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:
Nov. 08, 1988
Filed:
Apr. 30, 1987
Applicant:
Inventors:
Michael E Harrigan, Webster, NY (US);
Edward A Powers, Penfield, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350463 ;
Abstract
A ten-element wide angle lens is optimized for projecting full frame images of a document at an object plane onto a photosensitive image plane. The lens has a semi-field angle greater than 38.degree., a relative aperture of f/10, and a magnification range of 0.65 to 1.55. The lens is characterized by improved relative illumination, improved pupil coma, and partial cos.sup.4 illumination falloff compensation.