Optical integrating chamber lighting using one or more...

Details Optical integrating chamber lighting using one or more... Optical integrating chamber lighting using one or more...

2008-04-30

2009-10-20

Truong, Bao Q (Department: 2875)

Illumination

Plural light sources

Particular wavelength

C362S230000, C362S227000

Reexamination Certificate

active

07604375

ABSTRACT:
A system provides white light having a selectable spectral characteristic (e.g. a selectable color temperature) using an optical integrating cavity to combine energy of different wavelengths from different sources with white light. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined light. Control of the intensity of emission of the sources sets the amount of primary color light of each wavelength added to the substantially white input light output and thus determines a spectral characteristic of the white light output through the aperture. A variety of different elements may optically process the combined light output, such a deflector, a variable iris, a lens, a variable focusing lens system, a collimator, a holographic diffuser and combinations thereof.

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