Patent ID: 7212344

Claim:
An apparatus comprising: a first light emitting diode, a second light emitting diode and a third light emitting diode; a first reflecting surface positioned to reflect light emitted from the first light emitting diode; a second reflecting surface positioned to reflect light emitted from the second light emitting diode; a first filter disposed between the first reflecting surface and the second reflecting surface and configured to reflect the light reflected from the first reflecting surface and to transmit light reflected from the second reflecting surface and the light emitted by the third light emitting diode; a second filter disposed between the first reflecting surface and the second reflecting surface and configured to reflect the light reflected from the second reflecting surface and to transmit light reflected from the first reflecting surface and the light emitted by the third light emitting diode, wherein the first filter and second filter are dichroic filters positioned orthogonally relative to one another, the first filter and second filter combine the light reflected from the first reflecting surface, the light reflected from the second reflecting surface and the light emitted from the third light emitting diode; and an optical integrator positioned to receive the combined light from the first filter and the second filter.