Patent ID: 7551243
Filing Date: 2009-06-23
Classification: G02B,G02F

Abstract:
1. A lens for use in a lighting arrangement, said lens comprising: a light guiding region, said light guiding region being shaped to direct light from a light source toward a region of said lens located on the periphery of said lens; a lens surface, said lens surface having reflection regions for reflecting light from said light source back into said lens and transmission channels for transmitting light from said light source outside said lens, a characteristic of said transmission channels varying as a function of the distance from the location of said light source so as to create substantially uniform average light distribution for areas of said lens positioned at various distances with respect to said light source; and a light guiding cavity, said light guiding cavity includes a plurality of convex lens sections interleaved with a plurality of concave lens sections to distribute light originating from said light source toward vertices of said lens.