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. 22, 1977
Filed:
Jun. 20, 1975
Applicant:
Inventor:
Robert F Allis, Rochester, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 60 ; 354189 ; 355-8 ; 355 51 ; 355 52 ; 355 66 ;
Abstract
An apparatus for viewing an original and for projecting an image thereof onto a moving imaging surface and a reproducing machine employing the apparatus. The apparatus includes a lens arranged along an optical path. The projected image magnification may be changed by translating the lens in a plane of motion between first and second positions. Apparatus are provided for tilting the lens with respect to the plan of motion to a different extent at the first position than at the second position to thereby reduce the occurrence of vignetting in the optical system.