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:
Jun. 13, 1989
Filed:
Mar. 17, 1988
Yasuzi Ogata, Tokyo, JP;
Takao Ohi, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A zoom lens system having a short total length and a small outside diameter, comprising a front lens group having positive refractive power and a rear lens group having negative refractive power, and so designed as to change focal length by varying an airspace reserved between said lens groups; said front lens group consisting, in the order from the object side, of a positive meniscus lens, a negative lens and at least one positive lens, and said rear lens group consisting of a positive lens, a biconcave lens and a negative meniscus lens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile