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	Patent 6150772: Gas discharge lamp controller
		A gas discharge lamp controller controls and drives a gas discharge lamp, which may be either a hot cathode lamp or a cold cathode lamp, and may or may not be a fluorescent lamp.
		At lower illumination levels, the arc in a gas discharge lamp driven by a conventional ballast undergoes perceivable interruptions that cause the lamp to appear to "flicker." A lamp is considered not to be in normal operation when it is flickering.
		The breakdown voltage is the peak-to-peak measurement of the breakdown voltage of lamp 12 for the indicated brightness.
	freepatentsonline.com /6150772.html (5833 words)

	Lanthanum phosphate phosphor for vacuum ultraviolet radiation, and rare gas discharge lamp - US Patent 6597104 (Site not responding. Last check: 2007-10-06)
		The rare gas lamp is required not only to have high luminance but also to have little decrease of light flux due to an increase of the surrounding temperature, when it is used as a light source for reading out a manuscript of facsimile.
		The rare gas lamp of the present invention is the same as a conventional rare gas discharge lamp except that the fluorescent layer to be formed on the inner wall of a glass tube, is made of the above-described lanthanum phosphate phosphor of the present invention.
		Like a conventional rare gas lamp, the electrodes may be attached at both ends of the tube, inside and outside of the tube, or on the outside of the tube.
	www.patentstorm.us /patents/6597104.html (2426 words)

	Patent 4719390: Electronic mains connection device for a gas discharge lamp
		An inverter circuit electrically connecting a gas discharge lamp to a source of direct current voltage whereby the impedance of said lamp is resistive.
		In such a circuit, a lamp is directly coupled to the supply voltage at the half-cycle a switch element (e.g., a transistor) is conducting by, and the voltage at the terminals of a lamp turns opposite on the part of a cycle on which the switch element is in non-conductive state.
		1 except that a lamp 1 is connected to an inverter circuit and to a source of direct current by means of an economy transformer or autotransformer 9 which increases the supply voltage of lamp 1 with respect to the voltage of a current source.
	www.freepatentsonline.com /4719390.html (2744 words)

	Lead ballast circuit with power regulation for a gas discharge lamp - US Patent 5406175 (Site not responding. Last check: 2007-10-06)
		Gas discharge lamps such as metal halide or fluorescent lamps are typically powered from a source of a.c.
		It would, therefore, be desirable to provide a lead ballast circuit for a gas discharge lamp that attains regulation of lamp power to a narrower range, such as 5 percent, for instance.
		For instance, with a 400-watt metal halide lamp 30, a 10 percent fluctuation in the a.c.
	www.patentstorm.us /patents/5406175.html (3015 words)

	Gas Discharge Lamps, Ballasts, and Fixtures (Version 1.29)
		Because of the unusual appearance of the light from gas discharge tubes, quacks and con artists also have used and are using this technology as part of expensive useless devices for everything from curing cancer to contacting the dead.
		Fluorescent lamps are a special class of gas discharge lamps where the electric current produces mostly invisible UV light which is turned into visible light by a special phosphor coating on the interior of the tube.
		Lamps may be designed to operate on either AC or DC current depending on various factors including the size and shape of the electrodes.
	www.uvlamp.com /TechArt/gasdis.htm (5336 words)

	Arc lamp - Wikipedia, the free encyclopedia
		An arc lamp is a device that produces light by the sparking (or arcing, from voltaic arc or electric arc) of a high current between two carbon rod electrodes.
		The rods are touched and then slowly drawn apart; as the rods separate the current is "struck" and arcs across the gap in a bright, ionized path.
		The arc lamps were soon superseded by the more efficient and longer-lasting filament lamps in most roles, remaining in only certain niche markets such as cinema projection and search lights.
	en.wikipedia.org /wiki/Arc_lamp (351 words)

	Gas discharge headlights and visibility of coloured road signs » Clinical and Experimental Optometry
		In this study, the visibility of the road signs is used to examine the effect of the gas discharge lamp’s spectrum compared with that of the conventional halogen headlamp.
		The general colour rendering index of the gas discharge lamp is higher than that of the halogen lamp.
		Conclusion: The result indicates that the gas discharge lamp, while having a very different spectrum from daylight or tungsten halogen lamps, should not have a deleterious effect on sign detection or recognition, when compared to daylight or tungsten halogen lamps.
	www.optometrists.asn.au /ceo/backissues/vol83/no5/830 (312 words)

	Common Light Sources (Site not responding. Last check: 2007-10-06)
		The family of gas-discharge lamps encompasses a large number of different designs, but they all share a common trait: electricity "arcs" through a gas, which is ionized to create a luminous plasma.
		The "neon" lamp is the simplest form of gas discharge lamp, and is available in many different sizes and styles.
		The main body of the lamp constitutes a long electric arc, which ionizes the gas in the lamp to form a luminous plasma.
	wolfstone.halloweenhost.com /TechBase/litcom_CommonLightSources.html (1208 words)

	Patent 5051660: Circuit arrangement for operating a gas discharge lamp on a direct-current source
		Circuit arrangement according to claim 1, characterized in that an increased lamp current (I) is fed to the gas-discharge lamp (36) in the hot-running phase for accelerating the brightening of the lamp.
		A current (I) which is proportional to the lamp current I and is transformed corresponding to the turns ratio of the current transformer 37 is fed to a function block 14.1 at the control input 17.
		When the lamp is cold immediately after the ignition, the gas-discharge lamp receives an increased starting current which is controlled within the range of the right-hand, flatter straight line II of the plot within the function block 14.1.
	www.freepatentsonline.com /5051660.html (3331 words)

	Gas filled tube
		Gas filled tubes are arrangements of electrodes in a gas within an insulating, temperature-resistant envelope.
		Xenon flash lamps are gas filled tubes used in cameras and strobe lights to produce bright flashes of light.
		A type of gas filled tube called the Geiger-Müller tube is used to detect and measure ionizing radiation.
	www.sciencedaily.com /encyclopedia/gas_filled_tube (263 words)

	Gas Discharge Lamps, Ballasts, and Fixtures
		Such lamps are used in some self-service elevators: once the lamp is fired, the low voltage across it is sensed by the ancient logic circuits of the elevator controller and it'll send the elevator to the appropriate floor.
		In addition, some metal halide lamps have a halogen cycle in them to keep the inner surface of the bulb clean, and that may not work if the lamp is overcooled and not enough of the chemicals in the bulb get vaporized.
		Projector lamps in general, and especially specialized HID lamps, should be used only in equipment made specifically to use the particular lamps in question, or by those who know about these things well enough to make their own ballasts and know the other messy things about these lamps.
	members.misty.com /don/dschlamp.html (7875 words)

	美国专利申请公开说明书 20040245945 - Method and apparatus for driving a gas discharge lamp (Site not responding. Last check: 2007-10-06)
		A method for driving a gas discharge lamp (1) is described, wherein electric first DC power is provided at a relatively high voltage and a relatively low current.
		Said second power is fed to a gas discharge lamp, preferably via a commutator.
		A downconverter device (30) for use in a driving apparatus (10) for a gas discharge lamp (1) is described.
	cxp.paterra.com /uspregrant20040245945cn.html (127 words)

	Gas-discharge lamp having brightness control
		A gas-discharge lamp and approach of operаting the lamp for managing the brightness of the lamp.
		The lamp comprises a drive for providing a vаrying indicator in resроnse to reсeiving first and subsequent control indicators.
		De lamp omvat een aandrijving voor het leveren van een variërend signaal in antwoord op het ontvangen eerst en tweede controlesignalen.
	www.patentalert.com /docs/000/z00073494.shtml (176 words)

	lamps (Site not responding. Last check: 2007-10-06)
		Two Americans bought the rights to this first lava lamp and called it the Lava Brand Motion Lamp, which was popularly dubbed the lava lamp.
		When the lamp is turned on, the metal coil is warmed by the light bulb heating the wax.
		A lava lamp may not have lamp shades or lamp bulbs, but nevertheless, it is undoubtedly the most unique lamp available.
	www.lamps-n-lamps.info /gas_discharge_lamp (326 words)

	(WO 03/090250) GAS-DISCHARGE LAMP WITH A COLOUR-COMPENSATING FILTER (Site not responding. Last check: 2007-10-06)
		(57) The invention relates to a gas-discharge lamp having a discharge vessel (5), two electrodes (7, 8), a cap (2), an outer envelope (11), and a filling in the discharge vessel comprising a metal halide.
		Gas-discharge lamps of this kind are used in particular as light sources for the headlight systems of motor vehicles.
		In gas-discharge lamps of the generic kind, that proportion (15) of salts in the filling that is not in the gaseous state when the lamp is operating produces a coloration in the beam generated.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=03/90250.031030 (218 words)

	Emission Spectroscopy (Site not responding. Last check: 2007-10-06)
		Observe the spectrum of a gas by dragging any of the gas lamps (except the bottom one since it is an unknown gas) from the bottom left of the screen and dropping it into the gas lamp socket above.
		The gas lamp at the bottom left of the screen corresponds to an "unknown" gas that has a changeable spectrum.
		Click and drag the "unknown" gas lamp into the gas lamp socket.
	phys.educ.ksu.edu /vqm/html/emission.html (287 words)

	Learn more about Timeline of lighting technology in the online encyclopedia. (Site not responding. Last check: 2007-10-06)
		1879 Thomas Edison and Joseph Wilson Swan patent the carbon-thread incandescent lamp.
		1889 Incandescent gas mantle invented, revolutionises gas lighting.
		1893 Nikola Tesla uses cordless low pressure gas discharge lamps, powered by a high frequency electric field, to light his laboratory.
	www.onlineencyclopedia.org /t/ti/timeline_of_lighting_technology.html (236 words)

	Relative enhancement of near-UV emission from a low-pressure mercury-rare-gas discharge lamp, for an LCD backlighting ...
		The light source is a pulse driven, mercury-argon gas, low-pressure discharge lamp.
		Pulse driving and lamp filling conditions are described for a lamp for which the ratio of the radiant outputs at 365 and 254 nm is enhanced considerably compared with the same lamp when it is operated with a conventional ac ballast.
		Pulsed operation of the lamp is shown also to increase the absolute radiant output of the group of transitions near 365 nm compared with the respective radiant output power from the same lamp when it is operated with ac with the same total input power.
	stacks.iop.org /0957-0233/11/547 (322 words)

	Gas Discharge Lamps
		The Nordic range of high intensity lamps are designed to withstand the rugged requirements of the mining, drilling and earth moving industries, with light output that allows your equipment to meet ISO standards for lighting.
		Due to the low power consumption of the Nordic HID series lamps, the requirement for high output alternators is eliminated, reducing costs and decreasing the problem of low batteries causing starter failure.
		Due to the the fact there is no filament to break, the average life of a gas discharge lamp is 5000 hours, about 10 ten times that of a standard halogen bulb.
	www.warningsystems.com.au /h_i_d.htm (316 words)

	Thomson scattering on an inductively-coupled gas discharge lamp
		Thomson scattering on a low-pressure, inductively-coupled gas discharge lamp
		Excitation and light production processes in gas discharge lamps are the result of inelastic collisions between atoms and free electrons in the plasma.
		The modifications to the lamp that were necessary for the measurements are described, and results are presented and compared to previous work and trends expected from the electron particle and energy balances.
	stacks.iop.org /0022-3727/35/1381 (338 words)

	Lifestyles Therapeutics
		The second method of ozone production is corona discharge, where a tube with a hot or cold cathode is surrounded by a metal anode.
		Lack of durability has always beset corona discharge ozone generators, and was a major reason for doctors mostly abandoning ozone therapy in the US during the Forties, in the face of increasing pressure from the FDA and the AMA.
		In 1896, Tesla was issued a patent for a corona discharge ozone generator using charged metal plates to act on ambient air.
	www.lifestylestherapeutics.com /TSOOzone.html (13231 words)

	Gas Discharge Lamps, Ballasts, and Fixtures
		Evertron Model 3210 Gas Tube Power Supply shows the schematic of this unit.
		The open circuit voltage is stamped on the ballast and is between about 150 and 350 Vac, depending on lamp wattage and ballast.
		See Jonathan's Electronic Ballast to Power HID Lamps from 12 VDC for a description and schematic of an inverter that will drive a variety of high intensity discharge lamps from low voltage DC.
	repairfaq.ece.drexel.edu /sam/dlamp.htm (8158 words)

	Master of some: Direct-view-display technology - 3/3/2005 - EDN - CA505067
		The lamp used to illuminate the LCD in such a product usually consumes more battery power than the LCD itself.
		A reflective LCD, as used in pocket calculators and digital watches, is viewed by ambient light reflected in a diffuse (light-scattering) reflector behind the display.
		The advantage of this type is that there is no lamp to consume power." Combination transmissive-plus-reflective LCDs that, for example, extinguish the backlight in high-ambient-lighting environments, are also available.
	www.edn.com /article/CA505067.html?spacedesc=staffFeature (4191 words)

	Analysis of models of gas discharge lamp for harmonic studies (Site not responding. Last check: 2007-10-06)
		In this paper several models of gas discharge lamps with inductive ballast are studied: single fluorescent lamps, lamps with two—level arc voltage and saturable ballast lamps.
		Each model provides the lamp current and its harmonic decomposition considering fundamental and harmonic voltages at the load connecting point.
		This program has been used to study several cases, in which the importance of harmonic interaction in resonance conditions is shown.
	www.cieng.ufu.br /indice/abs01-1/abs10-01-1.htm (97 words)

	(WO 01/59810) FLAT GAS DISCHARGE LAMP WITH SPACER ELEMENTS (Site not responding. Last check: 2007-10-06)
		(57) The invention relates to a flat gas discharge lamp, comprising a discharge chamber and electrodes, whereby the discharge chamber comprises a base plate (1), a top plate (2) and at least one spacer element (8) between the base plate (1) and the top plate (7).
		Each spacer element, thus, comprises an electrically conducting component (9), connected to an electrode or power supply.
		The spacer elements (8) may then actively participate in the discharge and consequently in the production of light.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/59810.010816 (229 words)

	USHIO America, Inc. specializes in Quartz Halogen and Special Gas Discharge lamp technology. (714) 236-8600
		USHIO America, Inc. specializes in Quartz Halogen and Special Gas Discharge lamp technology.
		We offer advanced excimer and e-beam systems for industrial, scientific and medical purposes, along with the engineering and integration resources to adapt our systems for other advanced manufacturing environments.
		Eurostar Reflekto MR-11 was awarded "Best of Category" in the Incandescent and Halogen Lamps by the New Product Showcase Committee at Lightfair 2004.
	www.ushio.com (187 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		Energy Citations Database (ECD) Document #6257940 - Gas discharge lamp energization circuit
		Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
		For a journal article, please see the Resource Relation field.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=6257940 (111 words)

	Timeline of lighting technology - Questionz.net , answers to all your questions (Site not responding. Last check: 2007-10-06)
		BC oil lamps * 1840 first kerosene lamps (oil lamps that burn fuel from petroleum) * 1853 Ignacy Lukasiewicz invents petrol lamp * 1792 William Murdoch lights his house and office by means of gas.
		* 1841 Arc-lighting used as experimental public lighting in Paris * 1867 A. Becquerel demostrates the first fluorescent lamp * 1875 Henry Woodward patents the electric light bulb.
		* 1879 Thomas Edison and Joseph Wilson Swan patent the carbon-thread incandescent lamp.
	www.questionz.net /List_of_themed_timelines/lighting_technology.html (308 words)

	U.S. Pregrant 20040183463 - Method and circuit for driving a gas discharge lamp (Site not responding. Last check: 2007-10-06)
		U.S. Pregrant 20040183463 - Method and circuit for driving a gas discharge lamp
		Method and circuit for driving a gas discharge lamp
		Circuit and method for driving a gas discharge lamp having a bridge converter.
	cxp.paterra.com /uspregrant20040183463.html (176 words)

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