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    OPTICAL MEMBER, OPTICAL ELEMENT AND METHOD FOR PRODUCING OPTICAL MEMBER
    1.
    发明申请
    OPTICAL MEMBER, OPTICAL ELEMENT AND METHOD FOR PRODUCING OPTICAL MEMBER 有权

    公开(公告)号：US20250102429A1

    公开(公告)日：2025-03-27

    申请号：US18725845

    申请日：2022-12-02

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Kouichiro AKIYAMA ,  Hiroshi SATOZONO

    IPC: G01N21/3581

    Abstract: There is provided an optical member for terahertz. The optical member is constituted by a molded body containing a mixture of an organic nonlinear optical material and an excipient. There is also provided an optical element including: the optical member; and a support member configured to support the optical member. There is also provided a method for manufacturing an optical member for terahertz. The method includes: a first process of mixing an organic nonlinear optical material and an excipient to form a mixture; and a second process of forming a molded body of the mixture by applying a pressure to the mixture after the first process.

    CRYSTAL FORM DETERMINATION METHOD
    2.
    发明申请
    CRYSTAL FORM DETERMINATION METHOD 有权

    公开(公告)号：US20240418641A1

    公开(公告)日：2024-12-19

    申请号：US18703413

    申请日：2022-10-26

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Kazuhiro TAKAHASHI ,  Kouichiro AKIYAMA ,  Hiroshi SATOZONO

    IPC: G01N21/3581 ,  G01N21/3563

    Abstract: A crystal form determination method includes a first process of preparing a measurement target object; a second process of entering a terahertz wave to the measurement target object and detecting the terahertz wave from the measurement target object to acquire a plurality of detection results corresponding to a plurality of times separated from each other; and a third process of determining a type of crystal form contained in the measurement target object. In the third process, when a frequency characteristic having a third peak at a third frequency different from a first frequency related to a first peak corresponding to an anhydride and a second frequency related to a second peak corresponding to a hydrate exists among the plurality of frequency characteristics, determination is made that the crystal form different from the anhydride and the hydrate is contained in the measurement target object.

    DISPERSION STABILITY EVALUATION METHOD, AND DISPERSION STABILITY COMPARISON METHOD
    3.
    发明公开
    DISPERSION STABILITY EVALUATION METHOD, AND DISPERSION STABILITY COMPARISON METHOD 审中-公开

    公开(公告)号：US20240142360A1

    公开(公告)日：2024-05-02

    申请号：US18280497

    申请日：2022-03-24

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Kazuhiro TAKAHASHI ,  Kouichiro AKIYAMA ,  Hiroshi SATOZONO

    IPC: G01N15/04 ,  G01N15/00

    CPC classification number: G01N15/042 ,  G01N2015/0053 ,  G01N2015/045

    Abstract: A dispersion stability evaluation method is a method for evaluating a dispersion stability of dispersoid dispersed in a dispersion medium. The dispersion stability evaluation method includes a first step of holding a sample including the dispersion medium and the dispersoid on a reflective surface, and a second step of causing terahertz waves to be incident on the reflective surface from a side opposite to the sample and detecting the terahertz waves reflected by the reflective surface. In the second step, while a state where the dispersoid are allowed to move toward the reflective surface is maintained, a plurality of detection results respectively corresponding to a plurality of times apart from each other are acquired.

    HYGROSCOPICITY EVALUATION METHOD AND WATER CONTENT EVALUATION METHOD
    6.
    发明公开
    HYGROSCOPICITY EVALUATION METHOD AND WATER CONTENT EVALUATION METHOD 审中-公开

    公开(公告)号：US20230258620A1

    公开(公告)日：2023-08-17

    申请号：US18095575

    申请日：2023-01-11

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Tetsuya UCHIDA ,  Kouichiro AKIYAMA ,  Hiroshi SATOZONO ,  Tomoyuki HAKAMATA

    IPC: G01N33/24 ,  G01N21/552 ,  G01N21/3581

    CPC classification number: G01N33/246 ,  G01N21/552 ,  G01N21/3581

    Abstract: A hygroscopicity evaluation method includes: a first step of preparing a first sample and a second sample; a second step of acquiring a first detection result for the first sample and a second detection result for the second sample by making a terahertz wave incident on each of the first and second samples; and a third step of evaluating the hygroscopicity of a measurement target object based on a first frequency characteristic calculated from the first detection result and a second frequency characteristic calculated from the second detection result. In the third step, the magnitude of the hygroscopicity of the measurement target object is evaluated based on the difference between the magnitude of a first peak of the first frequency characteristic in a reference frequency range and the magnitude of a second peak of the second frequency characteristic in the reference frequency range.

    DRUG EVALUATION METHOD AND DRUG EVALUATION DEVICE
    9.
    发明申请
    DRUG EVALUATION METHOD AND DRUG EVALUATION DEVICE 有权
    药物评估方法和药物评估装置

    公开(公告)号：US20130187050A1

    公开(公告)日：2013-07-25

    申请号：US13742616

    申请日：2013-01-16

    Applicant: Hamamatsu Photonics K.K.

    Inventor： Gen TAKEBE ,  Yoichi KAWADA ,  Kouichiro AKIYAMA

    IPC: G01N21/35

    CPC classification number: G01N21/3577 ,  G01N21/3563 ,  G01N21/3586 ,  G01N21/552

    Abstract: The drug evaluation device obtains, by an attenuated reflection method using a terahertz wave, an evaluation absorption spectrum for a frequency with respect to a liquid to be evaluated. When crystalline particles are suspended in a liquid, an absorption peak having a peak area corresponding to the amount of suspension appears in its absorption spectrum. Therefore, whether or not and by what ratio crystalline particles are suspended in the liquid can be determined according to whether or not the absorption peak exists and the peak area. When amorphous particles are suspended in the liquid, the baseline of its absorption spectrum lowers according to the ratio of amorphous particles suspended in the liquid. Therefore, whether or not and by what ratio amorphous particles are suspended in the liquid can be determined according to the lowering amount of the baseline.

    Abstract translation: 药物评价装置通过使用太赫兹波的衰减反射法获得关于待评价液体的频率的评价吸收光谱。 当结晶颗粒悬浮在液体中时，具有对应于悬浮液量的峰面积的吸收峰出现在其吸收光谱中。 因此，可以根据是否存在吸收峰和峰面积来确定晶体颗粒悬浮在液体中的比例和比例。 当无定形颗粒悬浮在液体中时，其吸收光谱的基线根据悬浮在液体中的无定形颗粒的比例而降低。 因此，可以根据基线的降低量来确定无定形颗粒悬浮在液体中的比例和比例。

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