Illumination – Light modifier – Reflector
Reexamination Certificate
2006-03-28
2006-03-28
Cariaso, Alan (Department: 2875)
Illumination
Light modifier
Reflector
C362S294000, C362S298000
Reexamination Certificate
active
07018076
ABSTRACT:
A high performance compound reflector and cooling system for use with a projection system having a lamp for emitting light, an ellipsoid reflector for capturing said light from a first focal point of the ellipsoid reflector and focusing said light at a second focal point co-incident with an integrator rod, and a spherical reflector for retro-reflecting light through the first focal point for reflection by said ellipsoid reflector to said second focal point. The shape of the ellipsoid reflector according to the present invention allows the spherical element to have a larger diameter at the interface between the ellipsoid and sphere. This provides a location for an air deflector in a shape similar to the back of the ellipsoid for channeling air over and outside of the ellipsoid and then along the inside of the sphere. The design of the reflector and air deflector allow cooling requirements to be substantially reduced.
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Demura et al, Apr. 23, 1992, Copyright 2005 Derwent Information LTD, (SU 1728573A) Abstract publication “Composite reflector lamp-”, basic abstract and one figure.
Komarnycky O. Nicholas
Matthews Richard
Pinho George P.
Cariaso Alan
Christie Digital Systems Inc.
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