Patents Assigned to Lumileds LLC
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Publication number: 20230411579Abstract: Display devices comprise an optionally transparent display area that extends to one or more physical boundaries (edges) of the device. The display area may be located on a front surface of the display device, and the physical boundaries of the device to which the display area extends may be formed by physical sides of the device that intersect with the front surface to define part of a perimeter of the front surface. The display area may comprise a microLED array that extends with the display area to edges of the device. Power and/or control electronics for the display device may be located adjacent the display area but away from the edges of the display device to which the display area extends. Two or more such display devices can be arranged (i.e., tiled) with their display areas adjacent, in contact, and facing the same direction to form an extended continuous microLED display area spanning the display areas of the two or more display devices.Type: ApplicationFiled: June 9, 2023Publication date: December 21, 2023Applicant: Lumileds LLCInventors: Brendan Jude MORAN, Wouter SOER, Grigoriy BASIN, Johannes Willem Herman Sillevis Smitt
-
Patent number: 11848402Abstract: Described are light emitting diode (LED) devices comprising a plurality of mesas defining pixels, each of the mesas comprising semiconductor layers, an N-contact material in a space between each of the plurality of mesas, a dielectric material which insulates sidewalls of the P-type layer and the active region from the metal. A multilayer composite film is on the P-type layer, the multilayer composite film comprising: a current spreading layer on the P-type layer, the current spreading layer having a first portion and a second portion; a dielectric layer on the second portion of the current spreading layer; a via opening defined by sidewalls in the dielectric layer and the first portion of the current spreading layer; and a P-contact layer in the via opening on the first portion of the current spreading layer, the sidewalls in the dielectric layer, and on at least a portion of the dielectric layer.Type: GrantFiled: March 5, 2021Date of Patent: December 19, 2023Assignee: Lumileds LLCInventors: Erik William Young, Rajat Sharma, Dennis Scott
-
Patent number: 11835362Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.Type: GrantFiled: October 13, 2021Date of Patent: December 5, 2023Assignee: Lumileds LLCInventors: Charles Schrama, Cristian Dan
-
Publication number: 20230383182Abstract: A method of forming a nitridophosphate is disclosed, the method including forming a precursor mixture by combining a metal source material, a phosphorus source material, and a nitrogen source material, and heating the precursor mixture at a maximum temperature between 800° C. and 1300° C. in an atmosphere including nitrogen gas at a pressure between 2 MPa and 500 MPa.Type: ApplicationFiled: March 12, 2021Publication date: November 30, 2023Applicant: Lumileds LLCInventors: Sebastian WENDL, Peter Josef SCHMIDT, Wolfgang SCHNICK