Title:
A manufacturing method of the shielding member for optical apparatus
Document Type and Number:
Japanese Patent JP5984668
Kind Code:
B2
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
Masahiro Harada
Masahiro Harada
Application Number:
JP2012523828A
Publication Date:
September 06, 2016
Filing Date:
June 29, 2011
Export Citation:
Assignee:
Kimoto Co., Ltd.
International Classes:
G02B5/00; B32B7/02; B32B27/18; B32B27/30; G03B9/02; G03B9/10; G03B9/36
Domestic Patent References:
| JP2008241767A | 2008-10-09 | |||
| JP2008114463A | 2008-05-22 | |||
| JP2003004939A | 2003-01-08 | |||
| JP2004004600A | 2004-01-08 | |||
| JP2008152199A | 2008-07-03 | |||
| JP2003029314A | 2003-01-29 | |||
| JP2008241767A | 2008-10-09 |
Foreign References:
| WO2006106822A1 | 2006-10-12 | |||
| WO2006016555A1 | 2006-02-16 | |||
| WO2006106822A1 | 2006-10-12 | |||
| WO2006016555A1 | 2006-02-16 |
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