Patent ID: 7928384

Claim:
A charged particle beam device including: an electron optical system to irradiate a sample with a primary charged particle beam and detect and output secondary charged particles as a signal output, and a controller that regulates a voltage applied to the applicable electron optical system and the sample, wherein the controller comprises a computer readable medium containing instructions that, when executed, cause the charged particle beam device to form a first image of a non-charged sample as a reference image in a state where a voltage applied to the sample that is higher than an accelerated energy of the primary charged particle beam, form a second image of a charged sample as an object of inspection in a state where the voltage applied to the sample is higher than the accelerated energy of the primary charged particle beam, and calculate a static charge of a surface of the charged sample based on a differential between the first and the second images, and wherein the controller controls the electron optical system based on the static charge of the surface of the charged sample.