Color combining illumination device

摘要

An illumination device comprising a first light source generating first light beam having a first spectral distribution and a second light source generating a second light beam having a second spectral distribution. A first dichroic reflector is positioned in the first light beam and transmits a part of the first light beam and reflects a part of the second light beam. The first and second light beam propagates initially primarily in a first direction along an optical axis and reflecting means reflects the second light beam towards the dichroic reflector. The light sources, the dichroic reflector and reflecting means are mutually arranged such that the second light beam propagates primarily in a second direction substantially opposite the first direction and towards the first light source after being reflected by the reflecting means and such that the second light beam propagates substantial in the first direction after being reflected by the dichroic reflector.

主权项

1. An illumination device 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; at least a second light source, said second light source generates a second light beam having a second spectral distribution; said second light beam propagates primarily in said first direction along said optical axis; at least a 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; reflecting means reflecting at least a part of said second light beam towards said first dichroic reflector; wherein said first light source, said reflecting means, said second light source and said first dichroic reflector are mutually arranged such that said second light beam propagates primarily in a second direction substantially opposite said first direction and towards at least a part of said first light source after being reflected by said reflecting means and such that at least a part of said second light beam propagates primarily in said first direction after being reflected by said first dichroic reflector.