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:
Jun. 24, 1980
Filed:
Nov. 17, 1978
Kiyoshi Kitai, Yotsukaido, JP;
Yukio Morino, Yotsukaido, JP;
Shogo Kato, Yotsukaido, JP;
Ichiro Nemoto, Yotsukaido, JP;
Seiko Koki Kabushiki Kaisha, Tokyo, JP;
Abstract
An automatic focusing camera capable of automatically focusing the photographic lens thereof by a system actuated by a signal produced by a focus detection circuit when the distance between the object to be photographed by the camera is detected includes an exposure control device comprising an exposure control circuit and an electromagnet. A photographic lens focusing member is movable in response to the shutter release operation and is stopped in response to the magnetizing of the electromagnet. An exposure device is actuated to open to start the exposure after the photographic lens focusing member is stopped, and is closed in response to the demagnetizing of the electromagnet which occurs upon the receipt thereof of the exposure completion signal generated by the exposure control circuit. In this way, a common electromagnet is used for both the focus control and the exposure control to simplify the construction of the camera and to reduce the cost thereof.