The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1981
Filed:
Jul. 14, 1980
Robert E Gottschalk, Los Angeles, CA (US);
Panavision, Incorporated, Tarzana, CA (US);
Abstract
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 elongated opening.