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:
Apr. 15, 1980
Filed:
Jan. 04, 1978
Applicant:
Inventor:
Shuji Ogino, Osaka, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350184 ;
Abstract
A wide angle zoom lens system having a compact configuration is provided for use with 35 mm single lens reflex cameras. The zoom lens system includes two lens groups that can be relatively displaced along the optical axis to provide variation in focal length. The first lens group has a negative refractive power and the second lens group has a positive refractive power. A wide field angle is provided while minimizing the number of optical lens elements that constitute the two group zoom lens system.
Ogino, Shuji. (1980). Wide angle zoom lens system (U.S. Patent No. 4198128). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4198128
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile