公开(公告)号：US20170336262A1

公开(公告)日：2017-11-23

申请号：US15524488

申请日：2015-11-04

Applicant: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： TSUNEYUKI OZAKI ,  GARGI SHARMA ,  KANWARPAL SINGH

IPC: G01J3/42 ,  G01J3/02

CPC classification number: G01J3/42 ,  G01J3/0218 ,  G01J3/0224

Abstract: A method for characterizing terahertz radiation using spectral domain interferometry, comprising overlapping a pump beam and a terahertz beam in a detecting crystal; obtaining two probe pulses by propagating the probe beam into a polarization maintaining single-mode optical fiber after the detecting crystal; and measuring a change in the optical path difference between the two probe pulses. The system comprises a detection crystal, where a terahertz pulse and a probe beam are made to overlap; a polarization-maintaining optical fiber propagating the probe beam after the detection crystal and outputting two probe pulses; and a spectrometer where the two probe pulses interfere.

公开(公告)号：US09791315B2

公开(公告)日：2017-10-17

申请号：US14761328

申请日：2014-01-16

Applicant: UNIVERSITEIT LEIDEN

Inventor： Christoph Ulrich Keller ,  Frans Snik

IPC: G01J3/02 ,  G01J4/04 ,  G02F1/01 ,  G01J1/42 ,  G01J1/04 ,  G01J3/14 ,  G01J4/00

CPC classification number: G01J3/0224 ,  G01J1/0425 ,  G01J1/4228 ,  G01J3/0218 ,  G01J3/14 ,  G01J4/00 ,  G01J4/04 ,  G02F1/0136

Abstract: A polarimetry apparatus comprising a plurality of flexible light conduits each having first and second ends, and a respective polarization modulator associated with each light conduit, wherein each light conduit is configured to receive incident light from a different predetermined region in space via the first end, and deliver said light to a detector unit via the second end, and wherein the polarization modulator is configured to modulate the polarization of the light to enable a partial or complete polarization state of the incident light to be determined by the detector unit for each light conduit.

公开(公告)号：US20170241766A1

公开(公告)日：2017-08-24

申请号：US15502147

申请日：2015-08-07

Applicant: ADOM, ADVANCED OPTICAL TECHNOLOGIES LTD.

Inventor： Yoel Arieli ,  Yoel Cohen

IPC: G01B9/02 ,  G01N21/31

CPC classification number: G01B9/02091 ,  G01B9/02019 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/447 ,  G01J3/453 ,  G01N21/31 ,  G01N2201/0636 ,  G01N2201/0683

Abstract: In a system for analyzing optical properties of an object (350) a point source of light (100) composed of multiple spectral bands each having a respective amplitude, phase and polarization is converted by first optics (120, 150) into a line light source to illuminate an object line on the object. A beam splitter (200) splits the light exiting the first optics and directs a first portion of light on to the object (350) as an illuminated line and a second portion of the light on to a reference mirror (450). Second optics (500) collects respective first and second lines of light reflected by the object and mirror of and collinearly images the reflected lines of light as an image line on to an imaging spectrometer (550) wherein mutual interference allows determination of the optical properties of the object at each point along the object line.

公开(公告)号：US09733125B2

公开(公告)日：2017-08-15

申请号：US14431080

申请日：2013-09-25

Applicant: The Penn State Research Foundation ,  Washington University

Inventor： Zhiwen Liu ,  Lan Yang ,  Perry Edwards ,  Corey Janisch ,  Bo Peng ,  Sahin Ozdemir

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/26 ,  G01J3/28 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01J3/44 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/10 ,  G01J3/26 ,  G01J3/2823 ,  G01N21/65

Abstract: Embodiments of the invention provide Raman spectroscopy methods and devices that exploit high quality factor (Q) resonators to enhance Raman signal by several orders of magnitude over the signal typically expected for Raman methods. Embodiments typically include one or more resonators, typically microtoroid microresonators. Embodiments also take advantage of Rayleigh scattering using these microresonators. Embodiments may be particularly useful for non-labeled nanoparticle sensing.

公开(公告)号：US09733124B2

公开(公告)日：2017-08-15

申请号：US14250589

申请日：2014-04-11

Applicant: BMG LABTECH, GmbH

Inventor： Markus Schappacher

IPC: H01J5/16 ,  G01J3/02 ,  G01J3/12 ,  G01J3/26 ,  G01N21/25 ,  G01N21/64

CPC classification number: G01J3/0224 ,  G01J3/12 ,  G01J3/26 ,  G01J2003/1213 ,  G01J2003/1221 ,  G01J2003/1234 ,  G01N21/253 ,  G01N21/6452 ,  G01N2021/6471

Abstract: A microplate reader includes a pair of linear variable filters (LVFs) that together form a wavelength selector. Movement of one or both of the LVFs enables selection of the desired center wavelength and/or passband used to analyze a sample on a microplate inserted into the microplate reader. The microplate reader may also include a similar second wavelength selector. The LVFs are located on movable frames, with each frame also advantageously including least one of an aperture, a fixed optical filter, and an optical polarization filter. In some cases, different types of measurements may be taken without changing the geometry of the optical path between the wavelength selectors. The microplate reader may additionally use a LVF to form a continuously adjustable dichroic for sample analysis.

公开(公告)号：US09719927B2

公开(公告)日：2017-08-01

申请号：US15311311

申请日：2015-05-08

Applicant: TOHOKU UNIVERSITY ,  NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

Inventor： Akihide Hibara ,  Manabu Tokeshi ,  Osamu Wakao

IPC: G01N21/64 ,  G02F1/13 ,  G01N33/542

CPC classification number: G01N21/6445 ,  G01J3/0224 ,  G01J4/00 ,  G01N21/64 ,  G01N21/6456 ,  G01N33/542 ,  G01N2201/0675 ,  G01N2201/0683 ,  G02F1/13

Abstract: An excitation light source emits excitation light to a target sample. An image sensor includes pixels arranged one-dimensionally or two-dimensionally, and receives measurement light from the sample according to the excitation light. A polarization selector arranged between the sample and image sensor includes pixels arranged one-dimensionally or two-dimensionally. Each pixel receives a corresponding portion of the measurement light, selects light having a polarization direction that corresponds to a driving signal applied to the pixels, and supplies this light to the image sensor. A measurement control unit supplies the cyclic driving signal having a first period T1, and acquires data I1, I2, I3, and I4 from each pixel of the image sensor for each exposure time segment T2=T1/4 obtained by dividing the first period T1 by 4.

公开(公告)号：US09709441B2

公开(公告)日：2017-07-18

申请号：US14649065

申请日：2013-11-29

Applicant: HORIBA JOBIN YVON SAS

Inventor： Olivier Acher ,  Simon Richard

IPC: G01J3/447 ,  G01J3/02

CPC classification number: G01J3/0224 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/1804 ,  G01J3/447 ,  G01J2003/1208

Abstract: A spectrometer (100) for analyzing the spectrum of an upstream light beam (1) includes an entrance slit (101) and angular dispersing elements (130). The angular dispersing elements include at least one polarization-dependent diffraction grating that is suitable for, at the plurality of wavelengths (1, 2, 3), diffracting a corrected light beam (20) into diffracted light beams (31, 32, 33) in a given particular diffraction order of the polarization-dependent diffraction grating, which is either the +1 diffraction order or the −1 diffraction order, when the corrected light beam has a preset corrected polarization state that is circular; and the spectrometer includes elements for modifying polarization (1100) placed between the entrance slit and the angular dispersion elements, which are suitable for modifying the polarization state of the upstream light beam in order to generate the corrected light beam with a preset corrected polarization state.

公开(公告)号：US20170184449A1

公开(公告)日：2017-06-29

申请号：US15313173

申请日：2015-06-17

Applicant: Sony Corporation

Inventor： Ken Ozawa

IPC: G01J1/42 ,  G01J1/04

CPC classification number: G01J1/42 ,  A61B5/0075 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/14551 ,  A61B5/14552 ,  A61B5/14558 ,  A61B5/681 ,  G01J1/0411 ,  G01J1/0429 ,  G01J1/0488 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/027 ,  G01J3/2823 ,  G01J3/4531 ,  G01J4/04 ,  G01J2004/005 ,  G01N21/314 ,  G01N21/359 ,  G01N2021/3595

Abstract: An imaging device and method are provided. Light from an object is provided as a plurality of sets of light beams to a phase difference array having a plurality of elements. The phase difference array is configured to provide different optical paths for light included within at least some of a plurality of sets of light beams. The light from the phase difference array is received at an imaging element array. The imaging element array includes a plurality of imaging elements. Information obtained from hyperspectral imaging data based on output signals of the imaging element array can be displayed.

公开(公告)号：US09631973B2

公开(公告)日：2017-04-25

申请号：US14340072

申请日：2014-07-24

Applicant: RAYTHEON COMPANY

Inventor： Terry Dorschner

IPC: G01J1/04 ,  G02F1/1347 ,  G01J3/02 ,  G01J1/42 ,  G01J3/28 ,  G01J3/18 ,  G01J4/04

CPC classification number: G01J1/0429 ,  G01J1/42 ,  G01J3/0224 ,  G01J3/18 ,  G01J3/2823 ,  G01J4/04 ,  G02F1/13473

Abstract: A programmable multifunction spectral and/or polarization imager. In one example, such an imager includes an imaging optical subsystem configured to receive electromagnetic radiation from a distant scene, a focal plane array configured to produce an image of the scene, and a programmable polarimetry subsystem electrically switchable between an ON state in which the polarimetry subsystem receives the electromagnetic radiation and provides polarized electromagnetic radiation to the focal plane array, and an OFF state in which the polarimetry system is configured as a first substantially clear aperture that passes the electromagnetic radiation to the focal plane array. In certain examples, the imager includes a programmable spectral imaging sub-system configurable between an ON state and an OFF state.

公开(公告)号：US20170082490A1

公开(公告)日：2017-03-23

申请号：US14863225

申请日：2015-09-23

Applicant: Agilent Technologies, Inc.

Inventor： Charles Hoke ,  Christopher Ryan Moon ,  Andrew Ghetler ,  Yang Han

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01J3/2823 ,  G01J3/0213 ,  G01J3/0224 ,  G01J3/108 ,  G01J3/28 ,  G01J3/42

Abstract: An imaging scanner and a method for using the same are disclosed. The scanner includes a variable attenuator adapted to receive a light beam generated by a MIR laser and that generates an attenuated light beam therefrom characterized by an attenuation level. The scanner includes an optical assembly that focuses the attenuated light beam to a point on a specimen. A light detector measures an intensity of light leaving the point on the specimen, the light detector being characterized by a detector dynamic range. A controller forms a plurality of MIR images from the intensity as a function of position on the specimen, each of the plurality of MIR images being formed with a different level of attenuation of the light beam. The controller combines the plurality of MIR images to generate a combined MIR image having a dynamic range greater than the detector dynamic range.