公开(公告)号：US20240402408A1

公开(公告)日：2024-12-05

申请号：US18789108

申请日：2024-07-30

Applicant: FUJIFILM Corporation

Inventor： Fumitake MITOBE ,  Ryoji GOTO ,  Yujiro YANAI

IPC: G02B5/30

Abstract: An optical laminate having excellent light transmitting properties is used for an image display device, includes in order: a first light absorption anisotropic layer; first and second retardation layers; and a second light absorption anisotropic layer, in which the first and second retardation layers are λ/2 wavelength plates, an angle formed between a slow axis of the first and second retardation layers is within a range of 45°±10°, the first and the second light absorption anisotropic layers contain a dichroic substance, an angle formed between a transmittance central axis of the first light absorption anisotropic layer and a normal direction of a surface thereof is 0° or more and 45° or less, and an angle formed between a transmittance central axis of the second light absorption anisotropic layer and a normal direction of a surface thereof is 0° or more and 45° or less.

公开(公告)号：US20240272362A1

公开(公告)日：2024-08-15

申请号：US18633938

申请日：2024-04-12

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Makoto KAMO ,  Megumi SEKIGUCHI ,  Yujiro YANAI

IPC: G02B6/27

CPC classification number: G02B6/2713

Abstract: An object is to provide an optical coupling system having a simplified structure and a small size and an optical communication device using the optical coupling system. The object is achieved by an optical coupling system that couples a multi-core fiber and coupled devices to each other using a combination of a polarized light beam control element facing a light incident and emission surface of a multi-core fiber and a polarization-selective diffraction element that is positioned on a side of the polarized light beam control element opposite to the emission surface of the multi-core fiber and that faces the coupled devices.

公开(公告)号：US20240159589A1

公开(公告)日：2024-05-16

申请号：US18402286

申请日：2024-01-02

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Yujiro YANAI ,  Hiroshi SATO ,  Takashi YONEMOTO

IPC: G01J3/18

CPC classification number: G01J3/18

Abstract: Provided is a spectroscope excellent in measurement efficiency. A spectroscope that separates incident light to be measured including a spectroscopic unit that reflects and separates incident light and a detection unit that detects light reflected from the spectroscopic unit, in which the spectroscopic unit includes a first cholesteric liquid crystal layer obtained by fixing a cholesteric liquid crystalline phase and a second cholesteric liquid crystal layer obtained by fixing a cholesteric liquid crystalline phase, the first cholesteric liquid crystal layer and the second cholesteric liquid crystal layer have a liquid crystal alignment pattern in which an orientation of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, a rotation direction of the optical axis in the liquid crystal alignment pattern of the first cholesteric liquid crystal layer is opposite to a rotation direction of the optical axis in the liquid crystal alignment pattern of the second cholesteric liquid crystal layer, and a twisted direction of the liquid crystal compound in a thickness direction of the first cholesteric liquid crystal layer is opposite to a twisted direction of the liquid crystal compound in a thickness direction of the second cholesteric liquid crystal layer.

公开(公告)号：US20240142086A1

公开(公告)日：2024-05-02

申请号：US18529679

申请日：2023-12-05

Applicant: FUJIFILM Corporation

Inventor： Naoki KOITO ,  Yujiro YANAI ,  Makoto KAMO ,  Shinya WATANABE

IPC: F21V9/20 ,  G02B5/30

CPC classification number: F21V9/20 ,  G02B5/3016 ,  F21Y2115/10

Abstract: A lighting device that can switch between intensity distributions of emitted light with a simple configuration. The lighting device includes a light source, a polarization controller, and a polarizing plate, in which the polarization controller switches light emitted from the light source between light components having two or more different polarization states to be incident into the polarizing plate, and the polarizing plate functions as a diffraction grating that has two or more regions having different polarization states of transmitted light in an in-plane direction and where one or more regions among the regions are periodically disposed.

公开(公告)号：US20230141025A1

公开(公告)日：2023-05-11

申请号：US18148616

申请日：2022-12-30

Applicant: FUJIFILM Corporation

Inventor： Akiko WATANO ,  Yukito SAITOH ,  Takao TAGUCHI ,  Keisuke KODAMA ,  Shunya KATOH ,  Yujiro YANAI

IPC: G01B11/25

CPC classification number: G01B11/25

Abstract: Provided are: a sensor that is used as a distance-measuring sensor or the like and where a high SN ratio can be obtained and high-accuracy measurement can be performed even in a case where an environmental temperature changes; and a band pass filter that is used for the sensor. The sensor includes: a light source; a band pass filter; and a light-receiving element, in which the band pass filter includes a band pass layer and a support that supports the band pass layer, and in a case where a thermal expansion coefficient of the band pass layer is represented by α1, an elastic modulus of the band pass layer is represented by E1, a thermal expansion coefficient of the support is represented by α2, and an elastic modulus of the support is represented by E2, α1>α2 and E1

公开(公告)号：US20190219753A1

公开(公告)日：2019-07-18

申请号：US16360609

申请日：2019-03-21

Applicant: FUJIFILM Corporation

Inventor： Hideki KANEIWA ,  Yujiro YANAI ,  Akira YAMAMOTO

IPC: G02B5/30 ,  G02F1/1335 ,  C09K19/04

CPC classification number: G02B5/3016 ,  B32B7/02 ,  C09K19/0403 ,  E06B9/24 ,  G02B5/30 ,  G02B5/305 ,  G02B5/3066 ,  G02B5/3075 ,  G02F1/133536

Abstract: A laminate has a first polarizer, a first patterned optical anisotropic layer, a second patterned optical anisotropic layer, and a second polarizer, in which an angle formed between transmission axes of the polarizers is 90°+5°; each of the patterned optical anisotropic layers has three or more phase difference regions, which have different slow axis directions and in which the slow axis directions continuously change, in a plane of each of the first patterned optical anisotropic layer and the second patterned optical anisotropic layer; a transmission display state and a light-blocking display state are switched with each other by changing an angle formed between the slow axis direction of each of the phase difference regions of the first patterned optical anisotropic layer and the slow axis direction of each of the phase difference regions of the second patterned optical anisotropic layer that is superposed on each of the phase difference regions of the first patterned optical anisotropic layer; a combination of the patterned optical anisotropic layers is a combination of a +A plate and −A plate; and at least one of the polarizers is a reflective-type polarizer.

公开(公告)号：US20190154896A1

公开(公告)日：2019-05-23

申请号：US16235480

申请日：2018-12-28

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI

IPC: G02B5/30 ,  G02B5/18 ,  G02F1/1335

Abstract: An optical device includes a first polarizer which has an absorption axis in a thickness direction; a second polarizer which has an absorption axis in a thickness direction; and a functional layer which is disposed between the first polarizer and the second polarizer and is capable of switching between a state in which an in-plane retardation is 0 and a state in which an in-plane retardation is greater than 0. A display device includes a display element; and the optical device.

公开(公告)号：US20190094626A1

公开(公告)日：2019-03-28

申请号：US16185454

申请日：2018-11-09

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI

IPC: G02F1/13363 ,  G02F1/11 ,  G02F1/1335 ,  G02B5/30

Abstract: A viewing angle control film includes, in order, a first polarizer in which an absorption axis is in a direction perpendicular to a film surface; a first phase difference plate which is a λ/4 plate and has a patterned optical anisotropic layer; and a second phase difference plate which is a λ/4 plate and has a patterned optical anisotropic layer, in which the patterned optical anisotropic layers have a constant phase difference and are divided into a plurality of belt-like regions in the same plane, directions of slow axes in one belt-like region match each other and directions of slow axes of belt-like regions adjacent to each other are different from each other in the patterned optical anisotropic layer, and the belt-like region of the first phase difference plate and the belt-like region of the second phase difference plate are disposed so as to intersect with each other in a plane direction.

公开(公告)号：US20190094432A1

公开(公告)日：2019-03-28

申请号：US16197799

申请日：2018-11-21

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Michio NAGAI ,  Akira YAMAMOTO

IPC: G02B5/30 ,  G03B21/28 ,  G03B21/60 ,  G09F15/02

Abstract: Provided are a transparent film that allows scenery to be observed without color unevenness in a state where light is not irradiated, a transparent screen and an image display system including the transparent film, and a transparent poster. The transparent film includes: a support; a dot array that is formed on one surface of the support and in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and an overcoat layer that covers the dots and is laminated on the support, in which areas of the dots and distances between the dots are made to be irregular. As a result, the object is achieved.

公开(公告)号：US20190049791A1

公开(公告)日：2019-02-14

申请号：US16164231

申请日：2018-10-18

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI

IPC: G02F1/1335

Abstract: An optical device includes a polarizing plate; a composite film which contains a liquid crystal compound aligned in a thickness direction and a photochromic material and in which optical characteristics of the photochromic material are changed by emitting light and a light transmittance in the thickness direction becomes smaller than a light transmittance in a direction orthogonal to the thickness; and a light-emitting unit which emits light changing the optical characteristics of the photochromic material of the composite film.