| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp capable of thinning, regarding the lamp in which a spacer made of a metal thin plate which concentrically supports an inner tube relative to an outer tube by interposing band plate parts between the inner tube and outer tube for holding the gap between those constant is attached on a tip of the inner tube, thickness of shadow caused by the band plate parts of the spacer which shield light radiated through the inner tube. <P>SOLUTION: Band plate parts 9 of a spacer S, which protrude from a circumferential edge of a center plate part 8 of the spacer S which is attached to and supported by an exhaust tube 7 by inserting the exhaust tube 7 protruding on a tip center of an inner tube 3 through a hole 10 and extending in a direction toward a base end part 3b of the inner tube 3, incline in a circumferential direction of the inner tube 3 relative to an optical axis L of a lamp 1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
