3D A 3D printer having a large scale display screen exposure system being divided by a plurality of display screens

摘要

The present invention relates to a 3D printer having an exposure system for a large screen. The 3D printer of the present invention comprises: a resin tank for containing a liquid resin; A molding plate which is immersed in a resin bath or placed on a surface to form a molding plane and hardens the liquid resin on the molding plane to laminate the resin; A shaping plate driving unit for lifting and driving the shaping plate; An exposure system for irradiating image light toward the forming plane; And a controller for generating a layered unit image from the shape information on the molded object and dividing the unit image of the layer into a plurality of divided images and providing the exposed system with a time difference with the exposure system, A plurality of divided image lights having a time difference are received by receiving the divided images, and a plurality of divided image lights are irradiated on the molding plane by forming image light on a plurality of divided screens with a time difference. Since the present invention uses a single optical engine to form a large screen, it is possible to realize a 3D printer having a simple structure and a low cost as compared with a system using a plurality of optical engines.