Liquid crystal stereoscopic viewer

Details Liquid crystal stereoscopic viewer Liquid crystal stereoscopic viewer

1972-09-25

1977-05-03

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

325 36, 325 66, 343225, 350133, 350160LC, 352 57, 352 63, H04N 958, G03B 3516

Patent

active

040218465

ABSTRACT:
An optical device, useful for three-dimensional stereo viewing not requir any mechanical shuttering, including two liquid crystal lenses, each comprising: (1) a thin layer of liquid crystal material, preferably nematic liquid crystal; (2) two plates of conductively-coated transparent material enclosing the liquid crystal, each plate being connectable to a source of voltage, and each plate being insulated from the other; (3) a front polarizing sheet forming the outside surface of the crystal lens; and (4) a rear polarizing sheet forming the inner surface of the crystal lens. The axes of polarization of the front and rear polarizing sheets are at right angles to each other, with the result that maximum light transmission through each of the lenses occurs when no voltage is applied across the conductively-coated plates, and minimum light transmission occurs when a voltage is applied across the coated plates.

REFERENCES:
patent: 1792752 (1931-02-01), Michelssen
patent: 2055584 (1936-09-01), Okolicsanyi
patent: 3261977 (1966-07-01), Van Der Velden
patent: 3408133 (1968-10-01), Lee
patent: 3576364 (1971-04-01), Zanoni
patent: 3642348 (1972-12-01), Wysocki
patent: 3659111 (1972-04-01), Weaver
patent: 3731986 (1973-05-01), Fergason
patent: 3737567 (1973-06-01), Kratomi
patent: 3756694 (1973-09-01), Soree et al.

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