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:
Oct. 15, 2002
Filed:
Sep. 27, 2000
Constantin Coutsomitros, Ranco, IT;
Efthymios Koltsakis, Thessaloniki, GR;
European Community (EC), Luxembourg, US;
Abstract
A differential transducer for measuring the curvature variations of a surface such as the surface of a diaphragm ( ). The transducer includes an assembly of two L-shaped optical elements ( ) having first legs ( ) intended to be mounted on the surface in such a way that the outer faces of both second legs ( ) extend substantially in parallel to each other and at a right angle away from the surface, an optical cavity ( ) defined therebetween, a laser source ( ) having a beam ( ) directed parallel to the surface onto the assembly and perpendicularly to the outer faces of the second legs ( ), and a photodetector ( ) for receiving the beam after having passed through the cavity ( ). The optical elements ( ) are provided with three support tips ( ) firmly applied against the surface and arranged at the corners of an equilateral triangle whose symmetry axis is parallel to the beam ( ) axis, one of the support tips ( ) on the symmetry axis being located close to one of the second legs ( ).