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Light guide apparatus for use in rear projection display environments
   
Document Number
US Patent 7421180
Issued Date
September 2, 2008
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Abstract
A display apparatus comprising a plurality of light guides and method for producing such an apparatus is disclosed. The display apparatus comprises a plurality of substantially totally internally reflecting (TIR) light guides fashioned to expand a small original optical representation from an input of each light guide to a larger optical representation output at an output of each light guide. Each of the plurality of substantially totally internally reflecting light guides is separated from other substantially totally internally reflecting light guides by a material having a lower refraction index than the core material.
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Number of Claims:
26
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Published
September 2, 2008
Application Number
10/698,829
Filed
October 31, 2003
US Classification
385/133   348/E5.138 348/E5.143
Int'l Classification
G02B   6/00   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
385/2   385/133  
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