Patents Assigned to Lumileds LLC
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Publication number: 20240025342Abstract: A vehicle vision system comprises first and second vehicle headlights configured to project first and second light structures into a travel path of the vehicle to illuminate an object in the travel path. The system includes a camera disposed in the vehicle between the first and second headlights to capture images of the object in response to capture signals. The first and second vehicle headlights alternately project the first and second light structures. A system controller synchronizes the capture signals so that images of the object captured by the camera include reflections of the first and second light structures. An image processor can reconstruct a surface geometry of the object based on the reflected first and second light structures.Type: ApplicationFiled: July 25, 2023Publication date: January 25, 2024Applicant: LUMILEDS LLCInventors: Benno Spinger, Dirk Vanderhaeghen, Ronald Johannes Bonne, Wouter Schrama, Norbert Lesch, Patrick van den Akker
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Publication number: 20240027049Abstract: A lighting system for a vehicle is described, which includes a first hybridized device, a second hybridized device and a controller. The first hybridized device includes a first array of light emitting devices that illuminate a roadway on which the vehicle is located when operating. The second hybridized device includes a second array of light emitting devices that illuminate the roadway on which the vehicle is located when operating. The controller is electrically coupled to the first and second hybridized devices. When operating, the controller causes the first hybridized device to selectively project a first patterned light on to an object on the roadway, causes the first hybridized device to selectively project a second patterned light on to the object on the roadway, and causes a first camera to capture an image of the first patterned light projected on the object and the second patterned light projected on the object.Type: ApplicationFiled: July 25, 2023Publication date: January 25, 2024Applicant: LUMILEDS LLCInventors: Benno Spinger, Dirk Vanderhaeghen, Ronald Johannes Bonne, Wouter Schrama, Norbert Lesch, Patrick van den Akker
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Patent number: 11881542Abstract: A first conversion layer material is formed on unmasked pixel areas of a substrate. Mask material is selectively removed from a second set of pixel areas, leaving a third set of pixel areas masked. A coating is formed on sidewalls of the second pixel areas, and then a second conversion layer material is formed on the second pixel areas and against their sidewalls. Mask material is removed from the third pixel areas, a coating is formed on sidewalls of the third pixel areas, and a third conversion layer material is formed on the third pixel areas and against their sidewalls. The resulting wavelength-conversion layer includes contiguously arranged regions of the first, second, and third conversion layer materials, at least two of which are wavelength-converting phosphor materials. The sidewall coatings between the regions act as barriers to lateral light transmission.Type: GrantFiled: December 6, 2021Date of Patent: January 23, 2024Assignee: Lumileds LLCInventors: Marcel Rene Bohmer, Ken Shimizu
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Patent number: 11877367Abstract: A lighting system includes an LED array having a plurality of LED pixels and a power controller. The power controller adjusts a supply voltage for powering the LED pixels based on one or more conditions of the LED array. The power controller may determine the supply voltage based on process data of the LED array. The power controller may adjust the supply voltage based on an operating temperature of the LED pixels and the amplitude of a current driving the LED pixels.Type: GrantFiled: November 26, 2020Date of Patent: January 16, 2024Assignee: Lumileds LLCInventors: Ronald Johannes Bonne, Zhi Hua Song
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Patent number: 11867370Abstract: An automotive lighting device, a vehicle and a method for operating an automotive lighting device are described. To economically fulfil different lighting functions the automotive lighting device includes a first and a second lighting unit. The first lighting unit is disposed to emit a first light of a first colour. The second lighting unit is disposed to emit a second light of a second colour different from the first colour. A mixing space is arranged to merge the first light and the second light to a third light of a third colour. The third light is disposed to fulfil a first automotive lighting function and the second light is disposed to fulfil a second automotive lighting function. The first automotive lighting function requires a colour within a first colour range and the second automotive lighting function requires a colour within a second colour range which is different from the first colour range.Type: GrantFiled: February 13, 2019Date of Patent: January 9, 2024Assignee: LUMILEDS LLCInventors: Marcus Jozef Henricus Kessels, Aloke Gaur
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Patent number: 11869923Abstract: A light-emitting array includes a semiconductor LED structure, multiple transparent dielectric bodies, a set of multiple, independent first electrical contacts, and a set of second electrical contacts. The LED structure extends contiguously over the array. The second electrical contacts are in electrical contact with the second semiconductor layer. Each dielectric body protrudes away from the first semiconductor layer and has on its surface an electrically conductive layer in electrical contact with the first semiconductor layer, forming a portion of a corresponding one of the first electrical contacts. Each dielectric body and corresponding first electrical contact define a corresponding discrete, circumscribed pixel region within the contiguous area of the array, each pixel region separate from the others.Type: GrantFiled: November 21, 2022Date of Patent: January 9, 2024Assignee: Lumileds LLCInventors: Antonio Lopez-Julia, Aimi Abass
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Patent number: 11870023Abstract: A nano-structure layer is disclosed. The nano-structure layer includes an array of nano-structure material configured to receive a first light beam at a first angle of incidence and to emit the first light beam at a second angle greater than the first angle, the nano-structure material each having a largest dimension of less than 1000 nm.Type: GrantFiled: April 27, 2022Date of Patent: January 9, 2024Assignee: Lumileds LLCInventors: Antonio Lopez-Julia, Venkata Ananth Tamma
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Patent number: 11870012Abstract: A light emitting device comprises a semiconductor diode structure configured to emit light, a substrate that is transparent to light emitted by the semiconductor diode structure, and a reflective nanostructured layer. The reflective nanostructured layer may be disposed on or adjacent to a bottom surface of the substrate and configured to reflect toward and through a side wall surface of the substrate light that is emitted by the semiconductor structure and incident on the reflective nanostructured layer at angles at or near perpendicular incidence. Alternatively, the reflective nanostructured layer may be disposed on or adjacent to at least one sidewall surface of the substrate and configured to reflect toward and through the bottom surface of the substrate light that is emitted by the semiconductor structure and incident on the reflective nanostructured layer at angles at or near perpendicular incidence.Type: GrantFiled: July 12, 2022Date of Patent: January 9, 2024Assignee: Lumileds LLCInventor: Venkata Ananth Tamma
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Patent number: 11867373Abstract: Lighting devices, methods of manufacturing a lighting device, automotive lighting systems including the lighting device are described. A lighting device includes at least one light guide with an elongated recess. Multiple light-emitting elements are embedded into the recess of the light guide, arranged on a flexfoil that is bendable in three different connections, and connected to one another to mimic a filament. At least one encapsulating material encapsulates, at least in part, the at least one light guide. The at least one encapsulating material includes at least one opening and at least one reference element for aligning the at least one light guide in relation to the encapsulating material so that the multiple light-emitting elements emit light exiting the opening. The at least one encapsulating aterial is flexible so that the lighting device is bendable in three different directions.Type: GrantFiled: June 3, 2021Date of Patent: January 9, 2024Assignee: LUMILEDS LLCInventors: Christian Kleijnen, Floris Maria Hermansz Crompvoets, Danny de Kreij
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Publication number: 20240003509Abstract: A hybrid function LED auxiliary lamp is provided. The auxiliary lamp comprises a housing and a lighting assembly disposed within the housing. The lighting assembly includes a plurality of LED light sources mounted on a printed circuit board. An optical manifold comprising a plurality of reflective cavities is mounted on the printed circuit board. Each reflective cavity defines a respective corresponding focal point. The LED light sources are aligned with respect to the optical manifold such that a center of each respective LED light source corresponds to a respective focal point of a reflective cavity.Type: ApplicationFiled: August 3, 2022Publication date: January 4, 2024Applicant: Lumileds LLCInventors: Junxin Wang, Jiangliang Wang, Dongdong Wei, Chen Cai
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Patent number: 11864283Abstract: A temperature monitor and control system for a pixel array includes a first driver connected to a first pixel connected to bus by a first switch, a second driver connected to a second pixel connected to a bus by a second switch, and a control block including connection to the first and second switches. The control block turns on the first switch and turns off the second switch, measures bus voltage, determines an LED forward voltage shift of the first pixel and corresponding temperature shift for the first pixel based on the determined forward voltage shift, and adjusts a driving current for first pixel based on the determined temperature shift.Type: GrantFiled: October 8, 2021Date of Patent: January 2, 2024Assignee: Lumileds LLCInventors: Ronald Johannes Bonne, Zhi Hua Song
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Patent number: 11862759Abstract: Embodiments of the invention include an infrared-emitting phosphor comprising (La,Gd)3Ga5?x?yAlxSiO14:Cry, where 0?x?1 and 0.02?y?0.08. In some embodiments, the infrared-emitting phosphor is a calcium gallogermanate material. In some embodiments, the infrared-emitting phosphor is used with a second infrared-emitting phosphor. The second infrared-emitting phosphor is one or more chromium doped garnets of composition Gd3?x1Sc2?x2?yLux1+x2Ga3O12:Cry, where 0.02?x1?0.25, 0.05?x2?0.3 and 0.04?y?0.12.Type: GrantFiled: September 2, 2020Date of Patent: January 2, 2024Assignee: Lumileds LLCInventors: Peter Josef Schmidt, Rob Engelen, Thomas Diederich
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Patent number: 11860386Abstract: An apparatus and method for displaying an image are disclosed. The apparatus includes microLED unit cells including sets of microLEDs each emitting light and at least one lens to control an emission angle and emission profile of the light emitted by the microLED unit cells. A display controller controls an intensity distribution of the microLED unit cells in accordance with first and second video data signals such that a first portion of the emitted light is emitted at a first emission angle with a first emission profile at a first observation angle relative to a display and a second portion of the emitted light is emitted at a second emission angle with a second emission profile at a second observation angle relative to the display. The first and second light portions form unrelated images.Type: GrantFiled: December 21, 2020Date of Patent: January 2, 2024Assignee: Lumileds LLCInventors: Johannes Willem Herman Sillevis Smitt, Charles André Schrama, Erno Fancsali
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Publication number: 20230420607Abstract: Provided is an LED comprised of a first and a second p-n junction deposited sequentially on the same wafer. The first and second junctions have opposite orders of deposition of the n- and p-layers. One light-emitting active region is embedded between the n- and p-layers of the first junction and another light-emitting active region is embedded between the n- and p-layers of the second junction. Contacts are processed such that forward current can be passed in parallel through both of the junctions using a single voltage source. For a given forward current, the LED operates at lower voltage with higher optical flux and efficiency.Type: ApplicationFiled: June 20, 2023Publication date: December 28, 2023Applicant: Lumileds LLCInventor: Robert Armitage
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Publication number: 20230420627Abstract: Provided is a monolithically integrated red green blue (RGB) light emitting diode (LED) array manufactured with a reduced number of mesa etching steps and contact terminals. The LED array may have two or three p-n-junctions grown sequentially on a wafer. One of the p-n junctions has the opposite order of deposition of the n- and p-layers. A light-emitting active region is embedded between the n- and p-layers of each of the p-n junctions. Each active region emits light of different wavelength. The wafer is etched into multi-level mesas, creating two separate voltage terminals and a ground contact to control the bias between particular semiconductor layers. All of the p-n junctions share a common ground contact.Type: ApplicationFiled: June 20, 2023Publication date: December 28, 2023Applicant: Lumileds LLCInventor: Robert Armitage
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Publication number: 20230420599Abstract: Provided is an LED comprised of a first and a second p-n junction deposited sequentially on the same wafer. The first and second junctions have opposite orders of deposition of the n- and p-layers. One light-emitting active region is embedded between the n- and p-layers of the first junction and another light-emitting active region is embedded between the n- and p-layers of the second junction. Contacts are processed such that forward current can be passed in parallel through both of the junctions using a single voltage source. For a given forward current, the LED operates at lower voltage with higher optical flux and efficiency.Type: ApplicationFiled: June 20, 2023Publication date: December 28, 2023Applicant: Lumileds LLCInventor: Robert Armitage
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Publication number: 20230417387Abstract: A flexible three dimensional display assembly is provided. The flexible display assembly includes electrically interconnected light emitting elements, a flexible lattice fixture and a display bezel. The light emitting elements are electrically interconnected by a system of conductors. The light emitting elements are coupled to the flexible lattice fixture by an arrangement of structurally interconnected framing cells that receive pairs of the light emitting elements. The flexible lattice fixture is secured to the substrate of the display bezel such that the pairs of light emitting elements are maintained in optical alignment with corresponding pairs of apertures of the display bezel.Type: ApplicationFiled: June 23, 2023Publication date: December 28, 2023Applicant: LUMILEDS LLCInventors: Barbara Roswitha Mülders, Udo Karbowski
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Publication number: 20230420426Abstract: Provided is a monolithically integrated red green blue (RGB) light emitting diode (LED) array manufactured with a reduced number of mesa etching steps and contact terminals. The LED array may have two or three p-n-junctions grown sequentially on a wafer. One of the p-n junctions has the opposite order of deposition of the n- and p-layers. A light-emitting active region is embedded between the n- and p-layers of each of the p-n junctions. Each active region emits light of different wavelength. The wafer is etched into multi-level mesas, creating two separate voltage terminals and a ground contact to control the bias between particular semiconductor layers. All of the p-n junctions share a common ground contact.Type: ApplicationFiled: June 20, 2023Publication date: December 28, 2023Applicant: Lumileds LLCInventor: Robert Armitage
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Patent number: 11854384Abstract: Systems, devices, and methods are disclosed in which one or more light sources, a detector, a processor and a controller are configured such that light from the one or more light sources improves the ability of a human or automated motor vehicle driver to identify and avoid pedestrians. The one or more light sources may provide spot illumination to moving objects or pedestrians on a road surface, with the spot illumination following the moving object or pedestrians along the portion of the road surface. The one or more light sources may project images on the ground or on other surfaces. The light source may be carried by a pedestrian or on personal transport used by a pedestrian. The light sources may be stationary and provide lighting for a pedestrian street crossing.Type: GrantFiled: December 19, 2022Date of Patent: December 26, 2023Assignee: Lumileds LLCInventors: Michael Camras, Jyoti Kiron Bhardwaj
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Patent number: 11852858Abstract: A LED lighting system includes a power supply, a LED controller, and a light guide plate having a top, a bottom, and an edge. A printed circuit board connected to the power supply is positioned at least partially under the bottom of the light guide plate. At least one surface-emitting LED is positioned on the printed circuit board adjacent to the light guide plate and directed to emit light vertically. A partially transmissive reflector is attached to extend between the top of the edge of the light guide plate and the printed circuit board to direct vertically emitted light from the at least one surface-emitting LED into the edge of the light guide plate.Type: GrantFiled: October 19, 2021Date of Patent: December 26, 2023Assignee: Lumileds LLCInventors: Frederic Diana, Ken Ratica, Carlos Rodriguez