公开(公告)号：US10061083B2

公开(公告)日：2018-08-28

申请号：US15167459

申请日：2016-05-27

Applicant: Lumentum Operations LLC

Inventor： Sheldon McLaughlin

IPC: G01J3/28 ,  G02B6/293 ,  G01J3/02 ,  G01J3/18 ,  G01J3/22 ,  G02B5/18 ,  G02B5/12 ,  G02B6/35 ,  G02B17/08

CPC classification number: G02B6/29313 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0243 ,  G01J3/0256 ,  G01J3/0291 ,  G01J3/1804 ,  G01J3/22 ,  G02B5/12 ,  G02B5/1809 ,  G02B5/1814 ,  G02B5/1866 ,  G02B6/2931 ,  G02B6/29311 ,  G02B6/2938 ,  G02B6/354 ,  G02B17/0856 ,  G02B2005/1804

Abstract: A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion.

公开(公告)号：US20180216997A1

公开(公告)日：2018-08-02

申请号：US15749539

申请日：2016-08-04

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takafumi YOKINO ,  Katsumi SHIBAYAMA ,  Katsuhiko KATO

IPC: G01J3/18 ,  B29C43/02 ,  G01J3/36 ,  G02B5/18 ,  G02B5/32

CPC classification number: G01J3/18 ,  B29C43/021 ,  B29C2043/023 ,  B29L2011/00 ,  B29L2011/0066 ,  G01J3/0259 ,  G01J3/0262 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/2803 ,  G01J3/36 ,  G01J2003/1857 ,  G02B5/18 ,  G02B5/32 ,  G02B7/00

Abstract: A spectrometer includes a support having a bottom wall part in which a depression is provided and a side wall part, a light detection element supported by the side wall part while opposing the depression, a resin layer disposed at least on an inner surface of the depression, and a dispersive part provided in the resin layer on the inner surface of the depression. The resin layer is in contact with an inner surface of the side wall part. A thickness of the resin layer in a first direction in which the depression and the light detection element oppose each other is larger in a part in contact with the inner surface of the side wall part than in a part disposed on the inner surface of the depression.

公开(公告)号：US20180209849A1

公开(公告)日：2018-07-26

申请号：US15416552

申请日：2017-01-26

Applicant: WESTCO SCIENTIFIC INSTRUMENTS, INC

Inventor： Jerome J. Workman, Jr. ,  Tushar Saraf ,  Thomas Andrew Bennett ,  John Glaberson

IPC: G01J3/28 ,  G01J3/18 ,  G01J3/02

CPC classification number: G01J3/28 ,  G01J3/0202 ,  G01J3/0235 ,  G01J3/0267 ,  G01J3/0289 ,  G01J3/06 ,  G01J3/1804 ,  G01J2003/1828

Abstract: Aspects of blending data detected by a monochromator over multiple wavelength ranges is described herein. In one embodiment, the monochromator includes a diffraction grating, a grating drive motor that rotates the diffraction grating to provide, by diffraction of broadband light, first dispersed wavelengths of light and second dispersed wavelengths of light, a detector that detects a first reflection from the first dispersed wavelengths of light and a second reflection from the second dispersed wavelengths of light, and processing circuitry that blends data values from the first reflection and data values from the second reflection together to provide a spectrum of combined data values. By blending data detected over multiple ranges, measurements of relatively high precision and quality can be provided over a wider spectral range.

公开(公告)号：US10012535B2

公开(公告)日：2018-07-03

申请号：US14965695

申请日：2015-12-10

Applicant: National Chiao Tung University

Inventor： Cheng-Sheng Huang ,  Hsin-An Lin

IPC: G01J3/02 ,  G01J3/18 ,  G01J3/26

CPC classification number: G01J3/0205 ,  G01J3/0218 ,  G01J3/1804 ,  G01J3/26

Abstract: A dispersive element is incorporated with an optical sensor as a spectrometer. The dispersive element includes a guided-mode resonance filter having a plurality of resonance regions. The resonance regions respectively have different filter characteristics, each reflecting a first light beam of a tested light source or transmitting a second light beam of the tested light source light source to the optical sensor, wherein the wavelength of the first light beam is different from that of the second light beam. In one embodiment, the dispersive element is incorporated with an optical sensor to form a miniature, high-resolution and low-cost spectrometer. The spectrometer makes use of the transmission efficiencies of the resonance regions of the guided-mode resonance filter and the light intensity distribution detected by the photosensitive regions of the optical sensor to acquire the spectral data of the tested light source.

公开(公告)号：US10006855B2

公开(公告)日：2018-06-26

申请号：US15359296

申请日：2016-11-22

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/35 ,  G01N21/3577 ,  G01J3/42 ,  G01J3/02 ,  G01J3/18 ,  G01J3/36 ,  G01J3/12

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/108 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3563 ,  G01N21/3577 ,  G01N2021/3148 ,  G01N2201/0245 ,  G01N2201/0638

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

公开(公告)号：US09995626B1

公开(公告)日：2018-06-12

申请号：US14884882

申请日：2015-10-16

Applicant: Dow Global Technologies LLC

Inventor： Mary Anne Leugers

IPC: G01J3/18 ,  G02B21/00 ,  G01J3/44 ,  A61B5/00

CPC classification number: G01J3/18 ,  A61B5/0068 ,  G01J3/4406 ,  G01J3/4412 ,  G02B21/0024 ,  G02B21/0032 ,  G02B21/0076

Abstract: A confocal microscope, operable to focus on any of a plurality of portions of a sample, is optically coupled to a light source and to a spectrograph module. When the confocal microscope focuses on a particular portion of the sample, the confocal microscope directs incident light from the light source to the particular portion and directs responsive light from the particular portion to the spectrograph module. The spectrograph module can be operated using a first diffraction grating having a first line density to obtain a Raman spectrum of the responsive light from the particular portion of the sample. The spectrograph module can also be operated using a second diffraction grating having a second line density that is less than the first line density to obtain a fluorescence or phosphorescence spectrum of the responsive light from the particular portion of the sample.

公开(公告)号：US20180156664A1

公开(公告)日：2018-06-07

申请号：US15828512

申请日：2017-12-01

Applicant: SICK AG

Inventor： Julian EDLER ,  Thomas BEYER ,  Samson FRANK

IPC: G01J3/51 ,  G02B27/10 ,  G01J3/18

CPC classification number: G01J3/51 ,  G01J3/027 ,  G01J3/10 ,  G01J3/18 ,  G01J3/42 ,  G01N21/274 ,  G01N21/39 ,  G01N2021/399 ,  G02B27/10 ,  H01S3/1305

Abstract: A method of securing a modulation range of a wavelength-variable radiation source as part of the measurement of an absorption line of a substance comprises: the radiation source being controlled to transmit radiation such that the wavelength of the radiation runs through the modulation range in accordance with a time pattern; the radiation being filtered by means of a filter in whose pass band the absorption line is disposed and which has at least one filter flank whose actual wavelength is within the modulation range; a spectrum of the filtered radiation being determined in that the intensity of the filtered radiation is detected with respect to the time pattern; and a determination being made whether the spectrum has the at least one filter flank.

公开(公告)号：US09970816B2

公开(公告)日：2018-05-15

申请号：US15510316

申请日：2015-09-08

Applicant: Heptagon Micro Optics Pte. Ltd.

Inventor： Peter Roentgen ,  Markus Rossi

IPC: G01J3/28 ,  G01J3/18 ,  G01N21/27 ,  G01J3/02 ,  G01N21/25 ,  G01J3/10 ,  F21V8/00

CPC classification number: G01J3/18 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/1804 ,  G01J3/1895 ,  G01J3/2803 ,  G01J3/36 ,  G01J2003/2806 ,  G01J2003/2813 ,  G01N21/255 ,  G01N21/27 ,  G02B5/1809 ,  G02B5/1861 ,  G02B6/0026 ,  G02B6/005 ,  G02B6/0055

Abstract: An optoelectronic module includes a light guide arranged to receive light, such as ambient light or light reflected by an object. The light guide has a diffractive grating that includes multiple sections, each of which is tuned to a respective wavelength or narrow band of wavelengths. The module further includes multiple photosensitive elements, each of which is arranged to receive light diffracted by a respective one of the sections of the diffractive grating. The module can be integrated, for example, as part of a spectrometer or other apparatus for optically determining characteristics of an object.

公开(公告)号：US20180128683A1

公开(公告)日：2018-05-10

申请号：US15806305

申请日：2017-11-07

Applicant: California Institute of Technology

Inventor： Seyedeh Sona Hosseini

IPC: G01J3/453 ,  G01J3/18 ,  G01J3/02

CPC classification number: G01J3/453 ,  G01J3/0202 ,  G01J3/0205 ,  G01J3/0218 ,  G01J3/0259 ,  G01J3/18 ,  G01J3/1804 ,  G01J3/4531 ,  G01J3/4532 ,  G01J2003/1204 ,  G01J2003/1208 ,  G01J2003/1861

Abstract: Novel monolithic cyclical reflective spatial heterodyne spectrometers (CRSHS) are presented. Monolithic CRSHS in accordance with the invention have a single frame wherein a flat mirror, roof mirror, and symmetric grating are affixed. The invention contains only fixed parts; the flat mirror, roof mirror, and symmetric grating do not move in relation to the frame. Compared to conventional CRSHS known in the art, the present invention enables much smaller and lighter CRSHS, requires less time and skill for maintenance, and is a better economic option. The disclosed invention may include fixed field-widening optical elements or a fiber-fed assembly.

公开(公告)号：US09939587B2

公开(公告)日：2018-04-10

申请号：US15249608

申请日：2016-08-29

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Seunghoon Han ,  Yu Horie ,  Andrei Faraon ,  Amir Arbabi

IPC: G02B6/12 ,  G02B6/293 ,  G01J3/18 ,  G02B5/20 ,  G02B5/18 ,  G02B5/28

CPC classification number: G02B6/29356 ,  G01J3/18 ,  G01J3/1895 ,  G01J3/26 ,  G01J2003/2826 ,  G02B5/1809 ,  G02B5/201 ,  G02B5/281 ,  G02B5/288 ,  G02B6/29325

Abstract: An on-chip optical filter having Fabri-Perot resonators and a spectrometer may include a first sub-wavelength grating (SWG) reflecting layer and a second SWG reflecting layer facing each other. A plurality of Fabri-Perot resonators are formed by the first SWG reflecting layer and the second SWG reflecting layer facing each other. Each of the Fabri-Perot resonators may transmit light corresponding to a resonance wavelength of the Fabri-Perot resonator. The resonance wavelengths of the Fabri-Perot resonators may be determined according to duty cycles of grating patterns.