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| Number | Title | Issue Date |
| 8115395 | Self-dusting lamp device A self-dusting lamp device includes a housing, a heat-dissipating module, a lighting element and a controlling unit. The housing has an air inlet portion and an air outlet portion on the outer periphery thereof. The heat-dissipating module has a heat-dissipating fan... | 02/14/2012 |
| 8106592 | Method of driving a discharge lamp, driving arrangement, and projector system The invention describes a method of driving a discharge lamp (1), wherein a blackening value (N) is determined, which blackening value (N) represents a level of blackening of the interior of the lamp (1), and a recovery parameter (2, T) is calcu... | 01/31/2012 |
| 8022631 | Color control of light sources employing phosphors An illuminating device includes a light source including a lighting device, such as a solid state lighting device, which emits light, a phosphor material which converts at least a portion of the light emitted by the lighting device to light of a different wavelength... | 09/20/2011 |
| 7438420 | Display apparatus A display apparatus having a control unit which controls the light source temperature so that the temperature remains within a predetermined temperature range, a light modulation device for displaying images by receiving light emitted from the light source, and modu... | 10/21/2008 |
| 7372208 | Methods and apparatus for thermal management of fluorescent lamps An assembly for heating a fluorescent lamp (such as the lamp used in a flat panel display) includes a circuit card having a plurality of transistors each configured to produce heat disposed thereon. A thermally-conductive layer is disposed proximate to the plurality... | 05/13/2008 |
| 7335901 | Method of calibrating light delivery systems, light delivery systems and radiometer for use therewith A light delivery device (10) having a light source (12) and a variable aperture unit (18) is temporarily connected by a light guide (24; 24, 26) to a radiometer (38) for detecting irradiance of the delivered light. The light delive... | 02/26/2008 |
| 7298093 | Method and device for driving CCFL circuit A driving device for a CCFL circuit comprising at least one CCFL is provided. The driving device comprising at least one heating device controlling the temperature of the at least one CCFL, a power supply outputting a first voltage, and a switching device having a f... | 11/20/2007 |
| 7294979 | Light source module with temperature sensor A light source module includes a lamp assembly, at least one temperature sensor for monitoring a temperature of the lamp assembly, and a processor coupled to the temperature sensor and the lamp assembly, the processor being configured to operate the lamp assembly at... | 11/13/2007 |
| 7291982 | Method and apparatus for the closed loop and open loop control of filament heating for lamps An apparatus for the closed-loop and open-loop control of filament heating for a lamp, in particular for a fluorescent lamp, has a control loop into which a first filament (W1), an operational-parameter detection element (E), a heating controller (H) and a fi... | 11/06/2007 |
| 7284878 | Lumen regulating apparatus and process The present invention is a fluorescent light lumen regulating apparatus. More specifically, in one aspect, the present invention is a fluorescent lighting assembly for mounting at least one fluorescent lamp. In this aspect, the lighting assembly comprises a lamp hou... | 10/23/2007 |
| 7279840 | Electrodeless fluorescent lamp with controlled cold spot temperature An electrodeless lamp includes a bulbous lamp envelope enclosing an inert gas and a vaporizable metal fill, the lamp envelope having a reentrant cavity; an electromagnetic coupler positioned within the reentrant cavity; and a cold spot structure configured for low t... | 10/09/2007 |
| 7247994 | Methods and apparatuses for mounting a wireless network component to a fluorescent light The invention provides methods and apparatuses for mounting a wireless network component to a fluorescent light. The internal electronics of the wireless network component are contained within a housing. Attachment means are used to attach the housing to a fluoresce... | 07/24/2007 |
| 7221858 | Pulse-width modulation motor speed control circuit A PWM motor speed control circuit (10) includes a PWM signal generator (20), a driver integrated circuit (IC) (101) and a photocoupler (30) coupled between the PWM signal generator and the driver IC. The photocoupler receives an original ... | 05/22/2007 |
| 7199531 | Variable output single constant source light fixture A light fixture having a variable light output level using one constant voltage power source includes multiple individually computer controllable light sources. Multiple light fixtures may be networked and individually controlled. Additional accessory control device... | 04/03/2007 |
| 7164224 | Backlight having discharge tube, reflector and heat conduction member contacting discharge tube A display device includes a backlight having a discharge tube and a reflector. A heat conduction member is attached to the reflector in contact with the discharge tube, so that a part of the discharge tube is locally cooled by the heat conduction member. Liquid merc... | 01/16/2007 |
| 7119501 | Dynamic color mixing LED device A dynamic color mixing LED device that includes a plurality of light emitting diode units. Each light emitting diode unit includes e.g. a first LED of a first color (e.g. red) and a second LED of a second color (e.g. green). A third LED of a third color (e.g. blue c... | 10/10/2006 |
| 7116043 | Compact self-ballasted fluorescent lamp with improved rising characteristics A compact self-ballasted fluorescent lamp includes a double-spiral arc tube formed by winding a glass tube to its both ends around a spiral axis, and sealing electrodes each having a filament coil at the ends of the glass tube, and a holding member that has a closed... | 10/03/2006 |
| 7097556 | Power supply capable of dissipating heat from computer unit This invention relates to a power supply capable of dissipating heat from computer unit, for enhancing the heat source heat-dissipating effect within the computer unit, including: a blower for exhausting air provided in or above the power supply. The blower is provi... | 08/29/2006 |
| 7061173 | Amalgam-doped low mercury low-pressure UV irradiator A UV lamp unit is provided and comprises a lamp in the form of a mercury low pressure amalgam lamp that is provided with at least one amalgam deposit. A cladding tube surrounds the lamp in such a way that an air gap is provided between the lamp and the cladding tube... | 06/13/2006 |
| 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 |
| 7034467 | Controller for suppressing temperature of screen The present invention discloses a controller for suppressing the temperature of a screen in order to maintain the ambient temperature of the screen to the level of a predetermined standard temperature as to avoid the screen from being operated at abnormal temperatur... | 04/25/2006 |
| 7012376 | Fluorescent lamp lighting device A fluorescent lamp lighting device includes a fluorescent light bulb having an electrode filament and an electronic lighting circuit substrate for lighting the fluorescent light bulb, wherein a capacitor connected in parallel with the fluorescent light bulb, a posit... | 03/14/2006 |
| 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 |
| 6960759 | Light source device, image reading apparatus and image reading method A light source device which can prevent a large-sized structure of the device, a light source device which can improve assembling efficiency and maintainability of the device, and an image forming method and apparatus in which occurrence of moisture condensation can... | 11/01/2005 |
| 6956490 | Projector with consumable component having memory device A system includes a projector having a consumable component such, as a lamp. The consumable component includes a memory device. An application on the projector has access to the memory device. Additionally, a user interface, updated by the application, is configured... | 10/18/2005 |
| 6847170 | Smart light source with integrated operational parameters data storage capability A light source having a light generator, a sensor for sensing operational parameters of the light generator, and a light source data storage device integrated with the light generator and operatively coupled to the sensor, for storing operating data correlated to th... | 01/25/2005 |
| 6753651 | Emergency ballast with battery heater An emergency ballast for a fluorescent lamp including a heater disposed adjacent the battery for maintaining the battery at a safe and effective operating temperature during the time which the lamp is powered by the normal AC power supply. Additionally, the ballast ... | 06/22/2004 |
| 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 |
| 6635991 | Method of adjusting the light spectrum of a gas discharge lamp, gas discharge lamp, and luminaire for said lamp The invention relates to a method of adjusting a desired spectrum of light emitted by a gas discharge lamp during its operation, said gas discharge lamp comprising a first ionizable substance and a second substance which is less readily ionizable than the... | 10/21/2003 |
| 6498442 | Self-heating type cold-cathode discharge tube control apparatus In a control apparatus for a self-heating type cold-cathode discharge tube, a microcomputer determines boosting time based on a detected surrounding temperature of the cold-cathode discharge tube. The boosting time is increases as the detected temperature... | 12/24/2002 |
| 6483247 | Lighting apparatus and light control method A lighting apparatus and method. The apparatus includes a light source, counting means for counting an actual amount of time that the light source has been used, and recording means in communication with the counting means for recording the actual amount ... | 11/19/2002 |
| 6479947 | Ultraviolet fluorescent lamp with unique drive circuit A unique drive circuit for a fluorescent lamp, as well as a housing for such lamp and drive circuit, are designed for mineral museum displays. The drive circuit comprises a ballast subcircuit, a separate filament transformer subcircuit for pre-heating the... | 11/12/2002 |
| 6476560 | Liquid crystal projector A liquid crystal projector comprises a reset switch for resetting the operation of a microcomputer, and abnormality recovery means for initializing, when the liquid crystal projector is in a power on mode, other circuits and the microcomputer without stop... | 11/05/2002 |
| 6472823 | LED tubular lighting device and control device An LED tubular lighting device and control device includes LEDs planted in a transparent tube and controllable via a controller to obtain multifarious light sources. The tubular lighting device includes LEDs soldered onto a circuit board in an equi-distan... | 10/29/2002 |
| 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 |
| 6333602 | Smart light source with integrated operational parameters data storage capability A light source having a light generator, a sensor for sensing operational parameters of the light generator, and a light source data storage device integrated with the light generator and operatively coupled to the sensor, for storing operating data corre... | 12/25/2001 |
| 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 |
| 6181070 | Method for cooling a lamp backlighting module of a liquid crystal display The present invention is a method for cooling a lamp backlighting module of a liquid crystal display. A preferred method of the present invention begins by providing a predetermined power input to a lamp. As power is provided to the lamp, the temperature ... | 01/30/2001 |
| 6127784 | LED driving circuitry with variable load to control output light intensity of an LED Circuitry for driving an LED array and a lamp including such circuitry. A fixed current source outputs a fixed current to an LED array. A variable load is provided in parallel to the LED array to also receive an output from the fixed current power supply.... | 10/03/2000 |
