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. 29, 2026
Filed:
Dec. 21, 2023
Hitachi High-tech Corporation, Tokyo, JP;
Hitachi High-Tech Corporation, Tokyo, JP;
Abstract
Provided are a charged particle gun and a charged particle beam apparatus that can reduce instability in the amount of emitted charged particles and deviation in the charged particle trajectory when the amount of charged particle beams is increased. A charged particle gun includes a charged particle source that generates a charged particle, an electrode portion that includes an extraction electrode for extracting a charged particle beam from the charged particle source, a voltage introduction unit that introduces voltage to the electrode portion, and a temperature adjustment unit that adjusts a temperature of the electrode portion. The temperature adjustment unit is configured to adjust the temperature of the electrode portion based on a change in a state of the electrode portion.