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:
Jul. 10, 2018
Filed:
Mar. 02, 2017
Yokogawa Electric Corporation, Tokyo, JP;
Osamu Furukawa, Tokyo, JP;
Yokogawa Electric Corporation, Musashino-shi, Tokyo, JP;
Abstract
A measuring apparatus for contactlessly measuring vibration or displacement of a measurement target includes a light source configured to emit a continuous wave of light frequency-modulated to arrange a measurement site of the measurement target within a correlation peak, a divider configured to divide the continuous wave of light into first and second divided-waves of light, a light receiver configured to receive interfering light of the first divided-wave of light reflected by the measurement target and the second divided-wave of light, and a calculator configured to calculate the vibration or displacement of the measurement target using an electric signal output from the light receiver.