B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 11/00 (2006.01) B29C 43/02 (2006.01) C03C 15/00 (2006.01) C03C 17/02 (2006.01) G02B 3/02 (2006.01) G02B 27/30 (2006.01)
Patent
CA 2416746
A method for producing an aspherical structure according to the invention includes the steps of: forming a layer on a surface of a substrate so that the layer exhibits an etching rate distribution in a direction perpendicular to the surface of the substrate; forming a mask having a predetermined opening shape on the surface of the layer; and etching the layer to thereby form at least one aspherical concave portion. When each concave portion is used as a molding tool so that a resin with which the concave portion is filled is solidified and removed from the concave portion, an aspherical lens array can be formed accurately.
Hamanaka Kenjiro
Hashimoto Takahiro
Kittaka Shigeo
Nagata Hideshi
Tsunetomo Keiji
Nippon Sheet Glass Co. Ltd.
Riches Mckenzie & Herbert Llp
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