METHOD OF PRODUCING APERTURE MEMBER

In one embodiment, an aperture member producing method includes applying a charged particle beam to a plurality of chip areas on a first substrate while changing a writing condition to write a first pattern corresponding to an aperture opening, processing the first substrate based on the written first pattern to form a second pattern, cutting out a chip area provided with the second pattern having desired accuracy from the first substrate to produce a template, allowing the template to come into contact with a resist overlying a front surface of a second substrate, separating the template from the hardened resist to pattern the resist with a transfer pattern, processing the second substrate using the transfer pattern as a mask to form a first recess, and etching a rear surface of the second substrate to form a second recess communicating with the first recess.