FIELD: optics.
SUBSTANCE: invention relates to production of micro-sized optical elements with a refraction index gradient, which can be used for focusing and collimating light beams and other tasks for controlling electromagnetic radiation in the visible and X-ray wavelength range. Technical result is achieved by implementing a modified method for 3D printing of microelements using two-photon polymerisation, which enables to produce microstructures of an arbitrary shape. Local variation of used radiation power during printing leads to different degree of conversion of monomers into polymer material, and, consequently, to different value of refraction index.
EFFECT: providing the possibility of making optical elements of arbitrary shape with a complex gradient of refraction index, including for X-ray radiation.
14 cl, 9 dwg, 1 ex
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