Patents Assigned to Lumileds LLC
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Patent number: 11754255Abstract: A luminaire can include a curved light guide plate including a first receiving surface, an emitting surface, a major surface opposing the emitting surface, second and third receiving surfaces, the first receiving surface extending in a first dimension between the major surface and the emitting surface and extending in a second dimension between the second and third receiving surfaces, the first receiving surface, emitting surface, and major surface including a positive, non-zero radius of curvature (R) and the second and third receiving surfaces generally planar, and a plurality of LEDs positioned to emit light into one or more of the first receiving surface, second receiving surface, third receiving surface, or a fourth receiving surface, the fourth receiving surface opposing the first receiving surface.Type: GrantFiled: December 14, 2020Date of Patent: September 12, 2023Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Mehdi Aas, Charles André Schrama
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Patent number: 11756947Abstract: Light-emitting devices are described herein. A device includes a packaging substrate having a top surface and a bottom surface and a hybridized device having a bottom surface on the top surface of the packaging substrate. The hybridized device includes a silicon backplane that includes input/output (I/O) pins and a light-emitting diode (LED) array having a bottom surface on a top surface of the silicon backplane. Passive components are disposed on the top surface of the packaging substrate. Conductive connectors are electrically coupled between the top surface of the hybridized device and the top surface of the packaging substrate.Type: GrantFiled: July 21, 2020Date of Patent: September 12, 2023Assignee: Lumileds LLCInventors: Wan-Ying Sau, Ronald Johannes Bonne, Zhi Hua Song
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Patent number: 11757066Abstract: A device, system and method for producing enhanced external quantum efficiency (EQE) LED emission are disclosed. The device, system and method include a patterned layer configured to transform surface modes into directional radiation, a semiconductor layer formed as a III/V direct bandgap semiconductor to produce radiation, and a metal back reflector layer configured to reflect incident radiation. The patterned layer may be one-dimensional, two-dimensional or three-dimensional. The patterned layer may be submerged within the semiconductor layer or within the dielectric layer. The semiconductor layer is p-type gallium nitride (GaN). The patterned layer may be a hyperbolic metamaterials (HMM) layer and may include Photonic Hypercrystal (PhHc), or may be a low or high refractive index material or may be a metal.Type: GrantFiled: May 26, 2021Date of Patent: September 12, 2023Assignee: Lumileds LLCInventors: Venkata Ananth Tamma, Toni Lopez
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Publication number: 20230278487Abstract: An automobile rear lighting includes a first emitter that emits a first light through a cover and a second emitter that emits a second light, different from the first light, through the cover such that an output light including the first light and the second light is emitted through the cover. The automobile rear lighting also includes a driving apparatus. The driving apparatus provides a first driving current to the first emitter and a second driving current to the second emitter. The driving apparatus adapts a magnitude of the first driving current and the second driving current based on at least one of at least one property of the cover or at least one optical component of the automobile rear lighting and a pre-defined color coordinates specification for the output light.Type: ApplicationFiled: May 18, 2021Publication date: September 7, 2023Applicant: LUMILEDS LLCInventors: Peter JOST, Andreas TIMINGER
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Publication number: 20230282784Abstract: A device comprising a light emitting diode (LED) substrate, and a meta-molecule wavelength converting layer positioned within an emitted light path from the LED substrate, the a meta-molecule wavelength converting layer including a plurality of nanoparticles, the plurality of nanoparticles configured to increase a light path length in the wavelength converting layer.Type: ApplicationFiled: March 6, 2023Publication date: September 7, 2023Applicant: LUMILEDS LLCInventors: Venkata Ananth Tamma, Antonio Lopez-Julia
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Publication number: 20230280021Abstract: A lighting device and a method of manufacturing a lighting device are described. The lighting device includes a heat sink having a mounting area. A main board is mounted to the mounting area of the heat sink, the main board including a recess. A light-emitting diode (LED) assembly is mounted to the mounting area within the recess of the main board. The LED assembly includes at least one emitter. Electrical circuitry is disposed on the top surface of the main board, which is configured to control the at least one emitter of the LED assembly. An electrical connection is provided between the LED assembly and the electrical circuitry.Type: ApplicationFiled: May 18, 2021Publication date: September 7, 2023Applicant: LUMILEDS LLCInventor: Florent MONESTIER
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Publication number: 20230280012Abstract: A lighting module includes a first light source that generates a low beam with a bright/dark cut-off line and a second light source. First optics redirects a first part of light from the first light source to create a main part of the low beam substantially below the bright/dark cut-off line. Second optics is spaced apart from the first optics and redirects a second part of light from the first light source to create a zone III beam of the low beam substantially above the bright/dark cut-off line and redirects a fourth part of light from the second light source to create a concentrated beam of the high beam in front of the vehicle. Third optics redirects a third part of light from the second light source to create a main part of a high beam.Type: ApplicationFiled: July 26, 2021Publication date: September 7, 2023Applicant: LUMILEDS LLCInventor: Kang LU
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Publication number: 20230282489Abstract: Systems are described. A system includes a silicon backplane having a top surface, a bottom surface, and side surfaces and a substrate surrounding the side surfaces of the silicon backplane. The substrate has a top surface, a bottom surface and side surfaces. At least one bond pad is provided on the bottom surface of the substrate. A metal layer is provided on the bottom surface of the substrate and the bottom surface of the silicon backplane and has a first portion electrically and thermally coupled to the bottom surface of the silicon backplane in a central region and second portions that extend between a perimeter region of the silicon backplane and the at least one bond pad. An array of metal connectors is provided on the top surface of the silicon backplane.Type: ApplicationFiled: February 28, 2023Publication date: September 7, 2023Applicant: Lumileds LLCInventors: Tze Yang HIN, Anantharaman VAIDYANATHAN, Srini BANNA, Ronald Johannes BONNE
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Patent number: 11749789Abstract: An optical coupling structures are disposed on light output surfaces of semiconductor LEDs of a miniLED or microLED array to facilitate coupling of light emitted by the semiconductor LEDs through the light output surfaces. The optical coupling structures comprise light scattering particles and/or air voids embedded in or coated with a thin layer of a material that has an index of refraction close to or matching the index of refraction of the material forming the light output surface of the semiconductor LEDs.Type: GrantFiled: June 9, 2022Date of Patent: September 5, 2023Assignee: Lumileds LLCInventors: Antonio Lopez-Julia, Jens Meyer, Marcel Van Gerwen, Ronja Missong, Joerg Feldmann, Hans-Helmut Bechtel
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Patent number: 11749787Abstract: An array of phosphor pixels is positioned on an array of semiconductor LED pixels with thermally curable adhesive between them. Selected LED pixels of the array are electrically activated; resulting heat cures the adhesive to attach the corresponding phosphor pixel to the activated LED pixel and to release the corresponding phosphor pixel from a carrier. Removal of the carrier removes unattached phosphor pixels, leaving behind phosphor pixels attached to the LED pixels that were activated. The process can be repeated for phosphor pixels of different colors.Type: GrantFiled: April 13, 2022Date of Patent: September 5, 2023Assignee: Lumileds LLCInventors: Emma Dohner, Kentaro Shimizu, Hisashi Masui
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Patent number: 11749790Abstract: A device may include a substrate having a first embedded transistor in a first region and a second embedded transistor in a second region. The first region and the second region may be separated by trench extending through at least a portion of an epitaxial layer formed on the substrate. The first embedded transistor may be connected to a first light emitting diode (LED) and the second embedded transistor may be connected to a second LED. A first optical isolation layer may be between the epitaxial layer and the first region of the substrate. A second optical isolation layer may be between the epitaxial layer and the second region of the substrate.Type: GrantFiled: December 19, 2018Date of Patent: September 5, 2023Assignee: Lumileds LLCInventors: Ashish Tandon, Luke Gordon, Yu-Chen Shen
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Patent number: 11749786Abstract: An array of phosphor pixels is positioned on an array of semiconductor LED pixels with thermally curable adhesive between them. Selected LED pixels of the array are electrically activated; resulting heat cures the adhesive to attach the corresponding phosphor pixel to the activated LED pixel and to release the corresponding phosphor pixel from a carrier. Removal of the carrier removes unattached phosphor pixels, leaving behind phosphor pixels attached to the LED pixels that were activated. The process can be repeated for phosphor pixels of different colors.Type: GrantFiled: April 12, 2022Date of Patent: September 5, 2023Assignee: Lumileds LLCInventors: Emma Dohner, Kentaro Shimizu, Hisashi Masui
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Patent number: 11746975Abstract: A lighting system and a method of operating a lighting module are described. The lighting module includes a heat sink a first LED element mounted on the heat sink emits light as a low beam pattern. A second LED element mounted on the heat sink emits light as a high beam pattern. A driver circuit electrically connected to the first and second LED elements to selectively supply electrical power for operation. The driver circuit is disposed to operate in a first and a second mode. In the first mode, to provide a low beam illumination, the first LED element is operated in a high power state while the second LED element is turned off. In the second mode, to provide a high beam illumination, the second LED element is operated in a high power state, while the first LED element is operated in a dimmed state.Type: GrantFiled: June 18, 2019Date of Patent: September 5, 2023Assignee: LUMILEDS LLCInventors: Jürgen Mertens, Harry Gijsbers, Astrid Marchewka, Benno Spinger
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Publication number: 20230272894Abstract: 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. The at least one light guide includes a cavity having a middle. The at least one light guide is a parabolic collimator having its focus point coincide with the middle of the cavity. The lighting device also includes an encapsulating material that has at least one opening through which light is emitted. The lighting device also includes at least one light-emitting element embedded into the cavity of the light guide. The light-emitting element has a coating oriented towards the at least one opening of the encapsulating material.Type: ApplicationFiled: June 3, 2021Publication date: August 31, 2023Applicant: LUMILEDS LLCInventors: Floris Maria Hermansz Crompvoets, Christian Kleijnen, Florent Monestier
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Publication number: 20230272903Abstract: A lighting device for mounting to an optical element includes a center ring, a heat sink, at least one housing part and at least one fan. The center ring has a first side and a second side and includes a mechanical interface for mechanically coupling the center ring to the optical element. The heat sink includes a lighting module mounting part for connection with at least one relative to the center ring with the entire at least one hollow structure over the first side of the lighting module and at least one hollow structure within the heat sink. The heat sink is positioned center ring. The at least one fan includes at least one blade and a driver. At least a portion of the at least one fan is contained within the at least one housing part with the at least one blade within the at least one hollow structure.Type: ApplicationFiled: July 28, 2021Publication date: August 31, 2023Applicant: LUMILEDS LLCInventors: Marcus Jozef Henricus KESSELS, Matthias EPMEIER, Frank GIESE, Floris Maria Hermansz CROMPVOETS
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Patent number: 11743980Abstract: Various embodiments include apparatuses and methods enabling a wireless control apparatus for an LED array. In one example, a control apparatus includes a wireless module to receive a signal from a wireless control-device. The wireless signal may include signals related to a desired CCT value and a Duv value. A control unit is coupled to the wireless module to translate signals received from the wireless module. The control unit is also coupled to the LED array and to an LED driver. The control unit receive powers for the LED array from the LED driver and provides the power to the LED array in a manner based on the translated signals. A dimmer emulator is coupled to the control unit to provide one or more control signals to the LED driver. Other apparatuses and methods are described.Type: GrantFiled: July 25, 2022Date of Patent: August 29, 2023Assignee: Lumileds LLCInventor: Yifeng Qiu
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Patent number: 11742463Abstract: In a method according to embodiments of the invention, for a predetermined amount of light produced by a light emitting diode and converted by a phosphor layer comprising a host material and a dopant, and for a predetermined maximum reduction in efficiency of the phosphor at increasing excitation density, a maximum dopant concentration of the phosphor layer is selected.Type: GrantFiled: January 27, 2021Date of Patent: August 29, 2023Assignee: Lumileds LLCInventors: Peter Josef Schmidt, Oleg Borisovich Shchekin, Walter Mayr, Hans-Helmut Bechtel, Danielle Chamberlin, Regina Mueller-Mach, Gerd Mueller
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Patent number: 11739910Abstract: A device for controlling illumination of a scene using an LED array that includes a plurality of individually addressable LEDs, built into a hand-held device, is disclosed. The device includes a controller arranged to configure a first sub-set of the LEDs to provide illumination for a target spot in the scene and to monitor movement of the hand-held device. If the controller detects movement of the hand-held device while the first sub-set of the LEDs is providing illumination, then the controller may configure a second sub-set of the LEDs to continue providing illumination of the target spot. In this manner, even though there may have been movement that could change the specific area illuminated by the LED array, the movement is compensated for, at least partially, by selecting one or more other LEDs to illuminate the same target spot in a manner that is substantially unnoticeable to the user.Type: GrantFiled: December 17, 2020Date of Patent: August 29, 2023Assignee: Lumileds LLCInventors: Arjen van der Sijde, Nicola Bettina Pfeffer
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Patent number: 11743989Abstract: A micro light emitting diode (LED) die can include a matrix of micro LEDs with a variety of forward voltages. A method of reducing a number of undriven or under driven uLEDs can include providing, by a power supply, an alternating current voltage (VLED) with a minimum voltage (VMIN) and a maximum voltage (VMAX), VMIN being sufficient to drive a plurality of micro light emitting diodes (uLEDs) of a uLED die using a plurality of uLED drivers, identifying, by a controller coupled to the uLED drivers, a uLED of the plurality of uLEDs with a forward voltage (Vf) greater than VMIN, and altering, by the controller, a time of a rising edge of a pulse width modulation (PWM)-on time of the uLED such that Vf of the uLED is less than VLED for the PWM-on time.Type: GrantFiled: December 15, 2020Date of Patent: August 29, 2023Assignee: Lumileds LLCInventors: Antonio Lopez Julia, Zhi Hua Song
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Patent number: 11742378Abstract: A light emitting diode (LED) may include a conductive via in a first portion of an epitaxial layer and a first contact on a second portion of the epitaxial layer. The first portion and the second portion may be separated by an isolation region. The LED may include a transparent conductive layer on the epitaxial layer.Type: GrantFiled: April 28, 2022Date of Patent: August 29, 2023Assignee: Lumileds LLCInventors: Frederic Stephane Diana, Alan Andrew McReynolds
