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:
Aug. 24, 1982
Filed:
Feb. 02, 1981
Wilson M Routt, Jr, Lexington, KY (US);
Donald L West, Winchester, KY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A scanner for mechanically distinguishing light from dark areas of an image, having a light source 4, a collecting lens 7 directing light from the source to surface 11 of a total internal reflective block 62 (block 9 in FIG. 1). The top, parallel surface 13 reflects the light through a focusing, hemispherical condenser lens 17. Light reflected from area 21 on document 23 is collected by the center of lens 17, passes through notch 64 (an area of non-surface 15 in block 9 in FIG. 1), and then through an objective lens 27, from which it is focused on phototransistor 29. The scanner functions well without precise positioning of document.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile