In one aspect, lighting fixtures are described herein having the ability to provide multiple lighting distributions from a single architecture. Such lighting fixtures can be adjustable, thereby enabling the end user to select the desired lighting distribution. A lighting fixture, in some embodiments, comprises a support extending along an axis from a first end to a second end, and a lighting assembly coupled to the second end of the support. The lighting assembly comprises a light emitting face comprising a fixed optical assembly and a rotatable optical assembly, wherein the light emitting face faces the support, and lighting distribution of the lighting assembly varies according to rotational position of the rotatable optical assembly.
F21V 19/02 - Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
F21S 6/00 - Lighting devices intended to be free-standing
F21V 17/00 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
A light strip that includes a housing with an elongated shape. A tray is attached to the housing and is positioned in the housing. An LED assembly is mounted to the tray and includes LED elements that emit light outward away from the tray. An elongated lens with a central section is configured to extend over the LED assembly. Inner end caps are positioned at ends of the lens with the inner ends caps being light-transmissive. Outer end caps are positioned at ends of the housing outward from the inner end caps with the outer end caps being opaque.
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 5/04 - Refractors for light sources of lens shape
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
Systems and methods for a high output, high color quality light are disclosed. In some embodiments, such a light may include a light fixture including one or more LEDs configured to output a cumulative light output; wherein the cumulative light output comprises an intensity of greater than or equal to 10,000 lumens; and wherein the cumulative light output comprises a CRI of at least 90.
F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
F21V 29/83 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
H05B 45/46 - Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
H05B 45/24 - Controlling the colour of the light using electrical feedback from LEDs or from LED modules
F21K 9/00 - Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
F21S 8/08 - Lighting devices intended for fixed installation with a standard
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
A modular and easily serviced area light is provided. Area lights described herein use a modular fixture design to facilitate in-field serviceability and upgradeability of power, lighting, sensor, and other components. In particular, light fixtures include a housing with an integrated hinge to provide access to sub-assemblies and electrical components without removal of doors, access panels, or other large fixture parts. In this manner, various components can be easily serviced or upgraded, including power circuitry (e.g., light-emitting diode (LED) drivers and/or power converters) and a light engine (e.g., to provide a larger LED array). At least some components may be accessed for service without need for specialty or any tools. In addition, sub-components, such as a power outlet (e.g., a NEMA-rated outdoor receptacle), a sensor, etc., can be installed in-field without needing to replace main fixture components.
A lighting fixture with reduced glare is provided. Lighting fixtures described herein use a lens assembly to redirect light away from a housing in order to reduce a unified glaring ratio (UGR) (e.g., when viewed crosswise or endwise). The lens assembly may further provide diffusive properties which result in a more pleasing and soft light over traditional lighting fixtures. In aspects described herein, the UGR of troffer-style lighting fixtures can be improved (e.g., reduced) through lens assemblies having one or more light redirection features configured to particularly redirect light emitted at high v-angles (e.g., light emitted sideways relative to the housing at v-angles greater than 70 degrees). For example, the lens assembly may include an inner prismatic surface of a lens, an inner lens, a louver assembly (e.g., over or under a lens), or a reflector to achieve this light redirection.
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
Detection and identification of auditory events in distributed lighting networks is provided. Lighting fixtures or other devices in a distributed lighting network can incorporate an audio sensor (e.g., a microphone) through which auditory events (e.g., air leaks in compressed air systems, high noise events, shots fired, clapping, voice commands, etc.) are detected and measured. Through machine learning (e.g., a convolutional neural network), a type of auditory event can be identified, and action can be taken based on the type of the auditory event, such as to provide notification, alert nearby users, log events, provide sound cancelation, and so on. In some examples, the auditory event can be localized using multiple audio sensors. In some examples, a learning algorithm can fuse information from multiple sensor inputs, such as temperature sensors, cameras, occupancy sensors, light sensors, and so on.
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
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
The present invention addresses the problem of providing illumination in a manner that is energy efficient and intelligent. In particular, the present invention uses distributed processing across a network of illuminators to control the illumination for a given environment. The network controls the illumination level and pattern in response to light, sound, and motion. The network may also be trained according to uploaded software behavior modules, and subsets of the network may be organized into groups for illumination control and maintenance reporting.
H05B 37/00 - Circuit arrangements for electric light sources in general
H05B 47/175 - Controlling the light source by remote control
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 47/155 - Coordinated control of two or more light sources
Environmental control system diagnostics and optimizations using intelligent lighting networks are provided. One or more intelligent lighting modules (ILMs) can be deployed in intelligent lighting fixtures, intelligent lighting zone controllers, and other intelligent lighting network devices to collect ambient environmental data (e.g., temperature, pressure, and humidity) in addition to occupancy and ambient light sensing used for lighting control. In this manner, embodiments of the present disclosure address diagnostics and improve performance of environmental control systems (e.g., heating ventilation and air conditioning (HVAC) systems) by offering a secondary set of sensors for HVAC systems at a lower cost than traditional approaches. In particular, the ILMs or other processing circuitry in communication with the ILMs analyze the collected ambient environmental data to diagnose the health and function of the environmental control system, and communicate the diagnoses to users and/or the HVAC system.
A distributed, parallel, image capture and processing architecture provides significant advantages over prior art systems. A very large array of computational circuits—in some embodiments, matching the size of the pixel array—is distributed around, within, or beneath the pixel array of an image sensor. Each computational circuit is dedicated to, and in some embodiments is physically proximal to, one, two, or more associated pixels. Each computational circuit is operative to perform computations on one, two, or more pixel values generated by its associated pixels. The computational circuits all perform the same operation(s), in parallel. In this manner, a very large number of pixel-level operations are performed in parallel, physically and electrically near the pixels. This obviates the need to transfer very large amounts of pixel data from a pixel array to a CPU/memory, for at least many pixel-level image processing operations, thus alleviating the significant high-speed performance constraints placed on modern image sensors.
H04N 5/3745 - Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
H04N 5/372 - Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS
H04N 5/374 - Addressed sensors, e.g. MOS or CMOS sensors
G05B 15/02 - Systems controlled by a computer electric
H04N 5/378 - Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
Luminaires are described herein comprising a single fixture operable for providing multiple lighting distributions. The multiple lighting distributions can be employed for independently lighting spatially unrelated areas and/or objects in an environment. In some embodiments, a luminaire comprises a lighting assembly including a primary body providing a primary lighting distribution, and at least one secondary body extending from the primary body and providing a secondary lighting distribution. The secondary body is adjustable to at least partially orient the secondary lighting distribution outside of the primary lighting distribution.
F21V 17/02 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
Luminaires are described herein comprising a single fixture operable for providing multiple lighting distributions. The multiple lighting distributions can be employed for independently lighting spatially unrelated areas and/or objects in an environment. In some embodiments, a luminaire comprises a lighting assembly including a primary body providing a primary lighting distribution, and at least one secondary body extending from the primary body and providing a secondary lighting distribution. The secondary body is adjustable to at least partially orient the secondary lighting distribution outside of the primary lighting distribution.
F21V 17/02 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
F21W 131/103 - Outdoor lighting of streets or roads
Backlighting panels for LCD displays are described herein which, in some embodiments, enhance contrast ratio, spatial resolution and/or chromaticity differentiation in images output by the LCD displays. In one aspect, an electronic display device comprises a LCD panel comprising pixels, and a backlighting panel comprising an array of solid state lighting devices of differing color. A color management unit is configured to generate color management signals for controlling chromaticity and/or luminance output of the solid state lighting devices, wherein a ratio of the solid state lighting devices to the pixels of the LCD panel is greater than 1.
A fixture configuration module comprises a connector configured to be removably coupled with a light fixture. The fixture configuration module also comprises fixture control circuitry communicatively coupled to the connector and configured to control the light fixture to produce light in accordance with a range of a lighting parameter. The range includes at least a subset of values supported by the light fixture for producing light. The fixture configuration module further comprises range control circuitry communicatively coupled to the fixture control circuitry and configured to wirelessly receive the range at least while the connector is uncoupled from the light fixture, and designate the range to the fixture control circuitry while the connector is coupled to the light fixture.
H05B 45/10 - Controlling the intensity of the light
H05B 47/18 - Controlling the light source by remote control via data-bus transmission
F21V 13/04 - Combinations of only two kinds of elements the elements being reflectors and refractors
F21K 9/275 - Details of bases or housings, i.e. the parts between the light-generating element and the end capsArrangement of components within bases or housings
F21Y 113/10 - Combination of light sources of different colours
Lighting devices having optical waveguides for controlled light distribution are provided. A lighting device includes a housing, a light emitter disposed in the housing, and a waveguide at least partially disposed in an opening of the housing. The waveguide includes a light input surface defining coupling features, wherein the light emitter is disposed adjacent the light input surface and emits light into the coupling features. The waveguide further includes a light transmission portion disposed between the light input surface and a light extraction portion, wherein light from the light emitter received at the light input surface propagates through the light transmission portion toward the light extraction portion. The waveguide further includes the light extraction portion, which comprises at least one light redirection feature and at least one light extraction feature that cooperate to generate a controlled light pattern exiting the lighting device.
Lighting fixtures that include fixture housings and light-emitting diode (LED) modules configured for tool-less attachment and detachment to the fixture housings are disclosed. Certain LED modules include LED emitters, corresponding electronics for operating the LED emitters, and at least one shaped protrusion. Certain LED modules include safety tethers that are configured to provide mechanical support during the tool-less attachment and detachment. Lighting fixtures include a lens and removable endcaps that secure the lens to the fixture housing. Certain lighting fixtures include a backup battery and a button provided in one of the endcaps for testing the backup battery. Certain lighting fixtures include a cut-out portion in the fixture housing corresponding to the shaped protrusion of the LED module for providing identification of replacement LED modules that may be attached to fixture housings.
F21S 8/04 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
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 9/02 - Lighting devices with a built-in power supplySystems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
A method includes the steps of obtaining a frame from an image sensor, the frame comprising a number of pixel values, detecting a change in a first subset of the pixel values, detecting a change in the second subset of the pixel values near the first subset of the pixel values, and determining an occupancy state based on a relationship between the change in the first subset of the pixel values and the second subset of the pixel values. The occupancy state may be determined to be occupied when the change in the first subset of the pixel values is in a first direction and the change in the second subset of the pixel values is in a second direction opposite the first direction.
H05B 47/125 - Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by using cameras
G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
G06T 7/254 - Analysis of motion involving subtraction of images
G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects
G06F 18/2413 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on distances to training or reference patterns
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
H05B 47/13 - Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by using passive infrared detectors
An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.
In one aspect, luminaires are described herein having sensor modules integrated therein. In one aspect, a luminaire described herein comprises a light emitting face including a LED assembly. A sensor module is integrated into the luminaire at a position at least partially overlapping the light emitting face. In another aspect, a luminaire described herein comprises a LED assembly and a driver assembly. A sensor module is integrated into the luminaire along or more convective air current pathways cooling the LED assembly or driver assembly.
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21V 29/10 - Arrangement of heat-generating components to reduce thermal damage, e.g. by distancing heat-generating components from other components to be protected
F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
An electrical measurement apparatus may include a bias voltage generator configured to generate and output a bias voltage, a bias probe coupled to the output of bias voltage generator configured to apply voltage bias to a first portion of an external circuit which may be subjected to environmental stresses such as vibration, temperature, humidity etc., a measurement probe configured to receive a second electrical signal from a second portion of the external circuit, and a control unit configured to control the bias voltage generator to generate different bias voltages, patterns, AC/DC etc., receive the second electrical signal from the measurement probe and cause the device to output a response in the second electrical signal to the time-domain discontinuity in the first electrical signal.
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
An image sensor includes an active pixel array including a number of pixels and image sensor control circuitry configured to perform a read operation only on a subset of the pixels of the active pixel array such that pixels not in the subset remain inactive. By reading out only the subset of pixels in the active pixel array and keeping the remaining pixels inactive, the temperature of the active pixel array may be reduced compared to a conventional read out process, thereby reducing thermal noise in the resulting pixel data.
G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands
H04N 25/44 - Extracting pixel data from image sensors by controlling scanning circuits, e.g. by modifying the number of pixels sampled or to be sampled by partially reading an SSIS array
A light strip that includes a housing with an elongated shape. A tray is attached to the housing and is positioned in the housing. An LED assembly is mounted to the tray and includes LED elements that emit light outward away from the tray. An elongated lens with a central section is configured to extend over the LED assembly. Inner end caps are positioned at ends of the lens with the inner ends caps being light-transmissive. Outer end caps are positioned at ends of the housing outward from the inner end caps with the outer end caps being opaque.
F21V 17/16 - 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 by deformation of parts of the lighting deviceSnap action mounting
F21S 4/00 - Lighting devices or systems using a string or strip of light sources
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
A light strip that includes a housing with an elongated shape. A tray is attached to the housing and is positioned in the housing. An LED assembly is mounted to the tray and includes LED elements that emit light outward away from the tray. An elongated lens with a central section is configured to extend over the LED assembly. Inner end caps are positioned at ends of the lens with the inner ends caps being light-transmissive. Outer end caps are positioned at ends of the housing outward from the inner end caps with the outer end caps being opaque.
F21S 4/00 - Lighting devices or systems using a string or strip of light sources
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 17/16 - 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 by deformation of parts of the lighting deviceSnap action mounting
An area lamp includes an emitter array and driver circuitry. The emitter array includes a number of solid-state light emitters. Each one of the solid-state light emitters is configured to provide light suitable for general illumination within a field of view such that light emitted from a first subset of the number of solid-state light emitters is provided to a different portion of the field of view than light emitted from a second subset of the number of solid-state light emitters. The driver circuitry is coupled to the emitter array and configured to provide drive signals to the emitter array such that the light provided from each one of the solid-state light emitters is independently controllable and a number of drive signals is less than the number of solid-state light emitters.
A lighting fixture incorporates a peripheral light emission feature, such as a peripheral waveguide and/or a peripheral reflector region. A peripheral light emission feature may at least partially surround a non-peripheral feature that may include a light-transmissive panel. At least one first light source may illuminate a peripheral light emission feature, and at least one second light source may illuminate a light transmissive panel. Control circuitry is configured to selectively adjust intensity and/or color temperature of the light sources to cause aggregate emissions of the lighting fixture (or a lighting system with multiple lighting fixtures) to dynamically change over time (e.g., with different intensities and color temperature), so as resemble a skylight or window. A viewer may thereby perceive at least portions of a space as being naturally illuminated.
F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
F21S 10/02 - Lighting devices or systems producing a varying lighting effect changing colours
A lighting fixture appears as a skylight and is referred to as a skylight fixture. First and second light engines of the fixture provide different color points, peak light intensity angles, far-field light distribution characteristics, and/or circadian stimulus values. A skylight fixture may include a sky-resembling assembly and a plurality of sun-resembling assemblies, with dedicated optical assemblies and/or light sources. A lighting fixture may include multiple waveguides that different extraction feature patterns and/or may be sequentially arranged.
F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for
F21S 19/00 - Lighting devices or systems employing combinations of electric and non-electric light sourcesReplacing or exchanging electric light sources with non-electric light sources or vice versa
F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
F21S 8/00 - Lighting devices intended for fixed installation
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21Y 113/17 - Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
A lighting fixture incorporates a peripheral light emission feature, such as a peripheral waveguide and/or a peripheral reflector region. A peripheral light emission feature may at least partially surround a non-peripheral feature that may include a light-transmissive panel. At least one first light source may illuminate a peripheral light emission feature, and at least one second light source may illuminate a light transmissive panel. Control circuitry is configured to selectively adjust intensity and/or color temperature of the light sources to cause aggregate emissions of the lighting fixture (or a lighting system with multiple lighting fixtures) to dynamically change over time (e.g., with different intensities and color temperature), so as resemble a skylight or window. A viewer may thereby perceive at least portions of a space as being naturally illuminated.
F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
F21S 10/02 - Lighting devices or systems producing a varying lighting effect changing colours
A luminaire housing (2) includes a cover (6) mounted to a base (4) at a hinge (30) that has a shaft (40) defining a pivot axis. Receptacles (56, 57) in the base (4) and the cover (6) receive the shaft (40) and first and second plates (42, 48) fix a position of the shaft (40) to and retain it on the base (4) and the cover (6). A mechanism (80) adjusts a tilt angle of the housing (2) and includes a cog wheel (90) on an axis of rotation of the housing (2). A pawl (98) moves between a first position where the pawl (98) engages the cog wheel (90) to fix the position of the housing (2) and a second position where the pawl (98) is disengaged from the cog wheel (90) to allow movement of the housing (2). An adjustment member (106) controls movement of the pawl (98).
Luminaires are described herein employing waveguides and associated architectures for dynamic alteration of illuminance distribution patterns. The waveguide includes a light extraction component. The waveguide transmits light from a light source to the light extraction component by total internal reflection (TIR). The light extraction component includes one or more reversibly moveable surfaces for altering illuminance distribution patterns of the luminaire in response to one or more forces applied to the light extraction component by a force application assembly of the luminaire.
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
F21S 6/00 - Lighting devices intended to be free-standing
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
F21Y 105/18 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annularPlanar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
F21Y 105/16 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
A Digital Addressable Lighting Interface (DALI) control hub implements DALI-based lighting control. The DALI control hub receives, from a DALI controller, a DALI control message addressed to the DALI control hub. The DALI control hub controls a plurality of DALI compliant devices collectively in accordance with the DALI control message. To control the plurality of DALI compliant devices collectively, the DALI control hub transmits, to each of a plurality of DALI compliant devices, a further DALI control message addressed to the DALI compliant device based on the DALI control message received from the DALI controller.
Lighting devices and methods utilize multiple independently controllable groups of solid state light emitters of different dominant wavelengths, with operation of the emitter groups being automatically adjusted by processor(s) to provide desired illumination. Operation of the emitter groups may be further affected by sensors and/or user input commands (e.g., sound patterns, gesture patterns, or signal transmission). Operation may be adjusted to compensate for presence, absence, intensity, and/or color point of ambient or incident light. Presence of five or more groups of solid state light emitters provide desirable luminous flux, color point, correlated color temperature (CCT), color rendering index (CRI), CRI R9, and luminous efficacy characteristics of aggregate emissions over a wide range of CCT values, and may permit adjustment of vividness (e.g., relative gamut) and/or melatonin suppression characteristics for a selected color point or CCT.
F21V 19/00 - Fastening of light sources or lamp holders
F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
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 47/16 - Controlling the light source by timing means
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
An overhead light fixture includes a driver assembly and a light-emitting assembly. The driver assembly includes a driver and a housing. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light-emitting assembly is detachably secured to the driver assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. The driver assembly is optionally configured so that, when the light-emitting assembly is detached from the driver assembly, the driver is removable downwardly through the base portion. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.
Detection and identification of auditory events in distributed lighting networks is provided. Lighting fixtures or other devices in a distributed lighting network can incorporate an audio sensor (e.g., a microphone) through which auditory events (e.g., air leaks in compressed air systems, high noise events, shots fired, clapping, voice commands, etc.) are detected and measured. Through machine learning (e.g., a convolutional neural network), a type of auditory event can be identified, and action can be taken based on the type of the auditory event, such as to provide notification, alert nearby users, log events, provide sound cancelation, and so on. In some examples, the auditory event can be localized using multiple audio sensors. In some examples, a learning algorithm can fuse information from multiple sensor inputs, such as temperature sensors, cameras, occupancy sensors, light sensors, and so on.
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
42.
Portable distance notification systems and applications thereof
Distance notification systems are described herein which, in some embodiments, are wearable by a user to maintain proper social distancing in any environment. Additionally, distance notification systems described herein can be applied to motorized equipment and/or other machinery in efforts to maintain a safe workplace, such as in factories, construction sites, warehouses, and/or other logistics operations. In one aspect, a distance notification system comprises a signal component, and a receiving component for processing encoded signal generated by the signal component into system user notifications. The encoded signal has power in excess of a predetermined threshold within a set distance between the signal component and the receiving component, wherein less than 10 percent of system user notifications are produced by encoded signal reflected from one or more surfaces.
G08B 13/14 - Mechanical actuation by lifting or attempted removal of hand-portable articles
G08B 21/02 - Alarms for ensuring the safety of persons
H04W 4/029 - Location-based management or tracking services
G09F 27/00 - Combined visual and audible advertising or displaying, e.g. for public address
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
G08B 21/24 - Reminder alarms, e.g. anti-loss alarms
43.
Light management system for wireless enabled fixture
A lighting management system includes communications circuitry, processing circuitry, and a memory. The memory stores instructions, which, when executed by the processing circuitry cause the lighting management system to receive a message from a lighting fixture via the communications circuitry, the message indicating a proximal presence of a detected mobile device to the lighting fixture, and performing one or more actions in response to receipt of the message. By performing the one or more actions upon receipt of the message as described above, a lighting system may be provided with additional functionality that enhances the lighting system.
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
H05B 47/19 - Controlling the light source by remote control via wireless transmission
H05B 47/195 - Controlling the light source by remote control via wireless transmission the transmission using visible or infrared light
44.
Electrically controlling the field of view of a passive infrared sensor
A motion sensing device adapts a field of view around a primary sensing axis of the motion sensing device by electrically controlling a detection sensitivity of a passive infrared sensor of the motion sensing device. Responsive to adapting the field of view, the motion sensing device monitors for motion within the field of view using the passive infrared sensor.
Embodiments of the present disclosure generally relate to light fixtures and luminaires configured to emit light. According to one aspect, an optical waveguide includes a first waveguide portion and a second waveguide portion adjacent to and separate from the first waveguide portion. The waveguide portions include light coupling portions that are at least partially aligned and adapted to receive light developed by a light source. The first waveguide portion further has a first major surface with light direction features and a second major surface opposite the first major surface. The second waveguide portion further has a third major surface proximate the second major surface with an air gap disposed therebetween and a fourth major surface opposite the third major surface wherein the fourth major surface includes a cavity extending therein.
G02B 6/00 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
In one aspect, optic assemblies are provided comprising a collimating optic directing light along a collimation axis and light redirection elements comprising facets for redirecting a portion of the light in one or more directions away from the collimation axis.
F21V 5/08 - Refractors for light sources producing an asymmetric light distribution
F21W 131/103 - Outdoor lighting of streets or roads
F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
F21V 29/77 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
F21V 29/83 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
A lighting fixture includes a housing, a light source, an optics array, and control circuitry. The housing includes an opening through which light is provided from the lighting fixture towards an area of interest. The light source is in the housing and includes a number of solid-state light sources. The optics array is also in the housing and includes a number of optics. Each optic in the optics array is configured to focus light from each one of the light sources into a number of beams of light such that each one of the beams of light is provided through the opening of the housing at a different angle. The control circuitry is configured to selectively illuminate the number of solid-state lighting sources such that a direction of light provided by the lighting fixture dynamically changes over time.
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
A lighting fixture includes a housing, a light source, an optics array, and control circuitry. The housing includes an opening through which light is provided from the lighting fixture towards an area of interest. The light source is in the housing and includes a number of solid-state light sources. The optics array is also in the housing and includes a number of optics. Each optic in the optics array is configured to focus light from each one of the light sources into a number of beams of light such that each one of the beams of light is provided through the opening of the housing at a different angle. The control circuitry is configured to selectively illuminate the number of solid-state lighting sources such that a direction of light provided by the lighting fixture dynamically changes over time.
Optic couplings, including optic retention rings, are described herein that require reduced tooling or no tooling for optic installation on luminaires. Briefly, a retention ring for coupling an optic to a luminaire comprises radial alignment assemblies comprising a base, and a protrusion extending from a surface of the base for engaging a coupling assembly of the optic. At least one radial locking assembly is offset from the radial alignment assemblies, the radial locking assembly comprising a vertical protrusion for engaging an aperture of the optic coupling assembly and locking rotation of the optic relative to the radial alignment assemblies.
In one aspect, a lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by refractive walls. The lens also comprises a light extraction side opposite the light receiving side, the light extraction side comprising refractive extraction surfaces diverging light from a central axis of the lens. In some embodiments, the refractive walls of the grooves work in conjunction with the refractive extraction surfaces to diverge light from the central axis of the lens. In some embodiments, luminaire comprises an array of light emitting diodes; and the lens positioned over the array of light emitting diodes.
An optical member includes a curved portion comprising an optically transmissive material. The enclosure has an outer surface and an inner surface opposite the outer surface. At least one light redirection feature protrudes from the inner surface. At least one indentation defined on the outer surface is configured to refract light.
A luminaire has a first housing portion (8) and a second housing portion (10) formed of a polymeric material. A LED light source (22) in the housing; A hinge (60) pivotably connects the first housing portion to the second housing portion and includes a pintle (62) formed as one-piece with one of the first and second housing portions and a knuckle (70) formed as one-piece with the other one of the first and second housing portions, the at least one pintle being rotatably received in the at least one knuckle.
F21V 31/00 - Gas-tight or water-tight arrangements
F21V 29/83 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 8/08 - Lighting devices intended for fixed installation with a standard
A luminaire has a first housing portion and a second housing portion formed of a polymeric material. A hinge pivotably connects the first housing portion to the second housing portion and includes a pintle formed as one-piece with one of the first and second housing portions and a knuckle formed as one-piece with the other one of the first and second housing portions. A sealing structure seals a compartment formed between the first housing portion and the second housing portion. The sealing structure includes a channel supported by one of the first and second housing portions and a frame supported in the channel. The frame supports a deformable gasket. A sealing member extends from the other one of the first and second housing portions where the sealing member extends into the channel and engages the gasket. A locking feature secures the first housing portion to the second housing portion.
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 15/01 - Housings, e.g. material or assembling of housing parts
F21V 31/00 - Gas-tight or water-tight arrangements
F21S 8/08 - Lighting devices intended for fixed installation with a standard
A light fixture with a troffer design. One light fixture includes light guide plates that extend above a back pan of the housing. LED assemblies are connected to light guide plates and direct light into the light guide plates through one of the outer edges. Each of the light guide plates receive the light through the outer edge and directs the light outward from the outer surface. Another light fixture includes a back pan, first and second light panels that are positioned above and spaced away from the back pan. Pixels are mounted on the outer surface of the light panels with each of the pixels configured to emit light.
F21V 29/00 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems
F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
F21K 9/68 - Details of reflectors forming part of the light source
Optic couplings, including optic retention rings, are described herein that require reduced tooling or no tooling for optic installation on luminaires. Briefly, a retention ring for coupling an optic to a luminaire comprises radial alignment assemblies comprising a base, and a protrusion extending from a surface of the base for engaging a coupling assembly of the optic. At least one radial locking assembly is offset from the radial alignment assemblies, the radial locking assembly comprising a vertical protrusion for engaging an aperture of the optic coupling assembly and locking rotation of the optic relative to the radial alignment assemblies.
A lighting apparatus a first group of at least one first solid state emitter, each first solid state emitter including a first light emitting diode (“LED”) that, when excited, emits light having a peak wavelength in a range between about 440 nm and about 475 nm, and a second group of at least one second solid state emitter, each second solid state emitter comprising a second LED that, when excited, emits light having a peak wavelength in a range between about 390 nm and about 415 nm. Between about 2% and about 15% of a spectral power of light emitted from the lighting apparatus is light having wavelengths in the range between about 390 nm and about 415 nm.
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 a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
F21K 9/232 - 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 an essentially omnidirectional light distribution, e.g. with a glass bulb
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
F21Y 113/17 - Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
Optic couplings, including optic retention rings, are described herein that require reduced tooling or no tooling for optic installation on luminaires. Briefly, a retention ring for coupling an optic to a luminaire comprises radial alignment assemblies comprising a base, and a protrusion extending from a surface of the base for engaging a coupling assembly of the optic. At least one radial locking assembly is offset from the radial alignment assemblies, the radial locking assembly comprising a vertical protrusion for engaging an aperture of the optic coupling assembly and locking rotation of the optic relative to the radial alignment assemblies.
A light emitting diode (LED) fixture includes an electrical connector that is configured to receive an input signal from a constant current network that has a voltage in a range from a first voltage value to a second voltage value; an LED load; an LED driver circuit coupled to the LED load, the LED driver circuit configured to operate between a third voltage value and a fourth voltage value, wherein the third voltage value is greater than the first voltage value; and a conversion circuit coupled between the electrical connector and the LED driver circuit, the conversion circuit configured to output an electrical signal in response to the input signal from the constant current network, the electrical signal having a voltage that is between the third voltage value and the fourth voltage value.
Luminaires are described herein employing waveguides and associated architectures for dynamic alteration of illuminance distribution patterns. The waveguide includes a light extraction component. The waveguide transmits light from a light source to the light extraction component by total internal reflection (TIR). The light extraction component includes one or more reversibly moveable surfaces for altering illuminance distribution patterns of the luminaire in response to one or more forces applied to the light extraction component by a force application assembly of the luminaire.
G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
F21S 6/00 - Lighting devices intended to be free-standing
G02B 6/122 - Basic optical elements, e.g. light-guiding paths
F21Y 105/18 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annularPlanar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
F21Y 105/16 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
According to an aspect of the present disclosure, a luminaire comprises a plurality of waveguides, a light source arranged to direct light into the plurality of waveguides, and a plurality of extraction feature patterns. The luminaire contemplated by the present disclosure is arranged with the plurality of waveguides are aligned such that an extraction feature pattern extracts light out of a first waveguide of the plurality of waveguides and a second extraction feature pattern extracts light out of a second waveguide of the plurality of waveguides. Further, in accordance with this aspect, the light extracted out of the first waveguide is directed through the second waveguide to develop an appearance of depth.
Solid state lighting devices (14) are configured to provide aggregate emissions that include emissions from solid state light emitters (16-1,16-2) and emissions that are received by preferential reflector structures (18). Preferential reflectors have nonuniform spectral reflectivities that preferentially reflect certain wavelengths of emissions that are received from solid state light emitters. Solid state lighting devices (14) include solid state light emitters (16-1,16-2) of different correlated color temperature (CCT) values and one or more preferential reflectors configured to shift CCT values of aggregate emissions of such solid state lighting devices, such as to provide tunable aggregate emissions between multiple CCT values along or near a black body locus.
F21K 9/68 - Details of reflectors forming part of the light source
F21V 7/22 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
F21V 7/24 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
Systems and methods for providing dynamic lighting are provided. In an exemplary aspect, one or more characteristics of light provided from a lighting device or a group of lighting devices changes over time to shape the environment of an indoor space according to dynamic lighting instructions. Dynamic lighting may improve the health or wellbeing of individuals in an indoor space, for example, by simulating an outdoor environment to reduce stress, by providing circadian entrainment to improve sleep and wakefulness, or the like. Other aspects of the present disclosure enable lighting devices to provide light that is synchronized with one or more other devices and does not significantly drift over time so that the lighting devices can provide seamless dynamic lighting experiences that shape the environment of an indoor space.
A lighting fixture (10) includes a housing (12), a light source (14), and a diffuser (16). The light source is mounted in the housing. The diffuser is also mounted in the housing such that light emitted from the light source is provided through the diffuser towards an area of interest. The diffuser is configured such that a color of the diffuser is based on one or more characteristics of the light emitted from the light source. Providing the diffuser such that the color thereof is based on one or more characteristics of the light emitted from the light source allows the aesthetic appearance of the lighting fixture to be changed. Further, it allows the lighting fixture to better simulate outdoor environments. Finally, it allows the lighting fixture to convey information to individuals near the lighting fixture without being disruptive.
Systems and methods for providing dynamic lighting are provided. In an exemplary aspect, one or more characteristics of light provided from a lighting device or a group of lighting devices changes over time to shape the environment of an indoor space according to dynamic lighting instructions. Dynamic lighting may improve the health or wellbeing of individuals in an indoor space, for example, by simulating an outdoor environment to reduce stress, by providing circadian entrainment to improve sleep and wakefulness, or the like. Other aspects of the present disclosure enable lighting devices to provide light that is synchronized with one or more other devices and does not significantly drift over time so that the lighting devices can provide seamless dynamic lighting experiences that shape the environment of an indoor space.
A lighting fixture includes a housing, a light source, and a diffuser. The light source is mounted in the housing. The diffuser is also mounted in the housing such that light emitted from the light source is provided through the diffuser towards an area of interest. The diffuser is configured such that a color of the diffuser is based on one or more characteristics of the light emitted from the light source. Providing the diffuser such that the color thereof is based on one or more characteristics of the light emitted from the light source allows the aesthetic appearance of the lighting fixture to be changed. Further, it allows the lighting fixture to better simulate outdoor environments. Finally, it allows the lighting fixture to convey information to individuals near the lighting fixture without being disruptive.
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21V 23/04 - Arrangement of electric circuit elements in or on lighting devices the elements being switches
F21V 9/40 - 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
F21V 3/04 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings
An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.
Tenon-mounted lighting fixtures with high structural integrity are provided. In one embodiment, the lighting fixture has a housing that has an integrally formed tenon cradle, which is configured to receive a tenon of a light pole. A light source is also mounted on a bottom side of the housing. The tenon cradle is between a first bolt boss and a second bolt boss, and is in communication with a rear opening of the housing. The first and second bolt bosses may be integrally formed in the housing. The tenon cradle includes multiple ribs. An arcuate cross rib resides in a first plane in which a first bolt shaft of the first bolt boss and a second bolt shaft of the second bolt boss reside. An axial rib intersects the arcuate cross rib and runs perpendicular to the first plane.
A lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by a central refractive region and walls comprising total internal reflection faces; and a light extraction side opposite the light receiving side, wherein an axis bisecting the central refractive region forms an angle with a vertical axis of the lens ranging from greater than zero degrees to less than 90 degrees. In some embodiments, luminaire comprises an array of light emitting diodes; and the lens positioned over the array of light emitting diodes.
A light fixture, e.g., as an artificial skylight, in which light within a region defined by x, y color coordinates (0.37, 0.34), (0.35, 0.38), (0.15, 0.20), and (0.20, 0.14) exits a first light engine, and light within a region defined by coordinates (0.29, 0.32), (0.32, 0.29), (0.41, 0.36), (0.48, 0.39), (0.48, 0.43), (0.40, 0.41), and (0.35, 0.38) exits a second light engine. Also, light fixtures in which a second light engine comprises a sidewall, and light exiting a first light engine passes through space defined by the sidewall; light fixtures in which first and second light engines are able to output light providing different CS values at a luminance; light fixtures in which light incident on a surface of the fixture and cumulative light exiting the fixture have different color points; light fixtures in which light distribution characteristics of light engines differ; and/or other features. The invention also relates to corresponding methods.
F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for
F21S 19/00 - Lighting devices or systems employing combinations of electric and non-electric light sourcesReplacing or exchanging electric light sources with non-electric light sources or vice versa
F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
F21S 8/00 - Lighting devices intended for fixed installation
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21Y 113/17 - Combination of light sources of different colours comprising an assembly of point-like light sources forming a single encapsulated light source
In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen.
F21K 9/232 - 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 an essentially omnidirectional light distribution, e.g. with a glass bulb
F21V 29/65 - Cooling arrangements characterised by the use of a forced flow of gas, e.g. air the gas flowing in a closed circuit
F21V 29/85 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
F21Y 107/30 - Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
F21Y 107/40 - Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
F21V 29/75 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
F21V 3/10 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings
F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
A luminaire that includes a light emitting diode (LED) array configured to produce light in a first direction along a propagation path. An optical waveguide is spaced apart from the LED array by a gap and with the optical waveguide and the gap disposed along the propagation path. The optical waveguide is configured to receive the light along the propagation path at the first waveguide surface and transmit the light away from the luminaire at the second waveguide surface. A housing is mounted to the LED array and the optical waveguide and includes a slot directly adjacent to the gap.
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
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 29/75 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
F21V 9/32 - Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
F21S 10/02 - Lighting devices or systems producing a varying lighting effect changing colours
F21S 10/00 - Lighting devices or systems producing a varying lighting effect
A distributed, parallel, image capture and processing architecture provides significant advantages over prior art systems. A very large array of computational circuits—in some embodiments, matching the size of the pixel array—is distributed around, within, or beneath the pixel array of an image sensor. Each computational circuit is dedicated to, and in some embodiments is physically proximal to, one, two, or more associated pixels. Each computational circuit is operative to perform computations on one, two, or more pixel values generated by its associated pixels. The computational circuits all perform the same operation(s), in parallel. In this manner, a very large number of pixel-level operations are performed in parallel, physically and electrically near the pixels. This obviates the need to transfer very large amounts of pixel data from a pixel array to a CPU/memory, thus alleviating the significant high-speed performance constraints placed on modern image sensors.
H04N 5/372 - Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS
H04N 5/3745 - Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
G05B 15/02 - Systems controlled by a computer electric
H04N 5/378 - Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
An indirect troffer. Embodiments of the present invention provide a troffer-style fixture that is particularly well-suited for use with solid state light sources, such as LEDs. The troffer comprises a light engine unit that is surrounded on its perimeter by a reflective pan. A back reflector defines a reflective interior surface of the light engine. To facilitate thermal dissipation, a heat sink is disposed proximate to the back reflector. A portion of the heat sink is exposed to the ambient room environment while another portion functions as a mount surface for the light sources that faces the back reflector. One or more light sources disposed along the heat sink mount surface emit light into an interior cavity where it can be mixed and/or shaped prior to emission. In some embodiments, one or more lens plates extend from the heat sink out to the back reflector.
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21V 29/74 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
F21V 29/75 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
F21V 7/30 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
F21V 7/24 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
F21V 13/04 - Combinations of only two kinds of elements the elements being reflectors and refractors
F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
portable social distancing devices are described herein which, in some embodiments, are wearable by a user to maintain proper social distancing in any environment. In one aspect, a portable social distancing device comprises a housing, a mounting assembly coupled to the housing, and a projection assembly comprising two or more adjustable light sources for projecting a visible perimeter a predetermined distance from the portable social distancing device. The two or more light sources, for example, can be independently adjustable along two axes.
F21V 21/00 - Supporting, suspending, or attaching arrangements for lighting devicesHand grips
F21V 21/08 - Devices for easy attachment to a desired place
F21V 19/02 - Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
F21S 9/02 - Lighting devices with a built-in power supplySystems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
G08B 21/02 - Alarms for ensuring the safety of persons
G08B 5/36 - Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmissionVisible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electromagnetic transmission using visible light sources
A41D 13/01 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with reflective or luminous safety means
Optical lenses and associated luminaire are described herein. In one aspect, a lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by a central refractive region and walls comprising total internal reflection faces; and a light extraction side opposite the light receiving side, the light extraction side comprising refractive extraction surfaces, total internal reflection extraction surfaces, or combinations thereof. In some embodiments, luminaire comprises an array of light emitting diodes; and the lens positioned over the array of light emitting diodes.
A lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by a central refractive region and walls comprising total internal reflection faces; and a light extraction side opposite the light receiving side, the light extraction side comprising refractive extraction surfaces, total internal reflection extraction surfaces, or combinations thereof. In some embodiments, luminaire comprises an array of light emitting diodes, and the lens positioned over the array of light emitting diodes.
F21Y 105/18 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array annularPlanar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
In one aspect, optic assemblies are provided comprising a collimating optic directing light along a collimation axis and light redirection elements comprising facets for redirecting a portion of the light in one or more directions away from the collimation axis.
F21V 5/08 - Refractors for light sources producing an asymmetric light distribution
F21W 131/103 - Outdoor lighting of streets or roads
F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
F21V 29/77 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
F21V 29/83 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
A modular troffer-style fixture particularly well-suited for use with solid state light sources. The fixture comprises a reflector that includes parallel rails running along its length, providing a mount mechanism and structural support. An exposed heat sink is disposed proximate to the reflector. The portion of the heat sink facing the reflector functions as a mount surface for the light sources. The heat sink is hollow through the center in the longitudinal direction. The hollow portion defines a conduit through which electrical conductors can be run to power light emitters. One or more light sources disposed along the heat sink mount surface emit light toward the reflector where it can be mixed and/or shaped before it is emitted from the troffer as useful light. End caps are arranged at both ends of the reflector and heat sink, allowing for the easy connection of multiple units in a serial arrangement.
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 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21V 15/015 - Devices for covering joints between adjacent lighting devicesEnd coverings
F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
F21V 7/24 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
F21V 7/28 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
F21V 21/005 - Supporting, suspending, or attaching arrangements for lighting devicesHand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
F21V 29/85 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
F21S 9/02 - Lighting devices with a built-in power supplySystems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
F21S 8/04 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
According to one aspect, a waveguide comprises a waveguide body having a coupling cavity defined by a coupling feature disposed within the waveguide body. A plug member comprises a first portion disposed in the coupling cavity and an outer surface substantially conforming to the coupling feature and a second portion extending from the first portion into the coupling cavity. The second portion includes a reflective surface adapted to direct light in the coupling cavity into the waveguide body.
F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
Solid state lighting devices are configured to provide aggregate emissions that include emissions from solid state light emitters and emissions that are received by preferential reflector structures. Preferential reflectors have non-uniform spectral reflectivities that preferentially reflect certain wavelengths of emissions that are received from solid state light emitters. Solid state lighting devices include solid state light emitters of different correlated color temperature (CCT) values and one or more preferential reflectors configured to shift CCT values of aggregate emissions of such solid state lighting devices, such as to provide tunable aggregate emissions between multiple CCT values along or near a black body locus.
F21V 7/24 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
F21K 9/62 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
F21Y 105/16 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
A light fixture with a troffer design. The light fixture includes a housing, LED assembly, and lens assembly. An inner lens can be positioned over the LED assembly to control the distribution of light. A reflector can be positioned over the LED assembly instead of the inner lens to control the light.
The present invention relates to different embodiments of lighting fixtures, such as high bay lighting fixtures, comprising one or more improved features. Some of these features include the direct mounting of emitters on a heat sink and/or the use of a template-like board for providing an electrical connection between emitters. These features can improve heat dissipation from the emitters and simplify fabrication. In other embodiments, expensive lens optics of prior art SSL fixtures can be replaced with a flat lens and reflector in order to produce a fixture having a satisfactory spacing criterion.
H05K 3/00 - Apparatus or processes for manufacturing printed circuits
F21V 7/09 - Optical design with a combination of different curvatures
F21V 29/77 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
F21Y 105/10 - Planar light sources comprising a two-dimensional array of point-like light-generating elements
This disclosure relates to LED based lighting systems, such as surface mounted lighting systems and lighting systems that can connected to an existing grid structure. These lighting systems can be utilized in many settings, for example, as primary lighting systems for a commercial building and for retrofit lighting improvement purposes. Devices according to the present disclosure provide lighting systems capable of mounting to an existing surface, such as a T-bar ceiling structure. These devices can further comprise modular elements which facilitate connections of multiple lighting body components, allowing for multiple lighting arrangements and providing a cost effective and easily configurable lighting design. In some embodiments, multiple lighting components can be attached together by movable joints, allowing further user control over light distribution from the lighting systems.
F21S 8/04 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure
F21V 21/02 - Wall, ceiling, or floor basesFixing pendants or arms to the bases
F21V 21/15 - Adjustable mountings specially adapted for power operation, e.g. by remote control
F21V 15/01 - Housings, e.g. material or assembling of housing parts
F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
F21V 21/005 - Supporting, suspending, or attaching arrangements for lighting devicesHand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
E04B 9/00 - CeilingsConstruction of ceilings, e.g. false ceilingsCeiling construction with regard to insulation
F21K 9/20 - Light sources comprising attachment means
An overhead light fixture (10) includes a driver assembly (20) and a light-emitting assembly (70). The driver assembly includes a driver (50) and a housing (22). The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source (72) of the light-emitting assembly. The light emitting assembly is detachably secured to the driver assembly. The light fixture is configured to be mounted to a canopy sheet (5) of an overhead canopy (3), with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. The driver assembly is optionally configured so that, when the light-emitting assembly is detached from the driver assembly, the driver is removable downwardly through the base portion. A bezel (80) is optionally disposed around a lens (76) of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21V 17/00 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
An overhead light fixture includes a driver assembly and a light-emitting assembly. The driver assembly includes a driver and a housing. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light-emitting assembly is detachably secured to the driver assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. The driver assembly is optionally configured so that, when the light-emitting assembly is detached from the driver assembly, the driver is removable downwardly through the base portion. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.
An overhead light fixture (10) includes a driver assembly (20) and a light-emitting assembly (70). The driver assembly includes a driver (50) and a housing (22). The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source (72) of the light-emitting assembly. The light emitting assembly is detachably secured to the driver assembly. The light fixture is configured to be mounted to a canopy sheet (5) of an overhead canopy (3), with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. The driver assembly is optionally configured so that, when the light-emitting assembly is detached from the driver assembly, the driver is removable downwardly through the base portion. A bezel (80) is optionally disposed around a lens (76) of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21V 17/00 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
96.
Lighting fixture that transmits switch module information to form lighting networks
A lighting fixture having a light source, a light sensor, a communication interface, and circuitry is described. In addition to controlling the light source, the circuitry is adapted to monitor for a light signal provided from a handheld device via the light sensor; upon receiving the light signal, measure a signal level associated with the light signal; and effect transmission of the signal level to the handheld device via the communication interface. In one embodiment, the circuitry is further configured to receive an instruction to monitor for the light signal from the handheld device via the communication interface such that the circuitry begins monitoring for the light signal upon receiving the instruction.
An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.
A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21S 8/00 - Lighting devices intended for fixed installation
F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
F21S 19/00 - Lighting devices or systems employing combinations of electric and non-electric light sourcesReplacing or exchanging electric light sources with non-electric light sources or vice versa
F21Y 105/16 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
F21Y 113/13 - Combination of light sources of different colours comprising an assembly of point-like light sources
An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.
A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.
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 a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
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