Stacked LCD color projector with equal path lengths
AssigneeSayett Group, Inc.
InventorChristopher W. Mathewson
Life of this patent
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Abstract
Display apparatus for forming an image from a plurality of image modulators located at different distances from an image surface includes illumination means for forming an illumination beam, a plurality of image forming modulators disposed at different distances from the image surface, for forming a composite image on the image surface, path length correcting means disposed between the plurality of image forming modulators and the image surface, for equalizing the optical path lengths between the image forming modulators and the image surface, so that the composite image can be focused.
Claims25
Display apparatus comprising:
- illumination means for creating an illumination beam;
- first modulation means in the illumination beam having an array of modulation sites for forming an image;
- second modulation means in the illumination beam having an array of modulation sites for forming a second image offset from the array of modulation means separated by a separation distance along the illumination beam;
- path length compensating means in the illumination beam.
Display apparatus for forming an image from a plurality of image modulators located at a different distance from an image surface, comprising:
- illumination means for forming an illumination beam;
- a plurality of image forming modulators disposed at difference distances from the image surface, for forming a composite image on the image surface;
- path length correcting means disposed between the plurality of image forming modulators and the image surface for equalizing the optical path lengths between the image forming modulators and the image surface, so that the composite image can be focused.
Dependencies are inferred from the claim text.