CPC G02B 5/305 (2013.01) [G02B 1/041 (2013.01); G02B 5/3083 (2013.01); G02C 7/12 (2013.01)] | 6 Claims |
1. A method for producing a polarizing sheet having a curved shape, the method comprising:
placing a polarizing sheet including a polyamide resin film (1), a polarizing film, and a polyamide resin film (2) disposed in this order in such a manner that the polyamide resin film (1) side of the polarizing sheet is in contact with a mold heated at a temperature from 80 to 120° C. for curved surface molding;
bringing the sheet into close contact with the mold; and
transferring a shape of the mold by a vacuum molding method to the sheet to bring the sheet to have a curved shape,
wherein a retardation value of the polyamide resin film (1) is from 2000 to 2500 nm, and the retardation value of the polyamide resin film (1) and a retardation value of the polyamide resin film (2) satisfy Formula (r):
2000 nm<[Retardation Value of Polyamide Resin Film (1)]−[Retardation Value of Polyamide Resin Film (2)]<2500 nm (r).
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