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:
Jan. 07, 2020
Filed:
Mar. 13, 2019
Seiko Epson Corporation, Tokyo, JP;
Taisuke Yamauchi, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An arithmetic device includes an imaging section adapted to take an image of the measurement object, a relative phase calculation section adapted to calculate a relative phase, and a projection control section adapted to perform a first pattern projection and a second pattern projection, and the relative phase calculation section adapted to obtain a grayscale image of a measurement object on which light is projected due to the first pattern projection and a grayscale image of the measurement object on which light is projected due to the second pattern projection from the imaging section to calculate the relative phase using the grayscale images obtained.