FIELD: glassmaking and glass instrumentation engineering. SUBSTANCE: invention is designed to using in the process of manufacturing filters for fine purification and separation of substances, microchannel plates, rigid fiber-optic emission-control elements, three-dimensional micron-size structures, etc. Method of invention includes assembling glass tubes into a packet stock, fixing one of its ends in the clamp of delivery unit, and heating the other end in furnace to form bulb followed by shaping. During the shaping, cylindrical part of structure or element is first formed by way of sealing the end of packet and shrinkage under reduced pressure, whereupon glass mass is drawn out upwards or downward depending on desired shape of side surface. On forming cylindrical part, shrinkage is no more than 10-15% of summary area of circle in glass-tube packet cross-section. Reduced pressure between softening temperature and flow temperature of glass ranges from 0.8 to 0.1 kg/sq.cm, and surface temperature of glass leaving the furnace does not exceed 2T where T is thermal stability of glass. Control device contains emission source and optical system in the form of multiple-capillary rigid fiber-optic structure or element, emission source being disposed outside or inside optical system and its structure or element being made of a multitude of layers with their surfaces close to or adequate to second-order surfaces. Each layer has passages to transmit emission. Diameters of passages are variable and, accordingly, variable is their radius of curvature relative to longitudinal symmetry axis of device. EFFECT: optimized process conditions and facilitated emission control. 16 cl, 12 dwg
