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. 29, 2014
Filed:
Feb. 09, 2012
Hirohiko Kimata, Shibuya-ku, JP;
Yasuharu Yamada, Shibuya-ku, JP;
Yasuji Ogata, Shibuya-ku, JP;
Kazuteru Kawamura, Shibuya-ku, JP;
Hirohiko Kimata, Shibuya-ku, JP;
Yasuharu Yamada, Shibuya-ku, JP;
Yasuji Ogata, Shibuya-ku, JP;
Kazuteru Kawamura, Shibuya-ku, JP;
Olympus Imaging Corp., Tokyo, JP;
Abstract
In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.