Patent ID: 7437034

Claim:
A device for coupling the light of multiple light sources, comprising a reflectance surface associated with one or more of said light sources and at least one integration rod having an incident surface, so that each light source is enabled to emit a light bundle either on the corresponding reflectance surface that focuses the light on said incident surface or directly on said incident surface; wherein the reflectance surfaces are positioned in the light bundles emitted by the light sources between said light sources and said at least one integration rod; and wherein the spot of each light source at its focal point has a surface that is smaller than the surface of the incident surface of the at least one integration rod; and further wherein the light bundles of the different light sources enter the at least one integration rod at different and optionally overlapping, parts of its incident surface; wherein an additional integration rod is provided that is positioned with one end against the incident surface of the at least one integration rod, and wherein the cross section of the additional integration rod is smaller than the cross section of the incident surface; wherein a reflectance surface is provided that focuses the light of one or more first light sources on the uncovered part of the incident surface of the at least one integration rod, and wherein a second reflectance surface is provided that focuses the light of one or more second light sources on an incident surface of the additional integration rod; wherein the reflectance surface is formed by two adjacent sides of a triangular body, a connection line between said sides is positioned against or in the proximity of the center of the uncovered part of the incident surface of the at least one integration rod such that the uncovered part is divided into two subparts positioned next to one another; and wherein the second reflectance surface is formed by two adjacent sides of a triangular body, a connection line between said sides being positioned against to or in the proximity of the center of the incident surface of the additional integration rod such that the incident surface is divided into two subparts.