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Dark field projection display
   
Document Number
US Patent 6155688
Issued Date
December 5, 2000
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Abstract
A dark field projection display includes a light source, a spatial light modulator, and an optical system for directing light from the light source onto the spatial light modulator. The optical system includes a plurality of optical subsystems and a plurality of reflectors. Each of the optical subsystems has an input aperture and is arranged to image light from the light source, the subsystems forming a spatial distribution of source images whose relative positions are different from the relative positions of the input apertures. Each of the optical subsystems further includes a plurality of reflectors disposed at the relative positions of the source images. Each of the reflectors is arranged to reflect light from a respective one of the subsystems onto the spatial light modulator.
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Number of Claims:
17
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Owner
Published
December 5, 2000
Application Number
09/145,893
Filed
September 2, 1998
US Classification
353/99   353/38
Int'l Classification
G02B   19/00   (20060101)   H04N   5/74   (20060101)   G02B   27/00   (20060101)  
Examiner
Priority Data
Sep 05, 1997 [GB] 9718741 Jan 03, 1998 [GB] 9800018
USPTO Field of Search
353/38   353/98   353/99   353/69   353/70   349/5   349/7   349/8   349/67   349/61   362/309   362/308   362/328   362/346  
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