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.

Date of Patent:
Sep. 22, 2020

Filed:

Nov. 19, 2018
Applicant:

Ckd Corporation, Aichi, JP;

Inventors:

Hiroyuki Ishigaki, Aichi, JP;

Takahiro Mamiya, Aichi, JP;

Assignee:

CKD CORPORATION, Aichi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/24 (2006.01); G01N 21/88 (2006.01); G01B 11/02 (2006.01); G01B 9/02 (2006.01); G01N 21/956 (2006.01); G01B 11/22 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G01B 11/24 (2013.01); G01B 9/02 (2013.01); G01B 11/02 (2013.01); G01B 11/22 (2013.01); G01N 21/88 (2013.01); G01N 21/956 (2013.01); G02B 27/283 (2013.01);
Abstract

A three-dimensional measurement device includes: an optical system that splits incident light into two lights, radiates one of the two lights as measurement light to a measurement object and the other as reference light to a reference surface, and recombines the two lights to emit combined light; a first irradiation unit that emits first light entering the optical system; a second irradiation unit that emits second light entering the optical system; a first imaging unit into which output light that is obtained from the first light and is emitted from the optical system enters; a second imaging unit into which output light that is obtained from the second light and is emitted from the optical system enters; and an image processor that executes three-dimensional measurement of the measurement object, based on interference fringe images taken by the first imaging unit and the second imaging unit.


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