Patent ID: 7973996

Claim:
An optical system for a digital light projection system, the optical system comprising: at least one LED array, wherein each LED array comprises a plurality of LEDs; and an optical concentrator element positioned substantially adjacent to each LED array, wherein the concentrator element has a complex conic shape along a direction longitudinally from an input surface of the concentrator element to an output surface of the concentrator element, wherein the complex conic shape of the concentrator element includes at least one side which comprises a first side surface portion and a second side surface portion, wherein the first side surface portion is defined by a first equation and the second side surface portion is defined by a second equation which differs from the first equation, wherein the first side surface portion and the second side surface portion are positioned along the direction longitudinally from the input surface of the concentrator element to the output surface of the concentrator element, wherein each concentrator element totally internally reflects light emitted from the plurality of LEDs within the corresponding LED array so as to provide substantially uniform light at the output surface of each concentrator element, and wherein the light totally internally, reflected by the concentrator element includes light totally internally reflected via both the first side surface portion and the second side surface portion.