MOLDING DIE FOR OPTICAL ELEMENT, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT

WIPO Patent Application WO/2012/002172

A1

Provided is a molding die for an optical element, wherein the inclination state of a core part corresponding to an insert can be precisely adjusted. Also provided is a method for manufacturing an optical element. Regarding a gap (GA1) on the leading end side between a core part (61) and a support part (62), when the diameter of a small diameter hole (62i) serving as an opening of the support part (62) is denoted by D and the diameter of a leading end (61c) of a rod part (61a) is denoted by d, the dimensional difference (D-d) is 1/1000 (mm) or more, and consequently a space for the leading end (61c) of the core part (61) to be displaced when the inclined posture of the core part (61) is adjusted by a spacer (65) can be sufficiently secured, and the characteristics of a lens (OL) serving as an optical element can be precisely controlled. Further, the dimensional difference (D-d) is 1/100 (mm) or less, thereby making it possible to prevent a phenomenon in which since the gap (GA1) formed between the leading end (61c) of the core part (61) and the small diameter hole (62i) of the support part (62) is too wide, resin gets into the gap (GA1) at the time of molding to thereby cause fins.

KANEIWA, Kei (Inc. 2970, Ishikawa-mach, Hachioji-shi Tokyo 05, 〒1928505, JP)

JP2011/063890

January 05, 2012

June 17, 2011

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Konica Minolta Opto, Inc. (2970, Ishikawa-machi Hachioji-shi Tokyo, 05, 〒1928505, JP)
コニカミノルタオプト株式会社 (〒05 東京都八王子市石川町２９７０番地 Tokyo, 〒1928505, JP)

B29C33/30; B29C45/36; B29L11/00

FUKUDA, Mitsuhiro (Kotani Bldg. 1F, 5-3 Uchikanda 2-chome Chiyoda-ku Tokyo, 47, 〒1010047, JP)

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