Title:
LIGHT-BLOCKING MEMBER FOR OPTICAL INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2012/005148
Kind Code:
A1
Abstract:
Disclosed is a light-blocking member that is for an optical instrument and has resilience even if made thin, and of which rupture, etc. of a film is difficult to arise. The light-blocking member for an optical instrument contains: a substrate comprising a synthetic resin film; and a light-blocking film that is formed on at least one side of the abovementioned substrate. The abovementioned light-blocking film is characterized by containing: a binder resin of which the hydroxyl value is at least 100 (mg KOH/g); carbon black; inorganic particles; and resin particles of which the average particle size is 1-10 µm. Also, the aforementioned resin particles are characterized by being cross-bridged polymethyl methacrylate particles.
Inventors:
HORIKAWA, Akira (LTD. Ibaraki Plant 13, Kitatone, Koga-sh, Ibaraki 13, 〒3060213, JP)
堀川 晃 (〒13 茨城県古河市北利根１３番地 株式会社きもと 茨城工場内 Ibaraki, 〒3060213, JP)
堀川 晃 (〒13 茨城県古河市北利根１３番地 株式会社きもと 茨城工場内 Ibaraki, 〒3060213, JP)
Application Number:
JP2011/064867
Publication Date:
January 12, 2012
Filing Date:
June 29, 2011
Export Citation:
Assignee:
KIMOTO CO., LTD. (19-1, Shinjuku 2-chome Shinjuku-k, Tokyo 22, 〒1600022, JP)
株式会社 きもと (〒22 東京都新宿区新宿二丁目１９番１号 Tokyo, 〒1600022, JP)
HORIKAWA, Akira (LTD. Ibaraki Plant 13, Kitatone, Koga-sh, Ibaraki 13, 〒3060213, JP)
株式会社 きもと (〒22 東京都新宿区新宿二丁目１９番１号 Tokyo, 〒1600022, JP)
HORIKAWA, Akira (LTD. Ibaraki Plant 13, Kitatone, Koga-sh, Ibaraki 13, 〒3060213, JP)
International Classes:
G02B5/00; B32B7/02; B32B27/00; B32B27/18; C08J7/04; C08K3/04; C08L101/00
Attorney, Agent or Firm:
MATSUYAMA, Hiroshi et al. (LTD. R&D Central laboratory 6-35, Suzuya 4-chome, Chuo-ku, Saitama-sh, Saitama 13, 〒3380013, JP)
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Claims:
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