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:
Feb. 01, 1983
Filed:
Sep. 17, 1980
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This application discloses a motion picture camera having an automatic focus (auto-focus) adjusting device for automatically focusing a shooting lens on an object. The motion picture camera includes a first manipulating means for selecting one mode of the following three modes, a first mode in which said auto-focus adjusting device is rendered inoperative so that the shooting lens can be manually focused; a second mode in which, in response to the camera release, the shooting lens can be auto-focus adjusted by said auto-focus adjusting device only once and thereafter held at a locked position irrespective of variations in distance between the shooting lens and object; and a third mode in which, throughout a period of the camera release, the shooting lens can be continuously auto-focus adjusted by said auto-focus adjusting device, following the variations in distance between the shooting lens and object, and a second manipulating means effective only in said second and third modes for permitting the shooting lens to be auto-focus adjusted by said auto-focus adjusting device again only once during the camera release in the second mode and for holding the shooting lens at its locked position irrespective of the camera release in the third mode.