Patent ID: 8746891

Claim:
An illumination device comprising: a first light source array comprising at least a first light source; said first light source generates a first light beam having a first spectral distribution; said first light beam propagates primarily in a first direction along an optical axis, where the angle between said first light beam and said optical axis is smaller than 33 degrees; a second light source array comprising at least a second light source, said second light source generates a second light beam having a second spectral distribution; at least one first dichroic reflector positioned at least partially in said first light beam and said second light beam; said first dichroic reflector transmits at least a part of said first light beam and reflects at least a part of said second light beam; wherein that said second light beam propagates primarily in a second direction along said optical axis substantially opposite said first direction and towards at least a part of said first light source array, and where the angle between said second light beam and said optical axis is smaller than 33 degrees; that at least a part of said second light beam propagates primarily in said first direction after being reflected by said at least one first dichroic reflector.