Patents Assigned to Lumileds LLC
  • LIGHT-EMITTING DEVICE WITH CONFIGURABLE SPATIAL DISTRIBUTION OF EMISSION INTENSITY
    Publication number: 20210358997
    Abstract: A semiconductor light-emitting device includes a junction between doped semiconductor layers, a first set of multiple independent contacts connected to a first doped layer and a second set of one or more contacts connected to the second doped layer. Multiple conductive vias connect the independent contacts to the first doped layer, enabling differing corresponding via currents to be applied to the first doped layer through the vias independent of one another. A spatial distribution of via currents among the multiple vias can be selected to yield a corresponding spatial distribution of emission intensity. Alteration of the via current distribution results in corresponding alteration of the emission intensity distribution; such alterations can be implemented dynamically. Multiple devices can be arranged as a light-emitting array.
    Type: Application
    Filed: January 6, 2021
    Publication date: November 18, 2021
    Applicant: LUMILEDS LLC
    Inventors: Toni LOPEZ, Floris CROMPVOETS
  • NANOSTRUCTURED META-MATERIALS AND META-SURFACES TO COLLIMATE LIGHT EMISSIONS FROM LEDS
    Publication number: 20210356726
    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: Application
    Filed: May 3, 2021
    Publication date: November 18, 2021
    Applicant: LUMILEDS LLC
    Inventor: Venkata Ananth Tamma
  • Carrier for lighting modules and lighting device
    Patent number: 11175019
    Abstract: The invention refers to a carrier for at least one lighting module, the carrier comprising: at least one mounting portion for receiving the at least one lighting module, wherein the carrier has a triangular cross section at least in sections with the at least one mounting portion being arranged on an edge of the triangular cross section; and a heat sink body portion arranged adjacent to the at least one mounting portion, wherein the heat sink body portion protrudes sidewards from the at least one mounting portion. The invention further relates to a lighting device and a method for producing such lighting device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: November 16, 2021
    Assignee: Lumileds LLC
    Inventors: Florent Grégoire Monestier, Michael Deckers
  • Optical coupling layer to improve output flux in LEDs
    Patent number: 11177420
    Abstract: An optical coupling structure is disposed on a light output surface of a semiconductor LED to facilitate coupling of light emitted by the semiconductor LED through the light output surface. 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 LED.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: November 16, 2021
    Assignee: Lumileds LLC
    Inventors: Antonio Lopez-Julia, Jens Meyer
  • RETROFIT LIGHTING DEVICE WITH IMPROVED THERMAL PROPERTIES
    Publication number: 20210348738
    Abstract: A lighting device (1) is provided comprising a support structure (13) extending from a heat sink (10) and comprising a mounting section (14) with a central mounting face (14.2), first and second lateral mounting faces (14.1, 14.3), and at least one heat dissipation member (18a, 18b) extending from an outer face (11a.1, 11a.3) of the support structure (13) comprising a respective one of the first and the second lateral mounting faces (14.1, 14.2), the at least one first heat dissipation member (18a, 18b) comprising an inclined surface (19a, 19b) which is inclined with respect to the respective one of the first and the second lateral mounting faces (14.1, 14.3) such that a thickness of the at least one first heat dissipation member (18a, 18b) increases along a direction (40) away from the mounting section (14).
    Type: Application
    Filed: April 30, 2021
    Publication date: November 11, 2021
    Applicant: Lumileds LLC
    Inventors: Matthias EPMEIER, Bernd SCHOENFELDER, Marcus Jozef Henricus KESSELS
  • Flexible LED lighting strip with slanted LEDs
    Patent number: 11168862
    Abstract: The invention describes a flexible lighting strip for use in a vehicle signaling light. The flexible lighting strip comprises a multitude of light-emitting diodes. The flexible lighting strip is arranged to be bended around at least two, more preferably three linear independent axes. Light-emitting diodes of at least a first group of the light-emitting diodes are inclined with respect to a longitudinal extension of the flexible lighting strip such that surface normals of light exit surfaces of the first group of the light-emitting diodes enclose a first angle of more than 0° with corresponding surface normals of a light emission surface of the flexible lighting strip. The invention further relates to a light assembly comprising such a flexible lighting strip. The invention finally relates to a vehicle signaling light comprising such a vehicle light assembly.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: November 9, 2021
    Assignee: LUMILEDS LLC
    Inventors: Floris Maria Hermansz Crompvoets, Christian Kleijnen
  • Automotive lighting system for vehicles
    Patent number: 11168859
    Abstract: The present invention relates to the field of automotive lighting, and in particular to an automotive lighting system for a vehicle. The automotive lighting system for a vehicle comprises: a plurality of light sources; a plurality of primary optics, each being a reflector, arranged in a matrix and configured to receive and redirect light from the plurality of light sources; and a secondary optics configured to receive the redirected light from the plurality of primary optics and project the received light in front of the vehicle. Further, each light source is disposed in a focal plane of a corresponding one of the plurality of primary optics, and at least one of the plurality of primary optics is disposed in a focal plane of the secondary optics.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: November 9, 2021
    Assignee: LUMILEDS LLC
    Inventors: Kang Lu, Ping Wu
  • LED package with integrated features for gas or liquid cooling
    Patent number: 11171273
    Abstract: A device is provided that comprises a metallic substrate defining a plurality of openings, the openings having a first area. The openings form one or more heat dissipating elements having a second area. The device comprises a plurality of sites on a surface of the one or more heat dissipating elements. Each site is configured to receive a light emitting element. The device comprises a plurality of conductor elements having a third area. The conductor elements are physically separated from the one or more heat dissipating elements by the openings. The conductor elements are configured to enable electrical connections to the light emitting elements and are electrically isolated from the one or more heat dissipating elements.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventors: Axel Mehnert, Dusan Golubovic, Marcus Franciscus Donker, Hendrik Jan Eggink, Rene Van Honschooten, Theodoor Cornelis Treurniet
  • Shaped phosphor to reduce repeated reflections
    Patent number: 11171266
    Abstract: Pre-formed wavelength conversion elements are attached to light emitting elements and are shaped to reduce repeated occurrences of total internal reflection. The sides of the shaped elements may be sloped or otherwise shaped so as to introduce a change in the angle of incidence of reflected light upon the light extraction surface of the wavelength conversion element. The pre-formed wavelength conversion elements may be configured to extend over an array of light emitting elements, with features between the light emitting elements that are shaped to reduce repeated occurrences of total internal reflection.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventors: Clarisse Mazuir, Qingwei Mo, Mei-Ling Kuo, Lin Li, Oleg Borisovich Shchekin
  • Method of manufacturing an LED assembly
    Patent number: 11171275
    Abstract: A method of manufacturing an LED assembly is described. The method includes providing an LED package comprising one or more LEDs arranged in a support body and thermal and electrical contact regions on one or more surfaces of the support body. The method further includes providing a heatpipe and forming a thermal contact between a contact region of the LED package and a first end region of the heatpipe. An LED package, an LED assembly, and an LED lighting arrangement are also described.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventor: Petra Wellmeier
  • Holding collimator elements in a lighting arrangement
    Patent number: 11168848
    Abstract: A lighting arrangement includes a plurality of light sources in spaced arrangement. Collimator elements are arranged in front of the light sources. A holder with a plurality of spaced openings is provided to hold the collimator elements within the openings in such a way that the openings are arranged to contact the collimator elements from at least two opposed sides, In order to allow exact positioning and easy manufacturing, the holder comprises at least a first portion and a second portion such that at least some of the openings are formed between the first and the second portions.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventors: Juergen Mertens, Georg Henninger
  • Light emitting device having an optically pumped semiconductor wavelength converting element
    Patent number: 11171265
    Abstract: Embodiments of the invention include a semiconductor light emitting device capable of emitting first light having a first peak wavelength and a semiconductor wavelength converting element capable of absorbing the first light and emitting second light having a second peak wavelength. The semiconductor wavelength converting element is attached to a support and disposed in a path of light emitted by the semiconductor light emitting device. The semiconductor wavelength converting element is patterned to include at least two first regions of semiconductor wavelength converting material and at least one second region without semiconductor wavelength converting material disposed between the at least two first regions.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventors: Michael David Camras, Oleg Borisovich Shchekin, Rafael Ignacio Aldaz Granell, Patrick Nolan Grillot, Frank Michael Steranka
  • Dim-to-warm LED circuit
    Patent number: 11172558
    Abstract: Various embodiments include apparatuses and methods enabling a dim-to-warm circuit operation of an LED multi-colored array. In one example, an apparatus includes a hybrid driving-circuit coupled to the LED array and to a single control-device to receive an indication of a luminous flux desired from the LED array. A color temperature for the LED array is determined based on the desired luminous flux of the LED array. In various embodiments, the hybrid driving-circuit includes an analog current-division circuit to produce current for at least two LED current-driving sources and a multiplexer array coupled between the analog current-division circuit and the LED to provide periodically, for a predetermined amount of time, current from at least one of the at least two LED current-driving sources to at least two colors of the LED array. Other apparatuses and methods are described.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: November 9, 2021
    Assignee: Lumileds LLC
    Inventor: Yifeng Qiu
  • Modular LED string
    Patent number: 11162653
    Abstract: A modular LED string, an LED lighting assembly containing the LED string, and a method of manufacturing the lighting assembly are described. In various embodiments, the LED string contains LED module groups mounted on a carrier. Each module group has a series-connected row of LED modules, commencing with a first LED module followed by at least one inner LED module and terminated by a final LED module. Each main contact pad is electrically connected to a main supply track formed on the carrier and is arranged between neighbouring modules. Each secondary contact pad is electrically connected to a secondary supply track formed on the carrier and is arranged on either side of an inner module. An anode contact of each first module is electrically connected to the main supply track, and an anode contact of each remaining module is electrically connected to a secondary supply track.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: November 2, 2021
    Assignee: Lumileds LLC
    Inventors: Manuel Grave, Nikolai Timm
  • Large LED array with reduced data management
    Patent number: 11164287
    Abstract: A LED controller includes a power distribution module and an interface to an external data bus. An image frame buffer is connected to the interface to receive image data. A separate logic module is connected to the interface and configured to modify image frame buffer output signals sent to an LED pixel array connected to the image frame buffer. The LED pixel array can project light according to a pattern and intensity defined at least in part by the image held in the image frame buffer.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: November 2, 2021
    Assignee: Lumileds LLC
    Inventors: Ronald Bonne, Jyoti Kiron Bhardwaj
  • OPTICALLY TRANSPARENT ADHESION LAYER TO CONNECT NOBLE METALS TO OXIDES
    Publication number: 20210336091
    Abstract: A reflective layer for use in lighting devices and methods of forming the reflective layer are provided. The reflective layer may include a dielectric layer including one or more insulating materials. An intermediate layer may be formed on the dielectric layer. The intermediate layer may include one or more materials having a higher enthalpy of reaction than the one or more insulating materials. Because of the higher enthalpy of reaction, atoms of the one or more materials in the intermediate layer may form bonds with atoms of the one or more insulating materials. A metal layer may be formed on the intermediate layer to reflect light emitted from an active region of a light emitting diode (LED).
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Applicant: Lumileds LLC
    Inventor: Yue Chau KWAN
  • Fan out structure for light-emitting diode (LED) device and lighting system
    Patent number: 11156346
    Abstract: LED lighting systems and vehicle headlamp systems are described. An LED lighting 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 having a top surface, a bottom surface and side surfaces. First redistribution layers are provided on the top surface of the silicon backplane and the top surface of the substrate. Second redistribution layers are provided on the bottom surface of the silicon backplane and the bottom surface of the substrate. At least one via extends through the substrate between the first redistribution layers and the second redistribution layers and is filled with a metal material.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: October 26, 2021
    Assignee: Lumileds LLC
    Inventors: Tze Yang Hin, Anantharaman Vaidyanathan, Srini Banna, Ronald Johannes Bonne
  • Coated wavelength converting material for a light emitting device
    Patent number: 11155489
    Abstract: Embodiments of the invention include a transparent material such as glass including a metal such as bismuth, particles of luminescent material such as a nitride phosphor disposed in the transparent material, and a coating disposed over the particles of luminescent material. The coating is formed to prevent reaction between the particles of luminescent material and the metal. The coating may be silica.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 26, 2021
    Assignee: Lumileds LLC
    Inventors: Peter Josef Schmidt, Cas Groenendijk
  • LED package including converter confinement
    Patent number: 11158778
    Abstract: A light-emitting device is disclosed, including: a substrate; a light-emitting diode (LED) formed on a first surface of the substrate, the LED being arranged to emit primary light; a fence disposed on a second surface of the substrate, the fence including a plurality of walls arranged to define a cell; a light-converting structure disposed in the cell, the light-converting structure being arranged to convert at least a portion of the primary light to secondary light having a wavelength that is different from the wavelength of the primary light; and a reflective element formed on one or more outer surfaces of the walls of the fence, such that the reflective element and the light-converting structure are disposed on opposite sides of the walls of the fence.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: October 26, 2021
    Assignee: Lumileds LLC
    Inventors: Brendan Jude Moran, Lex Kosowsky
  • Lighting assembly and method for manufacturing a lighting assembly
    Patent number: 11158772
    Abstract: A lighting assembly is disclosed which includes a leadframe and at least one light-emitting diode (LED) element arranged on the leadframe. At least a portion of the leadframe is covered with a polyurethane coating arranged to electrically insulate the portion of the leadframe, and at least a portion of the polyurethane covered portion of the leadframe is further covered with a thermally conductive material. A method for manufacturing the lighting assembly is also disclosed.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: October 26, 2021
    Assignee: Lumileds LLC
    Inventors: Nan Chen, Hiu Tung Chu, Dong Pan, Paul Scott Martin, Tomonari Ishikawa