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, 1992
Filed:
Dec. 19, 1990
Takashi Iizuka, Tokyo, JP;
Asahi Kogaku Kogya K.K., Tokyo, JP;
Abstract
A scanning optical system is disclosed which comprises a light source unit emitting generally parallel rays of light, a deflector which deflects the rays of light issuing from the light source unit, a first focusing optical unit that is provided between the light source unit and the deflector, that has power in a direction perpendicular to the direction in which the rays of light are to be deflected, with the principal point being located outside the first optical unit toward the light source unit, and that focuses the incident rays of light to form a line image at a point close to the deflector, and a second focusing optical unit that permits the deflected rays of light to be focused on the object to be scanned.