Color illumination system for spatial light modulators using...

Details Color illumination system for spatial light modulators using... Color illumination system for spatial light modulators using...

G - Physics

02

B

G02B 27/18 (2006.01) G02B 27/10 (2006.01) G02F 1/01 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2435858

A digital projection apparatus (10) for projection of a multicolor image uniformizes polychromatic light from a light source (12) and provides magnification to the uniformized illumination beam using a base condenser relay (80), providing a reduced numerical aperture for conditioning at a dichroic separator (27). For each monochromatic component color provided from the dichroic separator (27), a reducing relay (82) then demagnifies the illumination beam to provide source illumination to a spatial light modulator (30) at an increased numerical aperture. As a result, color shading across the field is minimized and brightness is optimized.

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