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. 11, 1982
Filed:
Mar. 12, 1981
Kunihiro Fukino, Kawasaki, JP;
Sunao Ishizaka, Tokyo, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
In an intermediate lens barrel mountable between an interchangeable lens having on the mount thereof means for generating a minimum F-number signal and a camera having means for detecting the signal on the mount thereof on which the interchangeable lens is mountable and including a circuit for receiving as inputs the detected signal and an output based on the light passed through the interchangeable lens and effecting an exposure operation, there is provided means capable of being coupled to each of the signal generating means and the detecting means during said mounting. The transmitting means includes correcting means for shifting the signal obtained from the signal generating means by an amount corresponding to the difference of the minimum F-number obtained as the result of the coupling of the interchangeable lens and the intermediate lens barrel from the minimum F-number of the interchangeable lens and transmitting the signal to the detecting means.