| 摘要 |
<p>On an occasion of molding a molded product from a mold, the mold for molding a molded product in a desired shape can be designed with high precision by correcting a shape change of the molded product. A mold 10 in which use surfaces 16 of an upper mold 11 and a lower mold 12 are formed to be design curved surfaces of an optical lens is prepared. A curved surface shape of the optical lens molded from this mold is measured, and a measured value is approximated by equation (1) which is an equation of an aspherical surface to specify a curved surface of the above-described optical lens as an aspherical surface. The curved surface of the above-described optical lens specified by the equation of the aspherical surface and a design curved surface of the above-described optical lens are compared to obtain an error between both the curved surfaces. Information corresponding to the error is used as correction information (entire shape correction information, local shape correction information), and the use surfaces in the upper mold and the lower mold in the above-described mold are corrected and designed. Mathematical Expression 14 Z = C �¢ Á 2 1 + 1 - 1 + K �¢ C 2 �¢ Á 2 + ˆ‘ i = 2 n A 2 �¢ i �¢ Á 2 �¢ i</p> |
