Patent ID: 8545029

Claim:
A light production system for a projector comprising: at least one high pressure mercury arc lamp; at least one red laser; at least one green laser; an integrator for receiving and combining light from said at least one high pressure mercury arc lamp, red light from said at least one red laser and green light from said at least one green laser, said integrator comprising an output enabled to emit combined light into illumination relay optics of said projector; a double notch filter proximal to an entrance of said integrator, said double notch filter comprising a first band pass for receiving and transmitting said red light and a second band pass for receiving and transmitting said green light, and substantially reflecting given light outside of each of said first band pass and said second band pass; and, a fold mirror for reflecting said light from said at least one high pressure mercury arc lamp towards said double notch filter, said fold mirror, said double notch filter and said entrance arranged relative to one another such that said red light and said green light passes through said double notch filter and into said entrance, and said light from said at least one high pressure mercury arc lamp outside of said first band pass and said second band pass reflected from said double notch filter and into said entrance.