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：US09891107B1

公开(公告)日：2018-02-13

申请号：US14216058

申请日：2014-03-17

Applicant: Thomas A. Mitchell

Inventor： Thomas A. Mitchell

IPC: G01J3/28 ,  G02B5/18 ,  G02B27/30 ,  G01J3/02 ,  G01J3/04

CPC classification number: G01J3/2823 ,  G01J3/0208 ,  G01J3/04 ,  G02B5/1842 ,  G02B27/30 ,  G02B2005/1804

Abstract: The present disclosure provides an optical imaging system that defines an optical path. In an aspect, the optical imaging system includes a first optical sub-system configured to substantially image, at a focus plane, electromagnetic radiation emanating from an object plane, a slit element at the focus plane to extract a line image from the electromagnetic radiation, a second optical sub-system configured to collimate, at a center plane, the electromagnetic radiation from the slit element, a dispersive element at the center plane with variable dispersive properties, a third optical sub-system configured to image the collimated electromagnetic radiation from the center plane to an image plane, and a detecting element at the image plane. In one example, the slit element is mechanically movable into and out of the optical path.

公开(公告)号：US09880053B2

公开(公告)日：2018-01-30

申请号：US14883097

申请日：2015-10-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takamasa Ando ,  Tsuguhiro Korenaga

IPC: G01J3/28 ,  G01J3/14 ,  G02B3/00 ,  G01J3/02

CPC classification number: G01J3/14 ,  G01J3/0208 ,  G01J2003/2813 ,  G01J2003/2826 ,  G02B3/0062

Abstract: An image pickup apparatus includes an encoder which is arranged on an optical path of light incident from an object and which has a plurality of regions with first light transmittance and a plurality of regions with second light transmittance lower than the first light transmittance, a dispersive element which is arranged on an optical path of at least one part of light after passage through the encoder and which spatially shifts the at least one part of the light in accordance with wavelength, and at least one image pickup device which is arranged to receive light after passage through the dispersive element and light without passage through the dispersive element and which acquires a first image, in which light components for respective wavelengths spatially shifted by the dispersive element are superimposed, and a second image based on the light without passage through the dispersive element.

公开(公告)号：US09874474B2

公开(公告)日：2018-01-23

申请号：US15058693

申请日：2016-03-02

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  IMEC TAIWAN

Inventor： Seongho Cho ,  Chaokang Liao ,  Dongho Kim

IPC: G01J3/00 ,  G01J3/42 ,  G01J3/02 ,  G01J3/10 ,  A61B5/00 ,  A61B5/145 ,  A61B5/1455

CPC classification number: G01J3/42 ,  A61B5/0075 ,  A61B5/14532 ,  A61B5/1455 ,  A61B2560/045 ,  G01J3/0208 ,  G01J3/0243 ,  G01J3/0291 ,  G01J3/108

Abstract: A biometric sensor that measures biometric information and a biometric analysis system including the biometric sensor are provided. The biometric sensor may include: a light source configured to emit light toward a region of interest of an object under examination, the light being diffused at the region of interest; a collimator that includes a though-hole and is configured to collimate the diffused light received from the region of interest; and a spectrometer configure to analyze the diffused light transmitted by the collimator.

公开(公告)号：US09869591B2

公开(公告)日：2018-01-16

申请号：US14784366

申请日：2013-08-22

Applicant: Hitachi, Ltd.

Inventor： Shigeharu Kimura

IPC: G01J3/44 ,  G02F1/365 ,  G02F1/35 ,  G01J3/02 ,  G01N21/65 ,  G02B21/00

CPC classification number: G01J3/44 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/36 ,  G01J3/453 ,  G01N21/65 ,  G01N2021/653 ,  G02B21/002 ,  G02B21/0056 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528

Abstract: To measure homodyne interference with a CARS microscope, a supercontinuum beam is used as a light source. A supercontinuum beam is generated using a nonlinear optical fiber that has normal dispersion in which the coherence between pulses is maintained. As the phases of the interference components of detected beams are the same between pulses, it is possible to integrate the interference components and thus improve the signal-noise ratio.

公开(公告)号：US09869587B2

公开(公告)日：2018-01-16

申请号：US15292283

申请日：2016-10-13

Applicant: Beijing Information Science & Technology University

Inventor： Lianqing Zhu ,  Wei He ,  Mingli Dong ,  Fei Luo ,  Feng Liu ,  Xiaoping Lou ,  Hong Li

IPC: G01J3/18 ,  G02B6/02 ,  G02F2/00

CPC classification number: G01J3/1895 ,  G01J3/0208 ,  G01J3/28 ,  G01J3/2803 ,  G02B6/02076 ,  G02F2/00

Abstract: A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a linear array detector, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, a linear array detector. The laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, and a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, the imaging focus mirror in sequence, and is finally converged to the linear array detector.

公开(公告)号：US20170370778A1

公开(公告)日：2017-12-28

申请号：US15676720

申请日：2017-08-14

Applicant: Honeywell International Inc.

Inventor： Kwong Wing Au ,  Barrett E. Cole ,  Christopher S. Larsen ,  Sharath Venkatesha

IPC: G01J5/10 ,  G01J5/00 ,  G01J5/08

CPC classification number: G01J5/0018 ,  G01J3/0208 ,  G01J3/027 ,  G01J3/2803 ,  G01J5/602 ,  G01J2003/1213

Abstract: Devices, methods, systems, and computer-readable media for a multiband detector are described herein. One or more embodiments include a multiband detector designed to detect an emission source including a broadband lens, a broadband detector, and a filter that allows electromagnetic radiation entering the system to be filtered into at least two wavelength bands before contacting the broadband detector wherein one or more wavelength bands are used to determine system functionality and wherein one or more other wavelength bands are used to identify the presence of an emission source having a characteristic particular wavelength or wavelength range.

公开(公告)号：US20170370774A1

公开(公告)日：2017-12-28

申请号：US15527055

申请日：2015-10-28

Applicant: KONICA MINOLTA, INC.

Inventor： Mikio UEMATSU

IPC: G01J3/46 ,  G09G5/02 ,  G01J3/51 ,  H04N1/60 ,  G01J1/04

CPC classification number: G01J3/465 ,  G01J1/04 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/505 ,  G01J3/51 ,  G01J3/513 ,  G01J3/524 ,  G01M11/0285 ,  G09G5/02 ,  G09G2320/0693 ,  H04N1/603 ,  H04N1/6033 ,  H04N1/6052

Abstract: In a direct stimulus value reading type colorimetric photometer, first, second, and third colorimetric optical systems have spectral responsivities approximate to first, second, and third parts of the color matching function, respectively. A deriving unit derives a colorimetric value corresponding to a case in which the color matching function is selected as an evaluation function for colorimetry and a photometric value corresponding to a case in which the spectral luminous efficiency is selected as an evaluation function for photometry (i.e. “CASE”) from three signals. The spectral luminous efficiency is not consistent with any one of the first, second, and third parts. A fourth colorimetric optical system may have spectral responsivity approximate to the spectral luminous efficiency, and the deriving unit may derive the colorimetric value corresponding to the CASE from a fourth signal.

公开(公告)号：US20170356799A1

公开(公告)日：2017-12-14

申请号：US15620323

申请日：2017-06-12

Applicant: PARROT DRONES

Inventor： Antoine BEYELER ,  Eng Hong SRON

IPC: G01J3/02 ,  B64C39/02 ,  B64D47/08

CPC classification number: G01J3/0229 ,  B64C39/024 ,  B64C2201/021 ,  B64C2201/123 ,  B64C2201/127 ,  B64D47/08 ,  G01J1/0411 ,  G01J1/0474 ,  G01J1/0488 ,  G01J1/06 ,  G01J1/4204 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/36 ,  G01J2001/4266

Abstract: The imaging assembly includes: a multi-band sensor (5), comprising a plurality of light sensors (7) each for measuring a light intensity returned by a target (8) in a predetermined frequency band; a sunlight detector (9), comprising a plurality of control sensors (11) each for measuring an ambient light intensity in one of the predetermined bands of frequencies of the multi-band sensor (5) each associated with a band-pass filtre; an electronic module (13) configured so as to calculate at least one characteristic variable value of the light intensity returned by the target (8) in each predetermined frequency band; the sunlight detector (9) comprising a box casing (21), the control sensors (11) being attached to the box casing (21), the band-pass filtres (17) being attached to the box casing (21) each one so as to be facing the photosensitive surface of the associated control sensor.

公开(公告)号：US09797776B2

公开(公告)日：2017-10-24

申请号：US15166374

申请日：2016-05-27

Applicant: Sean Xiaolu Wang ,  Qun Li

Inventor： Sean Xiaolu Wang ,  Qun Li

IPC: G01J3/30 ,  G01J3/443 ,  G01J3/10 ,  G01J3/06 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01J3/443 ,  G01J3/0208 ,  G01J3/06 ,  G01J3/10 ,  G01J3/28

Abstract: This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz or even higher range. When the laser beam hits the sample, it generates several thousands of micro-plasma emissions per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasma emissions. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the limit of detection (LOD). In addition, the influence of pulse to pulse variation of the laser is minimized since the obtained LIBS spectrum is the spectrum of a plurality of micro-plasma emissions produced by a plurality of laser pulses. The high repetition rate laser also makes it possible to measure the LIBS signal at a short and a long integration time and mathematically combining the two spectra to obtain a LIBS spectrum with enhanced dynamic range.