Patent ID: 9239141
Filing Date: 2016-01-19
CPC Classification: F21V,F21W,F21Y,G09F

Claim Text:
1. An apparatus for providing illumination to a surface at an oblique angle comprising: a plurality of first optical elements each have a first body, a first light source providing a first illumination of a first color to said first body, and a first front face of said first body disposed at an oblique angle with respect to a target surface, in which said first illumination is spectrally non-uniform from said first color along a portion of the target surface; and a plurality of second optical elements each having a second body, a second light source providing second illumination to said second body of a different color than said first color to compensate for the spectral non-uniformity of the first light source, and a second front face of said second body disposed at an oblique angle with respect to the target surface, in which said second body directs said second illumination to said portion and said second illumination combines said first illumination to provide along said portion combined illumination that is spectrally uniform of said first color.