公开(公告)号：US20160085101A1

公开(公告)日：2016-03-24

申请号：US14959201

申请日：2015-12-04

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Katsufumi OHMURO ,  Akiko WATANO ,  Hiroshi SATO

IPC: G02F1/13363 ,  G02F1/1335

CPC classification number: G02F1/13363 ,  G02B5/22 ,  G02B5/305 ,  G02F1/133536 ,  G02F1/133617 ,  G02F2001/133543 ,  G02F2001/133614 ,  G02F2001/133638

Abstract: An optical sheet member includes a polarizing plate including a polarizer, a brightness enhancement film including a reflection polarizer, and a λ/4 plate, in which the reflection polarizer includes a first light reflecting layer which has a reflection center wavelength range of 430 nm to 480 nm, and is formed by fixing a cholesteric liquid crystalline phase emitting circular polarization light, a second light reflecting layer which has a reflection center wavelength range of 500 nm to 600 nm, and a third light reflecting layer which has a reflection center wavelength range of 600 nm to 650 nm, and both formed by fixing a cholesteric liquid crystalline phase emitting circular polarization light, and the brightness enhancement film includes the λ/4 plate satisfying 550 nm/4-25 nm

Abstract translation: 光学片构件包括偏振片，包括反射偏振片的亮度增强膜和λ/ 4板，其中反射偏振器包括反射中心波长范围为430nm至第 480nm，并且通过固定发射圆偏振光的胆甾型液晶相，具有500nm至600nm的反射中心波长范围的第二光反射层和具有反射中心波长范围的第三光反射层而形成 600nm至650nm，并且通过固定发射圆偏振光的胆甾型液晶而形成，并且亮度增强膜包括满足550nm / 4-25nm

公开(公告)号：US20160011352A1

公开(公告)日：2016-01-14

申请号：US14861309

申请日：2015-09-22

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Hiroshi SATO ,  Mitsuyoshi ICHIHASHI

IPC: G02B5/30 ,  H01L27/32 ,  H01L51/52

CPC classification number: G02B5/3083 ,  G02B5/3016 ,  G02B5/3025 ,  G02B5/3033 ,  H01L27/3232 ,  H01L51/5281

Abstract: A circularly polarizing plate includes a polarizing film, a first optically anisotropic layer, and a second optically anisotropic layer in this order, in which the first optically anisotropic layer contains a twisted aligned liquid crystal compound of which a helical axis is a thickness direction thereof, a helix angle of the liquid crystal compound is 28.6±10°, an absorption axis of the polarizing film and an in-plane slow axis of the second optically anisotropic layer are parallel or orthogonal to each other, Δnd and ReB(550) respectively fall in predetermined value ranges. The circularly polarizing plate can sufficiently suppress the mixing of black with other colors in a front direction when being stuck on a display apparatus. A retardation plate used for the circularly polarizing plate and an organic EL display apparatus that have the circularly polarizing plate are also provided.

Abstract translation: 圆偏光板依次包括偏光膜，第一光学各向异性层和第二光学各向异性层，其中第一光学各向异性层包含螺旋轴为其厚度方向的扭曲取向的液晶化合物， 液晶化合物的螺旋角为28.6±10°，偏振膜的吸收轴和第二光学各向异性层的面内慢轴彼此平行或正交，并且Re和ReB（550） 分别落在预定值范围内。 圆形偏光板当被粘贴在显示装置上时可以充分地抑制黑色与其他颜色在正面方向上的混合。 还提供了用于圆偏振板的延迟板和具有圆偏振板的有机EL显示装置。

公开(公告)号：US20250123145A1

公开(公告)日：2025-04-17

申请号：US19000213

申请日：2024-12-23

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Yujiro YANAI ,  Kazuya HISANAGA

IPC: G01J3/18 ,  G02F1/1335 ,  G02F1/1337

Abstract: Provided a spectroscopic system where a reduction in size can be achieved. The spectroscopic system includes an optical element, in which the optical element include a prism and a liquid crystal diffraction element disposed on a first surface of the prism directly or with another layer interposed between the prism and the liquid crystal diffraction element, the prism has a second surface tilted with respect to the first surface, a tilt angle of the second surface is 4° or more, the liquid crystal diffraction element includes a cholesteric liquid crystal layer, the cholesteric liquid crystal layer has 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, in a case where a length over which the orientation of the optical axis in the liquid crystal alignment pattern rotates by 180° is set as a single period, a length of the single period is 0.1 to 1.4 μm, and the spectroscopic system allows dispersion target light to be incident into the liquid crystal diffraction element side, reflects the incident light from the liquid crystal diffraction element, totally reflects the reflected light from a surface of the liquid crystal diffraction element opposite to the prism side, allows the totally reflected light to be incident into the prism, and emits the dispersed light from the second surface.

公开(公告)号：US20240369899A1

公开(公告)日：2024-11-07

申请号：US18774068

申请日：2024-07-16

Applicant: FUJIFILM Corporation

Inventor： Kazuya HISANAGA ,  Yujiro YANAI ,  Yukito SAITOH

IPC: G02F1/31

Abstract: Provided is a wavelength selective switch where loss caused by a twisted effect of liquid crystal molecules of a LCOS peripheral part is reduced and the loss is small. The wavelength selective switch includes: one or more input ports; one or more output ports; a polarization controller that adjusts a polarization state of light incident from the input ports; a dispersive element that demultiplexes wavelength-multiplexed light incident from the input ports; and a deflection element that controls deflection of the demultiplexed light, in which the deflection element is a liquid crystal on silicon (LCOS) including an optical compensation layer that is provided on an incident surface to compensate for diffraction loss of a peripheral part.

公开(公告)号：US20240103211A1

公开(公告)日：2024-03-28

申请号：US18497248

申请日：2023-10-30

Applicant: FUJIFILM Corporation

Inventor： Hiroshi SATO ,  Yukito SAITOH

IPC: G02B5/30 ,  G02B27/00 ,  G02B27/01

CPC classification number: G02B5/3016 ,  G02B27/0093 ,  G02B27/0172

Abstract: The present invention provides an optical element in which the occurrence of sidelobe is suppressed and a reflectivity is high, an image display apparatus, a head-mounted display, a sensing apparatus, and an eye tracking apparatus. The optical element according to the present invention includes: at least one reflecting layer pair that is a combination of two reflective layers where turning directions of circularly polarized light to be reflected are opposite to each other and at least a part of reflection wavelength ranges is an overlapping part, in which the reflective layer includes a cholesteric liquid crystal layer obtained by immobilizing a cholesteric liquid crystalline phase, 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 depth position corresponding to 10% of a total helical pitch number of the reflective layer from one surface to another surface side of the reflective layer is set as a depth position X, a depth position corresponding to 90% of the total helical pitch number of the reflective layer from the one surface to the other surface side of the reflective layer is set as a depth position Y, a region from the one surface to the depth position X is set as a first region, a region from the depth position X to the depth position Y is set as a second region, and a region from the depth position Y to the other surface is set as a third region, at least one of birefringences in the first region and the third region is less than a birefringence in the second region.

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：US20230161199A1

公开(公告)日：2023-05-25

申请号：US18151523

申请日：2023-01-09

Applicant: FUJIFILM Corporation

Inventor： Yukito SAITOH ,  Akiko WATANO

IPC: G02F1/13363 ,  G02F1/137 ,  G02F1/1335

CPC classification number: G02F1/13363 ,  G02F1/13718 ,  G02F1/133541 ,  G02F1/133553

Abstract: An optical element includes a cholesteric liquid crystal layer obtained by cholesterically aligning a liquid crystal compound, in which the cholesteric liquid crystal layer has a region where a refractive index nx in a slow axis direction and a refractive index ny in a fast axis direction in a plane satisfy nx>ny, a helical axis of the cholesteric alignment is parallel to a thickness direction of the cholesteric liquid crystal layer, and a helical pitch in the cholesteric alignment gradually changes in the thickness direction of the cholesteric liquid crystal layer.

公开(公告)号：US20230124399A1

公开(公告)日：2023-04-20

申请号：US18065339

申请日：2022-12-13

Applicant: FUJIFILM Corporation

Inventor： Yuki FUKUSHIMA ,  Keisuke KODAMA ,  Mitsuyoshi ICHIHASHI ,  Shunya KATOH ,  Yukito SAITOH ,  Takashi YONEMOTO ,  Hiroshi SATO

IPC: G02B5/30 ,  C08F20/30 ,  C09D129/04

Abstract: A liquid crystal composition includes: at least one of a compound represented by Formula (I) or a compound represented by Formula (II); and a rod-like liquid crystal compound having a polymerizable group that does not correspond to both of Formula (I) and Formula (II)

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.