Patent ID: 6819401
Filing Date: 2004-11-16
Classification: G03F

Abstract:
An exposure method of exposing an exposure mask pattern on a photosensitive material, comprising:an incidence step of letting at least a part of light emitted from a light source be incident on said mask supported by a supporting device; and an imaging step of forming an image of said mask pattern on said photosensitive material by guiding the reflecting light from said mask such that said photosensitive material supported by said supporting device receives said reflecting light coming from an incidence direction which is different from said incidence direction of the light incident on said mask, wherein said imaging step comprises: a direction change step of changing the proceeding direction of said reflecting light from said mask through a half mirror arranged on the way of a light path between said light source and said mask; and further changing the proceeding direction of the light of which the proceeding direction has been changed through a plurality of reflecting morrors and at least one imaging lens, and focusing said light into an image on said photosensitive material.