High pressure discharge lamp and lamp unit

Details High pressure discharge lamp and lamp unit High pressure discharge lamp and lamp unit

2005-11-15

2005-11-15

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

C313S624000, C313S625000, C313S634000

Reexamination Certificate

active

06965202

ABSTRACT:
A high pressure discharge lamp includes a luminous bulb enclosing a luminous substance therein; and a sealing portion for retaining airtightness of the luminous bulb. The sealing portion has a first glass portion extending from the luminous bulb and a second glass portion provided at least in a portion inside the first glass portion, and the sealing portion has a portion to which a compressive stress is applied.

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