Optical illumination and distortion compensator

Details Optical illumination and distortion compensator Optical illumination and distortion compensator

1979-07-30

1980-11-18

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358238, 350 55, 35 12N, H04N 718, G09C 900, G02B 1700, G02B 908

Patent

active

042348919

ABSTRACT:
This disclosure describes a method and apparatus for a visual display system in a vehicle simulator to compensate for distortion and to maximize illumination in a projected image substantially at the same time. Where a spherical mirror is interposed between a curved rear-projection screen and a viewing position, certain distortions are developed which detract from realism. Such distortions are compensated for by reflecting the image off a curve folding mirror positioned so that its major axis is substantially perpendicular to the major axis of the curved rear-projection screen. In accordance with the invention, when such compensation is achieved, the illumination of the projected image will be at substantially its brightest.

REFERENCES:
patent: 3784742 (1974-01-01), Burmham et al.
patent: 3785715 (1974-01-01), Mecklenborg
patent: 4112462 (1978-09-01), Mecklenborg

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