Title:
METHOD FOR PRODUCING OPTICAL ELEMENT AND OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2010/050309
Kind Code:
A1
Abstract:
A method for producing an optical element having improved optical properties, wherein changes in the optical properties due to a reflow process are prevented. The method for producing an optical element comprises a molding step wherein a molded optical element composed of a cured thermosetting resin which is obtained by curing a thermosetting resin composition containing a radically polymerizable monomer and a polymerization initiator in a heated mold. In the molding step, the temperature (t) of the mold is controlled so that the following relation is satisfied: (1-minute half-life temperature of polymerization initiator) + 10˚C < (temperature (t) of mold) < (glass transition temperature (Tg) of thermosetting resin as determined by TMA) - 8˚C.
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Inventors:
KOJIMA Takeshi (Inc. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)
Application Number:
JP2009/065997
Publication Date:
May 06, 2010
Filing Date:
September 14, 2009
Export Citation:
Assignee:
Konica Minolta Opto, Inc. (2970, Ishikawa-machi Hachioji-sh, 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)
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)
International Classes:
B29C33/02; B29C35/02; G02B1/04; G02B3/00; G02B7/02; B29K301/10; B29L11/00; H04N5/225
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