Patent ID: 7180229
Filing Date: 2007-02-20
Classification: F21V,H01J

Abstract:
1. A high-pressure discharge lamp with a base at one end, having an inner vessel which is sealed in a vacuum-tight manner, said inner vessel being surrounded by a reflector, and having a base, the inner vessel resting in a neck part of the reflector, characterized in that the reflector is of rotationally symmetrical design, and the reflector contour being 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.