-eye lens, a double fly-eye structure is formed by the first fly-eye lens and the second fly-eye lens, and the third fly-eye lens and the first fly-eye lens also form a double fly-eye structure. The fly-eye lens group is used for homogenizing incident first excitation light, excited light, and second excitation light.
Provided is a light source device, including a first light source module configured to output a first light beam; a second light source module configured to output a second light beam, etendue of the first light beam being smaller than etendue of the second light beam; a polarization conversion system configured to receive the first light beam and the second light beam and perform polarization conversion on at least one of the first light beam the second light beam; and an etendue increasing module provided on a light path between the first light source module and the polarization conversion system and configured to increase the etendue of the first light beam. Etendue of the first light beam incident on the PCS increases and the optical power density of the first light beam incident on the PCS decreases, thereby preventing overheating from affecting reliability of the polarization conversion system.
A light source system and a display apparatus are provided. The light source system includes first and second light emitting assemblies, a wavelength conversion device, an optical assembly, and a light combining device. The first light emitting assembly generates at least one primary color light. The second light emitting assembly generates excitation light. The wavelength conversion device is at least partially disposed on the optical path of the excitation light, and used for receiving the excitation light and generating corresponding excited light. The optical assembly is disposed on the optical path of the excited light, and used for increasing the amount of optical expansion of the excited light. The light combining device is disposed on the common optical path of the primary color light and the excited light and located behind the optical assembly, and used for combining the primary color light and the excited light.
An optical engine unit and a projection system are provided. The optical engine unit includes a light splitting assembly, first and second spatial light modulators, and a light combining assembly. The light splitting assembly splits an illumination beam incident on the light splitting assembly into first and second light beams. The first and second spatial light modulators respectively modulate the first and second light beams to form first and second modulated light beams. The light combining apparatus includes a light combining surface. The light combining surface is a coated surface and configured to combine the first modulated light beam and the second modulated light beam into an emergent light beam and emit the emergent light beam. An incident angle of the first modulated light beam on the light combining surface and that of the second modulated light beam being smaller than a total reflection angle of the light combining surface.
A head-up display screen, a head-up display assembly, and a vehicle are provided. The head-up display screen is attached to an inner side of an attachment surface of a windshield and configured to reflect image light emitted towards the windshield. The head-up display screen includes a functional layer, a reflective layer, and a protective layer that are sequentially arranged in a direction from the windshield to a driving position. The functional layer includes prism microstructures protruding from the inner side of the attachment surface of the windshield. The reflective layer is at least attached to lower inclined surfaces of the prism microstructures and is configured to reflect the image light towards the driving position. The protective layer covers the reflective layer and the functional layer.
An optical film and an optical imaging system are provided. The optical film includes a first lens layer, a first deflection layer, a reflection layer, a second deflection layer, and a second lens layer. The second lens layer is attached to a windshield. The reflection layer is configured to reflect an image light beam to form a first reflected light beam and the first lens layer and the first deflection layer are configured to amplify and/or deflect the first reflected light beam, to guide the first reflected light beam to a field-of-view direction. The second lens layer and the second deflection layer are configured to amplify and/or deflect a second reflected light beam, to guide the second reflected light beam to a first direction. The second reflected light beam is formed by that the windshield reflects the image light beam. The field-of-view direction is different from the first direction.
A prism apparatus and a projection device are provided. The prism apparatus includes a prism body, a first combining assembly, and a second combining assembly. The prism body includes prisms connected in sequence in a light guiding direction, and a gap is formed at a position where at least two adjacent ones of the prisms are connected to each other. The first combining assembly is arranged parallel to the light guiding direction, located at seams of the prisms, and connected to the prisms. The second combining assembly is arranged parallel to the light guiding direction, and covers and is connected to the first combining assembly.
Provided is a light source system, including: an excitation light source emitting excitation light; a wavelength conversion device having conversion and reflective regions located in different planes and time-sequentially located in optical path of the excitation light, the conversion region configured for converting at least part of the excitation light into excited light, and the reflective region configured for reflecting the excitation light; collection lens assembly configured to guide light from the conversion region to propagate along first direction to obtain first light, and guide the excitation light from the reflective region to propagate along second direction to obtain second light; first guide device configured to guide the excited light in the first light to exit along first path; and second guide device configured to guide the second light to propagate along second path. The first guide device combines the excited light and the second light to obtain source light.
Provided is a projection screen, the taper angles of a plurality of triangular pyramid units arranged in an array are designed to gradually change according to a predetermined relationship, so that the image light emitted from the projector is reflected by a microstructure layer with a triangular pyramid unit and then converges to a range centered on the human eye, which reduces the difference in brightness at different viewing positions, so as to ensure that the projection screen has high brightness uniformity and high gain.
A projection screen includes an optical collimating layer and a surface diffusion layer which are arranged in sequence. A grating absorption layer for absorbing ambient light from various directions except a projection light direction is also provided between the optical collimating layer and the surface diffusion layer. The grating absorption layer includes a plurality of light-absorption ring-shaped units with different radii. The plurality of light-absorption ring-shaped units are arranged in a concentric ring. Each of the light-absorption ring-shaped units consists of a plurality of gratings arranged in the circumferential direction of the concentric ring. By taking a vertical symmetrical center line of the projection screen as a center, in a direction extending along the circumferential direction of the concentric ring to the left side and the right side of the projection screen, the distance between two adjacent gratings in the same light-absorption ring-shaped unit gradually increases.
The present application provides a projection screen and a projection system. The projection screen includes an optical structure layer and a reflective layer, where the optical structure layer includes a plurality of microstructure units; each of the plurality of microstructure units include a first sidewall and second sidewalls; the reflective layer covers at least part of the first sidewall to form a first working surface, and the reflective layer covers at least part of the second sidewalls to form second working surfaces, respectively; the first working surface deflects an input image beam, and at least part of the input image beam is transmitted to viewer's field and the second working surfaces; and the second working surfaces deflect an input image beam came from the first working surface, and the input image beam came from the first working surface is transmitted to the viewer's field. The present application improves the brightness evenness of the projection screen.
G03B 21/602 - Ecrans de projection caractérisés par la nature de la surface Écrans lenticulaires
G02B 5/09 - Miroirs à facettes multiples ou polygonales
G02B 27/18 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour projection optique, p.ex. combinaison de miroir, de condensateur et d'objectif
G02B 1/04 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES Éléments optiques caractérisés par la substance dont ils sont faits; Revêtements optiques pour éléments optiques faits de substances organiques, p.ex. plastiques
The present disclosure provides a display device and a control method thereof. The control method of the display device comprises: obtaining, based on the first light output ratio and the second light output ratio, a first luminous flux set composed of values of luminous fluxes output by a combination path at a current bit depth, and a second luminous flux set composed of values of luminous fluxes output by the combination path at a target bit depth respectively; obtaining, based on the first luminous flux set and the second luminous flux set, a value of a luminous flux to be expanded to achieve the target bit depth at the current bit depth; and adjusting a mapping relationship between the value of each luminous flux to be expanded and a value of a maximum luminous flux in the first luminous flux set corresponding to the current bit depth based on a display bit depth of the display device.
A projection screen with a design in which the apexes of multiple triangular pyramidal units of the projection screen in an array arrangement change gradually according to a predetermined relation, an image light shone from a projector is reflected by a microstructure layer having the triangular pyramidal units and then converged in a range centered around the human eyes, so as to reduce the degree of difference in brightness at different viewing positions, thus ensuring that the projection screen is provided with excellent uniformity and high gain.
A method and apparatus for identifying corner points of a pattern in an image, and a medium and an electronic device. The method for identifying corner points of a pattern in an image comprises: performing image recognition on an image containing a pattern to be subjected to recognition, and determining position information of boundary points corresponding to said pattern (S210); according to the position information of the boundary points, determining included angles formed by every three adjacent boundary points (S220); according to the included angles formed by every three adjacent boundary points, identifying, from included angle vertexes of the included angles, near-corner points to be processed (S230); and according to the number of adjacent near-corner points to be processed, identifying a target near-corner point from the near-corner points to be processed, such that corner points of said pattern are determined according to the target near-corner point (S240). By means of the technical solution of the embodiments of the present application, the positions of the corner points of said pattern can be quickly identified, and the accuracy of corner point position identification is ensured.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; Loudspeakers; Downloadable computer application software for mobile phones, portable media players, handheld computers, namely, software for use in database management and use in electronic storage of data; Downloadable computer software for application and database integration; Downloadable computer game software; Fluorescent screens; LCD projectors; Multimedia projectors; Picture projectors; Projection screens; Projectors particularly projectors for the entertainment industry; Remote controls for televisions; Self-acting focussing projectors; Mini beam projectors; Digital projectors; Remote controls for projectors; Slide projectors; Television apparatus for projection purposes; Transparency projection apparatus; Video projectors; Video screens; 3D spectacles; Tripods for projectors; Stands adapted for projectors
A light source system and a projection system, the light source system comprising: a first light-emitting assembly (11) and a light-homogenizing system (12). The first light-emitting assembly (11) is used to generate a first light beam. The light-homogenizing system (12) is arranged on an exit light path of the first light-emitting assembly (11), and is used for homogenizing the first light beam, wherein the direction of a fast axis of the first light beam corresponds to a first direction of the light-homogenizing system (12), the direction of a slow axis of the first light beam corresponds to a second direction of the light-homogenizing system (12), the first direction is a direction in which the etendue of the light-homogenizing system (12) is greater than a preset etendue, and the second direction is a direction in which the etendue of the light-homogenizing system (12) is less than or equal to the preset etendue. By means of the foregoing manner, stripes generated by 3D devices may be eliminated.
Embodiments of the present application provide an image quality debugging method, an apparatus, a system and an electronic device. Said method comprises: acquiring a picture to be debugged of a device to be debugged and a reference picture of a reference device; determining, according to the difference between the pixel value of a pixel point in the picture to be debugged and the pixel value of the corresponding pixel point in the reference picture, a pixel point to be debugged in the picture to be debugged; adjusting parameter values of the pixel point to be debugged in positive and negative adjustment directions respectively, and determining, according to the difference between the adjusted pixel value of the pixel point in the picture to be debugged and the pixel value of the corresponding pixel point in the reference picture, a target adjustment direction of the pixel point to be debugged; and adjusting, according to the target adjustment direction, the parameter values of the pixel point to be debugged. According to the technical solution of the embodiments of the present application, the efficiency of debugging the image quality can be improved, and the effect of debugging the image quality is ensured.
Provided is a projection display device for displaying a time period of one frame of stereo image as a first modulation period. The projection display device includes: a light source for emitting illumination light; a spatial light modulator for modulating the illumination light according to a plurality of frames of two-dimensional images corresponding to a stereo image to be displayed, and sequentially emitting, within the first modulation period, image light corresponding to the plurality of frames of the two-dimensional images; an angle deflection apparatus arranged in an emergent optical path of the image light and used for deflecting the image light corresponding to the plurality of frames of two-dimensional images to different angles for emission; and a projection screen for displaying the image light deflected by the angle deflection apparatus.
A projection screen includes a substrate with a first substrate surface. The first substrate surface includes a first region and a second region adjacent to the first region. Multiple first wire grid bodies extending in a first direction are provided in the first region. Multiple second wire grid bodies extending in the first direction are provided in the second region. Each first wire grid body includes a first contact surface connected to the substrate and a first surface, and a first angle is formed therebetween. The first angles gradually decrease in a direction from the first region to the second region. Each second wire grid body includes a second contact surface connected to the substrate and a third surface, and a third angle is formed therebetween. The third angles gradually increase in a direction from the first region to the second region.
n optical engine system and a display apparatus. The optical engine system es: a first modulation device modulat first linearly polarized light a first optical path to obtain first modulated light; a second modulation device to modulate second linearly polarized light a second optical path to obtain second modulated light, the first linearly polarized light and the second linearly polarized light having same polarization state; and a light combining prism guide the first modulated light and the second modulated light to transmit along same optical path and obtain project light. paths of the first modulated light, the second modulated light, and the project light are located in same plane.
G02B 27/10 - Systèmes divisant ou combinant des faisceaux
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
44.
OPTICAL ENGINE LIGHT SOURCE FIXING STRUCTURE AND PROJECTOR
An optical engine light source fixing structure (100) comprises a bottom plate (110), a light source module (120), and an optical engine module (130). The light source module (120) and the optical engine module (130) are fixedly connected to the bottom plate (110); the light source module (120) comprises a light source housing (121); and a light exiting side of the light source housing (121) comprises a light exiting surface (123) and first positioning parts (125). The optical engine module (130) is located on the light exiting side of the light source module (120) in an optical axis direction and comprises an optical engine housing (131); a light incident side of the optical engine housing (131) is sealedly connected to the light exiting side of the light source housing (121); the light incident side of the optical engine housing (131) comprises a light incident surface (1310) and second positioning parts (1312); the light incident surface (1310) of the optical engine housing (131) corresponds to the light exiting surface (123) of the light source housing (121), and a deformation gap is formed therebetween; and the second positioning parts (1312) are matched with the first positioning parts (125) to limit the light incident side of the optical engine module (130) to move relative to the light source module (120) in a plane perpendicular to an optical axis. The optical engine light source fixing structure (100) effectively mitigates the problem of projected image defocusing caused by thermal expansion deformation while ensuring stable high-coupling efficiency of a light incident end of a square bar assembly (135). Further provided is a projector (200).
Disclosed are a light source system and a display device, including: a first light source configured to emit first light; a second light source configured to emit second light; a wavelength conversion device configured to perform a wavelength conversion on the first light to obtain third light; a first optical splitter having a first area and a second area; and a first light combining device. The first optical splitter moves in timing sequence to make the first area and the second area be sequentially located on a preset light path. A side surface of the first optical splitter is configured to homogenize the first light and the second light that are emitted to the first light combining device; and the first light combining device is configured to guide the first light, the second light, and the third light to exit along a same light path to form illumination light.
A light modulator (10) and a projection display system. The light modulator (10) comprises a surface-angle conversion assembly (11) and a modulation assembly (12). The surface-angle conversion assembly (11) is used for performing surface-angle conversion and converging on multiple light source beams to form multiple convergent beams corresponding to the light source beams, the multiple convergent beams being separated in an angle space. The modulation assembly (12) is used for modulating the multiple convergent beams to form image light; and the modulation assembly (12) comprises multiple pixel units (121); each pixel unit (121) comprises at least three sub-pixels; and the convergent beams respectively enter sub-pixels of the pixel units, and are in one-to-one correspondence with the sub-pixels. The surface-angle conversion assembly (11) comprises a microlens array consisting of multiple microlenses, each microlens being matched with the position of at least one pixel unit to converge the convergent beams to the pixel units (121). The method above can improve the light efficiency, and the present invention is simple in structure and small in volume.
A light modulator and a projection display system. The light modulator (10) comprises a plane-angle conversion assembly (11) and a modulation assembly (12), the plane-angle conversion assembly (11) performs plane-angle conversion on multiple light beams from a light source, to form multiple convergent light beams, and the multiple convergent light beams being separated in a plane space; the modulation assembly (12) modulates the multiple convergent light beams to form image light; the modulation assembly (12) comprises a plurality of pixel units (121), at least four sub-pixels (121a-121d) in the pixel units (121) comprise supplementary sub-pixels, the multiple light beams from a light source comprise supplementary light beams, the supplementary light beams correspond to the supplementary sub-pixels, and the supplementary light beams are used for supplementing the brightness of the light beams incident to the plane-angle conversion assembly (11) or enlarging the color gamut of the light beams incident to the plane-angle conversion assembly (11); the plane-angle conversion assembly (11) comprises a micro lens array composed of a plurality of micro lenses, and the micro lenses match the positions of the pixel units (121).
A stereoscopic display apparatus (10) and a stereoscopic projection display system. The stereoscopic display apparatus (10) comprises: a surface-angle conversion component (11) and a modulation component (12), wherein the surface-angle conversion component (11) is arranged on light paths of a plurality of light source beams, and is used for performing surface-angle conversion on the plurality of light source beams that are separated in an angle space, so as to form a plurality of converted beams corresponding to the light source beams, the plurality of converted beams being separated in a surface space; the modulation component (12) is arranged on an emergent light path of the surface-angle conversion component (11), and is used for modulating the plurality of converted beams, so as to form image light; and the modulation component (12) comprises a plurality of pixel units (20), each pixel unit (20) comprising a first sub-pixel unit (21) and a second sub-pixel unit (22), and the polarization directions of the first sub-pixel unit (21) and the second sub-pixel unit (22) being perpendicular to each other, such that the first sub-pixel unit (21) and the second sub-pixel unit (22) respectively display two pieces of image information having parallax therebetween. In this way, high-frame-rate stereoscopic display can be realized.
Embodiments of the present application relate to the technical field of projection, and provide a projection correction method, a projection correction apparatus, and an electronic device. The present invention can automatically correct the position of a projection device and mitigate the problem of matching difficulty of a projection image and a projection screen. The method comprises: obtaining screen coordinates of at least three non-collinear feature points in a projection image under a screen coordinate system, the at least three non-collinear feature points constituting one or more feature triangles; determining, according to screen coordinates of the feature points in the one or more feature triangles, the screen coordinate system, and azimuth angles, a projection device coordinate system having a minimum offset error, the projection coordinate system corresponding to an ideal feature triangle among the one or more feature triangles; calculating a translation correction component and a rotation correction component of a light-emitting point under the projection device coordinate system according to the projection device coordinate system and an ideal coordinate of the light-emitting point under the projection device coordinate system; and rotating and/or translating a projection device according to the translation correction component and the rotation correction component.
Disclosed are a projection fusion method, a projection fusion system and a computer-readable storage medium. The projection fusion method is applied to a projection fusion system, the projection fusion system comprises a plurality of projection assemblies, and the projection fusion method comprises: configuring information of a plurality of projection assemblies; controlling each projection assembly to project a test pattern; when each projection assembly projects the test pattern, controlling the plurality of projection assemblies to respectively collect test patterns, so as to obtain a plurality of sampling patterns, and acquiring, by using the test patterns and the sampling patterns, a relative position relationship between the projection assembly that projects the test pattern and the other projection assemblies; and splitting a target projection pattern by using the relative position relationship, and splicing and fusing the target projection pattern by means of the plurality of projection assemblies. In this way, automatic splicing and fusion by a plurality of projection assemblies can be realized, and projection fusion and 3D mapping calibration without human intervention are realized.
A display device includes a light source, a light modulator, and a control apparatus, the light modulator includes a digital micromirror array including micromirrors and is arranged on a light path of light emitted by the light source and configured to modulate the light emitted by the light source based on a target image and luminance of the light source to obtain a grayscale image. The control apparatus is configured to control a driving current of the light source to adjust the luminance of the light source in different periods within a frame image, and to cause a driving current overdrive pulse of the light source during at least one of the periods, so that a display bit depth of the grayscale image increases from n to n+i and the periods correspond to bitplanes of the grayscale image in one-to-one correspondence, i≥1 and i is an integer.
G09G 3/34 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante
Disclosed in the present invention is a projection device adjusting apparatus. The projection device adjusting apparatus comprises a chassis and at least three telescopic mechanisms. Each telescopic mechanism comprises: a driving assembly, configured to provide a driving force; a universal connecting piece, configured to be connected to a projection device; and a scissor frame, comprising a first hinge point, a second hinge point and a third hinge point, wherein the scissor frame is connected to the chassis by means of the first hinge point, connected to the driving assembly by means of the second hinge point, and connected to the universal connecting piece by means of the third hinge point, and the scissor frame is driven by the driving assembly to carry out height-adjusting motion. The at least three telescopic mechanisms are not collinear and are arranged on the chassis, and the telescopic mechanisms can independently carry out height-adjusting motion; the at least three telescopic mechanisms work in conjunction with each other to adjust the height of the projection device in a first direction, an angle around a second direction, and an angle around a third direction. The projection device adjusting apparatus of the present invention can adjust the position of a projection device in multiple directions and in multiple angles and also has the advantage of a large adjustment range.
G03B 21/14 - Projecteurs ou visionneuses du type par projection; Leurs accessoires - Détails
F16M 11/12 - Moyens pour la fixation des appareils; Moyens permettant le réglage des appareils par rapport au banc permettant la rotation dans plus d'une direction
A display device, including: a light source, used for emitting light source light; a control unit, used for controlling a drive current for the light source, the modulation period of each frame of image to be displayed comprising at least one pulse modulation period, and within the pulse modulation period, the drive current for the light source being an overshoot current so that the average luminous brightness of the light source in the modulation period reaches preset brightness; and a light modulation unit, used for modulating the light source light according to image data of the image to be displayed and the luminous brightness of the light source to obtain a modulated image.
G09G 3/22 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice utilisant des sources lumineuses commandées
G09G 3/34 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante
A display system includes a light source system including a light source array formed from multiple light source units, and used to emit a light beam, wherein the light source array can be divided into I×J sub-regions; a display unit disposed on an emergent light path of the light source system, and used to modulate a light spot on a surface thereof according to a light spot modulation signal, so as to generate image light; and a dynamic control module for obtaining the light spot modulation signal and a current modulation signal according to an image signal, dynamically updated chromaticity information and maximum brightness information of the light source units, and a correlation curve between a modulation current and brightness, wherein the current modulation signal is used to adjust the light source system.
G09G 3/36 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante utilisant des cristaux liquides
G09G 3/34 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques pour la présentation d'un ensemble de plusieurs caractères, p.ex. d'une page, en composant l'ensemble par combinaison d'éléments individuels disposés en matrice en commandant la lumière provenant d'une source indépendante
An LED light source structure (100) and a projector (200), relating to the technical field of lighting devices. The LED light source structure (100) comprises an LED light source (110), an anti-interference element (120) and a light homogenizing device (130). The LED light source (110) comprises an LED chip (1103), a circuit substrate (1101), and a gold wire (1105) electrically connected to the LED chip (1103) and the circuit substrate (1101). An incident end of the anti-interference element (120) is configured to correspond to a light-emitting surface of the LED chip (1103), and a spacing is provided therebetween. The incident end of the anti-interference element (120) is not coated with the gold wire (1105). The light homogenizing device (130) is connected to an exit end of the anti-interference element (120), and is used to homogenize light, said light being emitted by the LED light source (110) and then exiting by means of the anti-interference element (120) along an optical axis direction. In the LED light source structure (110), the anti-interference element (120) is provided between the incident end of the light homogenizing device (130) and the exit end of the LED light source (110) so as to separate the light homogenizing device (130) from the LED light source (110), and to avoid contact between the light homogenizing device (130) and the gold wire (1105) in the LED light source (110). Thus, the LED light source structure (100) may emit light having high uniformity, maintain etendue, and reduce the burden of subsequent optical systems.
A multiphase fluorescent ceramic and a preparation method therefor. Spinel is provided in a multiphase fluorescent ceramic comprising an alumina matrix and fluorescent particles, the spinel is distributed between alumina grain boundaries, and the exciting light irradiated into the multiphase fluorescent ceramic can be scattered, thereby facilitating further improvement in the luminous efficiency of the multiphase fluorescent ceramic.
A wire grid structure and a manufacturing method therefor, and a projection screen are provided. The manufacturing method includes: extruding a molten mixed material body in a melt extruder to a casting roll to form a casting piece; patterning the casting piece by means of an impression roll to form a precursor having a preset wire grid structure pattern, where the precursor is wound on the impression roll and has a first dimension in a height direction; stretching the precursor by a first group of stretching rolls and a second group of stretching rolls in two opposite directions along a direction perpendicular to the height direction to form the wire grid structure, a preset distance being configured between the first group of stretching rolls and the second group of stretching rolls. The wire grid structure has a second dimension in the height direction that is greater than the second dimension.
B29C 48/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet
B29C 59/04 - Façonnage de surface, p.ex. gaufrage; Appareils à cet effet par des moyens mécaniques, p.ex. par pressage en utilisant des rouleaux ou des courroies sans fin
A projection system, comprising a first light source which is an array light source, the first light source being divided into a plurality of illumination areas, and each illumination area may be independently controllable so as to generate a first illumination light field of which the brightness and darkness may be modulated; a second light source comprises an illumination unit and a light steering unit; the light steering unit redistributes illumination light emitted from the illumination unit to generate a second illumination light field of which the brightness and darkness may be modulated, wherein the first and second illumination light fields overlap to generate a combined light field. Also provided is a projection display method. The goal of simultaneously increasing image peak value brightness and lowering image dark field brightness is achieved, and a projection system that has a high contrast ratio is thus obtained.
A light source assembly (10). The light source assembly (10) comprises a light source array (100) and a shaping controller (200), wherein the light source array (100) comprises a plurality of light sources (110), the light sources (110) being used for emitting a laser; the shaping controller (200) is arranged on a light path of the laser, and comprises a plurality of shaping control units (210) for shaping the laser emitted by the light source array (100); and the shape of the shaping control units (210) is consistent with the shape of the light source array (100), such that a laser emitted by the light sources (110) at the same position forms a plurality of uniformly distributed first light spots (310) on a first preset plane (300) after the laser is shaped by the shaping control units (210), and the plurality of first light spots (310) form a first illumination region (320) having a uniform brightness. The provided light source assembly (10) can provide an illumination region having a uniform brightness.
An optical engine system (30), comprising a light source, a polarizing light-splitting device (200) and a light combining element (300), wherein the light source comprises a red light-emitting element (110), a green light-emitting element (120) and a blue light-emitting element (130), the red light-emitting element (110) being excited to generate red light, the green light-emitting element (120) being excited to generate green light, and the blue light-emitting element (130) being excited to generate blue light; the polarizing light-splitting device (200) is used for receiving the blue light emitted by the blue light-emitting element (130), and splitting the blue light into first polarized light and second polarized light; and the second polarized light is guided to the red light-emitting element (110) or the green light-emitting element (120), such that same is excited to generate some red light or some green light; and the light combining element (300) is used for combining the red light, the green light and the first polarized light and then emitting same. Blue light is split into different polarization states, such that blue light in some polarization states forms some light of other colors, thereby improving the utilization rate of the blue light, and reducing the optical energy loss. In addition, further provided is a projection device.
A light-shielding frame and an LED display device are provided and respectively has excellent light-shielding performance and optical display performance. The light-shielding frame includes a retaining wall and hollow grids; the retaining wall includes first and second retaining walls connected in a stacked manner along a light-emitting direction of the grids, and each grid includes first and second grid portions. The thickness of the first retaining wall decreases from one end thereof close to the second retaining wall to the other end thereof distant from the second retaining wall to form a first draft angle; the thickness of the second retaining wall decreases from one end thereof close to the first retaining wall to the other end thereof distant from the first retaining wall to form a second draft angle; the first retaining wall has the same thickness as the second retaining wall in the connection position thereof.
H01L 33/58 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de mise en forme du champ optique
H01L 25/075 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
A method for authorized use of a projector, comprising the following steps: a projector encodes a license into a QR code and displays same by means of projection; a mobile terminal identifies the QR code to obtain the license and transmits the license and a local terminal identifier of the mobile terminal to a projector authorization server; the projector authorization service verifies the local terminal identifier and the license and generates verification information if the verification is successful, and transmits the verification information to the mobile terminal; the mobile terminal receives and displays the verification information; the projector receives the input verification information, locally verifies the verification information, and if the local verification is successful, obtains use authorization corresponding to authorization information.
G06K 7/14 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire utilisant la lumière sans sélection des longueurs d'onde, p.ex. lecture de la lumière blanche réfléchie
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p.ex. forme, nature, code
63.
ACTUATOR, ACTUATOR CONTROL METHOD, PROJECTION DEVICE, AND PROJECTION DEVICE CONTROL METHOD
An actuator, an actuator control method, a projection device, and a projection device control method, which relate to the technical field of intelligent devices, and can reduce the power consumption of the actuator and increase the Ampere force of the actuator. The actuator (10) comprises an E-type magnetic core (11), a coil (12), a first permanent magnet (13), and a second permanent magnet (14); the E-type magnetic core (11) comprises a first branch arm (111) and a second branch arm (112) which are parallel, and a third branch arm (113) located between the first branch arm (111) and the second branch arm (112); the coil (12) surrounds the third branch arm (113) in a closed shape by taking the third branch arm (113) as a winding center; the first permanent magnet (13) is fixed on the side of the first branch arm (111) close to the coil (12), the second permanent magnet (14) is fixed on the side of the second branch arm (112) close to the coil (12), and the first permanent magnet (13) and the second permanent magnet (14) are not in contact with the coil (12).
H02K 33/18 - Moteurs avec un aimant, un induit ou un système de bobines à mouvement alternatif, oscillant ou vibrant avec des systèmes de bobines se déplaçant, du fait de mises sous tension intermittentes ou inversées, par interaction avec un système de champ magnétique fixe, p.ex. des aimants permanents
A projection display system, a light-emitting assembly (10) in the projection display system being used for producing laser light; a light guide assembly (20) is used for controlling the transmission direction of the laser light and the light reflected on the light guide assembly (20); a wavelength conversion apparatus (30) comprises a first area and a second area, the first area comprising a plurality of modules (31) used for converting a first laser light into excited laser light and transmitting the excited laser light and a second laser light, and the second area being used for reflecting a third laser light; a display apparatus (40) is arranged on the emergent light path of the wavelength conversion apparatus (30), and is used for receiving the excited laser light and the second laser light; the display apparatus (40) comprises a plurality of pixel areas (41) corresponding on a one-to-one basis to the plurality of modules (31); first excited laser light is transmitted to the display apparatus (40), and recovered light is reflected by the light guide assembly (20) to be incident on the wavelength conversion apparatus (30) again. The present projection display system can reduce energy loss and increase the efficiency of energy utilisation.
Provided is a light source device, including: a laser generation unit configured to output laser light; a light modification element disposed in a light guide unit or between the light guide unit and a homogenizing unit and configured to cause an angular distribution of the laser light uniform and continuous; the light guide unit, configured to receive the laser light output by the laser generation unit and guide the laser light to the homogenizing unit; and the homogenizing unit, configured to receive the laser light from the light guide unit, and homogenize and output the laser light.
G02B 30/25 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p.ex. des effets stéréoscopiques en fournissant des première et seconde images de parallaxe à chacun des yeux gauche et droit d’un observateur du type stéréoscopique utilisant des techniques de polarisation
66.
Preparation method for ceramic composite material, ceramic composite material, and wavelength converter
Provided is a ceramic composite material and a wavelength converter. The ceramic composite material includes: an alumina matrix, a fluorescent powder uniformly distributed in the alumina matrix, and scattering centers uniformly distributed in the alumina matrix, wherein the alumina matrix is an alumina ceramics, the scattering centers are alumina particles, the alumina particles each have a particle diameter of 1 μm to 10 μm, and the fluorescent powder has a particle diameter of 13 μm to 20 μm.
Provided are a wavelength conversion apparatus, a light source system including the same, and a display device including the light source system. The wavelength conversion apparatus includes an angle deflection region and a wavelength conversion region for converting incident second light into excited light and then emitting same. The angle deflection region includes deflection units, each of which includes a light emergent face for emitting first light. A first included angle is formed between the light emergent face and a reference plane. First included angles between light emergent faces of at least two deflection units and the reference plane are not equal. The deflection units are located on a light path of the first light in a time sequence, so as to change an emergent angle of the first light in the time sequence, such that the first light is successively scanned at a preset position to form virtual pixels.
A rotating polygon mirror (220), a linear array light source scanning display system (200), and a projector. The rotating polygon mirror (220) is applied in the linear array light source scanning display system (200) to receive and reflect a collimated light beam (211) emitted by a linear array light source (210) so as to form a display image; the rotating polygon mirror (220) comprises n reflective surfaces (230), wherein n≥2, and each reflective surface (230) is parallel to an axis of rotation (240); the rotating polygon mirror (220) is rotatable about the axis of rotation (240), so that the n reflective surfaces (230) move sequentially, through the rotation of the rotating polygon mirror (220), to a light path of the collimated light beam (211) in order to successively reflect the collimated light beam (211); the collimated light beam (211), after being reflected by the n reflective surfaces (230), sequentially forms n scanning line arrays (280) on a display surface (251); and on the display surface (251), at least two scanning line arrays (281, 282) of the n scanning line arrays (280) are displaced in a direction parallel to the axis of rotation (240). The rotating polygon mirror (220) may increase the display resolution of a projected picture with a limited number of laser light sources, can improve the display effect, and is easy to process and manufacture.
An optical film (10) and an optical imaging system (100). The optical film (10) is attached to a windshield (20), and at least comprises a phase cancellation layer (13), a reflection layer (12) and a microstructure layer (11) that are stacked in sequence; the reflection layer (12) is used to reflect an image beam to form a first reflected beam; the phase cancellation layer (13) is used to amplify and/or deflect a second reflected beam, so as to guide the second reflected beam to a second exit direction; a normal vector of the microstructure layer (11) faces a first exit direction, and the microstructure layer (11) is used to guide the first reflected beam to the first exit direction; and the phase cancellation layer (13) is used to cancel the phase difference generated by the beam passing through the microstructure layer (11). The second reflected beam is formed by reflecting the image beam by the windshield (20), and the first exit direction is different from the second exit direction. In this way, a virtual image can be directly formed when the optical film (10) is attached to the surface of the windshield (20), and ghost images can further be eliminated.
A projection screen and a projection system are provided. The projection screen includes a microlens array layer, a filter layer, and an optical structure layer arranged sequentially from an incident side of a projection light. The microlens array layer includes microlens units. The filter layer has a predetermined transmittance and is provided with a light-transmissive hole. The optical structure layer includes an optical microstructure unit capable of reflecting the incident light. The light-transmissive hole in the filter layer is arranged on the basis of an optical axis of the microlens unit in the microlens array layer so that the light-transmissive hole is exactly located on a focal plane of the microlens unit, and the projection light is reflected by the microlens unit, and then exactly passes through the light-transmissive hole. The projection screen has a high screen gain.
A wavelength conversion device and a light-emitting device and a projection device using the wavelength conversion device are provided. The wavelength conversion device includes a substrate capable of rotating around a rotating shaft, the substrate includes a first surface and a second surface opposite to each other, and an annular side surface, which is formed between the first surface and the second surface and is not perpendicular to the first surface. The first surface is provided with a wavelength conversion material layer, and the annular side surface includes a first area and a second area. The first area and the second area are used to reflect incident light beams.
Disclosed are a height-adjustment device for a projection screen, a projection screen, and a laser television. The height-adjustment device comprises screw rod-sliding block mechanisms, crossbeam support mechanisms, and a crossbeam. Each screw rod-sliding block mechanism comprises a screw rod and a sliding block. One end of each crossbeam support mechanism is hinged or fixedly connected to the corresponding sliding block and forms a first hinge point or a first connection point. The other end of the crossbeam support mechanism is hinged to the crossbeam and forms a second hinge point. The sliding block can move along the length direction of the screw rod, so as to adjust the linear distance between the first hinge point or the first connection point and the crossbeam. There are two screw rod-sliding block mechanisms and two crossbeam support mechanisms, either of which are distributed symmetrically about the perpendicular bisector of the crossbeam. According to the height-adjustment device of the present invention, the height can be adjusted by means of individual or simultaneous action of screw rod-sliding block mechanisms and crossbeam support mechanisms, and the adjustment range is large, so that the requirements of use at different heights for a screen can be satisfied. Different tension requirements can also be satisfied by adjusting the support angle of the height-adjustment device.
G03B 21/58 - Ecrans de projection de surface variable
H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
H04N 5/64 - TRANSMISSION D'IMAGES, p.ex. TÉLÉVISION - Détails des systèmes de télévision - Détails de structure des récepteurs, p.ex. ébénisterie ou housses
A projection display system, including light emitting device, light splitting device, first, second and third light modulators. The light emitting device emits first light and second light in time sequence. The light splitting device splits the first and second light into first and second wavelength range light along first and second optical paths, respectively, and guides part of the second light along the first optical path. The first and second light modulators modulate the light along the first and second optical paths, respectively; the light modulated by the first and second light modulators is combined to obtain third light along third optical path. The third light modulator is in optical path between the light emitting device and the light splitting device and modulates the first and second light from the light emitting device; or the third light modulator is in the third optical path and modulates the third light.
Provided is an optical coating for a projection screen, containing the following components in parts by weight: 2-15 parts of light-absorbing material, 5-20 parts of aluminum silver powder, 20-60 parts of acrylate oligomer, 10-45 parts of diluent, 0.5-15 parts of photoinitiator, and 0.1-6 parts of auxiliary agent; the light-absorbing material is one or more of carbon black, lamp black, iron black, and aniline black, and has an average particle size of 20-2000 nm; the aluminum silver powder is flake-shaped and has an average particle size of 3-10 μm.
A projection screen (100), comprising a screen (110), connecting columns (120), a screen vibration assembly (130), a measurement assembly and a driving motor (150). The connecting columns (120) are fixedly connected to both sides of the screen (110), and the screen vibration assembly (130) are connected to the connecting columns (120). The measurement assembly is connected to the screen (110), the connecting columns (120) or the screen vibration assembly (130) and used for measuring the vibration amplitude of a component connected thereto. The driving motor (150) is connected to the screen vibration assembly (130), and the measurement assembly is electrically connected to the driving motor (150). When the vibration amplitude measured by the measurement assembly is less than or equal to a preset amplitude, the driving motor (150) drives the screen vibration assembly (130) to drive the screen (110) to vibrate in a preset direction. The projection screen (100) uses the screen vibration assembly (130) to drive a screen (110) to vibrate, and by means of a feedback loop of the measurement assembly, the driving motor (150) drives the screen vibration assembly (130) to drive the screen (110) to be always in a vibration state, avoiding a sudden static state of the screen (110) in a vibration process, and ensuring that the screen (110) achieves a continuous speckle elimination effect.
A light source system, comprising: a wavelength conversion layer (102, 202) used for receiving exciting light (L3) and generating excited light (L2); a transparent thermal conduction substrate (104, 204) used for supporting the wavelength conversion layer (102, 202), and an excitation light source which emits the exciting light (L3) from a side of the wavelength conversion layer (102, 202) to the wavelength conversion layer (102, 202); and a red light source which emits red light (L1) from a side of the transparent thermal conduction substrate (104, 204) to the wavelength conversion layer (102, 202). The light source system can effectively solve the problem of insufficient red light in fluorescent powder excitation technology.
F21V 9/45 - CARACTÉRISTIQUES FONCTIONNELLES OU DÉTAILS FONCTIONNELS DES DISPOSITIFS OU SYSTÈMES D'ÉCLAIRAGE; COMBINAISONS STRUCTURALES DE DISPOSITIFS D'ÉCLAIRAGE AVEC D'AUTRES OBJETS, NON PRÉVUES AILLEURS Éléments modifiant les caractéristiques spectrales, la polarisation ou l’intensité de la lumière émise, p.ex. filtres avec des dispositions pour commander les propriétés spectrales, p.ex. la couleur, ou l’intensité en ajustant des éléments photoluminescents
F21V 29/70 - Dispositions de refroidissement caractérisées par des éléments passifs de dissipation de chaleur, p.ex. puits thermiques
A light source device (1) and a laser projection system (60). The light source device (1) comprises: a first light source (10) for emitting excitation light; a first polarization controller (11) for controlling a polarization state of the excitation light to emit excitation light of a first polarization state or a second polarization state; a first homogenizing apparatus (12) for performing homogenizing processing on the excitation light of the first polarization state or the second polarization state; a first light splitting/combining member (40) for reflecting the excitation light of the first polarization state or transmitting the excitation light of the second polarization state; a first wavelength conversion device (21) for receiving the excitation light of the first polarization state and emitting first light; and a second wavelength conversion device (31) for receiving the excitation light of the second polarization state and emitting second light, wherein the first light splitting/combining member (40) reflects the second light or transmits the first light. The first wavelength conversion device (21) and the second wavelength conversion device (31) are excited by means of the single first polarization controller (11), so that the working efficiency can be improved and the costs can be lowered, and moreover, the brightness of the first light or the second light is effectively improved.
An autofocus method and an autofocus apparatus. The autofocus apparatus comprises a lens (11), a lens barrel (12), a controller (13) and a drive device (14). A resistor bar (121) is provided on the lens barrel (12). The lens (11) is provided with a contact (111) in contact with the resistor bar (121). At least one end of the resistor bar (121) is connected to the controller (13). The contact (111) is connected to the controller (13). The controller (13) is used to detect a contact voltage at the contact (111), to obtain a current angle of the lens barrel (12) according to the contact voltage, and to obtain an angle difference by which the lens barrel (12) needs to rotate according to an imaging angle acquired in advance and the current angle. The drive device (14) is connected to the controller (13), and is used to drive the lens barrel (12) to rotate so as to reduce the angle difference. The contact voltage detected by the controller (13) changes with rotation of the lens barrel (12). The autofocus apparatus can realize automatic focusing, and reduce costs.
G02B 7/09 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles avec mécanisme de mise au point ou pour faire varier le grossissement adaptés pour la mise au point automatique ou pour faire varier le grossissement de façon automatique
G03B 13/36 - Systèmes de mise au point automatique
G02B 7/28 - Systèmes pour la génération automatique de signaux de mise au point
79.
REAL-TIME FOCUSING METHOD, APPARATUS AND SYSTEM, AND COMPUTER-READABLE STORAGE MEDIUM
Disclosed are a real-time focusing method, apparatus and system, and a computer-readable storage medium. The method comprises: acquiring video source data and a captured image; processing the video source data and the captured image, so as to obtain feature information of the video source data and feature information of the captured image; and on the basis of the feature information of the video source data and the feature information of the captured image, generating a control instruction, and sending the control instruction to an electric motor, such that the electric motor drives a projection lens to move, thereby realizing focusing. In this way, automatic real-time focusing can be realized by means of the present application.
Embodiments of the present application provide a curtain fixing structure, a mounting support, a curtain device and a projection display system, which relate to the technical field of display. The curtain fixing structure comprises a frame, a fixing member and an adjusting assembly. The frame comprises an adjusting portion, and a supporting side and a mounting side that are arranged opposite each other, the mounting side being provided with a clamping portion. The fixing member is used for being fixedly connected to an edge of a curtain and is detachably connected to the clamping portion. The adjusting assembly is arranged between the curtain and the frame, is elastically connected to the frame and has a fixed state and an abutting state; the adjusting assembly, when in the fixed state, is fixedly connected relative to the frame; and the adjusting assembly, when in the abutting state, abuts against the curtain connected to the fixing member so as to provide tension for the curtain to be unfolded on the supporting side of the frame. The curtain mounting support comprises a plurality of curtain fixing structures, and all the frames are sequentially connected end-to-end and a hollow framework structure is formed by being enclosed by same. The curtain device comprises the curtain and the curtain mounting support. The present application is convenient to mount, reducing the mounting difficulty and facilitating the improvement of the mounting efficiency.
Disclosed in embodiments of the present invention is a projection device, comprising a light source apparatus, a spatial light modulator, and a control apparatus. The light source apparatus comprises at least one laser unit; the control apparatus is used for obtaining brightness distribution information of the current image frame according to an image signal to be displayed, and controlling a drive current of the laser unit according to the brightness distribution information of the current image frame and service life data information of the laser unit, so that the drive current is greater than a rated drive current during at least a portion of the time period within the time of the current image frame; and the spatial light modulator is disposed on an optical path of light emitted by the light source apparatus and used for modulating the light emitted by the light source apparatus to obtain a modulated image. The projection device can fully utilize the relationship between the service life of the laser unit and the drive current, and can ensure that the light source apparatus achieves high-brightness display under the condition of meeting service life requirements.
A single-plate liquid crystal projection device, comprising a white light source module (10) for emitting a first light beam at least comprising red light, green light and blue light components; a first wavelength angle beam splitter (20), the first light beam being converted into color light beams by means of the first wavelength angle light splitter (20); a first micro lens array (30) for converging the color light beams so that the color light beams form separated red, green and blue color stripes or color spots on a reference plane; a liquid crystal display device (40) comprising a liquid crystal pixel array containing a plurality of liquid crystal pixels, wherein the liquid crystal pixel array is arranged on the reference plane, and the color stripes or color spots of different colors respectively fall on different liquid crystal pixels, and the liquid crystal display device (40) is used for modulating the incident light to form a color image and emit same; and a projection lens (50) for projecting the color image emitted by the liquid crystal display device (40) to a preset position, wherein when the cross-sectional area of the first light beam is equivalent to the effective pixel area of the liquid crystal display device (40), the first light beam is light with a small divergence angle.
Provided is a light source system, including: an excitation light source for emitting excitation light; a wavelength conversion device provided with a conversion layer which is used to perform wavelength conversion on at least a portion of the excitation light to obtain stimulated light, and to exit the stimulated light and the unconverted excitation light; and a dichroic assembly which is used to guide the stimulated light exited from the conversion layer to propagate along the second optical path, and finally to exit from the light source system along the exit optical path, and to guide at least a portion of the unconverted excitation light exited from the conversion layer to transmit on a path, which is not the exit optical path. Further provided is a projection device comprising the above light source system.
Provided is a color wheel. The color wheel includes a substrate, a conversion layer disposed on the substrate for wavelength conversion of incident light and obtaining irradiated laser, a first filter layer for filtering the irradiated laser to obtain a first light for modulating an image in a first color gamut range, and a second filter layer for filtering the irradiated laser to obtain a second light for modulating an image in a second color gamut range. Planes, in which the light incident surface of the conversion layer, the light incident surface of the first filter layer and the light incident surface of the second filter layer are located respectively, are parallel or coincide with each other.
A total reflection screen comprises a light diffusion layer, a total reflection layer and a light absorption layer arranged sequentially from an incidence side of the projected light. The light absorption layer can absorb an incident light. The light diffusion layer is used for increasing a divergence angle of emergent light. The total reflection layer comprises a plurality of microstructure units that is rotationally symmetrical and extends continuously in a plane of the total reflection screen. Each of the microstructure units comprises a first material layer disposed at the side of the light diffusion layer and a second material layer disposed at the side of the light absorption layer. The interface between the first material layer and the second material layer is comprised of two intersecting planes, which are disposed in such a way that the projected light is subjected to total reflection continuously at the two intersecting planes.
Disclosed are a method, device, and system for recognizing a projection position, and a storage medium. The method comprises: acquiring an image to be processed, said image comprising a screen area and a projection area; selecting a point from the projection area as the starting point of a ray; searching along a plurality of preset directions on the basis of the starting point of the ray to obtain a boundary point of the screen area and a boundary point of the projection area, a first preset angle being formed between two adjacent preset directions; screening the boundary points to obtain near corner points; and using the near corner points to obtain a corner point of the screen area and a corner point of the projection area, using the coordinate of the corner point of the screen area as the position where a screen is projected, and using the coordinate of the corner point of the projection area as the position of the projection area. By means of the approach, the present application can improve the recognition speed, the anti-interference performance is strong, and the recognition accuracy is high.
A display system includes: a light source system configured to emit light beams; a scanner configured to scan the light beams on the surface of a spatial light modulator in the form of a light spot, the light spot corresponding to multiple pixels of the spatial light modulator; a spatial light modulator configured to modulate, according to an image modulation signal from a processing and control system, the light spot projected onto the spatial light modulator by the scanner to output image light; a processing and control system configured to output a light source timing modulation signal to a light source modulation device according to an input image signal and output an image modulation signal to the spatial light modulator; and a light source modulation device configured to adjust the output brightness of the light source system according to the light source timing modulation signal.
222122212221333) to the light recycling assembly (220). The light valve (230) comprises an image displaying surface. The pre-configured light spot shape of the first polarized light matches the shape of the image displaying surface. The light recycling assembly (220) and the projection device (200) shape and recycle the illumination light, thereby achieving light circulation and effectively improving light utilization efficiency.
A light source system (100), comprising a first light source (1), a second light source (2), a first light guide element (3), and a first beam combining element (4). The first and second light sources (1, 2) respectively comprise a plurality of lasers; the first light source (1) and the second light source (2) are provided respectively in a first direction (X) and a second direction (Y) in a staggered manner, and the first direction (X) is perpendicular to the second direction (Y). The first light source (1) emits a first beam group (110), and the first beam group (110) comprises a plurality of first laser beams; the first light guide element (3) guides the first beam group to the first beam combining element (4); the second light source (2) emits a second beam group (210), and the second beam group (210) comprises a plurality of second laser beams; the first beam combining element (4) transmits the first beam group (110) and reflects the second beam group (210) to form first combined light. In the first combined light, a plurality of first and second beam groups (110, 210) are alternately intercalated in the first direction (X), the plurality of first and second laser beams are alternately intercalated in a third direction (Y'), and the first direction (X) is perpendicular to the third direction (Y').
The present application relates to the technical field of projection display, and in particular to a light source device and a projection system. The light source device comprises at least one light source module, an optical fiber interface structure, and an optical field shaping module; the light source module comprises at least one projection light source and a corresponding optical fiber; the optical fiber is coupled to the projection light source by means of a coupling lens, and light emitted by the projection light source is incident on the optical fiber by means of the coupling lens and exits from a light exit end of the optical fiber; optical fiber interfaces distributed in an array are formed on the optical fiber interface structure; according to predetermined requirements, a light exit end of the at least one light source module can be adapted and assembled to the optical fiber interfaces, so as to form array light having a specific light distribution on a light exit surface of the optical fiber interface structure; the light field shaping module is provided corresponding to the optical fiber interface structure to shape the array light exited from the light exit surface of the optical fiber interface structure to form projection light. The light source device of the present application improves the development efficiency of the light source.
A projection device position adjusting bracket (100). The projection device position adjusting bracket (100) comprises a fixing base (110), a first adjusting mechanism (130), and a second adjusting mechanism (140). The fixing base (110) is used for fixing a projection device (160), and a first transmission member (116) is fixedly connected to the fixing base (110). The first adjusting mechanism (130) is provided on a side of the fixing base (110) close to the first transmission member (116); the first adjusting mechanism (130) comprises a first adjusting base (131), a first driving assembly (133), and a second transmission member (137), and the first driving assembly (133) is transmittingly connected to the first transmission member (116) so as to drive the fixing base (110) to rotate around a first shaft (101). The second adjusting mechanism (140) is located on a side of the first adjusting mechanism (130) facing away from the fixing base (110); the second adjusting mechanism (140) comprises a second adjusting base (141) and a second driving assembly (143), and the second driving assembly (143) is transmittingly connected to the second transmission member (137); the second transmission member (137) drives the first adjusting base (131), and the first adjusting base (131) drives the fixing base (110) to do a lifting/lowering motion or a pitching motion.
F16M 11/04 - Moyens pour la fixation des appareils; Moyens permettant le réglage des appareils par rapport au banc
F16M 11/10 - Moyens pour la fixation des appareils; Moyens permettant le réglage des appareils par rapport au banc permettant la rotation autour d'un axe horizontal
A lens adjusting device and a projection apparatus. The lens adjusting device comprises a lens support (1), an adjusting support (2), a first direction adjusting assembly (3), a second direction adjusting assembly (4), a guide arm (5), an upper cover (6) and a shell body (7), wherein the first direction adjusting assembly (3) and the second direction adjusting assembly (4) are arranged on the upper cover (6), and the lens support (1), the adjusting support (2) and the guide arm (5) are accommodated in a space formed by the upper cover (6) and the shell body (7); and the first direction adjusting assembly (3) drives the lens support (1) to slide in a first direction, the second direction adjusting assembly (4) and the guide arm (5) drive the adjusting support (2) to rotate, the lens support (1) moves in a second direction, and the first direction is perpendicular to the second direction. By means of the lens adjusting device, the adjusting assemblies are used for making the lens move in one direction, the guide arm (5) drives the lens to rotate, and a component forms a movement in another direction, so as to adjust the position of a lens; and the two direction adjusting assemblies are relatively independent, and the whole adjusting device has a simple and compact structure and occupies a small space, thereby reducing the manufacturing cost and facilitating operation.
The embodiments of the present application provide a projection system and a projection device. The projection system comprises a light source (11), a spatial light modulator (12) and a displacement structure (13); the light source (11) is used for emitting display light; the spatial light modulator (12) is provided on a light path of the display light emitted from the light source (11), and the spatial light modulator (12) is used for modulating the display light emitted from the light source (11), so as to emit image light; the spatial light modulator (12) comprises a plurality of pixel units arranged in an array, each pixel unit comprising a plurality of sub-pixel units; and the displacement structure (13) is used for moving images displayed by the plurality of sub-pixel units of the spatial light modulator (12), so that in any image, each sub-pixel unit can display white light in space. The resolution of the spatial light modulator (12) can be improved without reducing the aperture ratio of the spatial light modulator (12), and the problem of color separation can be further avoided.
H04N 9/31 - Dispositifs de projection pour la présentation d'images en couleurs
H04N 5/74 - Dispositifs de projection pour reproduction d'image, p.ex. eidophor
G03B 21/00 - Projecteurs ou visionneuses du type par projection; Leurs accessoires
G02F 1/13 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des cristaux liquides, p.ex. cellules d'affichage individuelles à cristaux liquides
95.
FRESNEL COMBINED OPTICAL DEVICE AND THREE-DIMENSIONAL DISPLAY APPARATUS
A Fresnel combined optical device (1000), which is used for modulating quasi-parallel light beams (31), and which comprises a Fresnel optical element (100) and a light deflection element (200). The Fresnel optical element (100) comprises several Fresnel prism units. Each Fresnel prism unit comprises a prism surface (110) and a plane (120) that face away from each other. The prism surface (110) is used to receive a quasi-parallel light beam (31). The light deflection element (200) comprises a first surface (210) and a second surface (220). The plane (120) of each Fresnel prism unit is attached to the first surface (210). The surface shape of the prism surface (110) of the Fresnel prism unit where the plane (120) is located matches the surface shape of the second surface (220), so that each Fresnel prism unit and the matching light deflection element (200) thereof form an optical flat unit, and thus the Fresnel combined optical device (1000) is equivalent to an optical panel. The quasi-parallel beams (31) may be modulated by different positions of the Fresnel combined optical device (1000) to then control the shape of an image plane (32), thus achieving a naked eye three-dimensional display effect.
G02B 30/56 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p.ex. des effets stéréoscopiques l’image étant construite à partir d'éléments d'image répartis sur un volume 3D, p.ex. des voxels en projetant une image aérienne ou flottante
A light source apparatus (200), comprising a light source module (240) and a wavelength conversion apparatus (280), wherein the light source module (240) comprises several light-emitting units (242) arranged at intervals in a strip-shaped structure, and each light-emitting unit (242) may independently emit a light beam. The wavelength conversion apparatus (280) comprises wavelength conversion regions (281) and a non-wavelength conversion region (283). The wavelength conversion regions (281) are used to convert the light beams emitted by the light-emitting units (242) into excited light. The wavelength conversion regions (281) and the non-wavelength conversion region (283) enter emitting paths of the light beams of the light source module (240) in time sequence. The light source module (240) rotates and moves so as to make the light beams emitted by the light-emitting units (242) irradiate to different positions of the wavelength conversion regions (281) or the non-wavelength conversion region (283), and then by means of separately controlling the intensity of the emitted beams of each light-emitting unit (242), the local dimming effect of the light source apparatus (200) may be achieved, which effectively reduces the number of light-emitting units (242) compared to linearly arrayed lamp beads. Further provided is a projection device (1000).
An image display method includes according to image information of a current image frame to be displayed, adjusting the brightness of a first light source (11) having a first light field, and steering light of a second light source (12) to form a second light field, so as to enable the first light field provided by the second light source (11) and the second light field provided by the second light source (12) to work in concert to satisfy displaying of display partitions of the image frame to be displayed. The image display method implements high-dynamic range display of images, and facilitates improvement of dark field detail expression of images to be displayed. Also provided are an image display apparatus and a projection device.
A light source system and a projection apparatus are provided. The light source system includes a first light source, a second light source including a second blue laser light source, a wavelength conversion element configured to convert second blue laser light into excited light, and a controller. The first light source includes a first blue laser light source configured to emit first blue laser light, a red laser light source configured to emit red laser light, and a green laser light source configured to emit green laser light. The controller controls the first and second blue laser light sources, the red laser light source, and the green laser light source to combine the first blue laser light, the red laser light, and the green laser light to form light source light, or to combine the first blue laser light and the excited light to form the light source light.
A wavelength conversion device and a light source system, including: a substrate; a first light-emitting portion disposed on the substrate, wherein the first light-emitting portion includes a first light guide area and a counterweight area provided on the same layer as the first light guide area, the first light guide area being used for guiding first light, and the counterweight area being used for making the weight distribution of the wavelength conversion device substantially uniform; and a second light-emitting portion provided on the substrate on the same side as the first light-emitting portion, the second light-emitting portion including a conversion area, and the conversion area being used to convert at least a part of excitation light into excited light for emission when the excitation light is received.
A display method, comprising: determining the maximum light source brightness, an initial light source brightness within the current frame and a maximum initial grayscale signal within the current frame; determining a target light source brightness within the current frame according to the product of the maximum light source brightness and the maximum initial grayscale signal; selecting, on the basis of the initial light source brightness and the target light source brightness, part of a global brightness change rule to generate a light source brightness change rule within the current frame; determining a final grayscale signal of each pixel point within the current frame on the basis of the light source brightness change rule and an initial grayscale signal of each pixel point within the current frame, or determining the final grayscale signal of each pixel point within the current frame on the basis of the initial light source brightness, the target light source brightness and the initial grayscale signal of each pixel point within the current frame and by means of looking up a grayscale mapping relationship table; and displaying the current frame on the basis of the final grayscale signal of each pixel point within the current frame. In the method, a display brightness anomaly which may be caused by a current changing over time within a frame is compensated for. Further provided is a display apparatus, comprising a memory and a processor, the processor being used for executing the display method.
G09G 3/00 - Dispositions ou circuits de commande présentant un intérêt uniquement pour l'affichage utilisant des moyens de visualisation autres que les tubes à rayons cathodiques
