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    DIFFRACTION ELEMENT AND IMAGING DEVICE
    41.
    发明申请
    DIFFRACTION ELEMENT AND IMAGING DEVICE 有权

    公开(公告)号：US20220229213A1

    公开(公告)日：2022-07-21

    申请号：US17595611

    申请日：2020-05-18

    Applicant: SONY GROUP CORPORATION

    Inventor： TUO ZHUANG ,  GUENTER TROLL ,  ALEXANDER GATTO

    IPC: G02B5/18 ,  G01J3/18

    Abstract: An imaging region of an image sensor is used more efficiently. A diffraction element (100) according to the embodiment includes a grating pattern, in which according to a position of light input to the diffraction element, the position being from a center of the diffraction element, an image forming position of diffracted light corresponding to the position of each wavelength is adjusted by adjusting a shape of the grating pattern at the position

    Echelle Spectrometer
    42.
    发明申请
    Echelle Spectrometer 有权

    公开(公告)号：US20220221340A1

    公开(公告)日：2022-07-14

    申请号：US17501695

    申请日：2021-10-14

    Applicant: PerkinElmer Health Sciences, Inc.

    Inventor： David M. Aikens

    IPC: G01J3/18 ,  G01J3/02 ,  G01J3/26

    Abstract: Spectrometers include an optical assembly with optical elements arranged to receive light from a light source and direct the light along a light path to a multi-element detector, dispersing light of different wavelengths to different spatial locations on the multi-element detector. The optical assembly includes: (i) a collimator arranged in the light path to receive the light from the light source, the collimator including a mirror having a freeform surface; (2) a dispersive sub-assembly including an echelle grating, the dispersive sub-assembly being arranged in the light path to receive light from the collimator; and (3) a Schmidt telescope arranged in the light path to receive light from the dispersive sub-assembly and focus the light to a field, the multi-element detector being arranged at the field.

    SILICON FOURIER TRANSFORM SPECTROMETER AND OPTICAL SPECTRUM RECONSTRUCTION METHOD
    44.
    发明申请
    SILICON FOURIER TRANSFORM SPECTROMETER AND OPTICAL SPECTRUM RECONSTRUCTION METHOD 有权

    公开(公告)号：US20220187129A1

    公开(公告)日：2022-06-16

    申请号：US17561679

    申请日：2021-12-23

    Applicant: Shanghai Jiao Tong University

    Inventor： Liangjun LU ,  Junjie DU ,  Linjie ZHOU ,  Jianping CHEN ,  Jiao LIU

    IPC: G01J3/45 ,  G01J3/18

    Abstract: A silicon Fourier transform spectrometer and an optical spectrum reconstruction method are disclosed. The spectrometer includes a waveguide input coupler, cascaded optical switches, unbalanced subwavelength grating (SWG) waveguide pairs, and a germanium silicon detector, where the cascaded optical switches are connected through unbalanced SWG waveguide pairs. The state of the optical switches are adjusted to digitally configure the optical path, so as to constitute a series of unbalanced Mach-Zehnder interferometer (MZI) arrays with different optical path differences, to realize a Fourier transform spectrometer based on spatial heterodyne. The optical spectrum is reconstructed by using a compressed sensing algorithm.

    OPTICAL DETECTION DEVICE, OPTICAL DETECTION METHOD, METHOD FOR DESIGNING OPTICAL DETECTION DEVICE, SAMPLE CLASSIFICATION METHOD, AND DEFECT DETECTION METHOD
    46.
    发明申请
    OPTICAL DETECTION DEVICE, OPTICAL DETECTION METHOD, METHOD FOR DESIGNING OPTICAL DETECTION DEVICE, SAMPLE CLASSIFICATION METHOD, AND DEFECT DETECTION METHOD 有权

    公开(公告)号：US20220155237A1

    公开(公告)日：2022-05-19

    申请号：US17440896

    申请日：2020-03-25

    Applicant: OSAKA UNIVERSITY

    Inventor： Tsuyoshi KONISHI

    IPC: G01N21/88 ,  G01J3/18 ,  G01J3/42 ,  G01N21/31

    Abstract: An optical detection device is an optical detection device that detects a desired wavelength component included in input light, and includes: a spectrometer including, for instance, a diffraction grating that receives the input light as an input and outputs an alignment of spectra each of which is a duplication of a spectrum of the input light; a second slit array including an array of three or more slits that pass light beams of wavelengths at three or more locations in the alignment of the spectra that are output from the spectrometer; and an imaging element composed of an array of pixels that receive the light beams, having passed through the second slit array, each of the light beams having three or more wavelength components. At least two pitches between slits are different in the array of the three or more slits included in the second slit array.

    PORTABLE WATER QUALITY INSTRUMENT
    47.
    发明申请
    PORTABLE WATER QUALITY INSTRUMENT 有权

    公开(公告)号：US20220146430A1

    公开(公告)日：2022-05-12

    申请号：US17527844

    申请日：2021-11-16

    Applicant: OndaVia, Inc.

    Inventor： Mark C. Peterman ,  Merwan Benhabib ,  Samuel Kleinman

    IPC: G01N21/65 ,  G01N21/47 ,  G01J3/18 ,  G01J3/44 ,  B01L3/00 ,  G01N27/447 ,  G01N30/60 ,  G01J3/02 ,  G01N21/66 ,  G01N21/63 ,  G01N21/49 ,  G01N21/68 ,  G01N33/18

    Abstract: A hand-held microfluidic testing device is provided that includes a housing having a cartridge receiving port, a cartridge for input to the cartridge receiving port having a sample input and a channel, where the channel includes a mixture of Raman-scattering nanoparticles and a calibration solution, where the calibration solution includes chemical compounds capable of interacting with a sample under test input to the cartridge and the Raman-scattering nanoparticles, and an optical detection system in the housing, where the optical detection system is capable of providing an illuminated electric field, where the illuminating electric field is capable of being used for Raman spectroscopy with the Raman-scattering nanoparticles and the calibration solution to analyze the sample under test input to the cartridge.

    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER
    48.
    发明申请
    SPECTRAL FILTER, AND IMAGE SENSOR AND ELECTRONIC DEVICE INCLUDING THE SPECTRAL FILTER 有权

    公开(公告)号：US20220128407A1

    公开(公告)日：2022-04-28

    申请号：US17506293

    申请日：2021-10-20

    Applicant: SAMSUNG ELECTRONICS CO, LTD.

    Inventor： Jaesoong LEE ,  Hyochul KIM ,  Yeonsang PARK

    IPC: G01J3/26 ,  G01J3/18 ,  G01J3/28

    Abstract: Provided is a spectral filter including a first Bragg reflective layer, a second Bragg reflective layer that is spaced apart from the first Bragg reflective layer and includes a cavity, the first resonance layer being provided between the first Bragg reflective layer and the second Bragg reflective layer, a second resonance layer including at least a portion of the first Bragg reflective layer, the second Bragg reflective layer, and the cavity, a third Bragg reflective layer, a fourth Bragg reflective layer spaced apart from the third Bragg reflective layer, wherein the second resonance layer is provided between the third Bragg reflective layer and the fourth Bragg reflective layer.

    Spectral resolution enhancement device
    49.
    发明授权
    Spectral resolution enhancement device 有权

    公开(公告)号：US11307096B2

    公开(公告)日：2022-04-19

    申请号：US17351164

    申请日：2021-06-17

    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Chen Liu

    IPC: G01J3/28 ,  G01J3/02 ,  G02B5/18 ,  G01J3/18

    Abstract: A spectral resolution enhancement device including a preliminary dispersion unit, a two-grating angular dispersion amplification unit, and a detection unit is provided. The preliminary dispersion unit is configured to receive collimated incident light and emits light of different wavelengths in the incident light at different angles. The two-grating angular dispersion amplification unit is configured to diffract the light of different wavelengths and emitted from the preliminary dispersion unit multiple times, such that angular dispersion the light of different wavelengths is enhanced, and emergent angle deviations between the light of different wavelengths are increased. The detection unit is configured to detect light of different wavelengths and emitted from the two-grating angular dispersion amplification unit. Since the emergent angle deviations of light of different wavelengths are increased, resolution of the detection unit for the light of different wavelengths is increased.

    Swept-source Raman spectroscopy systems and methods
    50.
    发明授权
    Swept-source Raman spectroscopy systems and methods 有权

    公开(公告)号：US11307092B2

    公开(公告)日：2022-04-19

    申请号：US16853811

    申请日：2020-04-21

    Applicant: Massachusetts Institute of Technology

    Inventor： Amir H. Atabaki ,  Rajeev J. Ram ,  William F. Herrington

    IPC: G01J3/44 ,  G01J3/02 ,  G01J3/10 ,  G01J3/28 ,  G01J3/18 ,  G01N21/65 ,  G01J1/42 ,  G01J3/433 ,  G02B6/293

    Abstract: In swept source Raman (SSR) spectroscopy, a swept laser beam illuminates a sample, which inelastically scatters some of the incident light. This inelastically scattered light is shifted in wavelength by an amount called the Raman shift. The Raman-shifted light can be measured with a fixed spectrally selective filter and a detector. The Raman spectrum can be obtained by sweeping the wavelength of the excitation source and, therefore, the Raman shift. The resolution of the Raman spectrum is determined by the filter bandwidth and the frequency resolution of the swept source. An SSR spectrometer can be smaller, more sensitive, and less expensive than a conventional Raman spectrometer because it uses a tunable laser and a fixed filter instead of free-space propagation for spectral separation. Its sensitivity depends on the size of the collection optics. And it can use a nonlinearly swept laser beam thanks to a wavemeter that measures the beam's absolute wavelength during Raman spectrum acquisition.

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