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. 23, 2019
Filed:
Sep. 06, 2018
Nisshin Steel Co., Ltd., Tokyo, JP;
Keita Fukui, Tokyo, JP;
Syunsuke Shiga, Tokyo, JP;
NISSHIN STEEL CO., LTD., Tokyo, JP;
Abstract
A surface defect inspecting device for steel sheets includes: an illuminating unit configured to illuminate an imaging target portion on a surface of a steel sheet; first and second diffuse reflection light imaging units arranged at a first angle and at a second angle larger than the first angle with respect to a specular reflection direction of illuminated light reflected from the imaging target portion, respectively, imaging simultaneously reflection light of illuminated light reflected from the imaging target portion; and an image signal processor configured to process first and second diffuse reflection image signals acquired by the first and second diffuse reflection light imaging units, respectively, detecting, as a surface defect portion, a portion for which brightness level is lower than a first predetermined threshold in the first diffuse reflection image signal as well as higher than a second predetermined threshold in the second diffuse reflection image signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile