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. 08, 2024
Filed:
Dec. 13, 2018
Shimadzu Corporation, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A vibration measurement deviceincludes an excitation unit (signal generatorand vibrator) for exciting an elastic wave to an inspection target S, an illumination unit (wavelength stabilized laser beam sourceand illumination light lens) for performing stroboscopic illumination to a measurement region of a surface of the inspection target S using a wavelength stabilized laser beam source, a displacement measurement unit (speckle-sharing interferometer) for collectively measuring a displacement of each point of the measurement region in the back-and-forth direction by speckle interferometry or speckle-sharing interferometer. By using the wavelength stabilized laser beam source, an interference image can be obtained even when the inspection target S has large surface irregularities.