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    Phase imaging apparatus, phase imaging method
    1.
    发明授权
    Phase imaging apparatus, phase imaging method 有权

    公开(公告)号：US12164267B2

    公开(公告)日：2024-12-10

    申请号：US17895411

    申请日：2022-08-25

    Applicant: THE UNIVERSITY OF TOKYO

    Inventor： Takuro Ideguchi ,  Keiichiro Toda ,  Miu Tamamitsu

    IPC: G03H1/00 ,  G01N21/45 ,  G03H1/02 ,  G03H1/08

    Abstract: A spatial modulator is provided on a plane conjugate to a sample plane on which a sample is to be placed. The spatial modulator spatially modulates illumination light irradiated to the sample 2 or object light that has passed through or that has been reflected by the sample. A dark-field optical system removes the non-scattered light component of the first object light affected by the spatial light modulator so as to generate second object light. An image sensor records a hologram based on the second object light. A calculation processing apparatus combines complex amplitude information based on the modulation pattern supplied to the spatial light modulator and complex amplitude information based on the hologram with respect to the second object light so as to acquire a phase distribution originating from the sample.

    High-speed Fourier-transform spectroscopy apparatus and spectroscopy method
    2.
    发明授权
    High-speed Fourier-transform spectroscopy apparatus and spectroscopy method 有权

    公开(公告)号：US11892354B2

    公开(公告)日：2024-02-06

    申请号：US17140319

    申请日：2021-01-04

    Applicant: THE UNIVERSITY OF TOKYO

    Inventor： Takuro Ideguchi ,  Kazuki Hashimoto

    IPC: G01J3/453 ,  G01J3/02 ,  G01J3/18

    CPC classification number: G01J3/4535 ,  G01J3/021 ,  G01J3/0224 ,  G01J3/0297 ,  G01J3/18 ,  G01J2003/4534

    Abstract: In a Fourier-transform spectroscopy apparatus, a scanning mirror is arranged on a light path of scanning light. The scanning mirror delays or advances the scanning light with respect to reference light according to the rotational angle of the scanning mirror from its initial position. A spectroscopic spectrum generating unit generates an interferogram based on the intensity of the detection target light obtained from the detection target, and Fourier transforms the interferogram thus generated. The spectroscopic spectrum generating unit corrects the nonlinearity of the group delay between an envelope of the reference light and an envelope of the scanning light, and corrects the nonlinearity of the phase shift between the respective envelopes.

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