- Patent Title: Light-shielding paint, light-shielding paint set, light-shielding film, optical element, method for producing light-shielding film, and method for producing optical element
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Application No.: US14818159Application Date: 2015-08-04
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Publication No.: US10240063B2Publication Date: 2019-03-26
- Inventor: Reiko Kubota , Yoji Teramoto , Shuhei Yamamoto
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A. Inc., IP Division
- Priority: JP2014-163211 20140808
- Main IPC: C09D163/00
- IPC: C09D163/00 ; C09D5/00 ; G02B5/00 ; G02B7/02 ; C08G59/50 ; C08G59/68 ; C08K3/22
Abstract:
A light-shielding paint includes an epoxy group-containing compound, an inorganic fine particle, a coloring agent, and an amine curing agent. The ratio (A′/A) of the mass (A′) of the amine curing agent to the active hydrogen equivalent (A) of the amine curing agent and the ratio (E′/E) of the mass (E′) of the epoxy group-containing compound to the epoxy equivalent (E) of the epoxy group-containing compound satisfy 0.1≤[(A′/A)/(E′/E)]≤0.45.
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