In embodiments of the present invention, a method and system is provided for commissioning improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more LED light bars, integrated sensors, onboard intelligence to send and receive signals and control the LED light bars, and network connectivity to other fixtures.
H05B 47/11 - Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
H05B 47/12 - Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by detecting audible sound
H05B 47/19 - Controlling the light source by remote control via wireless transmission
H05B 47/105 - Controlling the light source in response to determined parameters
H05B 47/155 - Coordinated control of two or more light sources
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
F21V 21/00 - Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
F21V 29/56 - Cooling arrangements using liquid coolants
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21S 9/02 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 9/04 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
A vehicle lamp capsule 32 having a base 34 having a spring 5 which, when lamp capsule 32 is installed, biases an inner surface of a vehicle lamp reflector 12. Spring 5 is monolithically formed with base 34 along with at least one reflector-locating structure on the base such as circumferentially extending exterior locating surface 44 and/or retaining keys 42. Base 34 and spring 5 may be molded of a plastics material. In other embodiments base 34 and spring 5 are made in one piece of sheet metal. The spring 5 formed unitary with the lamp base 34 meets regulatory requirements and avoids a risk of dislodgement of a conventional separate piece-part metal spring which could cause an electrical short when the lamp is installed in the field. The lamp capsule 32 is suitably an H13-style lamp.
Techniques and architecture are disclosed for mobile transport systems configured to determine vehicle positions within an area using light-based communication signals. The system includes a plurality of luminaires located in an area and configured to transmit luminaire position data recognizable by a sensor disposed on a vehicle. The sensor receives an image of a luminaire including a light-based communication signal encoded with luminaire position data. Luminaire position data can be combined with luminaire layout information to determine a known location of the luminaire. A vehicle position relative to the known luminaire location can be determined based on mathematical relationships. Vehicle orientation relative to the area can be determined based an asymmetric fiducial pattern or multiple known luminaire locations. The system can combine a vehicle position relative to a known luminaire location with vehicle orientation relative to the area to determine a vehicle position relative to the area.
First adapter (10) and second adapter (40) are each separately securable to a respective automotive light bar (200, 201) at mutually facing lateral light bar end caps (206). The adapters (10, 40) interfit, such as first adapter (10) having one or more tenons (14; 18) received in shape-conforming recess or mortise (44) of second adapter (40). The coupling assembly formed from interfit first and second adapters (10, 40) sufficiently supports a midspan region of conjoined light bars (200, 201) to permit omission of mounting L-brackets (208) conventionally required at the mutually facing light bar ends (206), thus allowing fewer holes to be drilled in vehicle roof or bumper (212) and resulting in an aesthetically cleaner presentation of the overall lengthened light bar assembly.
F21K 9/20 - Light sources comprising attachment means
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21V 21/005 - Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
F21V 19/00 - Fastening of light sources or lamp holders
F21V 17/10 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
F21V 15/015 - Devices for covering joints between adjacent lighting devices; End coverings
B62D 65/16 - Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being exterior fittings, e.g. bumpers, lights, wipers
F21W 102/00 - Exterior vehicle lighting devices for illuminating purposes
F21W 107/10 - Use or application of lighting devices on or in particular types of vehicles for land vehicles
B60Q 1/18 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights being additional front lights
F21Y 103/00 - Elongate light sources, e.g. fluorescent tubes
First adapter (10) and second adapter (40) are each separately securable to a respective automotive light bar (200, 201) at mutually facing lateral light bar end caps (206). The adapters (10, 40) interfit, such as first adapter (10) having one or more tenons (14; 18) received in shape-conforming recess or mortise (44) of second adapter (40). The coupling assembly formed from interfit first and second adapters (10, 40) sufficiently supports a midspan region of conjoined light bars (200, 201) to permit omission of mounting L-brackets (208) conventionally required at the mutually facing light bar ends (206), thus allowing fewer holes to be drilled in vehicle roof or bumper (212) and resulting in an aesthetically cleaner presentation of the overall lengthened light bar assembly.
F21V 19/00 - Fastening of light sources or lamp holders
F21V 17/10 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
B62D 65/16 - Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components the sub-units or components being exterior fittings, e.g. bumpers, lights, wipers
F21W 107/10 - Use or application of lighting devices on or in particular types of vehicles for land vehicles
F21K 9/20 - Light sources comprising attachment means
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21V 21/005 - Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
F21V 15/015 - Devices for covering joints between adjacent lighting devices; End coverings
F21W 102/00 - Exterior vehicle lighting devices for illuminating purposes
B60Q 1/18 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights being additional front lights
F21Y 103/00 - Elongate light sources, e.g. fluorescent tubes
A presence or an absence of an occupant is detected, and an occupancy sensor signal is generated representative of an active state in which the presence of the occupant is detected, and an inactive state in which the absence of the occupant is detected. An ambient light sensor detects the ambient light level and generates an ambient light sensor signal representative of the ambient light level. Dimmable illumination is generated at a first dimming level, based on the ambient light level, corresponding to the active state and a second dimming level corresponding to the inactive state. A transition delay time between an onset of the inactive state and a transition between the first dimming level and the second dimming level may be controlled. The first dimming level, the second dimming level, and/or the transition delay time may be variably set or controlled locally or via a remote device.
F21S 9/04 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
F21V 19/00 - Fastening of light sources or lamp holders
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
F21S 8/08 - Lighting devices intended for fixed installation with a standard
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
The systems and method disclosed herein include a LCom-enabled luminaire configured to transmit a maintenance trigger encoded in an LCom signal in response to detecting an error or maintenance condition in the LCom-enabled luminaire, receive an access request, transmit maintenance information in response to the access request, and receive correction information to correct the error or maintenance condition. The systems and methods further include a receiver device configured to receive the maintenance trigger, generate the access request based on the maintenance trigger, transmit the access request to the LCom-enabled luminaire, receive maintenance information in response to the access request, and transmit control commands based on the maintenance information.
G01S 1/04 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves - Details
Techniques are disclosed for decoding light based communication (LBC) messages transmitted between a transmitter device and a receiver device. The receiver device includes a processor that executes a process to decode a received LBC message. The processor determines a moving average and removes the moving average to provide a second digital message (with the moving average removed), to account for any noises or interferences. The moving average may be determined using a length-preserving moving average. The peak location in the second digital message is identified and used as a start position for synchronization when the peak location is above the threshold. Sampling points are derived, and logical maximum and minimum values (1's and 0's) are assigned to one or more of the sampling points. The logical values are decoded to generate a decoded sequence of data representative of the received LBC message.
In embodiments of the present invention, a method and system is provided for commissioning improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more LED light bars, integrated sensors, onboard intelligence to send and receive signals and control the LED light bars, and network connectivity to other fixtures.
H05B 47/11 - Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
H05B 47/12 - Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by detecting audible sound
H05B 47/19 - Controlling the light source by remote control via wireless transmission
H05B 47/105 - Controlling the light source in response to determined parameters
H05B 47/155 - Coordinated control of two or more light sources
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
F21V 21/00 - Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
F21V 29/56 - Cooling arrangements using liquid coolants
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21S 9/02 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 9/04 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
An automotive lighting system (41) includes an automotive lamp having an LED array (14) and a lens (34). The lens (34) images a square field of illumination (101) into rectangular field of illumination (48) to support adaptive front lighting in an automotive environment (28). The lens (34) includes light-transmissive first, second, and third regions (64, 66, 68), and a baffle (70) adapted to obstruct light from spreading between the light-transmissive first, second, and third regions (64, 66, 68). The baffle (70) is disposed between the LED array (14) and light receiving surfaces (98, 104, 110) of the light-transmissive first, second, and third regions (64, 66, 68). The lens (34) enables imaging of an approximately rectangular field of illumination (48) from a single chip (12), reducing cost and cooling needs of adaptive front lighting systems.
F21S 41/265 - Composite lenses; Lenses with a patch-like shape
F21S 41/43 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
G02B 3/04 - Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere
F21S 41/143 - Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
B60Q 1/08 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
Various embodiments include a voltage adjusting block (VAB) coupled to a light emitting diode (LED) string. The VAB includes a first switch having a first lead connected to a voltage input, and having a second lead, the first switch having a controllable duty cycle, a first diode having a cathode connected to the second lead of the first switch, and having an anode, a first inductor having a first lead connected to the cathode of the first diode, and having a second lead, and a first capacitor having a first lead connected to the anode of the first diode and having a second lead connected to the second lead of the first inductor. The VAB may provide a variable voltage across the anode of the first diode and the second lead of the first capacitor dependent upon a number of LEDs in the LED string being turned on.
H05B 45/48 - Circuit arrangements for operating light-emitting diodes [LED] - Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
B60Q 1/14 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
A method of setting luminance levels of a solid-state light sources of a luminaire with programmable light distribution is provided. The method includes obtaining a file describing a desired light beam distribution, converting the desired light beam distribution into luminance levels for the solid-state light sources, and applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.
A method of setting luminance levels of a solid-state light sources of a luminaire with programmable light distribution is provided. The method includes obtaining a file describing a desired light beam distribution, converting the desired light beam distribution into luminance levels for the solid-state light sources, and applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.
A method for controlling a chromaticity of total light provided by a lighting system includes detecting the total light by a sensor system, determining a component of the total light that is attributable to uncontrolled light, and selecting a calibration for a sensor based on the uncontrolled light, and using the calibration to adjust the output of the sensor system. The calibration tables may be based on spectral responsivity of the sensors in the sensor system and calibration functions rather than physical light sources. Relative intensities of controllable light sources having different xy values are then adjusted to cause the total light provided by the lighting system to approximate a target chromaticity. A daylighting system implementing this method includes controllable light sources with different xy values. The intensities of the controllable light sources are adjusted to augment sunlight to control the chromaticity of total light provided by the daylighting system.
Techniques for determining an actual position of a portable device are disclosed. In an embodiment, a two-tier triangulation and wireless beacon-enabled luminaire detection approach is implemented. An estimated position of a device is determined using wireless (e.g., wireless beacon) triangulation based on a signal parameter of a signal received from a wireless access point. The field of view of the portable device may be used to estimate positions of luminaires proximate the portable device. The actual position of the luminaires may be determined from the estimated position by querying a database. A second triangulation may be performed using the known position of the luminaires to determine the position of the portable device with respect to the actual position of the luminaire.
G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
G06F 16/9537 - Spatial or temporal dependent retrieval, e.g. spatiotemporal queries
A method for controlling a chromaticity of total light provided by a lighting system includes detecting the total light by a sensor system, determining a component of the total light that is attributable to uncontrolled light, and selecting a calibration for a sensor based on the uncontrolled light, and using the calibration to adjust the output of the sensor system. The calibration tables may be based on spectral responsivity of the sensors in the sensor system and calibration functions rather than physical light sources. Relative intensities of controllable light sources having different xy values are then adjusted to cause the total light provided by the lighting system to approximate a target chromaticity. A daylighting system implementing this method includes controllable light sources with different xy values. The intensities of the controllable light sources are adjusted to augment sunlight to control the chromaticity of total light provided by the daylighting system.
F21S 41/663 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
B60Q 1/06 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
B60Q 1/14 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
Various implementations disclosed herein include a method for aiding disinfection of a room. The method may include collecting, by one or more sensors in a disinfection system, activity data in the room. A computing device or output device may identify one or more hot spots from the activity data, in which the one or more hot spots indicate areas in the room for cleaning, and generate a contamination map containing the one or more hot spots. The output device may output the contamination map to an output device for viewing by a user.
G16H 40/20 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
A motor vehicle lamp (100), comprising a lamp housing (110) defining an interior compartment (116) and an exterior region (102); a solid-state light source (120) disposed on a first heat sink (150) in thermal communication therewith, the first heat sink (150) being disposed within the interior compartment (116); a second heat sink (170) having an heat-transferring exterior section (178) disposed in the exterior region (102) of the lamp housing (110) and further having a heat-transferring receiver section (176) disposed at least partially within the interior compartment (116); and the first heat sink (150) being in thermal communication with the second heat sink (170) and coupled in displaceable relationship to the second heat sink (170), whereby a position of said solid-state light source (120) is adjustable relative the lamp housing (110).
F21S 41/143 - Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
F21S 41/657 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
Techniques are disclosed for measuring an amount of flicker produced by a light source. In one embodiment, a flicker measuring device includes a photo sensor to measure the amount of light produced by the light source, a dedicated processor to receive and process data from the photo sensor, a memory bus coupled to an analog-to-digital converter (ADC) and to a first memory, and a direct memory access (DMA) bus coupled to the ADC and to a second memory. In another embodiment, a flicker measuring system uses a light sensor, an associated circuit and a portable computing device (PCD), such as a smart phone, to measure an amount of flicker produced by a light source by sending an electrical signal from the light source and associated circuit via an audio output to an audio sub-system of the PCD, so that the PCD may calculate the flicker value.
H04N 5/235 - Circuitry for compensating for variation in the brightness of the object
G06F 13/28 - Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access, cycle steal
G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
35.
Light-based vehicle positioning for mobile transport systems
Techniques and architecture are disclosed for mobile transport systems configured to determine vehicle positions within an area using light-based communication signals. The system includes a plurality of luminaires located in an area and configured to transmit luminaire position data recognizable by a sensor disposed on a vehicle. The sensor receives an image of a luminaire including a light-based communication signal encoded with luminaire position data. Luminaire position data can be combined with luminaire layout information to determine a known location of the luminaire. A vehicle position relative to the known luminaire location can be determined based on mathematical relationships. Vehicle orientation relative to the area can be determined based an asymmetric fiducial pattern or multiple known luminaire locations. The system can combine a vehicle position relative to a known luminaire location with vehicle orientation relative to the area to determine a vehicle position relative to the area.
A connected lighting fixture network system has a plurality of multi-channel lighting fixtures. Each lighting fixture (device) has a plurality of services that reside within an application layer of the device. A controller is coupled to the device and configured to send query and command message to the device and to receive reply messages from the device. One service available to the device is a lighting command and control service. The device is configured to receive a query message from the controller. The controller is configured to generate a lighting control and command message, which can include a channel illumination field (CIF) and an illumination payload. The CIF indicates the channels of the device to be commanded based on the status of the channels received in the first reply message. The illumination payload indicates the intended illumination level for the corresponding channel.
A lighting device for communication with a mobile terminal, comprising: a lighting means, and an electronic operating device for operating the lighting means, a data storage unit, in which a first key is stored in a memory area reserved therefor, an encryption unit configured to read out the first key from the reserved memory area and, in accordance with a specifiable encryption operation, to convert measurement value data and/or identification data intended for transfer to the mobile terminal into a message encrypted by means of the first key, and a transmitting unit configured to transmit the encrypted message to the mobile terminal.
H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
H05B 47/19 - Controlling the light source by remote control via wireless transmission
H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
H04L 29/06 - Communication control; Communication processing characterised by a protocol
H04W 12/02 - Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
Techniques are disclosed for establishing communication between light-based communication (LCom) luminaires within a navigation array of luminaires and mobile computing devices having varying components and processes using an encoding scheme received from passing mobile computing devices. The encoding scheme is a set of rules for encoding and generating a visible-light communication (VLC) signal so that the mobile computing device may recognize VLC signals broadcast by the luminaire. In accordance with some embodiments, the disclosed techniques can be used, for example, to accommodate future computing devices that may incorporate different camera technologies and different processing algorithms to process waveforms in the VLC signals.
Various embodiments disclosed herein include a light-based communication system. The system includes a plurality of luminaires, in which each of the plurality of luminaires is configured to transmit light-based communication (LCom) signals, and a server communicatively coupled to the plurality of luminaires. The server is configured to assign an identifier to each of the plurality of luminaires, transmit the assigned identifier to each of the plurality of luminaires, in which each of the plurality of luminaires transmits the assigned identifier via LCom signals, rotate, in response to receiving a trigger signal, the assigned identifier for each of the plurality of luminaires, and transmit the rotated identifier to each of the plurality of luminaires, in which each of the plurality of luminaires transmits the rotated identifier via LCom signals.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
Systems, methods, and software for determining whether or not a monitored space is occupied by one or more humans and/or animals. In some embodiments, one or more radio-frequency (RF) receivers monitor(s) one or more RF frequencies for changes in received signal strength that may be due to changes in occupancy of the space being monitored. The received signal strength is analyzed using nonparametric online change-point detection analysis to determine change-points in the received signal(s). One or more statistical measures of the received signal(s), such as mean and variance, are used in conjunction with the change-point detection to determine a probability that the occupancy of the monitored space has changed. In some embodiments, additional sensors and/or machine learning can be used to enhance the performance of the disclosed occupancy-detection methodologies.
G01S 13/04 - Systems determining presence of a target
G08B 13/24 - Electrical actuation by interference with electromagnetic field distribution
G08B 25/08 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
G01S 13/56 - Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
A projection headlamp (12) has a reflector (28) reflecting light emitted from a light engine (20); a projector lens (30) projecting reflected light from the reflector (28); and a shutter (22) disposed between light engine (20) and projector lens (30), the shutter (22) having an upper edge (44) defining a cut-off to generate a low beam pattern by obscuring a portion of the projector lens (30) from the reflected light and to selectively emit the reflected light through the projector lens (30) in a low-beam light distribution pattern. The shutter (22) further includes a partially light-transmissive shutter bump (56) extending above the upper edge (44) which attenuates light emitted from the projector lens (30) in a predefined area of the low-beam pattern. Light intensity at the 0.86D, 3.5L NHTSA test point (112) is attenuated to below maximum photometric intensity (12,000 candela), avoiding glare.
F21S 41/43 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
Techniques are disclosed for detecting changes in occupancy as well as the number of occupants within an area. Detection of one or more occupants entering or leaving the area may be accomplished using a sensor having a quantity of pixels. The pixels may be configured to receive thermal energy emitted from one or more objects present in the area, including from one or more occupants. In response to receiving the emitted thermal energy, the sensor may be configured to create thermal images of the area. These thermal images may include a plurality of thermal intensity values associated with one or more pixels of the sensor. Two or more thermal images can be compared to identify a change in thermal intensity values. A change in the occupancy of the area may be determined by based on the identified change in thermal intensity values.
Methods and systems are described for sampling an LCom message and accurately decoding the entire LCom message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. In one embodiment, a curvature method is disclosed to determine LCom signal bit values from a curvature value of a running average calculation of light sensor data. In another embodiment, a signal reconstruction method is disclosed to determine LCom signal bit values from a comparison of modeled data buffers to light sensor data.
A laser-activated remote phosphor (LARP) target with a first layer having a first index of refraction and a phosphor dispersed within the first layer. A second layer which has a second index of refraction different from the first index of refraction and adjoins the first layer at an interface. The first index of refraction is higher than the second index of refraction such that the interface is configured to at least partially reflect light emitted from the phosphor.
G02B 27/14 - Beam splitting or combining systems operating by reflection only
F21V 29/502 - Cooling arrangements characterised by the adaptation for cooling of specific components
F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
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
Techniques are disclosed for locating an occupant within an area. The system includes a first sensor including a first plurality of pixels for receiving a thermal energy input from the occupant within a first field of view (FOV) and a second sensor including a second plurality of pixels for receiving the input within a second FOV. A first distance from the occupant to the first sensor is determined based on the input received by at least one pixel of the first plurality of pixels and a first sensor location from an origin. A second distance from the occupant to the second sensor is also determined based on the input received by at least one pixel of the second plurality of pixels and a second sensor location relative to the origin. A coordinate position for the occupant relative to the origin is determined based on the determined first and second distances.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
G01J 1/02 - Photometry, e.g. photographic exposure meter - Details
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
46.
Dynamic color rendering methods and systems providing just-noticeable color accentuation and quasi-animation effects
Lighting methods and systems to enhance the browsing behaviors of shoppers in a manner intended to be primarily subconscious include illumination of a targeted area, such as a typical retail display, with a tunable spectrum lamp that slowly cycles through different illumination spectra such that color rendering of illuminated target is deliberately varied for subtle arousal of the visual senses. The illumination spectra, and the rates at which spectral conditions are changed, are both chosen as such that multi-colored objects in the targeted area change in appearance in a barely noticeable way, such that shoppers may find their visual attention redirected, seemingly at random, to a wider variety of products on display. Color spectrum changes also may be controlled in coordination with predefined packaging colors to create quasi-animation effects.
System and method for determining vehicle position based upon light-based communication using signal-to-noise ratio or received signal strength indicator
A system and method for determining vehicle position uses light based communication (LBC) signals and a received signal strength indicator (RSSI) to determine the vehicle position. Each vehicle includes a LBC system having an array of transmitting light emitting diodes (LEDs) and an array of receiver photodiodes for transmitting and receiving pulsed light binary messages. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes. The controller includes a vehicle communication module that may be executed by a processor to determine the distance. The processor models a first distance between a first transmitting LBC system and a first receiving LBC system, then models a second distance between a second transmitting LBC system and the first receiving LBC system, and then determines the distance between the first vehicle and the second vehicle using trilateration of the first distance and the second distance.
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
H04B 10/07 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
A system and method for determining vehicle position uses light based communication (LBC) signals and a time-of-flight (TOF) pulse. Each vehicle includes a LBC system having light emitting diodes (LEDs) and receiver photodiodes capable of sending and receiving pulsed light binary messages. The LBC system may also include a TOF transceiver for sending and receiving TOF pulses, or the transmitter and receiver diodes may be used to send and receive TOF pulses. Each LBC system has a controller coupled to the transmitter diodes and receiver diodes (and the TOF transceiver when present). The controller includes a processor configured to determine the distance between vehicles. Optical characteristics are used to discern relative angle, a header is used to determine relative orientation, and the time-of-flight is used to determine distance, which together may be used by the processor to determine the relative location between transmitting vehicle and the receiving vehicle.
H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
H04B 10/69 - Electrical arrangements in the receiver
G01S 17/08 - Systems determining position data of a target for measuring distance only
G01S 17/87 - Combinations of systems using electromagnetic waves other than radio waves
G01S 17/93 - Lidar systems, specially adapted for specific applications for anti-collision purposes
G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
G08C 23/04 - Non-electric signal transmission systems, e.g. optical systems using light waves, e.g. infrared
A dual mode constant output current LED driver is capable of operating with a very wide range of input direct current (DC) voltage. This provides an effective topology for a wide range of constant output current LED drivers, and allows for changing the number of connected LEDs without negatively impacting the output current. The LED driver includes a converter and a mode selection circuit that control the modes of the circuit based on the voltage. The converter and mode selection circuit operate in a buck-boost mode when the output voltage of the LED driver is less than the DC input voltage plus a first threshold amount, and in a boost mode when the output voltage of the LED driver is greater than the DC input voltage plus a second threshold amount.
Lamp module cooling system 10 contains vehicle solid-state light source 12 coupled to an extruded first heat sink 2 and an extruded second heat sink 20 in thermal communication with one another and with fluid flow directed from fan air outlet 42 of fan 40 over respective heat dissipation first and second ribs 8, 28 to direct warmed air through existing apertures 115 in headlamp bezel 110 aligned with headlamp optics 130 to defog or de-ice headlamp cover 100. Housing cover 30 and cover 32 define air flow path 50, 52, 54 improving warm air guidance and efficient spatial packaging of lightweight lamp module cooling system 10.
F21S 45/60 - Heating of lighting devices, e.g. for demisting
F21S 41/148 - Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
F21S 41/50 - Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
Systems, methods, and computer program products for remote configuration of one or more power supplies, particularly lighting power supplies, are disclosed. A configuration signal that includes a setting for a parameter is generated and then transmitted to a power supply. The power supply decodes the configuration signal and, if one or more certain conditions are met, configures the power supply according to information provided in the configuration signal.
Systems and methods of adjusting a correlated color temperature (CCT) of a color-tunable light source based on one or more luminosity (lux) sensors, and without a CCT sensor, comprise receiving, at a controller, one or more signals from one or more lux sensors, the one or more signals representative of a luminous flux of natural light; determining, with the controller, a CCT of the natural light based on, at least in part, the luminous flux of the natural light; and transmitting an output signal from the controller based, at least in part, on the determined CCT of the natural light, the output signal configured to control the CCT of the color-tunable light source.
A lamp (10) is formed of a lamp capsule (1) sealed with a press seal (2) penetrated by electrical lead-ins (12), the lamp (1) being received in an insulating base (16) that has external electrical pins (18). Power leads (20) interconnect respective capsule lead-ins (12) and base pins (18). Power leads (20) are formed of stranded wire having a plurality of intertwined strands.
H01K 1/46 - Means forming part of the lamp for the purpose of providing electrical connection to, or support for, the lamp supported by a separate part, e.g. base, cap
Techniques are disclosed herein for a lighting interface system configured to adjust tunable lighting characteristics output by one or more lighting devices based on a plurality of simple, intuitive touch-gestures without necessarily providing visual indicators via a display screen or other feedback elements. The lighting interface system is implemented as a relatively simple touchpad device that is wall-mounted or portable depending on a desired configuration. The lighting interface system is configured to capture user-gestures via the touchpad device and translate the same into target lighting characteristics and an adjustment value to adjust each of the target lighting characteristics thereby. User gestures are adjustably mapped to lighting characteristics including, for example, intensity, color temperature, hue and color saturation. The lighting interface system is also configured to recognize navigation gestures, which allow a user to target one or more specific lighting devices to make adjustments thereto.
Techniques are disclosed for enhancing indoor navigation using light-based communication (LCom). In some embodiments, an LCom-enabled luminaire configured as described herein may include or have access to a sensor configured to detect a hazardous condition. In response to detection of a hazard, the LCom-enabled luminaire may adjust its light output, transmit an LCom signal, or both, in accordance with some embodiments. A given LCom signal may include data that may be utilized by a recipient computing device, for example, in providing emergency evacuation routing or other indoor navigation with hazard avoidance, emergency assistance, or both. In a network of such luminaires, data distribution via inter-luminaire communication may be provided, in accordance with some embodiments, via an optical interface or other wired or wireless communication means. In some cases, the network may include a luminaire that is not LCom-enabled yet still configured for inter-luminaire communication.
G08B 3/00 - Audible signalling systems; Audible personal calling systems
G08B 7/06 - Signalling systems according to more than one of groups ; Personal calling systems according to more than one of groups using electric transmission
G08B 19/00 - Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
G01C 21/20 - Instruments for performing navigational calculations
Techniques are disclosed for enhancing indoor navigation using light-based communication (LCom). In some embodiments, an LCom-enabled luminaire configured as described herein may include access to a sensor configured to detect a given hazardous condition. In response to detection of a hazard, the LCom-enabled luminaire may adjust its light output, transmit an LCom signal, or both, in accordance with some embodiments. A given LCom signal may include data that may be utilized by a recipient computing device, for example, in providing emergency evacuation routing or other indoor navigation with hazard avoidance, emergency assistance, or both. In a network of such luminaires, data distribution via inter-luminaire communication may be provided, in accordance with some embodiments, via an optical interface or other wired or wireless communication means. In some cases, the network may include a luminaire that is not LCom-enabled yet still configured for inter-luminaire communication.
F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for
G08B 25/00 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
H04B 10/80 - Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water
62.
Techniques for raster line alignment in light-based communication
Techniques are disclosed for providing proper raster line alignment of a camera or other light-sensing device of a receiver device relative to a transmitting light-based communication (LCom)-enabled luminaire to establish reliable LCom there between. In accordance with some embodiments, proper alignment can be provided automatically (e.g., by the receiver device and/or other suitable controller). In accordance with some embodiments, proper alignment can be provided by the user. In some instances in which a user is to be involved in the alignment process, the receiver device may be configured, for example, to instruct or otherwise guide the user in the process of properly aligning the receiver device relative to a given transmitting LCom-enabled luminaire.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
G06K 9/34 - Segmentation of touching or overlapping patterns in the image field
G06K 9/62 - Methods or arrangements for recognition using electronic means
H04B 10/079 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
H04B 10/516 - Transmitters - Details of coding or modulation
G01C 21/20 - Instruments for performing navigational calculations
G01S 1/70 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
G01S 11/12 - Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
Techniques are disclosed herein for a lighting interface system configured to adjust tunable lighting characteristics output by one or more lighting devices based on a plurality of simple, intuitive touch-gestures without necessarily providing visual indicators via a display screen or other feedback elements. The lighting interface system is implemented as a relatively simple touchpad device that is wall-mounted or portable depending on a desired configuration. The lighting interface system is configured to capture user-gestures via the touchpad device and translate the same into target lighting characteristics and an adjustment value to adjust each of the target lighting characteristics thereby. User gestures is adjustably mapped to lighting characteristics including, for example, intensity, color temperature, hue and color saturation. The lighting interface system is also configured to recognize navigation gestures, which may allow a user to target one or more specific lighting devices to make adjustments thereto.
Techniques are disclosed for position-based actions using light-based communication (LCom). LCom signals can be used to encode or otherwise provide data which in turn can be used to help determine the position of a device receiving those LCom signals. Therefore, LCom can be used to facilitate various actions based on, for example, the position of an LCom receiver determined using data received via the LCom signals. There are numerous use cases for position-based actions using LCom, such as security applications, check-in applications, payments based on location, permissions, and access to information that can all be tied to a location. Actions may include temporarily disabling or enabling the LCom receiver hardware or software (such as disabling device cameras in high security areas), providing another security layer as a result of knowing the device position, and using the LCom receiver position as a part of a larger process.
Techniques are disclosed for projecting visible cues to assist with light-based communication (LCom), the visible cues referred to herein as visual hotspots. The visual hotspots can be projected, for example, using a luminaire that may be LCom-enabled. The visual hotspots may be projected onto the floor of an area including an LCom system. The visual hotspots can be used for numerous benefits, including alerting a potential user that LCom is available, educating the user about LCom technology, and assisting the user in using the LCom signals available in the area. The visual hotspots may include images, symbols, cues, characters (e.g., letters, words, numbers, etc.), indicators, logos, or any other suitable content. In some cases, the visual hotspots may be interactive, such that a user can scan the hotspot to cause an action to occur (e.g., launch an application or website).
Techniques are disclosed for augmenting global positioning system (GPS)-based navigation via light-based communication (LCom). In accordance with some embodiments, a light-sensing device, such as a camera or an ambient light sensor configured as described herein, may be used to detect an LCom signal transmitted by a local LCom-enabled solid-state luminaire. The LCom signal may include data about the location of the transmitting luminaire, and in some cases that location data may be used, for example, in computing the amount of time that it would take to navigate indoors to the luminaire's location. In some instances, GPS data also may be considered to calculate the total trip duration for an entire trip, including time spent indoors and outdoors. In some other cases, the location data and, if available, GPS data may be used, for example, in computing an automotive navigation route.
H04W 24/00 - Supervisory, monitoring or testing arrangements
H04W 4/02 - Services making use of location information
G01C 21/20 - Instruments for performing navigational calculations
G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
69.
Identifying and controlling light-based communication (LCom)-enabled luminaires
Techniques are disclosed for identifying and controlling light-based communication (LCom)-enabled luminaires. In some cases, the techniques include a luminaire communicating its ID to a computing device via one or more LCom signals. In some cases, a user may be able to aim a rear-facing camera of a smartphone at the luminaire desired to be controlled. Once the luminaire is in the field of view of the camera, the ID of the luminaire can be determined using one or more LCom signals received from the luminaire. The ID of the luminaire may be, for example, its internet protocol (IP) address or media access control (MAC) address or another unique identifier. Once a luminaire has been identified, commands can be issued to the luminaire to adjust one or more characteristics of the light output, such as changing the dimming percentage of the light output.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
A lamp optic (100) for a lamp includes a proximal end (104), a distal end (106) and a longitudinal axis (L). The proximal end (104) has a proximal inner side wall (112) linearly extending toward the distal end (106) and intersecting a proximal flat portion (114). The distal end (106) has a distal inner side wall (120) linearly extending toward the proximal end (104) and intersecting a distal flat portion (122). The distal flat portion length (LD) is at least 25 percent of the proximal flat portion length (LP). A lateral side (108) extends from the proximal end (104) to the distal end (106). The lateral side (108) has a first skirt region (124) and a second skirt region (126). The first skirt region (124) and the second skirt region (126) extend linearly and successively from the proximal end (104) to the distal end (106).
Light-based communication (LCom) techniques are disclosed for adaptively adjusting the baud rate of a luminaire to optimize the LCom signal transmitted for an intended receiver device. The adaptive baud rate can be adjusted by a process that includes, for example: determining decoding parameters of the receiver device, the device including a camera for receiving LCom signals, and a display. The process further includes calculating a baud rate suitable for the receiver device based on the decoding parameters, and causing the baud rate to be set at the luminaire. The process may further include at least one of: verifying the baud rate at the receiver device; adjusting the decoding parameters of the receiver device if baud rate cannot be adjusted to meet a current configuration of decoding parameters; and prompting a user to rotate receiver device to improve orientation of the luminaire with respect to a raster direction of the camera.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
H04B 10/079 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
H04W 4/02 - Services making use of location information
H04W 28/02 - Traffic management, e.g. flow control or congestion control
In embodiments of the present invention, a method and system is provided for commissioning improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more LED light bars, integrated sensors, onboard intelligence to send and receive signals and control the LED light bars, and network connectivity to other fixtures.
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
F21V 21/00 - Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
F21V 29/56 - Cooling arrangements using liquid coolants
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21S 9/02 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 9/04 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
b), preferably shaped as a wedge of a sphere, to reflect low-beam light, emitted downwardly from generally spherical distribution light source (7), towards concave reflector (3).
An example lamp optic comprises a light guide (100) to receive light from a light source (108) and generate a light beam via internal reflection. The light guide includes a proximal end (104) to receive the light and a distal end (106) to emit the light beam. An optical axis (OA) extends from the proximal end to the distal end, and a transverse axis (TA) extends perpendicular to the optical axis. A surface of the distal end has a stepped portion (110) including a central surface (112) substantially parallel to the transverse axis and centered on the optical axis, and linear steps (114) extending in opposing directions from the central surface parallel to the transverse axis and along the optical access towards the distal end. Each linear step includes an optical face (116) extending perpendicular to the optical axis and a transverse face (118) extending perpendicular to the transverse axis.
An ambient light sensor measures an ambient light level at one point in an illuminated environment, such as a warehouse, office, shop, cold-storage facility, or industrial facility, and provides an indication of the measured ambient light level to a processor. The processor maps the measured ambient light level to an estimated ambient light level at a different point in the illuminated environment from the measured ambient light level (e.g., a “task height” about three feet from a warehouse floor). The processor may determine the difference between the estimated ambient light level and a desired light level at the task height, and may change the artificial illumination provided by a light fixture to make the actual ambient light level at task height match the desired light level at the task height.
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
Methods and systems are described for sampling an LCOM message signal at a rate less than the Nyquist rate (i.e., an “alias frequency”) and accurately reconstructing the entire LCOM message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. The described methods and system take advantage of the repetition of LCOM signals, sampling an LCOM signal at a frequency less than the Nyquist frequency over at least two repetitions of a signal waveform, thereby collecting sufficient samples to accurately reconstruct the signal. The samples of each successive signal waveform repetition are offset from one another so that different points on the waveform are sampled, thus facilitating reconstruction of the signal.
H04B 10/00 - Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
H04B 10/079 - Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
H04W 4/02 - Services making use of location information
G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
80.
Methods, apparatus, and systems for providing occupancy-based variable lighting
A presence or an absence of an occupant is detected, and an occupancy sensor signal is generated representative of an active state in which the presence of the occupant is detected, and an inactive state in which the absence of the occupant is detected. An ambient light sensor detects the ambient light level and generates an ambient light sensor signal representative of the ambient light level. Dimmable illumination is generated at a first dimming level, based on the ambient light level, corresponding to the active state and a second dimming level corresponding to the inactive state. A transition delay time between an onset of the inactive state and a transition between the first dimming level and the second dimming level may be controlled. The first dimming level, the second dimming level, and/or the transition delay time may be variably set or controlled locally or via a remote device.
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21V 29/60 - Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
F21S 8/04 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 9/04 - Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
F21V 29/00 - Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
F21S 8/08 - Lighting devices intended for fixed installation with a standard
F21V 19/00 - Fastening of light sources or lamp holders
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
Disclosed herein are wavelength converters and methods for making the same. The wavelength converters include a single layer of a polymeric matrix material, and one or more types of wavelength converting particles. In some embodiments the wavelength converters include first and second types of wavelength converting particles that are distributed in a desired manner within the single layer of polymeric matrix material. Methods of forming such wavelength converters and lighting devices including such wavelength converters are also disclosed.
A method of manufacturing a lamp comprising forming a first sheet segment (48) into a first shell portion (110) after forming a first electrically conductive trace (70) on the first sheet segment (48) and after placing a first plurality of LEDs (90) on the first sheet segment (48); forming a second sheet segment (50) into a second shell portion (120) after forming a second electrically conductive trace (80) on the second plastic segment (50) and after placing a second plurality of LEDs (90) on the second sheet segment (50); and joining the first shell portion (110) and the second shell portion (120) into a bulb enclosure (40) defining an interior region (42) therein. The first and second sheet segments (48, 50) are preferably thermoformed and may be connected by a web (60).
There is herein described a ceramic wavelength converter having a high reflectivity reflector. The ceramic wavelength converter is capable of converting a primary light into a secondary light and the reflector comprises a reflective metal layer and a dielectric buffer layer between the ceramic wavelength converter and the reflective metal layer. The buffer layer is non-absorbing with respect to the secondary light and has an index of refraction that is less than an index of refraction of the ceramic wavelength converter. Preferably the reflectivity of the reflector is at least 80%, more preferably at least 85% and even more preferably at least 95% with respect to the secondary light emitted by the converter.
Techniques are provided for bi-directional communication between a power supply and one or more light engines (and/or other lighting system components) via the existing power lines so that no additional communication wires are needed. In particular, the power supply can transmit information by modulating its output (voltage or current) and the light engine (or other lighting componentry, such as a sensor) can communicate back by modulating how much power it draws from the power supply. Any suitable type of modulation scheme can be used, and a master-slave arrangement can be used to control the bi-directional communication if so desired, so as to avoid multiple devices communicating over the power line communication channel at the same time. Other embodiments allow a multiple simultaneous communications over the power line communication channel.
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
H05B 41/28 - Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
H04B 3/54 - Systems for transmission via power distribution lines
86.
Methods, systems, and apparatus for providing variable illumination
Digital Control Ready (DCR) is a two-way open standard for controlling and managing next-generation fixtures. A DCR-enabled lighting fixture responds to digital control signals from a separate digital light agent (DLA) instead of analog dimming signals, eliminating the need for digital-to-analog signal conditioning, fixture-to-fixture variations in response, and calibration specific to each fixture. In addition, a DCR-enabled lighting fixture may also report its power consumption, measured light output, measured color temperature, temperature, and/or other operating parameters to the DLA via the same bidirectional data link that carries the digital control signals to the fixture. The DLA processes these signals in a feedback loop to implement more precise lighting control. The DCR-enabled lighting fixture also transforms AC power to DC power and supplies (and measures) DC power to the DLA via a DCR interface. These features enable intelligent, networked DCR lighting systems operate with lower power (energy) consumption, greater flexibility, and simpler installation than other intelligent lighting networks.
A method of providing accent ornamental illumination to a lamp of a motor vehicle comprising providing an accent lamp comprising a housing and a light-emitting device disposed within the housing; mounting the housing to an exterior surface of the lens cover of the vehicle lamp; and arranging the light-emitting device such that, when the housing is mounted to the exterior surface of the lens cover of the lamp, light emitted from the light-emitting device passes through the lens cover from outside the lens cover towards a lamp reflector of the vehicle lamp and illuminates the reflector. A motor vehicle lamp combination comprising, in combination, a motor vehicle lamp and an accent lamp also provided wherein, when the accent lamp is mounted on a lens cover of the motor vehicle lamp, light emitted from the light-emitting device is directed towards the reflector.
B60Q 1/00 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
B60Q 1/26 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
F21Y 101/02 - Miniature, e.g. light emitting diodes (LED)
88.
Gesture-based control techniques for lighting systems
Techniques and architecture are disclosed for gesture-based control techniques for lighting systems. In some cases, the lighting system may include a camera and/or other suitable componentry to interpret gestures made by a user for controlling light output. In some such cases, the gesture performed and/or the location of the gesture may determine how the light output is controlled. In some cases, the gestures may be performed by moving a mobile computing device, such as a smartphone, tablet, or dedicated light controller device. In some such cases, sensors included in or otherwise operatively coupled to the computing device (gravitational sensors, accelerometers, gyroscopic sensors, etc.) may be used to detect the movement of the device and the related gestures. The gestures may be used to navigate a user interface that allows a user to control light output by adjusting different attributes of the light output, such as light intensity and color.
A heat sink includes an extruded component, a cast component, and an interface layer. The extruded component includes a first aluminum material and is configured to be coupled to a solid state light source. The cast component includes a second aluminum material overmolded onto a portion of the extruded component to form the interface layer. The interface layer is formed of at least one of the first and the second aluminum materials and abuts against and couples the extruded component to the cast component.
F21V 29/76 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F28F 3/02 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups
H01L 23/373 - Cooling facilitated by selection of materials for the device
An automotive LED lamp having a light guide (28) having a single central bore (29) defined by a cylindrical wall (26) and an outer surface (31) defined by a plurality of outer wall segments (35) bounding, as seen in cross-section transverse the optical axis (18) a regular polygonal shape having more than four sides. The outer polygonal shape has between five sides and sixteen sides, preferably a ten-sided decagon.
Techniques are disclosed for detecting stationary presence using IR sensor array. A number of IR images may be captured. Of the IR images captured by the IR sensor array certain pixels can be identified as causing false triggers. These pixels can be identified and filtered to be ignored. The non-filtered pixels of IR images may be averaged over various time intervals to calculate a number of average IR frames. The difference between these average IR frames provides a delta frame. A mask frame may be calculated as the summation of delta frames over time, and the value of the mask frame may be used to detect a stationary human presence even when no delta value is calculated. Alternatively, the mask frame may be used to calculate a background frame that represents the IR signature of stationary or cyclical objects within the scanned area that are not intended to trigger the presence detection system. A stationary presence may be determined by subtracting the background frame from a current average IR frame.
G01V 8/10 - Detecting, e.g. by using light barriers
G08B 13/194 - Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
G08B 13/196 - Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
Solid-state lamps having an electronically adjustable light beam distribution are disclosed. In accordance with some embodiments, a lamp configured as described herein includes a plurality of solid-state emitters (addressable individually and/or in groupings) mounted over a non-planar interior surface of the lamp. The interior mounting surface can be concave or convex, as desired, and may be of hemispherical or hyper-hemispherical geometry, among others, in accordance with some example embodiments. In some embodiments, the heat sink of the lamp may be configured to provide the interior mounting surface, whereas in some other embodiments, a separate mounting interface, such as a parabolic aluminized reflector (PAR), a bulged reflector (BR), or a multi-faceted reflector (MR), may be included to such end. Also, the lamp may include one or more focusing optics for modifying its output. In some cases, a lamp provided as described herein may be configured for retrofitting existing lighting structures.
Solid-state lamps having an electronically adjustable light beam distribution are disclosed. In accordance with some embodiments, a lamp configured as described herein includes a plurality of solid-state emitters (addressable individually and/or in groupings) mounted over a non-planar interior surface of the lamp. The interior mounting surface can be concave or convex, as desired, and may be of hemispherical or hyper-hemispherical geometry, among others, in accordance with some example embodiments. In some embodiments, the heat sink of the lamp may be configured to provide the interior mounting surface, whereas in some other embodiments, a separate mounting interface, such as a parabolic aluminized reflector (PAR), a bulged reflector (BR), or a multi-faceted reflector (MR), may be included to such end. Also, the lamp may include one or more focusing optics for modifying its output. In some cases, a lamp provided as described herein may be configured for retrofitting existing lighting structures.
F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
F21K 9/233 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
F21W 131/406 - Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
F21Y 107/10 - Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
F21Y 107/20 - Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
Retainer clip (100) attachable to automotive headlamp (10) for inhibiting second electrical connector (72) of wiring harness (44) from unintentionally separating from mating first connector (52) on the PCB (60) of the lamp. Clip (100) has central first beam (110) to contact lamp (10), lamp-retaining support base (160) depending from one end of first beam (110) to engage lamp (10), and second connector-blocking region (140) extending from an opposite end of first beam (110) that, upon assembly proximate second connector (72), inhibits separation of the connectors (52, 72). Clip (100) is stamped from sheet metal. Support base (165) has engaging arms (164, 166) joined by bight (162) either to be clipped over one fin (22) of heat sink (20) or to be squeezed between two neighboring fins (22). Engaging arms (164, 166) have protruding barbs (165) to resist separation of support base (165) from heat sink (20).
Disclosed herein are wavelength converters and methods for making the same. The wavelength converters include a single layer of a polymeric matrix material, and one or more types of wavelength converting particles. In some embodiments the wavelength converters include first and second types of wavelength converting particles that are distributed in a desired manner within the single layer of polymeric matrix material. Methods of forming such wavelength converters and lighting devices including such wavelength converters are also disclosed.
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