发明授权
US06429577B1 Discharge lamp with outer tube comprising silicon dioxide and boron
有权
具有包含二氧化硅和硼的外管的放电灯
- 专利标题： Discharge lamp with outer tube comprising silicon dioxide and boron
- 专利标题（中）： 具有包含二氧化硅和硼的外管的放电灯
-
申请号： US09326951申请日： 1999-06-07
-
公开(公告)号： US06429577B1公开(公告)日： 2002-08-06
- 发明人: Hideaki Kiryu , Kazuhisa Tanaka , Takeshi Saitoh
- 申请人： Hideaki Kiryu , Kazuhisa Tanaka , Takeshi Saitoh
- 优先权： JP10-164922 19980612; JP10-330646 19981120
- 主分类号： H01J102
- IPC分类号： H01J102
摘要：
A discharge lamp comprising an arc tube containing a pair of electrodes in a light-emitting portion and an outer tube that envelops the light-emitting portion and is at least partly fused to the arc tube, wherein the outer tube comprises silicon dioxide in the range from 90 to 99.88 wt. % and boron in the range from 0.12 wt. % or more. The discharge lamp can inhibit the arc tube from deforming when the outer tube and arc tube are fused to each other by adjusting a softening temperature of the outer tube to an appropriate temperature and can realize a high accuracy of luminous intensity distribution.