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:
Sep. 07, 1999
Filed:
Oct. 07, 1997
Paul Douglas Stoner, North Canton, OH (US);
Timothy P O'Hagan, The Woodlands, TX (US);
Telxon Corporation, Akron, OH (US);
Abstract
An optical reader for reading optical indicia includes an imaging element for forming an image of the optical indicia; a photodetector element having an aperture with a width smaller than the width of a smallest element in the image to be discerned by the optical reader; and optical means for causing the image to be swept past the aperture to produce an output of the photodetector indicative of the optical indicia. The optical reader also may include an optical element which varies an image distance between the imaging element and the photodetector with respect to time to correspondingly vary an object distance at which the optical indicia is located from the imaging element in order that the image is focused at the image plane.