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:
Sep. 22, 1998
Filed:
Jun. 13, 1994
Ali Manesh, Fayetteville, AR (US);
Other;
Abstract
The present invention is disclosed comprising a light source, photo detector and a lens system as its main parts. The effect of light intensity on changing current through the photo detector due to the linear or angular displacement of the detector with respect to the light source is the focusing point of this idea. The basic unit of this invention consists of a light source and a detector aiming at each other with a set of lens in between and all are pre-assembled on a film of polymer. The assembly then can be glued on the surface of any test specimen to measure any possible strain. As an alternative, two heads of fiber optic cables can be preassembled on the mounting polymer pointing toward each other. In this method, optical fibers are used to carry the light and the light source and detectors can be isolated from any ambient electro magnetic noise and away from the testing equipment. Lenses are utilized to either converge or to columnate the light rays.