METHOD FOR MANUFACTURING OPTICAL ELEMENTS USING MICROSTEREOLITHOGRAPHY 3D PRINTING Russian patent published in 2022 - IPC B29D11/00 

FIELD: polymer materials.

SUBSTANCE: invention relates to the manufacture of products made of polymer materials, namely microstereolithography 3D printing of optical elements of complex shape, and can be used for medical purposes in the production of individual contact lenses for patients with corneal deformity or for the manufacture of contact lenses with special properties, for example, used in augmented reality systems. The method includes: making a cuvette in which part of the inner surface of the bottom has a convex and/or concave shape corresponding to the shape of the first working surface of the manufactured optical element, filling the cuvette with a photoresist, forming an optical element when exposed to a photosensitive polymer with ultraviolet radiation with a given intensity distribution in the volume of the printed optical element, providing the formation of the required shape of the second working surface optical element, cleaning of the manufactured optical element from liquid unpolymerized photoresist and processing of the optical element by vacuum pressing to smooth out irregularities on the upper surface of the optical element formed under the action of ultraviolet radiation.

EFFECT: providing the possibility of manufacturing optical elements of arbitrary shape with a thickness from units of microns to 1 mm and a surface roughness of no more than 100 nm.

9 cl, 13 dwg