Abstract:
The invention relates to improvements in high-pressure discharge lamps of the ceramic metal halide type of the Philips MasterColor series having a metal coil wrapped around the discharge vessel and/or at least a portion of the electrode feed through means, and having power ranges of about 150W to about 1000W, wherein the lamp has a metal coil wound around the discharge vessel and/or at least a portion of the electrode feed through means in a first position and in which metal coil the coil position of at least one coil portion, preferably multiple coil portions, and most preferably substantially all of the coil portions of the metal coil are stabilized to be substantially non-relaxed from the first position after exposure to elevated temperature conditions present during operation of the lamp. The metal coil functions as both an ignition aid and for containment in said lamp.
Abstract:
A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the cerium (III) ion, praseodymium (III) ion, neodymium (III) ion, samarium (III) ion, europium (III) ion, gadolinium (III) ion, terbium (III) ion, dysprosium (III) ion, holmium (III) ion, erbium (III) ion, thulium (III) ion, ytterbium (III) ion and lutetium (III) ion, is environmentally friendly and has a high lamp efficiency nulllamp. The invention also concerns a down conversion luminophore which in a host lattice has a pair of activators of a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the cerium (III) ion, praseodymium (III) ion, neodymium (III) ion, samarium (III) ion, europium (III) ion, gadolinium (III) ion, terbium (III) ion, dysprosium (III) ion, holmium (III) ion, erbium (III) ion, thulium (III) ion, ytterbium (III) ion and lutetium (III) ion.
Abstract:
In a lamp and method for fabricating the same, an outer surface of the lamp tube is dipped into a conductive transparent solution for forming an electrode by a predetermined depth, and then the lamp tube is pulled out from the solution. Accordingly, an electrode having different profiles is formed on the outer surface of the tube body. Also, the outer surface of the lamp tube is dipped into the solution by an acute angle, and is pulled out from the solution. Therefore, a problem of a nonuniform brightness between lamps is not generated, and light utilization efficiency is much enhanced even when using a plurality of lamp in parallel connected to a power supply.
Abstract:
An external electrode discharge lamp 11 is provided with dielectric barrier type electrodes 30 and 40 on an outer surface of end portions of a tubular glass vessel 20. An inner wall of the tubular glass vessel of the lamp 11 is covered with a protective layer 70, 90 made of a metal oxide layer, for example, at least at a portion where the electrodes are arranged, so that the inner wall is not exposed to the inside space of the vessel 20. With the feature, a hole is prevented from being formed at a portion of the tubular glass vessel, and a long life lamp can be provided.
Abstract:
A flat lamp structure is disclosed. The flat lamp structure comprises a gas discharge chamber, a fluorescence substance, a discharge gas, and a plurality of electrodes. The fluorescence substance is disposed on the inner wall of the gas discharge chamber, and the discharge gas is disposed in the gas discharge chamber. The electrodes are disposed on the outer wall of the gas discharge chamber, wherein the gas discharge chamber comprises a dielectric substrate, a plate, and a plurality of rods, and the plate is disposed on the upper portion of the dielectric substrate and the rods are disposed between the plate and the dielectric substrate, and the plate and the edge of dielectric are connected. Additionally, the gas discharge chamber, for example, can dispose with at least a spacer to enhance the strength of the gas discharge chamber.
Abstract:
The present invention relates to a discharge lamp containing a radioactive gas for starting said lamp. The radioactive gas is enclosed in a capsule, a wall of which is transparent to the radioactive radiation. Thus, the capsule promotes the starting of the discharge lamp, whilst preventing consumption of the radioactive gas which it contains, since the latter is isolated from the filling gas by the sealed walls of the capsule. The service life of the discharge lamp is thus increased.
Abstract:
A dry cleaning device which uses a double-cylinder type dielectric barrier discharge lamp 10a, 10b as a ultraviolet source. An outside electrode 2 in a trough-like shape is tightly contacted with the outer tube 1a of a discharge container 1, reflecting the ultraviolet light and directs it toward a workpiece 40. A cover 3 covers the outside electrode 2 for insulation of the outside electrode 2 from the ozone. In the clearance between the outer tube 1a of the discharge container 1 and an N2 introduction tube, an inside electrode 6 in a net-like shape is accommodated, nitrogen (N2) gas is caused to flow through the clearance for cooling the lamp 10a, 10b.
Abstract:
A dielectric barrier discharge type low pressure discharge lamp 11 includes dielectric barrier discharge type external electrodes 21, 22 on external ends of a tubular glass lamp vessel 10, electrically conductive material layers 31, 32 on the external surface of the tubular glass lamp vessel, and heat equalizing members 41, 42, which are provided on the electrically conductive material layer. With the constitution, the surface temperature of the external electrodes 21, 22 can be equalized with a local temperature rise avoided, thereby a longer life of the lamp can be assured.
Abstract:
The invention relates to a method of manufacturing a gas discharge lamp and to such a gas discharge lamp 100. A known gas discharge lamp 100 comprises a hollow glass body 120 filled with a gas, which gas is excited into generating light through the supply of energy, and at least one ceramic electrode 140a, 140b fastened to the hollow glass body for the capacitive coupling of energy into the gas inside the hollow glass body 120. It is an object of the invention to simplify the manufacture of the gas discharge lamp 100. This is achieved according to the invention in that the glass material from which the hollow glass body 120 is formed and the ceramic material 140a, 140b from which the ceramic electrode is formed are chosen such that their two thermal expansion coefficients correspond at least by approximation, and in that the glass tube is fastened to the ceramic electrode through direct fusion.
Abstract:
A transparent airtight vessel 1a, a discharge medium enclosed in a transparent airtight vessel 1a and composed mainly of rare gas, a fluorescent lamp 1 provided with at least a pair of electrodes 1b, 1e which generate discharge inside the transparent airtight vessel 1a, a reflection means 2 arranged in the vicinity of the fluorescent lamp 1, and a transparent resin 3 which exists between the fluorescent lamp 1 and the reflection means 2 and contacting with both of them. The transparent resin 3 conducts heat generated by the fluorescent lamp 1 to the reflection means 2 and promotes the heat radiation. The heat radiation of the rare gas discharge lamp is then promoted and the decrease of the light emitting efficiency is suppressed.