High pressure discharge lamp with a base at one end

Details High pressure discharge lamp with a base at one end High pressure discharge lamp with a base at one end

2007-02-20

2007-02-20

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

C313S110000

Reexamination Certificate

active

11289445

ABSTRACT:
High-pressure lamp with a base, having an inner vessel sealed in a vacuum-tight manner, and surrounded by a sleeve part, a base having electrical terminals bearing, on one side, the inner vessel and, on the other side, the sleeve part, the reflector being of rotationally symmetrical design, and having a contour divided into at least two zonal layers, whose axial height is dimensioned such that each zone captures at least 35% of the light intensity emerging from the center of the inner vessel, and a first zone reflecting back at least 90% of the light incident on it at positive angles in relation to the lamp axis, and a second zone reflecting back at least 90% of the light incident on it at negative angles in relation to the lamp axis, and the inner vessel containing a metal halide filling, and the lamp having a specified average color temperature.

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patent: 5975733 (1999-11-01), Gonzalez Gallegos et al.
patent: 2002/0011767 (2002-01-01), Zhou et al.
patent: 38 08 086 (1989-09-01), None
patent: 0 282 100 (1988-09-01), None
patent: 1 109 199 (2001-06-01), None

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