Patent ID: 9164268
Filing Date: 2015-10-20
Classification: F21V,F21Y,G02B

Abstract:
1. A light-mixing lens, comprising: a lens body disposed about an optical axis and characterized by an output surface and an input surface and a peripheral surface extending between the input and output surfaces, said input surface forming a cavity for receiving light from at least one light source, said cavity having a peripheral surface shaped to refract at least about 80 percent of the light received at the input surface from the at least one light source away from the optical axis and to the peripheral surface of the lens body, said peripheral surface being configured such that light propagating thereto from the cavity is totally internally reflected to the output surface for exiting the lens body, wherein said peripheral surface of the cavity comprises a proximal portion configured to present a concave surface to light received from the at least one light source and a distal portion configured to present a convex surface to light received from the at least one light source, and wherein said distal convex portion tapers to a point on or near the optical axis.