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7583030 |
Dopant-free tungsten electrodes in metal halide lamps
A metal halide lamp having a high pressure quartz arc tube in which the electrodes are non-thoriated.
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7486026 |
Discharge lamp with high color temperature
A lamp includes a discharge sustaining fill which includes cesium halide, one of indium halide and thallium halide, optionally gadolinium halide and a rare earth halide component selected from...
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7474057 |
High mercury density ceramic metal halide lamp
A low wattage mercury vapor lamp comprises a discharge vessel ( 10 ) including a tubular body ( 12 ), first and second electrodes ( 20, 22 ) and two end walls ( 16, 18 ), which close opposite ends...
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7468585 |
Metal halide lamp
A metal halide lamp of the present invention has an arc tube formed of ceramic and a pair of opposing electrodes. This lamp includes a Pr (praseodymium) halide, a Na (sodium) halide, and a Ca...
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7414368 |
Ceramic metal halide lamp with cerium-containing fill
A metal halide lamp ( 10 ) includes a discharge vessel ( 12 ) which may be formed of a ceramic material. The vessel defines an interior space ( 16 ). An ionizable fill is disposed in the interior...
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7388333 |
High pressure discharge lamp having emission matching an absorption spectrum of green plant
The invention relates to a high pressure discharge lamp intended for use in assimilation lighting. According to the invention the high-pressure discharge lamp has a discharge vessel, which besides...
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7358675 |
Low-pressure discharge lamp and back light device using same
A low-pressure discharge lamp ( 1 ) is provided that includes a glass tube ( 2 ) having an inner diameter in a range of 1 to 5 mm and a pair of electrodes ( 3 ) disposed at end portions in the...
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7348731 |
High-pressure gas discharge lamp with an asymmetrical discharge space
A high-pressure gas discharge lamp (HID [high intensity discharge] lamp) is described which is in particular free from mercury and suitable for use in automobile technology. The lamp is remarkable...
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7323820 |
Metal halide lamp
The metal halide lamp has a ceramic discharge vessel and contains two groups of metal halides: a first group made up of the emitters and a second group made up of the wetters. The second group...
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7319294 |
Metal halide high pressure discharge lamp
In the metal halide high-pressure discharge lamp for stage, film and television lighting systems and for projection technology and effect lighting, the discharge vessel contains dysprosium and...
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7279841 |
Arc tube for a discharge lamp
An arc tube for a discharge lamp has a closed chamber filled with rare gas and a metal halide containing at least Na halide or Sc halide, and electrodes, wherein sealing pressure of the rare gas is...
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7227309 |
Metal halide lamp
The present invention provides a metal halide lamp in which the change of the color temperature is suppressed regardless of the orientation of the light emitting bulb in use. The metal halide lamp...
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RE38807 |
High pressure discharge lamp, with tungsten electrode and lighting optical apparatus and image display system using the same
The present invention provides a high pressure discharge lamp which is provided with a discharge tube containing a pair of electrodes therein and being filled with mercury, an inert gas and a...
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6946797 |
Metal halide fill, and associated lamp
A metal halide fill for forming an ionizable fill comprising at least one inert gas, mercury, and at least one halogen, the fill additionally comprising the following constituents: Mn halide and V...
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6888312 |
Metal halide lamp for curing adhesives
An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the...
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6873109 |
Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp
Disclosed is a metal halide discharge lamp which essentially permits disusing mercury. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes...
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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...
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6841938 |
Metal halide lamp
Metal halide lamps have a discharge vessel operable at a high coldest spot temperature. The discharge vessel encloses a discharge space comprising an ionizable gas filling and, in addition to Hg,...
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6812644 |
Reduced mercury ceramic metal halide lamp
Arc tube ( 10 ) has a bulbous body ( 12 ) with a hollow center portion ( 14 ) and opposite ends ( 16, 18 ). Each of these ends has a cylindrical terminal-receiving section ( 20, 22 ) extending...
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6809478 |
Metal halide lamp for automobile headlight
A metal halide lamp for an automobile headlight is provided, which includes an arc tube in which a pair of tungsten electrodes are provided at both ends and a metal halide as a main component of a...
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6717364 |
Thallium free—metal halide lamp with magnesium halide filling for improved dimming properties
A [thallium free] high pressure ceramic metal halide lamp having superior dimming characteristics with a fill composition including MgI 2 and/or MgBr 2 .
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6703771 |
Monochromatic vacuum ultraviolet light source for photolithography applications based on a high-pressure microhollow cathode discharge
A light source with a sealed, light-transmissive tube filled with high pressure gases or high pressure gas mixtures and a microhollow cathode (MHC) discharge capable of excimer production are...
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6376988 |
Discharge lamp for automobile headlight and the automobile headlight
A discharge lamp for an automobile headlight has a light color that lies in a region common to the following three regions: a region bounded by an ellipse with a color point (u, v)=(0.224, 0.331)...
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6369522 |
Metal halide lamp lumen depreciation improvement
A ballast and metal halide lamp circuit improvement designed to reduce lamp lumen depreciation over the life of the lamp, wherein the circuit comprises a high frequency electronic ballast...
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6362569 |
High-pressure metal halide discharge lamp
A high-pressure metal halide discharge lamp having a power rating of at most 100 W is provided with a discharge vessel having a translucent ceramic wall with a thickness d of at least 1.2 mm. In...
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6290874 |
Display screen comprising a metal oxide-containing phosphor composition
A display screen comprising a phosphor composition which includes a phosphor and a phosphor coating with a group of metal-oxygen compounds, the group of metal-oxygen compounds containing an...
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6271628 |
High pressure lamp with specific amount of mercury, halogen and wall loading
A high pressure mercury lamp in which formation and spreading of milky opacification in the fused silica glass forming the discharge vessel can be advantageously prevented, and thus a rapid...
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6232720 |
High-pressure mercury vapor discharge lamp
A high-pressure mercury vapor discharge lamp comprises an arc tube in which a pair of electrodes are provided and in which a rare gas as a starting gas, a material from which a free halogen is to...
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6147440 |
Low wattage lamp having formed arc tube in aluminosilicate outer jacket
A reflector lamp 10 has a vitreous outer envelope 12 formed of a concave reflector 14 and a light-transmitting 16 cover peripherally sealed thereto. The concave reflector and cover are...
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6107742 |
Metal halide lamp
A metal halide lamp comprises a pair of electrodes and a discharge vessel filled with at least one metal halide comprising at least one rare earth metal halide, halogen in excess of the...
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5973454 |
Short arc type metal halide lamp with encapsulated rare earth metal halides to increase color reproducibility
A metal halide lamp in which the radiant efficiency is not adversely affected, in which outstanding color reproducibility is obtained, and which is suitable for a light source of an OHP or a direct...
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5929563 |
Metal halide high pressure discharge lamp
A metal-halide high-pressure discharge lamp (1) with a discharge vessel (2) nd two electrodes (4, 5) has inside discharge vessel (2) an ionizable filling, which contains yttrium (Y) in addition to...
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5864210 |
Electrodeless hid lamp and electrodeless hid lamp system using the same
The apparatus has a light transmitting bulb for confining a discharge therein, a fill sealed within the light transmitting bulb and including a rare gas and a metal halide emitting a continuous...
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5831388 |
Rare earth metal halide lamp including niobium
A projection lamp includes a metal halide discharge lamp (1) with a lightansparent discharge vessel (2) in which two electrodes (3) stand opposite one another, which are joined with current leads...
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5694002 |
Metal halide lamp with improved color characteristics
A highly efficient discharge lamp has a color rendering index of about 85, a lumens per watt rating of about than 90, a correlated color temperature of 3000° K., and a wall loading of about 21...
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5691601 |
Metal-halide discharge lamp for photooptical purposes
A metal-halide discharge lamp for photooptical purposes has a small electe spacing of less than 15 mm, preferably 2-8 mm, to provide an essentially pin-point light source, and a fill which contains...
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5635796 |
High-pressure discharge lamp including halides of tantalum and dysprosium
A high-pressure metal-halide discharge lamp (1) having a mean arc power been 60 and 140 W/mm arc length includes a discharge vessel (2), two electrodes (5,6), a fill of mercury, at least one noble...
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5512800 |
Long life metal halide lamp and an illumination optical apparatus and image display system using same
In a metal halide lamp container 1 sealed with mercury and rare gas, GdX 3 , LuX 3 , and CsX where halogen is iodine, bromine, or their mixture are sealed in a total weight of 1 mg/cc or more, with...
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5471110 |
High pressure discharge lamp having filament electrodes
A high pressure discharge lamp having a discharge vessel with opposing end chambers includes discharge electrodes each consisting of an open elongate filament of refractory metal wire having a...
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5461281 |
High-pressure discharge lamp with a halide fill including life-extending additives
To prevent attack on electrodes (4, 5) within a discharge vessel (2) by an ionizable metal halide fill, due to spurious or free oxygen arising within the lamp during operation thereof, which oxygen...
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5451838 |
Metal halide lamp
A metal halide lamp includes a quartz sealed tube having a pair of electrodes using tungsten as the base material. Argon gas, mercury, at least one kind of rare earth metal (e.g., dysprosium,...
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5434473 |
High pressure sodium vapor discharge lamp
This invention relates to a high pressure sodium vapor discharge lamp the discharge space of which is enclosed by a ceramic vessel having hermetically sealed ceramic end members with electric lead...
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5416383 |
High-pressure discharge lamp and low-noise lamp operating system
To reduce the noise level of operation of a high-pressure metal halide diarge lamp, the lamp has a rotation-symmetrical discharge vessel (2) which has an inner surface which has a central region...
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5394059 |
Metallic vapor discharge lamp and a method for curing paints and inks therewith
In a metallic vapor discharge lamp, in whose arc tube provided with electrodes are encapsulated together with mercury and inert gas, whose quantity is adequate for maintaining arc discharges, an...
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5382873 |
High-pressure discharge lamp with incandescing metal droplets
The high-pressure discharge lamp has a filling in a discharge vessel (1) which includes a rare gas and a metal compound (2) chosen from hafnium halides and zirconium halides. The halide evaporates...
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5264760 |
High-pressure metal halide discharge lamp with a fill containing nickel halide
To maintain a predetermined design color temperature throughout the lifet of a metal halide high-pressure discharge lamp, particularly suitable for illumination of theaters, film or television...
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5239232 |
Light balance compensated mercury vapor and halogen high-pressure discharge lamp
The high-pressure lamp has a fill including a metal halide of two groups, which the first group is a first rare earth halide of dysprosium, thulium and optionally holmium, and a second group of...
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5225738 |
Metal halide lamp with improved lumen output and color rendition
The luminous efficacy and color rendering index of a metal halide lamp containing sodium iodide and scandium iodide is increased, and the color correlated temperature is decreased, by the addition...
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5225733 |
Scandium halide and alkali metal halide discharge lamp
A scandium halide and alkali metal halide discharge lamp has a chemical fill in the arc tube comprising an inert starting gas, mercury, alkali metal iodides, scandium iodide and platinum metal as...
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5221876 |
Xenon-metal halide lamp particularly suited for automotive applications
A lamp containing a fill of xenon, mercury and metal halide is disclosed which serves as a light source for lighting applications and is particularly suitable for automotive forward lighting...
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