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:
Sep. 12, 2023
Filed:
Jan. 28, 2021
Seiko Epson Corporation, Tokyo, JP;
Taisuke Yamauchi, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An estimation method includes projecting a pattern image onto an object via a zoom lens, generating imaging data by capturing the pattern image on the object, estimating, based on the imaging data, a position of a principal point of the zoom lens during the projection of the pattern image, and estimating, based on a first characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a first position and a second characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a second position, a characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in the estimated position.