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. 19, 2014
Filed:
Jun. 26, 2012
Toshihiro Sunaga, Kanagawa, JP;
Motoyuki Otake, Saitama, JP;
Masaharu Hosoi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Provided is an imaging lens including a fixed first lens group having a positive refractive power and including a plurality of lenses, a second lens group serving as a focus group and including a negative lens, and a third lens group having a positive refractive power that are arranged sequentially from an object side to an image side. A stop is disposed between predetermined lenses of the first lens group, and, on an assumption that a lens group located closer to the object side than the stop of the first lens group is a 1alens group and a lens group located closer to the image side than the stop is a 1blens group, Condition Equation (1) below is satisfied:0.7<1<2.0,  (1)where f is a focal distance of an entire system and f1b is a focal distance of the 1blens group.