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. 15, 2017
Filed:
Nov. 15, 2013
Centre National DE LA Recherche Scientifique—cnrs, Paris, FR;
Michael Atlan, Paris, FR;
Benjamin Samson, Paris, FR;
Abstract
The invention relates to a digital holography method for detecting the vibration amplitude of an object () having a vibration frequency ω, comprising: generating object illumination waves (W) and reference waves (W); acquiring interferograms between the reference wave (W) and a signal wave (W) by means of a bandwidth ω s detector (), the reference wave comprising two components E, Eof frequencies ω, ωthat are respectively staggered in relation to the laser frequency ωby a quantity δ=γωand δ2=qω+γ2ω, where q is an integer and −0.5≦γ1, γ≦0.5; and calculating the vibration amplitude of the object from the optical beats spectrum deduced from the complex amplitude of an interferogram.