Optical illumination system of projector using optical...

Details Optical illumination system of projector using optical... Optical illumination system of projector using optical...

2005-03-22

2005-03-22

Epps, Georgia (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S627000, C353S020000

Reexamination Certificate

active

06870683

ABSTRACT:
An optical device capable of homogenizing luminous energy and homogenizing polarized light simultaneously, and an optical illumination system of a projector having decreased volume by using the optical device for homogenizing luminous energy and polarized light has small volume, but is able to homogenize luminous energy and transform non-polarized light a polarized light simultaneously. It is possible to attain homogeneous luminous energy and light efficiency improvement on a level, which are equal to those attained by using conventional Fly eye lens and PBS array, by using the above-described optical device for homogenizing luminous energy and polarized and the volume of the optical system can be decreased and be lightweight.

REFERENCES:
patent: 5387953 (1995-02-01), Minoura et al.
patent: 6478431 (2002-11-01), Sawamura et al.
patent: 2001042432 (2001-02-01), None
patent: 02001311912 (2001-09-01), None
Computer Translation of JP2001-042432—“Optical System for Illumination”; Feb. 16, 2001; Sanyo.

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