中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

248 records (took 0.021 seconds)

    RAMAN SCATTERING FROM ORBITAL AND SPIN ANGULAR MOMENTUM IN MATERIALS
    4.
    发明公开
    RAMAN SCATTERING FROM ORBITAL AND SPIN ANGULAR MOMENTUM IN MATERIALS 审中-公开

    公开(公告)号：US20240133814A1

    公开(公告)日：2024-04-25

    申请号：US18458988

    申请日：2023-08-30

    Applicant: Robert R. Alfano

    Inventor： Robert R. Alfano ,  Sandra Mamani Reyes

    IPC: G01N21/65

    CPC classification number: G01N21/65 ,  G01N2201/06113 ,  G01N2201/0633

    Abstract: A method for obtaining a polarized orbital angular momentum Raman spectrum using vector vortex beams, includes the steps of emitting a polarized laser light from a laser source. The polarized laser light is passed through a narrow band filter that is then passed through a section of wave plates (quarter or half wave plate) to generate polarized light (linear, circular, radial and azimuthal), then through a q-plate (vortex retarder or spiral plate) to give a vortex structure topology carrying orbital angular momentum with a helical phase. The polarized vector vortex light is then directed to contact a sample, thereby producing a Raman scatter beam. The Raman scatter beam is passed back and collected into a spectrometer, thereby obtaining a Raman scattering spectrum of the sample to investigate the matching of the multipoles of the material and the multipoles of the light. A method for transmission with Multiple expansions of orbital angular momentum in rat cerebellum tissue is also disclosed. In general, we use polarized Laguerre-Gaussian vector vortex beams as a topology multipole model to describe and study the light matter interaction for Raman and transmission using the fact that the optical vortices and material can possess Multipoles denoted as L in form of monopole (L=0), dipole (L=1), quadrupole (L=2), octupole (L=3), hexidecapole (L=4) and higher orders. These multipoles can be involved with the matching up with the symmetry of the moments involved with vibrational states in Raman processes.

    OPTICAL DEVICE
    5.
    发明公开
    OPTICAL DEVICE 审中-公开

    公开(公告)号：US20240102936A1

    公开(公告)日：2024-03-28

    申请号：US18373436

    申请日：2023-09-27

    Applicant: Yokogawa Electric Corporation

    Inventor： Kodai Murayama

    IPC: G01N21/85

    CPC classification number: G01N21/85 ,  G01N2201/0633 ,  G01N2201/0636 ,  G01N2201/0638

    Abstract: An optical device 1 includes: an optical element block 10 including optical elements that form an optical path P of light used for optical measurement, arranged around a measurement subject S so that the optical path P intersects the measurement subject S; and a rotation mechanism 20 configured to change an angle of the optical element block 10 relative to the measurement subject S so that the total length of the portion of the optical path P coincident with the measurement subject S changes.

    Discrete light detection device
    6.
    发明授权
    Discrete light detection device 有权

    公开(公告)号：US11892409B1

    公开(公告)日：2024-02-06

    申请号：US17973285

    申请日：2022-10-25

    Applicant: Taiwan RedEye Biomedical Inc.

    Inventor： Tsung-Jui Lin ,  Shuo-Ting Yan ,  Kuan-Wei Su

    IPC: G01J3/44 ,  G01N21/65 ,  G01J1/42

    CPC classification number: G01N21/65 ,  G01J1/42 ,  G01N2201/0633

    Abstract: The present invention includes a shell, a light emitter, a beam splitter, a convergent lens, an optical filter, a collimation unit, a discrete light detection unit, and a processing unit. The shell includes a sample well to contain a sample. The light emitter generates a detection beam towards the beam splitter, the detection beam is reflected by the beam splitter before being converged by the convergent lens onto the sample, and a Raman scattered beam is scattered from the sample. The Raman scattered beam respectively passes through the convergent lens, the beam splitter, the optical filter, and the collimation unit, allowing the collimation unit to collimate the Raman scattered beam into a collimated beam. The discrete light detection unit generates multiple light intensity signals according to the collimated beam received, and the processing unit generates a detection result according to the light intensity signals to help detect toxins.

    MULTI-TRACK RAMAN WELL PLATE READER
    8.
    发明公开
    MULTI-TRACK RAMAN WELL PLATE READER 审中-公开

    公开(公告)号：US20230204515A1

    公开(公告)日：2023-06-29

    申请号：US18087341

    申请日：2022-12-22

    Applicant: HORIBA INSTRUMENTS INCORPORATED

    Inventor： Nicolas VEZARD ,  Beth FINAMORE ,  Aashish TULADHAR

    IPC: G01N21/65 ,  G01N21/64

    CPC classification number: G01N21/65 ,  G01N21/6428 ,  G01N2201/06113 ,  G01N2201/0633 ,  G01N2201/0636 ,  G01N2201/08 ,  G01N2201/0635 ,  G01N2201/127

    Abstract: A microplate reader simultaneously obtains Raman measurements from samples contained in non-adjacent wells. At least two Raman probes are positioned perpendicularly above or below the microplate to simultaneously acquire Raman spectra data of the non-adjacent liquid samples. Each probe is coupled to a laser and a spectrometer and includes a lens focusing laser light within the sample and collecting light from the sample for the spectrometer. The spectrometer may include a 2D imaging sensor (sCMOS or CCD) to image light from multiple probes simultaneously, spaced from one another to reduce crosstalk. A positioner moves the microplate plate or probes to acquire data from a different subset of non-adjacent samples, and may also vary laser focus within wells during data acquisition. Multiple fluorescence probes may simultaneously acquire fluorescence data from the same samples, or non-adjacent samples. Probes may be fiber-coupled and positioned within a reaction chamber of a liquid handling system.

Patent Agency Ranking