OPTICAL INTEGRATING CHAMBER LIGHTING USING MULTIPLE COLOR SOURCES TO ADJUST WHITE LIGHT

Title:

OPTICAL INTEGRATING CHAMBER LIGHTING USING MULTIPLE COLOR SOURCES TO ADJUST WHITE LIGHT

Document Type and Number:

WIPO Patent Application WO2005106408

Kind Code:

A3

Abstract:

A system (10) provides white light having a selectable spectral characteristic (e.g. a selectable color temperature) using an optical integrating cavity (11) to combine energy of different wavelengths from different sources with white light. The cavity has a diffusively reflective interior surface and an aperture (17) 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, and a lens a variable focusing lenses system, a collimator, a holographic diffuser and combinations thereof.

Inventors:

RAINS JACK C JR (US)
BROWN MATTHEW (US)

Application Number:

PCT/US2005/013779

Publication Date:

May 04, 2006

Filing Date:

April 25, 2005

Export Citation:

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Assignee:

ADVANCED OPTICAL TECH INC (US)
RAINS JACK C JR (US)
BROWN MATTHEW (US)

International Classes:

B25B13/14; B25B23/00; B25B23/18; G01J1/00; G01J3/10; G05D25/02; H01L31/00; H05B44/00; F21V7/22; F21V14/06; F21Y101/00; F21Y113/20; (IPC1-7): F21V1/00; F21V9/00

Foreign References:

US6149283A

2000-11-21

Other References: