Light source including multiple light emitting devices...

Details Light source including multiple light emitting devices... Light source including multiple light emitting devices...

2007-11-13

2007-11-13

Perkey, W. B. (Department: 2851)

Optics: image projectors

Plural

C353S033000, C353S037000, C349S008000, C348S801000, C348S751000, C348S757000, C362S612000

Reexamination Certificate

active

11114136

ABSTRACT:
Aspects of the invention can provide a light source that can reduce the optical system in size while enlarging a color reproducible range and achieving higher luminance. The system can include a cross dichroic prism to combine an R light, a G1light, a G2light, and a B light, and an LED R to generate the R light, an LED G1to generate the G1light, an LED G2to generate the G2light, and an LED B, disposed near the LED G2to be side by side, to generate the B light, as well as a control portion to drive these LED R, LED G1, LED G2, and LED B under control. The peak wavelengths of the G2light and the B light are adjacent to each other, and the control portion can drive the LED G2and the LED B under its control by switching in time division.

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patent: 7029129 (2006-04-01), Shimada
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patent: 2004/0263500 (2004-12-01), Sakata
patent: 1 365 598 (2003-11-01), None
patent: A 2001-042431 (2001-02-01), None

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