Patent ID: 9709242
Date: 2017-07-18
CPC Classifications: F21V,F21Y,G02B

Claim:
1. A luminaire comprising: a shell integrator comprising a hollow body of transparent material with inner and outer refractive surfaces formed as arrays of lenslets, wherein: each lenslet of the array on the inner refractive surface is paired with a respective associated lenslet of the array on the outer refractive surface; each lenslet of the inner surface is configured to image a common source region in a middle of an interior of the hollow body onto the respective associated lenslet of the outer surface, wherein there is a space between the common source region and the inner refractive surface; and each lenslet of the outer surface is configured to form a virtual image of the respective associated lenslet of the inner surface, said virtual image having an apparent position at the common source region; and comprising a light-guide that follows at least one of said surfaces of the hollow body from an inlet end at a central region of the surface to an outlet end at a rim of the hollow body, the light-guide inlet end being shaped to receive light from the common source region and direct such light along the light-guide; a light emitter at the common source region; and a light sensor at the outlet end of the light-guide, operative to receive light from the light emitter through the light-guide, and to control the light emitter by negative feedback.