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:
Oct. 09, 2012
Filed:
Jun. 08, 2010
Applicant:
Atsushi Ohata, Tokyo, JP;
Inventor:
Atsushi Ohata, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A zoom lens includes, in order from an object side to an image side: first, second and third lens groups having a negative refractive power, a positive refractive power and a positive refractive power, respectively. The first lens group includes a single compound aspheric lens formed of a spherical glass lens having a negative refractive power and a resin lens having a positive refractive power and an image side surface thereof is aspheric, and the conditional expressions (1) to (4) are satisfied11/<−1.8,  (1)1.55<11,  (2)55<ν11, and  (3)11<−16.5,  (4)