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 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 - Methods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
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 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
4.
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 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 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
6.
WAVELENGTH CONVERSION APPARATUS, LIGHT SOURCE SYSTEM AND DISPLAY DEVICE
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.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
H04N 9/31 - Projection devices for colour picture display
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.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
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 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 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity by adjustment of photoluminescent elements
F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
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 (P) to transmit on a path, which is not the exit optical path. Further provided is a projection device comprising the above light source system.
G02B 27/14 - Beam splitting or combining systems operating by reflection only
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
13.
COLOR WHEEL, LIGHT SOURCE SYSTEM AND DISPLAY DEVICE
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.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
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.
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 devices configured to adjust the output brightness of the light source system according to the light source timing modulation signal.
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 screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer, and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface. The plurality of microstructure units forms a serrated structure. The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally internally reflected by the first flat surface and the second flat surface sequentially.
A screen splicing structure is provided. The screen splicing structure includes a substrate layer, a middle adhesive layer, and a surface layer. The substrate layer includes a first substrate and a second substrate. The second substrate is spliced with the first substrate, and a seam is formed at a splicing place. The surface layer and the middle adhesive layer are stacked. The surface layer covers the seam by bonding the middle adhesive layer and the substrate layer. The peeling strength of the surface layer and the substrate layer is greater than or equal to 1,000 gf/inch. A method for forming the screen splicing structure is also provided.
C09J 7/25 - Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
Combined coating of a projection screen, comprising light-absorbing coating and reflective coating. The light-absorbing coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 1-3 parts by weight of black pigment, 20-28 parts by weight of solvent, and 1-5 parts by weight of promoter. The reflective coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 18-23 parts by weight of aluminum silver powder, 26-32 parts by weight of solvent and 1-5 parts by weight of promoter.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
C09D 175/14 - Polyurethanes having carbon-to-carbon unsaturated bonds
C09D 167/06 - Unsaturated polyesters having carbon-to-carbon unsaturation
C09D 171/00 - Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
C09D 163/10 - Epoxy resins modified by unsaturated compounds
C09D 133/04 - Homopolymers or copolymers of esters
An LED display screen, comprising: an LED array, consisting of multiple LED light-emitting units and used for emitting a light; an optical diffusion film, provided at a light exit side of the LED array; a matrix shading frame, comprising multiple hollow shading gratings, the hollow shading gratings corresponding one-to-one to the LED light-emitting units; and a substrate, used for supporting the LED array and the matrix shading frame, where the light emitted by the LED light-emitting units, after running through the hollow shading gratings, is diffused to a viewer side via the optical diffusion film, and the LED light-emitting units emit the light towards the hollow shading gratings. The LED display screen prevents external ambient lights from being shone to optical surfaces of the LED light-emitting units and being reflected thereby, thus increasing the contrast of the LED display screen.
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A wavelength conversion device, a manufacturing method thereof, and a related illumination device. The wavelength conversion device comprises a fluorescent powder layer (110) that is successively stacked, a diffuse reflection layer (120), and a high-thermal-conductivity substrate (130). The diffuse reflection layer (120) comprises white scattered particles for scattering the incident light; the high-thermal-conductivity substrate (130) is one of an aluminum nitride substrate, a silicon nitride substrate, a silicon carbide substrate, a boron nitride substrate, and a beryllium oxide substrate. The wavelength conversion device has good reflectivity and thermal stability.
A light source device and a projection display system are provided. The light source device includes a first light source configured to emit first light, a wavelength conversion unit having at least one region, a second light source configured to emit second light, and a light combining element. The at least one region is configured to receive the first light and be excited to generate excited light. The light combining element is configured to converge excited light emitted from the wavelength conversion device and the second light.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
26.
LIGHT REFLECTING MATERIAL, REFLECTING LAYER AND PREPARATION METHOD THEREFOR
A light reflecting material, a reflecting layer and a preparation method therefor; the light reflecting material comprises glass powder particles (1), diffuser particles, ultrafine nano particles and an organic carrier; the particle size of the glass powder particles (1) is ≤5 μm, the particle size of the diffuser particles is 0.1 μm to 0.2 μm, and the particle size of the ultra-fine nano particles is 0.01 μm to 0.05 μm. The glass powder particles (1), diffuser particles and ultra-fine nano particles the particle sizes of which decrease progressively in sequence by one order of magnitude are used as the raw materials of the reflecting layer, without deceasing the adhesion between the reflecting layer and a substrate, the surface area within the reflecting layer that may cause reflection or refraction is increased to obtain better reflectivity.
A projection screen and a processing method therefor, wherein the projection screen comprises, in sequence from the incident side of projection light, a diffusion layer, a microlens array and a substrate. The inner side of the substrate is provided with a Fresnel microstructure, and part of the surface of the Fresnel microstructure is provided with a reflecting layer while the remaining part of the surface is a light absorbing layer. The microlens array is used for focusing the projection light on the reflecting layer. The reflecting layer is used for reflecting projection light back to the field of view of viewers. Ambient light is mostly absorbed by the light absorbing layer. The settings of the structure and dimension of the microlens array enable the projection light to be only incident onto the reflecting layer of the Fresnel microstructure and the ambient light to be mostly absorbed by the light absorbing layer.
A projection screen and a projection system. The projection screen includes a reflection layer and a light absorption layer for absorbing light which are sequentially arranged from an incident side of projection light; the reflection layer comprises multiple microstructure units; each microstructure unit comprises a first plane and a second plane which are opposite to each other at an angle in a first direction as well as a third plane and a fourth plane which are opposite to each other at an angle in a second direction.
A laser light source (300), a wavelength conversion light source, a light combining light source, and a projection system. The laser light source comprises a laser element array, a focusing optical element (33), a collimation optical element (34), an integrator rod (36) for receiving and homogenizing a secondary laser beam array (382), an angular distribution control element (35) disposed on the light path between the laser element array and the integrator rod (36) for enlarging the divergence angle of the laser beam array (382) in the direction of the short axis of the light distribution, such that the rate between the divergence angle of each of the secondary laser beam that enters the integrator rod (36) in the direction of the short axis of the light distribution and the divergence angle in the direction of the long axis is greater than or equal to 0.7.
A display device includes a control device configured to divide a display period of each frame of an image to be displayed into a first time period and a second time period; and send a light source control signal and a modulation signal corresponding to each pixel in the image to be displayed, according to original image data of each frame of the image to be displayed; a light source system configured to emit light source light according to the light source control signal, the light source light including first light and second light; and a light modulation device configured to modulate the first light according to the modulation signal to generate first image light of the image to be displayed, and modulate the second light according to the modulation signal to generate second image light of the image to be displayed.
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
H04N 9/31 - Projection devices for colour picture display
31.
COLOUR WHEEL ASSEMBLY, LIGHT SOURCE SYSTEM, AND PROJECTION DEVICE
A colour wheel assembly (4), a light source system provided with same, and a projection device, a boron nitride coating being arranged on the side of the colour wheel assembly corresponding to a red fluorescent area (301) and the other side being provided with glass powder, and the two sides of a non-red fluorescent area both being provided with a glass powder coating layer. By means of arranging boron nitride material in a position corresponding to a red fluorescent area, as the boron nitride material has good thermal conductivity relative to the glass powder and the crystal structure of the boron nitride is a layered structure, having the effect of effectively blocking light and thereby further reducing the excitation light incident on the red fluorescent powder, attenuation of the red fluorescence under the direct excitation of strong excitation light can be effectively prevented; thus, there is no need to specially adjust the strength of the excitation light rays on the red fluorescent powder, satisfying the excitation of different fluorescent powders whilst keeping the same excitation light circuit, and effectively reducing the problem of the thermal quenching of the red fluorescent powder, such that the system effects are good, the service life is prolonged, and production costs are effectively reduced.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A display apparatus and a display system are provided. The display apparatus includes: a narrow-spectrum light source configured to emit narrow-spectrum light in elliptical distribution; a reflection device including a reflection surface for reflecting the narrow-spectrum light to obtain to-be-modulated light; and a light modulation device configured to modulate the to-be-modulated light to obtain image light of an to-be-modulated image. The light modulation device includes a modulation surface configured to receive the to-be-modulated light, the modulating surface is at a preset angle to an optical axis of the to-be-modulated light such that the to-be-modulated light forms a circle light spot on the modulating surface. The narrow-spectrum light complying with the elliptical distribution is incident onto the light modulation device to form a circle light spot, thereby helping the light modulation device to emit image light in circular angular distribution, improving light effect and achieving better image display quality.
H04N 9/31 - Projection devices for colour picture display
G02B 26/08 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating for controlling the direction of light
Disclosed is an LED display screen, including an LED array including LED light emitting units and arranged on a substrate, a diffusion film arranged at a light-exiting side of the LED array, and a matrix light-shielding frame arranged between the LED array and the diffusion film. A hollow grid array including hollow grids is included. The hollow grids correspond one-to-one to the LED light emitting units and a projection of each hollow grid on the substrate surrounds a corresponding one of the plurality of LED light emitting units. Light emitted from the LED array can pass through a projection region of the matrix light-shielding frame on the diffusion film and exiting therefrom.
H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
A system and method for dynamically adjusting a color gamut of a display system, and a display system are provided. The display system includes a light source system and an imaging system. The light source system includes an excitation light source and a narrow-spectrum primary-light source. The imaging system includes a spatial light modulation device and the system for dynamically adjusting the color gamut of the display system. The excitation light source emits excitation light which is processed to output at least one broad-spectrum primary light. The narrow-spectrum primary light source outputs at least one narrow-spectrum primary light. The narrow-spectrum primary light and the wide-spectrum primary light are combined and then output to the imaging system. The brightness of light emitted by the excitation light source and the narrow-spectrum primary light source is adjusted. Therefore, the efficiency is improved and the costs are reduced while enhancing the color gamut.
A projection screen and a projection system using the projection screen. The projection screen includes a microstructure layer and a light absorbing layer sequentially stacked from the side where a projected light is introduced. The microstructure layer includes multiple microstructure units. Each microstructure unit includes one reflective surface and one lens surface opposite the reflective surface; moreover, the reflective surface is provided at a position matching the focus of the lens surface. The projection screen and the projection system can resist ambient light and have a high gain and a high contrast.
Disclosed are a light source system and control method thereof, as well as a display device and control method thereof. The light source system comprises: an array light source, comprising M illuminants with independently adjustable brightness; an optical switch, arranged on an emergent optical path of the army light source, for guiding illumination light emitted by the M illuminants to N sub-regions of a preset light region; and a control device for controlling an optical switch to adjust at a preset frame rate the direction of the illumination light emitted by at least part of the M illuminants, and guiding the illumination light emitted by at least part of the illuminants to sub-regions different from the previous one or more image frames of the current image frame.
A detecting device for detecting a rotation speed of the color wheel includes: a first processing unit, used to compare an external ambient temperature with a preset temperature, and outputs a logic level when the external ambient temperature is greater than the preset temperature; and a light-emitting unit, including a light-emitting body for emitting measurement light, a temperature compensation circuit, wherein the temperature compensation circuit adjusts, according to the logic level and the external ambient temperature, the resistance of a circuit in which the light-emitting body is located, causing a driving current of the light-emitting body to be within a preset current range, a reflection unit disposed on a moving color wheel and used to reflect measurement light, and a measurement and control unit used to receive the measurement light emitted periodically by the reflection unit, and to calculate the number of times that the measurement light enters.
G01P 3/36 - Devices characterised by the use of optical means, e.g. using infra-red, visible, or ultra-violet light
G01K 7/22 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a non-linear resistance, e.g. thermistor
G01K 3/00 - Thermometers giving results other than momentary value of temperature
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A light source device, including: an excitation light source; a supplementary light source; and a color wheel, the excitation light source emits first color light to the color wheel, the color wheel includes a first light-emitting region and a wavelength conversion region sequentially arranged along circumferential direction, and a supplementary light-emitting region located on inner or outer side of the wavelength conversion region, the first light-emitting region receives the first color light in a first time period and emit it, the wavelength conversion region receives the first color light in a second time period and emit excited light, and the supplementary light source emits, during the second time period, a supplementary light that broadens a color gamut and at least partially overlaps with a spectrum of the excited light, and the supplementary light from the supplementary light-emitting region is combined with the excited light from the wavelength conversion region.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
H04N 9/31 - Projection devices for colour picture display
G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
G03B 33/12 - Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
The present disclosure provides a light source system and a projection device. The light source system includes: a laser light source, a supplementary light source, a wavelength conversion device and an imaging subsystem. The laser light source is configured to emit laser light. The supplementary light source is configured to emit supplementary light. The wavelength conversion device is configured to convert the laser light into excited light and output first light including the excited light and the laser light. The imaging subsystem is configured to form a first light imaging beam, a supplementary light imaging beam, and a mixed light imaging beam; the imaging subsystem includes a light combining device and a reflective assembly, the light combining device is placed at an intersection of the first light imaging beam and the supplementary light imaging beam, and the reflective assembly is placed between the wavelength conversion device and the light combining device.
A light source device, comprising an excitation light source, a wavelength conversion element, a transparent substrate, and a light splitter. The wavelength conversion element comprises a wavelength conversion area and a scattering area. The excitation light source emits excitation light that has a first polarization state. The transparent substrate guides first part of the excitation light to the scattering area and guides second part of the excitation light to the light splitter; and the light splitter guides, directly or by means of a guiding device, the second part of the excitation light to the wavelength conversion area. The scattering area scatters the first part of the excitation light and guides the scattered first part of the excitation light to the transparent substrate; and the transparent substrate and the light splitter guide the scattered first excitation light to a light-emitting channel directly or by means of the guiding device.
Provided is a light-source system, comprising excitation light source, first supplementary light source, first light-guiding assembly, wavelength conversion apparatus, and second light-guiding assembly. The excitation light source is for emitting excitation light; the first supplementary light source is for emitting first supplementary light. The first light-guiding assembly is for guiding the excitation light to the wavelength conversion apparatus. The wavelength conversion apparatus is far converting, excitation light to excited light and irradiate onto the first light-guiding assembly. The first light-guiding assembly is for guiding excited light to irradiate onto the second light-guiding assembly At least some components of the second light-guiding assembly are arranged on the light path from the first light-guiding assembly. The second light-guiding assembly is for guiding the excited light and/or the first supplementary light, such that the first supplementary light and at least part of the excited light are output from same emission channel.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
42.
Light source system and projection system using the same
Provided is a light source system, including: a light emitting device configured to provide first and second light emitted in time sequence; and a light splitting system including: a light splitting device configured to split first light into first and second primary light and split second light into two paths of third primary light, in such a manner that first and second primary light exit respectively along first and second optical paths in a first time-sequence, first primary light exits along the second optical path and second primary light exits along the first optical path in a second time-sequence, and two paths of third primary light exit respectively along the first and second optical paths in a third time-sequence; and at least two light channels respectively disposed on the first and second optical paths. Each light channel is used for first to third primary light to exit in time sequence.
Provided are a laser combining apparatus and a display device. The laser combining apparatus includes a first group of light sources including first light source arrays, a second group of light sources including second light source arrays, a reflection apparatus including first and second reflection strips, a light converging apparatus and a light collection apparatus. Each first reflection strip reflects light emitted from at least one first light source array, each second reflection strip reflects light emitted from at least one second light source array, and light emitted from each first reflection strip and light emitted from each second reflection strip are also guided to the light converging apparatus. The light converging apparatus converges the light emitted from the first reflection strips and the second reflection strips to the light collection apparatus. The light collection apparatus collects the light converged by the light converging apparatus and then emitting same.
An image data processing device includes a data acquisition module for acquiring image data including original data information of images, the original data information of each image including the luminance value of each pixel in the image, and the luminance range that the image data may represent being Lmin-Lmax; a data conversion module for receiving the image data and converting the original data information of each image into new data information; and a data output module for outputting the new data information of each image in the data conversion module together with the corresponding maximum relative luminance value η thereof. A capturing equipment and a display system are also provided.
H04N 5/235 - Circuitry for compensating for variation in the brightness of the object
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
Provided is a projection screen, comprising a substrate (10), a total reflection layer (20), and a light absorbing layer (30) for absorbing light rays, which are sequentially arranged from a light incident side, wherein the total reflection layer (20) is provided with a plurality of trapezoidal micro-structures extending in the vertical direction of the projection screen, and the plurality of trapezoidal micro-structures is periodically arranged in the horizontal direction of the projection screen. The projection screen has the characteristics of simple structure, easy processing, low cost and high contrast.
A light source system comprises: an exciting light source for emitting exciting light; a supplemental light source for emitting supplemental light; a wavelength conversion apparatus for converting the wavelength of part of the exciting light and emitting first light; and a guide apparatus comprising a converging lens and a light combining element. The converging lens is used for adjusting a divergence angle of the first light. The light combining element comprises a first region. The supplemental light focuses on the vicinity of the first region, and the supplemental light and the first light emitted from the converging lens are combined with etendue at the light combining element. Light spots of the first light on a surface of the wavelength conversion apparatus form a magnified image at the light combining element by means of the converging lens.
Provided is a light source device, including: a first light source module, a set of lenses, a first light-homogenization component, a first light-combination device, and a wavelength conversion device. The first light source module is configured to emit a first light beam having first wavelength. The set of lenses and the first light-homogenization component are located in propagation path of the first light beam. The set of lenses is configured to converge the first light beam. The first light-homogenization component is configured to homogenize the first light beam. A second light beam formed by homogenization is incident on the first light-combination device, and the first light-combination device is located at a focus position of the set of lenses. The wavelength conversion device is located in propagation path of a third light beam emitted from the first light-combination device and configured to form excited light having second wavelength under excitation.
A screen comprises the following layers sequentially stacked from an incident side of projected light rays: a micro-lens layer, a transparent matrix layer, a total internal reflection layer, and a light-absorbing layer. The light-absorbing layer absorbs light passing through the micro-lens layer, the transparent matrix layer and the total internal reflection layer. The micro-lens layer comprises a plurality of micro-lens units. The total internal reflection layer comprises a plurality of microstructure units. The microstructure unit has a lower first flat surface and an upper second flat surface. The first flat surface intersects the second flat surface The micro-lens units and the microstructure units are at least partially arranged in an alternating manner. The projected light rays converged toward the first flat surface exit after being totally reflected by the first flat surface and the second flat surface sequentially.
A projector, comprising: a housing (1) having an air inlet surface (11) and an air outlet surface (12); and a mainboard (2), a hear radiator (7), a color wheel assembly and a lens module located between the air inlet surface (11) and the air outlet surface (12); the air inlet surface (11) is provided with an air inlet, the air outlet surface (12) is provided with an air outlet (121), and an air passage for gas flow is formed between the air inlet and the air outlet (121); the lens module includes a lens (3) and a protective cover (5) arranged at a periphery of the lens, and the protective cover (5) isolates the lens (3) from the air passage. Said projector can prevent dust from entering the lens and can isolate the lens from the internal space of the projector, facilitating disassembly and maintenance of the lens (3), providing a good user experience.
A projection device, comprising a light source device and a control device. The light source device is configured to, according to instructions, emit laser light of first primary color, second primary color, third primary color, and a fourth mixed color fluorescence, respectively. The control device is configured to determine a color gamut range of pixels of an image to be modulated, and transmit the instructions according to the color gamut range to control the light source device to output light required for modulation of the image to be modulated from the laser light of first primary color laser, second primary color, third primary color, and fourth mixed color fluorescence, respectively. The device and method are capable of modulating an image with a wide color gamut, and also save light source energy.
The display device comprises a light source device, an image pre-processing controller, and a light modulation device. The light source device emits first light and second light, wherein a color gamut range of the second light is wider than that of the first light. The image pre-processing controller acquires a color gamut range of the image to be displayed and a brightness value of each pixel based on original image data of an image data to be displayed, and determines a current color gamut range and controls the light source device to emit first light and the second light corresponding to amount of light required in the current color gamut range. The light modulation device modulates the light emitted by the light source device to generate image light of the image to be displayed based on image data corresponding to the current color gamut range.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
A display apparatus comprises a light source device, an image data processing module, a light modulating device and an image synthesizing device. The light source device is configured to emit first light and second light. The image data processing module is configured to receive original image data of an image to be displayed, wherein the original image data of the image to be displayed is based on image data within a second color gamut range and comprises original control signal values of m colors of each pixel; the second color gamut range covers a first color gamut range and has a portion that exceeds the first color gamut range. The image data processing module is further configured to map the original control signal values of the m colors into m corrected control signal values corresponding to the first light and n corrected control signal values corresponding to the second light.
A projection system includes a signal processor, a light source, an optical relay system, an adjusting member, and a DMD. The signal processor receives image data. The signal processor increases grayscale values of pixels of the image data. The optical relay system provides illumination light to the DMD for modulating to obtain projection light required for a projection image. The adjusting member reduces the luminous flux of the illumination light provided to the DMD when the grayscale values of the pixels of the image data are increased. A reduction ratio of the luminous flux of the illumination light matches an increase ratio of the grayscale values of the image data. The DMD modulates the adjusted illumination light according to the image data with increased grayscale values to generate the projection light required for the projection image.
A display apparatus comprising a light source device, an image data processing module, a light modulation device, and an image synthesizing device. The light source device is configured to emit first light and second light. The image data processing module is configured to receive original image data of an image to be displayed, the original image data of the image to be displayed being image data based on a second color gamut range and comprising original control signal values of m colors of pixels, and the second color gamut range covers a first color gamut range and has a portion beyond the first color gamut range. The image data processing module further maps the original control signal values as m corrected control signal values and n control signal values.
The present disclosure provides an adjustment bracket and a projector, and relates to the technical field of projection devices. The adjustment bracket includes: an adjustment roller; an adjustment foot; and an adjustment foot gear. An adjustment gear is fixed to the adjustment roller, the adjustment gear is engaged with the adjustment foot gear, internal threads are provided at a center position of the adjustment foot gear, an outer wall of the adjustment foot is provided with external threads, and the adjustment foot is connected to the adjustment foot gear by the internal threads and the external threads. A pitch angle or height of an electronic device such as a projector can be adjusted by a combination of a gear transmission and threads, and a structure thereof is simple and an operation thereof is convenient.
F16M 7/00 - FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS - Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
F16M 11/04 - Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
F16M 11/10 - Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
A projection system, comprising a light modulation device, a light source system and a light offset device. The light source system is used for emitting one or more illumination sub-beams. The light modulation device is used for modulating illumination light according to image data to form image light, the image light being used for displaying an image corresponding to the image data. The light offset device is used for transferring one illumination sub-beam to each zone of a micro-mirror unit by means of a time sequence such that the micro-mirror unit modulates the illumination sub-beam by means of a time sequence to form image light of a pixel corresponding to each zone, wherein each zone corresponds to one pixel of an image.
A projection screen, comprising a screen substrate and a plurality of light reflecting portions, wherein the light reflecting portion is arranged on an incident side of the screen substrate, and has a first surface and a second surface that face different directions, the first surface facing an incident direction of projection light, and the plurality of light reflecting portions are continuously arranged on the screen substrate to form a structure of sawtooth shape, wherein a light absorbing layer is provided on the second surface; and a wavelength-selection filter layer is provided on the first surface, and the wavelength-selection filter layer is configured to reflect the projection light and transmit and absorb at least part of ambient light.
A light source system (100) comprises: an excitation light source (120) used to generate an excitation light beam; a waveform conversion device (160) comprising a conversion region (161) and a non-conversion region (164), wherein the conversion region (161) is used to perform a wavelength conversion operation on a portion of the excitation light beam and to emit the same as a first light beam along a first optical path, the non-conversion region (164) is used to scatter another portion of the excitation light beam and to emit the same as a second light beam along a second optical path, and the conversion region (161) is also used to emit an unconverted portion of the excitation light beam as a third light beam along a third optical path; an adjustment device used to guide the first light beam, the second light beam and the third light beam entering thereto, and to perform adjustment such that the first light beam, the second light beam and the third light beam are emitted at a first divergence angle, a second divergence angle, and a third divergence angle, respectively; and a first reflection element (150) used to guide the second light beam and a portion of the third light beam to enter the adjustment device. Also disclosed is a projection device comprising the light source system.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
59.
CURVED SCREEN AND METHOD OF ARRANGING MICROSTRUCTURE THEREIN, AND PROJECTION SYSTEM
A curved screen (B) comprises the following layers sequentially arranged from inside to outside: a black light-absorbing layer (100), a microstructure array layer (200), and a transparent matrix layer (300). The microstructure array layer (200) consists of a plurality of microstructure units. The microstructure unit is a V-shaped recess (210) consisting of two intersecting inclined surfaces. The microstructure array layer (200) is rotationally symmetrical with respect to a center line of the curved screen (B). Angles of the V-shaped recesses (210) in respective longitudinal cross sections of the curved screen (B) are uniquely determined according to incident angles of light rays from a projector. Also disclosed are a method of arranging microstructures in the curved screen (B) and a projection system comprising the curved screen (B). The curved screen (B) has a higher contrast, improved brightness uniformity and an enlarged field of view.
A projection system, comprising: a light-emitting apparatus for providing first light and second light emitted in a time sequence; a light-splitting system for dividing the first light into first primary color light and second primary color light, and dividing the second light into two paths of third primary color light; a spatial light modulator, comprising a first region and a second region, wherein the primary color light emitted along a first optical path enters the first region, and the primary color light emitted along a second optical path enters the second region; and an image processing apparatus for dividing, corresponding to the first region and the second region, image signals to be output into two groups, and changing the sequence of at least one of the groups so as to match the time sequence of primary color light received in a corresponding region.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
G03B 21/00 - Projectors or projection-type viewers; Accessories therefor
Provided is a wavelength conversion apparatus that includes a metal substrate; and a light-emitting ceramic layer. The light-emitting ceramic layer is used for absorbing excitation light and emitting excited light having a wavelength different from that of the excitation light. A metal reflective layer and a silica gel layer are stacked between the metal substrate and the light-emitting ceramic layer, and the reflective layer is used for reflecting the excited light and an unconverted part of the excitation light. The wavelength conversion device can reduce heat generated in the wavelength conversion apparatus, while realizing an aim of emitting excited light having a high illumination intensity in the wavelength conversion apparatus.
F21K 9/64 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
A screen capable of reflecting projected light from a projector to a viewer's field of view, at least comprising a surface diffusion layer (14), a transmission light-absorbing layer (13) and a projection reflective layer (12) which are stacked sequentially from the incident side of the projected light. The projection reflective layer (12) selectively reflects the projected light. The transmission light-absorbing layer (13) comprises light-absorbing material particles, and the distribution of the light-absorbing material particles in the transmission light-absorbing layer (13) is set according to the distribution of the Fresnel loss of the projected light on the surface of the screen, such that the light transmittance of the transmission light-absorbing layer (13) is higher in the region where the Fresnel loss is larger. Further disclosed is a projection system comprising the screen. The screen and the projection system have high contrast and high brightness uniformity.
A projection system includes a light emitting device, a light valve and a control device. The light emitting device emits light of colors at least including a first color, a second color and a third color, and the third color is a color mixing the first color and the second color. The control device acquires gray scale values corresponding to at least the first color and the second color of each pixel point in an input image, and determines gray scale values corresponding to the first color, the second color and the third color of a corresponding pixel point in a pre-displayed image according to the gray scale values corresponding to the first color and the second color. The present disclosure also provides an image modulation method applied to the projection system.
A color wheel heat dissipation device and a projection apparatus having the same are provided. The color wheel heat dissipation device includes a housing, a color wheel, a built-in radiator and a fan, wherein the housing includes a first cavity, a second cavity, and a third cavity that are mutually communicated with one another, the first cavity and the second cavity are sequentially arranged in an airflow direction; the built-in radiator is located in the first cavity; the fan is located in the second cavity; and the color wheel is located in the third cavity. The color wheel heat dissipation device and the projection apparatus having the color wheel heat dissipation device can maximally increase the heat exchange rate in the color wheel cavity, improve performance of the color wheel, reduce temperature of the color wheel, thereby achieving the purpose of improving efficiency and service life of the product.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A composite ceramic with improved mechanical performance and a preparation method therefor. The composite ceramic comprises fluorescent powder, a ceramic matrix, and an optional sintering aid. The weight ratio of the fluorescent powder to the ceramic matrix is from 3:17 to 9:1, and the relative density of the composite ceramic is greater than 95%. The preparation method comprises using core shell-structured coated fluorescent powder as a raw material, and ball-milling and sintering the raw material to obtain the composite ceramic.
A total internal reflection screen includes a light diffusion layer, a total internal reflection layer and a light absorption layer arranged sequentially from an incidence side of a projected light. The light absorption layer absorbs an incident light and the light diffusion layer increases a divergence angle of an emergent light. The total internal reflection layer includes a plurality of microstructure units that is rotationally symmetrical and extends continuously in a plane of the total internal reflection screen. Each of the microstructure units includes 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 includes two intersecting planes, which are disposed in such a way that the projected light is totally internally reflected continuously at the two intersecting planes.
A light source system includes an excitation light unit, a spectral filter unit, a scattering unit, and an excited-light unit. The excitation light unit is configured to emit excitation light. In an embodiment, the spectral filter unit reflects a portion of the excitation light to the scattering unit, the scattering unit scatters the same to generate a first light and a second light, and the spectral filter unit transmits the second light. The spectral filter unit also transmits another part of the excitation light to the excited-light unit, the excited-light unit emits excited light under the illumination thereof, and the spectral filter unit reflects the excited light, so that the spectral filter unit merges and emits the transmitted second light and the reflected excited light. The excitation light is thus split into two paths at the spectral filter unit, and finally emits light by combining excitation light and excited light.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A projector control system and a control method corresponding to same. The system includes a main controller, a dynamic current adjusting module, a color wheel controller, a color wheel rotation speed feedback module, and a light source; the dynamic current adjusting module includes a DLP module, a light source controller, and a power supply module; the color wheel rotation speed feedback module generates a feedback signal; the DLP module receives the feedback signal, and the DLP module receives dynamic brightness information and sends processed dynamic brightness information and a control signal to the light source controller according to the feedback signal; the light source controller controls the power module according to the received processed dynamic brightness information and the control signal sent by the DLP module to turn on a power switch and output a corresponding current value.
H04N 9/31 - Projection devices for colour picture display
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
An excitation light intensity control system, including a lighting part, an imaging part and a control part. The lighting part includes a light source; the imaging part includes a light modulator and a color conversion element; the excitation light emitted from the light source is imported to the light modulator for modulation; the modulated excitation light excites the color conversion element to produce multicolor excited light; the lighting part further includes a light recycling system used for recoupling part of the excitation light emitted from the light modulator to be incident to the light modulator; the control part includes a controller used for receiving original image data and controlling the intensity of the excitation light emitted from the light modulator and/or the light source.
A laser illumination device and a projection system including the same. The laser illumination device includes a laser source, a light combining assembly, a micro-lens assembly, and a plurality of cylindrical lens assemblies; the plurality of cylindrical lens assemblies are provided in a light transmission path of the laser source; the micro-lens assembly is mounted at one side of the light combining assembly; each cylindrical lens assembly includes a first cylindrical lens array and a second cylindrical lens array; and the first cylindrical lens array and the second cylindrical lens array form a preset angle.
The light source system includes a first light source, a light splitting device, a wavelength conversion device, and a light guiding device. The first light source emits first light. The wavelength conversion device includes at least a first color light region and a second color light region, which are sequentially inserted into an outgoing path of the first light. The first color light region emits second light excited by the first light to the light splitting device. The second color light region reflects the first light to the light splitting device. The light splitting device directs one of the first light and the second light to a light path and directs the other to the light guiding device. The first light or the second light is reflected by the light guiding device to the light splitting device, and then is guided to the light path by the light splitting device.
A light source system includes an exciting light source, a collection system, a wavelength conversion device, a relay system, an optical-mechanical system, a detection device, and a distance adjustment device. The exciting light source emits exciting light. The conversion region converts the exciting light into excited light. Optical axes of the excited light and the exciting light that are emitted from the wavelength conversion device do not coincide with each other. The excited light and exciting light collected by the collection system are guided to the optical-mechanical system via the relay system. The detection device detects information on brightness and/or color coordinates of the light emitted from the optical-mechanical system. The distance adjustment device adjusts a distance between the collection system and the wavelength conversion device in such a manner that the brightness and/or color coordinates of the light emitted from the optical-mechanical system meet a preset condition.
F21V 9/32 - Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
F21V 5/04 - Refractors for light sources of lens shape
F21V 9/06 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
F21V 13/04 - Combinations of only two kinds of elements the elements being reflectors and refractors
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
73.
Wavelength conversion apparatus, light source system and projection device
The present disclosure relates to a wavelength conversion device, a light source and a projection device. A light conversion region and a light path conversion region are provided on one surface of the wavelength conversion device. The light path conversion region includes a first segment and a second segment. The first segment and the second segment are configured to alternately receive excitation light and respectively guide the excitation light to different preset light paths. The light conversion region is provided with a wavelength conversion material for receiving excitation light emitted from one of the segments, converting the received excitation light into excited light that has at least one wavelength range different from a wavelength of the excitation light, and emitting the excited light.
The present disclosure relates to an image processing apparatus, a display apparatus, and an image processing and display apparatus and method. The image processing and display apparatus includes a data acquisition module, a data conversion and storage module, a data analysis module, a light-emitting module, and an image modulation module. The data conversion and storage module stores brightness data of a color of each pixel of an image as N-bit grayscale data based on data of a highest brightness of the color of the image and stores a brightness increase index of the color of the image. The light-emitting module adjusts emitted illumination light of the color based on the brightness increase index, so that the image modulation module modulates the illumination light of the color based on the N-bit grayscale data to modulate a displayed image.
H04N 9/31 - Projection devices for colour picture display
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
75.
Multicolor illumination device using moving plate with wavelength conversion materials
A multicolor illumination device using an excitation light source and a multi-segmented moving plate with wavelength conversion materials (e.g. phosphors) is disclosed. The exciting light source is a light emitting diode or a laser diode emitting in the UV and/or blue region. The wavelength conversion materials absorb the excitation light and emit longer wavelength light. Each segment of the moving plate contains a different wavelength conversion material or no wavelength conversion material. The plate is supported to move so that different segments are exposed to the excitation light at different times. The plate may be a wheel or rectangular in shape and rotates or oscillates linearly. When the plate moves, light of different colors is generated sequentially in time by the different wavelength conversion materials in different segments of the plate. The multicolor illumination device may be used in a projector system having a microdisplay imager for image display.
H04N 9/31 - Projection devices for colour picture display
F21V 17/04 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages onto or by the light source
F21S 10/02 - Lighting devices or systems producing a varying lighting effect changing colours
A light source, including an excitation light source, an excited light supplying device, a partially coating film and a light supplementing device. The partially coating film is arranged on light path of the excitation light and the excited light, which includes a first area for transmitting/reflecting the excitation light to form main path light or side path light respectively, and a second region area for reflecting/transmitting all incident light; the excited light supplying device is provided on light path of the main path light to generate excited light transmitted to the partially coating film after irradiated by main path light; the light supplement device is provided on light path of the side path light for performing light homogenization on the side path light and generating supplemental light transmitted to the partially coating film; and the supplemental light combines with the excited light after passing through the partially coating film.
An optical module a first adjusting screw rod, a first anti-loosening assembly, a second adjusting screw and a second anti-loosening assembly. The first adjusting screw rod is configured to adjust a position of a component in a first direction a, and the second adjusting screw is configured to adjust a position of a component in a second direction b. The first anti-loosening assembly is configured to lock the first adjusting screw rod after position adjustment of the first adjusting screw rod, and the second anti-loosening assembly is configured to lock the second adjusting screw after position adjustment of the second adjusting screw.
A projection display system, comprising: a first light source for emitting a first light; a first light modulation system for receiving the first light and modulating the first light into a first image light; a supplementary light source for at least emitting a supplementary light, wherein a spectrum of the first light comprises a spectrum of the supplementary light; a second light modulation system for receiving the supplementary light and modulating the supplementary light into a supplementary image light; a light combining device for combining the first image light and the supplementary image light, the beam cross-sectional area of the first image light being greater than the beam cross-sectional area of the supplementary image light at the light combining position; and a projection lens system for causing the first image light and the supplementary image light to form coincident images at a predetermined position.
3-coated fluorescent powder being present in 40%-90% by weight of the mixed powder; and pre-pressing and sintering the mixed powder to obtain the ceramic composite material.
Provided is a light source device including a first light source, a light guiding system and a wavelength conversion device. The first light source emits first exciting light which is incident to the light guiding system along an incidence light channel. The wavelength conversion section absorbs the first exciting light and emits excited light. The first exciting light is obliquely incident to a surface of the reflective section and reflected to form second exciting light. The light guiding system collects the excited light and the second exciting light and guides them to be emitted along an exiting light channel. The light guiding system includes an optical path correcting assembly, which reflects the second exciting light in such a manner that main optical axes of the reflected second exciting light and the excited light coincide, and changes a beam angular distribution of the second exciting light.
Disclosed is a light source device, including a first light source, a fly-eye lens pair, a light guiding system and a wavelength conversion device. The first light source emits first exciting light. The wavelength conversion device includes a wavelength conversion section and a reflective section. The wavelength conversion section absorbs the first exciting light and emits excited light. The first exciting light is obliquely incident to the reflective section and is reflected to form second exciting light. The light guiding system is also used for collecting the excited light and the second exciting light and guiding them to exit along an exiting light channel. The light guiding system reflects the second exciting light in such a manner that main optical axes of the reflected second exciting light and the excited light coincide. Lens units perform imaging with overlap on a surface of the wavelength conversion device.
A light source system includes a first light source emitting first laser; a wavelength conversion device; a driver device driving the wavelength conversion device to move in such a manner that regions of the wavelength conversion device sequentially and periodically receive the first laser; a second light source emitting supplementary light consistent in color with light emitted by one primary color light region; a control device controlling on and off of the second light source, the control device controlling the second light source to be on in at least two of: every time period during which a primary color light region of a same color is receiving the first laser, every time period during which the mixed color light region is receiving the first laser, and some time periods during which a primary color light region of a different color is receiving the first laser.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A display system includes: a light source, a light modulator, a recovery device, and a light intensity adjustment device. The light source emits original light that is incident to the light modulator. The light modulator modulates, on the basis of image data of an image to be displayed, the light incident thereto so as to form image light and non-image light. The recovery device recovers the non-image light, and the recovered non-image light is incident to the light modulator. The light intensity adjustment device adjusts, on the basis of the intensity of the non-image light corresponding to the currently modulated image to be displayed, the intensity of the original light emitted by the light source, thus allowing total intensity of the original light and the recovered non-image light that are incident to the light modulator to be kept consistent in modulation periods for different images to be displayed.
H04N 9/31 - Projection devices for colour picture display
G02B 26/04 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
A lens sealing sleeve includes a hollow cylindrical sleeve body used for a lens barrel to pass through and including a plurality of fold portions arranged along the axial direction, and two ends of the sleeve body are provided with a first opening and a second opening. The lens sealing sleeve also includes a first connection portion and a second connection portion. The first connection portion includes a first protrusion at least partially surrounding the first opening and correspondingly extending in a direction facing away from a central line of the first opening. The second connection portion includes a second protrusion at least partially surrounding the second opening and correspondingly extending in a direction facing away from a central line of the second opening. The first protrusion is provided with a first connection hole. The second protrusion is respectively provided with a second connection hole.
A light source device and a projection display system. The light source device comprises: a first light source (301) used for emitting a first light; a wavelength conversion unit (303) provided with at least two areas, that being a first area and a second area, the first area and the second area emitting the first light and the excited light in a time-division manner; a second light source (302) used for emitting a second light; a light splitting and merging component (304) used for guiding the first light, the excited light, and the second light, allowing the first light emitted by the wavelength conversion unit (303), the excited light, and the second light to converge and then be emitted in a same direction. The light source device increases brightness while keeping balance of the white light.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A light-emitting ceramic and a light-emitting device. The light-emitting ceramic comprises a YAG substrate and light-emitting centers and diffusion particles evenly dispersed in the YAG substrate. The light-emitting centers are lanthanide-doped YAG fluorescent powder particles of 10-20 μm in grain size. The particle size of the scattering particles is 20-50 nm. The YAG substrate is a lanthanide-doped YAG ceramic. Also, the grain size of the YAG substrate is less than the grain size of the YAG fluorescent powder particles.
C04B 35/50 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare earth compounds
H01L 33/46 - Reflective coating, e.g. dielectric Bragg reflector
Provided is a projection screen. The screen includes: a base layer; a cylindrical lens layer formed on a side of the base layer close to a viewer, a Fresnel structure formed on a side of the base layer facing away from the viewer, a reflective layer formed on a side of the Fresnel structure facing away from the base layer, including reflective particles and configured to scatter and reflect, in a solid angle range corresponding to a particle size of the reflective particles, incident light incident from the Fresnel structure, to form reflected light; and a light-absorbing layer formed on a side of the reflective layer facing away from the Fresnel structure. The cylindrical lens layer includes a plurality of cylindrical lenses each having an axis perpendicular to a horizontal direction, and scatters light from the Fresnel structure to increase a viewing angle in the horizontal direction.
Disclosed are a wavelength conversion device, a light-emitting device and a projection system, comprising a wavelength conversion layer having a first surface and a second surface opposite each other. The first surface receives an excitation light. The wavelength conversion layer absorbs the excitation to produce a converted light and emits the converted light or the mixture of the converted light and the excitation light from the first surface and the second surface. A scattering reflective substrate is stacked with the wavelength conversion layer and includes a white porous ceramic or a white scattering material for scattering the incident light. The scattering reflective substrate includes a third surface facing the second surface and scatters at least a part of the incident light on the third surface and then emits all the light from the third surface to the second surface.
H04N 9/31 - Projection devices for colour picture display
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
89.
Wavelength conversion device and method for manufacturing the same
A wavelength conversion device, comprising a light-emitting layer, a reflection layer, and a substrate layer stacked upon each other in that order. The light-emitting layer comprises a wavelength conversion material and a first glass powder. The reflection layer comprises a reflection particle and a second glass powder. The second glass powder has a smaller particle diameter compared to the first glass powder. The technical solution achieves equivalent softening of the reflection layer and light-emitting layer in a sintering process for manufacturing the wavelength conversion device, thereby overcoming the issue of inadequate softening of the reflection layer and improving an adhesive strength between the reflection layer and the substrate layer.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
C03C 14/00 - Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
C09K 11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
Disclosed are a housing and a projection device comprising the housing. The housing comprises a case body, the case body comprising a first substrate, a second substrate and an annular connection plate, wherein the first substrate and the second substrate are arranged oppositely, the annular connection plate is disposed between the first substrate and the second substrate, the second substrate comprises a lens placement region in which a lens of the projection device is to be arranged, and a region, corresponding to the lens, of the annular connection plate is an opening region. The housing further comprises a knob lens cap arranged at the lens placement region, wherein the knob lens cap comprises a knob portion movably connected to the case body and extending out of the case body; and the knob portion drives the knob lens cap to rotate and move so as to shelter or expose the lens.
Provided are a light-reflecting microstructure, a projection screen and a projection system. The light-reflecting microstructure includes a transparent structure, the transparent structure including a light incident surface, a light-reflecting surface and a light-absorption surface connecting the light incident surface and the light-reflecting surface; a light-absorption structure located on the light-absorption surface; and a reflection layer located on the light-reflecting surface. The transparent structure is configured to refract projected light incident on the light incident surface at a preset angle to the reflection layer, and refract stray light incident on the light incident surface at another angle to the light-absorption structure. The reflection layer is configured to reflect the projected light in such a manner that the projected light is emitted at a certain angle from the light incident surface after being refracted twice through the transparent structure. The light-absorption structure is configured to absorb stray light.
A reconfigurable mobile shelter system includes multiple shelter structures and a management system communicating with the shelter structures. The shelter structures are physically independent of each other, each located at a selected location, and configured to be moveable to another selected location without being disassembled and re-assembled. Each shelter structure has an access control subsystem and a user information collection module, and transmits user information to the management system. The management system, based on the received user information, determines whether to permit access by a user to a shelter structure and use of equipment inside, and transmits corresponding commands to the shelter structure. The management system also determines whether any shelter structure is to be moved to another selected location, and controls moving equipment to move them. The reconfigurable mobile shelter system may be used as a lodging facility, entertainment facility, office facility, education facility, meeting facility, etc.
E04H 1/02 - Dwelling houses; Buildings for temporary habitation
E04H 1/12 - Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts, dressing cubicles
E04H 1/00 - Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination, staggered storeys
G06Q 10/06 - Resources, workflows, human or project management, e.g. organising, planning, scheduling or allocating time, human or machine resources; Enterprise planning; Organisational models
G06Q 10/08 - Logistics, e.g. warehousing, loading, distribution or shipping; Inventory or stock management, e.g. order filling, procurement or balancing against orders
94.
Light source device and projection apparatus having light-combination device located at focus position of lenses
Provided is a light source device, including: a first light source module, a set of lenses, a first light-homogenization component, a first light-combination device, and a wavelength conversion device. The first light source module is configured to emit a first light beam having first wavelength. The set of lenses and the first light-homogenization component are located in propagation path of the first light beam. The set of lenses is configured to converge the first light beam. The first light-homogenization component is configured to homogenize the first light beam. A second light beam formed by homogenization is incident on the first light-combination device, and the first light-combination device is located at a focus position of the set of lenses. The wavelength conversion device is located in propagation path of a third light beam emitted from the first light-combination device and configured to form excited light having second wavelength under excitation.
Provided is a light-source system, comprising excitation light source, first supplementary light source, first light-guiding assembly, wavelength conversion apparatus, and second light-guiding assembly. The excitation light source is for emitting excitation light; the first supplementary light source is for emitting first supplementary light. The first light-guiding assembly is for guiding the excitation light to the wavelength conversion apparatus. The wavelength conversion apparatus is for converting excitation light to excited light and irradiate onto the first light-guiding assembly. The first light-guiding assembly is for guiding excited light to irradiate onto the second light-guiding assembly. At least some components of the second light-guiding assembly are arranged on the light path from the first light-guiding assembly. The second light-guiding assembly is for guiding the excited light and/or the first supplementary light, such that the first supplementary light and at least part of the excited light are output from same emission channel.
G02B 26/00 - Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
A light emitting device includes a first light source, a light guiding system and a wavelength conversion device. The first light source is configured to emit first excitation light which enters the light guiding system via an incident light channel. The light guiding system is configured to guide the first excitation light to the wavelength conversion device. The wavelength conversion device includes a reflecting segment that reflects the first excitation light to form second excitation light. The light guiding system is further configured to collect the second excitation light and guide the second excitation light to exit via an output light channel. The first excitation light and the second excitation light have non-overlapping light paths.
Disclosed are a color wheel device and a projector, wherein the color wheel device comprises: a color wheel chamber used for accommodating a color wheel module and provided with an air inlet and an air outlet; a heat exchanger having a heat-exchange core, the heat-exchange core being provided with a first channel for air in the color wheel chamber passing, the air outlet of the color wheel chamber being communicated with a heat-exchange inlet of the first channel, and a heat-exchange outlet of the first channel being communicated with the air inlet of the color wheel chamber to form a closed circulating air duct, wherein the first channel has multiple layers spaced apart from one another, and the space between two adjacent layers of the first channel forms a second channel for outside air passing; and an air propulsion device used for accelerating air flow.
A display system and method are provided. The display system includes a light source device, an optical processing assembly, a reflection device, a light modulator and a controller. The light source device is configured to emit a plurality of light beams; the optical processing assembly is configured to perform a light path adjustment on each light beam from the light source device in such a manner that the light beam irradiates on the reflection device at a preset light-cone angle; the reflection device is configured to reflect the light beams from the optical processing assembly to the light modulator; the controller is connected to the light source device and the light modulator, and is configured to control a light emission state of the light source device; and the light modulator is configured to modulate the light beams through respective controllable units, so as to emit desired display light.
A light emitting device comprises a coherent source generating coherent light, a diffusing element, and a light guide part. The diffusing element includes first and second surfaces opposite to each other, and disperses the coherent light from the coherent source to generate incoherent light. The light guide part is provided on the side of the first surface of the diffusing element; it guides the coherent light emitting from the coherent source to be incident on the first surface to form a first light path, guides a part of incoherent light emitting from the first surface to emit through the first light path, guides the remaining incoherent light to emit through a second light path, and separates the first and second light paths. The luminous flux of the incoherent light emitting through the first light path is less than that of the incoherent light emitting through the second light path.
F21K 9/65 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
A projection system has a light source, a spatial light modulator, a light recycling system, and a lens assembly. The light source emits source light toward the spatial light modulator. The spatial light modulator modulates, according to an image signal, light incident on the spatial light modulator, so as to form projection light and non-projection light. The light recycling system receives at least a portion of the non-projection light, and guides the at least a portion of the non-projection light toward the spatial light modulator. The lens assembly receives and emits the projection light to form a projection image. The projection system of the present disclosure enables efficient use of non-projection light.
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