-
公开(公告)号：US20210311352A1
公开(公告)日：2021-10-07
申请号：US17343821
申请日：2021-06-10
Applicant: FUJIFILM Corporation
Inventor： Katsumi SASATA , Hiroshi SATO , Yukito SAITOH
IPC: G02F1/1335 , G02F1/13363 , G02B27/02 , F21V8/00
Abstract: Provided are a liquid crystal diffraction element that can make the brightness of light emitted from a light guide plate uniform and a light guide element. The liquid crystal diffraction element includes: an optically-anisotropic layer that is formed of a composition including a liquid crystal compound, in which the optically-anisotropic layer 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, and a diffraction efficiency of the optically-anisotropic layer increases from one side to another side in the one in-plane direction.
-
公开(公告)号：US20210311259A1
公开(公告)日：2021-10-07
申请号：US17344181
申请日：2021-06-10
Applicant: FUJIFILM Corporation
Inventor： Hiroshi SATO , Yukito SAITOH , Katsumi SASATA
Abstract: Provided are a light guide element in which incidence light can be emitted with high use efficiency and a wide FOV can be obtained for use in AR glasses, and an image display device and a sensing apparatus that include the light guide element. The light guide element includes a light guide plate and first to third diffraction elements, in which the first diffraction element diffracts incidence light in two or more different directions to be incident into the light guide plate, the second diffraction element includes a plurality of diffraction elements that diffract the light to the third diffraction element, the third diffraction element emits the light from the light guide plate, and at least one of the first diffraction element or the third diffraction element 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.
-
公开(公告)号：US20210149256A1
公开(公告)日：2021-05-20
申请号：US17158741
申请日：2021-01-26
Applicant: FUJIFILM Corporation
Inventor： Hiroshi SATO , Yukito SAITOH
IPC: G02F1/1337 , G02F1/1335
Abstract: Provided are a method of manufacturing an optical element in which an optically-anisotropic layer having a small amount of in-plane unevenness can be prepared, and an optical element. The method of manufacturing an optical element is a method of manufacturing an optical element, the optical element including an optically-anisotropic layer that is formed using a liquid crystal composition including a liquid crystal compound, an alignment film that aligns the liquid crystal compound, and a support, the method including: an alignment film forming step of forming the alignment film on one surface of the support; and an optically-anisotropic layer forming step of forming the optically-anisotropic layer on the alignment film, in which the alignment film includes a photo-alignable material, the alignment film forming step includes an exposure step of exposing different in-plane positions of the alignment film to light components having different polarization directions, and the support has a light absorption band that overlaps a light absorption band where a photochemical reaction occurs in the alignment film by irradiating the alignment film with the polarized light in the exposure step.
-
公开(公告)号：US20210149255A1
公开(公告)日：2021-05-20
申请号：US17158423
申请日：2021-01-26
Applicant: FUJIFILM Corporation
Inventor： Hiroshi SATO , Yukito SAITOH
IPC: G02F1/1337 , G02F1/1335
Abstract: Provided are a method of manufacturing an optical element in which an optically-anisotropic layer having a small amount of in-plane unevenness can be prepared, and an optical element. The method of manufacturing an optical element is a method of manufacturing an optical element, the optical element including an optically-anisotropic layer that is formed using a liquid crystal composition including a liquid crystal compound, an alignment film that aligns the liquid crystal compound, and a support, the method including: an alignment film forming step of forming the alignment film on one surface of the support; and an optically-anisotropic layer forming step of forming an optically-anisotropic layer on the alignment film, in which the alignment film includes a photo-alignable material, the alignment film forming step includes an exposure step of exposing different in-plane positions of the alignment film to light components having different polarization directions, and the support scatters light in a wavelength range of at least a part of a light absorption band where a photochemical reaction of the alignment film occurs by irradiating the alignment film with the polarized light in the exposure step.
-
公开(公告)号：US20210088703A1
公开(公告)日：2021-03-25
申请号：US16950541
申请日：2020-11-17
Applicant: FUJIFILM Corporation
Inventor： Yukito SAITOH , Hiroshi SATO
Abstract: The optical element is an optical element including a first optically anisotropic layer which is a cured layer of a liquid crystal composition containing a rod-like liquid crystal compound and a second optically anisotropic layer which is laminated on the first optically anisotropic layer and is a cured layer of a liquid crystal composition containing a disk-like liquid crystal compound, wherein each of the first optically anisotropic layer and the second optically anisotropic layer, has a liquid crystal alignment pattern in which an optical axis of the rod-like liquid crystal compound and an optical axis of the disk-like liquid crystal compound are respectively parallel to a surface of the optically anisotropic layer and oriented along at least one in-plane direction, orientation of the optical axis changes continuously and rotationally, and the orientation of the optical axis rotates by 180° with a period of 0.5 μm to 5 μm.
-
Patent Agency Ranking
公开(公告)号：US20210026062A1
公开(公告)日：2021-01-28
申请号：US17036612
申请日：2020-09-29
Applicant: FUJIFILM Corporation
Inventor： Hiroshi SATO , Yukito SAITOH , Ayako MURAMATSU , Mayumi NOJIRI , Hideyuki NISHIKAWA
Abstract: An object of the present invention is to provide: an optical element in which incident light can be transmitted or reflected at an angle in the predetermined direction and the wavelength dependence of the amount of transmitted light or reflected light is small; and an optical element including the optical element. The optical element according to the present invention comprises: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound and an infrared absorbing colorant, in which the optically-anisotropic layer 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, and an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a minor axis direction is higher than an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a major axis direction.
-
公开(公告)号：US20200348545A1
公开(公告)日：2020-11-05
申请号：US16913970
申请日：2020-06-26
Applicant: FUJIFILM Corporation
Inventor： Hiroshi SATO , Yukito SAITOH
IPC: G02F1/11 , G02F1/1335
Abstract: An object is to provide an optical element in which a wavelength dependence of refraction of transmitted light is small, and a light guide element including the optical element. The optical element includes: plurality of optically-anisotropic layers that are formed using a composition including a liquid crystal compound and have a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound continuously rotates in one in-plane direction; and a wavelength selective phase difference layer that is disposed between two optically-anisotropic layers and converts circularly polarized light in a specific wavelength range into circularly polarized light having an opposite turning direction, in which, in a case where, in the liquid crystal alignment pattern, 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 is set as a single period, a length of the single period in at least one optically-anisotropic layer is different from that of another optically-anisotropic layer.
-
公开(公告)号：US20190317352A1
公开(公告)日：2019-10-17
申请号：US16453007
申请日：2019-06-26
Applicant: FUJIFILM Corporation
Inventor： Yukito SAITOH , Daisuke KASHIWAGI
IPC: G02F1/1335
Abstract: The optical film is an optical film including a cholesteric liquid crystal layer, in which first regions having a first film thickness and second regions having a second film thickness which is smaller than the first film thickness are alternately arranged with a period P of 0.5 μm to 2.0 μm in at least one direction in a plane, a difference in film thickness between the first film thickness and the second film thickness is in a range of 0.2 μm to 1.0 μm, and a helical pitch of a cholesteric phase in the first region is different from a helical pitch of a cholesteric phase in the second region.
-
公开(公告)号：US20190004236A1
公开(公告)日：2019-01-03
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：US20160085102A1
公开(公告)日：2016-03-24
申请号：US14959466
申请日：2015-12-04
Applicant: FUJIFILM Corporation
Inventor： Katsufumi OHMURO , Yukito SAITOH , Akiko WATANO
IPC: G02F1/13363 , H01L29/786 , H01L27/12 , G02B5/30 , G02F1/1335
CPC classification number: G02F1/13363 , G02B5/22 , G02B5/305 , G02B5/3083 , G02F1/133528 , G02F1/133617 , G02F2001/133614 , H01L27/1225 , H01L29/7869
Abstract: An optical sheet member includes a polarizing plate including a polarizer (A); an optical conversion member (D); and a brightness enhancement film including a reflection polarizer (B), in which the brightness enhancement film has a reflection center wavelength range of 400 nm to 500, and the optical conversion member (D) converts a part of blue light which is transmitted through polarizer (B) and is incident on the optical conversion member (D), and has an emission center wavelength range of 400 nm to 500 nm and which has an emission center wavelength range of 500 nm to 600 nm and red light which has an emission center wavelength range of 600 nm to 700 nm, and transmits a part of the blue light. When the optical sheet member is incorporated in an image display device, front brightness, contrast, and a color reproducing region are enhanced, and color unevenness is reduced.
Abstract translation: 光学片部件包括具有偏振片（A）的偏振片; 光转换构件（D）; 以及包括反射偏振器（B）的亮度增强膜，其中亮度增强膜具有400nm至500的反射中心波长范围，并且光学转换构件（D）转换透射偏振器的一部分蓝色光 （B）入射到光转换部件（D）上，发光中心波长范围为400nm〜500nm，发光中心波长范围为500nm〜600nm，具有发光中心的红色光 波长范围为600nm至700nm，并且透射部分蓝光。 当光学片部件被结合在图像显示装置中时，前面的亮度，对比度和颜色再现区域增强，并且颜色不均匀性降低。
-
-
-
-
-
-
-
-
-
Search Results
158
records
(took 0.035 seconds)
