Manufacturing method of glass formed body and manufacturing method of optical component using same glass formed body

• Main Authors: GISEI WATANABE, ICHIYA UCHIDA
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2013
• Subjects: CHEMISTRY; GLASS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL

The invention provides a manufacturing method of a glass formed body and a manufacturing method of an optical component using the same glass formed body, wherein glass types of low stability (easy to crystallize) or glass of high proportion and high index of refraction, etc., are adopted, the melted glass is enabled to flow into a casing mould continuously, and a glass raw material of high quality can be stably manufactured. In the method, the melted glass accumulated in a container flows downward through a glass outlet pipe connected with the container and flows out of an outlet of the outlet pipe and continuously flows in the casting mould configured under the outlet for forming, and then the glass formed body is taken out. An outflow part has a glass outlet at one end. A hole shrinkage part, which is smaller than the outflow part in inner diameter and guides the melted glass to flow to the outflow part, is used as the glass outlet pipe. The diameter of the melted glass flow in the glass outlet pipe is expa