公开(公告)号：US09995629B2

公开(公告)日：2018-06-12

申请号：US15808898

申请日：2017-11-10

Applicant: Technische Universität München

Inventor： Michael Schardt

IPC: G01J3/45 ,  G01J3/02

CPC classification number: G01J3/45 ,  G01J3/021 ,  G01J3/453 ,  G01J3/4531

Abstract: A static Fourier transform spectrometer is disclosed that includes a beam splitter, a mirror device, and a collection optic. The beam splitter divides an input light beam into a first arm and a second arm, wherein the first arm is reflected by the beam splitter and the second arm passes through the beam splitter, wherein the first arm extends to the converging optical unit without deflection after reflection at the mirror device, wherein the second arm extends to the converging optical unit without deflection after passing through the beam splitter, and wherein the collection optic merges the first arm and the second arm for interference.

公开(公告)号：US20180092529A1

公开(公告)日：2018-04-05

申请号：US15729252

申请日：2017-10-10

Applicant: IDx, LLC

Inventor： Michael Abramoff ,  Edward DeHoog

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

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：US09915565B2

公开(公告)日：2018-03-13

申请号：US14438641

申请日：2013-10-24

Applicant: Applied Spectral Imaging Ltd.

Inventor： Nir Katzir

IPC: G01J3/45 ,  G01J3/453 ,  G02B27/14 ,  G01J3/28 ,  G01J3/02

CPC classification number: G01J3/4532 ,  G01J3/0237 ,  G01J3/0297 ,  G01J3/2823 ,  G01J3/45 ,  G02B27/144

Abstract: A method of calibrating a spectral imaging system is disclosed. The spectral imaging system comprises an interferometer having a beam splitter and at least a first reflector and a second reflector. The method comprises: obtaining data pertaining to an interference pattern model, operating the spectral imaging system to provide an interference pattern of a received light beam, and varying a relative orientation between at least two of: the beam splitter, the first reflector and the second reflector, until the interference pattern of the input light beam substantially matches the interference pattern model.

公开(公告)号：US09903808B2

公开(公告)日：2018-02-27

申请号：US14590218

申请日：2015-01-06

Applicant: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

Inventor： David F. Plusquellic ,  David A. Long ,  Kevin O. Douglass ,  Joseph T. Hodges ,  Adam J. Fleisher

IPC: G01B9/02 ,  G01J3/45 ,  H01S3/00 ,  G02F1/01 ,  G01N21/25 ,  G01J3/433 ,  G01J3/453 ,  G01N21/39

CPC classification number: G01N21/255 ,  G01J3/433 ,  G01J3/453 ,  G01N21/39 ,  G01N2021/399 ,  G02F1/01 ,  G02F2203/56 ,  H01S3/0057

Abstract: A comb source includes a continuous wave frequency source to provide a continuous wave radiation; a first modulator in optical communication with the continuous wave frequency source; a second modulator in optical communication with continuous wave frequency source; and a waveform driver in electrical communication with the first modulator and the second modulator. A process for producing an analyte spectrum includes producing a first comb from a continuous wave frequency and a first waveform; producing a reference comb and a probe comb from the first comb; subjecting a sample to the probe comb; producing a sample comb in response to subjecting the sample to the probe comb; producing a composite comb from the reference comb and the sample comb; producing a second comb from the continuous wave frequency and a second waveform; and combining the second comb and the composite comb to produce the analyte spectrum.

公开(公告)号：US20180045569A1

公开(公告)日：2018-02-15

申请号：US15676979

申请日：2017-08-14

Applicant: SPECTRAL INSIGHTS PRIVATE LIMITED

Inventor： Sumit Nath ,  Dipankar Das ,  Suhash Gerald

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/14 ,  G01J3/45

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/14 ,  G01J3/36 ,  G01J3/45 ,  G01J3/4531 ,  G01J2003/1213 ,  G01J2003/2826

Abstract: A spectral imaging system includes a spectrometer and an optics imaging system. The spectrometer is operable for generating spectral signatures of objects from a scene. The optics imaging system is operable to generate six or more responses from the same scene. Each of the six or more responses represents different spectral content of the objects in the scene. The responses generated by the optics imaging system can be used to generate a hypercube using spectral reconstruction techniques. In an embodiment, the spectral imaging system could be implemented as part of a mobile phone.

公开(公告)号：US09823128B2

公开(公告)日：2017-11-21

申请号：US15027501

申请日：2014-10-16

Applicant: THE ARIZONA BOARD OF REGENTS on behalf of THE UNIVERSITY OF ARIZONA

Inventor： Stanley Pau ,  Amit Ashok

IPC: G01N21/25 ,  G01J3/28 ,  G01J3/51 ,  G01J3/36 ,  G01J3/45

CPC classification number: G01J3/2823 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/36 ,  G01J3/45 ,  G01J3/513 ,  G01J2003/2806 ,  G01J2003/2826

Abstract: Multispectral imaging systems are disclosed. An exemplary multispectral imager includes a narrow-band absorptive filter array and a sensor array comprising a plurality of pixels. The narrow-band absorptive filter array has a plurality of filter elements, each filter element being associated with a pixel of the sensor array. The filter elements are organized into groups of N filter elements, where N is greater than three. Each filter element absorbs one narrow band and transmits N−1 narrow bands. The group of N filter elements absorbs all N narrow bands.

公开(公告)号：US09797774B2

公开(公告)日：2017-10-24

申请号：US14580848

申请日：2014-12-23

Applicant: Seiko Epson Corporation

Inventor： Akira Sano ,  Takashi Nagate ,  Kazunori Sakurai ,  Nozomu Hirokubo

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/45 ,  G01J3/26 ,  G01J3/32

CPC classification number: G01J3/2823 ,  G01J3/0202 ,  G01J3/0235 ,  G01J3/027 ,  G01J3/0272 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32

Abstract: A spectrometry system includes an imaging apparatus that includes an imaging element which captures an image, and a spectroscopic module that includes a wavelength variable interference filter and an attachment unit which holds the wavelength variable interference filter, is provided to be attachable to and detachable from the imaging apparatus, and can dispose the wavelength variable interference filter on an optical path of incident light to the imaging element during attachment to the imaging apparatus.

公开(公告)号：US09759835B2

公开(公告)日：2017-09-12

申请号：US15104921

申请日：2015-02-10

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Tianxu Zhang ,  Xiangyan Liu ,  Xiaobing Dai ,  Li Liu ,  Hongtao Yu

IPC: G06K9/00 ,  G01V8/10 ,  G01J3/45 ,  G01J5/20 ,  G02B13/14 ,  G06F17/30

CPC classification number: G01V8/10 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0294 ,  G01J3/2823 ,  G01J3/45 ,  G01J5/20 ,  G02B6/42 ,  G02B13/14 ,  G02B17/061 ,  G02B19/009 ,  G02B26/101 ,  G06F17/30259 ,  G06F17/3028 ,  G06K9/00624 ,  G06K9/2018 ,  G06K9/32 ,  G06K2009/00644 ,  G06T2207/10004 ,  G06T2207/10048

Abstract: The present invention discloses an infrared image-spectrum associated intelligent detection method and apparatus, including: first searching for targets in a field of view (FOV), and performing image-spectrum associated intelligent identification sequentially on the searched targets, that is, first performing infrared image target identification on each target, and if a detection identification rate is greater than a set threshold, outputting an identification result and storing target image data; otherwise, acquiring an infrared spectrum of the target, and performing target identification based on infrared spectrum features. The present invention further discloses an apparatus for performing target detection using the above method, and the apparatus mainly includes a two-dimensional scanning mirror, a multiband infrared optical module, a long-wave infrared (LWIR) imaging unit, a broadband infrared spectrum measuring unit, and a processing and control unit. The method and apparatus of the present invention are improvements and enhancements of the conventional infrared target detection method and device, and may be used for infrared image detection, infrared image-spectrum associated detection of the target and infrared spectrum collection of the target. Compared with the conventional infrared detection device, the present invention has a higher performance cost ratio, and can significantly improve the detection identification rate of the target.

公开(公告)号：US09753379B2

公开(公告)日：2017-09-05

申请号：US14794013

申请日：2015-07-08

Applicant: ASML Netherlands B.V.

Inventor： Amandev Singh ,  Henricus Petrus Maria Pellemans ,  Patrick Warnaar

IPC: G03B27/52 ,  G03B27/32 ,  G03F7/20 ,  G01J3/28 ,  G01J3/45 ,  G01N21/47

CPC classification number: G03F7/70491 ,  G01J3/2823 ,  G01J3/45 ,  G01N21/4788 ,  G01N2201/06113 ,  G03F7/70625 ,  G03F7/70633

Abstract: Inspection apparatus (100) is used for measuring parameters of targets on a substrate. Coherent radiation follows an illumination path (solid rays) for illuminating target (T). A collection path (dashed rays) collects diffracted radiation from the target and delivers it to a lock-in image detector (112). A reference beam following a reference path (dotted rays). An acousto-optical modulator (108) shifts the optical frequency of the reference beam so that the intensity of radiation at the lock-in detector includes a time-varying component having a characteristic frequency corresponding to a difference between the frequencies of the diffracted radiation and the reference radiation. The lock-in image detector records two-dimensional image information representing both amplitude and phase of the time-varying component. A second reference beam with a different shift (110) follows a second reference path (dot-dash rays). Interference between the two reference beams can be used for intensity normalization.

公开(公告)号：US20170234729A1

公开(公告)日：2017-08-17

申请号：US15385778

申请日：2016-12-20

Applicant: VERIFOOD, LTD.

Inventor： Damian GOLDRING ,  Dror SHARON ,  Guy BRODETZKI ,  Amit RUF ,  Menahem KAPLAN ,  Sagee ROSEN ,  Omer KEILAF ,  Uri KINROT ,  Kai ENGELHARDT ,  Ittai NIR

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/45 ,  G01J3/28

CPC classification number: G01J3/108 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/0262 ,  G01J3/0264 ,  G01J3/0272 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/36 ,  G01J3/45 ,  G01J5/0265 ,  G01J5/10 ,  G01J2003/1226 ,  G01J2003/123 ,  G01J2003/1239 ,  G01N21/255 ,  G01N33/02

Abstract: A spectrometer comprises a plurality of isolated optical channels comprising a plurality of isolated optical paths. The isolated optical paths decrease cross-talk among the optical paths and allow the spectrometer to have a decreased length with increased resolution. In many embodiments, the isolated optical paths comprise isolated parallel optical paths that allow the length of the device to be decreased substantially. In many embodiments, each isolated optical path extends from a filter of a filter array, through a lens of a lens array, through a channel of a support array, to a region of a sensor array. Each region of the sensor array comprises a plurality of sensor elements in which a location of the sensor element corresponds to the wavelength of light received based on an angle of light received at the location, the focal length of the lens and the central wavelength of the filter.