Patent ID: 8142179

Claim:
A stereolithography apparatus configured to fabricate a three-dimensional model by forming a cured layer by irradiating an interface of a photocurable resin with light corresponding to sectional data of the three-dimensional model and staking the cured layer, the stereolithography apparatus comprising: a container holding the photocurable resin and having a constraining window at the bottom of the container to constrain the interface of the photocurable resin, the constraining window having oppositely facing first and second surfaces, the first surface facing the photocurable resin; a vertical movement table movable in a vertical direction orthogonal to the interface of the photocurable resin; an optical system configured to form the cured layer between the vertical movement table and the constraining window by irradiating the interface of the photocurable resin with light through the constraining window; and a position constraining mechanism moveable in the vertical direction and configured to substantially flatten the constraining window by applying a force in the vertical direction to the second surface of the constraining window from the outside of the container when the cured layer is formed by the optical system.