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:
May. 01, 2007
Filed:
Apr. 03, 2002
Masahito Watanabe, Hachioji, JP;
Toru Miyajima, Hachioji, JP;
Shinichi Mihara, Tama, JP;
Yuji Miyauchi, Machida, JP;
Toshihide Nozawa, Hachioji, JP;
Hisashi Goto, Tokyo, JP;
Masahito Watanabe, Hachioji, JP;
Toru Miyajima, Hachioji, JP;
Shinichi Mihara, Tama, JP;
Yuji Miyauchi, Machida, JP;
Toshihide Nozawa, Hachioji, JP;
Hisashi Goto, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup system a zoom lens and an electronic image pickup device located on the image plane side of the zoom lens. The zoom lens comprises, in order from the object side, a first lens group Gcomprising two lens components and having generally negative power and a second lens group Gcomprising two lens components and having generally positive power. The focal length of the zoom lens can be varied by varying the air separation between the first lens group Gand the second lens group G. The zoom lens should satisfy at least one of conditions (a) to (n).