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:
Jun. 30, 2026
Filed:
Mar. 27, 2023
Nippon Steel Corporation, Chiyoda-ku, JP;
Shinichi Oshima, Chiyoda-ku, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
This thread shape dimension measuring device includes an illumination unit, an imaging unit, a focal distance adjustment unit, a calibration value setting unit, and a control unit. The illumination unit selectively emits parallel light in two directions. The imaging unit selectively performs capturing of a first captured image and a second captured image. The focal distance adjustment unit adjusts a focusing position of the imaging unit by receiving an adjustment instruction from the control unit. The calibration value setting unit has a difference value between a focal distance of the second captured image from a focusing position to the imaging unit before the focusing position adjustment and a focal distance of the first captured image from a focusing position to the imaging unit. The control unit calculates the thread shape dimension on the basis of the captured first captured image and the second captured image.