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:
Apr. 21, 2020
Filed:
Nov. 21, 2019
Mitutoyo Corporation, Kawasaki, Kanagawa, JP;
Akihide Kimura, Saitama, JP;
Mitutoyo Corporation, Kawasaki, JP;
Abstract
An optical sensor in which an optical component more inexpensive than a corner cube is used as a measurement target and which has accuracy similar to that of a case where the corner cube is used is provided. An optical sensorincludes a light source, a dividing unit, a retroreflection unitthat retroreflects first light and second light divided by the dividing unit, a combining unit, a light receiving unit, and a calculation unit. The retroreflection unitincludes a first retroreflectorthat retroreflects the first light in parallel in an opposite direction of an incident direction of the first light by performing reflection thereof twice, a second retroreflectorthat retroreflects the second light in parallel in an opposite direction of an incident direction of the second light by performing reflection thereof twice, and a third retroreflectorthat retroreflects the first light, which is emitted from the first retroreflector, to the first retroreflectorand retroreflects the second light, which is emitted from the second retroreflector, to the second retroreflector