Compact color illumination device

Details Compact color illumination device Compact color illumination device

2007-05-22

2007-05-22

Husar, Stephen F (Department: 2875)

Illumination

Plural light sources

With modifier

C362S231000, C362S243000, C362S342000, C362S343000, C359S570000, C359S572000

Reexamination Certificate

active

10904860

ABSTRACT:
The present invention provides a compact color illumination device (100) for emitting collimated light. The illumination device comprises a reflector cup (102), a blazed diffraction grating (108) formed on the inner surface of the reflector cup, and a plurality of light emitting sources (110) positioned linearly in a focal plane of the reflector cup. Each light emitting source emits a different color of light that is incident on the blazed diffraction grating. The light emitted by the light emitting sources is reflected by the blazed diffraction grating, wherein the reflected light is collimated.

REFERENCES:
patent: 6474845 (2002-11-01), Mabe et al.
patent: 2002/0191394 (2002-12-01), Coleman et al.

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