公开(公告)号：US20180335344A1

公开(公告)日：2018-11-22

申请号：US15596695

申请日：2017-05-16

Applicant: Li-Cor, Inc.

Inventor： Ahmed Bouzid

IPC: G01J3/02 ,  G01J3/10 ,  G01N21/39 ,  G02B17/00 ,  H01S3/00

Abstract: Systems and methods for controlling optical feedback in an optical system having a radiation source optically coupled via mode matching optics with a resonant optical cavity. The cavity includes at least two cavity mirrors, one of which is a cavity coupling mirror, and has a plurality of optical resonance cavity modes, wherein the radiation source emits a beam of continuous wave radiation and is capable of being scanned whereby a mean optical frequency of the continuous wave radiation beam is adjustable over a range of frequencies, wherein the radiation source is responsive to optical feedback radiation emerging from the cavity, and wherein the mode matching optics couples the beam of continuous wave radiation to the cavity via the cavity coupling mirror. The radiation source and the mode matching optics are aligned so that a mode fill ratio is reduced relative to a maximum mode fill ratio, wherein for the maximum mode-fill ratio the laser beam is coupled with a fundamental cavity mode.

公开(公告)号：US10132748B2

公开(公告)日：2018-11-20

申请号：US15123894

申请日：2015-03-06

Applicant: LASER—UND MEDIZIN-TECHNOLOGIE GMBH BERLIN

Inventor： Jürgen Helfmann ,  Hans-Joachim Cappius

IPC: G01N21/00 ,  G01N21/47 ,  G01J3/02 ,  G01J3/42 ,  G01N21/3554 ,  G01N21/49 ,  A61B5/145 ,  A61B5/1455 ,  G01J3/10 ,  G01N21/33 ,  G01N21/31

Abstract: An optical sensor device which measures in a spatially resolving manner is disclosed. In order to devise such a sensor device with which a contacting measurement of the article to be measured can be carried out and which can be mass-produced, the sensor device is designed such that a transfer of the calibration onto individual sensor devices is possible with high accuracy. According to certain embodiments of the design of the sensor device and of the evaluation methods, interferences with the measurement of the amount of the target substance are minimized.

公开(公告)号：US10126170B2

公开(公告)日：2018-11-13

申请号：US15259687

申请日：2016-09-08

Applicant: Massachusetts Institute of Technology

Inventor： David Burghoff ,  Yang Yang ,  Qing Hu

IPC: G01J3/28 ,  G01J3/10

Abstract: According to one aspect, a multi-heterodyne system is disclosed, which comprises a first laser source for generating multi-mode radiation having a frequency spectrum characterized by a first plurality of phase coherent frequencies, and a second laser source for generating multi-mode radiation having a frequency spectrum characterized by a second plurality of phase coherent frequencies. The system further comprises at least one detector for detecting a combination of the multi-mode radiation generated by the first and second laser sources so as to provide a multi-heterodyne signal having a frequency spectrum characterized by a plurality of beat frequencies, each beat frequency corresponding to a pairwise difference in the first and second plurality of phase coherent frequencies. The system further comprises an analyzer for receiving said multi-heterodyne signal and configured to employ a predictive model of the multi-heterodyne signal to provide estimates of any of phase error and timing error associated with the beat frequencies.

公开(公告)号：US10113910B2

公开(公告)日：2018-10-30

申请号：US14836878

申请日：2015-08-26

Applicant: Digimarc Corporation

Inventor： Hugh L. Brunk ,  Geoffrey B. Rhoads ,  Cynthia Archer ,  Arlie Conner

IPC: G01J3/28 ,  G06K9/62 ,  H04N9/04 ,  G06K9/46 ,  G06K9/20 ,  G01J3/02 ,  G01J3/10 ,  H04N5/235

Abstract: An image capture device, such as a smartphone or point of sale scanner, is adapted for use as an imaging spectrometer, by synchronized pulsing of different LED light sources as different image frames are captured by the image sensor. A particular implementation employs the CIE color matching functions, and/or their orthogonally transformed functions, to enable direct chromaticity capture. These and various other configurations of spectral capture devices are employed to capture spectral images comprised of spectral vectors having multi-dimensions per pixel. These spectral images are processed for use in object identification, classification, and a variety of other applications. Particular applications include produce (e.g., fruit or vegetable) identification. A great variety of other features and arrangements are also detailed.

公开(公告)号：US10107741B2

公开(公告)日：2018-10-23

申请号：US15287011

申请日：2016-10-06

Applicant: Duvas Technologies Limited

Inventor： Craig Sawyers

IPC: G01N21/03 ,  G01N21/3504 ,  G01N21/33 ,  G01J3/02 ,  G01J3/10 ,  G01J3/42

Abstract: Systems and methods of the present disclosure are directed to detecting species within a fluid using a multi-pass absorption cell and a spectrometer. The absorption cell includes a plurality of mirrors arranged in a manner such that a detection light traverses multiple passes through the fluid within the absorption cell. In some implementations, the detection light is reflected by the plurality of mirrors to form optical paths in more than one plane. The system also includes an electronic unit configured to receive and process spectral data from the spectrometer. In some implementations, the electronic unit communicates with at least one computational unit over a communication interface to send a portion of the spectral data for processing. The electronic unit may also receive processed data from the computational unit.

公开(公告)号：US20180274976A1

公开(公告)日：2018-09-27

申请号：US15762429

申请日：2016-09-23

Applicant: THE UNIVERSITY OF SOUTH ALABAMA

Inventor： Silas Leavesley ,  Thomas Rich

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/28

Abstract: An illumination system incorporating a multi-faceted mirror in operative communication with an array of discrete illumination sources. The multi-faceted mirror may accept incident light beams from discrete illumination sources located at different positions and then deliver a reflected output to a common location for direct acceptance by an optical/imaging device or by a light guide transmission device operatively connected to a downstream optical/imaging device. Individual light sources may be selected and/or combined in a defined sequence by selectively activating and deactivating such light sources electronically with no need for moving parts. By pulsing different illumination sources, the optical/imaging system may be provided with a feed of narrow-band illumination for use in imaging. Outputs from several illumination sources can also be combined if desired to produce a custom-tuned illumination spectrum for a particular application.

公开(公告)号：US10080484B2

公开(公告)日：2018-09-25

申请号：US14611015

申请日：2015-01-30

Applicant: University of Washington

Inventor： Chenying Yang ,  Eric J. Seibel ,  Leonard Y. Nelson ,  Timothy D. Soper

IPC: A61B6/00 ,  A61B1/04 ,  G02B23/26 ,  G01N21/64 ,  A61B1/00 ,  G01J3/06 ,  G01J3/10 ,  G01J3/28 ,  G01J3/36 ,  G01J3/44 ,  G01N21/27 ,  G01N21/47 ,  G01J3/02

CPC classification number: A61B1/043 ,  A61B1/00009 ,  A61B1/00165 ,  A61B1/00172 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0278 ,  G01J3/06 ,  G01J3/10 ,  G01J3/28 ,  G01J3/36 ,  G01J3/4406 ,  G01J2003/065 ,  G01N21/278 ,  G01N21/474 ,  G01N21/6456 ,  G01N21/6486 ,  G01N2021/4742 ,  G01N2021/6417 ,  G01N2021/6419 ,  G01N2021/6484 ,  G02B23/26 ,  G02B26/103

Abstract: Improved methods, systems and apparatus relating to wide field fluorescence and reflectance imaging are provided, including improved methods, systems and apparatus relating to removal of background signals such as autofluorescence and/or fluorophore emission cross-talk; distance compensation of fluorescent signals; and co-registration of multiple signals emitted from three dimensional tissues.

公开(公告)号：US20180252582A1

公开(公告)日：2018-09-06

申请号：US15846204

申请日：2017-12-19

Applicant: OMRON Corporation

Inventor： Shinya FURUKAWA ,  Takahiro SUGA ,  Hiroaki TAKIMASA

IPC: G01J3/28 ,  G01J3/10

CPC classification number: G01J3/2803 ,  G01B11/026 ,  G01B11/14 ,  G01B11/26 ,  G01J3/0218 ,  G01J3/0237 ,  G01J3/0248 ,  G01J3/0278 ,  G01J3/06 ,  G01J3/10 ,  G02B6/02042 ,  G02B6/32

Abstract: A confocal measuring apparatus (1) includes a light source (10), an optical system (30) configured to receive reflected light from a measurement surface, a light guide part (20) into which a plurality of cores including a first core (26) and a second core (28) is built and configured to propagate the reflected light by the plurality of cores, a displacement amount measurement part (40) including a spectroscope (42) configured to separate the reflected light propagated by the first core into each wavelength components and a detector (44) having a plurality of light receiving elements arranged to correspond to a spectral direction by the spectroscope, and a peripheral image measurement part (60) configured to form an image of the reflected light propagated by the second core on the plurality of image pickup elements and to generate a peripheral image with respect to a measurement position of the measurement surface.

公开(公告)号：US10066997B2

公开(公告)日：2018-09-04

申请号：US15120373

申请日：2015-02-17

Applicant: Universität Stuttgart

Inventor： Klaus Körner ,  Wolfgang Osten ,  Tobias Boettcher ,  Wolfram Lyda ,  Marc Gronle

IPC: G01N21/25 ,  G01J3/28 ,  G01J3/10 ,  G01J3/433 ,  G01B11/25 ,  G01J3/02 ,  G01B11/14 ,  G01B11/24 ,  G01J3/26

Abstract: The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case. The modulator comprises at least one electrically controllable three-dimensional light modulator, or a plurality of electronic control modules assigned to the individual monochromatic or quasi-monochromatic light sources.

公开(公告)号：US10066993B2

公开(公告)日：2018-09-04

申请号：US15620693

申请日：2017-06-12

Applicant: KLEIN MEDICAL LIMITED

Inventor： Raymond Andrew Simpkin ,  Donal Paul Krouse ,  Bryan James Smith

IPC: G01J5/02 ,  G01J3/10 ,  G01N21/3577 ,  G01N21/27 ,  G01J3/02 ,  G01N21/359 ,  G01J3/28

Abstract: A method and analyser for identifying or verifying or otherwise characterising a sample comprising: using or having an electromagnetic radiation source for emitting electromagnetic radiation in at least one beam at a sample, the electromagnetic radiation comprising at least two different wavelengths, using or having a sample detector that detects affected electromagnetic radiation resulting from the emitted electromagnetic radiation affected by the sample and provides output representing the detected affected radiation, and using or having a processor for determining sample coefficients from the output, and identifying or verifying or otherwise characterising the sample using the sample coefficients and training coefficients determined from training samples, wherein the coefficients reduce sensitivity to a sample retainer variation and/or are independent of concentration.