-
公开(公告)号：US10884176B2
公开(公告)日：2021-01-05
申请号：US16100562
申请日：2018-08-10
Applicant: FUJIFILM Corporation
Inventor： Yukito Saitoh , Yujiro Yanai , Junichi Hirakata , Ryota Matsubara , Kotaro Yasuda , Jun Watanabe
Abstract: Provided is a display device capable of switching between a wide viewing angle and a narrow viewing angle with a simple configuration and simple control. The problem is solved by providing a display element and an optical switching element which is disposed on a visible side of the display element, in which the optical switching element has a light guiding plate and a light source for causing light to be incident on an end surface of the light guiding plate, and 80% or more of the light emitted from the light guiding plate when the light source is turned on is emitted to a region at an angle of 30° or more with respect to a normal line of the light guiding plate on a surface on the opposite side of the display element.
-
公开(公告)号：US10585223B2
公开(公告)日：2020-03-10
申请号：US16546872
申请日：2019-08-21
Applicant: FUJIFILM Corporation
Inventor： Yukito Saitoh , Daisuke Kashiwagi , Ayako Muramatsu , Yujiro Yanai , Hideki Kaneiwa
IPC: G02B5/30
Abstract: Provided is a depolarizing film including a depolarizing layer composed of a first region and a second region having differing optical characteristics, wherein in the depolarizing layer, the ratio between the area of the first region and the area of the second region is 0.45:0.55 to 0.55:0.45, the first region is an optically anisotropic region causing 90° optical rotation of light that is incident on one surface of the depolarizing layer before the light is emitted from the other surface, and the second region is an optically isotropic region having optical isotropy.
-
公开(公告)号：US10295897B2
公开(公告)日：2019-05-21
申请号：US15678498
申请日：2017-08-16
Applicant: FUJIFILM Corporation
Inventor： Michio Nagai , Yoji Ito , Akira Yamamoto , Yukito Saitoh , Yujiro Yanai , Daisuke Kashiwagi , Nobuhiko Ichihara
Abstract: A transparent screen includes a substrate capable of transmitting light; and a plurality of dots formed on a surface of the substrate, each of the dots having wavelength-selective reflectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, and in the portion, the angle formed by the normal line to a line that is formed by a first one of the dark parts as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°.
-
公开(公告)号：US10267973B2
公开(公告)日：2019-04-23
申请号：US15363109
申请日：2016-11-29
Applicant: FUJIFILM Corporation
Inventor： Yukito Saitoh , Yujiro Yanai , Naoyoshi Yamada , Takashi Yonemoto
IPC: G02F1/1335 , F21V8/00 , H01L33/50
Abstract: Provided is a wavelength conversion member, including: a wavelength conversion layer containing a quantum dot which is excited by excitation light and emits fluorescent light; and an adjacent layer directly laminated on the wavelength conversion layer, in which the shape of an interface between the wavelength conversion layer and the adjacent layer includes an irregular shape formed of a concave portion and a convex portion. Provided are a backlight unit, a polarizing plate, a liquid crystal panel, and a liquid crystal display device: including the wavelength conversion member.
-
公开(公告)号：US10254639B2
公开(公告)日：2019-04-09
申请号：US15841606
申请日：2017-12-14
Applicant: FUJIFILM Corporation
Inventor： Nobuhiko Ichihara , Yujiro Yanai , Akira Yamamoto , Michio Nagai , Daisuke Kashiwagi , Yukito Saitoh
IPC: G03B21/604 , G02B5/26 , G03B35/26 , G02B5/09 , G02B5/24 , G02F1/1335 , G03B21/608 , G02B5/10 , G02B5/20 , G02B5/30 , G02B27/26 , G03B21/62
Abstract: A transparent screen for 3D display having excellent transparency and an excellent viewing angle, and a 3D display system are provided. The transparent screen for 3D display has a plurality of dots, each of the dots having wavelength selectivity and being formed of a liquid crystal material having a cholesteric structure, in which the cholesteric structure gives a striped pattern of bright parts and dark parts in a cross-sectional view of the dot observed by a scanning electron microscope, the dot includes a portion having a height that increases continuously to the maximum height in a direction extending from the edge toward the center of the dot, in the portion, the angle formed by the normal line to a line that is formed by a first dark part as counted from the surface of the dot on the opposite side of the substrate and the surface of the dot is in the range of 70° to 90°, and right-handed circularly polarized light and left-handed circularly polarized light are reflected by the plurality of dots.
-
Patent Agency Ranking
36.发明授权公开(公告)号：US10139535B2
公开(公告)日：2018-11-27
申请号：US15388569
申请日：2016-12-22
Applicant: FUJIFILM Corporation
Inventor： Akiko Watano , Toshio Hara , Hideaki Ito , Yukito Saitoh , Yujiro Yanai
IPC: G02B5/30 , G02B27/28 , B32B7/02 , C08J5/18 , B32B27/08 , B32B27/18 , B32B27/24 , B32B27/28 , B32B27/30 , B32B27/32 , B32B27/36
Abstract: The present invention provides a light polarization film capable of suppressing a decrease in light emission efficiency even when the film is continuously irradiated with light and suppressing a change in degree of polarization even under a wet heat environment, a method for manufacturing the same, a laminate, and a method for manufacturing the same. The light polarization film of the present invention includes a polymer, and quantum rods, in which the quantum rods are aligned such that a major axis of each of the quantum rods is parallel to one direction parallel to a surface of the light polarization film, a moisture content is 1.0% or less, and an oxygen permeability coefficient is 200 cc·20 μm/m2·day·atm or less.
-
公开(公告)号：US09933619B2
公开(公告)日：2018-04-03
申请号：US14865404
申请日：2015-09-25
Applicant: FUJIFILM Corporation
Inventor： Akiko Watano , Yujiro Yanai , Yukito Saitoh , Mitsuyoshi Ichihashi
CPC classification number: G02B27/0101 , G02B5/30 , G02B2027/011 , G02B2027/0121
Abstract: The present invention provides a member for projection image display, including a reflection layer and a retardation layer, wherein the reflection layer includes a cholesteric liquid crystal layer exhibiting selective reflection in a visible light region, the cholesteric liquid crystal layer is a layer formed from a liquid crystal composition containing a discotic liquid crystal compound, and a front phase difference of the retardation layer is in a range of 50 nm to 400 nm; and a projection image display system which includes the above member for projection image display, wherein the retardation layer is disposed on an incident light side relative to the reflection layer, and the incident light is p-polarized light that vibrates in a direction parallel to a plane of incidence, which is capable of displaying a clear image having high reflectance and high transmittance, without a problem of a double image.
-
公开(公告)号：US12259568B2
公开(公告)日：2025-03-25
申请号：US17721997
申请日：2022-04-15
Applicant: FUJIFILM Corporation
Inventor： Yujiro Yanai , Naoyoshi Yamada
Abstract: Provided is an image display apparatus that has a small overall apparatus volume and can be miniaturized. The image display apparatus includes an image display element; a light guide plate on which light emitted by the image display element is incident and which internally and totally reflects the light satisfying a total reflection condition to guide the light; and a retroreflective element that is provided on a surface of the light guide plate and retroreflects the light guided in the light guide plate.
-
公开(公告)号：US12248179B2
公开(公告)日：2025-03-11
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
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：US11947109B2
公开(公告)日：2024-04-02
申请号：US17343160
申请日：2021-06-09
Applicant: FUJIFILM Corporation
Inventor： Akihiro Anzai , Yujiro Yanai , Wataru Majima , Taketo Otani
CPC classification number: G02B27/0101 , B60K35/00 , G02B27/286 , B60K2370/1529 , B60K2370/39
Abstract: It is an object of the present invention to provide a projection image-displaying member having excellent suitability for polarizing sunglasses, a windshield glass, and a head-up display system. The projection image-displaying member has a first polarization converting layer, at least one selectively reflecting layer, and a second polarization converting layer in this order. The first polarization converting layer and the second polarization converting layer are layers formed by fixing a helical alignment structure of a liquid crystal compound. The number of pitches in the helical alignment structure and a film thickness satisfy all relational expressions below.
When the first polarization converting layer has a number of pitches x1 and a film thickness y1 (unit: μm),
0.3≤x1≤2.0 and (i)
y1≥1.86x1+0.13. (ii)
When the second polarization converting layer has a number of pitches x2 and a film thickness y2 (unit: μm),
0.25≤x2≤2.0, (iii)
y2≤1.37x2+5.5, and (iv)
y2≥1.37x2+0.25. (v)
-
-
-
-
-
-
-
-
-
Search Results
51
records
(took 0.024 seconds)
