Patent ID: 8704192

Claim:
A drawing apparatus configured to perform drawing on a substrate with a plurality of charged particle beams, the apparatus comprising: an irradiation system including a collimator lens on which a diverging charged particle beam is incident; an aperture array configured to split the charged particle beam from the collimator lens into the plurality of charged particle beams; a lens array configured to form a plurality of crossovers of the plurality of charged particle beams from the aperture array; and a projection system including an element having a single aperture and configured to converge the plurality of charged particle beams corresponding to the plurality of crossovers and to project the plurality of charged particle beams having passed through the single aperture onto the substrate, wherein the lens array includes a correction lens array and a magnifying less array, the correction lens array including a converging lens eccentric relative to corresponding one of a plurality of apertures of the aperture array such that the plurality of charged particle beams converged according to aberration of the projection system are converged to the single aperture, and the magnifying lens array configured, so as to form the plurality of crossovers, to magnify a plurality of crossovers formed by the correction lens array, converging lenses included in the correction lens array having such focal lengths that the eccentric converging lens refracts a charged particle beam corresponding thereto, without shielding of the charged particle beam, so that the plurality of charged particle beams are converged to the single aperture, magnifying lenses included in the magnifying lens array having such focal lengths that the magnifying lenses respectively converge a plurality of charged particle beams, respectively converged by the converging lenses and then diverged, with convergent angles smaller than convergent angles of the plurality of charged particle beams respectively converged by the converging lenses.