公开(公告)号：US20250085466A1

公开(公告)日：2025-03-13

申请号：US18958112

申请日：2024-11-25

Applicant: FUJIFILM Corporation

Inventor： Ryuji SANETO ,  Yohei HAMACHI ,  Kenta MIYAHARA

IPC: G02B5/30 ,  G06F3/01

Abstract: An object of the present invention is to provide an optical laminate that can be used for a reflective circular polarizer with little occurrence of a ghost in a case of being used in a virtual reality display device, an electronic finder, or the like, a laminated optical film including the reflective circular polarizer, an optical article including the optical laminate, and a virtual reality display device including the optical article.
The optical laminate according to the embodiment of the present invention includes, in the following order, a first layer, a second layer, a third layer, and a fourth layer, in which all of the first layer to the fourth layer are cholesteric liquid crystal layers, all of the first layer to the fourth layer have light reflectivity, a central wavelength of reflected light of the first layer is within a range of 430 to 570 nm, a central wavelength of reflected light of the second layer is within a range of 550 to 670 nm, a central wavelength of reflected light of the third layer is within a range of 430 to 570 nm, a central wavelength of reflected light of the fourth layer is within a range of 550 to 670 nm, a sign of a retardation of the first layer in a film thickness direction at a wavelength of 550 nm and a sign of a retardation of the second layer in a film thickness direction at a wavelength of 550 nm are opposite to each other, and a sign of a retardation of the third layer in a film thickness direction at a wavelength of 550 nm and a sign of a retardation of the fourth layer in a film thickness direction at a wavelength of 550 nm are opposite to each other.