Patents Assigned to Lumileds LLC
  • Gas sensing system having quadric reflective surface
    Patent number: 11740179
    Abstract: In a gas sensing system, a light emitter can emit light through a gas sample toward a concave reflective surface. The reflective surface can redirect the emitted light to propagate through the gas sample toward a light sensor. Using, optionally, the Beer-Lambert Law, the system can determine a concentration of the gas material in the gas sample. By selecting a specified shape for the reflective surface, such as a complete or partial ellipsoid, and locating the light emitter and the light sensor in specified locations, such as at one or both foci of the ellipsoid, the gas sensing system can reduce variation in optical path length, from optical path to optical path, in the light that propagates from the light emitter, to the reflective surface, and to the light sensor. Reducing the variation in optical path length can improve an accuracy in determining the concentration of the gas material.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: August 29, 2023
    Assignee: Lumileds LLC
    Inventors: Hisashi Masui, Oleg Borisovich Shchekin, Franklin Chiang
  • LIGHTING ELEMENT ALIGNMENT
    Publication number: 20230268457
    Abstract: The invention refers to a method for assembling at least one lighting element onto a substrate, the method comprising: pre-assembling at least one lighting element onto a temporary carrier; pre-assembling at least one reference element onto the temporary carrier; aligning the pre-assembled temporary carrier onto the substrate based, at least in part, on the at least one reference element of the temporary carrier; and mounting the at least one lighting element onto the substrate. The invention further relates to substrate comprising: at least one lighting element, wherein the at least one lighting element is assembled onto the substrate, in particular by a method according to the first aspect of the present invention, and to a use of a method for assembling at least one lighting element onto a substrate.
    Type: Application
    Filed: July 28, 2021
    Publication date: August 24, 2023
    Applicant: LUMILEDS LLC
    Inventor: Michael DECKERS
  • MULTI-COLOR FLASH WITH IMAGE POST-PROCESSING
    Publication number: 20230267629
    Abstract: Multi-color flash with image post-processing that uses a camera device with a multi-color flash and implements post-processing to generate images is described. In one aspect, the multi-color flash with image post-processing may be implemented by a controller configured to control a camera and flashes of at least two different colors. The controller may be configured to cause the camera to acquire a first image of a scene while the scene is being illuminated with the first flash but not the second flash, then cause the camera to acquire a second image of the scene while the scene is being illuminated with the second flash but not the first flash, and generate a final image of the scene in post-processing based on a combination of the first image and the second image.
    Type: Application
    Filed: February 24, 2023
    Publication date: August 24, 2023
    Applicant: LUMILEDS LLC
    Inventors: Charles André Schrama, Nicola Bettina Pfeffer, Arjen Gerben Van der Sijde
  • LED BULB AND METHOD OF MANUFACTURE
    Publication number: 20230265979
    Abstract: An LED bulb includes a center ring, a burner and an elastic component. The center ring includes a central opening, a first flat rim extending along a first part of an outer edge of the central opening, and a first notch cut-out beyond the central opening at an end of the first flat rim. The burner is disposed at least in part in the central opening and includes a first pin that has a first flat side face. The elastic component is configured to press the first flat rim of the center ring against the first flat side face of the first pin of the burner.
    Type: Application
    Filed: July 9, 2021
    Publication date: August 24, 2023
    Applicant: LUMILEDS LLC
    Inventors: Shengjin-Sj CHEN, Gao Jie YU, Qiao SHEN, Guang Hu TANG
  • LED module, LED module and reflector arrangement, and vehicle headlamp
    Patent number: 11732865
    Abstract: An LED module includes a heat sink. The heat sink has a mounting surface that defines, with respect to ambient light incident thereon, one main direction of a beam perpendicular to the mounting surface and secondary directions of the beam inclined to the main direction of the beam at angles having absolute values smaller than or equal to 90 degrees. The heat sink also has a reflection surface oriented such that, with respect to the ambient light incident on thereon, a main direction of the beam of the reflection surface is perpendicular to the reflection surface and points in a direction included in the angle range determined by the main direction of the beam of the mounting surface and the secondary directions of the beam of the mounting surface. The LED module further includes an LED light source on the mounting face and pigments on the reflection surface.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: August 22, 2023
    Assignee: Lumileds LLC
    Inventors: Thorsten Lenzen, Joseph Hendrik Anna Maria Jacobs, Matthias Holtrup, Marc Droegeler, Frank Giese
  • Light emitting diode devices with current spreading layer
    Patent number: 11735695
    Abstract: 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 current spreading layer is on the P-type layer, the current spreading layer having a first portion and a second portion; a hard mask layer above the second portion of the current spreading layer, the hard mask layer comprising sidewalls defining a hard mask opening; a liner layer conformally-deposited in the hard mask opening above the first portion of the current spreading layer and on the sidewalls of the hard mask layer; a P-metal material plug on the liner layer; a passivation layer on the hard mask layer; and an under bump metallization layer on the passivation layer.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: August 22, 2023
    Assignee: Lumileds LLC
    Inventors: Erik William Young, Rajat Sharma, Dennis Scott
  • Micro light emitting devices
    Patent number: 11735691
    Abstract: Techniques, devices, and systems are disclosed and include LEDs with a first flat region, at a first height from an LED base and including a plurality of epitaxial layers including a first n-layer, a first active layer, and a first p-layer. A second flat region is provided, at a second height from the LED base and parallel to the first flat region, and includes at least a second n-layer. A sloped sidewall connecting the first flat region and the second flat region is provided and includes at least a third n-layer, the first n-layer being thicker than at least a portion of third n-layer. A p-contact is formed on the first p-layer and an n-contact formed on the second n-layer.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: August 22, 2023
    Assignee: Lumileds LLC
    Inventors: Costas Dimitropoulos, Sungsoo Yi, John Edward Epler, Byung-Kwon Han
  • LED ARRAY WITH METALENS FOR ADAPTIVE LIGHTING
    Publication number: 20230258316
    Abstract: An adaptive lighting system comprises an array of independently controllable LEDs, and a metalens positioned to collimate, focus, or otherwise redirect light emitted by the array of LEDs. The adaptive lighting system may optionally include a pre-collimator positioned in the optical path between the array of LEDs and the metalens.
    Type: Application
    Filed: April 13, 2023
    Publication date: August 17, 2023
    Applicant: Lumileds LLC
    Inventors: Venkata Ananth TAMMA, Toni LOPEZ, Nicola Bettina PFEFFER, Marcel Rene BOHMER
  • Nanostructured meta-materials and meta-surfaces to collimate light emissions from LEDs
    Patent number: 11726308
    Abstract: A system, method and device for collimating the output of a light emitting diode (LED) are disclosed. The system, method and device include an LED substrate including a top surface from which the light is emitted, and an array of subwavelength scattering antennas positioned within the emitted light path, the array of subwavelength scattering antennas configured to select directions of scatter of the LED emitted light to provide collimated light output from the device. The array may be aligned perpendicular to the plane of propagation of the light emitted from the LED and may be positioned adjacent to the top surface. The array may be at least partially, or completely, positioned within the LED substrate. The array may be spaced a distance from the top surface and the spacing may be achieved using a dielectric spacer adjacent to the top surface. The array may be positioned within the dielectric spacer.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: August 15, 2023
    Assignee: Lumileds LLC
    Inventor: Venkata Ananth Tamma
  • Phosphor with light barriers
    Patent number: 11725802
    Abstract: A device including a phosphor layer having a plurality of holes or pockets arranged within the phosphor layer to reduce lateral light transmission. The phosphor layer can be sized and positioned to extend over a plurality of LED emitter pixels.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: August 15, 2023
    Assignee: Lumileds LLC
    Inventors: Kentaro Shimizu, Venkata Ananth Tamma, Hisashi Masui
  • CERAMIC CARRIER AND BUILD UP CARRIER FOR LIGHT-EMITTING DIODE (LED) ARRAY
    Publication number: 20230253365
    Abstract: Circuit boards, LED lighting systems and methods of manufacture are described. A circuit board includes a ceramic carrier and a body on the ceramic carrier. The body includes dielectric layers and slots formed completely through a thickness of the dielectric layers. The slots are filled with a dielectric material. A conductive pad is provided on a surface of each of the slots opposite the ceramic carrier.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 10, 2023
    Applicant: LUMILEDS LLC
    Inventors: Loon-Kwang TAN, Tze Yang HIN
  • WAVELENGTH CONVERTING LAYER PATTERNING FOR LED ARRAYS
    Publication number: 20230253532
    Abstract: A method includes depositing a layer comprising a photoinitiator and a curable material onto a surface and applying a nanoimprint mold on the layer of curable material to form a mesh comprising intersecting walls defining cavities. After applying the nanoimprint mold, the mesh is illuminated with light causing decarboxylation of the photoinitator to initiate curing of the curable material. After curing the curable material, the nanoimprint mold is removed and a wavelength converting material is deposited in the cavities to form an array of wavelength converting pixels.
    Type: Application
    Filed: April 7, 2023
    Publication date: August 10, 2023
    Applicant: Lumileds LLC
    Inventors: Danielle Russell Chamberlin, Erik ROELING, Daniel Bernardo ROITMAN, Kentaro SHIMIZU
  • VAPOR-PHASE CURING CATALYSIS AND PASSIVATION OF SILOXANE RESINS IN LED APPLICATIONS
    Publication number: 20230250235
    Abstract: The present invention encompasses materials and methods for catalyzing the cross-linking and curing of siloxane polymers. In particular, the present disclosure provides materials, methods, and conditions for vapor phase catalysis for curing organosiloxane polymers and resins, including resin linear organosiloxane block copolymers, as well as the incorporation of those methods into processes for making light emitting devices, including light emitting diodes.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 10, 2023
    Applicant: LUMILEDS LLC
    Inventors: Daniel B. ROITMAN, Danielle R. CHAMBERLIN, David B. ROBERTS
  • MONOLITHIC MULTI-COLOR MATRIX EMITTER WITH PATTERNED PHOSPHOR LAYER
    Publication number: 20230253440
    Abstract: A lighting device is disclosed that includes a plurality of light emitting diodes arranged in an array, a plurality of trenches disposed between and optically isolating the light emitting diodes, and a patterned converter layer disposed over an array surface formed by light emitting surfaces of the light emitting diodes and upper surfaces of the trenches, the patterned converter layers including a first region having a first converter and a second region having a second converter different from the first converter, the first region and second region disposed over different areas of the array surface.
    Type: Application
    Filed: April 5, 2023
    Publication date: August 10, 2023
    Applicant: Lumileds LLC
    Inventors: Toni Lopez, Marcel Rene Bohmer
  • LED RETROFIT LAMP FOR AN AUTOMOTIVE LIGHTING SYSTEM AND METHOD OF MANUFACTURE
    Publication number: 20230250931
    Abstract: A light-emitting diode (LED) retrofit lamp includes a lamp body, an LED light source, an attachment ring and at least one fixing element. The lamp body has at least one opening. The elastic element is coupled to the lamp body at a first end. The LED light source is coupled to the lamp body at a second end opposite the first end. The attachment ring includes a first wavelike axial end face and a second axial end face opposite the first wavelike axial end face. The first wavelike axial end face includes a plurality of wave troughs and wave crests. The second axial end face abuts the elastic element. The at least one fixing element is disposed through at least one of the at least one opening in the lamp body and at least one of the wave troughs of the first wavelike axial end face of the attachment ring.
    Type: Application
    Filed: July 6, 2021
    Publication date: August 10, 2023
    Applicant: LUMILEDS LLC
    Inventor: Juergen Mertens
  • Circuit board for LED retrofit lamp
    Patent number: 11719391
    Abstract: A circuit board, a light-emitting diode (LED) retrofit lamp for use with the circuit board and a method of manufacturing an LED retrofit lamp are described herein. A circuit board includes a body part and two longitudinal fingers symmetrically extending from the body part in a longitudinal direction of the LED retrofit lamp.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: August 8, 2023
    Assignee: Lumileds LLC
    Inventors: Markus Petter, Jürgen Mertens
  • Driving video recorder for automotive and having a fan
    Patent number: 11720001
    Abstract: The present disclosure provides a driving video recorder for an automotive, which includes: a housing having a side wall, a top wall with an air outlet, and a bottom wall with an air inlet; a first electric fan arranged on the bottom wall above the air inlet and in a vertical middle plane of the housing for directing outside air into the housing; two sets of lenses for image capturing arranged at the side wall and positioned symmetrically on both sides of the vertical middle plane of the housing; and heat generating electrical components provided within the housing. The driving video recorder according to the present disclosure has a symmetrically distributed lens structure ensuring system stability, reliability, and enhanced functionality.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 8, 2023
    Assignee: Lumileds LLC
    Inventors: Shichun Liu, Chao Shang, Pei Yang, Xuejun Zhang, Huihua Chen, Chuanwen Jiang
  • Method of bonding a semiconductor device to a support substrate
    Patent number: 11721788
    Abstract: A method according to embodiments of the invention includes providing a wafer of semiconductor devices grown on a growth substrate. The wafer of semiconductor devices has a first surface and a second surface opposite the first surface. The second surface is a surface of the growth substrate. The method further includes bonding the first surface to a first wafer and bonding the second surface to a second wafer. In some embodiments, the first and second wafer each have a different coefficient of thermal expansion than the growth substrate. In some embodiments, the second wafer may compensate for stress introduced to the wafer of semiconductor devices by the first wafer.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: August 8, 2023
    Assignee: Lumileds LLC
    Inventors: Quanbo Zou, Salman Akram, Jerome Chandra Bhat
  • High speed image refresh system
    Patent number: 11723123
    Abstract: A LED controller for an LED pixel array includes an image frame buffer to receive image data and a standby image buffer connected to the image frame buffer to hold a standby image. A command and control module connected is configured to substitute the standby image in the standby image buffer for the image in the image frame buffer when image data is unavailable.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: August 8, 2023
    Assignee: Lumileds LLC
    Inventors: Ronald Johannes Bonne, Udo Karbowski
  • System for optical imaging comprising matched spectral filters
    Patent number: 11714218
    Abstract: Systems, methods and devices are for optical imaging are described. A system includes a light source and a light detection unit. The light source includes a light-emitting device and a first spectral filter opposite the light emitting device. The first spectral filter includes at least one dielectric filter and has a first angular dependence of a transmission passband. The light source further includes at least one reflector adjacent side surfaces of the light emitting device. The light detection unit includes an optical sensor and a second spectral filter opposite the optical sensor. The second spatial filter has a second angular dependence of a transmission passband that is matched to the first angular dependence.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: August 1, 2023
    Assignee: Lumileds LLC
    Inventors: Rob Jacques Paul Engelen, Varun Dev Kakkar