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:
Jun. 17, 2008
Filed:
Nov. 27, 2006
Shinji Yamaguchi, Osaka, JP;
Tetsuo Kohno, Suita, JP;
Genta Yagyu, Nishinomiya, JP;
Konica Minolta Opto, Inc., Hachioji-Shi, JP;
Abstract
A variable magnification optical system for forming an optical image of an object onto a light acceptance surface of an image sensor, has in order from an object side: a first lens group having negative optical power; a second lens group having positive optical power; and a third lens group having positive optical power, the third lens group including at least two lenses. In magnification change from a wide-angle limit to a telephoto limit, the first lens group moves along a locus convex to an image side, the second lens group moves monotonically to the object side, and the third lens group moves along a locus convex to the object side.