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. 02, 1996
Filed:
Apr. 07, 1994
Etsuko Shibata, Toyohashi, JP;
Hiromu Nakamura, Toyokawa, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A light beam scanning optical apparatus which deflects a light beam emitted from a light source with a polygonal mirror and scans the light beam on a photosensitive member through an f.theta. optical system. Suppose the distance between a rotation axis of the polygonal mirror and each reflecting facet in a case wherein the reflecting facets are flat to be A. If a convergent light beam is incident to the polygonal mirror, and if the reflecting facets are concave, the distance between the rotation axis and the facets is adjusted to be larger than A. If the reflecting facets are convex, the distance is adjusted to be smaller than A. Also, if a divergent light beam is incident, and if the reflecting facets are concave, the distance between is adjusted to be smaller than A. If the reflecting facets are convex, the distance is adjusted to be larger than A.