G - Physics – 03 – B
Patent
G - Physics
03
B
95/43
G03B 19/18 (2006.01) G03C 5/12 (2006.01)
Patent
CA 1147190
ABSTRACT OF THE DISCLOSURE An insert body is interposed between a film magazine and a motion picture camera, and is provided with a cavity containing a light source. An elongated opening in the body transmits light to preflash motion picture film passing from the film magazine into the motion picture camera. Controls on the quantity and quality of light are provided. In one form of control, a translucent cylindrical rod extends into the light source cavity and has an end face exposed to the light source. The translucent rod has an opaque lateral surface interrupted on one side by an axially extending light transmitting window. In another form of control, a window in the side of the translucent rod receives light from the light source. In a third form of control, a cylindrical shell with opposed parallel windows takes the place of the translucent rod. In all cases, the translucent rod or shell has a head portion accessible exteriorly of the body for turning it to change the amount of light passing through the elong- ated opening.
375499
Panavision Incorporated
Smart & Biggar
LandOfFree
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