Stereoscopic image projection apparatus and telecentric zoom len

Details Stereoscopic image projection apparatus and telecentric zoom len Stereoscopic image projection apparatus and telecentric zoom len

1997-04-03

1999-11-09

Spyrou, Cassandra

Optical: systems and elements

Stereoscopic

With right and left channel discriminator

359464, 359462, 353 7, 353 8, 349 15, 348 57, 348 58, G02B 2726, G03B 2100, H04N 947, G02F 1133

Patent

active

059825383

ABSTRACT:
A stereoscopic image projector has a light valve controlled by two image signals. The light valve produces a polarized raster image in which some rasters are modulated by the first image signal and other rasters by the second image signal. A polarization switch changes the polarization of rasters modulated by the second image signal, thereby creating a stereoscopic image, which is projected through a projection lens onto a screen, and viewed through polarizing eyeglasses. A color stereoscopic image is obtained by using three light valves and three polarization switches, one for each of the three primary colors, and combining their images for projection through a single projection lens. The projection lens is preferably a telecentric zoom lens consisting of three lens groups.

REFERENCES:
patent: 3858001 (1974-12-01), Bonne
patent: 4582396 (1986-04-01), Bos et al.
patent: 4850685 (1989-07-01), Kamakura et al.
patent: 4981352 (1991-01-01), Tejima et al.
patent: 4995718 (1991-02-01), Jachimowicz
patent: 5073013 (1991-12-01), Sonehara et al.
patent: 5113285 (1992-05-01), Franklin et al.
patent: 5239372 (1993-08-01), Lipton
M. Imai et al "Stereoscopic Projection Display Using Liquid Crystal TV Panels" pp. 5-84.
"Display Tech, Inc. "--Jan. 1991.
"Meadowlar Optics" pp. 8-9.

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