Lens, image display device, and virtual reality display apparatus
AssigneeFUJIFILM Corporation
InventorsNaoyoshi YAMADA, Shinpei YOSHIDA
Life of this patent
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Abstract
A lens, image display device, and virtual reality display apparatus are provided that suppress ghosting when used in a pancake-lens VR system. The lens includes a retardation layer that converts circularly polarized light into linearly polarized light. The retardation layer includes first and second optically anisotropic layers having reverse wavelength dispersibility, and at least one of these layers is formed by immobilizing a twistedly aligned liquid crystal compound with a helical axis in the thickness direction. The image display device includes an image display panel, an absorptive polarizer, and the retardation layer in this order. The virtual reality display apparatus includes the lens or the image display device.
Claims20
A lens comprising:
- a retardation layer which converts circularly polarized light into linearly polarized light,
- wherein the retardation layer includes a first optically anisotropic layer and a second optically anisotropic layer,
- the first optically anisotropic layer and the second optically anisotropic layer have reverse wavelength dispersibility, and
- at least one of the first optically anisotropic layer or the second optically anisotropic layer is a layer obtained by immobilizing a twistedly aligned liquid crystal compound with a helical axis in a thickness direction.
An image display device comprising, in the following order:
- an image display panel;
- an absorptive polarizer;
- and
- a retardation layer which converts circularly polarized light into linearly polarized light,
- wherein the retardation layer includes a first optically anisotropic layer and a second optically anisotropic layer,
- the first optically anisotropic layer and the second optically anisotropic layer have reverse wavelength dispersibility, and
- at least one of the first optically anisotropic layer or the second optically anisotropic layer is a layer obtained by immobilizing a twistedly aligned liquid crystal compound with a helical axis in a thickness direction.
Dependencies are inferred from the claim text.