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. 04, 1986
Filed:
Jun. 12, 1984
Applicant:
Inventor:
Shinichi Mizuno, Tokyo, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
350454 ;
Abstract
A telephoto lens system comprising a front lens group, and a rear lens group comprising a first subgroup and a second subgroup, said front lens group comprising a first positive lens component, a second positive lens component and a negative lens component, said first subgroup comprising a negative cemented lens component, and said second subgroup comprising a positive cemented lens component. Said lens system has a large aperture and favorably corrected aberrations, especially the secondary spectrum.
Mizuno, Shinichi. (1986). Telephoto lens system (U.S. Patent No. 4573770). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4573770
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile