Holographic thin taillamp
AssigneeHughes Electronics Corporation
InventorRonald T. Smith
Life of this patent
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Abstract
A holographic rear exterior lamp for a vehicle including a light pipe (11, 51) having a first planar surface (11a, 51a) and a second planar surface (11b, 51b) that are opposite each other, and a planar entrance surface (11c, 51c) located between adjacent edges of the first planar surface and the second planar surface; a rear exterior lamp hologram (21) attached to the first planar surface of the light pipe; and a light source (20, 21) for illuminating the entrance surface such that the rear exterior lamp hologram diffracts a portion of the light that is transmitted by the entrance surface to provide rear exterior lamp illumination.
Claims9
A holographic rear exterior lamp for a vehicle, comprising:
- a light pipe having a first planar surface and a second planar surface that are opposite each other, and a planar entrance surface between adjacent edges of said first planar surface and said second planar surface;
- a rear exterior lamp hologram attached to said first planar surface of said light pipe;
- and
- means for illuminating said entrance surface with incident illumination such that transmitted illumination illuminates said rear exterior lamp hologram without reflection at said second planar surface;
- whereby said rear exterior lamp hologram diffracts a portion of said transmitted light travelling within said light pipe to provide rear exterior lamp illumination.
Dependencies are inferred from the claim text.