利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

25 条记录 (耗时 0.022 秒)

    System and method for imaging with pinhole arrays
    1.
    发明授权
    System and method for imaging with pinhole arrays 有权
    用针孔阵列成像的系统和方法

    公开(公告)号：US09344700B2

    公开(公告)日：2016-05-17

    申请号：US14755104

    申请日：2015-06-30

    申请人： Bar Ilan University ,  University of Connecticut

    发明人： Zeev Zalevsky ,  Moshe Arie Ariel Schwarz ,  Amir Shemer ,  Bahram Javidi ,  Jingang Wang

    IPC分类号： H04N13/00 ,  G06T5/00 ,  G02B5/20 ,  G02B27/22 ,  G02B26/06 ,  G02B27/46 ,  H04N13/02 ,  G21K1/04

    CPC分类号： H04N13/133 ,  G01T1/295 ,  G02B5/201 ,  G02B26/06 ,  G02B27/2264 ,  G02B27/46 ,  G02B2207/129 ,  G06T5/001 ,  G06T5/006 ,  G21K1/04 ,  H04N13/122 ,  H04N13/211 ,  H04N13/218 ,  H04N2013/0081 ,  H04N2013/0092

    摘要： An imaging system is provided, configured for providing three-dimensional data of a region of interest. The system comprising: an optical unit and a control unit. The optical unit comprises a radiation collection unit and a detection unit. The radiation collection unit comprises at least two mask arrangement defining at least two radiation collection regions respectively, the mask arrangements are configured to sequentially apply a plurality of a predetermined number of spatial filtering patterns formed by a predetermined arrangement of apertures applied on radiation collected thereby generating at least two elemental image data pieces corresponding to the collected radiation from said at least two collection regions. The control unit comprising is configured for receiving and processing said at least two elemental image data pieces and determining a plurality of at least two restored elemental images respectively being together indicative of a three dimensional arrangement of the region being imaged.

    摘要翻译： 提供了一种成像系统，被配置为提供感兴趣区域的三维数据。 该系统包括：光学单元和控制单元。 光学单元包括一个辐射收集单元和一个检测单元。 所述辐射收集单元包括分别限定至少两个辐射收集区域的至少两个掩模装置，所述掩模装置被配置为顺序地施加多个预定数量的空间滤波图案，所述预定数量的空间滤波图案由施加在所收集的辐射上的预定布置的孔径形成， 至少两个元素图像数据片段对应于来自所述至少两个收集区域的所收集的辐射。 控制单元包括被配置用于接收和处理所述至少两个元素图像数据片段，并且确定分别一起指示被成像区域的三维排列的多个至少两个恢复的元素图像。

    IMAGING SYSTEM AND METHOD USING MULTICORE FIBER
    3.
    发明申请
    IMAGING SYSTEM AND METHOD USING MULTICORE FIBER 有权

    公开(公告)号：US20220125286A1

    公开(公告)日：2022-04-28

    申请号：US17569555

    申请日：2022-01-06

    申请人： BAR ILAN UNIVERSITY

    发明人： Zeev Zalevsky ,  Asaf Shahmoon ,  Hamutal Slovin

    IPC分类号： A61B1/07 ,  A61B1/00 ,  A61B1/04

    摘要： The present invention provides a system for imaging an object comprising: an optical imaging unit for imaging an object on a detection array, the optical imaging unit defining an optical axis and comprising a multicore fiber configured to collect light from the object at an input edge of the multicore fiber and transfer collected light to an output edge of the multicore fiber; a displacing unit configured to shift the input edge of the multicore fiber relatively to the object in a plane substantially perpendicular to the optical axis to obtain a set of shifted images of the object; and an operating unit configured to operate the displacing unit by setting a shifting amplitude to either a first amplitude inferior or equal to the diameter of a core of the multicore fiber or a second amplitude superior or equal to the diameter of the multicore fiber.

    Ultrahigh resolution photonic spectral processor
    4.
    发明授权
    Ultrahigh resolution photonic spectral processor 有权

    公开(公告)号：US10914633B2

    公开(公告)日：2021-02-09

    申请号：US16294113

    申请日：2019-03-06

    申请人： B. G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY ,  BAR ILAN UNIVERSITY

    发明人： Dan Sadot ,  Zeev Zalevsky ,  Tomer Yeminy ,  Sagie Asraf

    IPC分类号： G01J5/02 ,  G01J3/28 ,  G02B5/18 ,  H04B10/67

    摘要： Disclosed are a method for achieving ultrahigh spectral resolution and a photonic spectral processor, which is designed to carry out the method. The disclosed photonic spectral processor overcomes the current 0.8 GHz spectral resolution limitation. The new spectral processor uses a Fabry-Perot interferometer array located before the dispersive element of the system, thus significantly improving the spectral separation resolution, which is now limited by the full width at half maximum of the Fabry-Perot interferometer rather than the spectral resolution of the dispersive element spectral as is the current situation. A proof of concept experiment utilizing two Fabry-Perot interferometers and a diffractive optical grating with spectral resolution of 6.45 GHz achieving high spectral resolution of 577 MHz is described.

    SPECTRAL AND TEMPORAL STEALTHY FIBER OPTIC COMMUNICATION USING SAMPLING AND PHASE ENCODING DETECTION SYSTEM
    5.
    发明申请
    SPECTRAL AND TEMPORAL STEALTHY FIBER OPTIC COMMUNICATION USING SAMPLING AND PHASE ENCODING DETECTION SYSTEM 有权
    使用采样和相位编码检测系统的光谱和时间光纤通信

    公开(公告)号：US20140146969A1

    公开(公告)日：2014-05-29

    申请号：US14232655

    申请日：2012-07-17

    申请人： BAR-ILAN UNIVERSITY ,  BEN-GURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY

    发明人： Dan Sadot ,  Zeev Zalevsky ,  Tomer Yeminy

    IPC分类号： H04L9/08 ,  H04B10/85

    CPC分类号： H04L9/0852 ,  H04B10/85 ,  H04K1/006 ,  H04K1/04

    摘要： A method for providing spectral and temporal stealthy information transmitted over an optical communication channel, according to which, at the transmitting side, the power spectral density of a pulse sequence bearing the information is reduced by encrypting the temporal phase of the pulse sequence. The power of the pulse sequence is spread in the frequency domain, to be below the noise level, by sampling the pulse sequence. Spectral phase encoding is used to temporally spread the pulse sequence and to prevent coherent addition of its spectral replicas in frequency domain. The resulting signal, encrypted both in time and frequency domains, is then transmitted. Spectral phase decoding is performed at the receiving side by performing coherent detection and folding all the spectral replicas of the transmitted signal to the baseband by means of sampling. The temporal phase of the signal is decrypted and the information which is delivered by the pulse sequence is decoded.

    摘要翻译： 一种用于提供通过光通信信道发送的频谱和时间隐形信息的方法，根据该方法，在发送侧，通过加密脉冲序列的时间相位来减少携带信息的脉冲序列的功率谱密度。 通过采样脉冲序列，脉冲序列的功率在频域中扩展，低于噪声电平。 频谱相位编码用于时间扩展脉冲序列，并防止其频域中的频谱复制的相干相加。 随后发送在时域和频域加密的结果信号。 通过执行相干检测并通过采样将发射信号的所有光谱复制品折叠到基带，在接收侧执行光谱相位解码。 信号的时间相位被解密，并且由脉冲序列传送的信息被解码。

    System and method for imaging via scattering medium
    6.
    发明授权
    System and method for imaging via scattering medium 有权

    公开(公告)号：US11867625B2

    公开(公告)日：2024-01-09

    申请号：US17427800

    申请日：2020-01-30

    申请人： BAR ILAN UNIVERSITY

    发明人： Zeev Zalevsky

    IPC分类号： G01N21/47

    CPC分类号： G01N21/47

    摘要： A system for use in imaging through diffusive media is presented. The system comprising: an imaging unit comprising light source unit comprising light source(s) providing coherent illumination with selected wavelength range, and a spatial light modulator configured for selectively varying spatial pattern of wavefront of light generated by the light source(s); a collection unit comprising detector array(s) and located next to said light source unit for collecting light reflected from a sample illuminated by said light source unit. And a control system comprising processing unit(s) and connected to said light source unit and said collection unit, said control system is configured for selectively varying spatial pattern of wavefront of light generated by the light source(s) in accordance with spatial pattern of light collected by said detector array(s) of the collection unit to satisfy a reflectance condition indicative of relation between wavefront spatial pattern and collected light spatial pattern.

    ULTRAHIGH RESOLUTION PHOTONIC SPECTRAL PROCESSOR
    7.
    发明申请
    ULTRAHIGH RESOLUTION PHOTONIC SPECTRAL PROCESSOR 审中-公开

    公开(公告)号：US20190277694A1

    公开(公告)日：2019-09-12

    申请号：US16294113

    申请日：2019-03-06

    申请人： B. G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY ,  BAR ILAN UNIVERSITY

    发明人： Dan Sadot ,  Zeev Zalevsky ,  Tomer Yeminy ,  Sagie Asraf

    IPC分类号： G01J3/28 ,  G02B5/18 ,  H04B10/67

    摘要： Disclosed are a method for achieving ultrahigh spectral resolution and a photonic spectral processor, which is designed to carry out the method. The disclosed photonic spectral processor overcomes the current 0.8 GHz spectral resolution limitation. The new spectral processor uses a Fabry-Perot interferometer array located before the dispersive element of the system, thus significantly improving the spectral separation resolution, which is now limited by the full width at half maximum of the Fabry-Perot interferometer rather than the spectral resolution of the dispersive element spectral as is the current situation. A proof of concept experiment utilizing two Fabry-Perot interferometers and a diffractive optical grating with spectral resolution of 6.45 GHz achieving high spectral resolution of 577 MHz is described.