METHOD OF MANUFACTURE OF THREE-DIMENSIONAL PRODUCT, DEVICE FOR MANUFACTURE OF THREE-DIMENSIONAL PRODUCT AND METHOD OF MANUFACTURE OF SUCH DEVICE Russian patent published in 2017 - IPC B41F17/00 

FIELD: physics.

SUBSTANCE: method and apparatus for manufacturing a three-dimensional product with a compensation for the displacement of the focus position as a result of heating are proposed. The method, according to the invention, comprises pf the steps of: depositing the starting powder material on the carrier (16) and selectively acting by means of an irradiation unit (18) on the starting powder material deposited on the carrier (16) with electromagnetic or corpuscular emission to form a product from said material on the carrier (16) by successive layer forming. In this case, the irradiation unit (18) comprises of a radiation source (24) and a system of optical elements (30, 32, 34, 35). The operation of the irradiation unit (18) is controlled in accordance with an operating-temperature-dependent change in at least one optical property of the at least one optical element (30, 32, 34, 35) of the irradiation unit (18).

EFFECT: improved method.

15 cl, 2 dwg