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. 08, 2005
Filed:
Apr. 10, 2003
Toshihide Nozawa, Hachioji, JP;
Kyoko Iijima, Hachioji, JP;
Toshihide Nozawa, Hachioji, JP;
Kyoko Iijima, Hachioji, JP;
Olympus Corporation, Tokyo, JP;
Abstract
The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.