Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Patent
1997-10-23
1999-06-29
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal system
Projector including liquid crystal cell
349 5, 349 80, G02F 11335, G02F 11347
Patent
active
059175613
ABSTRACT:
The image processing apparatus includes a lamp, fly eye lenses, an R reflective dichroic mirror, an R liquid-crystal light valve, a G reflective dichroic mirror, a G liquid-crystal light valve, a B dichroic light valve, a dichroic prism, and a projection lens for projecting a synthesized color image. In addition, a color-impurity correcting filter is provided typically between the R reflective dichroic mirror and the mirror to form an inclination angle of 10 degrees with a normal axis Y perpendicular to the incident-light axis X in the clockwise rotational direction around a normal axis Z. As a result, the color purity of the image displayed on the screen is improved and the luminance distribution of the displayed image can also be made uniform as well.
REFERENCES:
patent: 4389118 (1983-06-01), Yuasa et al.
patent: 5105265 (1992-04-01), Sato et al.
patent: 5659409 (1997-08-01), Ooi et al.
patent: 5667888 (1997-09-01), Yoshida et al.
patent: 5691785 (1997-11-01), Usui et al.
patent: 5696564 (1997-12-01), Hatakeyama
patent: 5798805 (1998-08-01), Ooi et al.
Chowdhury Tarifur R.
Maioli Jay H.
Sikes William L.
Sony Corporation
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