Intellectual Properties

IP, Reports & Roadmaps | Aug 03, 2010
Dimming Control Circuit for Light-Emitting Diodes
Dimming Control Circuit for Light-Emitting Diodes A dimming control circuit generates a dimming control signal for determining brightness of at least one light-emitting diode. The dimming control signal has a plurality of bright-dark cycles, each of which consists of a bright phase and a dark phase. The bright phase starts with an adaptive rising portion. The adaptive rising portion restricts the brightness of the at least one light-emitting diode to increase gradually from zero. Read more »
IP, Reports & Roadmaps | Aug 03, 2010
Led luminaire and arrangement comprising a luminaire body and an led operating device
Led luminaire and arrangement comprising a luminaire body and an led operating device The invention discloses an LED luminaire, in the case of which an LED module is applied to the luminaire body such that the height of the luminaire body and the LED module is ≦8 mm and the luminaire body at least partially forms the heat sink for the LED module. In this case, LED modules having power ratings of ≧3 watts are used. LED operating devices can be used for voltage supply purposes which form an outer face section of an arrangement comprising a luminaire body and an LED operating device, the total height of the luminaire body and LED operating device being ≦10 mm, and the LED operating device preferably being cooled via the luminaire body. Read more »
IP, Reports & Roadmaps | Aug 03, 2010
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 | Aug 03, 2010
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 | Aug 03, 2010
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 | Aug 03, 2010
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 | Aug 03, 2010
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 | Aug 03, 2010
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 | Aug 03, 2010
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 »
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