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US 4,734,829 AGranted
Short arc lamp image transformer
AssigneeThe Perkin-Elmer Corporation
InventorsFrederick Y. Wu, David A. Markle
Life of this patent
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Abstract
A light transformer for converting light from a short arc lamp into an arcuate shape of uniform intensity. Mirror means associated with the short arc lamp projects light from the short arc lamp as a plurality of separate images conforming to the desired arcuate shape onto a plurality of reflecting facets also formed in the desired arcuate shape. Light pipe means formed in the desired arcuate shape is disposed at one end to receive light images via the facets and to emit light at the other end in the desired arcuate shape.
Claims18
A light transformer, comprising:
- a point source of light;
- mirror means associated with said point source of light for projecting said light as a plurality of separate images conforming as a group to a desired shape;
- a like plurality of reflecting facets formed as a group to said desired shape, each of said facets disposed to receive respective ones of said images and oriented to reflect said images such that the chief ray of each image is parallel to the chief rays of adjacent images;
- light pipe means formed in said desired shape for receiving at one end said images whereby light emitted at the other end of said light pipe means conforms to said desired shape.
1 more element
Dependencies are inferred from the claim text.