Optical projection system and image display device having...

Details Optical projection system and image display device having... Optical projection system and image display device having...

2008-05-13

2008-05-13

Koval, Melissa Jan (Department: 2862)

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

C353S077000, C353S098000, C353S102000, C353S121000, C359S364000, C359S366000, C359S692000

Reexamination Certificate

active

07370977

ABSTRACT:
An optical projection system which creates pincushion distortion of an image and then creates a barrel distortion of the pincushion-distorted image to compensate for the pincushion distortion and then projects an enlarged image without substantial distortion onto an image display surface. An embodiment includes a polynomial reflector to compensate for the pincushion distortion, to enlarge an image, and to project the enlarged image toward a screen.

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patent: 2002-107618 (2002-04-01), None
patent: 2002-70600 (2002-09-01), None

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