Film support element assembly

Details Film support element assembly Film support element assembly

G - Physics

03

B

95/69, 88/80

G03B 1/00 (2006.01) G03B 1/42 (2006.01)

Patent

CA 1180923

Title: FILM SUPPORT ELEMENT ASSEMBLY Inventor: WILLIAM CHESTER SHAW Abstract of the Disclosure A film support element assembly is disclosed, primarily for supporting film in relation to a projection aperture in a motion picture projector having a rolling loop film transport mechanism. In a preferred embodiment the film support element is a so-called "field flattener" and has a cylindrically curved surface over which succes- sive frames in the film are laid by the mechanism. Cleaning means are provided adjacent the film path and the lens element can be displaced to bring a fresh portion of the surface into the film path. At the same time, the cleaning means remove debris from the surface. In one embodiment the lens element is vibrated to discourage adhesion of debris.

408798

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