发明授权
US07635950B2 Short-arc type high pressure discharge lamp having gaps formed among electrode axes, metal foils and a glass material surface 有权
在电极轴,金属箔和玻璃材料表面之间形成间隙的短弧型高压放电灯

Short-arc type high pressure discharge lamp having gaps formed among electrode axes, metal foils and a glass material surface
摘要:
A short-arc type high pressure discharge lamp in which durability is improved and a lamp apparatus including the same is provided.Glass material portions 52A into which glass material enters respectively are provided on both sides of an electrode axis 5402 between the outer circumferential surface 5406 thereof and a curved portion 58 of a sealed metal foil 56, and a gap S3 being continuous with a sealed space 60 remains among the glass material portion 52A, the outer circumferential portion 5406 of the electrode axis 5402, and the curved portion 58. An angle formed by a surface 52-1 of the glass material portion 52A facing the gap S3 and the curved portion 58 is an obtuse angle φ. In other words, an angle formed by the surface 52-1 of the glass material portion 52A facing the gap S3 and a surface 5602 of the curved portion 58 of the sealed metal foil 56 is the obtuse angle φ.
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