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. 04, 2022
Filed:
Apr. 30, 2020
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventor:
Hideki Wada, Tokyo, JP;
Assignee:
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/88 (2006.01);
U.S. Cl.
CPC ...
G01N 21/8803 (2013.01); G01N 2021/8887 (2013.01);
Abstract
The visual inspection device comprises a first illumination device capable of illuminating an top surface of an inspection object, a second illumination device capable of illuminating a bottom surface opposite to the top surface of the inspection object and a first imaging device capable of capturing the top surface of the inspection object. A relative position of each of the first illumination device and the second illumination device and the inspection object are adjusted such that a part of the captured image captured by the first imaging device is disappeared.