Optical laminate, optical lens, virtual reality display apparatus, optically anisotropic film, molded body, reflective circular polarizer, non-planar reflective circular polarizer, laminated optical body, and composite lens
Provided are an optical laminate in which, for example, in a case of being applied to a pancake lens-type virtual reality display apparatus, light leakage can be reduced by canceling out expression of phase difference, change in phase difference, and the like caused by molding into a curved surface; an optical lens including the optical laminate; and a virtual reality display apparatus using the optical lens. The optical laminate includes a first optically anisotropic layer containing a negative birefringent resin, and a specific layer selected from the group consisting of a third optically anisotropic layer which is formed by immobilizing a uniformly aligned liquid crystal compound and a cholesteric liquid crystal layer which is formed by immobilizing a helically aligned liquid crystal compound, in which the first optically anisotropic layer and the specific layer have a curved surface portion.
1 . An optical lens comprising:
a lens base material having a curved surface part; and
an optical laminate, which is bonded to the curved surface part of the lens base material,
wherein the optical laminate comprises
a first optically anisotropic layer containing a negative birefringent resin; and
a specific layer selected from the group consisting of a third optically anisotropic layer which is formed by immobilizing a uniformly aligned liquid crystal compound and a cholesteric liquid crystal layer which is formed by immobilizing a helically aligned liquid crystal compound,
the first optically anisotropic layer and the specific layer have a curved surface portion.
2 . A virtual reality display apparatus comprising:
an image display device emitting polarized light; and
the optical lens according to claim 1 .
3 . The optical lens according to claim 1 ,
wherein a tan δ peak temperature of the negative birefringent resin is 170° C. or lower.
4 . A reflective circular polarizer comprising:
a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase,
wherein a helical pitch of the cholesteric liquid crystalline phase has an in-plane distribution.
5 . The reflective circular polarizer according to claim 4 ,
wherein the light reflecting layer includes a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase containing a rod-like liquid crystal compound and a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase containing a disk-like liquid crystal compound.
6 . The reflective circular polarizer according to claim 4 ,
wherein the light reflecting layer has a laminated structure in which a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase containing a rod-like liquid crystal compound and a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase containing a disk-like liquid crystal compound are alternately arranged.
7 . A laminated optical body obtained by laminating the reflective circular polarizer according to claim 4 , a retardation layer, and an absorption type linear polarizer in this order.
8 . A composite lens comprising:
a non-planar laminated optical body obtained by molding the laminated optical body according to claim 7 ; and
a lens.
9 . A virtual reality display apparatus comprising:
the composite lens according to claim 8 .
10 . A composite lens comprising:
a non-planar reflective circular polarizer; and
a lens,
wherein the non-planar reflective circular polarizer obtained by molding a reflective circular polarizer which includes a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase,
an in-plane distribution of a helical pitch of the cholesteric liquid crystalline phase is 1% or less.
11 . A virtual reality display apparatus comprising:
the composite lens according to claim 10 .
12 . The composite lens according to claim 10 ,
wherein the reflective circular polarizer is a reflective circular polarizer,
wherein the reflective circular polarizer comprises a light reflecting layer formed by immobilizing a cholesteric liquid crystalline phase, and
wherein a helical pitch of the cholesteric liquid crystalline phase has an in-plane distribution.
13 . An optically anisotropic film comprising:
a first optically anisotropic layer having an optical axis,
wherein the first optically anisotropic layer has a non-linearly aligned region in which at least an orientation of the optical axis continuously changes in a plane; and
wherein the orientation of the optical axis in the non-linearly aligned region is distributed in a point-symmetrical manner with at least one point as a center.
14 . The optically anisotropic film according to claim 13 ,
wherein an optical thickness of the first optically anisotropic layer in the non-linearly aligned region continuously changes in the plane.
15 . The optically anisotropic film according to claim 13 ,
wherein the first optically anisotropic layer is a retardation layer.
16 . The optically anisotropic film according to claim 13 ,
wherein the first optically anisotropic layer is a polarizer layer.
17 . The optically anisotropic film according to claim 15 ,
wherein the first optically anisotropic layer is formed by immobilizing at least a liquid crystal compound.
18 . The optically anisotropic film according to claim 13 , further comprising:
a second optically anisotropic layer having an optical axis,
wherein an orientation of the optical axis of the second optically anisotropic layer is uniform in a plane.
19 . A molded body obtained by molding the optically anisotropic film according to claim 18 into a three-dimensional shape including a curved surface,
wherein the optical axis of the first optically anisotropic layer and the optical axis of the second optically anisotropic layer form an angle of 45° in the non-linearly aligned region.