Patent ID: 7145125
Filing Date: 2006-12-05
Classification: F21K,F21Y,G01J

Abstract:
1. An apparatus for emitting radiant energy, comprising: an integrating cavity, having a diffusely reflective interior surface and an aperture for allowing emission of combined radiant energy; a plurality of sources of radiant energy coupled to supply radiant energy into the interior of the integrating cavity; wherein each of the sources emits radiant energy of a different wavelength, and the combined radiant energy emitted through the aperture includes radiant energy of the different wavelengths; control circuitry coupled to the sources for establishing output intensity of radiant energy of each of the sources to set a spectral characteristic of the combined radiant energy emitted through the aperture; and a deflector having a reflective inner surface coupled to the aperture to deflect at least some of the combined radiant energy.