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:
Aug. 15, 1989
Filed:
Apr. 15, 1986
Olympus Optical Co., Ltd., , JP;
Abstract
An output device for range information for use in an interchangeable lens includes a range ring of the interchangeable lens which is first preset at an extreme position, namely, a position at infinity or at close range, and a CPU disposed in the interchangeable lens for producing absolute range information relative to the extreme position on the basis of pulses which are generated in response to data stored in the CPU and rotating of the range ring. A camera system includes rotatable and manually operable operating members which are located on a camera accessory. Rotation of the operating members results in the generation of pulses and the rotation detection device uses the pulses for detecting rotation of the operating members. An output from the detecting means serves to control a motor drive to focus an interchangeable lens.