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. 20, 1998
Filed:
Sep. 30, 1996
Mark M Meyers, Hamlin, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A zoom lens comprises a plurality of lens elements arranged into three lens units. More specifically, there is a first lens unit of positive refractive power, a second lens unit of negative refractive power, and a third lens unit of positive refractive power. The third lens unit is located between the first and the second lens units. The plurality of lens elements provide: (i) a zoom ratio greater than 1.5, (ii) an F/number in the telephoto position of less than F/5 and an F/number in the wide angle position of less than F/3.6, (iii) and an overall compactness ratio L.sub.v /f.sub.t <1.0, where L.sub.v is the distance from a front vertex of the zoom lens to the image plane in a telephoto position, and f.sub.t is the focal length of the zoom lens in the telephoto position.