Sliding window screen for reducing resin refilling time in stereolithography

A system for additive manufacturing of an object in three dimensions consisting of an X dimension, a Y dimension, and a Z dimension, the system comprising:

• a tank configured to contain a liquid resin;
• a window screen configured to simultaneously deliver light and refill liquid resin into a build area in the tank;
• a build platform configured to be located within the tank for at least an initial portion of building the object;
• one or more translation stages (e.g., including a rotation stage) coupled with the build platform, the window screen and/or the tank, the one or more translation stages configured to move the tank and/or the build platform in the Z dimension, and the one or more translation stages configured to move the build platform and/or the window screen in the X dimension, the Y dimension, or both, including by rotation;
• a light projection device configured to emit light through the window and into the tank to cure the liquid resin;
• and
• a computer control system comprising at least one hardware processor and a storage device coupled with the hardware processor, the computer control system being coupled with the one or more translation stages to control movement of the tank, the build platform and/or the window screen, the computer control system being coupled with the light projection device to control emission of the light, and the storage device encoding a program configured to cause the computer control system to
• cause the light projection device to emit the light through the window screen into the tank to cure the liquid resin to form a first portion of the object in a current layer,
• cause the one or more translation stages to move the build platform and/or the window screen in the X dimension, the Y dimension, or both, including by rotation,
• cause the light projection device to emit the light through the window screen into the tank to cure the liquid resin to form a second portion of the object in the current layer, and
• cause the one or more translation stages to move the tank and/or the build platform in the Z dimension for a curing a next layer of the object.