OPTICAL LAMINATE, LIGHT-GUIDING ELEMENT, AND AR DISPLAY DEVICE

Title:

OPTICAL LAMINATE, LIGHT-GUIDING ELEMENT, AND AR DISPLAY DEVICE

Document Type and Number:

WIPO Patent Application WO/2020/075740

Kind Code:

A1

Abstract:

Provided are an optical laminate, a light-guiding element, and an AR display device that achieve a large diffraction angle. The present invention has, in order, a first optically anisotropic layer, a cholesteric liquid crystal layer, and a second optically anisotropic layer. The first optically anisotropic layer: is formed using a composition that includes a liquid crystal compound; and has a liquid crystal orientation pattern in which the orientation of an optical axis that originates from the liquid crystal compound changes while continuously rotating along at least one direction within a plane. The cholesteric liquid crystal layer is formed by fixing a cholesteric liquid crystal phase. The second optically anisotropic layer: is formed using a composition that includes a liquid crystal compound; and has a liquid crystal orientation pattern in which the orientation of an optical axis that originates from the liquid crystal compound continuously rotates along at least one direction within a plane. The orientation of the optical axis that originates from the liquid crystal compound of the first optically anisotropic layer and the orientation of the optical axis that originates from the liquid crystal compound of the second optically anisotropic layer continuously rotate along the same one direction and rotate in the same direction along the one direction.

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Inventors:

SAITOH YUKITO (JP)
SATO HIROSHI (JP)
SASATA KATSUMI (JP)

Application Number:

PCT/JP2019/039763

Publication Date:

April 16, 2020

Filing Date:

October 09, 2019

Export Citation:

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Assignee:

FUJIFILM CORP (JP)

International Classes:

G02B5/30; B32B7/023; G09F9/00

Domestic Patent References:

WO2018094096A1

2018-05-24

Foreign References:

JP2017522601A

2017-08-10

Attorney, Agent or Firm:

ITOH Hideaki et al. (JP)

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