Patent ID: 7731368

Claim:
In a projector assembly having a lamp for emitting light, and an ellipsoid reflector for capturing said light from a first focal point on the ellipsoid reflector and focusing said light at a second focal point co-incident with a further optics component, said ellipsoid reflector having a opening through its vertex facilitating placement of said lamp, the improvement comprising, said opening in said ellipsoid reflector being sized to allow a major portion of cooling air to pass therethrough into a region defined by said ellipsoid reflector, said major portion being greater than 50%; and an air deflector located in said opening; wherein said air deflector distributes cooling air along both the lamp and outwardly towards the inside surface of said ellipsoid reflector from within said region, wherein said projector assembly further comprises a main cooling duct for directing cooling air towards said opening and wherein said main cooling duct has a truncated conical shroud surrounding at least a portion of said ellipsoid reflector for directing a minor portion of cooling air outside of said ellipsoid reflector.