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:
Feb. 04, 1992
Filed:
Aug. 28, 1990
Applicant:
Inventor:
Sumihiro Nishihata, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359206 ; 359205 ; 359215 ; 359662 ;
Abstract
An f.theta. lens comprises a first lens set having a positive or negative refracting power and a second lens set having a positive refracting power, which are located in that order from the side of a light deflector. The first lens set is composed of two lenses cemented together, and the second lens set is composed of a single lens. They satisfy the conditions