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. 05, 1992
Filed:
Aug. 28, 1990
Kouichi Kobayashi, Tokyo, JP;
COPAL Company Limited, Tokyo, JP;
Abstract
A main driving member coupled with a stepping motor is advanced or returned by normal and reverse rotation of the stepping motor. When the main driving member is advanced, a lens driving member follows the main driving member to be advanced to a focused position and is engaged at the focused position. A shutter mechanism is opened and closed in the course of the returning of the main driving member and subsequently the engagement of the lens driving member is released in the course of the returning of the main driving member so that the lens driving member is returned to its initial position. Any one of a sensor for detecting the initial position of the main driving member or a sensor for detecting the initial position of the lens driving member is provided. By employing one of the two sensors, a single sensor is used to confirm the operation of both of the lens driving member and the main driving member.