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:
May. 26, 1981
Filed:
Sep. 07, 1979
Nippon Kogaku K.K., Tokyo, JP;
Abstract
This invention relates particularly to a phototaking lens having at least a shutter speed priority automatic exposure system. The lens has a mount engageable with a mount of a camera body, which has a signal member operable when the lens is mounted and control means for making a caution and/or for stopping camera operation in response to an output of the signal member. The lens is further equipped with means for presenting the operation of the signal member, this means being disposed on the lens mount facing the signal member as the mount of the lens is engaged with the mount of the camera body. The signal member includes a retractable signal pin projected from the mount of the camera body and the preventing means includes a recess on the mount of the lens which is acceptable to the signal pin.