Full-color projector system with a tricolor-separating prism

Details Full-color projector system with a tricolor-separating prism Full-color projector system with a tricolor-separating prism

1985-07-12

1987-08-18

Arnold, Bruce Y.

Optics: image projectors

Plural projection paths with single light source

350337, 353 31, 358 61, G02F 113, G02B 530, G02B 2718, H04N 931

Patent

active

046873015

ABSTRACT:
A liquid crystal light valve projector is disclosed which includes a first color separator responsive to unmodulated polarized light for reflecting light of a first primary color, for transmitting the remaining portion of the incident unmodulated polarized light, and for internally reflecting incident light; a transparent plate window for transmitting incident unmodulated polarized light to the first color separator and for internally reflecting the light of the first primary color reflected by the first color separator; a second color separator responsive to the light transmitted by the first color separator for reflecting light of a second primary color and for transmitting the remaining portion of the incident light which includes a third primary color, whereby the second color separator reflects the light of the second primary color to the first color separator which internally reflects such second primary color light; and light modulators respectively responsive to the light of the first, second, and third primary colors.

REFERENCES:
patent: 4425028 (1984-01-01), Gagnon et al.
patent: 4461542 (1984-07-01), Gagnon
patent: 4464019 (1984-08-01), Gagnon
patent: 4544237 (1985-10-01), Gagnon

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