US 2024/0402408 A1Published application

Optical laminate and image display device

AssigneeFUJIFILM Corporation

InventorsFumitake MITOBE, Ryoji GOTO, Yujiro YANAI

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Abstract

An optical laminate having excellent light transmitting properties is used for an image display device, includes in order: a first light absorption anisotropic layer; first and second retardation layers; and a second light absorption anisotropic layer, in which the first and second retardation layers are λ/2 wavelength plates, an angle formed between a slow axis of the first and second retardation layers is within a range of 45°±10°, the first and the second light absorption anisotropic layers contain a dichroic substance, an angle formed between a transmittance central axis of the first light absorption anisotropic layer and a normal direction of a surface thereof is 0° or more and 45° or less, and an angle formed between a transmittance central axis of the second light absorption anisotropic layer and a normal direction of a surface thereof is 0° or more and 45° or less.

Claims20

Dependent claims

An optical laminate comprising in order:

a first light absorption anisotropic layer;
a first retardation layer;
a second retardation layer;
and
a second light absorption anisotropic layer,
wherein the first retardation layer and the second retardation layer are λ/2 wavelength plates,
an angle formed between a slow axis of the first retardation layer and a slow axis of the second retardation layer is within a range of 45°±10°,
the first light absorption anisotropic layer and the second light absorption anisotropic layer contain a dichroic substance,
an angle formed between a transmittance central axis of the first light absorption anisotropic layer and a normal direction of a surface of the first light absorption anisotropic layer is 0° or more and 45° or less, and
an angle formed between a transmittance central axis of the second light absorption anisotropic layer and a normal direction of a surface of the second light absorption anisotropic layer is 0° or more and 45° or less.

7 more elements

Dependencies are inferred from the claim text.