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| Number | Title | Issue Date |
| 8125154 | Automatic lamp detection method and optimal operation for fluorescent lamps There is provided a method that can detect the lamp type of fluorescent lamps and operate the lamp at the appropriate lamp power. The proposed method involves the classification of lamp characteristics of existing fluorescent lamps and the use of logic detection met... | 02/28/2012 |
| 8058806 | Fluorescent task lamp with optimized alignment and ballast A handheld fluorescent task lamp comprising a housing assembly having a housing and a tubular lens body enclosing compact fluorescent bulbs, an elongated spine configured for slidingly supporting the lens body, and a resilient bulkhead for cushioning the compact flu... | 11/15/2011 |
| 7560866 | Control system for fluorescent light fixture A ballast module for a fluorescent light comprises an electrolytic capacitance element. A temperature sensor senses a temperature of the electrolytic capacitance element. A control module communicates the temperature sensor and adjusts power output to the fluorescen... | 07/14/2009 |
| 7414369 | Control system for fluorescent light fixture A control system comprises a switch and a control module that communicates with the switch and that samples a filament resistance of a fluorescent light when the switch is off and that selectively increases current supplied to the fluorescent light above a nominal c... | 08/19/2008 |
| 7357528 | CCFL illuminated device and method of use Cold cathode fluorescent lamps (CCFLs), associated devices and methods of use, and more specifically, exit signs, traffic signals, informational and other signage and lighting devices utilizing CCFL-type devices are provided with novel connectors, mounting brackets,... | 04/15/2008 |
| 7256549 | Three electrode arc-discharge lamp A method of operating an arc discharge lamp that has first and second electrodes is described. First, the first electrode is heated with a third electrode with a first arc until the first electrode temperature is sufficiently elevated to allow for thermionic emissio... | 08/14/2007 |
| 7224124 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 05/29/2007 |
| 7211970 | Discharge lamp lighting device and lighting unit A resonance load circuit is supplied with the high-frequency voltage from the inverter circuit, and includes an inductor, a capacitor and a discharge lamp. The resonance load circuit is so that a declination with respect to the lighting frequency fs is set to a rang... | 05/01/2007 |
| 7084587 | Apparatus and method for control of high intensity discharge lighting An improved apparatus and method for control of discharge lighting, such as HID (high intensity discharge) lighting, effects full-voltage start up of the lighting, and sustained operation of the lighting at a reduced voltage after a selected and variable start-up ph... | 08/01/2006 |
| 7074104 | Low-pressure mercury vapor discharge lamp with improved heat dissipation, and manufacturing method therefore A bulb-type fluorescent lamp has a case having an open end portion for housing a lighting circuit therein, an arc tube extending outside through the open end portion of the case, and a globe having an open end portion for housing the arc tube therein. An adhesive is... | 07/11/2006 |
| 7059926 | Method of making a spark plug having a multi-tiered center wire assembly A method of making an ignition device and center wire assembly that includes first, second and third electrode members, a conductive seal, and a noise suppressing seal. The method locates the first electrode member at an axial end of the center wire assembly near a ... | 06/13/2006 |
| 7049926 | Single and multi layer variable voltage protection devices and method of making same Disclosed is a variable voltage protection device for electronic devices which in one aspect comprises a thin layer of neat dielectric polymer or glass positioned between a ground plane and an electrical conductor for overvoltage protection, wherein the neat polymer... | 05/23/2006 |
| 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 |
| 6965093 | Device for thermally treating substrates The aim of the invention is to enable substrates to be thermally treated in a more homogeneous manner. In order to achieve this, a device is provided for thermally treating substrates, especially semiconductor wafers, comprising at least two adjacent, essentially pa... | 11/15/2005 |
| 6933676 | Driver circuit for a vacuum fluorescence display A vacuum fluorescence display has a plurality of heating regions and heating inputs corresponding thereto. A driver circuit for the VFD has a driver module with a pulse width-modulatable output connected by way of a distributor to a plurality of heating inputs of th... | 08/23/2005 |
| 6919687 | High-voltage discharge lamp lighting apparatus, high-voltage discharge lamp apparatus, and floodlight projector apparatus A high-voltage discharge lamp lighting apparatus has a stabilizer which supplies a power voltage used for maintaining the lighting operation to a high-voltage discharge lamp, and an ignitor circuit having an oscillating circuit-for-driving in which a start pulse gen... | 07/19/2005 |
| 6858987 | Flash lamp unit and flash radiation device The object of the present invention is to provide a flash lamp unit with a long service life which allows a high radiant efficiency to be obtained and a flash radiation device demonstrating excellent flash radiant performance despite a small size, and the flash lamp... | 02/22/2005 |
| 6841936 | Fast recovery electron multiplier An improved electron multiplier bias network that limits the response of the multiplier when the multiplier is faced with very large input signals, but then permits the multiplier to recover quickly following the large input signal. In one aspect, this invention pro... | 01/11/2005 |
| 6774546 | Multiple, parallel filament lamp An improvement to the usable lifetime of a lamp includes the use of a primary filament, a backup filament, and a means to switch portions of the backup filament into the current flow path after a portion of the primary filament open circuits. Using bypass shunts, wh... | 08/10/2004 |
| 6765339 | Infrared lamp and procedure for heating material to be processed An infrared lamp with a closed-off enveloping tube which encloses an emission source joined with contacts for a power supply in the form of a carbon ribbon which, extending in a direction of a long axis of the enveloping tube, determines an irradiation length of the... | 07/20/2004 |
| 6617792 | Pixel mirror based stage lighting system A lighting system with a digital micromirror device which forms a digital gobo system that is controllable on a pixel level. The device includes a number of sensitive electronic elements. The device is controlled by two different controllers: a digital si... | 09/09/2003 |
| 6600272 | Bulb-shaped fluorescent lamp A bulb-shaped fluorescent lamp adopting an inexpensive and highly reliable electronic ballast is provided. A fluorescent arc tube, an electronic ballast, and a base are provided. The electronic ballast lights and drives the fluorescent arc tube, and the b... | 07/29/2003 |
| 6577065 | Electric lamp with light source extinguishing arrangement and method of operating same An electric lamp is provided which includes a sealed thin-walled outer envelope containing a fill gas having a high thermal conductivity. A lamp capsule is contained within the outer envelope and is in series with an oxidizable fuse also contained within ... | 06/10/2003 |
| 6552494 | Fluorescent lamp driver circuit Herein described is a driver circuit of a fluorescent lamp having a first and a second electrode and igniting when the voltage between the first and second Electrode exceeds a given threshold voltage. The driver circuit comprises an inductance coupled to ... | 04/22/2003 |
| 6528955 | Ballast system for a fluorescent lamp A flasher ballast system includes a high frequency instant start ballast and one or more transformers. The high frequency instant start ballast may provide the strike voltage and perform the current limiting functions for a fluorescent lamp. The transform... | 03/04/2003 |
| 6469447 | Fluorescent lamp lighting apparatus A fluorescent lamp lighting apparatus includes a fluorescent light emitting tube; and an electronic lighting circuit for applying an electric current to the fluorescent light emitting tube. The electronic lighting circuit includes a pair of electrode fila... | 10/22/2002 |
| 6359387 | Gas-discharge lamp type recognition based on built-in lamp electrical properties A gas discharge lamp has an impedance element such as a capacitor connected to at least one electrode heater, to produce a heater impedance which falls within a range which is unique to lamps of that lamp type. An electronic ballast for operating such lam... | 03/19/2002 |
| 6342764 | High pressure discharge lamp A discharge tube is provided inside an outer tube. At least a pair of electrodes is arranged inside the discharge tube, and at least mercury is sealed into the discharge tube. The electrode includes an electrode pin and a metal pipe that surrounds the ele... | 01/29/2002 |
| 6320317 | Glass seal resistor composition and resistor spark plugs A resistor seal composition useful in resistor spark plugs, comprises glass, at least one metal oxide, at least one filler material, and a branched or straight chained zirconium carboxylate. The glass comprises a strontium borate glass and/or a borosilica... | 11/20/2001 |
| 6265835 | Energy-efficient ultraviolet source and method A ballast-free energy-efficient ultra-violet material treatment and purification system and method having an ultraviolet (UV) source comprising a gas discharge UV lamp having spaced electrodes, a source of a high-frequency (about 100 kHz to about 1.5 MHz)... | 07/24/2001 |
| 6215663 | Printed circuit board assembly with improved thermal performance A printed circuit board assembly comprises a printed circuit board and a heat sink that has two surface planes. One surface plane of the heat sink is raised, and provides a surface area for contact with the printed circuit board. The other surface plane i... | 04/10/2001 |
| 6184622 | Inductive-resistive fluorescent apparatus and method A fluorescent illuminating apparatus includes a translucent housing with a chamber within which a fluorescent medium is supported and electrical connections configured to provide an electrical potential across the chamber. An inductive-resistive structure... | 02/06/2001 |
| 6149279 | Indicating instrument for vehicle A straight cold cathode fluorescent lamp is detachably held at the back of a dial plate by a plurality of fork-shaped holders to illuminate a plurality of scales formed on the front surface of the dial plate and accommodated in the reflector which is also... | 11/21/2000 |
| 6081072 | Filament lamp for wafer heating and heating light source A heating light source for a heat treatment device of the light irradiation type with high temperature uniformity on the wafer surface during heating and a small operating current and a lamp which is used for the heating light source. By using a light sou... | 06/27/2000 |
| 5834899 | Fluorescent apparatus and method employing low-frequency excitation into a conductive-resistive inductive medium A fluorescent illuminating apparatus includes a translucent housing with a chamber within which a fluorescent medium is supported. The fluorescent medium and housing may be part of an ordinary fluorescent lightbulb. The housing has electrical connections ... | 11/10/1998 |
| 5629586 | Compact fluorescent lamp unit having first and second sealed end portions separated by a support member A compact fluorescent lamp unit has a phosphor coated bulb of which first and second sealed end portions. A pair of filaments is disposed in the bulb. The filament contains an emitter for enhancing thermionic emission of electrons therefrom and is caused ... | 05/13/1997 |
| 5463278 | Method and apparatus for random frequency of tube filament current Radiated emission is reduced in a vacuum fluorescent tube having a pulsed filament current in a variable frequency range above audible frequencies. A driver circuit produces a fixed width pulse of filament current when triggered by a random frequency gene... | 10/31/1995 |
| 5420479 | High pressure vapor discharge lamp with a built-in igniter A built-in igniter type high pressure sodium lamp includes an igniter connected in parallel with an arc tube 1 for a high pressure sodium lamp and composed of a series circuit of a thermally-activated bimetal switch 2 and a nonlinear capacitor 3. The high... | 05/30/1995 |
| 5389856 | High-pressure discharge lamp with an integral fuse-capacitor component The invention relates to a high-pressure discharge lamp (2) provided with a discharge vessel (3) and an outer envelope (30) which encloses a space (6). The lamp is provided with an igniter circuit (10) which comprises a voltage-dependent capacitor (8) and... | 02/14/1995 |
| 5339006 | High pressure discharge lamp The invention relates to a high-pressure discharge lamp provided with a discharge vessel which is enclosed with intervening space by an outer bulb fitted with a lamp cap. The lamp is provided with an ignition circuit in which a fuse is included, which is ... | 08/16/1994 |
