Patent ID: 7326943

Claim:
An electron beam irradiating apparatus comprising: an electron source which generates an electron beam; a first shaping aperture which shapes a cross section of the electron beam emitted from the electron source; a second shaping aperture which shapes a cross section of the electron beam passed through the first shaping aperture; a projection lens which forms an image of the first shaping aperture on the second shaping aperture; a deflector placed between the first and second shaping apertures; an object lens which forms an image of the second shaping aperture on a surface of a sample placed on a downstream side of the second shaping aperture; and a beam blanking aperture placed between the second shaping aperture and the object lens, a first crossover image being formed between the first and second shaping apertures, a second crossover image being formed in vicinity of the beam blanking aperture, the deflector placed between the first shaping aperture and the second shaping aperture including at least two deflectors, and a beam position on the beam blanking aperture being moved without moving the image of the first shaping aperture on the second shaping aperture, by deflecting the electron beam at time of blanking.