Patent ID: 7448761
Filing Date: 2008-11-11
Classification: G02B,G03B

Abstract:
1. An architecture for a projector comprising a light source in the form of a lamp with a curved reflector with a distinctive focal distance for converging the light beam of the lamp; an integration rod; a cold mirror disposed between the light source and the integration rod; and a relay optics system comprising a plurality of lenses followed by a light valve and a condenser system disposed between the light source and the cold mirror, which condenser system is located at a distance from the light source and wherein the condenser system is adapted for converging the light beam of the light source in such a way that the focal point of the converging light beam which is reflected on the cold mirror is located at or in the vicinity of the entrance of the integration rod, wherein the architecture enables the use of light sources with different focal distances and wherein the condenser system comprises two concentrically aligned bi-convex lenses.