Mould for glass lens moulding and glass lens moulding method

Abstract

The invention relates to a die and a method for forming a glass lens. The die for forming the glass lens comprises a lower die core, wherein the lower die core is formed by a bottom plate and a lower cylinder which is integrally connected to the upper surface of the bottom plate and extended upwards; a concave which is arranged on the upper end face of the lower cylinder forms a lower die cavity; an upper die core is arranged above the lower die core and formed by a roof plate and an upper cylinder which is integrally connected to the lower surface of the roof plate and extended downwards; a concave which is arranged on the lower end face of the upper cylinder forms an upper die cavity; tubular die sleeves are sleeved on the outer walls of the lower cylinder and the upper cylinder; a glass forming raw material is placed into the lower die cavity of the lower die core; and after heating and annealing, a formed die is taken out from an outlet of an annealing area and then arranged in normal-temperature air and naturally cooled to the normal temperature, and the formed glass lens is taken out. The forming die can greatly improve the qualified rate of products, and the forming method adopts the mode of free pressure, can improve the production efficiency, and simultaneously can greatly reduce the cost.

Description

technical field [0001] The invention discloses a mold for forming a glass lens, and also discloses a method for forming a glass lens by using the mold for forming a glass lens. Background technique [0002] Isothermal molding technology has now become one of the most advanced optical parts manufacturing technology methods in the world, and has entered the production and practical stage in many countries. The popularization and application of this technology is a major revolution in the processing of optical glass parts in the optical industry. Because this technology can directly press and form precise aspheric optical parts, it has created an era in which optical instruments can widely use aspheric glass optical parts. Therefore, it also brings new changes and developments to the optical system design of optoelectronic instruments, which not only reduces the size and weight of optical instruments, saves materials, reduces the workload of optical parts coating and workpiece...

AI Technical Summary

Problems solved by technology

[0016] This method of isothermally pressing the glass and the mold together is called the isothermal pressing method. The disadvantage of this method of manufacturing glass optical parts is that it takes a long time to heat up and cool down, so the production speed is very slow. Protect the vapor pressure device, so the molded glass must have a glass with a lower Tg point

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