Patent ID: 9217554
Filing Date: 2015-12-22
Classification: F21V,F21W,F21Y

Abstract:
1. An optical element for illuminating a surface at an oblique angle comprising: a body having a base with a cavity for receiving a light source, a front face, and outer sides providing total internal reflection; said body is asymmetrically shaped having an optical axis extending through said base and said front face, and minor and major axes orthogonal to each other and to said optical axis in which said body is elongated along said major axis; said body is positionable by tilting said front face so that said optical axis is at an oblique angle with respect to a target surface to be illuminated, in which said front face extends along said major and minor axes and said front face along said major axis faces a dimension aligned with a height of the target surface; and curvature of surfaces along said cavity and said outer sides are selected to enable said body to output illumination from said front face having a distribution upon the target surface extending along the height of the target surface and along at least a portion of a width of the target surface, in which said output illumination from said body has increased intensity with increasing height along said target surface to provide at least substantially uniform illumination of said target surface along at least said height of said target surface.