Patent ID: 7182468

Claim:
An illumination system, comprising: a first light source and a second light source; a first light integrating device and a second light integrating device, each light integrating device including an input aperture at an input end for receiving input light and a turning mirror at an output end for reflecting light in the light integrating device onto an output aperture, the output aperture being positioned in a direction perpendicular to the input aperture, the first light integrating device receiving input light from the first light source and the second light integrating device receiving input light from the second light source; and a third light integrating device including an input aperture at an input end, the input aperture being optically coupled to the output apertures of the first and second light integrating devices for receiving light collected by the first and second light integrating devices, the third light integrating device providing light output at an output aperture, wherein the first light integrating device has a first output aperture size, the second light integrating device has a second output aperture size and the third light integrating device has a third input aperture size, the third input aperture size being the total of the first and second output aperture sizes.