Abstract:
PROBLEM TO BE SOLVED: To provide a robust ceramic discharge tube for a metal halide lamp. SOLUTION: The discharge tube 10 for a lamp has: a hollow ceramic body 12; and two ceramic capillary tubes 14 extended from the same side of a body. The two capillary tubes are respectively placed and adapted so as to accept each electrodes 16 extended into the body. A web 20 is provided for connecting two capillary tubes each other along the lengthwise direction of the two capillary tubes. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge case for a lamp with electrodes expanded from each other. SOLUTION: The ceramic electric discharge case for a high-intensity discharge lamp is provided with a hollow body and two capillary tubes fixed on the body. The capillary tube has each electrode and electrode parts inside the body are placed separated from each other with a gap and furthermore, have a longitudinal axis line not positioned on the same plane. Namely, in contrast to a conventional arrangement where the longitudinal axis line is placed on the same plane, the capillary tube is moved (actually rotated) to a predetermined position, and at this position, a first plane specified by a longitudinal axis line of one of the capillary tubes and a first point on the body where the second capillary tube is fixed is crossed only at the first point by the longitudinal axis line of the second capillary tube. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve total transmittance in an alumina discharge container, having a submicron crystal grain size which is doped with MgO. SOLUTION: The alumina discharge container, having a submicron crystal grain size doped by MgO, is subjected to annealing, after hot isostatic sintering. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high intensity discharge lamp capable of extinguishing as well as providing a consistent lighting color throughout the extinction range. SOLUTION: The discharge lamp comprises a translucent envelope formed of a ceramic, a first electrode assembly, a second electrode assembly, an inert filling gas in an enclosed container having a cold filling pressure of 100-500 kPa, and a filling material containing NaI, CeI 3 , and DyI 3 . The envelope has a wall part defining an enclosed volume, and the first electrode assembly and the second electrode assembly extend to the volume to contact the enclosed volume by sealing type through the wall part from the outside of the lamp, and the filling material is constituted so as not to contain an element of mercury, indium, gallium, or zinc, or a compound containing these elements. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve structural consistency of a mount for an arc discharge lamp. SOLUTION: This mount is provided with an outside tube and a holding clip for an offset conductive lead wire attached to the fourth section of the offset conductive lead wire. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electrode improving maintenance property in a steady status by enlarging a tip area and obtaining good start maintenance property without spot attachment in a high luminance discharge lamp. SOLUTION: The high luminance discharge lamp is formed with glow generation concave parts provided on one or a plurality of external surfaces of an electrode head. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve a manufacturing method of an arc discharge container. SOLUTION: In an assembly for forming a hollow ceramic arc discharge container, a first section 12 equipped with a first joining edge part 17 and a second section 14 provided with a second joining edge part 15 are installed, the first joining edge part 17 has a convex sealing surface having a radius of curvature R1, the second joining edge part 15 has a concave sealing surface having a radius of curvature R2, and the hollow ceramic discharge container is formed when R2 is larger than R1 and the first section 12 and the second section 14 are joined to each other. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high-output halogen lamp capable of further uniformly distributing light. SOLUTION: This halogen lamp includes: an envelope having a spherical head part at a first end and a second end opened for connecting it to a base; a pair of insulation bridges arranged in the envelope and spatially separated; a multisegment filament structure positioned between the pair of bridges, wherein the filament structure has a series of filament segments arranged in an annular pattern, and another filament segment arranged at the center of the annular pattern and a lamp; and at least two support leads connected to the spatially separated insulation bridges and extended through support segments connected to ends of the series of filament segments. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic discharge vessel having aluminum oxynitride which controls or inhibit formation of air bubbles in a frit seal of a ceramic discharge vessel existing in a sealing region, thereby avoiding the defects of the prior arts. SOLUTION: In the ceramic discharge vessel having a ceramic body and at least one seal region comprised of an aluminum oxynitride material, the seal region has a surface layer for contacting a frit material, wherein the surface layer is less reactive than the aluminum oxynitride material with respect to the frit material during sealing. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce unevenness of lamp operation by limiting the use of calcium iodide in a metal-halide filling. SOLUTION: The metal-halide fill for a discharge lamp has a mixture of mercury and metal-halide salt. The mixture of the metal-halide salt contains sodium iodide of about 1 mole%-50 mole%, rare-earth material iodide of about 15 mole%-50 mole%, magnesium iodide of about 10 mole%-30 mole%, indium iodide of about 10 mole%-25 mole% and calcium iodide of about 0 mole%-25 mole%. The total quantity of the calcium iodide and the magnesium iodide in the mixture is about 20 mole%-45 mole%. The metal-halide fill of this composition is provided. COPYRIGHT: (C)2006,JPO&NCIPI