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. 18, 2008
Filed:
Jun. 24, 2005
Viviane Cattin, Saint Egreve, FR;
Philippe Peltie, Saint Paul de Varces, FR;
Bruno Flament, Saint Julien de Ratz, FR;
William Fourcault, Grenoble, FR;
Viviane Cattin, Saint Egreve, FR;
Philippe Peltie, Saint Paul de Varces, FR;
Bruno Flament, Saint Julien de Ratz, FR;
William Fourcault, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
An optical device for measuring the displacement velocity of a first movable element in relation to a second element which is fixed to one of said elements and comprises two lasers transmitting two incident beams towards the other elements. The device including photosensitive linear arrays for front and rear detection which are substantially perpendicular to each other. Additional front and rear photosensitive linear arrays are disposed at a distance from the photosensitive front and rear linear arrays. A processing circuit is connected to the photosensitive linear arrays and determines the longitudinal and/or transversal displacement velocity of the movable element. The circuit also determines the distance between the device and the other element by means of optical triangulation and corrects the longitudinal and/or transversal displacement velocity value according of the said distance.