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:
Jul. 05, 1994
Filed:
Sep. 14, 1990
Applicant:
Inventor:
Akira Morimoto, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359216 ; 359205 ; 359212 ;
Abstract
A scanning optical system according to the present invention comprises a laser light source, a scanning deflector for deflecting a laser beam from said laser light source, a scanning lens for focusing deflected light on a scanning surface, a focusing point changing element for changing a focusing point so that a curvature of field is reduced.