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:
Feb. 22, 2022
Filed:
Aug. 23, 2019
Mitutoyo Corporation, Kanagawa, JP;
Shinji Komatsuzaki, Ibaraki, JP;
Mitutoyo Corporation, Kanagawa, JP;
Abstract
A measurement apparatus including a laser apparatus; a branching part that branches the frequency modulated laser beam into a reference light and a measurement light; a beat signal generation part that generates a beat signal by mixing the reflected light reflected by irradiating the measurement light to an object to be measured; and a detection part that performs frequency analysis on first sampling data generated by sampling the beat signal at a first frequency and second sampling data generated by sampling the beat signal at a second frequency obtained by dividing a resonance frequency of the laser resonator by a positive integer, wherein the first frequency is a frequency equal to the resonance frequency or being a frequency equal to or more than twice the resonance frequency of the laser resonator and a measurement method are provided.