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Discharge lamp and method of manufacturing the same 发明授权

2023-07-28 2350 71K 0

专利信息

申请日期 2025-07-07 申请号 JP2001255515
公开(公告)号 JP4912547B2 公开(公告)日 2012-04-11
公开国别 JP 申请人省市代码 全国
申请人 ASAHI OPTICAL CO LTD
简介 PROBLEM TO BE SOLVED : To provide a durable discharge lamp which can be manufactured safely by sealing rare gas into a sealing bulb at precise pressure without applying temporary pressure to the sealing bulb to prevent bursting. SOLUTION : An auxiliary tank 20 is branched from a tip tube connected to a sealing bulb 10 of a discharge lamp 1. Mercury or metal halide, etc., is temporarily stored in this auxiliary tank 20. An exhaust system 14 connected to the tip tube 13 exhausts contaminant evaporated from the sealing bulb 10 by heating it with a heating system 21 into vacuum exhaust air. In the next step, mercury, etc., is moved into the sealing bulb 10 from the auxiliary tank 20 and rare gas is injected from a gas cylinder 15 and condensed into solid or liquid with a cooling measures 19 such as liquid nitrogen and finally the tip tube 13 is cut off to complete the discharge lamp 1.


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