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:
Sep. 09, 2008
Filed:
Nov. 01, 2004
Shinichiro Yakita, Tochigi, JP;
Yasuyuki Tomita, Tochigi, JP;
Shinichiro Yakita, Tochigi, JP;
Yasuyuki Tomita, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is an image-taking lens system, with which the optimum image-forming position can be detected accurately regardless of whether an auxiliary lens system is inserted or not, and with little blurring of the image on the output screen during wobbling. The image-taking lens system includes a light amount adjustment stop; a relay lens unit having an image-forming action; a wobbling lens unit arranged within the relay lens unit, the wobbling lens unit being driven by an amplitude in an optical axis direction; and an auxiliary lens system which can be inserted into and removed from the relay lens unit, the auxiliary lens system shifting a focal length of the overall image-taking lens system. The amplitude by which the wobbling lens unit is driven is set depending on whether the auxiliary lens system is inserted or removed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile