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:
Dec. 26, 2017
Filed:
Mar. 16, 2012
Christian Rembe, Waldbronn, DE;
Alexander Drabenstedt, Ettlingen, DE;
Matthias Schussler, Waldbronn, DE;
Christian Ehrmann, Karlsruhe, DE;
Volkmar Roth, Karlsruhe, DE;
Christian Rembe, Waldbronn, DE;
Alexander Drabenstedt, Ettlingen, DE;
Matthias Schussler, Waldbronn, DE;
Christian Ehrmann, Karlsruhe, DE;
Volkmar Roth, Karlsruhe, DE;
POLYTEC GMBH, Waldbronn, DE;
Abstract
A device for the optical non-contact vibration measurement of an vibrating object, including a laser Doppler vibrometer that has a laser as the light source for a laser beam, a first beam splitter assembly for splitting the laser beam into a measuring beam and a reference beam, a means for shifting the frequency of the reference beam or of the measuring beam in a defined manner, a second beam splitter assembly by which the measuring beam back-scattered by the oscillating object is merged with the reference beam and superimposed on the same, and a detector for receiving the superimposed measuring and reference beam and for generating a measurement signal. The laser is provided with a polarization filter arranged inside the optical resonator of the laser and the laser is frequency stabilized by regulating to a beat signal of the laser.