System and method for monitoring a sample

    公开(公告)号:US11202040B2

    公开(公告)日:2021-12-14

    申请号:US17050213

    申请日:2019-04-08

    Abstract: A system and technique are described, for use in optical monitoring of objects. The system comprising: a collection unit comprising at least one optical arrangement and at least one detector array arranged for defocused collection of light returning from a selected region on the object; and image data collection circuitry configured for receiving electronic signals associated with data piece collected by pixels of the at least one detector array and for generating output data indicative of correlation function between image frames collected by the detector array at two or more different temporal instances. The technique thereby enables determining of correlation between image data pieces with reduced computational complexity.

    Sample inspection utilizing time modulated illumination

    公开(公告)号:US10931881B2

    公开(公告)日:2021-02-23

    申请号:US16575944

    申请日:2019-09-19

    Abstract: A system and corresponding method are presented. The system includes an illumination unit including at least one light source configured for emitting coherent illumination of one or more selected wavelength ranges having selected illumination modulation pattern and for directing the coherent illumination onto one or more selected inspection regions; and a collection unit including at least one detector array and imaging optical arrangement configured for collecting interacting light from the one or more selected inspection regions and for generating corresponding one or more sequences of image data pieces at selected sampling rate. The image data pieces are indicative of secondary speckle patterns formed in collected interacting light. The illumination modulation pattern is selected for increasing temporal bandwidth collection of speckle patterns associated with temporal shifts in the one or more inspection regions.

    SAMPLE INSPECTION UTILIZING TIME MODULATED ILLUMINATION

    公开(公告)号:US20200099839A1

    公开(公告)日:2020-03-26

    申请号:US16575944

    申请日:2019-09-19

    Abstract: A system and corresponding method are presented. the system comprises: an illumination unit comprising at least one light source configured for emitting coherent illumination of one or more selected wavelength ranges having selected illumination modulation pattern and for directing said illumination onto one or more selected inspection regions; and a collection unit comprising at least one detector array and imaging optical arrangement configured for collecting interacting light from the one or more selected inspection regions and for generating corresponding one or more sequences of image data pieces at selected sampling rate. The image data pieces being indicative of secondary speckle patterns formed in collected interacting light. The illumination modulation pattern is selected for increasing temporal bandwidth collection of speckle patterns associated with temporal shifts in said one or more inspection regions.

    System and method for use in remote sensing

    公开(公告)号:US11085753B2

    公开(公告)日:2021-08-10

    申请号:US16484910

    申请日:2018-02-15

    Abstract: A system for use in monitoring parameters of an object includes an illumination unit configured for providing coherent illumination of a predetermined wavelength range and for directing the coherent illumination onto an inspection region of the object, and a collection unit comprising a lens arrangement and a detector array and configured for collecting light returning from the inspection region and for generating one or more image data pieces associated with speckle patterns generated at an intermediate plane between the inspection region and the detector array. The detector array is configured as a rolling shutter type detector unit and the collection unit comprises at least one light splitting element configured for splitting collected light to thereby form a plurality of image replications corresponding to the speckle patterns on the detector array.

    SYSTEM AND METHOD FOR MONITORING A SAMPLE WITH AT LEAST TWO WAVELENGTHS

    公开(公告)号:US20190385281A1

    公开(公告)日:2019-12-19

    申请号:US16484933

    申请日:2018-02-14

    Abstract: A system and technique for monitoring of one or more parameters of a sample are presented. The system comprising: an illumination unit configured for providing coherent illumination of at least two wavelength ranges and for directing said coherent illumination onto an inspection region, and a collection unit configured for collecting light returning from the inspection region and generate one or more image data pieces associated with speckle pattern generated at an intermediate plane between said inspection region and said collection unit. The use of illumination having at least two different wavelength ranges provides generation of speckles associated with mutual- interference of light of the different wavelength ranges, enabling higher efficiency and stability with respect to movement of the inspection region.

    SYSTEM AND METHOD FOR MONITORING PERIODIC SIGNALS

    公开(公告)号:US20190274560A1

    公开(公告)日:2019-09-12

    申请号:US16347951

    申请日:2017-11-07

    Abstract: A method and system for use in detection of a periodic signal are described. The method comprising: providing data about periodicity of the periodic signal; sampling said periodic signal at a sampling rate along a plurality of periods of said signal, said sampling rate being selected as having temporal location of at least one sampling event along a corresponding period thereof varies for each period for a desired number of the periods; arranging sampled data pieces in accordance with sample time thereof with respect to time within a period of said periodic signal; and reconstructing a profile of said periodic signal from said plurality of periods being sampled at a desired resolution being greater than resolution associated with said sampling rate. The variation in temporal location of sampling event may be provided by proper selection of sampling rate, or by varying time of sampling rate in accordance with the period of the periodic signal.

    Vibration sensing system with wavelength encoding

    公开(公告)号:US10989517B2

    公开(公告)日:2021-04-27

    申请号:US16471922

    申请日:2017-11-21

    Abstract: A system for use in inspection of a sample is described, the system comprises: an illumination unit configured to provide coherent illumination comprising a plurality of at least two wavelengths and direct said coherent illumination onto an inspection region of a sample; and a collection unit comprising at least one detector array and configured for collecting light returning from said inspection region and generate data indicative of speckle patterns in said plurality of at least two wavelengths at a predetermined sampling rate, wherein said illumination unit is configured for directing light components of said at least two wavelengths toward corresponding two or more segments of said inspection region, and wherein said data indicative of speckle patterns corresponding with said two or more segments.

    Optical transforming and modulated interference pattern of a moving object

    公开(公告)号:US10883818B2

    公开(公告)日:2021-01-05

    申请号:US16078810

    申请日:2017-02-07

    Abstract: The invention relates to a method and system for monitoring at least one parameter of an object. There is provided an imaging system for monitoring at least one parameter of movement of a moving object, the system comprises at least one imaging unit comprising an optical transformer configured and operable for applying spatial image space transformation of at least one parameter of movement into geometric relation, by translating different components of six degrees of freedom of movement in a three-dimensional space into a lateral translation; wherein the imaging unit is configured and operable for imaging the moving object on an image plane and generating image data indicative of the moving object in an x-y plane; the imaging system generating motion data indicative of the six degrees of freedom of movement.

    SYSTEM AND METHOD FOR USE IN REMOTE SENSING
    10.
    发明申请

    公开(公告)号:US20200072597A1

    公开(公告)日:2020-03-05

    申请号:US16484910

    申请日:2018-02-15

    Abstract: A system for use in monitoring parameters of an object is described. The system comprising an illumination unit configured for providing coherent illumination of a predetermined wavelength range and for directing said coherent illumination onto an inspection region of the object, and a collection unit comprising a lens arrangement and a detector array and configured for collecting light returning from the inspection region and for generating one or more image data pieces associated with speckle patterns generated at an intermediate plane between the inspection region and said detector array. The detector array is configured as a rolling shutter type detector unit and said collection unit comprises at least one light splitting element configured for splitting collected light to thereby form a plurality of image replications corresponding to said speckle patterns on said detector array.

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