VARIABLE MULTIPLEXING SWITCHES FOR DETECTOR ARRAYS, SYSTEMS AND METHODS OF USE THEREOF

    公开(公告)号:US20190383725A1

    公开(公告)日:2019-12-19

    申请号:US16422630

    申请日:2019-05-24

    Abstract: Systems for differentially detecting light (e.g., in a flow stream) are described. Light detection systems according to certain embodiments include a plurality of photodetectors, an amplifier component and an electronic switch component having a plurality of switches in electrical communication with the plurality of photodetectors and the amplifier component. Systems and methods for differentially detecting light and optimizing the measurement of light emitted by a sample (e.g., in a flow stream) are also described. Kits having a photodetector array, an amplifier component and an electronic switch component are also provided.

    FLOW CYTOMETER WITH OPTICAL EQUALIZATION
    33.
    发明申请

    公开(公告)号:US20180275042A1

    公开(公告)日:2018-09-27

    申请号:US15992097

    申请日:2018-05-29

    Abstract: Aspects of the present disclosure include methods for producing an output laser beam having two or more angularly deflected laser beams (e.g., for irradiating a sample in a flow stream) with a predetermined intensity profile. Systems for practicing the subject methods having a laser, an acousto-optic device, a radiofrequency generator and a controller for adjusting the amplitude of the radiofrequency drive signals to produce an output laser beam of angularly deflected laser beams with a predetermined intensity profile are also described.

    Gain Matched Amplifiers for Light Detection
    34.
    发明公开

    公开(公告)号:US20240110859A1

    公开(公告)日:2024-04-04

    申请号:US18529323

    申请日:2023-12-05

    CPC classification number: G01N15/1434 G01R27/02 H03F3/08 G01N2015/149

    Abstract: Aspects of the present disclosure include methods for adjusting sensitivity of a photodiode in a light detection system. Methods according to certain embodiments include detecting light with a light detection system having a photodiode and an amplifier, determining responsivity of the photodiode over a plurality of wavelengths of light and adjusting one or more parameters of the amplifier in response to the responsivity of the photodiode over the plurality of wavelengths of light. Systems (e.g., particle analyzers) having a light source and a light detection system that includes a photodiode and an amplifier for practicing the subject methods are also described. Non-transitory computer readable storage medium are also provided.

    Multi-modal fluorescence imaging flow cytometry system

    公开(公告)号:US11692926B2

    公开(公告)日:2023-07-04

    申请号:US17745249

    申请日:2022-05-16

    Abstract: In one aspect, the present teachings provide a system for performing cytometry that can be operated in three operational modes. In one operational mode, a fluorescence image of a sample is obtained by exciting one or more fluorophore(s) present in the sample by an excitation beam formed as a superposition of a top-hat-shaped beam with a plurality of beams that are radiofrequency shifted relative to one another. In another operational mode, a sample can be illuminated successively over a time interval by a laser beam at a plurality of excitation frequencies in a scanning fashion. The fluorescence emission from the sample can be detected and analyzed, e.g., to generate a fluorescence image of the sample. In yet another operational mode, the system can be operated to illuminate a plurality of locations of a sample concurrently by a single excitation frequency, which can be generated, e.g., by shifting the central frequency of a laser beam by a radiofrequency. For example, a horizontal extent of the sample can be illuminated by a laser beam at a single excitation frequency. The detected fluorescence radiation can be used to analyze the fluorescence content of the sample, e.g., a cell/particle.

    Multi-Modal Fluorescence Imaging Flow Cytometry System

    公开(公告)号:US20220268687A1

    公开(公告)日:2022-08-25

    申请号:US17745249

    申请日:2022-05-16

    Abstract: In one aspect, the present teachings provide a system for performing cytometry that can be operated in three operational modes. In one operational mode, a fluorescence image of a sample is obtained by exciting one or more fluorophore(s) present in the sample by an excitation beam formed as a superposition of a top-hat-shaped beam with a plurality of beams that are radiofrequency shifted relative to one another. In another operational mode, a sample can be illuminated successively over a time interval by a laser beam at a plurality of excitation frequencies in a scanning fashion. The fluorescence emission from the sample can be detected and analyzed, e.g., to generate a fluorescence image of the sample. In yet another operational mode, the system can be operated to illuminate a plurality of locations of a sample concurrently by a single excitation frequency, which can be generated, e.g., by shifting the central frequency of a laser beam by a radiofrequency. For example, a horizontal extent of the sample can be illuminated by a laser beam at a single excitation frequency. The detected fluorescence radiation can be used to analyze the fluorescence content of the sample, e.g., a cell/particle.

    Multi-modal fluorescence imaging flow cytometry system

    公开(公告)号:US11366052B2

    公开(公告)日:2022-06-21

    申请号:US17153527

    申请日:2021-01-20

    Abstract: In one aspect, the present teachings provide a system for performing cytometry that can be operated in three operational modes. In one operational mode, a fluorescence image of a sample is obtained by exciting one or more fluorophore(s) present in the sample by an excitation beam formed as a superposition of a top-hat-shaped beam with a plurality of beams that are radiofrequency shifted relative to one another. In another operational mode, a sample can be illuminated successively over a time interval by a laser beam at a plurality of excitation frequencies in a scanning fashion. In yet another operational mode, the system can be operated to illuminate a plurality of locations of a sample concurrently by a single excitation frequency, which can be generated, e.g., by shifting the central frequency of a laser beam by a radiofrequency. The detected fluorescence radiation can be used to analyze the fluorescence content of the sample, e.g., a cell/particle.

    Parameters for use in particle discrimination

    公开(公告)号:US11268890B2

    公开(公告)日:2022-03-08

    申请号:US16817331

    申请日:2020-03-12

    Abstract: Aspects of the present disclosure include methods for characterizing particles of a sample in a flow stream. Methods according to certain embodiments include detecting light from a sample having cells in a flow stream, generating an image of an object in the flow stream in an interrogation region and determining whether the object in the flow stream is an aggregate based on the generated image. Systems having a processor with memory operably coupled to the processor having instructions stored thereon, which when executed by the processor, cause the processor to generate an image of an object in a flow stream and to determine whether the object is an aggregate are also described. Integrated circuit devices (e.g., field programmable gate arrays) having programming for practicing the subject methods are also provided.

    DUAL EXCITATION BEAMS FOR IRRADIATING A SAMPLE IN A FLOW STREAM AND METHODS FOR USING SAME

    公开(公告)号:US20210404943A1

    公开(公告)日:2021-12-30

    申请号:US17226420

    申请日:2021-04-09

    Abstract: Aspects of the disclosure include methods for generating angularly deflected laser beams for irradiating a sample in a flow stream. Methods according to certain embodiments include generating a first set of angularly deflected laser beams and a second set of angularly deflected laser beams, propagating the first set of angularly deflected laser beams along a different optical path from the second set of angularly deflected laser beams, combining the first set of angularly deflected laser beams with the second set of angularly deflected laser beams and directing the combined sets of laser beams onto a sample in a flow stream and detecting light from the sample. Systems having a laser, an acousto-optic device and an optical adjustment component configured to generate a first set of angularly deflected laser beams and a second set of angularly deflected laser beams are also described.

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