Liquid crystal projector with one modulator including a member f

Details Liquid crystal projector with one modulator including a member f Liquid crystal projector with one modulator including a member f

1992-10-13

1994-12-06

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 41, 359 53, 359 67, G02F 11335, G02F 1133

Patent

active

053716175

ABSTRACT:
A display apparatus using liquid crystal devices especially having a scattering mode and a projector in the display apparatus using the liquid crystal devices. The projector includes: an illuminating means for supplying illumination light; first and second modulating means for forming rays of image light by modulating the illumination light from the illuminating means; and a projecting means for projecting the rays of image light formed by the first and second modulating means. In this projector, a member for absorbing or reflecting the light traveling towards the second modulating means through the first modulating means is provides on at least any one of the light incident side and the light outgoing side of the second modulating means.

REFERENCES:
patent: 4729640 (1988-03-01), Sakata
patent: 4904061 (1990-02-01), Aruga
patent: 5028121 (1991-07-01), Baur et al.
patent: 5105289 (1992-04-01), Sonehara et al.
patent: 5144462 (1992-09-01), Otsuka et al.
patent: 5235446 (1993-08-01), Majima
patent: 5237435 (1993-08-01), Kurematsu et al.
Patent Abstracts of Japan, vol. 015, No. 220 (May 6, 1991), Abstract of JP 3-063628 (Mar. 19, 1991).
Patent Abstracts of Japan, vol. 015, No. 372 (Sep. 19, 1991), Abstract of JP 3-146942 (Jun. 21, 1991).
Patent Abstracts of Japan, vol. 012, No. 476 (Dec. 13, 1988), Abstract of JP 63-196192 (Aug. 15, 1988).

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