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. 22, 2013
Filed:
Jan. 24, 2012
Masaru Morooka, Akishima, JP;
Kazuteru Kawamura, Hachioji, JP;
Koki Hozumi, Hachioji, JP;
Hideyuki Nagaoka, Hino, JP;
Koji Nakagawa, Yokohama, JP;
Masaru Morooka, Akishima, JP;
Kazuteru Kawamura, Hachioji, JP;
Koki Hozumi, Hachioji, JP;
Hideyuki Nagaoka, Hino, JP;
Koji Nakagawa, Yokohama, JP;
Olympus Imaging Corp., Tokyo, JP;
Abstract
A zoom lens includes a first lens group of positive refractive power; a second lens group of negative power; a third lens group of positive power; a fourth lens group of negative power, and a fifth lens group of positive power arranged from the object side to the image side. At activation of variable power from the wide angle end to the telescopic end, the first, third, fourth and fifth lens groups moves so as to get closer to the object side or the image side at the telescopic end than at the wide angle end; and a gap between the first lens group and the second lens group increases; a gap between the second lens group and the third lens group decreases; a gap between the third lens group and the forth lens group increases; and a gap between the forth lens group and the fifth lens group increases.