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:
Sep. 15, 1998
Filed:
Feb. 26, 1996
Applicant:
Inventor:
Satoru Ono, Toyokawa, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359205 ; 359206 ; 359207 ; 359662 ;
Abstract
A scanning optical system is provided with a scanning lens which images a luminous flux deflected by a deflector at a constant angular speed on a surface to be scanned so that the luminous flux scans the surface to be scanned substantially at a constant speed. At the cross section in the main scanning direction, the luminous flux incident on the scanning lens is a convergent light beam, and the scanning lens includes from the deflector side a first lens of a positive paraxial refractive power and a second lens of a negative paraxial refractive power.