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Led light collection and uniform transmission system using a conical reflector with a roughed up inner surface
   
Document Number
US Patent 7125160
Issued Date
October 24, 2006
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Abstract
Apparatus for collecting light from an LED and transmitting it in a near-uniform column incudes a conical reflector having a roughed up inner surface about the base of the LED for collecting light emitted to the sides of the LED, and a lens specially designed to focus the collected light into a near-collimated beam. The lens has opposite, substantially elliptical surfaces to collect and collimate the rapidly diverging light from the LED and the reflector, and each lens surface includes a flat spot to prevent shadows from forming, thereby producing a more uniform beam.
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Number of Claims:
27
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Published
October 24, 2006
Application Number
10/977,640
Filed
October 29, 2004
US Classification
362/309   362/328 362/545 362/555 362/800
Int'l Classification
F21S   4/00   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
362/800  
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