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:
Jul. 18, 1978
Filed:
Aug. 02, 1976
Robert E Gottschalk, Los Angeles, CA (US);
Albert L Mayer, Tarzana, CA (US);
Panavision, Incorporated, Tarzana, CA (US);
Abstract
To facilitate viewing of scenes photographed by a motion picture camera under dim lighting conditions, a viewing system for aiming and focusing the motion picture camera incorporates a ground glass plate and a beam splitter with the light from a scene photographed being, in turn, reflected from a conventional rotating camera shutter, through the ground glass plate and then reflected from one side of a beam splitter and then through an optical system to an eyepiece. A solid state lamp such as red light emitting diodes are disposed on the other side of the beam splitter with the red light being transmitted through the beam splitter onto the ground glass plate which has a set of lines defined by metal strips from which the red light is reflected back onto the beam splitter and to the eyepiece, such set of lines defining the boundary within which the scenes are required to be located.