High pressure discharge lamp

Details High pressure discharge lamp High pressure discharge lamp

2006-04-25

2006-04-25

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having lead-in shield

C313S332000

Reexamination Certificate

active

07034460

ABSTRACT:
A high pressure discharge lamp with a trigger wire wound around a side tube portion has the structure in which the side tube portion has a first glass portion extending from a luminous bulb and a second glass portion provided in at least a portion of the inside of the first glass portion, and in which the second glass portion contains at least one substance of Li, Na, and K of from 0.001 wt % to 1.0 wt % inclusive. This structure provides a high pressure discharge lamp operable with a drastically reduced starting voltage.

REFERENCES:
patent: 6897612 (2005-05-01), Horiuchi et al.
patent: 2002/0021092 (2002-02-01), Seki et al.
patent: 08-087984 (1996-04-01), None
patent: 09-265947 (1997-10-01), None

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