公开(公告)号：US20210223581A1

公开(公告)日：2021-07-22

申请号：US17226168

申请日：2021-04-09

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Hiroshi SATO ,  Katsumi SASATA

IPC: G02F1/11 ,  G02F1/1335 ,  G02F1/137

Abstract: Provided are an optical laminate in which a large diffraction angle can be obtained, a light guide element, and an AR display device. The optical laminate includes, in the following order: a first optically-anisotropic layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction; a cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase; and a second optically-anisotropic layer that is formed of a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound continuously rotates in at least one in-plane direction, in which in the first optically-anisotropic layer and the second optically-anisotropic layer, the one in-plane directions in which the direction of the optical axis derived from the liquid crystal compound continuously rotates are the same, and rotation directions of the direction of the optical axis derived from the liquid crystal compound in the one in-plane direction are the same.

公开(公告)号：US20210149098A1

公开(公告)日：2021-05-20

申请号：US17158710

申请日：2021-01-26

Applicant: FUJIFILM Corporation

Inventor： Katsumi SASATA ,  Ryoji GOTO ,  Hiroshi SATO ,  Yukito SAITOH

IPC: G02B5/30

Abstract: Provided are an optical element including a first optically-anisotropic layer consisting of a cured layer of a composition including a first liquid crystal compound, in which the first optically-anisotropic layer has 0.24 or more of a refractive index anisotropy Δn550 which is measured with light having a wavelength of 550 nm, the first optically-anisotropic layer has a first liquid crystal alignment pattern in which a direction of an optical axis derived from the first liquid crystal compound continuously changes rotationally in at least one in-plane direction, and in the first liquid crystal alignment pattern, in a case where a length Λ over which the direction of the optical axis rotates 180° in a plane is defined as a single period, the length Λ of the single period is 1.6 μm or less; a method for forming a photo-alignment pattern; and a method for manufacturing an optical element.

公开(公告)号：US20200326579A1

公开(公告)日：2020-10-15

申请号：US16913897

申请日：2020-06-26

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Yukito SAITOH ,  Katsumi SASATA

IPC: G02F1/1347

Abstract: An object is to provide an optical element in which a wavelength dependence of reflection is small, a light guide element including the optical element, and an image display device including the light guide element. The optical element includes a plurality of cholesteric liquid crystal layers having different selective reflection center wavelengths, in which the cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, and in a case where a length over which the optical axis rotates by 180° in the in-plane direction is set as a single period, a permutation of lengths of selective reflection center wavelengths and a permutation of lengths of the single periods match each other in the cholesteric liquid crystal layers.

公开(公告)号：US20160297939A1

公开(公告)日：2016-10-13

申请号：US15188367

申请日：2016-06-21

Applicant: FUJIFILM Corporation

Inventor： Shusuke ARITA ,  Yutaka NOZOE ,  Katsumi SASATA ,  Hajime NAKAYAMA

IPC: C08J5/18 ,  G02B5/30 ,  G02B1/14 ,  G02F1/1335 ,  C08L33/12 ,  B29D11/00

CPC classification number: C08J5/18 ,  B29C41/28 ,  B29D11/00644 ,  B29K2033/12 ,  C08F220/14 ,  C08J2333/12 ,  C08K5/13 ,  C08K5/1345 ,  C08K5/34924 ,  C08L33/12 ,  C08L2203/206 ,  G02B1/14 ,  G02B5/3025 ,  G02B5/3033 ,  G02F1/133528

Abstract: A dope composition containing an acrylic resin having a weight average molecular weight of greater than or equal to 250,000; and an additive having a weight average molecular weight of less than 50,000, in which the acrylic resin includes a methyl methacrylate unit (a), and a mass fraction of an alkyl (meth)acrylate unit (b) other than methyl methacrylate is less than 5 mass %, has excellent manufacturing aptitude from the viewpoint of having a high drying speed and large breaking elongation at a time point of forming an un-stretched film, and enabling a crack at the time of being stretched to be suppressed, has a low haze value and an excellent surface shape at the time of preparing a polarizing plate protective film, and has excellent heat resistance; a polarizing plate protective film; a polarizing plate protective film manufacturing method; a polarizing plate; and a liquid crystal display device.

Abstract translation: 含有重均分子量大于或等于250,000的丙烯酸树脂的涂料组合物; 和重均分子量小于50,000的添加剂，其中丙烯酸树脂包括甲基丙烯酸甲酯单元（a），并且甲基丙烯酸甲酯以外的（甲基）丙烯酸烷基酯单元（b）的质量分数小于 5质量％，从形成未拉伸膜的时间点的干燥速度快，断裂伸长率高的观点出发，具有优良的制造性能，能够抑制拉伸时的裂纹，具有低的 雾度值和制备偏振片保护膜时的表面形状优异，耐热性优异; 偏光板保护膜; 偏振片保护膜制造方法; 偏振片; 和液晶显示装置。

公开(公告)号：US20160237230A1

公开(公告)日：2016-08-18

申请号：US15138754

申请日：2016-04-26

Applicant: FUJIFILM Corporation

Inventor： Katsumi SASATA ,  Hajime NAKAYAMA ,  Shusuke ARITA ,  Yutaka NOZOE

IPC: C08J5/18 ,  B29C41/02 ,  B29C55/00 ,  G02B5/30 ,  B29D7/01 ,  B29C69/00 ,  G02B1/14 ,  B29C41/00 ,  B29C55/14

CPC classification number: C08J5/18 ,  B29C41/003 ,  B29C41/02 ,  B29C55/005 ,  B29C55/143 ,  B29C69/00 ,  B29D7/01 ,  B29K2033/12 ,  B29K2105/0058 ,  B29K2105/16 ,  B29K2105/256 ,  B29K2995/0017 ,  C08F220/14 ,  C08J2333/12 ,  C08L33/12 ,  G02B1/14 ,  G02B5/3033 ,  G02F1/133528

Abstract: A polarizing plate protective film containing an acrylic resin, in which the acrylic resin includes a methyl methacrylate unit a, a mass fraction of an alkyl (meth)acrylate unit b other than methyl methacrylate is less than 5 mass %, a weight average molecular weight is 250,000 to 4,000,000, and a weight decreasing amount at the time of being heated at 140° C. for 1 hour is less than or equal to 0.5%, has excellent heat resistance and an excellent surface shape; a dope composition; a method for manufacturing a polarizing plate protective film; a polarizing plate; and a liquid crystal display device.

Abstract translation: 含有丙烯酸树脂的丙烯酸树脂的偏振片保护膜，其中丙烯酸树脂包括甲基丙烯酸甲酯单元a，甲基丙烯酸甲酯以外的（甲基）丙烯酸烷基酯单元b的质量分数小于5质量％，重均分子量 为250,000-4,000,000，在140℃下加热1小时时的重量减少量小于或等于0.5％，具有优异的耐热性和优异的表面形状; 涂料组合物; 一种制造偏振片保护膜的方法; 偏振片; 和液晶显示装置。

公开(公告)号：US20160187551A1

公开(公告)日：2016-06-30

申请号：US14978164

申请日：2015-12-22

Applicant: FUJIFILM Corporation

Inventor： Fumitake MITOBE ,  Shinya WATANABE ,  Katsumi SASATA ,  Hajime NAKAYAMA

IPC: G02B5/30 ,  G02B1/14 ,  C08J5/18 ,  G02F1/1335

CPC classification number: C08J5/18 ,  C08J2345/00 ,  G02B1/14 ,  G02B5/3033 ,  G02B5/3083 ,  G02F1/133528

Abstract: There is provided an optical film including: a layer A containing a cyclic olefin-based resin; and a layer B containing a cyclic olefin-based resin, and having a thickness thinner than a thickness of the layer A, wherein a glass transition temperature Tg[B] of the layer B is lower than a glass transition temperature Tg[A] of the layer A.

Abstract translation: 提供了一种光学膜，包括：含有环状烯烃类树脂的层A; 和含有环状烯烃类树脂的层B，其厚度比层A的厚度薄，其中B层的玻璃化转变温度Tg [B]低于玻璃化转变温度Tg [A] 层A.

公开(公告)号：US20240411075A1

公开(公告)日：2024-12-12

申请号：US18807047

申请日：2024-08-16

Applicant: FUJIFILM Corporation

Inventor： Naoyoshi YAMADA ,  Ryuji SANETO ,  Katsumi SASATA ,  Takehiro KASAHARA ,  Yohei HAMACHI

IPC: G02B5/30 ,  G02B1/08 ,  G02B27/01

Abstract: Provided are an optical laminate in which, for example, in a case of being applied to a pancake lens-type virtual reality display apparatus, light leakage can be reduced by canceling out expression of phase difference, change in phase difference, and the like caused by molding into a curved surface; an optical lens including the optical laminate; and a virtual reality display apparatus using the optical lens.
The optical laminate includes a first optically anisotropic layer containing a negative birefringent resin, and a specific layer selected from the group consisting of a third optically anisotropic layer which is formed by immobilizing a uniformly aligned liquid crystal compound and a cholesteric liquid crystal layer which is formed by immobilizing a helically aligned liquid crystal compound, in which the first optically anisotropic layer and the specific layer have a curved surface portion.

公开(公告)号：US20230229002A1

公开(公告)日：2023-07-20

申请号：US18168312

申请日：2023-02-13

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Yukito SAITOH ,  Ayako MURAMATSU ,  Daisuke KASHIWAGI ,  Katsumi SASATA

IPC: G02B27/01 ,  C09K19/02 ,  C09K19/36 ,  C09K19/56 ,  G02B5/18 ,  F21V8/00

CPC classification number: G02B27/0172 ,  C09K19/36 ,  C09K19/56 ,  C09K19/0208 ,  G02B5/1828 ,  G02B6/0016 ,  G02B6/0038 ,  G02B2027/0123 ,  G02B2027/0178

Abstract: Provided are an optical element that can make the brightness of light emitted from a light guide plate uniform, a light guide element, and an image display device. The optical element includes a patterned cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase, in which the patterned cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, and the patterned cholesteric liquid crystal layer has regions having different pitches of helical structures in a plane.

公开(公告)号：US20220382060A1

公开(公告)日：2022-12-01

申请号：US17848994

申请日：2022-06-24

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Katsumi SASATA ,  Yukito SAITOH

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/1337

Abstract: Provided are: an image display apparatus in which the utilization efficiency of a virtual image is high and the virtual image having high brightness uniformity can be displayed to be superimposed on a real image; and AR glasses including the image display apparatus. The image display apparatus includes: a display element; one or more cholesteric liquid crystal layers that reflect a display image of the display element; and a transparent reflection element that reflects the image reflected by the cholesteric liquid crystal layer to the cholesteric liquid crystal layer, in which at least one of the cholesteric liquid crystal layers has a structure having a region where a surface pitch changes in a thickness direction.

公开(公告)号：US20220283464A1

公开(公告)日：2022-09-08

申请号：US17752210

申请日：2022-05-24

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Katsumi SASATA ,  Yukito SAITOH

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13363

Abstract: Provided are an optical member in which emission of stray light to the outside can be suppressed and an image display apparatus. The optical member includes: a light guide element including a light guide plate and an incidence diffraction element and an emission diffraction element that are disposed on a main surface of the light guide plate; and a polarization element that blocks transmission of light leaking to a side of the emission diffraction element opposite to an emission side, wherein the emission diffraction element is a polarization diffraction element, the polarization element is disposed on the side of the emission diffraction element opposite to the emission side, and the polarization element is disposed at a position overlapping the emission diffraction element in a plane direction of the main surface of the light guide plate.