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. 20, 2013
Filed:
Jul. 24, 2009
Olivier Bach, Audenge, FR;
Olivier Bach, Audenge, FR;
Abstract
A method and optical device measures the rotation of an object, including a light source emitting a collimated incident light beam, and a reflecting plane optical interface to be fastened to the object and forming a first reflected beam. The device includes a corner reflector fastened to the object, and having reflecting plane faces forming a second reflected beam, and a detection system capable of measuring the displacement Δof the first reflected beam, and the displacement Δof the second reflected beam. A processing system calculates, as a function of Δand of the distance Dbetween the detection system and the reflecting plane optical interface, and of the measurement of Δand of the distance Dbetween the detection system and the corner reflector, a measurement of the rotation α of the object between an initial position and a measurement position.