Intellectual Properties

IP, Reports & Roadmaps | Apr 29, 2017
Intelligent drive circuit for a light emitting diode (LED) light engine
Intelligent drive circuit for a light emitting diode (LED) light engine A controller for controlling a light emitting diode (LED) light engine. The controller includes a temperature sensor configured to sensor temperature at the LED light engine. A current sensor senses a drive current of the LED light engine. A voltage differential sensor senses a voltage differential across LEDs of the LED light engine. A timer monitors a time of operation of the LED light engine. Further, a control device controls the drive current to the LED light engine based on the sensed temperature, the sensed drive current, the sensed voltage differential, and the monitored time of operation. Further, the control device outputs an indication of intensity degradation of an LED, and if the intensity degradation exceeds a predetermined threshold the control can output an indication of such to a user, so that the user can be apprised that the LED needs to be changed. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Light emitting diodes packaged for high temperature operation
Light emitting diodes packaged for high temperature operation In accordance with the invention, an LED packaged for high temperature operation comprises a metal base including an underlying thermal connection pad and a pair of electrical connection pads, an overlying ceramic layer, and a LED die mounted overlying the metal base. The LED is thermally coupled through the metal base to the thermal connection pad, and the electrodes are electrically connected to the underlying electrical connection pads. A low thermal resistance insulating layer can electrically insulate other areas of die from the base while permitting heat passage. Heat flow can be enhanced by thermal vias to the thermal connector pad. Ceramic layers formed overlying the base can add circuitry and assist in distributing emitted light. The novel package can operate at temperatures as high as 250.degree. C. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Color Kinetics and ARRI announce OEM agreement: ARRI adopts Color Kinetics' technology to enter intelligent LED lighting market
Boston, MA, USA and Munich, Germany, Color Kinetics Incorporated (NASDAQ: CLRK) and ARRI Inc. today announced an agreement through which ARRI, one of the world's largest manufacturers of motion picture equipment, will use Color Kinetics' technology and intellectual property to develop a line of LED-based studio lighting products. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
BridgeLux files lawsuit against Cree for patent infringement
Sunnyvale, California, USA, BridgeLux, Inc., a leading supplier of energy saving LED chips to high-volume solid state lighting market segments, today announced it has filed a motion to dismiss the lawsuit filed against it by Cree, Inc. and Boston University on September 12, 2006 alleging infringement of US Patent Numbers 6,657,236 and 5,686,738. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Light emitting diode package with protective function against electrostatic discharge
Light emitting diode package with protective function against electrostatic discharge The present invention provides an LED package having an MEMS switch operated by electrostatic force, capable of continuously protecting an LED from excessive current due to electrostatic discharge. The invention includes a submount with first and second electrode patterns formed thereon; an LED mounted on the submount, having an n-electrode electrically connected to the first electrode pattern and a p-electrode electrically connected to the second electrode pattern; and an MEMS switch including a first conductive plate and a second conductive plate bent to have an area over and vertically apart from the first conductive plate, wherein the first and second conductive plates are electrically connected to the first and second electrode patterns, and the second conductive plate comes in contact with the first conductive plate by electrostatic force upon being applied with voltage higher than a predetermined level of voltage. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Color Kinetics and Osram Sylvania announce licensing agreement
Boston and Danvers, Massachusetts USA, Color Kinetics Incorporated and Osram Sylvania today announced an agreement whereby Osram Sylvania will license Color Kinetics' patents for a product to be marketed by Gotham Architectural Downlighting, an Acuity Brands company. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Beadlight wins patent for diffusion system
UK - Beadlight Ltd, an innovator in LED diffusion and video effect technologies, has announced the grant of Patent No. GB2392488 by the UK Patent Office entitled 'Illumination device'. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
BridgeLux responds to Cree lawsuit
Sunnyvale, California, USA, BridgeLux, Inc., a leading supplier of energy saving LED chips to high-volume solid state lighting market segments, confirmed that on September 12, 2006, it was served in a lawsuit filed by Cree, Inc. and Boston University alleging infringement of US Patent Numbers 6,657,236 and 5,686,738. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Competitive Technologies to commercialize optical technology for LED lighting market
Competitive Technologies, Inc. today announced that it has signed an exclusive, worldwide service and representation agreement with Illumitex, LLC to license optical technology for the light emitting diode ("LED") industry. The technology is a fundamental and enabling primary optical device that significantly improves the effectiveness of High Brightness LEDs ("HBLEDs"). Read more »
IP, Reports & Roadmaps | Apr 29, 2017
Cree files lawsuit against bridgeLux for patent infringement
DURHAM, NC, Cree, Inc. (Nasdaq: CREE), a leader in LED solid-state lighting components, today announced that it has filed suit against BridgeLux, Inc. (formerly eLite Optoelectronics) for infringement of U.S. Patent Nos. 6,657,236 (“the ‘236 patent”) and 5,686,738 (“the ‘738 patent”). Read more »
IP, Reports & Roadmaps | Apr 29, 2017
External extraction light emitting diode based upon crystallographic faceted surfaces
External extraction light emitting diode based upon crystallographic faceted surfaces A light emitting diode is disclosed that includes a support structure and a Group III nitride light emitting active structure mesa on the support structure. The mesa has its sidewalls along an indexed crystal plane of the Group III nitride. A method of forming the diode is also disclosed that includes the steps of removing a substrate from a Group III nitride light emitting structure that includes a sub-mount structure on the Group III nitride light emitting structure opposite the substrate, and thereafter etching the surface of the Group III nitride from which the substrate has been removed with an anisotropic etch to develop crystal facets on the surface in which the facets are along an index plane of the Group III nitride. The method can also include etching the light emitting structure with an anisotropic etch to form a mesa with edges along an index plane of the Group III nitride. Read more »
IP, Reports & Roadmaps | Apr 29, 2017
High efficiency light emitting diode (LED) with optimized photonic crystal extractor
High efficiency light emitting diode (LED) with optimized photonic crystal extractor A high efficiency, and possibly highly directional, light emitting diode (LED) with an optimized photonic crystal extractor. The LED is comprised of a substrate, a buffer layer grown on the substrate (if needed), an active layer including emitting species, one or more optical confinement layers that tailor the structure of the guided modes in the LED, and one or more diffraction gratings, wherein the diffraction gratings are two-dimensional photonic crystal extractors. The substrate may be removed and metal layers may be deposited on the buffer layer, photonic crystal and active layer, wherein the metal layers may function as a mirror, an electrical contact, and/or an efficient diffraction grating. Read more »
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