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. 21, 1985
Filed:
May. 17, 1984
Yasumasa Tomori, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An intermediate adapter for coupling an interchangeable lens having a small flange focal distance, such as an interchangeable lens originally intended for use with a single-lens reflex camera, to a camera body having a large flange focal distance. The adapter includes an aperture device replacing a stop of the interchangeable lens and which is driven by an electric motor. An aperture value data transmitting member transmits aperture value data set by an aperture value setting member provided for the interchangeable lens to the aperture device. An aperture opening degree regulator sets an aperture opening degree to a set aperture value according to the aperture value data transmitted in an aperture driving operation performed by the electric motor. A video changeover device releases the aperture opening degree regulator to allow the aperture device to operate in a range of a fully open state to a fully closed state.