METHOD AND SYSTEM FOR PRECISION ADDITIVE PRINTING OF THREE-DIMENSIONAL STRUCTURES Russian patent published in 2023 - IPC B29C64/124 G03F7/20 

FIELD: precision additive printing of three-dimensional polymer structures.

SUBSTANCE: invention can be used for manufacturing of optical elements for microscopy, high-resolution tomography, spectroscopy, and fluorescence spectrometry. A distinctive feature of the method is the construction of the initial 3D model of the manufactured microstructure in the XYZ coordinate system, the manufacture of a calibration sample, followed by the determination of the average values of the sizes of the semiaxes of the ellipsoidal voxels formed in the sample. Then, taking into account the measured voxel sizes, the coordinates of the centres of the boundary voxels are determined. After that, the constructed model is corrected. Then the corrected model is divided into layers located parallel to the XY plane, with a step between the layers, having a size comparable to the size of the voxel along the Z axis. In each layer, the trajectories of the laser beam are formed in such a way that they do not go beyond the auxiliary surface that limits the exposure area photoresist and corresponding to the coordinates of the centres of boundary voxels. A system for fabricating three-dimensional microstructures is also disclosed.

EFFECT: technical result consists in increasing the accuracy of the shape of the working surface of the manufactured structure.

11 cl, 10 dwg, 3 tbl, 1 ex