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:
Oct. 22, 2024
Filed:
Jan. 18, 2021
Delmic Ip B.v., Delft, NL;
Andries Pieter Johan Effting, Delft, NL;
DELMIC IP B.V., Delft, NL;
Abstract
A method and apparatus for inspecting a sample is provided. The apparatus includes a sample holder for holding the sample at a sample plane, a charged particle column for generating an array of multiple charged particle beamlets and directing the array towards the sample holder, a position sensor, and a control unit. The charged particle column includes an objective lens for focusing the charged particle beamlets of the array in an array of charged particle beam spots at or near the sample plane. The objective lens includes a magnetic lens common for all charged particle beamlets. The position sensor provides a signal which is dependent on the position of the sample. The control unit controls the position of the sample holder on the basis of the signal from the position sensor, to keep the pitch and/or orientation of the spots on the sample constant.