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Light pipe optical coupling utilizing convex-shaped light pipe end
 
   
Document Number
US Patent 7215863
Issued Date
May 8, 2007
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Inventors
Arenella; Kenneth (Wappingers Falls, NY)
Qualters; Kevin R. (LaGrangeville, NY)
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Abstract
A light transmission device is provided including a light pipe having two ends, one end being an ellipsoidal-shaped end. A recess is configured within the ellipsoidal-shaped end for reception of a light source that transmits light into the light pipe. The recess includes an interior concave wall, and the light source is at least partially received in the recess to face the interior concave wall via which light is transmitted into the light pipe. The ellipsoidal-shaped end further includes a curved surface configured to facilitate collection of light into the light pipe when the light source is at least partially received in the recess in the ellipsoidal-shaped end. The ellipsoidal-shaped end includes a first focal point and a second focal point, wherein the recess in the ellipsoidal-shaped end intersects the first focal point, and the second focal point is disposed adjacent to or within the light pipe.
Drawing
Light pipe optical coupling utilizing convex-shaped light pipe end - US Patent 7215863 Drawing
Drawing from US Patent 7215863
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Number of Claims:
20
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Published
May 8, 2007
Application Number
11/412,765
Filed
April 27, 2006
US Classification
385/133   385/146
Int'l Classification
G02B   6/00   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
385/133   385/146  
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