Image projecting apparatus for producing an image for display on

Details Image projecting apparatus for producing an image for display on Image projecting apparatus for producing an image for display on

1993-12-27

1996-03-19

Groody, James J.

Television

Video display

Projection device

348766, 348757, 359 41, 359 83, H04N 931, G02F 11335

Patent

active

055006922

ABSTRACT:
An image projector apparatus for producing an image for display on a projection screen. The image projector apparatus includes a plurality of first microlenses each receiving light from a light source, a liquid crystal display having a plurality of pixels each adapted to receive light from a respective one of the first microlenses and provide respective image light therefrom in response to image information supplied thereto, a plurality of second microlenses each receiving the image light from a respective one of the pixels and projecting parallel image light therefrom, and a projection lens receiving the parallel image light from each of the second microlenses and projecting the same onto the projection screen. The projection lens may be moved or positioned such that an optical center axis thereof is offset from an image center axis of the liquid crystal display so as to eliminate or minimize a so-called keystone distortion.

REFERENCES:
patent: 4639106 (1987-01-01), Gradin
patent: 5052783 (1991-10-01), Hamada
patent: 5126863 (1992-06-01), Otsuka et al.
patent: 5144462 (1992-09-01), Otsuka et al.
patent: 5261645 (1993-11-01), Huffman
Patent Abstracts of Japan vol. 15, No. 59 (P-1165) 13 Feb. 1991 & JP-A-02 287 586 (Sony) 27 Nov. 1990.

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