High-efficiency polarizing arrangement and projection apparatus

Details High-efficiency polarizing arrangement and projection apparatus High-efficiency polarizing arrangement and projection apparatus

1998-03-13

2000-02-22

Nguyen, Thong

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359483, 362 19, 353 20, G03B 2114

Patent

active

060287039

ABSTRACT:
In the present projection apparatus, R, G and B lights in the form of a S polarized light emitted from a fly-eye lens and a field lens are separated and the S polarized light is converted to a P polarized light so that it is illuminated onto a light valve. The S polarized light separated by the polarization beam splitter is illuminated onto the light valve converted to the P polarized light without being discarded, illuminance of the light onto the light valve is uniform and its polarization azimuth is arranged in the form of the P polarized light.

REFERENCES:
patent: 5387953 (1995-02-01), Minoura et al.
patent: 5535054 (1996-07-01), Shibuya
patent: 5757547 (1998-05-01), Rodman et al.
patent: 5764310 (1998-06-01), Yamagishi
patent: 5865521 (1999-02-01), Hashizume et al.

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