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:
Jul. 15, 2025
Filed:
Sep. 23, 2022
Jeol Ltd., Tokyo, JP;
Tomohiro Mihira, Tokyo, JP;
JEOL Ltd., Tokyo, JP;
Abstract
Provided is a charged particle beam apparatus that acquires an image by scanning a specimen with a charged particle beam, and includes a contrast adjustment circuit that adjusts contrast of the image; a brightness adjustment circuit that adjusts brightness of the image; and a control unit that controls the contrast adjustment circuit and the brightness adjustment circuit. The control unit acquires information on luminance of a reference image in a non-signal state, and information on an average value of luminance of each pixel of the reference image, controls the brightness adjustment circuit, based on the acquired information on luminance of the reference image in a non-signal state, acquires the image in a state where the brightness adjustment circuit is controlled, and adjusts the contrast of the acquired image by controlling the contrast adjustment circuit, based on the average value of luminance of each pixel of the reference image.