公开(公告)号：US09782065B2

公开(公告)日：2017-10-10

申请号：US14867897

申请日：2015-09-28

Applicant: IDx, LLC

Inventor： Michael D. Abramoff ,  Edward DeHoog

IPC: A61B3/14 ,  A61B3/10 ,  G01B9/02 ,  G01J3/45 ,  A61B3/00 ,  A61B3/12

CPC classification number: A61B3/102 ,  A61B3/0008 ,  A61B3/0025 ,  A61B3/1005 ,  A61B3/1225 ,  A61B3/14 ,  G01B9/02027 ,  G01B9/02028 ,  G01B9/02044 ,  G01B9/02091 ,  G01B2290/65 ,  G01J3/45

Abstract: Provided is a snapshot spectral domain optical coherence tomographer comprising a light source providing a plurality of beamlets; a beam splitter, splitting the plurality of beamlets into a reference arm and a sample arm; a first optical system that projects the sample arm onto multiple locations of a sample; a second optical system for collection of a plurality of reflected sample beamlets; a third optical system projecting the reference arm to a reflecting surface and receiving a plurality of reflected reference beamlets; a parallel interferometer that provides a plurality of interferograms from each of the plurality of sample beamlets with each of the plurality of reference beamlets; an optical image mapper configured to spatially separate the plurality of interferograms; a spectrometer configured to disperse each of the interferograms into its respective spectral components and project each interferogram in parallel; and a photodetector providing photon quantification.

公开(公告)号：US09711932B2

公开(公告)日：2017-07-18

申请号：US14847139

申请日：2015-09-08

Applicant: IMRA AMERICA, INC.

Inventor： Martin Fermann ,  Ingmar Hartl ,  Axel Ruehl

IPC: H01S3/11 ,  G01J3/45 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/47 ,  G01N21/63 ,  G01N21/65 ,  H01S3/067 ,  G01J3/10 ,  G01N21/35 ,  H01S3/105 ,  H01S3/106 ,  H01S3/107

CPC classification number: H01S3/1106 ,  G01J3/10 ,  G01J3/45 ,  G01J2003/102 ,  G01N21/31 ,  G01N21/3581 ,  G01N21/4795 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/3595 ,  H01S3/067 ,  H01S3/105 ,  H01S3/1068 ,  H01S3/107 ,  H01S3/1115

Abstract: The invention relates to scanning pulsed laser systems for optical imaging. Coherent dual scanning laser systems (CDSL) are disclosed and some applications thereof. Various alternatives for implementation are illustrated. In at least one embodiment a coherent dual scanning laser system (CDSL) includes two passively modelocked fiber oscillators. In some embodiments an effective CDSL is constructed with only one laser. At least one embodiment includes a coherent scanning laser system (CSL) for generating pulse pairs with a time varying time delay. A CDSL, effective CDSL, or CSL may be arranged in an imaging system for one or more of optical imaging, microscopy, micro-spectroscopy and/or THz imaging.

公开(公告)号：US09702816B2

公开(公告)日：2017-07-11

申请号：US15105397

申请日：2013-12-17

Applicant: AKTIEBOLAGET SKF

Inventor： Florin Tatar ,  Defeng Lang

IPC: G01N21/3577 ,  G01J3/42 ,  G01N33/28 ,  G01N21/3554 ,  G01N21/359 ,  G01N21/45 ,  G01N21/85 ,  G01J3/02

CPC classification number: G01N21/3577 ,  G01J3/0218 ,  G01J3/42 ,  G01J3/45 ,  G01J3/4531 ,  G01N21/3554 ,  G01N21/359 ,  G01N21/45 ,  G01N21/8507 ,  G01N33/2847 ,  G01N33/2888 ,  G01N2201/0846

Abstract: A detector for oil condition monitoring includes an optical fiber having a first end and a second end having an end face. A sensor body has a gap in which a sample of the oil may be received and a reflecting surface, the second end of the optical fiber being embedded in the sensor body and having an end face spaced from the reflecting surface across the gap. Light emitted from the optical fiber can pass through the sample of oil and be reflected by the reflecting surface back into the optical fiber. By interferometry of the respective signals, the condition of the oil can be determined.

公开(公告)号：US09683891B2

公开(公告)日：2017-06-20

申请号：US12935772

申请日：2009-03-17

Applicant: Yassine Hadjar ,  Sylvain Blaize ,  Aurelien Bruyant ,  Gilles Lerondel ,  Pascal Royer

Inventor： Yassine Hadjar ,  Sylvain Blaize ,  Aurelien Bruyant ,  Gilles Lerondel ,  Pascal Royer

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/453 ,  G01J3/45

CPC classification number: G01J3/0205 ,  G01J3/02 ,  G01J3/021 ,  G01J3/2803 ,  G01J3/45 ,  G01J3/453

Abstract: A spectrometer for sampling interferograms in two dimensions offering a large spectral band and high spectral resolution with a relative compactness. The spectrometer includes a refracting surface, an array of detecting elements and an array of diffusion elements capturing means at the refracting surface of an interferogram delivered from two interference beams (F1, F2) and forming interference lines parallel to each other along the transverse axis (Ox) of the interferogram within the plane (xOy) of the refracting surface, the array of detection elements being parallel to the plane of the refracting surface and arranged to detect the spatial distribution of the interferogram, wherein the array is a two-dimensional array over an entirety of which the detections elements are disposed equidistantly, and wherein interference lines exhibit an angular shift with the capturing means.

公开(公告)号：US09671287B2

公开(公告)日：2017-06-06

申请号：US14762179

申请日：2014-01-24

Applicant: LAMBDA-X

Inventor： Didier Beghuin

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/45 ,  G01J3/453

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/45 ,  G01J3/4537

Abstract: Described herein is a hyperspectral imaging system in which a polarizing beam splitter, a Wollaston prism, an optical system, and a plane mirror are arranged on an optical axis of the imaging system. An imaging detector is provided on which radiation is focused by an imaging lens. The Wollaston prism is imaged on itself by the optical system and the plane mirror so that translation of the Wollaston prism in a direction parallel to a virtual split plane of the prism effectively provides an optical path length difference that is the same for all points in the object field.

公开(公告)号：US09658162B2

公开(公告)日：2017-05-23

申请号：US14642655

申请日：2015-03-09

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： H. Kumar Wickramasinghe

IPC: G01N21/65 ,  G01J3/44 ,  G01J3/45 ,  G01Q30/02

CPC classification number: G01N21/65 ,  G01J3/0224 ,  G01J3/44 ,  G01J3/45 ,  G01J3/453 ,  G01J9/0215 ,  G01J2009/0261 ,  G01N2021/655 ,  G01Q30/02

Abstract: An apparatus and method for measuring amplitude and/or phase of a molecular vibration uses a polarization modulated pump beam and a stimulating Stokes beam on a probe of a scanning probe microscope to detect a Raman scattered Stokes beam from the sample. The detected Raman scattered Stokes beam is used to derive at least one of the amplitude and the phase of the molecular vibration.

公开(公告)号：US20170122808A1

公开(公告)日：2017-05-04

申请号：US15375190

申请日：2016-12-12

Applicant: Keyence Corporation

Inventor： Shoma Kuga

IPC: G01J3/45 ,  G01B11/06 ,  G01D5/26 ,  G01J3/46

CPC classification number: G01J3/45 ,  G01B11/00 ,  G01B11/06 ,  G01D5/266 ,  G01J3/0218 ,  G01J3/46 ,  G01J3/52

Abstract: Provided are a multi-wavelength photoelectric measurement device, a confocal measurement device, an interference measurement device, and a color measurement device capable of measuring the characteristic amount of a measurement object such as the thickness, distance, displacement, or color with high accuracy using multi-wavelength light such as white light. The multi-wavelength photoelectric measurement device includes a laser light source, a light source optical member for concentrating light from the laser light source, a phosphor excited by light concentrated by the light source optical member, an optical fiber unit that includes one or a plurality of optical fibers and the phosphor disposed on a first end, receives light emitted by the phosphor from the first end, and transmits the received light toward a second end, and a head optical member that concentrates light emitted from the second end of the optical fiber unit toward a measurement object.

公开(公告)号：US09610011B2

公开(公告)日：2017-04-04

申请号：US15172083

申请日：2016-06-02

Applicant: ABBOTT MEDICAL OPTICS INC.

Inventor： Stanley W. Huth ,  Denise Tran

IPC: A61B3/10 ,  A61B3/00 ,  G01B9/02 ,  A61B3/103 ,  G01B11/06 ,  G01J3/45

CPC classification number: A61B3/0025 ,  A61B3/1005 ,  A61B3/101 ,  A61B3/103 ,  G01B9/02 ,  G01B11/06 ,  G01J3/45

Abstract: A method for determining optical properties of a corneal region. The method includes the steps of obtaining a combined tear film aqueous layer plus lipid layer thickness; obtaining a tear film lipid layer thickness; subtracting the tear film lipid layer thickness from the combined tear film aqueous layer plus lipid layer thickness to obtain a tear film aqueous layer thickness; and determining a corneal layer refractive index based on the tear film lipid layer thickness and the tear film aqueous layer thickness.

公开(公告)号：US20170067821A1

公开(公告)日：2017-03-09

申请号：US15356722

申请日：2016-11-21

Applicant: University of Massachusetts

Inventor： Robert H. Giles ,  Gargi Sharma ,  Cecil S. Joseph

IPC: G01N21/3581 ,  G01B9/02

CPC classification number: G01N21/3581 ,  A61B5/0066 ,  G01B9/0203 ,  G01B9/02044 ,  G01B9/02091 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/45 ,  G01J3/4535 ,  G01N21/4795

Abstract: A single-shot terahertz imaging system including an interferometer and a terahertz spectrometer. The interferometer includes a beam splitter configured to receive input terahertz radiation and output first terahertz radiation and second terahertz radiation, a sample configured to reflect the first terahertz radiation, and a mirror configured to reflect the second terahertz radiation. The beam splitter is further configured to receive the reflected first terahertz radiation and the reflected second terahertz radiation, and output interfered terahertz radiation. The terahertz spectrometer is configured to measure the interfered terahertz radiation and includes a frequency dispersive element configured to receive the interfered terahertz radiation and output spatially dispersed terahertz radiation, and a terahertz radiation detector configured to determine the intensity of the spatially dispersed terahertz radiation.

Abstract translation: 包括干涉仪和太赫兹光谱仪的单次太赫兹成像系统。 干涉仪包括分束器，其被配置为接收输入太赫兹辐射并输出第一太赫兹辐射和第二太赫兹辐射，被配置为反射第一太赫兹辐射的样本以及被配置为反射第二太赫兹辐射的反射镜。 分束器还被配置为接收反射的第一太赫兹辐射和反射的第二太赫兹辐射，以及输出受干扰的太赫兹辐射。 太赫兹光谱仪被配置为测量受干扰的太赫兹辐射，并且包括被配置为接收受干扰的太赫兹辐射并输出空间分散的太赫兹辐射的频率分散元件，以及被配置为确定空间分散的太赫兹辐射的强度的太赫兹辐射检测器。

公开(公告)号：US09581492B2

公开(公告)日：2017-02-28

申请号：US14823767

申请日：2015-08-11

Applicant: LI-COR, Inc.

Inventor： Serguei Koulikov

IPC: G01J3/02 ,  G01J3/42 ,  G01J3/45 ,  G01N21/41 ,  G01N21/39

CPC classification number: G01J3/027 ,  G01J3/42 ,  G01J3/45 ,  G01N21/41 ,  G01N2021/391 ,  G01N2021/399

Abstract: Systems and methods for controlling the optical path length between a feedback enabled laser and a cavity, and hence the optical feedback phase. A phasor element, positioned along an optical path between the laser and the cavity coupling mirror, includes a gas medium within a volume defined by the phasor element. The phasor element is configured to adjust or control an optical path length of the laser light between the laser and the cavity coupling mirror by adjusting or controlling a density of the gas medium within the phasor volume.

Abstract translation: 用于控制反馈使能的激光器和空腔之间的光程长度的系统和方法，并因此控制光学反馈阶段。 沿着激光器和腔耦合镜之间的光路定位的相量元件包括由相量元件限定的体积内的气体介质。 相量元件被配置为通过调节或控制相量体积内的气体介质的密度来调节或控制激光和腔耦合反射镜之间的激光的光路长度。