Title:
METHOD FOR PRODUCING IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2011/135979
Kind Code:
A1
Abstract:
Disclosed is a method for producing an imaging lens in which a plurality of layers including one or more wafer lenses each provided with a lens portion that is formed from a curable resin are laminated on at least one surface of a substrate. The method for producing an imaging lens comprises, before lamination of the plurality of layers including the wafer lenses, a first lens portion cleaning step wherein carbon dioxide cleaning of the lens portions is carried out by spouting carbon dioxide so as to form dry ice particles and by causing the dry ice particles to hit on the lens portions of the wafer lenses or the vicinities of the lens portions. Consequently, deterioration of optical performance, changes in optical performance due to moisture absorption, and separation of the resin from the substrate can be prevented.
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Inventors:
SARUYA, Nobuhiro (INC. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)
Application Number:
JP2011/058500
Publication Date:
November 03, 2011
Filing Date:
April 04, 2011
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:
G02B3/00; B08B7/00; B32B7/02; B32B27/00; G02B13/00
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (Nikko Kagurazaka Bldg, 18 Iwatocho, Shinjuku-k, Tokyo 32, 〒1620832, JP)
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Claims: