公开(公告)号：US20180164566A1

公开(公告)日：2018-06-14

申请号：US15487407

申请日：2017-04-13

Applicant: Wuhan Eoptics Technology Co., Ltd.

Inventor： Xiuguo CHEN ,  Jun CHEN ,  Chao CHEN ,  Shiyuan LIU

IPC: G02B21/00 ,  G02B5/30 ,  G02F1/00 ,  G02B26/08 ,  G02B27/10 ,  G02B6/42 ,  G02B21/36 ,  G01N21/21

CPC classification number: G02B21/0092 ,  G01N21/21 ,  G01N2201/0683 ,  G02B5/3083 ,  G02B6/42 ,  G02B21/361 ,  G02B21/367 ,  G02B26/0816 ,  G02F1/0027 ,  G02F1/0045

Abstract: A Mueller-matrix microscope, including: a polarizing unit and an analyzing unit. The polarizing unit is configured to modulate a light beam emitted from an external light source module to yield a polarized light beam, and then to project the polarized light beam on the surface of a sample to be measured. The analyzing unit is configured to analyze the polarization state of a light beam reflected from the surface of the sample, to acquire information of the sample. The analyzing unit includes a polarization state analyzer (PSA) and a backside reflection suppression (BRS) unit. The PSA unit is configured to demodulate the polarization state of the light beam; and the BRS unit is configured to suppress the backside reflections from transparent substrate.

公开(公告)号：US20180164307A1

公开(公告)日：2018-06-14

申请号：US15801823

申请日：2017-11-02

Applicant: Washington University

Inventor： Sahin Kaya Ozdemir ,  Lan Yang

IPC: G01N33/543 ,  G01N21/77 ,  G01N15/14

CPC classification number: G01N33/54373 ,  G01N15/1429 ,  G01N15/1434 ,  G01N15/1463 ,  G01N21/21 ,  G01N21/45 ,  G01N21/7746 ,  G01N2015/0038 ,  G01N2015/1454 ,  G01N2021/458 ,  G01N2201/06113 ,  G01N2201/0683 ,  G01N2201/08

Abstract: A micro-resonator and fiber taper based sensing system, which uses mode splitting or frequency shift methods and polarization measurements for particle sensing.

公开(公告)号：US09995761B2

公开(公告)日：2018-06-12

申请号：US15485261

申请日：2017-04-12

Applicant: The United States of America, as represented by the Secretary of the Army

Inventor： Bradley W. Libbey ,  James D. Perea

IPC: G01B9/02 ,  G01P3/36

CPC classification number: G01P3/36 ,  G01H9/00 ,  G01H9/002 ,  G01N21/1702 ,  G01N2201/06113 ,  G01N2201/067 ,  G01N2201/0683 ,  G01N2201/12

Abstract: A laboratory system has demonstrated the measurement of three degrees of vibrational freedom simultaneously using a single beam through heterodyne speckle imaging. The random interference pattern generated by the illumination of a rough surface with coherent light can be exploited to extract information about the surface motion. The optical speckle pattern is heterodyne mixed with a coherent reference. The recorded optical data is then processed to extract three dimensions of surface motion. Axial velocity is measured by demodulating the received time-varying intensity of high amplitude pixels. Tilt, a gradient of surface velocity, is calculated by measuring speckle translation following reconstruction of the speckle pattern from the mixed signal.

公开(公告)号：US20180080875A1

公开(公告)日：2018-03-22

申请号：US15805322

申请日：2017-11-07

Applicant: STMicroelectronics (Research &Development) Limited

Inventor： Francescopaolo Mattioli Della Rocca ,  John Kevin Moore

IPC: G01N21/64

CPC classification number: G01N21/6428 ,  G01J3/0224 ,  G01J3/2823 ,  G01J3/4406 ,  G01J2003/2806 ,  G01N21/21 ,  G01N21/6408 ,  G01N21/6445 ,  G01N21/6452 ,  G01N21/6454 ,  G01N21/6456 ,  G01N2021/217 ,  G01N2021/6439 ,  G01N2201/0683

Abstract: Photoluminescence from a sample detector is detected using an array of photo-sensitive detectors. At least one first photo-sensitive detector of the array is provided with a first type of linear polarization filter and at least one second photo-sensitive detector is provided with a second type of linear polarization filter. The first type of linear polarization filter has a plane of polarization which is at angled with respect to a plane of polarization of said second type of polarization filter.

公开(公告)号：US20170370833A1

公开(公告)日：2017-12-28

申请号：US15543752

申请日：2016-01-19

Applicant: The Research Foundation for The State University of New York

Inventor： Andrea G. MARKELZ ,  Gheorghe ACBAS ,  Katherine A. NIESSEN

IPC: G01N21/3581 ,  G01N21/23

CPC classification number: G01N21/3581 ,  G01N21/03 ,  G01N21/23 ,  G01N21/3586 ,  G01N2201/06113 ,  G01N2201/0683 ,  G02B21/0004

Abstract: An apparatus and method for Crystal Anisotropy Terahertz Microscopy (“CATM”) is provided. The apparatus includes an emitter configured to emit a THz pulse and a detector configured to detect the THz pulse after the pulse is transmitted through a sample disposed on a sample surface of the detector. A pulsed radiation generator generates a probe beam to interrogate the detector. The detector may include an electro-optical (“EO”) crystal configured to change in birefringence according to the THz pulse. The sample surface of the detector may have a dielectric coating which is transmissive to THz and reflective to the probe beam. The sample is disposed on the dielectric coating.

公开(公告)号：US09851302B2

公开(公告)日：2017-12-26

申请号：US15150559

申请日：2016-05-10

Applicant: STMicroelectronics (Research & Development) Ltd.

Inventor： Francescopaolo Mattioli Della Rocca ,  John Kevin Moore

IPC: G01N21/64

CPC classification number: G01N21/6428 ,  G01J3/0224 ,  G01J3/2823 ,  G01J3/4406 ,  G01J2003/2806 ,  G01N21/21 ,  G01N21/6408 ,  G01N21/6445 ,  G01N21/6452 ,  G01N21/6454 ,  G01N21/6456 ,  G01N2021/217 ,  G01N2021/6439 ,  G01N2201/0683

Abstract: Photoluminescence from a sample detector is detected using an array of photo-sensitive detectors. At least one first photo-sensitive detector of the array is provided with a first type of linear polarization filter and at least one second photo-sensitive detector is provided with a second type of linear polarization filter. The first type of linear polarization filter has a plane of polarization which is at angled with respect to a plane of polarization of said second type of polarization filter.

公开(公告)号：US20170336330A1

公开(公告)日：2017-11-23

申请号：US15159266

申请日：2016-05-19

Applicant: Zeta Instruments, Inc.

Inventor： Steven W. Meeks ,  Rusmin Kudinar ,  Ronny Soetarman ,  Hung P. Nguyen

IPC: G01N21/958 ,  G01N21/55 ,  G01N21/94

CPC classification number: G01N21/958 ,  G01L1/00 ,  G01N21/21 ,  G01N21/55 ,  G01N21/8806 ,  G01N21/94 ,  G01N2021/8854 ,  G01N2201/06113 ,  G01N2201/0683 ,  G01N2201/105 ,  G01N2201/1247

Abstract: A method for detecting defects includes directing a scanning beam to a location on a surface of a transparent sample, measuring top and bottom surface specular reflection intensity, and storing coordinate values of the first location and the top and bottom surface specular reflection intensity in a memory. The method may further include comparing the top surface specular reflection intensity measured at each location with a first threshold value, comparing the bottom surface specular reflection intensity measured at each location with a second threshold value, and determining if a defect is present at each location and on which surface the defect is present. The method may further include comparing the top surface specular reflection intensity measured at each location with a first intensity range, comparing the bottom surface specular reflection intensity measured at each location with a second intensity range, and determining on which surface the defect is present.

公开(公告)号：US20170307517A1

公开(公告)日：2017-10-26

申请号：US15612564

申请日：2017-06-02

Applicant: Hinds Instruments, Inc.

Inventor： John Freudenthal ,  Andy Leadbetter ,  Baoliang Wang

IPC: G01N21/23 ,  G01N21/21 ,  G01J4/00

CPC classification number: G01N21/23 ,  G01J4/00 ,  G01N21/21 ,  G01N2201/0621 ,  G01N2201/0683

Abstract: This disclosure is generally directed to systems for imaging polarization properties of optical-material samples. As one aspect, there is provided a system for precise, simultaneous imaging of both the in-plane and out-of-plane birefringence properties of sample material over a wide range of incidence angles. The spatially resolved imaging approach described here is amenable to determination of a wide range of polarimetric properties, in addition to the in-plane and out-of-plane birefringence measure discussed as a preferred embodiment.

公开(公告)号：US20170299583A1

公开(公告)日：2017-10-19

申请号：US15487291

申请日：2017-04-13

Applicant: Pathogen Systems, Inc. dba Crystal Diagnostics Ltd

Inventor： Luana Tortora

IPC: G01N33/543 ,  G01N21/21 ,  G01N21/59 ,  G01N21/03 ,  G01N33/569

CPC classification number: G01N33/54366 ,  G01N21/03 ,  G01N21/21 ,  G01N21/23 ,  G01N21/59 ,  G01N33/54313 ,  G01N33/54326 ,  G01N33/54373 ,  G01N33/54393 ,  G01N33/56916 ,  G01N2201/0683 ,  G01N2333/245

Abstract: A novel detection system and method is presented, where a two-bead receptor method is used for capturing pathogens, with one type of bead being magnetic and having a size of 3 microns or smaller, and the other type being polymeric and having a size of 3 microns or larger. The first type is used to concentrate a pathogen; the latter is used to create a detectable signal. Fast sensitive detection is achieved by collecting the optical signal created by the distortion of a homeotropically aligned chromonic azo dye in the presence of captured pathogens.

公开(公告)号：US09746417B2

公开(公告)日：2017-08-29

申请号：US15243233

申请日：2016-08-22

Applicant: DEKA Products Limited Partnership

Inventor： Jacob W. Scarpaci

IPC: G01J4/00 ,  G01N21/21

CPC classification number: G01N21/21 ,  G01N2201/0683

Abstract: An apparatus and method for determining the concentration of chiral molecules in a fluid includes a first polarizer configure to polarize light in substantially a first plane to provide initially polarized light. A second polarizer is capable of polarizing the initially polarized light in a plurality of planes, at least one of the plurality of planes being different from the first plane, to provide subsequently polarized light. One or more receivers are included for measuring an intensity of the subsequently polarized light in one or more of the plurality of planes.