Ashis R Ghosh

US Patent:

20080123058, May 29, 2008

Filed:

Sep 15, 2006

Appl. No.:

11/532282

Inventors:

Ashis Ranjan Ghosh - Cerritos CA, US

Assignee:

CHRISTIE DIGITAL SYSTEMS INC. - Kitchener ON

International Classification:

G03B 21/16

US Classification:

353 60

Abstract:

In a projector assembly having a lamp for emitting light, and an ellipsoid reflector for capturing the light, the ellipsoid reflector having an opening through its vertex facilitating placement of the lamp, there is provided an improvement wherein the opening in the ellipsoid reflector is sized to allow a major portion of cooling air to pass therethrough into a region defined by the ellipsoid reflector. An air deflector is situated in the opening so as to facilitate distribution of cooling air along the lamp and outwardly towards the inside surface of said ellipsoid reflector from within said region.