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| Number | Title | Issue Date |
| 8283868 | LED light engine An integrated Light Emitting Diode (LED) device including multiple LEDs connected to a circuit board, integrated circuit (IC) drivers connected to the circuit board, and a first alternating current (AC) terminal and a second AC terminal connected to the circuit boar... | 10/09/2012 |
| 7535182 | Flat panel display device having thermostat A flat panel display device includes an electron emission substrate; an image forming substrate spaced apart from the electron emission substrate; a spacer disposed between the electron emission substrate and the image forming substrate; a detector coupled to the el... | 05/19/2009 |
| 7327088 | Magnetron In a magnetron having a body 1 defining an anode 2 divided into resonant cavities 4 by vanes 3 and having a coaxial cathode 5, r.f. energy produced when a magnetic field is applied parallel to the axis of the anode is launched alon... | 02/05/2008 |
| 7322718 | Multichip LED lighting device In a module socket, a connecter and a connector are connected by wiring, and three LED modules are connected in parallel with respect to a constant voltage circuit unit via the wiring. Each module has a constant current circuit unit and an LED mounting unit. The con... | 01/29/2008 |
| 7208881 | LED strobe light An LED light that includes an LED light source. A thermoelectric device is configured to maintain the LED light source within a predetermined temperature range. A controller provides a pulse signal to the LED light source, so that the LED light can particularly oper... | 04/24/2007 |
| 7204612 | Heat dissipation structure for ellipsoidal lamps A heat dissipation structure for an ellipsoidal lamp to provide an improved cooling effect for the ellipsoidal lamp has a redesigned shape and installing location for the blower duct that extends the outlet thereof to the edge of effective light beam zone of the ell... | 04/17/2007 |
| 7185424 | Electronic component mounting method and apparatus All images of a plurality of sucked and held electronic components are picked up, sucked and held states of the electronic components are successively recognized by their respective images in an order of placing the electronic components onto a circuit board, and th... | 03/06/2007 |
| 7176666 | DC regulated power supply comprising A DC regulated power supply includes: a power transistor provided for each output of a plurality of systems; a control IC, which compares a feedback value of an output voltage and a reference voltage from a reference voltage source, and controls a base current of th... | 02/13/2007 |
| 7164102 | Self heating thermal protector A self heating thermal protector located in close proximity to a remotely located incandescent light fixture for controlling the flow of current to the lighting fixture by measuring the rate of heat flow from a dedicated heat source. Current is permitted to flow to ... | 01/16/2007 |
| 7157865 | Circuit for driving cold cathode tubes and external electrode fluorescent lamps A circuit for driving cold cathode tubes and external electrode fluorescent lamps uses only 19–26 watts of power. A steady square wave oscillator generator sets a running frequency for the circuit. A high voltage inductor or high voltage/high frequency transformer... | 01/02/2007 |
| 7052143 | Projection device having blower and/or lamp with feedback control In one example, a method for controlling temperature in a projection device, comprises measuring a plurality of temperatures in the projection device; averaging said plurality of temperatures to determine an averaged temperature; determining an error between a set-p... | 05/30/2006 |
| 7038390 | Lamp control system A method and apparatus are provided for reducing the stable lamp standby power to the order of 5% of nominal full power in order to reduce the effects of heat from the lamp on a substrate during production downtime. In particular, a power controller changes the oper... | 05/02/2006 |
| 7034464 | Generating light from electromagnetic energy A device that converts non-visible electromagnetic energy into light. The device includes a cylindrical electromagnetic resonator with a central through hole, a dielectric (preferably ceramic) material surrounded by symmetrically displaced through holes surrounding ... | 04/25/2006 |
| 7009329 | Thermally optimized cold cathode heater Systems and methods for providing a thermally optimized cold cathode heater in which a heater wire is disposed in a plurality of turns are shown. Turns of the plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding... | 03/07/2006 |
| 6982528 | Thermal protection for lamp ballasts The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while ... | 01/03/2006 |
| 6972523 | Metal halide lamp control device with linear control power transducer A metal halide lamp control device with linear control power transducer, having application in an automobile lamp provided with metal halide lamp illumination. A linear control power transducer is utilized to replace a traditional digital control power transducer. T... | 12/06/2005 |
| 6933675 | Apparatus for blocking ambient air of electrodeless lighting system and waveguide thereof An apparatus for blocking ambient air of an electrodeless lighting system comprises: a waveguide including a shaft hole so that a bulb shaft can be penetrated therethrough; a bulb motor mounted on a rear side of the waveguide and connected to a bulb, which is locate... | 08/23/2005 |
| 6911788 | Electronic ballast of high power factor for compact fluorescent lamp Disclosed is an electronic ballast of a high power factor for a compact fluorescent lamp (CFL) capable of implementing a high power factor and turning on lamps of different capacitances (3W-26W), or selectively turning on two lamps having the same capacitance or one... | 06/28/2005 |
| 6784619 | Electrodeless lighting system An electrodeless lighting system which is emitting light using microwave generated in a magnetron comprises: a main case including a waveguide through which microwave is transmitted, a resonator coupled to an exit of the waveguide, and a bulb located in the resonato... | 08/31/2004 |
| 6747413 | Display cold spot temperature regulator An apparatus and method is disclosed for regulating the cold spot temperature of a light emitting enclosure. A cold spot regulation system defines and controls the temperature of the cold spot. The cold spot regulation system includes an interface housing secured to... | 06/08/2004 |
| 6731074 | Electrode-less lamp equipment An electrode-less lamp equipment with higher luminance by higher lamp-cooling efficiency wherein the airflow generated by the blower 9 goes through the ventilation hole 12 and spouts out from the open end of the lamp-cooling nozzle 15 and cools ... | 05/04/2004 |
| 6670587 | Self heating thermal protector The present invention is a self heating thermal protector located in close proximity to an incandescent light fixture for controlling the flow of current to the associated lighting fixture by measuring the rate of heat flow from a dedicated heat source. C... | 12/30/2003 |
| 6445138 | Microwave powered lamp with improved cooling system A air provided microwave powered lamp (100) and an assembly (300) of a microwave powered lamp. A microwave, powered lamp includes a housing (22) containing a water cooled magnetron (110), the water cooled magnetron providing microwaves to a microwave exci... | 09/03/2002 |
| 6441558 | White LED luminary light control system An LED luminary system for providing power to LED light sources to generate a desired light color comprises a power supply stage configured to provide a DC current signal. A light mixing circuit is coupled to said power supply stage and includes a plurali... | 08/27/2002 |
| 6420833 | Switching device with improved over-current protection In an electronic ballast comprising a fusistor for switching off the ballast if the mains supply current becomes too high, an NTC is arranged between the mains supply lines. A very reliable functioning of the fusistor is obtained thereby.... | 07/16/2002 |
| 6411042 | Display cold spot temperature regulator An apparatus and method is disclosed for regulating the cold spot temperature of a light emitting enclosure. A cold spot regulation system defines and controls the temperature of the cold spot. The cold spot regulation system includes an interface housing... | 06/25/2002 |
| 6352356 | Illuminating device for a display An electric heating element (4) designed for heating a fluorescent lamp (2) of an illuminating device for a display is arranged on a printed circuit board (5) at only a small spacing from the flourescent lamp (2). As a result, the fluorescent lamp (2) can... | 03/05/2002 |
| 6320318 | Display device with temperature stabilization The present invention relates to an image display system comprising a display panel (1) having at least one channel (35, 37, 39) comprising an ionizable gas mixture (55) including at least a basic gas and an additional gas. The walls of the channel are pr... | 11/20/2001 |
| 6310439 | Distributed parallel semiconductor device spaced for improved thermal distribution and having reduced power dissipation A single triac on a heat sink is replaced by a plurality of lower rated current, parallel connected triacs for carrying the same total current as the single triac. The plural devices are spaced apart as far as possible, within the confines of an insulatio... | 10/30/2001 |
| 6268701 | Fluorescent light ballast convective cooling means A flourescent light is provided with an integral fan for cooling purposes. The air is filtered by a small replaceable filter that keeps dust and dirt out of the fixture. The fan is wired in parallel with the light fixture such that the fan comes on automa... | 07/31/2001 |
| 6246176 | Tipover-safe means for lamp A safety switch for a lamp is disclosed. The safety switch comprises a pair of electrodes having cylindrical shapes. Each electrode comprises an internal face with a conical cavity therein. The electrodes are arranged so that they are adjacently mounted w... | 06/12/2001 |
| 6188185 | Process for manufacturing a neon tube, and related low temperature lighting system A lighting system is provided which is utilized in lower temperature environments, such as refrigeration units and the like which uses specially constructed neon tubes to reduce the size of the lighting system while emitting sufficient white light to adeq... | 02/13/2001 |
| 6163114 | Starting circuit for low-pressure discharge lamp In an operating circuit for a low-pressure discharge lamp, the lamp current is controlled depending on the lamp temperature or the luminous flux.... | 12/19/2000 |
| 6157135 | Halogen lamp with high temperature sensing device A lighting device including a temperature sensing device for controlling the operation of the light emitting device. The lighting device includes a housing, a reflector coupled to the housing, a bulb received in the housing, the bulb being connected to a ... | 12/05/2000 |
| 6144160 | Lamp with a temperature-controlled automatically protecting circuit A lamp with a temperature-controlled automatically protecting circuit which includes a temperature induction circuit and a sampling circuit with its input end to connect with an output end of the temperature induction circuit, wherein the temperature cont... | 11/07/2000 |
| 6133695 | Lamp with safety features A lamp incorporating one or more safety features for reducing the risk of fire or heat damage associated with improper operation of the lamp. One safety feature can be an automatic safety switch for terminating power to the lamp when the lamp is not in a ... | 10/17/2000 |
| 5998934 | Microwave-excited discharge lamp apparatus A microwave-excited discharge lamp apparatus of the present invention has a translucent blow guide 6 arranged around a microwave-excited discharge lamp 4. Thereby, even when the microwave-excited discharge lamp 4 is reduced in size, the microwave-excited ... | 12/07/1999 |
| 5962990 | Control unit for rapidly starting the illumination of a high-pressure gas-discharge lamp A d.c. voltage source delivers the voltage at its output terminals. This voltage is converted to a higher voltage level by a d.c./d.c. converter. This higher voltage level forms the input voltage to a controlled power-supply circuit. From this, the power-... | 10/05/1999 |
| 5909085 | Hybrid luminosity control system for a fluorescent lamp A luminosity control system (10) for a fluorescent lamp (12) that has a glass enclosure (18) and a pair of lead wires (14) at each end of the glass enclosure is provided. A filament (16) is electrically coupled to each pair of lead wires. An amalgam (22) ... | 06/01/1999 |
| 5863111 | Lamp with safety features A lamp with improved safety features to avoid fire and burn hazards. The lamp includes an electrical circuit having a thermostat connected in series with the bulb of the lamp. The thermostat is mounted in close proximity to the lamp's bulb and, upon the a... | 01/26/1999 |
