Light pipe, color illumination system adopting the light...

Details Light pipe, color illumination system adopting the light... Light pipe, color illumination system adopting the light...

2006-06-27

2006-06-27

Perkey, W. B. (Department: 2851)

Optics: image projectors

Prism in light path

C353S033000, C353S084000, C362S560000, C362S583000, C349S057000

Reexamination Certificate

active

07066604

ABSTRACT:
A light pipe for separating incident light according to color, a color illumination system adopting the light pipe, and a projection system adopting the color illumination system are provided. Since the projection system is a single-panel projection system adopting a scrolling unit, its optical configuration is simplified. Also, the light pipe of the projection system is comprised of different-sized color separation units, thus improving the color gamut and the color temperature. Further, the light pipe includes color selection polarizers, each of which changes the polarization direction of a color beam with a specific wavelength, thereby improving light efficiency.

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Patent Abstracts of Japan, vol. 2000, No. 01, Jan. 31, 2000 corresponding to JP 11 281930 A (Mitsubishi Electric Corp), Oct. 15, 1999.

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