19 May 2003 Compensation technology of glass molding accuracy
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To realize high-precision glass molding, some themes are yet to be settled, including performance of molding machine, molding conditions, material and accuracy of molds. To get a desired product profile with predetermined accuracy, molds must be manufactured according to specified accuracy. The present molding machine has a high transferability of fine profile, but causes minor difference in profiles by thermal expansion and contraction of mold and glass material as it involves a heating process. We clarify the results of experiment and verification of the two methods , in consideration of a heat expansion difference, molds is manufactured beforehand and feedback of geometrical error of prototype mold product to mold profile.
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Toshihisa Kamano, Toshihisa Kamano, } "Compensation technology of glass molding accuracy", Proc. SPIE 10314, Optifab 2003: Technical Digest, 1031403 (19 May 2003); doi: 10.1117/12.2283992; https://doi.org/10.1117/12.2283992

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