| 摘要 |
PROBLEM TO BE SOLVED: To provide a stereolithography by which the generation of a distortion in a photo fabrication article is inhibited and thereby, a highly accurate shaping process is realized. SOLUTION: A square exposed region 100 is divided into a large number of pixels 102, then the pixels 102 are exposed to a light so that not less than two adjacent pieces of the pixel 102 are not simultaneously exposed to the light, and the unexposed pixels 104 are exposed so that not less than two adjacent pieces of the pixel 104 are not simultaneously exposed to the light. Thus one layer lot of a cured resin layer is cured by exposing it to the light twice. Consequently, the adjacent pixels are not simultaneously exposed and the curing shrinkage of the cured resin layer 1 occurs only within the range of one pixel, and a distortion attributed to the curing shrinkage is not propagated to the adjacent pixels. For the described reasons, the generation of the distortion of the optically shaped article is significantly inhibited and the highly accurate shaping process is realized. |
