公开(公告)号：US10392484B2

公开(公告)日：2019-08-27

申请号：US15280020

申请日：2016-09-29

申请人： FUJIFILM Corporation

发明人： Jun Ishiyama

IPC分类号： G02F1/1335 ,  C08J5/18 ,  G02B1/14 ,  C08K5/205 ,  G02B5/30

摘要： A cellulose acylate film includes cellulose acylate and a compound A which has a group represented by the formula (G) as defined herein and in which a value obtained by dividing a molecular weight of the compound by a number of the groups represented by formula (G) contained in the compound is 200 or less, and a content of the compound A is 15% by weight or more based on a content of the cellulose acylate, the iodine diffusion index X as defined herein is less than 0.005 and the iodine diffusion index Y as defined herein is 0.015 or more.

公开(公告)号：US09971068B2

公开(公告)日：2018-05-15

申请号：US15083835

申请日：2016-03-29

申请人： FUJIFILM Corporation

发明人： Jun Ishiyama ,  Masaki Hachiya ,  Hirofumi Toyama

IPC分类号： G02B5/30 ,  B32B7/10 ,  G02B1/14

CPC分类号： G02B1/14 ,  B32B7/10 ,  G02B5/305

摘要： There is provided a cellulose acylate film including a core layer and a skin layer, in which a mixed layer is formed between the core layer and the skin layer, wherein a cellulose acylate included in the core layer has an average acyl substitution degree S2 of 2.00 to 2.55, a cellulose acylate included in the skin layer has an average acyl substitution degree S3 of 2.60 to 2.95, and an average acyl substitution degree S1 of the cellulose acylate of the mixed layer satisfies Equation (A1), and the mixed layer has a thickness of 100 nm to 300 nm: Equation (A1): S2+0.05×(S3−S2)

公开(公告)号：US11933987B2

公开(公告)日：2024-03-19

申请号：US17696416

申请日：2022-03-16

申请人： FUJIFILM Corporation

发明人： Jun Ishiyama ,  Fumitake Mitobe ,  Yujiro Yanai

IPC分类号： G02B27/01 ,  G02F1/1335 ,  G02F1/13363

CPC分类号： G02B27/0172 ,  G02F1/133509 ,  G02F1/133638 ,  G02B2027/0178

摘要： Provided are an optical filter, an optical device, and a head-mounted display which have a high light transmittance in a front direction and a wide real field of view. The optical filter includes a first anisotropic absorption layer, a first retardation layer, and a second anisotropic absorption layer in this order, each of the first anisotropic absorption layer and the second anisotropic absorption layer contains a dichroic colorant, an absorption axis of the dichroic colorant is perpendicular to a main surface, and the first retardation layer has polar angle dependence of retardation that has asymmetry about a normal direction with respect to incident light hitting at least one incident surface including a normal of a layer surface of the first retardation layer.