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. 22, 2007
Filed:
Jun. 28, 2006
Nobuaki Toyama, Saitama, JP;
Nobuaki Toyama, Saitama, JP;
Fujinon Corporation, Saitama, JP;
Abstract
A vibration-proof zoom lens comprises a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a positive fifth lens group, which are disposed in this order from a subject side. The second lens group moves toward an image side at a time when magnification changes from a wide-angle end to a telephoto end. The fourth lens group moves to correct variation of an image plane at the time of magnification change. The first, third and fifth lens groups are fixed. The third lens group is composed of first to third subgroups. When vibration occurs, the second subgroup is moved in a plane perpendicular to an optical axis to correct an image position so that an image blur is prevented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile