Optical system for projection display

Details Optical system for projection display Optical system for projection display

1993-04-12

1996-09-03

Shafer, Ricky D.

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

359225, 359618, 359640, 359833, 359834, 359837, 359850, 359865, 353 81, G02B 504, G02B 508, G02B 2608, G02B 2710

Patent

active

055529224

ABSTRACT:
Disclosed is a projection system wherein light provided from a source passes through a prism and is then incident on an array of reflecting elements which are individually adjustable between a first and second position. Light reflected from each element re-enters the prism. Light from elements in the first position pass through the prism and into a lens. Light from elements in the second position travel through the prism, but do not enter the lens. The principal plane of the lens and the plane in which the elements are located are each parallel to the adjacent surface of the prism.

REFERENCES:
patent: 1713213 (1929-05-01), Bissiri
patent: 1984683 (1934-12-01), Jenkins
patent: 2456521 (1948-12-01), Maxwell
patent: 3161726 (1964-12-01), Todt
patent: 3186115 (1965-06-01), Todt et al.
patent: 4680579 (1987-07-01), Ott
patent: 4783156 (1988-11-01), Yokota
patent: 4948228 (1990-08-01), Keens
patent: 4969730 (1990-11-01), Van Den Brandt

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