Patent ID: 7083405

Claim:
A photo-fabrication apparatus for performing three-dimensional fabrication by irradiating a photosensitive material with light, comprising: a light source; a spatial light modulator having a plurality of micromirrors arranged in a two-dimensional array, for spatially modulating light received from said light source by individually changing tilt angles of said plurality of micromirrors; a holding part for holding a photosensitive material to be irradiated with light which is spatially modulated by said spatial light modulator; and a controller for controlling tilt angles of said plurality of micromirrors to control a quantity of irradiation light for each of a group of irradiation regions on said photosensitive material among more than two levels and obtain an exposed depth of said photosensitive material at said each of said group of irradiation regions in accordance with a cumulative quantity of irradiation light emitted thereto, said group of irradiation regions corresponding to said plurality of micromirrors and being fixed onto said photosensitive material.