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. 20, 2007
Filed:
Nov. 13, 2001
Christopher A. Wiklof, Everett, WA (US);
Cathy Aragon, Snohomish, WA (US);
Josh M. Kornfeld, Seattle, WA (US);
Clarence T. Tegreene, Redmond, WA (US);
James T. Russell, Bellevue, WA (US);
Christopher A. Wiklof, Everett, WA (US);
Cathy Aragon, Snohomish, WA (US);
Josh M. Kornfeld, Seattle, WA (US);
Clarence T. Tegreene, Redmond, WA (US);
James T. Russell, Bellevue, WA (US);
Microvision, Inc., Redmond, WA (US);
Abstract
A scanner such as a bar-code scanner includes a scan-beam generator, a beam reflector having a first magnet, and a beam-sweep mechanism having a second magnet. The beam-sweep mechanism causes the reflector to sweep the scan beam across a target such as a bar-code symbol by exerting a force on the first magnet with the second magnet. In one example, attraction between the magnets holds the reflector steady in a non-sweep position. Conversely, in a sweep position, repulsion between the magnets causes the reflector to oscillate and sweep the scan beam across a target such as a bar-code symbol. Because it does not include a motor for rotating a beam-sweep mirror, the scanner is often smaller and uses less electrical energy than motorized bar-code scanners.