High-pressure discharge lamp, high-pressure discharge lamp...

Details High-pressure discharge lamp, high-pressure discharge lamp... High-pressure discharge lamp, high-pressure discharge lamp...

2007-07-10

2007-07-10

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

C313S638000

Reexamination Certificate

active

10485728

ABSTRACT:
The present invention provides a high-pressure discharge lamp that uses substantially no mercury and reduces discharge flicker. The high-pressure discharge lamp is kept on with a lamp power of 50 W or lower in a stable state, and the temperature T (° C.) of the electrode at a point at a distance of 0.3 mm from the tip end to the base end in the stable state and the amount A (mol/cc) of free iodine produced when the lamp is turned off after 100 hours of on-time satisfy the formula (1):T2/A>1011.

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