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    CIRCULAR DICHROISM MEASURING METHOD AND CIRCULAR DICHROISM MEASURING DEVICE
    11.
    发明申请
    CIRCULAR DICHROISM MEASURING METHOD AND CIRCULAR DICHROISM MEASURING DEVICE 审中-公开

    公开(公告)号：US20170191928A1

    公开(公告)日：2017-07-06

    申请号：US15315433

    申请日：2015-05-18

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Hiroshi SATOZONO

    IPC: G01N21/19 ,  G01J4/04

    CPC classification number: G01N21/19 ,  G01J4/04 ,  G01N2021/216

    Abstract: Circular dichroism can be accurately measured even when a phase modulation element with a distortion component is used.A circular dichroism measuring method using a circular dichroism measuring device 2 includes a step of measuring Ip(t) (S101: phase amount change acquisition step), a step of measuring Is(t) (S102: sample data acquisition step), a step of converting Ip(t) to δ(t) (S103: phase amount change acquisition step), a step of converting Is(t) to Is(δ) (S104: analysis step/Is(δ) calculation step), and a step of performing curve fitting to calculate matrix elements S00, S02, and S03 (S105: analysis step/matrix element calculation step).

    CRYSTAL FORM DETERMINATION METHOD
    12.
    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.

    POLYMER RESIN ORIENTATION EVALUATION METHOD
    13.
    发明申请
    POLYMER RESIN ORIENTATION EVALUATION METHOD 有权

    公开(公告)号：US20210010934A1

    公开(公告)日：2021-01-14

    申请号：US16916402

    申请日：2020-06-30

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Atsushi NAKANISHI ,  Hiroshi SATOZONO

    IPC: G01N21/55 ,  G01N21/3581

    Abstract: Provided is a polymer resin orientation evaluation method including: setting an axis intersecting a front surface of an object to be inspected as an inspection axis, and acquiring an optical characteristic value of the object to be inspected with respect to a plurality of polarization directions of a terahertz wave around the inspection axis; and evaluating orientation of a polymer resin that constitutes the object to be inspected on the basis of a variation amount of the optical characteristic value with respect to change of the polarization direction.

    TIME RESPONSE MEASUREMENT APPARATUS AND TIME RESPONSE MEASUREMENT METHOD
    17.
    发明公开
    TIME RESPONSE MEASUREMENT APPARATUS AND TIME RESPONSE MEASUREMENT METHOD 审中-公开

    公开(公告)号：US20230304926A1

    公开(公告)日：2023-09-28

    申请号：US18120533

    申请日：2023-03-13

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Hisanari TAKAHASHI ,  Koyo WATANABE ,  Hiroshi SATOZONO ,  Kyohei SHIGEMATSU ,  Takashi INOUE

    IPC: G01N21/39 ,  G01N21/27 ,  G01N21/31

    CPC classification number: G01N21/39 ,  G01N21/27 ,  G01N21/314 ,  G01N2021/1789

    Abstract: A time response measurement apparatus includes a pulse formation unit, an attenuation unit, a waveform measurement unit, and an analysis unit. The pulse formation unit generates first pulsed light including a wavelength of pump light, second pulsed light including a wavelength of probe light, and third pulsed light including the wavelength of the pump light and the wavelength of the probe light, on a common optical axis. The attenuation unit transmits the first pulsed light, the second pulsed light, and the third pulsed light output from a sample arranged on the optical axis after being incident on the sample. An attenuation rate for the pump light is larger than an attenuation rate for the probe light. The analysis unit obtains a time response of the sample based on temporal waveforms of the first pulsed light, the second pulsed light, and the third pulsed light having passed through the attenuation unit.

    OPTICAL MEASUREMENT DEVICE AND OPTICAL MEASUREMENT METHOD
    19.
    发明申请
    OPTICAL MEASUREMENT DEVICE AND OPTICAL MEASUREMENT METHOD 有权

    公开(公告)号：US20220236416A1

    公开(公告)日：2022-07-28

    申请号：US17569592

    申请日：2022-01-06

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Hisanari TAKAHASHI ,  Koyo WATANABE ,  Hiroshi SATOZONO ,  Takashi INOUE

    IPC: G01S17/26 ,  G01S7/484 ,  G01S7/486

    Abstract: An optical measurement device includes a light pulse source, a light separator unit, a wave synthesizer unit, an optical detection unit, and a measurement unit. The light pulse source outputs a plurality of light pulses having different temporal waveforms and different center wavelengths. The light separator unit spatially separates the light pulses and causes the light pulses to be incident on a measurement object. The wave synthesizer unit synthesizes the light pulses reflected by the measurement object or transmitted through the measurement object and emits the synthesized light pulses onto one optical path. The optical detection unit receives the light pulses emitted from the wave synthesizer unit and outputs a temporal waveform signal of the light pulses. The measurement unit measures timings when the light pulses each are received by the optical detection unit or a difference between the timings on a basis of the temporal waveform signal.

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