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MANUFACTURING METHOD FOR ASPHERICAL LENS MOLD, ASPHERICAL LENS ARRAY MOLD MANUFACTURED THEREBY, AND ASPHERICAL LENS ARRAY
MANUFACTURING METHOD FOR ASPHERICAL LENS MOLD, ASPHERICAL LENS ARRAY MOLD MANUFACTURED THEREBY, AND ASPHERICAL LENS ARRAY
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机译:球面透镜模具的制造方法,由此制造的球面透镜阵列及球面透镜阵列
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摘要
PROBLEM TO BE SOLVED: To provide a manufacturing method for an aspherical lens mold, an aspherical lens array mold manufactured thereby, and an aspherical lens array.;SOLUTION: As shown by (a), a layer 2 having an etching speed higher than that of a quartz glass substrate 1 is formed and a mask 3 having a circular opening is formed. The layer 2 is etched using a fluoric acid aqueous solution and, after etching advances up to the quartz glass substrate 1, etching anisotropic with respect to the layer 2 advances in the quartz glass substrate 1 as shown by (c). The mask 3 is removed and etching is again performed until at least the layer 2 is perfectly removed to form a recessed part 1A having an aspherical, shape in the quartz glass substrate 1 as shown by (e). This etched quartz glass substrate 1 is used as the aspherical lens mold.;COPYRIGHT: (C)2003,JPO
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