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:
Mar. 01, 2016
Filed:
Nov. 26, 2013
Applicant:
Sony Corporation, Tokyo, JP;
Inventor:
Toshihiro Sunaga, Kanagawa, JP;
Assignee:
SONY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/34 (2006.01); H04N 5/225 (2006.01); G02B 15/173 (2006.01); H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
H04N 5/2254 (2013.01); G02B 15/173 (2013.01); H04N 5/23209 (2013.01); H04N 5/23212 (2013.01);
Abstract
An image pickup lens includes: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having negative refractive power, arranged in order from an object side to an image side, the fourth lens group being configured to travel along an optical axis through focusing operation. In the image pickup lens, following conditional expression (1) is satisfied,4<−0.35  (1)where f is a total focal length of the image pickup lens, and f4 is a focal length of the fourth lens group.