Patent ID: 9111721
Filing Date: 2015-08-18
Classification: H01J

Abstract:
1. An ion beam device comprising: an ion beam optical system configured to irradiate a machining target with an on beam; an absorption current detection device configured to detect an absorption current that flows through the machining target due to the ion beam irradiation; a central processing unit configured to control the ion beam optical system; a shape generation processing unit configured to obtain an image of the machining target on the basis of a scanning signal of the ion beam and the absorption current of the machining target; a machining pattern positioning processing unit configured to position a machining pattern over the image of the machining target obtained by the shape generation processing unit; and an ion beam stopping processing unit configured to stop the ion beam irradiation from a result of comparison between the image of the machining target and the machining pattern while the machining target is machined through the ion beam irradiation.