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:
Sep. 18, 2012
Filed:
Nov. 10, 2009
Eiji Shirota, Hino, JP;
Eiji Shirota, Hino, JP;
Olympus Imaging Corp., Tokyo, JP;
Abstract
A zoom lens includes, in order from the object side thereof, a first lens unit having a positive refracting power, a second lens unit having a negative refracting power, a third lens unit having a positive refracting power, a fourth lens unit having a positive refracting power, and a fifth lens unit having a negative refracting power. During zooming from the wide angle end to the telephoto end, the first lens unit and the third lens unit are kept stationary with respect to the image plane, and at least the second lens unit and the fourth lens unit move. The first lens unit includes, in order from the object side, a first sub unit having a negative refracting power, a reflecting optical element that bends an optical path by reflection, and a second sub unit having a positive refracting power. The second sub unit includes a cemented lens.