System for the lithography-based additive manufacturing of three-dimensional (3D) structures

Device for the lithography-based additive manufacturing of three-dimensional structures, comprising:

• a building platform defining a building plane;
• a light engine configured for dynamic patterning of light in an exposure field of said light engine;
• a material transport unit comprising first drive means configured to transport a material layer across the exposure field;
• second drive means configured to cause relative movement of the light engine with respect to the building platform along a displacement path extending parallel to the building plane;
• first control means configured to control said first and second drive means so that there is no relative movement of the material layer and the building platform in said exposure field during said relative movement of the light engine relative to the building platform;
• pattern data feeding means configured to feed a sequence of pattern section data to the light engine at an adjustable feeding rate for causing the light engine to emit a sequence of pattern sections at said feeding rate during said relative movement of the light engine and the building platform along the displacement path;
• a linear encoder configured to sense a position and/or a velocity of the light engine relative to the building platform;
• and second control means for adjusting the feeding rate of the pattern data feeding means based on the position or the velocity sensed by the linear encoder.