FIELD: production of image under article surface. SUBSTANCE: the image is formed from the regions of increased absorption of electromagnetic radiation, having the form of various figures, and the equipment for realization of the method is provided with a focusing device comprising a set at least of two various optical transducers forming under the material surface a focused beam with distribution of intensity corresponding to the shape and size of the produced figure. EFFECT: enhanced quality of image. 7 cl, 2 dwg
