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:
Jan. 03, 1978
Filed:
Apr. 20, 1976
Masamichi Toyama, Macida, JA;
Tomoshi Takigawa, Macida, JA;
Noritsugu Hirata, Yokohama, JA;
Kazuo Ishikawa, Yokohama, JA;
Canon Kabushiki Kaisha, Tokyo, JA;
Abstract
The present invention relates to a motion picture camera which includes a color conversion filter for adapting the tungsten type film to the daylight photography, a manual operation means capable of taking the filter out of the photographic optical path and compensating the sensitivity of the exposure meter device in accordance with the removal of the filter so as to adapt the tungsten type film to the tungsten light photography and a detecting means for removing the filter from the photographic optical path by detecting that the film is of the daylight type so that the tungsten type film as well as the daylight film can be used. The camera is characterized in that it is provided with a holding means which is functionally engaged with the above mentioned detecting means so as to hold the sensitivity of the above mentioned exposure meter device in the state to be used for the daylight photography with the tungsten type film when the detecting means detects that the loaded film is of the daylight type, whereby the operation of the above mentioned manual operation means is nullified when the daylight film is used.