Optical integrating chamber lighting using multiple color...

Details Optical integrating chamber lighting using multiple color... Optical integrating chamber lighting using multiple color...

2005-04-25

2009-12-01

Truong, Bao Q (Department: 2875)

Illumination

Plural light sources

Particular wavelength

C362S243000, C362S228000

Reexamination Certificate

active

07625098

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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