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:
Apr. 25, 2006
Filed:
Jun. 05, 2002
Pierre Tschirren, Marin, CH;
Gilles Mathieu, Montpellier, FR;
Christophe Dufresne, Guyans-Vennes, FR;
Giovanni Longa, Le Landeron, CH;
Pierre Tschirren, Marin, CH;
Gilles Mathieu, Montpellier, FR;
Christophe Dufresne, Guyans-Vennes, FR;
Giovanni Longa, Le Landeron, CH;
EM Microelectric - Marin SA, Marin, CH;
Abstract
A movement detection device, intended particularly for a computer mouse or a hand-held scanner, includes a light source () associated with a prism () having a non-uniformly plane reflective face. One thus obtains an as uniform as possible illumination of the field () of the object whose movements will be detected. An optical system () inserted between the field and the optoelectronic sensor () fixed to a printed circuit board () is mounted on a support () fixed to the board.