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. 26, 2002
Filed:
Apr. 11, 2000
Massimo Facchini, Malgesso, IT;
Alfredo Carlo Lucia, Osmate, IT;
European Community, Luxembourg, US;
Abstract
To improve the contrast of images obtained using the pulsed image-addition ESPI technique relative to a mechanically stressed object, a preliminary measuring cycle is performed, with the object in the unstressed condition, to obtain a predetermined number of interference images ( ) differing from one another by a controlled phase shift of a fraction of the pulses traveling along one of the branches of the interferometer; a mean luminous intensity value is calculated ( ) from the interference images, is memorized ( ), and is subtracted ( ) from each of the interference images obtained during the actual measuring cycle to improve the contrast of the images.