Patent ID: 8354781
Filing Date: 2013-01-15
Classification: F21S,F21V

Abstract:
1. An automotive lamp assembly to evenly illuminate an elongated rectangular shell type secondary reflector, the lamp assembly comprising: a light source emitting light in at least an axial direction; a light guide with an input window facing the light source for the receipt of light, a body section axially extending in a forward (Z) direction away from the input window, having an internally reflective surface and an output window perpendicular to the axis; and a primary reflector having a reflective surface positioned opposite the output window and having an axially projected size and shape sufficient to span the output window, the reflector in a first plane (XZ) containing the Z axis, and a first perpendicular (X) to the axis (the medial XZ plane), having a cross section providing a first reflection pattern of light from the light guide at angles varying from 0 to 90 degrees from the Z axis in the first plane (XZ); and in a second plane (YZ) containing the Z axis and a second perpendicular (Y) to the Z axis, (the medial YZ plane), having a cross section providing a second reflection pattern of light from the light guide at angles from 0 to 90 degrees to the Z axis in the second plane (YZ), different from the first reflection pattern; and in planes containing the Z axis intermediate the first plane (XZ) and the second plane (YZ) having a cross section being a combination of the first cross section (XZ) and the second cross section (YZ) providing a reflection pattern of light from the light guide at angles from 0 to 90 degrees intermediate the first reflection pattern and the second reflection pattern.