Color display device having single illuminating system

Details Color display device having single illuminating system Color display device having single illuminating system

2005-06-21

2008-05-06

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By refraction at beam splitting or combining surface

C348S750000, C353S081000

Reexamination Certificate

active

07369318

ABSTRACT:
A display device is disclosed herein. The display device includes a condenser unit, an illumination lens system, an optical modulation system, a filter system and a projection system. The condenser unit converges polarized light output from a plurality of light sources, and outputs the converged polarized light. The illumination lens system converts the polarized light into linear parallel light. The optical modulation system produces diffracted light beams having a plurality of diffraction orders by optically modulating the polarized light. The filter system passes some of the diffracted light beams having desired orders therethrough. The projection system focuses the diffracted light beams passed through the filter system, and projects the focused diffracted light beams onto a screen.

REFERENCES:
patent: 5237435 (1993-08-01), Kurematsu et al.
patent: 5374947 (1994-12-01), Takahashi et al.
patent: 6764183 (2004-07-01), Okazaki
patent: 2006/0119941 (2006-06-01), Yang et al.
patent: 2006/0119942 (2006-06-01), Yang et al.

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