Ultra-wide angle liquid crystal projector system

Details Ultra-wide angle liquid crystal projector system Ultra-wide angle liquid crystal projector system

1994-08-23

1996-03-19

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 41, 359451, 353 79, 353 94, 353122, G02F 11335

Patent

active

055007473

ABSTRACT:
An ultra-wide angle liquid crystal projector system comprising a light source, a liquid crystal panel, a curved screen, and a projection lens for projecting in accordance with light emitted by the light source an image formed on the liquid crystal panel onto the curved screen. The projection lens has a curvature of field substantially conforming to the shape of the curved screen and an angle of projection of at least 120 degrees. The projection lens is disposed with respect to the curved screen so that a distance from an exit surface of the projection lens to the curved screen is less than 3 meters.

REFERENCES:
patent: 4772098 (1988-09-01), Ogawa
patent: 4936657 (1990-06-01), Tejima et al.
patent: 5390048 (1995-02-01), Miyatake et al.
Gendai Camera Shinsho No. 76--Introduction to the Science of Lens (Last Volume), by Toshinobu Ogura, pp. 92-95.

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