System for controlling contrast in projection displays

Details System for controlling contrast in projection displays System for controlling contrast in projection displays

1997-07-24

1999-07-20

Dowling, William

Optics: image projectors

Light shield, mask, hood, or diaphragm

353 38, G03B 2114

Patent

active

059247835

ABSTRACT:
An optical projection system has a display cell that is configured to project a display image in response to light striking the display cell. The system has a light source that is configured to project a beam of light and a lens array that is positioned to intercept the beam and generate multiple beamlets of the beam. An aperture assembly is positioned to intercept the beamlets and is configured to selectively control which portions of the images contained in the beamlets strike the display cell.

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