US 12,345,907 B2
Optical laminate, laminated optical film, optical article, and virtual reality display device
Ryuji Saneto, Minamiashigara (JP); Yujiro Yanai, Minamiashigara (JP); Yohei Hamachi, Minamiashigara (JP); and Akira Maruyama, Minamiashigara (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Nov. 20, 2023, as Appl. No. 18/514,471.
Application 18/514,471 is a continuation of application No. PCT/JP2022/023315, filed on Jun. 9, 2022.
Claims priority of application No. 2021-097089 (JP), filed on Jun. 10, 2021; application No. 2021-131379 (JP), filed on Aug. 11, 2021; application No. 2021-166830 (JP), filed on Oct. 11, 2021; and application No. 2022-006662 (JP), filed on Jan. 19, 2022.
Prior Publication US 2024/0111198 A1, Apr. 4, 2024
Int. Cl. G02B 5/30 (2006.01); B32B 7/023 (2019.01); G02B 5/08 (2006.01); G02F 1/1335 (2006.01); G02F 1/13363 (2006.01); G02F 1/137 (2006.01); G02B 27/00 (2006.01)
CPC G02B 5/3016 (2013.01) [B32B 7/023 (2019.01); G02B 5/0816 (2013.01); G02F 1/133502 (2013.01); G02F 1/133635 (2021.01); G02F 1/133638 (2021.01); G02F 1/13718 (2013.01); B32B 2307/416 (2013.01); G02B 27/0018 (2013.01); G02F 1/133533 (2013.01); G02F 1/133536 (2013.01); G02F 1/133541 (2021.01); G02F 1/133543 (2021.01); G02F 2201/343 (2013.01); G02F 2413/13 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An optical laminate comprising:
two or more laminated reflective layers,
wherein each of the two or more laminated reflective layers includes
one reflective layer A that includes at least one or more cholesteric liquid crystal layers formed of a first liquid crystal compound which substantially consists of a rod-like liquid crystal compound and that does not include a cholesteric liquid crystal layer formed of a second liquid crystal compound which substantially consists of a disk-like liquid crystal compound, and
one reflective layer B that includes at least one or more cholesteric liquid crystal layers formed of the second liquid crystal compound which substantially consists of a disk-like liquid crystal compound and that does not include a cholesteric liquid crystal layer formed of the first liquid crystal compound which substantially consists of a rod-like liquid crystal compound,
in a case where, in two laminated reflective layers adjacent to each other in a lamination direction among the two or more laminated reflective layers, the one reflective layer A in one of the two laminated reflective layers and the one reflective layer A in the other of the two laminated reflective layers face each other, central wavelengths of reflected light of the one reflective layer A in one of the two laminated reflective layers and the one reflective layer A in the other of the two laminated reflective layers are different from each other, and
in a case where, in two laminated reflective layers adjacent to each other in the lamination direction among the two or more laminated reflective layers face each other, central wavelengths of reflected light of the one reflective layers B in one of the two laminated reflective layers and the one reflective layer B in the other of the two adjacent laminated reflective layers are different from each other.