High index of refraction high detachable environmental measure heavily flint optical glass and production manner and weight

摘要

To provide SOLVED high refractive index and high dispersion of environmental dense flint optical glass. [MEANS FOR SOLVING PROBLEMS]% by weight of the composition, SiO ₂ 20~44%, TiO ₂ 22~34%, Nb ₂ O ₅ 5~22%, Na ₂ O7~18%, BaO9~17%, K ₂ O0~ is a _{3 0~0.5%} Sb ₂ O and 9%, CaO0~3%, ZrO ₂ 0~3%, SrO0~0.5%. The well mixed material that includes the following steps were 1) preparation, method for producing a high refractive index and high dispersion of environmental dense flint optical glass, to ensure uniformity. High temperature 2) of 1150~1300 ℃, and were melted in a glass liquid in tank kettle, matching of the refractive index of the glass liquid becomes better. Through homogenized thoroughly and clear, I was molded into glass ribbon plate glass liquid that has passed 3) refractive index. I annealed by slow cooling kettle 4) glass strips. Includes a kettle and slow cooling tank kettle, manufacturing facilities of high refractive index and high dispersion of environmental measures dense flint optical glass is connected to the automatic combustion control system is melting tank of the tank kettle. The optical glass of the present invention, PbO, which pollute the environment, does not contain GdO constituents by and As ₂ O _3, to produce an optical glass by employing the method of one melted at tank kettle of hot melt and to reduce the number, and improved optical permeability. None [Selection Figure]