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:
Oct. 13, 1981
Filed:
Dec. 15, 1978
Nobuoto Hattori, Hachioji, JP;
Olympus Optical Company Ltd., Tokyo, JP;
Abstract
An optical scanner includes a multi-faceted rotating mirror which reflects light beam from a laser unit, and a condenser lens which focuses the beam as a scanning spot on a scanning surface. An anamorphic optical system comprising a cylindrical lens is disposed between the mirror and the surface, and focuses the beam on the surface in the scan direction, but focuses the beam on a plane short of the scanning surface in a direction perpendicular to the scan direction. An optical element having a magnification of projection which is equal to or less than unity and having a refracting or focussing force only in a direction perpendicular to the scan direction is disposed between the plane and the scanning surface.