| 摘要 |
PROBLEM TO BE SOLVED: To provide a xenon lamp eliminating cause of rupture of a discharge vessel by preventing crystallized matters from precipitating on the surface exposed to a light-emitting space of the discharge vessel, in a lamp using quartz glass with titanium oxide contained for the discharge vessel. SOLUTION: The xenon lamp 1 includes the discharge vessel 10 made of quartz glass with titanium oxide contained and equipped with a light-emitting part 2 and side tube parts 3a, 3b connected to and extended from either end of the light-emitting part 2, and has a cathode 4 and an anode 5 arranged in opposition inside the light-emitting part 2, with a lead bar 6 having the cathode 4 or the anode 5 at either end sealed with a step joint 8 fitted inside the side tube 3a, 3b each and with xenon sealed inside the discharge vessel 10. A connected part of the side tube part 3b of the cathode side and the light-emitting part 2 is made a narrowed-down part 14b, with a conductive film 16 formed on an outer surface of the narrowed-down part 14b and a portion of the outer surface of the light-emitting part 2 connected to the narrowed-down part 14b, so that the conductive film 16 is electrically connected with the cathode 4. COPYRIGHT: (C)2010,JPO&INPIT
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