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. 12, 1985
Filed:
Nov. 04, 1982
Applicant:
Inventor:
Tooru Fujii, Hino, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350427 ; 350423 ;
Abstract
A zoom lens system with a zoom ratio about 3 comprising a first lens group to be used for focusing, a second lens group which is a variator, a third lens group which is a compensator, and a fourth lens group which is a master lens, the second lens group being provided with a lens surface having the correcting function for chromatic aberration and a lens surface having the correcting function for spherical aberration so that chromatic aberration of spherical aberration is thereby corrected favorably.