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    PEEKING PREVENTION SYSTEM, METHOD OF USING PEEKING PREVENTION SYSTEM, AND METHOD OF PEEKING PREVENTION
    3.
    发明公开
    PEEKING PREVENTION SYSTEM, METHOD OF USING PEEKING PREVENTION SYSTEM, AND METHOD OF PEEKING PREVENTION 审中-公开

    公开(公告)号：US20240103307A1

    公开(公告)日：2024-03-28

    申请号：US18358260

    申请日：2023-07-25

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota ,  Masahiro Yaegashi ,  Masanori Otsuka

    IPC: G02F1/13 ,  G02F1/1335

    CPC classification number: G02F1/1323 ,  G02F1/133528

    Abstract: A peeking prevention system includes: a display device having a display plane from which to emit linearly polarized light; a partition to delimit from the surroundings a space in which displaying is to be provided by the display device, the partition having a light-transmitting portion through which the inside of the space is viewable; and an optical stack placeable in opposing relationship with the display plane of the display device. The light-transmitting portion includes a transparent substrate and a first polarizing layer, the first polarizing layer having a first absorption axis that is parallel to a first direction. The optical stack includes a second polarizing layer having a second absorption axis that is parallel to a second direction, the second direction being orthogonal to the first direction, and a ½ wave plate at a side of the second polarizing layer facing the display plane.

    POLARIZING FILM LAMINATE
    4.
    发明公开
    POLARIZING FILM LAMINATE 审中-公开

    公开(公告)号：US20230287247A1

    公开(公告)日：2023-09-14

    申请号：US18016467

    申请日：2021-07-19

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota

    IPC: C09J7/38 ,  G02B5/30

    CPC classification number: C09J7/38 ,  G02B5/3025 ,  C09J2301/302 ,  C09J2301/12 ,  C09J2301/312

    Abstract: The present invention provides a polarizing film laminate having reworkability. The polarizing film laminate of the present invention has a configuration in which a polarizing plate including a polarizer, a first pressure-sensitive adhesive layer, a supporting substrate, and a second pressure-sensitive adhesive layer having a smaller pressure-sensitive adhesive strength to glass than the first pressure-sensitive adhesive layer are laminated in the stated order.

    WHITEBOARD FILM, WHITEBOARD, PEEP PREVENTION SYSTEM
    5.
    发明申请
    WHITEBOARD FILM, WHITEBOARD, PEEP PREVENTION SYSTEM 有权

    公开(公告)号：US20230123755A1

    公开(公告)日：2023-04-20

    申请号：US17915526

    申请日：2021-10-14

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota ,  Masahiro Yaegashi

    IPC: G03B21/604 ,  G02B5/30 ,  B43L1/00

    Abstract: A whiteboard film (100) according to an embodiment of the present invention includes: a diffuse reflection layer (40) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection layer (40) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction. A whiteboard (100a) according to an embodiment of the present invention includes: a diffuse reflection plate (40a) to diffuse-reflect visible light; an absorptive polarizing layer (20) having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer (10) being disposed between the diffuse reflection plate (40a) and the absorptive polarizing layer (20) and having a second transmission axis that is substantially parallel to the first direction.

    METHOD OF ESTIMATING VIEW BLIND LEVEL AND METHOD OF PRODUCING VIEW BLIND SPACE
    7.
    发明申请
    METHOD OF ESTIMATING VIEW BLIND LEVEL AND METHOD OF PRODUCING VIEW BLIND SPACE 有权

    公开(公告)号：US20250006148A1

    公开(公告)日：2025-01-02

    申请号：US18752908

    申请日：2024-06-25

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota ,  Motosuke Katayama

    IPC: G09G3/36 ,  G02B27/28

    Abstract: Provided is a method of estimating a view blind level of a space, which is partitioned through use of a partition having a polarizing view blind film including a polarizer bonded thereto, and in which a display is arranged to be blinded when visually recognized through the polarizing view blind film, the method including calculating a predicted value of the view blind level when the display is observed from an outer side of the partition based on the following formula (1): Y=10{circumflex over ( )}(2.27×10−2×X1+2.41×10−4×X2−6.19×10−1)  (1) where Y represents a predicted value (%) of the view blind level, X1 represents an angle (°) formed by a vertical plane including a front direction of the display and a vertical plane including an observation direction, and X2 represents a height (mm) of an observation position.

    POLARIZED PARTITION, POLARIZED PARTITION SET, AND SPACE PARTITIONED USING SAME
    8.
    发明公开
    POLARIZED PARTITION, POLARIZED PARTITION SET, AND SPACE PARTITIONED USING SAME 审中-公开

    公开(公告)号：US20240094453A1

    公开(公告)日：2024-03-21

    申请号：US18274235

    申请日：2021-12-21

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota ,  Yufeng Weng

    IPC: G02B5/30

    CPC classification number: G02B5/3025 ,  G02B5/3083

    Abstract: According to the present invention, a technology by which the design property of a section can be improved while a desired portion in the section is shielded can be achieved. The present invention provides a polarized partition set, including: a first polarized partition, which includes a polarizer A1 and a retardation layer having an in-plane retardation Re(550) of 100 nm or more, and in which an angle formed by an absorption axis direction of the polarizer A1 and a slow axis direction of the retardation layer is more than 10° and less than 80°, or more than 100° and less than 170° clockwise or counterclockwise with respect to the absorption axis direction of the polarizer A1; and a second polarized partition, which includes a polarizer B and is arranged at a predetermined interval from the first polarized partition.

    WHITEBOARD FILM SYSTEM, WHITEBOARD SYSTEM, AND PEEKING PREVENTION SYSTEM
    9.
    发明公开
    WHITEBOARD FILM SYSTEM, WHITEBOARD SYSTEM, AND PEEKING PREVENTION SYSTEM 审中-公开

    公开(公告)号：US20230333420A1

    公开(公告)日：2023-10-19

    申请号：US18135313

    申请日：2023-04-17

    Applicant: NITTO DENKO CORPORATION

    Inventor： Yuji Toyota ,  Masahiro Yaegashi ,  Saori Yamamoto

    IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/13357

    CPC classification number: G02F1/1323 ,  G02F1/133528 ,  G02F1/133606

    Abstract: A whiteboard film system includes: a whiteboard film; a plurality of light-emitting devices to emit infrared light onto a surface of the whiteboard film at a viewer's side; and a plurality of photodetection devices to receive the infrared light emitted from the plurality of light-emitting devices, the plurality of photodetection devices being provided so as to at least partly oppose the plurality of light-emitting devices. A whiteboard film includes: a diffuse reflection layer to diffuse-reflect visible light; an absorptive polarizing layer having a first transmission axis that is parallel to a first direction; and a reflective polarizing layer being disposed between the diffuse reflection layer and absorptive polarizing layer and having a second transmission axis that is substantially parallel to the first direction.

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