公开(公告)号：US20220236587A1

公开(公告)日：2022-07-28

申请号：US17721997

申请日：2022-04-15

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Naoyoshi YAMADA

IPC: G02B30/56 ,  F21V8/00

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：US20220206302A1

公开(公告)日：2022-06-30

申请号：US17696416

申请日：2022-03-16

Applicant: FUJIFILM Corporation

Inventor： Jun ISHIYAMA ,  Fumitake MITOBE ,  Yujiro YANAI

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

Abstract: 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.

公开(公告)号：US20200326462A1

公开(公告)日：2020-10-15

申请号：US16913858

申请日：2020-06-26

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Michio NAGAI ,  Hiroshi SATO

IPC: G02B5/30 ,  G01S17/10 ,  G01S17/931 ,  G01S7/481

Abstract: An object is to provide an optical element that is thin and can gather and reflect light in a specific wavelength range in a predetermined direction, and a sensor including the above-described optical element. The optical element includes a cholesteric liquid crystal layer, 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 direction of the optical axis rotates by 180° in the in-plane direction in which the direction of the optical axis changes while continuously rotating is set as a single period, the cholesteric liquid crystal layer has in-plane regions having different lengths of the single periods in the liquid crystal alignment pattern.

公开(公告)号：US20190079380A1

公开(公告)日：2019-03-14

申请号：US16178165

申请日：2018-11-01

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Michio NAGAI ,  Akira YAMAMOTO

IPC: G03B21/62 ,  G02B5/30 ,  G02B27/09

Abstract: Provided are a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The transparent screen includes, in this order: a first λ/4 plate; a reflecting layer that has a structure obtained by immobilizing a cholesteric liquid crystalline phase and reflects a part of incidence light; and a polarizing film that has an absorption axis in a thickness direction.

公开(公告)号：US20190064411A1

公开(公告)日：2019-02-28

申请号：US16169638

申请日：2018-10-24

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Akira YAMAMOTO ,  Michio NAGAI

IPC: G02B5/30 ,  G03B21/14 ,  G03B21/604 ,  G03B21/62 ,  H04N9/31

Abstract: An object is to provide: a transparent screen having high transparency in which a hot spot caused by transmitted light can be reduced; and an image display system in which visibility of a screen is excellent and a hot spot is reduced by using the transparent screen. The object is achieved by the transparent screen including: a dot array in which dots obtained by immobilizing a cholesteric liquid crystalline phase are two-dimensionally arranged; and a layer that is obtained by immobilizing a cholesteric liquid crystalline phase.

公开(公告)号：US20190041270A1

公开(公告)日：2019-02-07

申请号：US16146131

申请日：2018-09-28

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Jun TAKEDA ,  Michio NAGAI ,  Akira YAMAMOTO

IPC: G01J4/04 ,  H01L27/146 ,  G02B5/30 ,  G01N21/21

Abstract: An object of the invention is to provide an optical laminated film capable of detecting a light polarization state with a simple configuration using components which are superior in productivity and have high versatility, and a polarization imaging sensor using the optical laminated film. An optical laminated film includes: first and second phase difference plates, each having a patterned optical anisotropic layer; and a polarizing plate having a polarization axis in one direction, the patterned optical anisotropic layers have a constant phase difference, are divided into a plurality of belt-like regions in the same plane, and have a plurality of units, each formed of the plurality of belt-like regions in which slow axis directions in one belt-like region coincide with each other, and slow axis directions in the respective belt-like regions are all different, and the first phase difference plate, the second phase difference plate, and the polarizing plate are laminated in this order such that the belt-like regions of the two phase difference plates intersect with each other.

公开(公告)号：US20180321577A1

公开(公告)日：2018-11-08

申请号：US16015513

申请日：2018-06-22

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Akira YAMAMOTO ,  Michio NAGAI

IPC: G03B21/60

Abstract: According to the present invention, there is provided a plurality of protruding portions that are formed on one surface of the support and have inclined surfaces parallel to each other; a cholesteric liquid crystal layer that is formed on each of the inclined surfaces of the protruding portions; and an overcoat layer that is laminated on the surface of the support on which the protruding portions are formed so as to cover the cholesteric liquid crystal layer, in which a normal line of each of the inclined surfaces of the protruding portions is parallel to a spiral axis of the cholesteric structure of the cholesteric' liquid crystal layer, an angle formed between a normal line of a surface of the overcoat layer and the spiral axis of the cholesteric structure is 5° to 42°, a difference in refractive index between the cholesteric liquid crystal layer and the protruding portion and a difference in refractive index between the cholesteric liquid crystal layer and the overcoat layer are 0.2 or less.

公开(公告)号：US20180172889A1

公开(公告)日：2018-06-21

申请号：US15883846

申请日：2018-01-30

Applicant: FUJIFILM Corporation

Inventor： Yujiro YANAI ,  Akira YAMAMOTO

IPC: G02B5/30 ,  E06B9/24

Abstract: Provided is a laminate including a first polarizer, a first patterned optical anisotropic layer, a second patterned optical anisotropic layer, and a second polarizer in this order and an optically anisotropic layer disposed between the second polarizer and the second patterned optical anisotropic layer, in which an angle formed between an absorption axis of the first polarizer and an absorption axis of the second polarizer is 90°±5°; each of the first patterned optical anisotropic layer and the second patterned optical anisotropic layer has a plurality of phase difference regions having different slow axis directions in a plane of the first patterned optical anisotropic layer or the second patterned optical anisotropic layer; a white display state and a black display state are switched with each other; none of the slow axis directions of first phase difference regions and the slow axis directions of second phase difference regions are parallel or orthogonal to the absorption axes and transmission axes of the two sheets of polarizers; and the optically anisotropic layer has Re_off(550) of 240 to 310 nm and Rth_off(550) of −50 to 50 nm. Also provided is a window.

公开(公告)号：US20180052264A1

公开(公告)日：2018-02-22

申请号：US15796531

申请日：2017-10-27

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Yujiro YANAI ,  Akira YAMAMOTO ,  Nobuhiko ICHIHARA ,  Daisuke KASHIWAGI ,  Michio NAGAI

IPC: G02B5/26 ,  G03B21/60

CPC classification number: G02B5/26 ,  G02B5/201 ,  G03B21/567 ,  G03B21/60 ,  G03B21/62

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 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, 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, in the portion, is in the range of 70° to 90°, and a plurality of dot row units in which two or more dots are adjacently arranged along one direction are formed.

公开(公告)号：US20170075052A1

公开(公告)日：2017-03-16

申请号：US15363109

申请日：2016-11-29

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Yujiro YANAI ,  Naoyoshi YAMADA ,  Takashi YONEMOTO

IPC: F21V8/00 ,  G02F1/1335

CPC classification number: G02B6/0026 ,  G02B6/005 ,  G02B6/0053 ,  G02F1/133528 ,  G02F2001/133614 ,  G02F2202/36 ,  H01L33/502 ,  H01L33/507

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.

Abstract translation: 提供一种波长转换构件，包括：波长转换层，其包含被激发光激发并发射荧光的量子点; 以及直接层叠在波长转换层上的相邻层，其中波长转换层和相邻层之间的界面的形状包括由凹部和凸部形成的不规则形状。 提供了一种背光单元，偏振片，液晶面板和液晶显示装置，包括波长转换构件。