Patent ID: 8833996
Filing Date: 2014-09-16
Classification: F21K,F21S,F21V,F21Y,G02B,H01L

Abstract:
1. An illumination system comprising: multiple light emitting elements (LEEs); a first light guide extending along a first plane, the first light guide being positioned and arranged to receive light from at least some of the LEEs and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide being positioned and arranged to receive light from at least some other of the LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic positioned and arranged to receive light from the first light guide and direct the light in a first angular range and a second angular range; and a second redirecting optic positioned and arranged to receive light from the second light guide and direct the light in a third angular range and a fourth angular range, wherein each of the light guides and the redirecting optics has a longitudinal dimension that is (i) parallel to the first plane and (ii) orthogonal to the first and second directions, wherein the LEEs are distributed along the longitudinal dimension, and wherein the first, second, third and fourth angular ranges are different, such that