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:
Jan. 26, 1993
Filed:
Sep. 20, 1991
Applicant:
Inventor:
Motonobu Kawabata, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359218 ; 359205 ;
Abstract
A first image-forming system includes first and second lens systems which are disposed from a light source to a deflector respectively. The first lens system has a positive power along a second direction so as to converge a diverging light beam from the light source onto the deflector with respect to the second direction. With respect to a first direction being perpendicular to the second direction, the first lens system has zero or a negative power while the second lens system has a positive power so that the focal point of the first image-forming system is located at the light source. Thus, a collimated light beam in the first direction from the first image-forming system is directed to the deflector.