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:
Dec. 07, 2004
Filed:
Feb. 14, 2003
Shinichi Mihara, Tama, JP;
Kouki Hozumi, Hino, JP;
Olympus Corporation, Tokyo, JP;
Abstract
The present invention relates to a digital still camera that is compatible with an increasing number of pixels and uses a zoom lens having a high zoom ratio yet compact, simple construction, wherein chromatic aberration of the zoom lens are reduced and the zoom lens is kept against the influences of chromatic aberrations. The zoom lens comprises a lens group G having negative refracting power and at least one lens group G located on the image side of G and having positive refracting power. Upon zooming, the spacing between the negative lens group G and the positive lens group G changes. The positive lens group G includes two doublet components, in each of which a positive lens element and a negative lens element are cemented together in order from the object side of G . The doublet component located on the image side of G has a meniscus form concave on its image side.