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:
Mar. 23, 1993
Filed:
Apr. 03, 1990
Harry P Brueggemann, San Marino, CA (US);
Olive Tree Technology, Inc., San Marino, CA (US);
Abstract
A scanner includes a light source for producing a light beam and a multifaceted polygon for directing the light beam to a spot on a surface to be scanned, such as at the surface of a photoreceptor or a document to be read, that is located at a predetermined location relative to the polygon and for moving the spot across the surface along a scan line or predetermined length. The scanner also includes a post-facet lens system with first and second elements configured to compensate for field curvature and wobble without compensating for scanner non-linearity. They are composed of plastic, the surfaces of the elements having curvature in both the scan plane and the cross-scan plane as well as less magnification than existing post-facet lens systems.