中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

202 records (took 0.031 seconds)

    GAS VISUALIZING METHODS AND SYSTEMS WITH BIREFRINGENT POLARIZATION INTERFEROMETER
    112.
    发明申请
    GAS VISUALIZING METHODS AND SYSTEMS WITH BIREFRINGENT POLARIZATION INTERFEROMETER 审中-公开

    公开(公告)号：US20180106674A1

    公开(公告)日：2018-04-19

    申请号：US15833861

    申请日：2017-12-06

    Applicant: FLIR Systems AB

    Inventor： Jonas Sandsten ,  Joakim Sjunnebo

    IPC: G01J3/28 ,  G01J3/02 ,  G01B9/02

    CPC classification number: G01J3/2823 ,  G01B9/02001 ,  G01B9/02041 ,  G01B9/02089 ,  G01J3/0208 ,  G01J3/4531 ,  G01J9/0215 ,  G01J2003/2826

    Abstract: Systems and methods disclosed herein provide for gas imaging. A gas imaging system comprises a lenslet array configured to receive thermal radiation from a scene and transmit a plurality of substantially identical sub-images of the thermal radiation; a birefringent polarization interferometer configured to generate an optical path difference for each ray of the plurality of sub-images based on a respective position of each ray entering the BPI, the optical path differences combining to form an interference fringe pattern; and an infrared focal plane array configured to capture a thermal image of the plurality of sub-images modulated by the interference fringe pattern due to the optical path differences through the BPI. The captured thermal image may represent a plurality of interferogram sample points of the thermal radiation from the scene, and may be used to construct a plurality of hyperspectral images of the thermal radiation from the scene.

    Computationally-Assisted Multi-Heterodyne Spectroscopy
    116.
    发明申请
    Computationally-Assisted Multi-Heterodyne Spectroscopy 审中-公开

    公开(公告)号：US20170138791A1

    公开(公告)日：2017-05-18

    申请号：US15259687

    申请日：2016-09-08

    Applicant: Massachusetts Institute of Technology

    Inventor： David Burghoff ,  Yang Yang ,  Qing Hu

    IPC: G01J3/28 ,  G01J3/10

    CPC classification number: G01J3/28 ,  G01J3/10 ,  G01J3/108 ,  G01J3/2803 ,  G01J3/42 ,  G01J3/4531 ,  G01J9/04 ,  G01J2003/102 ,  G01J2003/284

    Abstract: According to one aspect, a multi-heterodyne system is disclosed, which comprises a first laser source for generating multi-mode radiation having a frequency spectrum characterized by a first plurality of phase coherent frequencies, and a second laser source for generating multi-mode radiation having a frequency spectrum characterized by a second plurality of phase coherent frequencies. The system further comprises at least one detector for detecting a combination of the multi-mode radiation generated by the first and second laser sources so as to provide a multi-heterodyne signal having a frequency spectrum characterized by a plurality of beat frequencies, each beat frequency corresponding to a pairwise difference in the first and second plurality of phase coherent frequencies. The system further comprises an analyzer for receiving said multi-heterodyne signal and configured to employ a predictive model of the multi-heterodyne signal to provide estimates of any of phase error and timing error associated with the beat frequencies.

    Snapshot spatial heterodyne imaging polarimetry
    117.
    发明授权
    Snapshot spatial heterodyne imaging polarimetry 有权
    快照空间外差成像偏振法

    公开(公告)号：US09442015B2

    公开(公告)日：2016-09-13

    申请号：US14091190

    申请日：2013-11-26

    Applicant: Michael W. Kudenov ,  Michael J. Escuti

    Inventor： Michael W. Kudenov ,  Michael J. Escuti

    IPC: G01J4/00 ,  G02F1/01 ,  G02F2/00 ,  G01J3/28 ,  G01J3/447 ,  G01J3/453 ,  G01J3/02 ,  G01J4/04 ,  G01J3/45

    CPC classification number: G01J4/00 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/2803 ,  G01J3/447 ,  G01J3/4531 ,  G01J4/04 ,  G01J2003/452 ,  G02F1/01 ,  G02F2/00

    Abstract: Polarization based channeled images are optically demodulated to produce directly viewable images. A channeled image flux is converted to an unpolarized flux by a phosphor or other sensor, and the resulting converted flux is demodulated by modulating at a spatial frequency corresponding to a modulating frequency of the channeled image flux. After modulation, the converted flux is spatially filtered to remove or attenuate portions associated with the modulation frequency and harmonics thereof. The resulting baseband flux is then imaged by direct viewing, projection, or using an image sensor and a display.

    Abstract translation: 基于偏振的信道图像被光学解调以产生直接可见的图像。 通过荧光体或其它传感器将通道图像通量转换成非极化通量，并且通过在对应于通道图像通量的调制频率的空间频率下进行调制来解调所得到的转换通量。 在调制之后，转换的通量被空间滤波以去除或衰减与其调制频率和谐波相关的部分。 然后通过直接观看，投影或使用图像传感器和显示器对所得到的基带通量进行成像。

    SYSTEMS AND METHODS FOR DEEP SPECTROSCOPIC IMAGING OF BIOLOGICAL SAMPLES
    118.
    发明申请
    SYSTEMS AND METHODS FOR DEEP SPECTROSCOPIC IMAGING OF BIOLOGICAL SAMPLES 有权
    用于生物样品深度光谱成像的系统和方法

    公开(公告)号：US20150285685A1

    公开(公告)日：2015-10-08

    申请号：US14683066

    申请日：2015-04-09

    Applicant: Duke University

    Inventor： Adam Wax ,  Howard Levinson ,  William J. Brown ,  Thomas Matthews ,  Manuel Medina

    IPC: G01J3/28 ,  G01J3/453 ,  G01N21/25 ,  G01B9/02

    CPC classification number: G01J3/2823 ,  A61B5/445 ,  G01B9/02044 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/453 ,  G01J3/4531 ,  G01N21/45 ,  G01N21/4795

    Abstract: Disclosed herein are systems and methods for deep spectroscopic imaging of a biological sample. In an aspect, a system includes a broad bandwidth light source configured to generate an illumination beam, an interferometer, and a spectrometer. The interferometer includes a first beam splitter configured to split the illumination beam into an incident beam and a reference beam; an optical lens directs the incident beam onto a biological sample at a predefined offset from corresponding optical axis, and receive a beam scattered from the biological sample. The beams are configured to intersect with each other within a focal zone of the optical lens. Photons of the incident beam undergo multiple forward scattering within the biological sample. A second beam splitter configured to receive and superimpose the scattered and reference beams, to generate an interference beam. The spectrometer uses a spectral domain detection technique to assess tissue properties of the biological sample.

    Abstract translation: 本文公开了用于生物样品的深度光谱成像的系统和方法。 在一方面，系统包括配置成产生照明光束的宽带宽光源，干涉仪和光谱仪。 所述干涉仪包括：第一分束器，被配置为将照明光束分成入射光束和参考光束; 光学透镜将入射光束以预定偏移量从对应的光轴引导到生物样品上，并接收从生物样品散射的光束。 梁被构造成在光学透镜的聚焦区域内彼此相交。 入射光束的光子在生物样品内经历多次前向散射。 第二分束器，被配置为接收和叠加散射参考光束并产生干涉光束。 光谱仪使用光谱域检测技术来评估生物样品的组织性质。

    Terahertz frequency domain spectrometer with heterodyne downconversion
    119.
    发明授权
    Terahertz frequency domain spectrometer with heterodyne downconversion 有权
    太赫兹频域光谱仪与外差下变频

    公开(公告)号：US09052238B2

    公开(公告)日：2015-06-09

    申请号：US14033114

    申请日：2013-09-20

    Applicant: Ronald T. Logan, Jr. ,  Joseph R. Demers

    Inventor： Ronald T. Logan, Jr. ,  Joseph R. Demers

    IPC: G01N21/35 ,  G01J3/427 ,  G01J3/10 ,  G01J3/42 ,  G01J3/453 ,  G01N21/3581 ,  G01N21/39

    CPC classification number: G01J3/427 ,  A61B5/0507 ,  G01J3/10 ,  G01J3/42 ,  G01J3/4531 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/39

    Abstract: An apparatus for analyzing, identifying or imaging an target including first and second laser beams coupled to a pair of photoconductive switches to produce CW signals in one or more bands in a range of frequencies greater than 100 GHz focused on and transmitted through or reflected from the target; and a detector for acquiring spectral information from signals received from the target and using a multi-spectral heterodyne process to generate an electrical signal representative of some characteristics of the target. The lasers are tuned to different frequencies and a frequency shifter in the path of one laser beam allows the terahertz beam to be finely adjusted in one or more selected frequency bands.

    Abstract translation: 一种用于分析，识别或成像目标的装置，包括耦合到一对光电导开关的第一和第二激光束，以在大于100GHz的频率的范围内的一个或多个频带中产生CW信号，该信号集中于并经由 目标; 以及检测器，用于从从目标接收的信号中获取光谱信息，并使用多光谱外差处理产生表示目标的某些特性的电信号。 将激光器调谐到不同的频率，并且在一个激光束的路径中的频移器允许在一个或多个所选频带中微调太赫兹波束。

    SNAPSHOT SPATIAL HETERODYNE IMAGING POLARIMETRY
    120.
    发明申请
    SNAPSHOT SPATIAL HETERODYNE IMAGING POLARIMETRY 有权
    SNAPSHOT空间异位成像极化

    公开(公告)号：US20140078298A1

    公开(公告)日：2014-03-20

    申请号：US14091190

    申请日：2013-11-26

    Applicant: Michael W. Kudenov ,  Michael J. Escuti

    Inventor： Michael W. Kudenov ,  Michael J. Escuti

    IPC: G01J4/00 ,  G02F2/00 ,  G02F1/01

    CPC classification number: G01J4/00 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/2803 ,  G01J3/447 ,  G01J3/4531 ,  G01J4/04 ,  G01J2003/452 ,  G02F1/01 ,  G02F2/00

    Abstract: Polarization based channeled images are optically demodulated to produce directly viewable images. A channeled image flux is converted to an unpolarized flux by a phosphor or other sensor, and the resulting converted flux is demodulated by modulating at a spatial frequency corresponding to a modulating frequency of the channeled image flux. After modulation, the converted flux is spatially filtered to remove or attenuate portions associated with the modulation frequency and harmonics thereof. The resulting baseband flux is then imaged by direct viewing, projection, or using an image sensor and a display.

    Abstract translation: 基于偏振的信道图像被光学解调以产生直接可见的图像。 通过荧光体或其它传感器将通道图像通量转换成非极化通量，并且通过在对应于通道图像通量的调制频率的空间频率下进行调制来解调所得到的转换通量。 在调制之后，转换的通量被空间滤波以去除或衰减与其调制频率和谐波相关的部分。 然后通过直接观看，投影或使用图像传感器和显示器对所得到的基带通量进行成像。

Patent Agency Ranking