Invention Grant
- Patent Title: Polarizing sheet and polarizing lens provided with same
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Application No.: US18074211Application Date: 2022-12-02
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Publication No.: US11940640B2Publication Date: 2024-03-26
- Inventor: Toshihiko Fujinaka , Hitomi Omae
- Applicant: DAICEL-EVONIK LTD.
- Applicant Address: JP Tokyo
- Assignee: DAICEL-EVONIK LTD.
- Current Assignee: DAICEL-EVONIK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP 17171788 2017.09.07
- The original application number of the division: US16645156
- Main IPC: G02B5/30
- IPC: G02B5/30 ; G02B1/04 ; G02C7/12

Abstract:
Provided is a polarizing sheet that can precisely impart a desired curved shape without causing whitening when bending is carried out. A polarizing sheet of an embodiment of the present invention having a structure in which a polyamide resin film (1), a polarizing film, and a polyamide resin film (2) are laminated in this order, wherein a retardation value of the polyamide resin film (1) is from 10 to 3000 nm, and the retardation value of the polyamide resin film (1) and a retardation value of the polyamide resin film (2) satisfy Formula (r):
[Retardation Value of Polyamide Resin Film (1)]−[Retardation Value of Polyamide Resin Film (2)]≥10 nm (r).
[Retardation Value of Polyamide Resin Film (1)]−[Retardation Value of Polyamide Resin Film (2)]≥10 nm (r).
Public/Granted literature
- US20230089288A1 POLARIZING SHEET AND POLARIZING LENS PROVIDED WITH SAME Public/Granted day:2023-03-23
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