Preparation method and preparation device for filament diameter of optical communication cylindrical lens

The invention provides a preparation method and a preparation device for a filament diameter of an optical communication cylindrical lens, and relates to the technical field of optical device manufacturing. The method includes the following steps: conveying the glass raw material into the wire drawing furnace; and melting the glass raw material in the wire drawing furnace to obtain a molten raw material, and carrying out wire drawing molding output on the molten raw material to obtain a wire material. In the process of conveying the glass raw materials into the wire drawing furnace, the glass raw materials entering the wire drawing furnace are firstly molten, the molten raw materials are subjected to wire drawing forming in the wire drawing furnace, and the glass raw materials entering the wire drawing furnace after being completely conveyed into the wire drawing furnace are sequentially molten and subjected to wire drawing forming. The melting and wiredrawing forming of the glass raw materials are completed