Invention Grant
- Patent Title: Polarizing lens made of aromatic polycarbonate
- Patent Title (中): 偏光镜由芳香族聚碳酸酯制成
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Application No.: US14177390Application Date: 2014-02-11
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Publication No.: US08936363B2Publication Date: 2015-01-20
- Inventor: Terutaka Tokumaru , Katsunori Suzuki , Ken Shimomai , Masaki Yagoura , Kyousuke Nakamura , Akio Ohkubo
- Applicant: Mitsubishi Gas Chemical Company, Inc. , MGC Filsheet Co., Ltd.
- Applicant Address: JP Tokyo JP Tokorozawa-shi
- Assignee: Mitsubishi Gas Chemical Company, Inc.,MGC Filsheet Co., Ltd.
- Current Assignee: Mitsubishi Gas Chemical Company, Inc.,MGC Filsheet Co., Ltd.
- Current Assignee Address: JP Tokyo JP Tokorozawa-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-038675 20100224
- Main IPC: G02C3/00
- IPC: G02C3/00 ; G02C7/12 ; B29D11/00 ; B29C45/14 ; G02B5/30 ; B29C45/72 ; B29K69/00 ; B29K669/00 ; B29L11/00
Abstract:
The present invention relates to a polarizing lens molded by inserting a polarizing sheet bent into a sphere or an asphere after having an aromatic polycarbonate sheet bonded via an adhesive layer to both surfaces of a film with polarized nature into a mold, and injecting aromatic polycarbonate, wherein heat treatment at a temperature not less than a temperature of 50° C. lower than the glass transition point and less than the glass transition point for an appropriate time has been performed after injecting aromatic polycarbonate to approximate a designed value of the lens curvature.
Public/Granted literature
- US20140151911A1 POLARIZING LENS MADE OF AROMATIC POLYCARBONATE Public/Granted day:2014-06-05
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