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:
Apr. 02, 2019
Filed:
Dec. 13, 2017
Applicant:
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Inventors:
Akinori Nishio, Hachioji, JP;
Koji Nakagawa, Yokohama, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/177 (2006.01); G02B 13/18 (2006.01); G02B 15/20 (2006.01); G02B 13/00 (2006.01); H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
G02B 15/177 (2013.01); G02B 13/009 (2013.01); G02B 13/0045 (2013.01); G02B 13/18 (2013.01); G02B 15/20 (2013.01); H04N 5/23296 (2013.01);
Abstract
A zoom lens includes, in order from the object side, a first lens unit having negative refractive power, a second lens unit having positive refractive power, a third lens unit having negative refractive power, and a fourth lens unit having positive refractive power. At a time of zooming from a wide-angle end to a telephoto end, the distance between the first lens unit and the second lens unit is reduced, the distance between the third lens unit and the fourth lens unit is increased, and the fourth lens unit is fixed.