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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 7349. Отображено 100.
12-04-2012 дата публикации

Systems and methods for multispectral imaging

Номер: US20120085932A1
Автор: George Themelis
Принадлежит: Individual

A system ( 10 ) for multispectral imaging includes a first optical filter ( 24, 20 ) having at least two passbands disposed in different spatial positions on the first optical filter, a second optical filter ( 20, 24 ) having another at least two passbands, and processor ( 32 ) adapted to identify an intensity of light in the at least two passband of the second optical filter

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Номер записи: 1
12-07-2012 дата публикации

Apparatus For Detecting And Imaging Explosives On A Suicide Bomber

Номер: US20120175521A1
Автор: Manmohan S. Chawla
Принадлежит: System Planning Corp

An apparatus designed for generating and detecting reflected Terahertz waves using a single pixel Complementary Metal Oxide Semiconductor (CMOS) or Charge Couple Device (CCD) camera is described. Optical alignment between the components is not necessary since the Terahertz waves can propagate from the source to a collimating lens using a metal wire that can be bent obviating the need to have a clear line of sight from the lens to the source or to the camera. The present invention is well-suited for high traffic physical locations currently under surveillance such as security check points and also venues demanding significantly less obtrusive surveillance such as revolving entry doors, moving walkways, and entry gates for airplanes.

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Номер записи: 2
02-08-2012 дата публикации

Frequency selective imaging system

Номер: US20120194713A1
Автор: Jeffrey H. Hunt
Принадлежит: Boeing Co

An apparatus, system, and method are disclosed for a frequency selective imager. In particular, the frequency selective imager includes an array of pixels arranged in a focal plane array. Each pixel includes at least one nanoparticle-sized diameter thermoelectric junction that is formed between nanowires of different compositions. When a nanoparticle-sized diameter thermoelectric junction senses a photon, the nanoparticle-sized diameter thermoelectric junction emits an electrical pulse voltage that is proportional to an energy level of the sensed photon. In one or more embodiments, the frequency selective imager is a frequency selective optical imager that is used to sense photons having optical frequencies. In at least one embodiment, at least one of the nanowires in the frequency selective imager is manufactured from a compound material including Bismuth (Bi) and Tellurium (Te).

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Номер записи: 3
06-09-2012 дата публикации

Design of Filter Modules for Aperture-coded, Multiplexed Imaging Systems

Номер: US20120226480A1
Автор: Kathrin Berkner, Sapna Shroff
Принадлежит: Ricoh Co Ltd

A method for designing the spatial partition of a filter module used in an aperture-multiplexed imaging system. The filter module is spatially partitioned into filter cells, and the spatial partition is designed by considering data captured at the sensor in light of an application-specific performance metric.

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Номер записи: 4
17-01-2013 дата публикации

Passive multi-band aperture filters and cameras therefrom

Номер: US20130016220A1
Автор: Kevin L. Brown
Принадлежит: Lockheed Martin Corp

A multi-band aperture filter for optically coupling to a focal plane array (FPA) of a camera includes a substrate, and a first spectral coating on a first surface of the substrate that passes both a first longer and a second shorter wavelength band. A second spectral coating that passes the longer wavelength band and blocks the shorter wavelength band is on an outer annulus region, but not on an inner region on the first surface or a second surface of the substrate. The second spectral coating provides a larger aperture area for the longer wavelength band as compared to an aperture area for the shorter wavelength band to passively realize different F-numbers for the bands to provide substantially matched beam spot sizes on the detector array for the longer wavelength band and the shorter wavelength band, such as a long-wave infrared (LWIR) band and a mid-wave IR (MWIR) band.

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Номер записи: 5
16-05-2013 дата публикации

Recording a spectrally resolved image by reading out several partial arrays in a plurality of interferometer scans

Номер: US20130120755A1
Автор: Gerhard Joern-Hinnrich, Harig Roland
Принадлежит: BRUKER OPTIK GMBH

A method for the acquisition (AU) of a spectrally resolved, two-dimensional image by means of Fourier transform (=FT) spectroscopy or Fourier transform infrared (=FTIR) spectroscopy, is characterized in that, during multiple passes (D-D) of an optical path difference (OG) between two partial rays () over an identical range (IB), different subsets of detector elements () of an array detector () are read out and the signals of the read-out detector elements () of the multiple passes (D-D) are Fourier transformed and combined to form the spectrally resolved image. A method is thereby provided for the acquisition of two-dimensional, spectrally resolved images, in which the influence of vibrations on the measurement is reduced, and which is less affected by the movement of objects to the resolved spectrally. 1. A method for acquisition of a spectrally resolved , two-dimensional image by means of Fourier transform (=FT) spectroscopy or Fourier transform infrared (=FTIR) spectroscopy , the method comprising the steps of:a) feeding light to an interferometer, thereby splitting the light into two partial beams;b) changing an optical path difference between the two partial beams, thereby traversing an identical range several times;c) detecting the light with a two-dimensional array detector;d) reading out different subsets of detector elements of the array detector during multiple passes of the optical path difference between the two partial rays over the identical range as generated in step b); ande) Fourier transforming and combining signals of read-out detector elements of the multiple passes to form the spectrally resolved image.2. The method of claim 1 , wherein the subsets each form a respective cohesive or rectangular sub-array of detector elements of the array detector.3. The method of claim 2 , wherein the spectrally resolved image is combined using signals from non-overlapping sub-arrays of detector elements of the array detector.4. The method of claim 1 , wherein ...

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Номер записи: 6
30-05-2013 дата публикации

Chemical mapping using thermal microscopy at the micro and nano scales

Номер: US20130134310A1
Автор: Chris Kendziora, Nabil D. Bassim, Robert Andrew Mcgill, Robert Furstenberg, Viet K. Nguyen
Принадлежит: Chris Kendziora, Nabil D. Bassim, Robert Andrew Mcgill, Robert Furstenberg, Viet K. Nguyen

A non-destructive method for chemical imaging with ˜1 nm to 10 μm spatial resolution (depending on the type of heat source) without sample preparation and in a non-contact manner. In one embodiment, a sample undergoes photo-thermal heating using an IR laser and the resulting increase in thermal emissions is measured with either an IR detector or a laser probe having a visible laser reflected from the sample. In another embodiment, the infrared laser is replaced with a focused electron or ion source while the thermal emission is collected in the same manner as with the infrared heating. The achievable spatial resolution of this embodiment is in the 1-50 nm range.

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Номер записи: 7
15-08-2013 дата публикации

Optical filter device and manufacturing method for the optical filter device

Номер: US20130208359A1
Автор: Akira Sano, Yasushi Matsuno
Принадлежит: Seiko Epson Corp

An optical filter device includes an interference filter and a housing. The interference filter includes a fixed substrate, a movable substrate joined to the fixed substrate, a fixed reflective film provided on the fixed substrate, and a movable reflective film provided on the movable substrate and opposed to the fixed reflective film across an inter-reflective film gap. The housing includes a base substrate on which the interference filter is arranged. A fixing member is arranged between the movable substrate and the base substrate. The movable substrate is fixed to the base substrate by the fixing member in one place excluding a region where the movable reflective film is provided.

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Номер записи: 8
12-09-2013 дата публикации

SPECTROMETER, AND IMAGE EVALUATING UNIT AND IMAGE FORMING DEVICE INCORPORATING THE SAME

Номер: US20130235249A1
Автор: KAMIJO Naohiro, KUBOTA Yoichi, Seo Manabu, SHIMBO Kohei
Принадлежит: RICOH COMPANY, LTD.

A spectrometer includes a light source to project a light beam to a target object, a spectral element to disperse the light beam reflected by the target object and including a diffraction element to diffract the light beam, and a light receiving element to receive, at pixels, light beams with different spectral characteristics from each other dispersed by the spectral element, wherein the diffraction element and the light receiving element are integrally formed. 1. A spectrometer comprising:a light source to project a light beam to a target object;a spectral element to disperse the light beam reflected by the target object and including a diffraction element to diffract the light beam; anda light receiving element to receive, at pixels, light beams with different spectral characteristics from each other dispersed by the spectral element, whereinthe diffraction element and the light receiving element are integrally formed.2. A spectrometer according to claim 1 , wherein:the spectral element includes an optical element with an aperture through which the light beam reflected by the target object transmits, and an imaging element to image the light beam having transmitted through the optical element; andthe diffraction element, optical element, and imaging element are integrally formed.3. A spectrometer according to claim 2 , further comprising:a sub unit in which the optical element and the diffraction element are fixed in a certain relative position; anda holder to hold the light receiving element;a bonding element to bond the sub unit and the holder, whereina virtual plane including a surface of the bonding element on which the sub unit is bonded and a virtual plane including a surface of the bonding element on which the holder is bonded are orthogonal to each other.4. A spectrometer according to claim 2 , whereina sub unit in which the diffraction element and the light receiving element are fixed in a certain relative position; anda bonding element to bond the sub ...

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Номер записи: 9
12-09-2013 дата публикации

Multiband camera, and multiband image capturing method

Номер: US20130235256A1
Автор: Kenichi Kodama
Принадлежит: Nikon Corp

A multiband camera comprises: a band-pass filter having four or more optical filters; a microlens array having arrayed microlenses; a photoelectric conversion element including a plurality of pixels; and a measurement unit for measuring spectral intensity. The multiband camera satisfies the expression below, where Pl is a pitch between the microlenses, Ps is a pitch between the pixels, n is a number of pixels corresponding to one microlens, u is an effective dimension in a prescribed direction of the pixels, t is a dimension in the prescribed direction of a real image that the band-pass filter forms on a plurality of two-dimensionally arrayed pixels, Na is a number of microlenses arrayed in the prescribed direction, L is a distance from an exit pupil to the microlens, and f is a focal length of the microlens. [ Expression   14 ] ( 1 - f L )  n   Ps - 3  Ps - u - t Na ≤ Pl ≤ ( 1 - f L )  nPs + 3  Ps - u - t Na

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Номер записи: 10
26-09-2013 дата публикации

IMAGE MAPPED OPTICAL COHERENCE TOMOGRAPHY

Номер: US20130250290A1
Автор: Pierce Mark, Tkaczyk Tomasz S.
Принадлежит: William Marsh Rice University

A method for imaging a sample. The method includes, during a single acquisition event, receiving depth-encoded electromagnetic (EM) fields from points on a sample that includes a first depth-encoded EM field for a first point and a second depth-encoded EM field for a second point, and redirecting the first depth-encoded EM field along a first predetermined direction to a first location on a dispersing re-imager and the second depthencoded EM field along a second pre-determined direction to a second location on the dispersing re-imager. The method further includes spectrally dispersing the first depthencoded EM field to obtain a first spectrum, re-imaging the first spectrum onto a first location on a detector, spectrally dispersing the second depth-encoded EM field to obtain a second spectrum, re-imaging the second spectrum onto a second location on the detector, and detecting the first re-imaged spectrum and the second re-imaged spectrum. 1. A method for imaging a sample , comprising: receiving a plurality of depth-encoded electromagnetic (EM) fields from a plurality of points on a sample comprising a first depth-encoded EM field for a first point and a second depth-encoded EM field for a second point;', 'redirecting the first depth-encoded EM field along a first pre-determined direction to a first location on a dispersing re-imager and the second depth-encoded EM field along a second pre-determined direction to a second location on the dispersing re-imager;, 'during a single acquisition eventspectrally dispersing the first depth-encoded EM field to obtain a first spectrum;re-imaging the first spectrum onto a first location on a detector;spectrally dispersing the second depth-encoded EM field to obtain a second spectrum;re-imaging the second spectrum onto a second location on the detector; anddetecting the first re-imaged spectrum and the second re-imaged spectrum.2. The method of claim 1 , wherein the first depth-encoded EM field comprises a plurality of EM fields ...

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Номер записи: 11
21-11-2013 дата публикации

Sensor-synchronized spectrally-structured-light imaging

Номер: US20130308045A1
Автор: Geoffrey B. Rhoads, Tony F. Rodriguez
Принадлежит: Digimarc Corp

A smartphone is adapted for use as an imaging spectrometer, by synchronized pulsing of different LED light sources as different image frames are captured by the phone's CMOS image sensor. A particular implementation employs the CIE color matching functions, and/or their orthogonally transformed functions, to enable direct chromaticity capture. A great variety of other features and arrangements are also detailed.

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Номер записи: 12
05-12-2013 дата публикации

OPTICAL IMAGING SYSTEM THAT INCORPORATES AN UNI-AXIAL OPTICAL HOMOGENIZER

Номер: US20130321808A1
Автор: Comstock, II Lovell Elgin, Wiggins Richard Lynton
Принадлежит:

An optical imaging system (e.g., hyperspectral imaging system) is described herein which includes imaging optics, an uni-axial homogenizer (including a rectangular cross-section light pipe and an astigmatic paraxial optic), and a detector. The uni-axial homogenizer is configured to preserve imaging along one axis while homogenizing (removing all image information) along a second perpendicular axis. In one embodiment, the uni-axial homogenizer is utilized in a spectrograph of a hyperspectral imaging system where the rectangular cross-section light pipe replaces the entrance slit of the spectrograph and the astigmatic paraxial optic is built into the design of the spectrometer's optics. 1. An optical imaging system for providing an optical image of an object light source , the optical imaging system comprising:imaging optics for receiving light associated with the object light source; a rectangular cross-section light pipe positioned to receive the light associated with the object light source from the imaging optics and configured to have an entrance end, a body, and an exit end, where the entrance end has a width sized for homogenizing the received light in an X-axis, where the entrance end has a height sized for retaining spatial and angular image variations in the received light in a Y-axis, and where the body has a predetermined length in a Z-axis; and', 'an astigmatic paraxial optic positioned to receive the light associated with the object light source from the rectangular cross-section light pipe; and, 'an uni-axial homogenizer includinga detector positioned to receive the light associated with the object light source from the astigmatic paraxial optic and configured to output the optical image of the object light source.2. The optical imaging system of claim 1 , wherein the astigmatic paraxial optic is configured to have an YZ object plane that coincides with the entrance end of the rectangular cross-section light pipe claim 1 , an XZ object plane that ...

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Номер записи: 13
12-12-2013 дата публикации

Compact spectrometer for remote hydrocarbon detection

Номер: US20130327942A1
Автор: John F. Silny
Принадлежит: Raytheon Co

A multi-band imaging spectrometer and method of remote hydrocarbon gas detection using the spectrometer. One example of the multi-band imaging spectrometer includes a front objective optical system, and an optical spectrometer sub-system including a diffraction grating, the optical spectrometer sub-system configured to receive and collimate an input beam from the objective optical system to provide a collimated beam at the diffraction grating, the diffraction grating configured to disperse the collimated beam into at least two spectral bands. The spectrometer also includes a single entrance slit positioned between the objective optical system and the optical spectrometer sub-system and configured to direct the input beam from the objective optical system to the optical spectrometer sub-system, and a single focal plane array optically coupled to the diffraction grating and configured to produce an image from the at least two spectral bands.

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Номер записи: 14
26-12-2013 дата публикации

Portable system for detecting explosive materials using near infrared hyperspectral imaging and method for using thereof

Номер: US20130341509A1
Автор: Charles Gardner, Jr., Matthew Nelson, Patrick Treado
Принадлежит: ChemImage Corp

The present disclosure provides for a portable device for detecting the presence of explosive materials, including bulk explosive materials and out-gassed by products of explosive materials. The portable device may comprise a tunable filter and a NIR detector, configured so as to generate a NIR hyperspectral image representative of a target. The portable device may also comprise a RGB detector configured to generate a video image of a region of interest. The disclosure also provides for a method of detecting explosive materials using NIR hyperspectral imaging which may comprise collecting interacted photons, passing the interacted photons through a tunable filter, and detecting the interacted photons to generate a NIR hyperspectral image representative of a target. The method may also comprise surveying a region of interest using a RGB detector to identify a target for further inspection using NIR hyperspectral imaging.

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Номер записи: 15
27-02-2014 дата публикации

CAMERA SYSTEM FOR CAPTURING TWO-DIMENSIONAL SPATIAL INFORMATION AND HYPER-SPECTRAL INFORMATION

Номер: US20140055784A1
Автор: Kremer Richard M., SALVADOR Mark
Принадлежит: Logos Technologies, LLC

An spectrometer having a first lens, a perforated focal plane mask having a front surface and rear surface and a plurality of perforations, the first lens configured to focus incoming radiation onto a front surface of the focal plane mask, each of the perforations of the focal plane mask causing a radiation beam that is emitted from the rear surface of the focal plane mask, a dispersing element receiving the radiation beams and configured to disperse each of the radiation beams into dispersed radiation beams, a second lens, and a focal plane array, the second lens configured to focus the dispersed radiation beams onto the focal plane array. 1. An optical system comprising:a first lens;a perforated focal plane mask having a front surface and rear surface and a plurality of perforations, the first lens configured to focus incoming radiation onto a front surface of the focal plane mask, each of the perforations of the focal plane mask causing a radiation beam that is emitted from the rear surface of the focal plane mask;a dispersing element receiving the radiation beams and configured to disperse each of the radiation beams into dispersed radiation beams;a second lens; anda focal plane array, the second lens configured to focus the dispersed radiation beams onto the focal plane array.2. The optical system according to claim 1 , further comprising:a microlens array located between the first lens and the focal plane mask, each microlens of the microlens array associated with a respective perforation of the focal plane mask, each microlens configured to focus incoming radiation onto a corresponding perforation.3. The optical system according to claim 1 , wherein{'sub': 1', '1, 'the perforated focal plane mask has a matrix of perforations with dimensions nto m,'}{'sub': 2', '2, 'the focal plane array has a pixel resolution of nto m,'}the dispersing element defines a main dispersion direction,{'sub': 1', '2, 'the dimension nand the resolution nextending substantially ...

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Номер записи: 16
27-03-2014 дата публикации

Active Hyperspectral Imaging Systems

Номер: US20140085629A1
Автор: Bodkin Andrew, McCann James T.
Принадлежит: Bodkin Design & Engineering, LLC

An active hyperpixel array imaging system including a hyperspectral analyzer; an active spatial light modulator dynamically configurable to direct light, from at least a portion of a field of view of the hyperpixel array imaging system, towards the hyperspectral analyzer for capture of a two-dimensional image including spectral information; and imaging optics for forming an intermediate image, of the field of view on the active spatial light modulator. A method for performing spectral analysis of a field of view, the method including forming an intermediate image of the field of view on an active spatial light modulator; directing light from at least a portion of the field of view, using an active spatial light modulator, towards a hyperspectral analyzer; and capturing a hyperspectral image of the portion of the field of view, using the hyperspectral analyzer, the hyperspectral image including spectral information for the portion of the field of view. 1. An active hyperpixel array imaging system comprisinga hyperspectral analyzer;an active spatial light modulator dynamically configurable to direct light, from at least a portion of a field of view of the hyperpixel array imaging system, towards the hyperspectral analyzer for capture of a two-dimensional image comprising spectral information; andimaging optics for forming an intermediate image, of the field of view on the active spatial light modulator.2. The system of claim 1 , the two-dimensional image further comprising spatial information to form a hyperspectral image.3. The system of claim 2 , the hyperspectral analyzer further comprising:a dispersive optic for spectrally dispersing light to generate spectral information; anda focal plane array for capturing the two dimensional image.4. The system of claim 3 , the hyperspectral analyzer imaging a spectrum of light claim 3 , directed thereto from a point on the active spatial light modulator claim 3 , onto a line on the focal plane array.5. The system of claim 1 , ...

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Номер записи: 17
27-03-2014 дата публикации

Pixel-Shifting Spectrometer on Chip

Номер: US20140085632A1
Автор: Nitkowski Arthur, Preston Kyle
Принадлежит:

Various embodiments of apparatuses, systems and methods are described herein for implementing pixel-shifting or an interpixel shift to increase the effective dispersion and effective spectral resolution of a spectrometer in a manner which is faster, less complicated and more robust compared to conventional techniques that employ mechanical motion to implement pixel-shifting in a spectrometer that uses free space optical components. 1. A spectrometer comprising:a dispersive element configured to generate a plurality of spatially separated spectral components from a received optical signal, the dispersive element being fabricated on a chip;a detector array coupled to the dispersive element to capture a plurality of narrowband optical signals from the plurality of spatially separated spectral components and generate output samples thereof; anda tuning element configured to change a property of the spectrometer in different states of operation in order to shift the plurality of narrowband optical signals in wavelength to increase an effective number of output samples generated by the detector array when the spectrometer is used in more than one state of operation.2. The spectrometer of claim 1 , wherein the tuning element is a heating element that creates a refractive index shift in the dispersive element by changing a temperature of the dispersive element by an appropriate amount to achieve a desired wavelength shift.3. The spectrometer of claim 2 , wherein the heating element comprises a localized integrated heating element or a thermoelectric cooler.4. The spectrometer of claim 1 , wherein the tuning element is configured to apply one of an electric field claim 1 , a magnetic field or a change in electron-hole concentration to the dispersive element to create a refractive index shift in the dispersive element in order to shift the plurality of narrowband optical signals in wavelength.5. The spectrometer of claim 1 , wherein the tuning element is configured to change ...

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Номер записи: 18
03-04-2014 дата публикации

APPARATUS AND METHOD FOR OBTAINING SPECTRAL IMAGE

Номер: US20140092390A1
Автор: Watanabe Toshiaki
Принадлежит: OLYMPUS CORPORATION

An apparatus for obtaining spectral image includes a variable spectral element capable of changing its spectral characteristics, a transmission wavelength setting unit for setting a wavelength of light to be transmitted by the variable spectral element, a variable spectral element control unit changing a first control of the variable spectral element and a second control of the variable spectral element for controlling spectral characteristics of the variable spectral element to each other, an image capturing unit capturing an image that is formed by light transmitted by the variable spectral element, and an image correction unit acquiring a difference image between a first image captured in the first control and a second image captured in the second control. 1. An apparatus for obtaining spectral image comprisinga variable spectral element having a pair of optical substrates that are placed opposite each other on an optical path of light from an object to be photographed, the variable spectral element being capable of changing its spectral characteristics by changing at least one of a distance between surfaces of the optical substrates and angles of inclinations of the optical substrates,a transmission wavelength setting unit for setting a wavelength of light to be transmitted by the variable spectral element in a range of wavelengths of light from the object,a variable spectral element control unit changing a first control of the variable spectral element and a second control of the variable spectral element to each other by changing a distance between the surfaces of the optical substrates or angles of inclinations of the optical substrates, the variable spectral element being controlled in the first control to have a transmission peak that exists near a wavelength set by the transmission wavelength is setting unit, as its spectral characteristic, and the variable spectral element being controlled in the second control to have a transmission peak that does not ...

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Номер записи: 19
07-01-2016 дата публикации

SYSTEMS AND METHODS FOR SPECTRALLY DISPERSED ILLUMINATION OPTICAL COHERENCE TOMOGRAPHY

Номер: US20160000320A1
Автор: SCHMOLL Tilman, SHARMA Utkarsh, Wei Xing
Принадлежит: Carl Zeiss Meditec, Inc.

Systems and methods are presented for acquisition and processing of spectrally dispersed illumination optical coherence tomographic data. Light from a source is distributed spectrally on the sample, and each acquisition simultaneously provides partial spectral interference information from multiple locations in the sample. Thus for a given spatial point, a single observation will be of a partial spectrum A-scan. When multiple partial spectrum A-scan observations are made at the same point by shifting the spectrum of light on to the tissue, the point can be observed by the entire broadband spectrum of the light source, thereby making it possible to create a full axial resolution A-scan. 1. An optical coherence tomographic system to image a sample , comprising:a light source for generating a beam of light, which is divided into a reference arm light and a sample arm light;an optical train in the sample arm containing a spectral disperser for dispersing the beam-of-light into a spectrum and laterally translating the spectrum along said sample in a direction parallel to the spread of the spectrum such that spatial points of said sample can be illuminated by at least two distinct portions of said spectrum by the translation of said spectrum with respect to the sample;an interferometer including a detector, for interfering back-reflected light from said spatial points with reference arm light to yield two or more partial spectrum A-scans; anda processor, for combining the two or more partial spectrum A-scans each obtained with distinct portions of said spectrum at a given spatial point into a combined A-scan.2. A system as recited in wherein the spectral disperser can be rotated.3. A system as recited in in which the spectral disperser is selected from the group consisting of dispersing transmission prism claim 1 , dispersing reflection prism claim 1 , reflection grating claim 1 , transmission grating claim 1 , grism claim 1 , spectrally dispersing fiber or fibers claim 1 ...

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Номер записи: 20
06-01-2022 дата публикации

Multicolor Optical Resonator For Imaging Methods

Номер: US20220003604A1
Автор: Hayden Oliver, Iglev Hristo, Kienberger Reinhard, Riemensberger Johann, Schletter Albert, Wurzer Markus
Принадлежит:

Disclosed herein is a device () for multicolor optical imaging of a sample () with wavelength-dependent optical path length enhancement, the device () comprising an optical resonator () for enhancing an optical path length, wherein the optical resonator () has a first finesse at a first wavelength and a second finesse at a second wavelength; a sample holder () for mounting the sample () in the optical resonator (), wherein the sample holder () is configured to hold the sample () such that an optical axis () of the optical resonator () intersects with the sample ();a first imaging system () for imaging the sample () at the first wavelength with a first imaging technique, and a second imaging system () for imaging the sample () at the second wavelength with a second imaging technique, wherein the second wavelength is different from the first wavelength; wherein the first finesse and the second finesse are chosen such that the optical resonator () enhances a first image quality indicator of the imaging with the first imaging system () and a second image quality indicator of the imaging with the second imaging system (). 1. A device for multicolor optical imaging of a sample with wavelength-dependent optical path length enhancement , the device comprising:an optical resonator for enhancing an optical path length, wherein the optical resonator has a first finesse at a first wavelength and a second finesse at a second wavelength;a sample holder for mounting the sample in the optical resonator, wherein the sample holder is configured to hold the sample such that an optical axis of the optical resonator intersects with the sample;a first imaging system for imaging the sample at the first wavelength with a first imaging technique, wherein the imaging is performed along an outgoing optical axis of the optical resonator; anda second imaging system for imaging the sample at the second wavelength with a second imaging technique, wherein the imaging is performed along an outgoing ...

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Номер записи: 21
06-01-2022 дата публикации

SCANNING PROBE HAVING MICRO-TIP, METHOD AND APPARATUS FOR MANUFACTURING THE SAME

Номер: US20220003799A1
Автор: GAO SI-TIAN, Li Wei, ZHU ZHEN-DONG
Принадлежит:

The present disclosure provides a scanning probe, a method and an apparatus for manufacturing the scanning probe. The scanning probe includes a base and a micro-tip disposed on an end of the base, wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix. In the method, an end of a probe precursor is immersed in a corrosive solution by having a length direction of the probe precursor inclined with a liquid surface of the corrosive solution. The probe precursor is corroded by the corrosive solution while a corrosion current of the corroding is monitored. The probe precursor is moved away from the corrosive solution after a magnitude of the corrosion current has a plunge. The apparatus includes a container containing the corrosive solution, and a driving device configured to move the probe precursor in the container through a fastener. 1. A scanning probe comprising:a base; anda micro-tip disposed on an end of the base,wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix; and the micro-tip comprises diameter-changing sections, and the micro-tip comprises a converged lateral tip, a converged lateral edge, or a combination thereof disposed between the diameter-changing sections.2. The scanning probe of claim 1 , wherein the diameter-changing sections comprises a first diameter-changing section claim 1 , a second diameter-changing section claim 1 , and a distal section.3. The scanning probe of claim 2 , wherein two opposite ends of the second diameter-changing section respectively connect the first diameter-changing section and the distal section.4. The scanning probe of claim 3 , wherein the first diameter-changing section is adjacent to the base claim 3 , and the second diameter-changing section is adjacent to the distal section.5. The scanning probe of claim 2 , wherein the distal section has a ball shape or an ellipsoid shape.6. The scanning probe of claim 1 , ...

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Номер записи: 22
01-01-2015 дата публикации

IMAGE CAPTURE DEVICE AND ELECTRONIC APPARATUS

Номер: US20150002843A1
Автор: Yokogawa Sozo
Принадлежит:

There is provided an image capture device including a narrow-band optical irradiation system including a light source, a solid-state imaging element including an array of pixels and sensitive to a predetermined range of wavelengths, and a metal thin-film filter provided in an optical path between the optical irradiation system and the solid-state imaging element, and having a periodic microstructural pattern having a period shorter than a wavelength detected by the solid-state imaging element. 1. An image capture device comprising:a narrow-band optical irradiation system including a light source;a solid-state imaging element including an array of pixels and sensitive to a predetermined range of wavelengths; anda metal thin-film filter provided in an optical path between the optical irradiation system and the solid-state imaging element, and having a periodic microstructural pattern having a period shorter than a wavelength detected by the solid-state imaging element.2. The image capture device according to claim 1 , whereinthe metal thin-film filter has a property that a spectral distribution of transmitted light is shifted in a wavelength direction due to a difference between the refractive index of a target object tightly attached or located close to the metal thin-film filter and a refractive index of a medium with which a space around the metal thin-film filter is filled, andthe image capture device further includes a signal processor configured to detect a change in signal intensity of the solid-state imaging element, the change in signal intensity corresponding to a change in transmission efficiency corresponding to the shift of the spectral distribution of transmitted light in the wavelength direction.3. The image capture device according to claim 2 , whereinthe metal thin-film filter is a thin film of an elemental metal or an alloy and having a thickness of 500 nm or less.4. The image capture device according to claim 3 , whereinthe metal thin-film filter ...

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Номер записи: 23
05-01-2017 дата публикации

Infrared Imaging System with Automatic Referencing

Номер: US20170003166A1
Автор: Ghetler Andrew, Kleczewski Adam, Tella Richard P.
Принадлежит: AGILENT TECHNOLOGIES, INC.

A method and apparatus for obtaining reference samples during the generation of a mid-infrared (MW) image without requiring that the sample being imaged be removed is disclosed. A tunable MIR laser generates a light beam that is focused onto a specimen on a specimen stage that moves the specimen in a first direction. An optical assembly includes a scanning assembly having a focusing lens and a mirror that moves in a second direction, different from the first direction, relative to the stage such that the focusing lens maintains a fixed distance between the focusing lens and the specimen stage. A light detector measures an intensity of light leaving the point on the specimen. A controller forms an image from the measured intensity. A reference stage is positioned such that the mirror moves over the reference stage in response to a command so that the controller can also make a reference measurement. 1. An apparatus comprising:a tunable mid-infrared (MIR) laser that generates a light beam;a specimen stage adapted to carry a specimen to be scanned, said stage moving said specimen in a first direction;an optical assembly that focuses said light beam to a point on said specimen, said optical assembly comprises a scanning assembly having a focusing lens that focuses said light beam to a point on said specimen and a mirror that moves in a second direction relative to said stage such that said focusing lens maintains a fixed distance between said focusing lens and said specimen stage, said first direction being different from said second direction.a first light detector that measures a first intensity of light leaving said point on said specimen;a controller that forms a MIR image from said first intensity of light; anda reference stage positioned such that said mirror moves over said reference stage in response to a command from said controller.2. The apparatus of wherein said first direction is substantially orthogonal to second direction.3. The apparatus of wherein said ...

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Номер записи: 24
05-01-2017 дата публикации

IMAGING DEVICE PROVIDED WITH LIGHT SOURCE THAT EMITS PULSED LIGHT AND IMAGE SENSOR

Номер: US20170003168A1
Автор: Ando Takamasa, Fujii Toshiya
Принадлежит:

An imaging device according to an aspect of the present disclosure is provided with: a light source that, in operation, emits pulsed light including components of different wavelengths; an encoding element that has regions each having different light transmittance, through which incident light from a target onto which the pulsed light has been irradiated is transmitted; a spectroscopic element that, in operation, causes the incident light transmitted through the regions to be dispersed into light rays in accordance with the wavelengths; and an image sensor that, in operation, receives the light rays dispersed by the spectroscopic element. 1. An imaging device , comprising:a light source that, in operation, emits pulsed light including components of different wavelengths;an encoding element that has regions each having different light transmittance, through which incident light from a target onto which the pulsed light has been irradiated is transmitted;a spectroscopic element that, in operation, causes the incident light transmitted through the regions to be dispersed into light rays in accordance with the wavelengths; andan image sensor that, in operation, receives the light rays dispersed by the spectroscopic element.2. An imaging device , comprising:a light source that, in operation, emits pulsed light including components of different wavelengths;an encoding spectroscopic element that has regions each having different wavelength distributions of light transmittance, through which incident light from a target onto which the pulsed light has been irradiated is transmitted; andan image sensor that, in operation, receives the incident light transmitted through the regions.3. The imaging device according to claim 1 , further comprising:a control circuit, wherein:the target has a first portion and a second portion; andthe control circuit,at a first time, causes the light source to emit the pulsed light,at a second time subsequent to the first time, causes the image ...

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Номер записи: 25
07-01-2016 дата публикации

SELECTIVE WAVELENGTH IMAGING SYSTEMS AND METHODS

Номер: US20160003675A1
Автор: ABOLBASHARI Mehrdad, FARAHI Faramarz
Принадлежит: UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE

The present disclosure provides wavelength discriminating imaging systems and methods that spatially separate (over different depths) the wavelength constituents of an image using a dispersive element or lens, such that this spectral information may be exploited and used. The wavelength constituents of an image are deconstructed and identified over different depths using the dispersive element or lens. 1. A spectral imaging system , comprising:a dispersive element operable for separating wavelengths associated with an image by distance; anda sensor operable for determining a given wavelength from the separated wavelengths using the distance.2. The spectral imaging system of claim 1 , wherein the dispersive element comprises a lens and a dispersive medium.3. The spectral imaging system of claim 2 , wherein the dispersive medium comprises a dispersive lens.4. The spectral imaging system of claim 1 , wherein the dispersive element comprises a plurality of lenses separated by a dispersive medium.5. The spectral imaging system of claim 1 , further comprising one of a camera and a light field camera.6. The spectral imaging system of claim 1 , further comprising an imaging system.7. The spectral imaging system of claim 1 , further comprising a confocal system.8. The spectral imaging system of claim 1 , further comprising a microlens array.9. The spectral imaging system of claim 1 , further comprising a lens array having varying focal lengths.10. The spectral imaging system of claim 1 , further comprising a lens array having varying displacements with respect to a lens array plane.11. The spectral imaging system of claim 1 , further comprising a lens and one or more beamsplitters operable for dividing a beam from the lens into a plurality of beams.12. The spectral imaging system of claim 1 , further comprising one or more filters operable for separating wavelengths.13. The spectral imaging system of claim 1 , further comprising a profilometry algorithm operable for ...

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Номер записи: 26
07-01-2021 дата публикации

PHOTOTHERMAL IMAGING DEVICE AND SYSTEM

Номер: US20210003504A1
Автор: Hartland Gregory, Kuno Masaru Ken, Li Zhongming
Принадлежит:

Mid-infrared photothermal heterodyne imaging (MIR-PHI) techniques described herein overcome the diffraction limit of traditional MIR imaging and uses visible photodiodes as detectors. MIR-PHI experiments are shown that achieve high sensitivity, sub-diffraction limit spatial resolution, and high acquisition speed. Sensitive, affordable, and widely applicable, photothermal imaging techniques described herein can serve as a useful imaging tool for biological systems and other submicron-scale applications. 1. A method for detecting infrared light absorption in a sample with submicron resolution , the method comprising the steps:a) illuminating a region of the sample with a pump beam having a first wavelength generated by a first light source, wherein at least a portion of the pump beam is absorbed by the region of the sample;b) illuminating the region of the sample with a probe beam having a second wavelength generated by a second light source, wherein the second wavelength is different than the first wavelength;c) collecting, by a detector, a portion of the probe beam coming from the region of the sample; and wherein the pump beam travels along a first pathway toward the region of the sample,', 'wherein the probe beam travels along a second pathway toward the region of the sample, and', 'wherein the first pathway does not intersect with the second pathway., 'd) analyzing the collected light to construct a signal indicative of infrared absorption by the region of the sample with submicron spatial resolution,'}2. The method according to claim 1 , wherein analyzing the collected light comprises the steps:generating, based on at least one property of the collected light and the second wavelength, a signal indicative of the portion of the pump beam absorbed by the region of the sample, wherein the signal represents an amount of infrared light absorbed by the region of the sample.3. The method according to claim 1 , further comprising the step of repeating steps (a)-(d) at ...

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Номер записи: 27
03-01-2019 дата публикации

MEASUREMENT DEVICE, ELECTRONIC APPARATUS, AND MEASUREMENT METHOD

Номер: US20190003889A1
Автор: KANAI Masashi, Kasahara Hideaki
Принадлежит:

A spectroscopic camera includes a wavelength variable interference filter, and an image sensor that receives light which is transmitted through the wavelength variable interference filter. Measurement is implemented a plurality of times by causing measurement light to be incident to the wavelength variable interference filter and changing the wavelength of light that is transmitted by the wavelength variable interference filter. Reflectance based on the intensity of light when a first pixel of the image sensor receives light of a target wavelength, is predicted in the respective plurality of repetitions of measurement on the basis of a light reception central wavelength of light that the first pixel receives, and reflectance that is calculated on the basis of the intensity of light that is received by the first pixel. 1. A measurement device comprising:a spectroscopic element; andan image capturing element that includes a plurality of pixels,the image capturing element receiving light that is dispersed by the spectroscopic element,a difference between a first wavelength that is a wavelength of light that is incident to a predetermined reference pixel, and a second wavelength that is a wavelength of light that is incident to one of the plurality of pixels, being calculated based on each image capture result when images of a plurality of reference subjects are captured by the image capturing element.2. The measurement device according to claim 1 ,each of the reference subjects having known reflectances.3. The measurement device according to claim 1 ,a first reference subject among the plurality of reference subjects having a first reflectance, and a second reference subject among the plurality of reference subjects having a second reflectance different from the first reflectance.4. The measurement device according to claim 1 ,the difference being calculated using a least squares technique.5. The measurement device according to claim 1 , further comprising:a controller ...

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Номер записи: 28
03-01-2019 дата публикации

MEASUREMENT DEVICE, ELECTRONIC APPARATUS, AND MEASUREMENT METHOD

Номер: US20190003890A1
Автор: KANAI Masashi, Kasahara Hideaki
Принадлежит:

A spectroscopic camera includes a wavelength variable interference filter, and an image sensor that receives light which is transmitted through the wavelength variable interference filter. Measurement is implemented a plurality of times by causing measurement light to be incident to the wavelength variable interference filter and changing the wavelength of light that is transmitted by the wavelength variable interference filter. Reflectance based on the intensity of light when a first pixel of the image sensor receives light of a target wavelength, is predicted in the respective plurality of repetitions of measurement on the basis of a light reception central wavelength of light that the first pixel receives, and reflectance that is calculated on the basis of the intensity of light that is received by the first pixel. 1. A measurement device comprising:a spectroscopic element that disperses light of a predetermined wavelength among incidence light, and that is capable of changing a wavelength of light that is dispersed; andan image capturing element that receives light that is dispersed by the spectroscopic element, and includes a plurality of pixels,wherein measurement is implemented a plurality of times by causing measurement light to be incident to the spectroscopic element and changing the wavelength of light that is dispersed by the spectroscopic element, and an optical association value when a first pixel, among the plurality of pixels in the respective plurality of repetitions of measurement, receives light of a first wavelength, is predicted on the basis of a light reception central wavelength of light that the first pixel receives, and the optical association value based on light of the light reception central wavelength that is received by the first pixel.2. The measurement device according to claim 1 , further comprising:a prediction unit that predicts the optical association value when the first pixel receives the first wavelength by interpolating a ...

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Номер записи: 29
03-01-2019 дата публикации

Enhanced co-registered optical systems

Номер: US20190003891A1
Автор: Thomas A. Mitchell
Принадлежит: Wavefront Research Inc

An imaging optical system including a plurality of imaging optical sub-systems, each having at least one optical element and receiving light from a source, and a plurality of spectrometer optical sub-systems, each spectrometer optical sub-system receiving light from at least one of the imaging optical sub-systems, each imaging optical sub-system and spectrometer optical sub-system combination having a spatial distortion characteristic, each spatial distortion characteristic having a predetermined relationship to the other spatial distortion characteristics.

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Номер записи: 30
13-01-2022 дата публикации

ONLINE ANALYZER FOR BIOFUEL PRODUCTION

Номер: US20220010219A1
Автор: Aguinaldo Maria Vanessa C., Cady Samuel J., Della Mora John, Luo Shifang, Ream Kegun L., Ring Michael H., WANG Chengrong, XU Xiaochun, Zhang Anding
Принадлежит:

Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer. 1. A method of processing a biofeedstock , comprising:hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock;monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer; andcontrolling recycle of the hydrotreated biofeedstock to the hydrotreating in response to the monitoring conversation of the biofeedstock.2. The method of claim 1 , wherein the biofeedstock comprises at one component selected from the group consisting of a vegetable oil claim 1 , an animal fat claim 1 , a fish oil claim 1 , a pyrolysis oil claim 1 , algae lipid claim 1 , an algae oil claim 1 , and combinations thereof.3. The method of claim 1 , wherein the biofeedstock comprises lipid compounds.4. The method of claim 1 , wherein the hydrotreated biofeedstock comprises paraffin products.5. The method of claim 1 , wherein the online analyzer comprises a spectrometer.6. The method of claim 1 , wherein the online analyzer is an infrared spectrometer claim 1 , a near infrared spectrometer claim 1 , or a Raman spectrometer.7. The method of claim 1 , wherein the monitoring conversion of the biofeedstock comprises determining oxygen removal from the biofeedstock.8. The method of claim 1 , wherein the monitoring conversion comprises correlating measurements from the online analyzer with conversion of the biofeedstock.9. The method of claim 1 , wherein the monitoring conversion comprises measuring carbonyl group concentration in the hydrotreated biofeedstock.10. The method of claim 1 , wherein the online analyzer is ...

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Номер записи: 31
07-01-2021 дата публикации

COMPACT DUAL-BAND SENSOR

Номер: US20210003830A1
Автор: Koehler Elka E.
Принадлежит:

Dual-band optical imaging systems and methods. One example of a dual-band optical system includes an all-reflective shared optical sub-system configured to receive combined optical radiation including first optical radiation having wavelengths in a first waveband and second optical radiation having wavelengths in a second, different waveband, and an optical element positioned to receive the combined optical radiation from the all-reflective shared optical sub-system and having a dichroic coating configured to transmit the first optical radiation and to reflect the second optical radiation, the optical element being configured to transmit the first optical radiation toward a first focal plane and to reflect and focus the second optical radiation to a second focal plane. The all-reflective shared optical sub-system and the optical element are each positioned symmetrically about a primary optical axis extending between the first focal plane and the second focal plane. 1. A dual-band optical system comprising:an all-reflective shared optical sub-system configured to receive combined optical radiation including first optical radiation having wavelengths in a first waveband and second optical radiation having wavelengths in a second waveband different from the first waveband; andan optical element positioned to receive the combined optical radiation from the all-reflective shared optical sub-system and having a dichroic coating configured to transmit the first optical radiation and to reflect the second optical radiation, the optical element being configured to transmit the first optical radiation toward a first focal plane and to reflect and focus the second optical radiation to a second focal plane,wherein the all-reflective shared optical sub-system and the optical element are each positioned symmetrically in a first dimension about a primary optical axis extending along a second dimension between the first focal plane and the second focal plane, the first and second ...

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Номер записи: 32
07-01-2021 дата публикации

UNOBSCURED TWO-MIRROR CATADIOPTRIC OPTICAL SYSTEM FOR A MULTISPECTRAL IMAGING APPARATUS

Номер: US20210003833A1
Автор: Greenland Alan, Jelen Christopher, Larsen Matthew, Pruss Robin, Wang Shu-i
Принадлежит:

An optical system in which an aggressively compact reflective front end is combined with beam splitting elements and refractive relay optics to allow several imaging systems working in widely different wavelength bands to share a common aperture. The aggressively compact design results in significant field curvature at the uncorrected intermediate or virtual focus, which is corrected in the refractive relay optics for each band's imaging path. 1. An optical system for a multispectral imaging apparatus , the optical system comprising:a primary mirror including a concave reflecting surface, the concave reflecting surface being an off-axis portion of a first mirror shape having a first optical axis;a secondary mirror including a convex reflecting surface oriented to receive light reflected from the concave reflecting surface of the primary mirror, the convex reflecting surface being an off-axis portion of a second mirror shape having a second optical axis laterally offset and tilted relative to the first optical axis;a first beam splitter oriented to receive light from the secondary mirror, the first beam splitter being configured to direct a first spectral band along a first path, and to direct a second spectral band along a second path;first refractive relay optics including a first plurality of refractive elements having respective optical axes oriented along the first path;second refractive relay optics including a second plurality of refractive elements having respective optical axes oriented along the second path;a first sensor positioned to receive light in the first spectral band from the first plurality of refractive elements;a second sensor positioned to receive light in the second spectral band from the second plurality of refractive elements;wherein the primary and secondary mirrors are configured such that a ratio of an equivalent diameter of an aperture of the primary mirror to the separation between the primary and secondary mirrors is greater than or ...

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Номер записи: 33
03-01-2019 дата публикации

Systems and methods for monitoring remote installations

Номер: US20190003984A1
Автор: Margarita Sergeyevna Odintsova, Robert Timothy Kester
Принадлежит: Rebellion Photonics Inc

A system for monitoring a petrochemical installation is disclosed. The system can include an optical imaging system comprising an array of optical detectors. The system can comprise processing electronics configured to process image data detected by the optical imaging system. The processing electronics can be configured to detect a target species based at least in part on the processed image data. The processing electronics can further be configured to, based on a detected amount of the target species, transmit an alarm notification to an external computing device over a communications network indicating that the target species has been detected at the petrochemical installation.

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Номер записи: 34
07-01-2021 дата публикации

FOLIAR SAMPLING SYSTEM AND METHOD OF USE

Номер: US20210004593A1
Автор: Fisher Michelle
Принадлежит:

A foliage analysis system allows a farmer or another agricultural worker to obtain real-time or near real-time measurements of the health of plants or crops to take precise action to care for them. A machine with a spectrometer is used to evaluate a sample taken from a plant or field and then provide spectroscopy to a computer algorithm to determine the condition of the sample. The system also takes aerial spectral imagery to be used in conjunction with onsite handheld spectral measurements to determine the nutrients in the plants or the diseases afflicting them. 1. A foliage analysis system comprising:at least one spectrometer controlled by a chassis and a computer;at least one tray of leaves/foliage;at least one light source; andat least one fiber optic cable;wherein the at least one chassis and computer assist the spectrometer to measure the leaves/foliage in the at least one tray thereof via light waves; andwherein the computer provides an analysis of the spectral measurements using one or more algorithms.2. The system of wherein the chassis and computer are mobile.3. The system of wherein the chassis and computer are handheld.4. The system of wherein the at least one camera provides imagery to compliment the spectral measurement.5. The system of wherein the computer exports spectral measurement data to a cloud-based computer for processing and generation of results reports.6. A method of establishing the health of a crop claim 1 , comprising:deploying a mobile chassis with a spectrometer;measuring a field, vineyard or orchard in whole or part; ordeploying a handheld spectrometer;measuring leaves or foliage from a plant or local plants;transmitting the measurements to a handheld computer;if additional measurements are needed determining the type and deploy the mobile chassis or handheld scanner; orif no additional measurements are needed applying a treatment to the entire crop or local area. The present invention relates generally to foliar sampling systems and ...

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Номер записи: 35
13-01-2022 дата публикации

Image sensor with large dynamic range

Номер: US20220013571A1
Автор: Peiyan CAO, Yurun LIU
Принадлежит: Shenzhen Genorivision Technology Co Ltd

Disclosed herein is an image sensor comprising an array of APDs, an electronic system configured to individually control reverse biases on the APDs based on intensities of light incident on the APDs.

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Номер записи: 36
04-01-2018 дата публикации

Method and apparatus for using a regionally specific spectral model to identify the spectral bands for use for isolating remotely sensed materials of interest

Номер: US20180007288A1
Автор: Anthony W. Baker, Robert J. Klein
Принадлежит: Boeing Co

A system and method for collecting spectral data of a region of interest with a sensor is described. In one embodiment, the method comprises generating a simulated spectral representation of a region of interest, identifying at least one of the plurality of materials as a material of interest within the region of interest, identifying other of the plurality of materials not identified as a material of interest as background materials within the region of interest, selecting a subset spectral portion of the spectral data according to the simulated spectral representation of the material of interest and the simulated spectral representation of the background materials within the region of interest, and configuring the sensor to collect a subset spectral portion of the spectral data.

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Номер записи: 37
02-01-2020 дата публикации

SPECTRAL CHARACTERISTIC ACQUISITION DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING APPARATUS MANAGEMENT SYSTEM

Номер: US20200007694A1
Автор: KUBOTA Yoichi, SHIMBO Kohei, Taneda Yusuke
Принадлежит: RICOH COMPANY, LTD.

A spectral characteristic acquisition device according to one aspect of the disclosed technique includes: a color data acquirer comprising a plurality of spectral sensors receiving light reflected from an object irradiated with light and acquiring color data of the object; circuitry configured to estimate a spectral characteristic of the object on a basis of the color data and calibrate the spectral characteristic calculator on a basis of the color data obtained from a calibration color mark having a color mark of a known spectral characteristic; a first conveyer configured to convey the object in a predetermined conveyance direction and conveying the color data acquirer in a direction intersecting the predetermined conveyance direction; and a second conveyer configured to convey the calibration color mark in the predetermined conveyance direction. 1. A spectral characteristic acquisition device comprising:a color data acquirer including a plurality of spectral sensors receiving light reflected from an object irradiated with light and acquiring a color data of the object;circuitry configured to:estimate a spectral characteristic of the object on a basis of the color data, andcalibrate the spectral characteristic calculator on a basis of the color data obtained from a calibration color mark having a color mark of a known spectral characteristica first conveyer configured to convey the object in a predetermined conveyance direction and to convey the color data acquirer in a direction intersecting the predetermined conveyance direction; anda second conveyer configured to convey the calibration color mark in the predetermined conveyance direction.2. The spectral characteristic acquisition device according to claim 1 , wherein the circuitry estimates the spectral characteristic of the object on a basis of the color data with a use of a conversion matrix set in advance claim 1 , and calibrates the conversion matrix on a basis of the color data obtained from the ...

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Номер записи: 38
12-01-2017 дата публикации

SPECTROSCOPIC MAPPING SYSTEM AND METHOD

Номер: US20170010153A1
Автор: FINAMORE Beth, Goldstone Jeremy, VERRIER Gregoire, VEZARD Nicolas
Принадлежит: HORIBA INSTRUMENTS INCORPORATED

A system and method for spectroscopic mapping, with configurable spatial resolution, of an object include a fiber optic bundle having a plurality of optical fibers arranged in a first array at an input end with each of the plurality of optical fibers spaced one from another and arranged in at least one linear array at an output end. A first mask defining a plurality of apertures equal to or greater in number than the plurality of optical fibers is positioned between an object to be imaged and the input end of the fiber optic bundle. An imaging spectrometer is positioned to receive light from the output end of the fiber optic bundle and to generate spectra of the object. A sensor associated with the imaging spectrometer converts the spectra to electrical output signals for processing by an associated computer. 1. A system for spectroscopic mapping of an object , the system comprising:a fiber optic bundle having a plurality of optical fibers arranged in a first array at an input end and arranged in at least one linear array at an output end;a first mask defining a plurality of apertures, the plurality of apertures equal to or greater in number than the plurality of optical fibers, the first mask disposed between an object to be imaged and the input end of the fiber optic bundle;an imaging spectrometer positioned to receive light from the output end of the fiber optic bundle and to generate spectra of the object; anda sensor associated with the imaging spectrometer that converts the spectra to electrical output signals.2. The system of wherein each of the plurality of optical fibers includes a core surrounded by a cladding and wherein the plurality of optical fibers are spaced one from another at the input end of the fiber optic bundle such that the cladding of each fiber does not contact the cladding of any other fiber.3. The system of wherein the plurality of fibers is arranged at the output end such that the cladding of each fiber contacts the cladding of at least ...

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Номер записи: 39
12-01-2017 дата публикации

SYSTEM AND METHOD FOR CALIBRATING IMAGING MEASUREMENTS TAKEN FROM AERIAL VEHICLES

Номер: US20170010155A1
Автор: Milton Michael, Ritter Michael
Принадлежит:

Systems and methods are provided for calibrating spectral measurements taken of one or more targets from an aerial vehicle. Multiple photo sensors may be configured to obtain spectral measurements of one or more ambient light sources. The obtained spectral measurements of the one or more ambient light sources may be used to calibrate the obtained spectral measurements of the target. 1. A system configured to be disposed on an aerial vehicle to obtain images of an agricultural land area target at different spectral bands that are calibrated for ambient lighting conditions , the system comprising:four imaging devices consisting of a first imaging device, a second imaging device, a third imaging device, and a fourth imaging device, wherein:the first imaging device is configured to obtain first image data of the target that correspond to a first discrete spectral frequency range centered on a first spectral frequency;the second imaging device is configured to obtain second image data of the target that correspond to a second discrete spectral frequency range centered on a second spectral frequency;the third imaging device is configured to obtain third image data of the target that correspond to a third discrete spectral frequency range centered on a third spectral frequency;the fourth imaging device is configured to obtain fourth image data of the target that correspond to a fourth discrete spectral frequency range centered on a fourth spectral frequency; andthe first spectral frequency, the second spectral frequency, the third spectral frequency, and the fourth spectral frequency are each different from each other;and a photo sensor apparatus disposed near the four imaging devices, the photo sensor apparatus being configured to measure ambient lighting conditions at each of the first discrete spectral frequency range, the second discrete spectral frequency range, the third discrete spectral frequency range, and the fourth discrete spectral frequency range;wherein ...

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Номер записи: 40
12-01-2017 дата публикации

MULTI-ANGLE SPECTRAL IMAGING MEASUREMENT METHOD AND APPARATUS

Номер: US20170010158A1
Автор: Osumi Masayuki
Принадлежит: OFFICE COLOR SCIENCE CO., LTD.

A lighting device that emits illumination light from two or more angular directions onto a sample surface to be measured, an imaging optical lens, and a monochrome two-dimensional image sensor are provided. This configuration provides a method and an apparatus that take a two-dimensional image of the sample surface to be measured at each measurement wavelength and accurately measure multi-angle and spectral information on each of all pixels in the two-dimensional image in a short time. In particular, a multi-angle spectral imaging measurement method and apparatus that have improved accuracy and usefulness are provided. 1. A multi-angle spectral imaging measurement apparatus comprising:a linear or spot lighting device capable of emitting white illumination light perpendicularly onto a sample surface containing effect materials from two or more fixed angular directions;spectroscopic means for dispersing light reflected from the sample surface, the spectroscopic means being disposed above the sample surface;an imaging lens forming an image of reflected light dispersed by the spectroscopic means;a fixed two-dimensional image sensor capable of receiving the reflected light through the imaging lens to take an image of the sample surface; anda white reference surface provided around the entire sample surface;the multi-angle spectral imaging measurement apparatus acquiring spectral information on the sample surface by using changes in optical geometrical conditions in an illumination direction and an image taking direction for each pixel in a two-dimensional image taken with the two-dimensional image sensor;wherein, during calibration before measurement, an image of a reference standard white plate and the white reference surface is taken at the same time, a calibration coefficient for each pixel and each wavelength is measured, and exposure time for each of the wavelengths is determined;a two-dimensional image of the sample surface and the white reference surface provided ...

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Номер записи: 41
12-01-2017 дата публикации

Real Time Birefringent Imaging Spectrometer Based on Differential Structure

Номер: US20170010159A1
Автор: Jie Lin, PENG Jin, Shuaishuai ZHU, Yu Zhang
Принадлежит: Harbin Institute of Technology

A real-time birefringent imaging spectrometer based on differential structure is provided. A polarization beam splitter to add an imaging branch is set. Meanwhile, the structure alters the conventional optical structure to the differential structure by setting another polarization beam splitter. Taking the difference between these two interferogram obtained by two branches of differential structure as the final interferogram and performing the required post-processing calculations produces the spectrum at each pixel. Common-mode error is intensively restrained due to the differential structure, and 50% of the optical loss is avoided because of casting off the analyzer; a high spatial resolution, high spectral resolution image is acquired by combining the high spatial resolution, colorful image with the low spatial resolution, high spectral resolution image.

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Номер записи: 42
14-01-2016 дата публикации

CHEMICAL MAPPING USING THERMAL MICROSCOPY AT THE MICRO AND NANO SCALES

Номер: US20160011049A1
Автор: Furstenberg Robert, Hubler Graham K., Kendziora Chris, McGill R. Andrew, Nguyen Viet K., Papantonakis Michael
Принадлежит:

A non-destructive method for chemical imaging with ˜1 nm to 10 μm spatial resolution (depending on the type of heat source) without sample preparation and in a non-contact manner. In one embodiment, a sample undergoes photo-thermal heating using an IR laser and the resulting increase in thermal emissions is measured with either an IR detector or a laser probe having a visible laser reflected from the sample. In another embodiment, the infrared laser is replaced with a focused electron or ion source while the thermal emission is collected in the same manner as with the infrared heating. The achievable spatial resolution of this embodiment is in the 1-50 nm range. 1. A system for photo-thermal spectroscopic imaging , comprising:a confocal microscope;a diffraction-limited photo-thermal microscope comprising an infrared light detector;a sub-diffraction-limited photo-thermal microscope comprising a visible light detector; andmeans for moving a sample perpendicular to the surface of the sample to maximize the dc component of the visible probe which is used to reconstruct the topography of the sample;wherein the sample is photo-thermally heated using an infrared laser and the resulting increase in thermal emissions is measured using the sub-diffraction-limited photo-thermal microscope.2. The system of claim 1 , wherein the system is non-contact and requires no sample preparation.3. The system of claim 1 , wherein the system has a spatial resolution of between about 1 and 10 μm.4. A system for photo-thermal spectroscopic imaging claim 1 , comprising:a confocal microscope;a diffraction-limited photo-thermal microscope comprising an infrared light detector;a sub-diffraction-limited photo-thermal microscope comprising a visible light detector; andan interferometer to maximize a signal from the visible probe;wherein a sample is photo-thermally heated using an infrared laser and the resulting increase in thermal emissions is measured using the sub-diffraction-limited photo- ...

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Номер записи: 43
14-01-2016 дата публикации

IMAGING UNIT

Номер: US20160011050A1
Автор: SKAULI Torbjørn
Принадлежит: Forsvarets forskningsinstitutt

An imager contains an image sensor with laterally varying spectral response. The imager is scanned over a scene or object to form a spectral image. The spectral responses are repeated at different positions in the field of view so as to reduce the effect of scene nonidealities, such as angle dependence or temporal variation, on the spectral image data. A part of the image sensor may be used for conventional two-dimensional imaging. This part of the image sensor may be used to estimate the scene geometry and scan movement, enabling further improvement in the spectral integrity. 1. Spectral image sensor unit for imaging an object having a movement relative to the sensor , an image of the object being projected along a path over the sensor resulting from said movement ,the spectral sensor unit comprising at least two sets of light sensor elements, each element comprising a filter or other means of adapting the spectral response of the element,such that within each sensor set there are elements with at least two types of different spectral responses, the spectral responses in said at least two sensor sets being essentially identical,the sensor sets being arranged in the path direction such that the object image passes each sensor set so as to pass at least twice over each type of spectral response.2. Image sensor according to with regions along the path direction with different spectral responsivities claim 1 , such that the spectral responsivity is uniform claim 1 , or substantially uniform claim 1 , within each region claim 1 , each region being related to at least one sensor element in the corresponding sensor set.3. Image sensor according to in which the filter provides a continuous variation in spectral response across at least part of each filter set along the path direction.4. Image sensor according to in which the scanning is provided by movement of the image sensor relative to the scene or object.5. Image sensor according to in which the scanning is provided by ...

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Номер записи: 44
11-01-2018 дата публикации

Lens scanning mode hyperspectral imaging system and rotor unmanned aerial vehicle

Номер: US20180010964A1
Автор: Chen Xinghai, Huang Yu, Huang Zhihui, Liu Yelin
Принадлежит:

A lens scanning mode hyperspectral imaging system and a rotor unmanned aerial vehicle include: an imaging lens, an imaging spectrometer and a surface array detector arranged in sequence and coaxial to a main optic axis, wherein the imaging spectrometer and the surface array detector are connected and mounted to each other; wherein the lens scanning mode hyperspectral imaging system further includes: a driving device for driving the imaging lens to translate relative to a plane where a slit of the imaging spectrometer is. The hyperspectral imaging system of the present invention overcomes the technical bias in the prior art that the imaging lens must be fixed, and the present invention provides relative motion between the target object and the imaging spectrometer by the lens scanning mode for imaging, which solves the image distortion problem of conventional hyperspectral imaging system using a slit scanning mode or a scanning mode. 1159591351. A lens scanning mode hyperspectral imaging system , comprising: an imaging lens () , an imaging spectrometer () and a surface array detector () arranged in sequence and coaxial to a main optic axis , wherein the imaging spectrometer () and the surface array detector () are connected and mounted to each other; wherein the lens scanning mode hyperspectral imaging system further comprises: a driving device for driving the imaging lens () to translate relative to a plane where a slit () of the imaging spectrometer () is; the imaging lens () forms a lens scanning mode during translating , and a scanning distance is 10±2 mm.2112. The lens scanning mode hyperspectral imaging system claim 1 , as recited in claim 1 , wherein the driving device comprises: a translation mechanism mounted to the imaging lens () claim 1 , and a scanning motor () for driving the translation mechanism.311151116151612. The lens scanning mode hyperspectral imaging system claim 2 , as recited in claim 2 , wherein the translation mechanism comprises: a fixing ...

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Номер записи: 45
11-01-2018 дата публикации

WAVELENGTH BAND BASED PASSIVE INFRARED GAS IMAGING

Номер: US20180011009A1
Автор: Ekerot Erik, Sandsten Jonas
Принадлежит:

Systems and methods disclosed herein, in accordance with one or more embodiments provide for imaging gas in a scene, the scene having a background and a possible occurrence of gas. In one embodiment, a method and a system adapted to perform the method includes: controlling a thermal imaging system to capture a gas IR image representing the temperature of a gas and a background IR image representing the temperature of a background based on a predetermined absorption spectrum of the gas, on an estimated gas temperature and on an estimated background temperature; and generating a gas-absorption-path-length image, representing the length of the path of radiation from the background through the gas, based on the gas image and the background IR image. The system and method may include generating a gas visualization image based on the gas-absorption-path-length image to display an output image visualizing a gas occurrence in the scene. 1. A method of imaging gas in a scene , the scene having a background and a possible occurrence of gas , the method comprising:controlling a thermal imaging system to capture a gas infrared (IR) image representing the temperature of a gas and a background IR image representing the temperature of a background, based on a predetermined absorption spectrum of the gas, an estimated gas temperature, and an estimated background temperature; andgenerating a gas-absorption-path-length image, which represents the length of the path of radiation from the background through the gas, based on the gas IR image and the background IR image.2. The method of claim 1 , further comprising:generating a gas visualization image based on the gas-absorption-path-length image.3. The method of claim 2 , wherein:the gas visualization image is generated based on pixel values of the gas-absorption-path-length image and a palette; andthe palette comprises grayscales and/or colors associated with mutually exclusive ranges of pixel values.4. The method of claim 1 , wherein ...

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Номер записи: 46
14-01-2016 дата публикации

Inspection Apparatus and Methods, Methods of Manufacturing Devices

Номер: US20160011523A1
Автор: Pellemans Henricus Petrus Maria, SINGH Amandev, WARNAAR Patrick
Принадлежит: ASML Netherlands B.V.

Inspection apparatus () 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 (). A reference beam following a reference path (dotted rays). An acousto-optical modulator () 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 () follows a second reference path (dot-dash rays). Interference between the two reference beams can be used for intensity normalization. 1. An inspection apparatus for measuring properties of a targets structure , comprising:a radiation source;an image detector; andan optical system, the optical system defining the following beam paths:an illumination path for receiving radiation from the radiation source, forming a beam of illuminating radiation having a selected illumination profile and focusing said illuminating radiation onto a target on a substrate;a collection path for collecting diffracted radiation from said target and delivering a selected portion of the diffracted radiation to the image detector; anda reference path for receiving radiation from the radiation source and delivering a beam of reference radiation to the image detector so as to interfere with the diffracted radiation,wherein the image detector comprises an array of pixels for capturing two-dimensional images,wherein at least one of said illumination path and said reference path includes a device for shifting an optical frequency of the reference ...

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Номер записи: 47
14-01-2021 дата публикации

GENERATING NARROW-BAND SPECTRAL IMAGES FROM BROAD-BAND SPECTRAL IMAGES

Номер: US20210010862A1
Автор: ASHKENAZI Eliahu Chaim, GABAY Hila, IMMER Efrat, KATZ Shahar, RAZ Ariel
Принадлежит:

System and method for narrowing the transmission curves obtained using a spectral imager in which spectral images are acquired using a MEMS Fabri-Perot (FP) tunable filter. A method includes acquiring a first plurality of broad-band spectral images associated with respective MEMS FP etalon states and processing the first plurality of broad-band spectral images into a second plurality of narrow-band spectral images. 1. A method for generating narrow-band spectral images , the method comprising:acquiring, by a spectral imager that comprises a tunable filter, a first plurality (N) of broad-band spectral images associated with respective states of the tunable filter; andprocessing, by a hardware processor, the first plurality of broad-band spectral images into a second plurality (M) of narrow-band spectral images.2. The method according to wherein each broad-band image of the first plurality of broad-band spectral images is associated with a respective broad-band transmission curve having a respective broad-band full width half maximum value; andwherein each narrow-band spectral image of the second plurality of narrow-band spectral images is associated with a respective narrow-band transmission curve having a narrow-band full width half maximum smaller than the broad-band full width half maximum value of the broad-band transmission curve.3. The method of claim 2 , wherein the spectral imager includes an image sensor having a filter array with a third plurality (C) of filter types claim 2 , wherein filters of different types differ from each other by transfer function; and wherein C exceeds two.4. The method of claim 3 , wherein C equals three and the filter array is a color filter array.5. The method of claim 3 , wherein C equals three and the filter array is a red claim 3 , green and blue color filter array.6. The method of claim 3 , wherein C equals four and the filter array is a red claim 3 , green claim 3 , blue and infrared filter array.7. The method of claim 3 , ...

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Номер записи: 48
14-01-2021 дата публикации

HYPERSPECTRAL IMAGING APPARATUS AND METHOD

Номер: US20210010864A1
Автор: LIM Siew Lay, Ooi Zi En, Zhang Jie
Принадлежит:

Various embodiments provide a hyperspectral imaging apparatus. The hyperspectral imaging apparatus includes a micro-lens array having a plurality of micro-lenses; and a filter array having a plurality of tunable filters. Each of the plurality of tunable filters is optically coupled to a respective micro-lens of the plurality of micro-lenses. Each micro-lens and the corresponding coupled tunable filter are configured to generate a spectrally filtered image of a scene, such that the micro-lens array and the filter array generate a plurality of spectrally filtered images of the scene for receiving by a plurality of areas of an image sensor. Each of the plurality of tunable filters is tunable to transmit a selected wavelength within a respective spectral band, wherein the spectral bands of the plurality of tunable filters are different from each other. 1. A hyperspectral imaging method , comprising:receiving a first set of spectrally distinct images of a scene generated at a first image capture time;receiving a second set of spectrally distinct images of the scene generated at a second image capture time different from the first image capture time, the second set of spectrally distinct images being generated at different wavelengths from the first set of spectrally distinct images;determining a spectrum for each pixel based on the first set of spectrally distinct images and the second set of spectrally distinct images; andcombining the first set of spectrally distinct images and the second set of spectrally distinct images into a composite image having spectral information of the scene.2. The hyperspectral imaging method of claim 1 , further comprising: a spectral transmission and response characteristics of an image sensor used for capturing and receiving the spectrally distinct images;', 'a spectral transmission characteristics of a plurality of tunable filters used for generating the spectrally distinct images; or', 'a spectral composition of a light source used for ...

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Номер записи: 49
10-01-2019 дата публикации

Accessories for handheld spectrometer

Номер: US20190011313A1
Автор: Assaf CARMI, Damian Goldring, Dror Sharon, Guy BRODETZKI, Ittai NIR, Nitzan WAISBERG, Ofer RACHMAN, Omer KEILAF, Sagee Rosen, Uri Kinrot
Принадлежит: Verifood Ltd

A protective sheath having a closed end and an open end is sized to receive a hand held spectrometer. The spectrometer can be placed in the sheath to calibrate the spectrometer and to measure samples. In a calibration orientation, an optical head of the spectrometer can be oriented toward the closed end of the sheath where a calibration material is located. In a measurement orientation, the optical head of the spectrometer can be oriented toward the open end of the sheath in order to measure a sample. To change the orientation, the spectrometer can be removed from the sheath container and placed in the sheath container with the calibration orientation or the measurement orientation. Accessory container covers can be provided and placed on the open end of the sheath with samples placed therein in order to provide improved measurements.

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Номер записи: 50
03-02-2022 дата публикации

METHOD AND APPARATUS FOR MEASURING LIGHT INTENSITY FOR IMAGING

Номер: US20220031167A1
Автор: Beldon Patrick John, Macey Paul David
Принадлежит: Cortirio Limited

A method of measuring light intensity for imaging using a light detector array comprising a plurality of light detectors arranged to generate an output corresponding to an intensity of incident light. In a first measurement mode the light detector array generates a first plurality of output signals, each generated by one group of proximate light detectors, each group comprising a light detector pair, the first plurality of output signals each corresponding to a difference between the light intensity detected by the light detectors of the group, and generating a light intensity measurement for each group from each received output signal of the first plurality of output signals. In a second measurement mode the light detector array generates a second plurality of output signals, and a light intensity measurement is generated for each light detector from the second plurality of output signals. 1. A method of measuring light intensity for imaging using a light detector array comprising a plurality of light detectors , each light detector of the plurality of light detectors arranged to generate an output corresponding to an intensity of incident light , said method comprising , in a first measurement mode:controlling the light detector array to generate a first plurality of output signals, each output signal of the first plurality of output signals generated by one of a plurality of groups of proximate light detectors of the light detector array, each group of proximate light detectors comprising a first light detector and second light detector forming a light detector pair, each output signal of the first plurality of output signals corresponding to a difference between the light intensity detected by the light detectors of the group of proximate light detectors, andgenerating a light intensity measurement for each group from each received output signal of the first plurality of output signals,the method further comprising, in a second measurement mode:controlling the ...

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Номер записи: 51
09-01-2020 дата публикации

WAVELENGTH BAND BASED PASSIVE INFRARED GAS IMAGING

Номер: US20200011789A1
Автор: Ekerot Erik, Kotaleski Jonce, Sandsten Jonas
Принадлежит:

Systems and methods disclosed herein, in accordance with one or more embodiments provide for imaging gas in a scene, the scene having a background and a possible occurrence of gas. In one embodiment, a method and a system adapted to perform the method includes: controlling a thermal imaging system to capture a gas IR image representing the temperature of a gas and a background IR image representing the temperature of a background based on a predetermined absorption spectrum of the gas, on an estimated gas temperature and on an estimated background temperature; and generating a gas-absorption-path-length image, representing the length of the path of radiation from the background through the gas, based on the gas image and the background IR image. The system and method may include generating a gas visualization image based on the gas-absorption-path-length image to display an output image visualizing a gas occurrence in the scene. 1. (canceled)2. A method comprising:identifying a subset of a predetermined absorption spectrum of a gas in a scene based on temperatures of the gas and a background of the scene;capturing a gas infrared (IR) image in response to radiation received in a high absorption wavelength band for the gas in the predetermined absorption spectrum and comprising the subset of the predetermined absorption spectrum;capturing a background IR image in response to radiation received in a low absorption wavelength band for the gas in the predetermined absorption spectrum;capturing a water image in response to radiation received in a water wavelength band; andgenerating a gas-absorption-path-length image, which represents the length of the path of radiation from the background through the gas, based on the gas IR image, the background IR image, and the water image.3. The method of claim 2 , wherein the water wavelength band excludes the high absorption wavelength band and/or the low absorption wavelength band.4. The method of claim 2 , further comprising ...

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Номер записи: 52
15-01-2015 дата публикации

Photoconductive antenna, terahertz wave generating device, camera, imaging device, and measuring device

Номер: US20150014532A1
Автор: Satoshi Takenaka
Принадлежит: Seiko Epson Corp

A photoconductive antenna includes a semiconductor layer, and first and second electrodes. The semiconductor layer includes a first conductive region and a second conductive region constituting portions of a surface of the semiconductor layer disposed on a side to which the pulsed light is irradiated, and a third conductive region disposed between the first and second conductive regions. The first conductive region contains a first conductive type impurity and the second conductive region contains a second conductive type impurity. The third conductive region has a carrier density lower than a carrier density of the first conductive region or a carrier density of the second conductive region. The first electrode and the second electrode are disposed on the side to which the pulsed light is irradiated. The third conductive region is configured and arranged to be irradiated by the pulsed light.

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Номер записи: 53
09-01-2020 дата публикации

Optical Implementation of Machine Learning for Real Time Increased Contrast via Multiple Wavelength Illumination with Tunable Power

Номер: US20200012875A1
Автор: Ganapati Vidya, Piponi Daniele, Rephaeli Eden, Teisseyre Thomas
Принадлежит:

An imaging system (e.g., hyperspectral imaging system) receives an indication to compare a first object and a second object (e.g., two anatomical structures or organs in a medical environment). The imaging system accesses a classification vector for the first object and the second object, the classification vector having been extracted by separating a plurality of collected reflectance values for the first object from a plurality of collected reflectance values for the second object. A set of optimal illumination intensities for one or more spectral illumination sources of the imaging system is determined based on the extracted classification vector. The first and second objects are illuminated with the determined illumination intensities. A high-contrast image of the first and second objects is provided for display, such that the two objects can be readily distinguished in the image. The intensity of pixels in the image is determined by the illumination intensities. 1. An imaging system comprising:one or more spectral illumination sources; anda controller comprising a computer configured to:receive an indication to compare a first object and a second object;access a classification vector for the first object and the second object, the classification vector having been extracted by separating a plurality of collected reflectance values for the first object from a plurality of collected reflectance values for the second object;determine, from the extracted classification vector, an optimized set of illumination intensities; andoperate the one or more spectral illumination sources to provide illumination to the first object and the second object with one or more spectral bands of light having the optimized set of illumination intensities.2. The system of claim 1 , wherein determining the optimized set of illumination intensities comprises determining a set of illumination intensities optimized to increase contrast between the first object and the second object when ...

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Номер записи: 54
15-01-2015 дата публикации

SPATIAL RESOLUTION ENHANCEMENT IN HYPERSPECTRAL IMAGING

Номер: US20150015692A1
Автор: Smart Anthony
Принадлежит:

In a hyperspectral imaging system and method, a pixilated imaging sensor array receives light reflected from, transmitted through, or scattered by a target scene. Images of the target scene are acquired at a number of times and these images are processed to generate hyperspectral data for each pixel of the imaging sensor array based on data for the pixel included in each of the acquired images. This processing can include spatially aligning two or more of the images that were spatially shifted with respect to each other when acquired based on at least one common image feature in the images. 1. A hyperspectral imaging system comprising:an imaging sensor array including an array of pixels configured for outputting electrical signals in response to receiving light reflected from, transmitted through, or scattered by a target scene;an array of light filters configured for filtering the light reaching the pixels of the imaging sensor; and acquire into a memory of the controller from the imaging sensor array a plurality of images of the target scene during movement or dithering of the combination of the imaging sensor array and the array of light filters, wherein said plurality of images as acquired are spatially shifted with respect to each other; and', 'process the plurality of acquired images in the memory of the controller to spatially align said plurality of images based on at least one common image feature in said plurality of images., 'a controller adapted to2. The hyperspectral imaging system of claim 1 , wherein each image includes the electrical signals output by the array of pixels of the imaging sensor array at the same time or substantially the same time.3. The hyperspectral imaging system of claim 1 , wherein the array of light filters includes light filters that are configured to filter different center claim 1 , peak transmission wavelengths of light.4. The hyperspectral imaging system of claim 3 , wherein adjacent light filters of at least a portion of ...

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Номер записи: 55
10-01-2019 дата публикации

SENSOR-SYNCHRONIZED SPECTRALLY-STRUCTURED-LIGHT IMAGING

Номер: US20190014245A1
Автор: Brunk Hugh L., Lord John D., Rhoads Geoffrey B.
Принадлежит:

A spectral imaging device is configured to capture color images synchronized with controlled illumination from different color light emitting diodes. A processor in the device applies a coupling factor to sampled color images to convert sampled pixels into spectral channels corresponding to LED color and color filter. Multi-spectral spectricity vectors produced at pixel locations are used along with spatial information to classify objects, such as produce items. 18-. (canceled)9. An apparatus for spectral imaging comprising:an image sensor operable to obtain images, the images comprising pixel values corresponding to locations in a field of view of the image sensor;an illumination source comprising at least three LEDs, each a different color;a drive circuit that selectively strobes on the LEDs synchronized with capture of frames of the images by the image sensor;means for obtaining multi-spectral channel values per pixel corresponding to the LEDs;means for computing a spatial relationship function of pixels sampled from different locations of the field of view; andmeans for classifying an object depicted in the images as being one of plural different classes based on the multi-spectral channels per pixel and spatial relationship function.10. The apparatus of wherein the object comprises a produce item claim 9 , and the means for classifying identifies a type of produce.11. The apparatus of wherein the spatial relationship function comprises a function of multi-spectral values of pixels at 2 or more spatial dimensions.12. The apparatus of wherein the spatial relationship function comprises a function of multi-spectral values of pixels at 3 or more spatial dimensions. This application is a continuation of Ser. No. 15/456,300, filed Mar. 10, 2017 (now patent Ser. No. 10/027,868), which is a continuation of Ser. No. 14/201,852, filed Mar. 8, 2014 (now U.S. Pat. No. 9,593,982), which is a continuation-in-part of Ser. No. 13/840,451, filed Mar. 15, 2013 (now U.S. Pat. No. ...

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Номер записи: 56
03-02-2022 дата публикации

HYPERSPECTRAL IMAGER METHOD AND APPARATUS

Номер: US20220034717A1
Автор: Chlingaryan Anna, Lowe Alex, Melkumyan Arman, Murphy Richard J., Nguyen Dai Bang, Scheding Steven, WISHART Stuart
Принадлежит:

A compact hyperspectral imager adapted to operate in harsh environments and to conduct post acquisition signal processing to provide automated and improved hyperspectral processing results is disclosed. The processing includes luminance and brightness processing of captured hyperspectral images, hyperspectral image classification and inverse rendering to produce luminance invariance image processing. 1. A hyperspectral imager for imaging external environments , the imager including:an optical line scanner unit adapted to perform line scans of a mining environment via rotation thereof;an environmental enclosure surrounding the optical line scanner unit providing a first degree of temperature and dust isolation from the environment, the enclosure mounted on a rotatable platform;a rotatable platform attached to the environmental enclosure, adapted to rotate the environmental enclosure and optical line scanner unit under the control of an electronic control system;a thermo-electric cooler unit attached to the environmental enclosure for cooling the enclosure, thereby maintaining the enclosure at a substantially stable temperature during operations; andan electronic control system for controlling the thermo electric cooler unit, and the optical line scanner unit, and the rotatable platform for the capture of hyperspectral images by said imager.2. A hyperspectral imager as claimed in further including a desiccant port and holding bay for holding a desiccant for providing humidity control to said enclosure.3. A hyperspectral imager as claimed in wherein said thermo electric cooler unit is mounted on top of the enclosure.4. A hyperspectral imager as claimed in wherein said rotatable platform is driven by a cable chain to manage cable movement and prevent breakage.5. A hyperspectral imager as claimed in wherein said environmental enclosure includes at least one optical aperture for projection of an optical lens of the optical line scanner unit.610.-. (canceled)11. A method ...

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Номер записи: 57
16-01-2020 дата публикации

Surgical visualization with proximity tracking features

Номер: US20200015899A1
Автор: Charles J. Scheib, Jeffrey S. Swayze
Принадлежит: Ethicon LLC

A surgical visualization system is disclosed. The surgical visualization system is configured to identify one or more structure(s) and/or determine one or more distances with respect to obscuring tissue and/or the identified structure(s). The surgical visualization system can facilitate avoidance of the identified structure(s) by a surgical device. The surgical visualization system can comprise a first emitter configured to emit a plurality of tissue-penetrating light waves and a second emitter configured to emit structured light onto the surface of tissue. The surgical visualization system can also include an image sensor configured to detect reflected visible light, tissue-penetrating light, and/or structured light. The surgical visualization system can convey information to one or more clinicians regarding the position of one or more hidden identified structures and/or provide one or more proximity indicators.

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Номер записи: 58
16-01-2020 дата публикации

SURGICAL IMAGING APPARATUS AND METHODS

Номер: US20200015908A1
Автор: McFadyen Stephen, Piron Cameron, Richmond Joshua, Sela Gal, Wood Michael, Yuwaraj Murugathas
Принадлежит:

A hyperspectral imaging apparatus and methods for performing hyperspectral imaging of a surgical field, involving: an external optical imaging device for externally imaging internal tissue through a surgical access port, the access port having a port wall having a light-diffusing surface texture, whereby reflectance of the port wall is decreasable, and the external optical imaging device having an illuminated exoscope, the illuminated exoscope having: a longitudinal housing; an optical imaging assembly provided within the longitudinal housing; an imaging camera interfaced with the optical imaging assembly for detecting images collected by the optical imaging assembly; and one or more illumination sources supported by the longitudinal housing, wherein an illumination axis associated with each illumination source is offset from an imaging axis of the optical imaging assembly; a remote light source; a spectral filtering device in optical communication with the remote light source; and a light guide having a proximal end in optical communication with an output of the spectral filtering device and one or more distal ends, wherein each distal end is in optical communication with an illumination source. 1. A hyperspectral imaging apparatus for performing hyperspectral imaging of a surgical field , the apparatus comprising: a longitudinal housing;', 'an optical imaging assembly provided within the longitudinal housing;', 'an imaging camera interfaced with the optical imaging assembly for detecting images collected by the optical imaging assembly; and', 'one or more illumination sources supported by the longitudinal housing, wherein an illumination axis associated with each illumination source is offset from an imaging axis of the optical imaging assembly;, 'an external optical imaging device for externally imaging internal tissue through a surgical access port, the access port comprising a port wall having a light-diffusing surface texture, whereby reflectance of the port ...

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Номер записи: 59
19-01-2017 дата публикации

Spectrometer for generating a two dimensional spectrum

Номер: US20170016767A1
Автор: Daniel Perez Calero, James Peter Robert Day, Kees Moddemeijer, Marijn Sandtke, Tom Duivenvoorde
Принадлежит: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO

The present disclosure concerns a spectrometer ( 10 ) and method for generating a two dimensional spectrum (S). The spectrometer ( 10 ) comprises a main grating ( 3 ) and cross dispersion element ( 2 ). An imaging mirror ( 4 ) is arranged for reflecting and focussing dispersed radiation (R 3 ) from the main grating ( 3 ) towards an image plane (IP) for imaging the two dimensional spectrum (S) onto an image plane (IP) of the spectrometer ( 10 ). A correction lens ( 6 ) is arranged for correcting optical aberrations in the imaging of the two dimensional spectrum (S) in the image plane (IP). The imaging mirror ( 4 ) and correction lens ( 6 ) have a coinciding axis of cylindrical symmetry (AS).

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Номер записи: 60
19-01-2017 дата публикации

SNAPSHOT SPECTRAL IMAGING BASED ON DIGITAL CAMERAS

Номер: US20170016768A1
Автор: Averbuch Amir, Golub Michael, NATHAN Menachem
Принадлежит:

Snapshot spectral imagers comprise an imaging lens, a dispersed image sensor and a restricted isometry property (RIP) diffuser inserted in the optical path between the source image and the image sensor. The imagers are used to obtain a plurality of spectral images of the source object in different spectral bands in a single shot. In some embodiments, the RIP diffuser is one dimensional. An optional disperser may be added in the optical path, to provide further dispersion at the image sensor. In some embodiments, all imager components except the RIP diffuser may be part of a digital camera, with the RIP diffuser added externally. In some embodiments, the RIP diffuser may be included internally in a digital camera. 1. A spectral imaging system , comprising:a) a first imaging lens;b) a first image sensor;c) a single phase transmitting diffractive optical element positioned in a first imaging path extending between a source object and the first image sensor through the first imaging lens, the single phase transmitting diffractive optical element designed to disperse light originating from the source object to form, in a single shot, a diffused-dispersed image of the source object on at least a part of the first image sensor; andd) a processor configured to process the diffused-dispersed image into a plurality of spectral images of the source object.2. The spectral imaging system of claim 1 , wherein the single phase transmitting diffractive optical element is positioned at a system aperture.3. The spectral imaging system of claim 1 , wherein the single phase transmitting diffractive optical element is positioned at a position closer to a system aperture than to the first image sensor.4. The spectral imaging system of claim 1 , wherein the single phase transmitting diffractive optical element is positioned at a position closer to an entrance pupil of the first imaging lens than to the first image sensor.5. The spectral imaging system of claim 1 , wherein the single phase ...

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Номер записи: 61
17-01-2019 дата публикации

HIGH RESOLUTION BROADBAND MONOLITHIC SPECTROMETER AND METHOD

Номер: US20190017869A1
Автор: Kruizinga Borgert, van BEIJNUM Frerik, van BRUG Hedser
Принадлежит: Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

A monolithic spectrometer () for spectrally resolving light (L), comprises a body () of solid material having optical surfaces (-) configured to guide the light (L) along an optical path (EEEE) inside the body (). The optical surfaces of the body () comprise a segmented focusing surface (,) comprising first and second continuously functional optical shapes (Ca,Cb) to focus received parts of respective beams (La,Lb) onto respective focal position (fa,fb) in an imaging plane (P) outside the body (). The second continuously functional optical shape (Cb) is separated from the first continuously functional optical shape (Ca) by an optical discontinuity (Dab) there between. 1. A monolithic spectrometer for spectrally resolving light , the monolithic spectrometer comprising a body of solid material having optical surfaces configured to guide the light along an optical path inside the body , the optical surfaces comprising:an entry surface configured to receive the light to enter into the body as an entry beam;a collimating surface configured to receive the entry beam and to reflect the entry beam as a collimated beam;a grating surface configured to receive the collimated beam and to reflect diffracted beams in different directions according to a wavelength dependent diffraction angle;a first focusing section configured to receive at least part of a first diffracted beam of the diffracted beams, the received at least part of the first diffracted beam having a first wavelength, the first focusing section having a first continuously functional optical shape to focus all received parts of the first diffracted beam onto a first focal position in an imaging plane outside the body;a second focusing section configured to receive at least part of a second diffracted beam of the diffracted beams, the received at least part of the second diffracted beam having a second wavelength, that is distinct from the first wavelength, the second focusing section having a second continuously ...

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Номер записи: 62
17-01-2019 дата публикации

METHOD OF CALIBRATING SPECTRUM SENSORS IN A MANUFACTURING ENVIRONMENT AND AN APPARATUS FOR EFFECTING THE SAME

Номер: US20190017871A1
Автор: Choi Byung Il
Принадлежит:

Spectrum sensors can be continuously calibrated in a manufacturing environment employing a continuously moving platform that carries the spectrum sensors in combination with spatially separated light spectra illuminating a region of the platform. A plurality of spectrum sensors, each including multiple sensor pixels, can be placed on the platform. The spatially separated light spectra can be illuminated over an area of the platform. The plurality of spectrum sensors can be moved with the platform through a region of the spatially separated light spectrum. Each sensor pixel for each of the plurality of spectrum sensors can be calibrated based on response of each spectral channel during passage through the spatially separated light spectra. The entire spectra from a light source can be employed simultaneously to calibrate multiple spectrum sensors in the manufacturing environment. 1. A method of simultaneously measuring spectral responses of a plurality of optical sensors , comprising:placing a plurality of optical sensors on a platform, each of the plurality of optical sensors including a plurality of sensor pixels;providing spatially separated light spectra over an illuminated region of the platform, wherein different areas of the illuminated region are illuminated with different monochromatic lights having different peak wavelengths;moving the plurality of optical sensors with the platform through the illuminated region; andmeasuring spectral responses of at least one sensor pixel within each of the plurality of optical sensors during transit through the illuminated region.2. The method of claim 1 , whereinthe spatially separated light spectra include a continuous wavelength range segment from 250 nm to 1,100 nm.3. The method of claim 1 , further comprising intermittently stopping movement of the plurality of optical sensors during transit through the illumination region claim 1 , wherein the spectral responses of the sensor pixels is performed while the plurality ...

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Номер записи: 63
17-01-2019 дата публикации

METHOD OF EFFICIENT ACQUISITION OF SOIL DATA USING IMAGE MAPPING

Номер: US20190017984A1
Автор: Fang Joseph Y.
Принадлежит:

A system and method for determining soil properties, such as organic matter (OM), pH, and electrical conductivity (EC) using a mobile soil sample station and a multispectral sensor mounted on a multi-rotors or professional fixed-wing drone. Combined with an optional fixed soil sampling station and mathematical modeling (built with Cloud-based database with iterative learning process) calibration, the system and method improve soil analysis by enabling real time examination, as well as improving affordability and efficiency. 1. A system for mapping soil properties of a field , the system comprising:a multispectral image mapping system configured to produce a multispectral image for a first land area having a defined periphery, the multispectral image having a plurality of discernible regions;a mobile soil sensor system comprising a connector for attachment to a vehicle to allow moving the sensor system over a second land area, a soil sampling mechanism which takes periodic samples of soil as the system moves over the second land area, a GPS module for determining a location for each soil sample, at least a first soil sensor for determining a desired property of each soil sample, and memory for recording soil sample properties and location as soil data, wherein the second land area is completely within the periphery of the first land area;a database for collecting and storing the soil data from the mobile system and for collecting images produced by the mapping system; a correlation system for aligning the at least one grid onto a corresponding portion of the multispectral image and correlating soil data to discernible regions of the corresponding portion to create mapped regions; and', 'an interpolation system for assigning soil properties to remaining portions of the first land area which are not part of the second land area, wherein the assigned soil properties are based on the mapped regions., 'a computing system electronically coupled to the database and ...

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Номер записи: 64
17-01-2019 дата публикации

General technical field and state of the art

Номер: US20190018230A1
Автор: BOURCIER Frédéric, Walter Philippe
Принадлежит:

The present disclosure concerns a broadband hyperspectral imaging spectrophotometer configured to analyze an object and includes an illumination assembly having a source for emitting a light beam and configured so that the light beam scans line by line the object to be analyzed, a focusing mirror, a first mirror folding, and a planar scanning mirror movable in rotation. The illumination assembly, the focusing mirror, the first folding mirror and the planar mirror are arranged to bring the light beam to the object along a line which will be displaced on the object via the scanning mirror. The imaging spectrophotometer further includes two measuring sensors by a distance between the object and the scanning mirror. The focusing mirror is movable in translation to adapt the imager to the measured distance by the measuring sensors. 1. A broadband hyperspectral imaging spectrophotometer configured to analyze an object , said spectrophotometer comprisingan illumination assembly comprising a source for emitting a light beam, said assembly being configured so that the light beam scans line by line the object to be analyzed;a focusing mirror;a first folding mirror; anda planar scanning mirror movable in rotation; whereinthe illumination assembly, the focusing mirror, the first folding mirror and the planar mirror are arranged to bring the light beam to the object along a line which will be displaced on the object via the scanning mirror; andthe imaging spectrophotometer comprises two measuring sensors by a distance between the object and the scanning mirror, and in that the focusing mirror is movable in translation to adapt the imager to the measured distance by said measuring sensors.2. The imaging spectrophotometer according to claim 1 , wherein the first folding mirror comprises a front face oriented toward the focusing mirror and a rear face opposite to said front face claim 1 , said first mirror comprising a slot configured to let pass a beam issued from the object claim ...

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Номер записи: 65
21-01-2021 дата публикации

INSPECTION APPARATUS, INSPECTION SYSTEM, AND INSPECTION METHOD

Номер: US20210018367A1
Автор: KANAI Masashi, KURI Ryohei, Oguchi Satoshi
Принадлежит:

An inspection method includes: spectroscopically separating light from a predetermined imaging range of an inspection object into light of a plurality of wavelengths and imaging spectroscopic images of each of the wavelengths; inspecting a shape of the inspection object using the spectroscopic image of a predetermined wavelength among the wavelengths imaged in the imaging of the spectroscopic images of each of the wavelengths; and inspecting a color of the inspection object using the spectroscopic images of each of the wavelengths imaged. The predetermined wavelength is determined so that a maximum light quantity of the light from the inspection object in the corresponding spectroscopic image at the predetermined wavelength is equal to or higher than maximum light quantities in the other spectroscopic images at the other wavelengths. 1. An inspection method for causing a processor to execute a program stored in a memory , the method comprising executing on the processor the steps of:spectroscopically separating light from a predetermined imaging range of an inspection object into light of a plurality of wavelengths and imaging spectroscopic images of each of the wavelengths;inspecting a shape of the inspection object using the spectroscopic image of a predetermined wavelength among the wavelengths imaged in the imaging of the spectroscopic images of each of the wavelengths; andinspecting a color of the inspection object using the spectroscopic images of each of the wavelengths imaged,wherein the predetermined wavelength is determined so that a maximum light quantity of the light from the inspection object in the corresponding spectroscopic image at the predetermined wavelength is equal to or higher than maximum light quantities in the other spectroscopic images at the other wavelengths.2. An inspection apparatus comprising:a spectroscopic image sensor component configured to spectroscopically separate light from a predetermined imaging range of an inspection object ...

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Номер записи: 66
16-01-2020 дата публикации

Imaging Spectrograph Utilizing the Zero Order of the Diffraction Grating

Номер: US20200018649A1
Автор: Kapitán Josef, Kyvalsky Jiri, Pochyly Antonin, Vacula Daniel, Vlcek Jan, Zelinka Frantisek
Принадлежит:

An imaging spectrograph utilizing a zero order of a diffraction grating includes an entrance aperture, a collimating optical system, a primary diffraction grating, a primary focusing optical system, a primary radiation detector, a secondary diffraction grating, a secondary focusing optical system, and a secondary radiation detector. The secondary diffraction grating is arranged in a location in the direction of radiation which has at least one of: (a) passed through the zero order of the primary diffraction grating, and (b) has reflected from the zero order of the primary diffraction grating and is directed outside the primary focusing optical system. 14-. (canceled)5. An imaging spectrograph utilizing a zero order of a diffraction grating , the imaging spectrograph comprising:an entrance aperture;a collimating optical system arranged behind the entrance aperture in a direction of radiation;a primary diffraction grating arranged behind the collimating optical system and associated with a primary focusing optical system;a primary radiation detector arranged behind the primary focusing optical system;a secondary diffraction grating associated with a secondary focusing optical system; anda secondary radiation detector arranged behind the secondary focusing optical system;the secondary diffraction grating being arranged in a location in the direction of radiation which has at least one of: (a) passed through the zero order of the primary diffraction grating, and (b) has reflected from the zero order of the primary diffraction grating and is directed outside the primary focusing optical system.6. The imaging spectrograph according to claim 5 , wherein at least one additional diffraction grating is arranged in at least one of the direction of radiation which: (a) has passed through the secondary diffraction grating in the zero order claim 5 , and (b) has been reflected from the secondary diffraction grating in the zero order and is directed outside the secondary focusing ...

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Номер записи: 67
16-01-2020 дата публикации

Spectral imaging apparatus and methods

Номер: US20200018702A1
Автор: Kent A. Murphy, Philip R. Couch
Принадлежит: AXON DX LLC

An imaging system images a sample across one or more wavelengths. A light source illuminates a sample with one or more wave-lengths of light, and an image sensor detects light from the illuminated sample. A linear variable long pass filter is positioned to filter light reflected from the sample to pass to the image sensor multiple different wave-length bands having different cut-off wavelengths. Wavelengths of light on one side of the cut-off wavelength are blocked and wavelengths of light on the other side of the cut-off wavelength are passed as multiple different long pass wavelength bands for detection by the image sensor. The image sensor detects light for each of the multiple different long pass wavelength bands from the sample. Data processing circuitry converts the detected light for the multiple different long pass wavelength bands for the sample into corresponding different long pass wavelength band data sets for the sample.

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Номер записи: 68
21-01-2021 дата публикации

HIGH-THROUGHPUT HYPERSPECTRAL IMAGING SYSTEMS

Номер: US20210018440A1
Автор: Conrad Andrew, Santori Charles, Sinha Supriyo
Принадлежит: Verily Life Sciences LLC

High-throughput hyperspectral imaging systems are provided. According to an aspect of the invention, a system includes an excitation light source; an objective that is configured to image excitation light onto the sample, such that the excitation light causes the sample to emit fluorescence light; a channel separator that is configured to separate the fluorescence light into a plurality of spatially dispersed spectral channels; and a sensor. The excitation light source includes a light source and a plurality of lenslet arrays. Each of the lenslet arrays is configured to receive light from the light source and to generate a pattern of light, and the patterns of light generated by the lenslet arrays are combined to form the excitation light. The objective is configured to simultaneously image each of the patterns of light to form a plurality of parallel lines or an array of circular spots at different depths of the sample. 1. A system comprising:an excitation light source that is configured to emit excitation light;an objective that is configured to receive the excitation light from the excitation light source and image the excitation light onto a sample, such that the excitation light causes the sample to emit fluorescence light;a channel separator that is configured to receive the fluorescence light from the sample and separate the fluorescence light into a plurality of spatially dispersed spectral channels; anda sensor that is configured to receive the plurality of spatially dispersed spectral channels from the channel separator, a plurality of light sources, wherein each of the plurality of light sources emits light having a different wavelength;', 'a dichroic array that is configured to combine light from each of the plurality of light sources; and', 'a first lenslet array, wherein the first lenslet array is configured to receive light from the dichroic array and to generate a plurality of patterns of light corresponding to the plurality of light sources;, ' ...

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Номер записи: 69
22-01-2015 дата публикации

VISIBLE-INFRARED PLANE GRATING IMAGING SPECTROMETER

Номер: US20150021480A1
Автор: Chrisp Michael P.
Принадлежит:

An imaging spectrometer, covering the visible through infrared wavelengths, which disperses the light by a plane diffraction grating behind a wedged optical element. This design uses an achromatic doublet lens with a reflective coating on its convex back surface to produce the spectra on a flat detector. Spatial keystone distortion and spectral smile are controlled to less than one tenth of a pixel over the full wavelength range, facilitating the use of simple retrieval algorithms. 1. A visible-infrared plane grating imaging spectrometer , comprising:an entrance slit for transmitting light,an achromatic lens with a reflective back surface,a plane reflective diffraction grating immersed in a wedged optical element,an order sorting filter,a visible-infrared detector;said entrance slit, said achromatic lens with a reflective back surface, said plane reflective diffraction grating immersed in a wedged optical element, said order sorting filter, and said detector for visible and infrared radiation positioned wherein,said entrance slit transmits light to said achromatic lens with reflective back surface, which refracts light and then reflects the light from the back surface, passing back through the lens and is directed to said plane reflective diffraction grating immersed in a wedged optical element, said wedged optical element refracts the light then the reflective diffraction grating spectrally disperses and directs the light back through wedged optical element, which refracts light to said achromatic lens with a reflective back surface, said achromatic lens with a reflective back surface refracts light and then reflects the light from the back surface, passing hack through the lens and focuses it to said order sorting filter, said order sorting filter transmits the selected spectral orders to the said visible-infrared detector.2. The visible-infrared plane grating imaging spectrometer of wherein the optical powers of the said achromatic lens element with and the power ...

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Номер записи: 70
03-02-2022 дата публикации

IMAGE SENSOR AND THERMAL CAMERA DEVICE, SYSTEM AND METHOD

Номер: US20220038644A1
Автор: McAllister Justin, McBride Jefferson, Swartzendruber David, Torres Gabriel Eduardo
Принадлежит: MicaSense, Inc.

The present disclosure is directed to devices and methods for synchronizing capturing of spectral images with the capturing of thermal images. A thermal imaging device of an aerial vehicle captures a sequence of thermal image of thermal images. Capturing of spectral images by a spectral imaging device of the aerial vehicle is synchronized with the capturing of the thermal images. Irradiance data indicative of a background temperature is sensed. A digital surface model of an area of interest is generated based on the sequence of spectral images. An emissivity of a target is estimated and a temperature of a pixel of the digital surface model of the target is estimated based on the sequence of thermal images, the irradiance data indicative of the background temperature and the estimated emissivity of the target. 1. A device , comprising:thermal imaging circuitry, which, in operation, executes a sequence of thermal image capture cycles to capture a sequence of thermal images;spectral imaging circuitry, which, in operation, executes a sequence of spectral image capture cycles to capture a sequence of spectral images; andcontrol circuitry, coupled to the thermal imaging circuitry and to the spectral imaging circuitry, wherein the control circuitry, in operation, synchronizes execution of spectral image capture cycles by the spectral imaging circuitry with execution of thermal image capture cycles by the thermal imaging circuitry.2. The device of claim 1 , comprising one or more additional spectral imaging circuits claim 1 , wherein the control circuitry claim 1 , in operation claim 1 , synchronizes execution of spectral image capture cycles by the one or more additional spectral imaging circuits with the execution of the thermal image capture cycles by the thermal imaging circuitry.3. The device of wherein the spectral image circuitry and the one or more additional spectral image circuits have a common shutter.4. The device of wherein the control circuitry claim 1 , in ...

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Номер записи: 71
18-01-2018 дата публикации

METHOD TO REMOVE THE SPECTRAL COMPONENTS OF ILLUMINATION AND BACKGROUND FROM MULTI-SPECTRAL AND HYPER-SPECTRAL IMAGES

Номер: US20180020129A1
Автор: Ingram Peter, Schwartz Abraham, Sherman Phillip
Принадлежит:

The present invention is a method of removing the illumination and background spectral components thus isolating spectra from multi-spectral and hyper-spectral data cubes. The invention accomplishes this by first balancing a reference and sample data cubes for each spectra associated with each location, or pixel/voxel, in the spatial image. The set of residual spectra produced in the balancing step is used to obtain and correct a new set of reference spectra that is used to remove the illumination and background components in a sample data cube. 1. A method for removing spectral components of illumination energy and background from multi-spectral and hyper-spectral data cubes containing spatial and spectral images , the method comprising:aligning a data cube of a sample spectral camera with a data cube of a reference spectral camera;{'sub': se', 'se', 'se', 're', 're', 're, 'obtaining an empty sample data cube (x, y, λ) from said sample spectral camera directed at a first area and an empty reference data cube (x, y, λ) from said reference spectral camera directed at a second area;'}{'sub': re', 're', 're', 'se', 'se', 'se', 'R', 'R', 'R, 'subtracting a spectral intensity of each pixel of said empty reference data cube (x, y, λ) from a spectral intensity of a corresponding pixel of said empty sample data cube (x, y, λ) to obtain a residual spectral data cube (x, y, λ);'}{'sub': R', 'R', 'R', 're', 're', 're', 're', 're', 're', 'R', 'R', 'R, 'adding the spectral intensity of each pixel of the residual spectral data cube (x, y, λ) to the spectral intensity of a corresponding pixel of said empty reference data cube (x, y, λ) to obtain a resulting reference data cube [(x, y, λ)+(x, y, λ)];'}{'sub': re', 're', 're', 'R', 'R', 'R', 'se', 'se', 'se, 'subtracting the intensity of each pixel of the resulting reference data cube [(x, y, λ)+(x, y, λ)] from the intensity of a corresponding pixel of said empty sample data cube (x, y, λ) to obtain a zero order spectra data cube ...

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Номер записи: 72
22-01-2015 дата публикации

System for distributing and controlling color reproduction at multiple sites

Номер: US20150022808A1
Автор: Richard A. Holub
Принадлежит: RAH COLOR TECHNOLOGIES LLC

In the color imaging system, multiple rendering devices are provided at different nodes along a network. Each rendering device has a color measurement instrument for calibrating the color presented by the rendering device. A rendering device may represent a color display in which a member surrounds the outer periphery of the screen of the display and a color measuring instrument is coupled to the first member. The color measuring instrument includes a sensor spaced from the screen at an angle with respect to the screen for receiving light from an area of the screen. A rendering device may be a printer in which the measuring of color samples on a sheet rendered by the printer is provided by a sensor coupled to a transport mechanism which moves the sensor and sheet relative to each other, where the sensor provides light from the sample to a spectrograph. The color measuring instruments provide for non-contact measurements of color samples either displayed on a color display, or printed on a sheet, and are self-calibrating by the use of calibration references in the instrument.

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Номер записи: 73
22-01-2015 дата публикации

Split Field Spectral Imager

Номер: US20150022809A1
Автор: Marchant Alan B., Sullivan Stephanie W.
Принадлежит: Utah State University Research Foundation

An apparatus for spectroscopic Doppler imaging comprises collection and focusing optics, a field splitter configured to form a composite image from multiple fields of view, and a Fabry-Perot etalon configured to spatially modulate the incoming light in order to analyze the spectral content of the light from spatially resolved regions of a scene. Methods for Doppler imaging of a scene comprise split-field imagery and scene scanning techniques to create a spatially resolved spectral profile spectra of a scene, useful for measuring and profiling wind vectors and temperatures within the scene. 1. A Doppler imager comprising:fore-optics configured to collect radiation from two or more fields of view;intermediate optics configured to superimpose the radiation into a composite intermediate image;a Fabry-Perot etalon configured to spatially modulate the composite image into a modulated image; andaft-optics configured to focus the modulated image onto non-overlapping regions of a focal plane array.2. The Doppler imager of claim 1 , wherein the composite image comprises two or more primary images from the two or more non-parallel fields of view claim 1 , the primary images disposed side-by-side without overlapping on the composite image.3. The Doppler imager of claim 1 , wherein the fore-optics comprise two or more objective lenses claim 1 , each illuminating a separate field of view at the composite intermediate image.4. The Doppler imager of claim 1 , wherein the fore-optics comprise a field splitting mirror with two or more reflective surfaces claim 1 , the two or more reflective surfaces configured create the composite intermediate image with two or more side-by-side claim 1 , non-overlapping primary images claim 1 , an apex of the field splitting mirror positioned adjacent to the composite intermediate image plane.5. The Doppler imager of claim 1 , further comprising:collimating optics which comprise one or more lenses or mirrors configured to collimate light rays from ...

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Номер записи: 74
22-01-2015 дата публикации

SPECTROPHOTOMETER AND IMAGE PARTIAL EXTRACTION DEVICE

Номер: US20150022810A1
Автор: KOBAYASHI Tomoari
Принадлежит: SHIMADZU CORPORATION

A spectrophotometer in which output ends of optical fibers are one-dimensionally arrayed in a z-axis direction on an output end face of a fiber box. That is to say, a two-dimensional area image of a display screen picked up through input ends arranged at 10×10 lattice points on an input end face of optical fibers is converted into a one-dimensional image inside the fiber box and projected from output ends on the output end face in the form of a one-dimensional area image parallel to the z-axis. This one-dimensional area image has position information of 100 measurement points in the z-axis direction. 1. A spectrophotometer , comprising:an image-forming optical system for focusing light from a target object to form an image on a first imaging plane;a beam splitter for splitting, into two beams, the light which has passed through the image-forming optical system;a camera for taking an image of a second imaging plane on which one of the beams produced by the beam splitter forms an image;a plurality of optical waveguides having input ends arranged at different positions on the first imaging plane and output ends arrayed in a one-dimensional form;a wavelength dispersion device for dispersing a one-dimensional area image formed by rays of light exiting from the output ends of the optical waveguides, into wavelength components distributed in a direction perpendicular to the one-dimensional area; anda photo detector for detecting, by means of a plurality of two-dimensionally arrayed photo-detection elements, a two-dimensional spectral image formed by the wavelength dispersion device.2. The spectrophotometer according to claim 1 , wherein the input ends are two-dimensionally arranged on the first imaging plane.3. An image partial extraction device to be used in a spectrophotometer having: a wavelength dispersion device for dispersing rays of light respectively emitted from a plurality of points forming a one-dimensional area image into wavelength components distributed in a ...

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Номер записи: 75
22-01-2015 дата публикации

COMPACT HYPERSPECTRAL IMAGING SYSTEM

Номер: US20150022811A1
Автор: Cornell James Dixon, Herbert Stephen Edward, Santman Jeffry John, Uy Philip Madrid, Woodard Kenneth Smith
Принадлежит:

A lightweight, compact hyperspectral imaging system includes a fore-optics module and a wavelength-dispersing module. The imaging system may also include a detector, supporting electronics and a battery module. The fore-optics module may include a telescope with three or more mirrors, where the mirrors include a silver coating that provides high reflectivity over wavelengths in the visible and shortwave infrared portions of the spectrum. The modules of the imaging system may be incorporated in a housing having a longest linear dimension of 16 inches or less. The housing may be cylindrical in shape and have a length of 14 inches or less inches and a diameter of 8 inches or less. 1. A hyperspectral imaging system comprising:a housing, said housing containing a fore-optics module, a wavelength-dispersing module, and a detector, said housing having a shape defined by one or more linear dimensions, the longest of said linear dimension being 16 inches or less.2. The hyperspectral imaging system of claim 1 , wherein the longest linear dimension of said housing is 12 inches or less.3. The hyperspectral imaging system of claim 2 , wherein said fore-optics module includes a telescope.4. The hyperspectral imaging system of claim 3 , wherein said telescope is telecentric.5. The hyperspectral imaging system of claim 4 , wherein said telescope includes three or more mirrors.6. The hyperspectral imaging system of claim 5 , wherein said mirrors include a silver coating claim 5 , said silver coating enabling said mirrors to exhibit an average reflectivity of >87% in the wavelength range from 400 nm-425 nm claim 5 , an average reflectivity of >93.5% in the wavelength range from 426 nm-450 nm claim 5 , an average reflectivity of >98% in wavelength range from 451 nm-700 nm claim 5 , and an average reflectivity of >98% in the wavelength range from 701 nm-2500 nm.7. The hyperspectral imaging system of claim 3 , wherein said telescope is downward looking8. The hyperspectral imagining ...

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Номер записи: 76
28-01-2016 дата публикации

Detection and classification of light sources using a diffraction grating

Номер: US20160025568A1
Автор: Gideon Stein
Принадлежит: Mobileye Vision Technologies Ltd

A system mounted in a vehicle for classifying light sources. The system includes a lens and a spatial image sensor. The lens is adapted to provide an image of a light source on the spatial image sensor. A diffraction grating is disposed between the lens and the light source. The diffraction grating is adapted for providing a spectrum. A processor is configured for classifying the light source as belonging to a class selected from a plurality of classes of light sources expected to be found in the vicinity of the vehicle, wherein the spectrum is used for the classifying of the light source. Both the image and the spectrum may be used for classifying the light source or the spectrum is used for classifying the light source and the image is used for another driver assistance application.

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Номер записи: 77
25-01-2018 дата публикации

Control of Industrial Water Treatment Via Digital Imaging

Номер: US20180024031A1
Автор: Von Drasek William A., Wang Xuejun
Принадлежит: ECOLAB USA INC.

A method of analyzing a substrate contacting a fluid present in an industrial system is provided. The method comprises creating a series of digital images of the substrate while contacting the fluid present in the industrial system. A region of interest in the series of digital images of the substrate is defined. A corrosion feature in the region of interest in the series of digital images of the substrate is identified. The corrosion feature in the region of interest in the series of digital images of the substrate is analyzed to determine a corrosion trend of the industrial system. In certain embodiments of the method, the fluid is industrial water, and the industrial system is an industrial water system. 1. A method of analyzing a substrate contacting fluid present in an industrial system , the method comprising:creating a digital image of the substrate while the substrate contacts the fluid present in the industrial system;defining a region of interest in the digital image of the substrate;identifying a corrosion feature in the region of interest in the digital image of the substrate; andanalyzing the corrosion feature in the region of interest in the digital image of the substrate.2. A method of analyzing a substrate contacting fluid present in an industrial system , the method comprising:creating a series of digital images of the substrate while the substrate contacts the fluid present in the industrial system;defining a region of interest in the series of digital images of the substrate;identifying a corrosion feature in the region of interest in the series of digital images of the substrate; andanalyzing the corrosion feature in the region of interest in the series of digital images of the substrate to determine a corrosion trend of the industrial system.3. The method of claim 1 , further comprising moving the substrate in the industrial system to expose a second region of interest to digital imaging; and repeating the steps of the method.4. The method of ...

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Номер записи: 78
10-02-2022 дата публикации

HIGH SENSITIVITY FREQUENCY-DOMAIN SPECTROSCOPY SYSTEM

Номер: US20220042849A1
Автор: Blodgett David W., Fitch Michael J., Hendrickson Scott M., Pagan Vincent R., Wathen Jeremiah J.
Принадлежит:

A system includes first and second radiation sources, first and second detectors, a signal digitizer, a controller, and an analyzer. The first and second radiation sources generate respective first and second beams of radiation to irradiate a target. The first beam and second beams each include a first wavelength operated at a first modulation frequency and a second wavelength operated at a second modulation frequency. The first and second detectors each include a photo-sensitive element that generate first or second detection signals, a Faraday shielding enclosure, a signal amplifier, and a frequency mixer to frequency-adjust the first or second detection signals. The controller provides timing information to inform an activation scheme of the first and second radiation sources and corresponding radiation detection events at the first and second detectors. The analyzer analyzes the first and second detection signals and determines at least amplitude and phase information of the scattered radiation. 1. A system comprising: a first wavelength at a first modulation frequency; and', 'a second wavelength at a second modulation frequency;, 'first and second radiation sources configured to generate respective first and second beams of radiation to irradiate a target along respective first and second paths, each of the first and second beams comprising a photo-sensitive element configured to receive scattered radiation resulting from the first and second beams and to generate first or second detection signals respective to the first or second detectors based on the received scattered radiation;', 'a Faraday shielding enclosure;', 'a signal amplifier configured to amplify the first or second detection signals; and', 'a frequency mixer configured to frequency-adjust the first or second detection signals;, 'first and second detectors each comprisinga signal digitizer configured to receive the first and second detection signals after the frequency-adjusting to generate a ...

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Номер записи: 79
26-01-2017 дата публикации

Laser illuminated gas imaging

Номер: US20170024871A1
Автор: Derek Hutton, Matthew F. Schmidt, Tyler B. Evans
Принадлежит: Fluke Corp

Aspects of the invention generally relate to illumination gas imaging and detection. Camera systems can illuminate a target scene with light sources configured to emit absorbing and non-absorbing wavelengths with respect to a target gas. An image of the target scene illuminated with a non-absorbing wavelength can be compared to a non-illuminated image of the target scene in order to determine information about the background of the target scene. If sufficient light of the non-absorbing wavelength is scattered by the scene toward a detector, the target scene comprises an adequate background for performing a gas imaging process. A camera system can alert a user of portions of the target scene suitable or unsuitable for performing a gas imaging process. If necessary, the user can reposition the system until sufficient portions of the target scene are recognized as suitable for performing the gas imaging process.

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Номер записи: 80
24-01-2019 дата публикации

SPECTROMETER WITH TWO-DIMENSIONAL SPECTRUM

Номер: US20190025121A1
Автор: MÜNCH Stefan, OKRUSS Michael
Принадлежит:

A spectrometer arrangement with two-dimensional spectrum, comprising a first dispersing element for spectral separation of radiation in a main dispersion direction, an imaging optics for imaging the radiation entering into the spectrometer arrangement through an entrance slit in an image plane for producing a two-dimensional spectrum, and a detector array with a two-dimensional arrangement of a plurality of detector elements in the image plane, wherein a reflector, a refractor, and/or a lens array are arranged in the beam path at a location where the dispersed, monochromatic beams are separated from one another, and the reflector, the refractor, and/or the lens array have a surface in the form of a freeform surface, such that area occupied by selected images of the entrance slit in the case of different wavelengths in the image plane is optimized over a selected spectral region of the two-dimensional spectrum. 118-. (canceled)19. A spectrometer arrangement with a two-dimensional spectrum , comprising:a first dispersing element embodied to spectrally separate radiation in a main dispersion direction to yield dispersed, monochromatic beams;an imaging optics embodied to image the radiation entering into the spectrometer arrangement through an entrance slit along a beam path in an image plane for producing a two-dimensional spectrum;a detector array having a two-dimensional arrangement of a plurality of detector elements in the image plane; anda reflector, a refractor, a lens array and/or other optical element arranged in the beam path at a location where the dispersed, monochromatic beams are separated from one another,wherein the reflector, the refractor, the lens array and/or the other optical element has a freeform surface such that area occupied by selected images of the entrance slit of different wavelengths in the image plane is optimized over a selected spectral region of the two-dimensional spectrum.20. The spectrometer arrangement of claim 19 , further ...

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Номер записи: 81
23-01-2020 дата публикации

SPECTRUM PROCESSING APPARATUS AND SPECTRUM PROCESSING METHOD

Номер: US20200025612A1
Автор: JANG Hyeong Seok, KIM Sang Kyu, Lee Jun Ho
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a spectrum processing apparatus for removing noise, caused by a change in external environment, from a spectrum obtained by a spectrometer. The spectrum processing apparatus includes: a spectrometer configured to measure a first spectrum according to a change in external environment from a first object, and to measure a second spectrum for component analysis from a second object; and a processor configured to extract, based on the first spectrum, an eigenvector for each wavelength according to the change in external environment, and to obtain a final spectrum by correcting the second spectrum based on the extracted eigenvector for each wavelength. 1. A spectrum processing apparatus , comprising:a spectrometer configured to measure a first spectrum according to a change in external environment from a first object, and to measure a second spectrum for component analysis from a second object; anda processor configured to extract, based on the first spectrum, an eigenvector for each wavelength according to the change in the external environment, and to obtain a final spectrum by correcting the second spectrum based on the extracted eigenvector for each wavelength.2. The apparatus of claim 1 , wherein the external environment comprises temperature.3. The apparatus of claim 1 , wherein the first object does not comprise a component to be analyzed claim 1 , and the second object comprises the component to be analyzed.4. The apparatus of claim 1 , wherein the processor is further configured to extract the eigenvector for each wavelength by using at least one of a Principal Component Analysis (PCA) method and a Singular Value Decomposition (SVD) method.5. The apparatus of claim 1 , wherein the processor is further configured to remove noise claim 1 , caused by the external environment claim 1 , from the second spectrum based on the extracted eigenvector for each wavelength by applying a noise removal method claim 1 , the noise removal method comprising a least ...

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Номер записи: 82
23-01-2020 дата публикации

HYPERSPECTRAL SENSING SYSTEM AND PROCESSING METHODS FOR HYPERSPECTRAL DATA

Номер: US20200025613A1
Автор: LALOVIC Ivan, TUFILLARO Nicholas, ZURITA Omar
Принадлежит:

A hyperspectral sensing device may include an optical collector configured to collect light and to transfer the collected light to a sensor having spectral resolution sufficient for sensing hyperspectral data. In some examples, the sensor comprises a compact spectrometer. The device further comprises a power supply, an electronics module, and an input/output hub enabling the device to transmit acquired data (e.g., to a remote server). In some examples, a plurality of hyperspectral sensing devices are deployed as a network to acquire data over a relatively large area. Methods are disclosed for performing dark-current calibration and/or radiometric calibration on data obtained by the hyperspectral sensing device, and/or another suitable device. Data obtained by the device may be represented in a functional basis space, enabling computations that utilize all of the hyperspectral data without loss of information. 1. A computer-implemented method for predicting ground-truth data corresponding to remotely measured data , the method comprising:acquiring a ground-truth spectrum corresponding to light measured at a first location at a first time;acquiring first remote spectral data corresponding to the first location at the first time;determining first weighting coefficients of a ground-truth function representing the ground-truth spectrum in a functional basis space;determining second weighting coefficients of a first remote function representing the first remote spectral data in the functional basis space;determining a correlating relationship predicting the first weighting coefficients based on the second weighting coefficients;acquiring second remote spectral data and determining third weighting coefficients of a second remote function representing the second remote spectral data in the functional basis space; andusing the correlating relationship to predict, based on the third weighting coefficients, projected ground-truth weighting coefficients corresponding to a ...

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Номер записи: 83
23-01-2020 дата публикации

METHOD AND APPARATUS FOR ENHANCED PHOTO-THERMAL IMAGING AND SPECTROSCOPY

Номер: US20200025677A1
Автор: Kjoller Kevin, Prater Craig, Shetty Roshan
Принадлежит:

System for performing chemical spectroscopy on samples from the scale of nanometers to millimeters or more with a multifunctional platform combining analytical and imaging techniques including dual beam photo-thermal spectroscopy with confocal microscopy, Raman spectroscopy, fluorescence detection, various vacuum analytical techniques and/or mass spectrometry. In embodiments described herein, the light beams of a dual-beam system are used for heating and sensing. 1. A method for analyzing a sample , the method comprising:a. illuminating a region of the sample with a light beam of infrared radiation;b. illuminating at least a sub-region of the region of the sample with a probe light beam having a shorter wavelength than the light beam of infrared radiation;c. analyzing probe light collected from the sample to obtain measurements indicative of infrared absorption of the sub-region of the sample; andd. analyzing probe light collected from the sample to obtain measurements indicative of Raman scattering of the sub-region of the sample.2. The method of wherein c and d are performed substantially simultaneously.3. The method of wherein a-c are repeated at a plurality of wavelengths of the beam of infrared radiation.4. The method of further comprising generating a spectrum of infrared absorption by the sub-region of the sample.5. The method of wherein a-d are repeated at a plurality of locations on the sample.6. The method of wherein c and d are performed substantially simultaneously.7. The method of further comprising creating a map of infrared absorption of a at least a portion of the region of the sample and a map of Raman scattering of at least a portion of the region of the sample that is overlapping with the map of infrared absorption.8. The method of further comprising generating a map of infrared absorption of a plurality of locations on the sample.9. The method of further comprising analyzing probe light collected from the sample to construct a signal indicative ...

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Номер записи: 84
24-01-2019 дата публикации

DETECTION, CHARACTERIZATION AND PRESENTATION OF ADVERSE AIRBORNE PHENOMENA

Номер: US20190026580A1
Автор: SHEMESH Ariel
Принадлежит: Elbit Systems Ltd.

Aircraft system and method detecting and present information relating to adverse airborne phenomena along an aircraft flight route. An imaging unit that includes an IR detector and a tunable spectral filter acquires IR images of the external environment, by acquiring wideband IR images when operating in a second mode. A data analysis unit detects and determines characteristics of adverse airborne phenomena in the environment based on at least the spectral signatures of environmental features in the acquired narrowband IR images. A display unit dynamically displays a visual representation of the detected adverse airborne phenomenon and its determined characteristics, overlaid onto a view of the external environment displayed to an operator of the aircraft. The visual representation may include variable visual attributes representing respective categories of characteristics of the detected adverse airborne phenomenon. 1. An aircraft system for detecting and presenting information relating to adverse airborne phenomena along a flight route of the aircraft , the system comprising: an IR detector, configured to detect IR radiation; and', 'a tunable spectral filter (TSF), configured to selectively transmit at least one IR wavelength band of incident light to said IR detector,', 'wherein said imaging unit is configured to acquire wideband IR images of said environment when operating in a first mode, and configured to acquire narrowband IR images of said environment, each of said narrowband IR images respective of a different IR spectral band, when operating in a second mode;, 'a data acquisition unit, comprising an imaging unit configured to acquire a plurality of infrared (IR) images of the external environment of said aircraft, said imaging unit comprisinga data analysis unit, configured to receive and process the IR images acquired by said imaging unit, to detect and determine at least one characteristic of at least one adverse airborne phenomenon in said environment, ...

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Номер записи: 85
28-01-2021 дата публикации

Spectroscopic Camera

Номер: US20210025754A1
Автор: KUDO Kei, Matsushita Tomonori, Nishimura Teruyuki
Принадлежит:

A spectroscopic camera includes an interference filter including a pair of reflection films and an imaging device that captures image light passing through the pair of reflection films. The interference filter is provided with a marker that changes the characteristic in accordance with which the image light passes, and the marker is provided in a position where the marker overlaps with the optical path of the image light that passes through the pair of reflection films. 1. A spectroscopic camera comprising:an interference filter including a pair of reflection films; andan imaging device that captures image light passing through the pair of reflection films,wherein the interference filter is provided with a marker that changes a characteristic in accordance with which the image light passes, and the marker is provided in a position where the marker overlaps with an optical path of the image light that passes through the pair of reflection films.2. The spectroscopic camera according to claim 1 ,wherein the marker provided in the interference filter is formed of two or more markers located at respective locations.3. The spectroscopic camera according to claim 1 ,wherein the marker provided in the interference filter is formed of three or more markers located at respective locations.4. The spectroscopic camera according to claim 3 , further comprising:an angle calculator that calculates an angle of inclination of the interference filter with respect to an optical axis of the imaging device based on the position of the marker contained in a captured image captured with the imaging device, anda corrector that corrects a wavelength of light received at each pixel of the imaging device based on the angle of inclination.5. The spectroscopic camera according to claim 1 ,wherein the marker is a recess provided in any of the reflection films.6. The spectroscopic camera according to claim 1 ,wherein the marker is a light blocker that blocks part of the optical path.7. The ...

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Номер записи: 86
28-01-2021 дата публикации

SPECTRAL ANALYSIS SYSTEM, MOBILE DEVICE HAVING A SPECTRAL ANALYSIS SYSTEM, METHOD FOR DETERMINING A CORRECTION FUNCTION FOR THE IMAGING CORRECTION OF A SPECTRUM CAPTURED BY A SPECTRAL ANALYSIS SYSTEM, AND COMPUTER PROGRAM

Номер: US20210025755A1
Автор: GRUEGER Heinrich, KNOBBE Jens
Принадлежит:

Spectral analysis system for capturing a spectrum with an optic that forms an optical path. The spectral analysis system is configured to apply a correction function to a captured spectrum so as to obtain a modified spectrum. 1. Spectral analysis system for capturing a spectrum with an optic that forms an optical path ,wherein spectral analysis system is configured to apply a correction function to a captured spectrum so as to acquire a modified spectrum.2. Spectral analysis system according to claim 1 , wherein the correction function is generated by a method for determining a correction function for a spectrum captured by a spectral analysis system claim 1 , comprising:capturing a reference spectrum of a reference radiation source with the spectral analysis system so as to acquire a captured reference spectrum, wherein the spectrum of the reference radiation source comprises a peak with a spectral width that is smaller than a spectral resolution performance of the spectral analysis system,creating a correction function from the captured reference spectrum so that, when applying the correction function to captured spectra captured by the spectral analysis system, modified spectra that are less impaired by errors of an optic of the spectral analysis system are acquired.3. Spectral analysis system according to claim 1 , wherein the correction function is acquired by measuring one or several measured impulse responses.4. Spectral analysis system according to claim 1 , wherein the correction function is present in the form of a matrix that claim 1 , when applied to the captured spectrum claim 1 , results in the modified spectrum.5. Spectral analysis system according to claim 4 , wherein the matrix is an inverse of a matrix built from one or several measured impulse responses.6. Spectral analysis system according to claim 4 , wherein the matrix is an inverse of a matrix that distributes each spectral sample value of an actual or undisturbed spectrum with a given impulse ...

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Номер записи: 87
29-01-2015 дата публикации

Simplified Compressive Sensing Spectral Imager

Номер: US20150029503A1
Автор: McMackin Lenore
Принадлежит:

A method for designing a spectral sensing device. The method includes: (1) performing computational operations on a computer, wherein the computational operations determine the positions of diffracted orders of an optical system model that models at least an array of light modulating elements and a diffraction grating, wherein the diffracted orders correspond to respective spectral components of input light to the optical system model, wherein the positions of the diffracted orders are determined at a target plane of the optical system model; and (2) storing the positions of the diffracted orders in a memory, wherein the positions determine corresponding locations for light detectors in the spectral sensing device. The spectral sensing device may be assembled by modifying an existing single pixel camera, i.e., by adding the diffraction grating and adding the light detectors respectively at said positions of the diffracted orders.

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Номер записи: 88
23-01-2020 дата публикации

MEANS AND PROCESS FOR CREATING WORKS HAVING THE CHARACTERISTIC LOOK AND FEEL OF FILMS GENERATED VIA THE TECHNICOLOR® PROCESS

Номер: US20200026158A1
Автор: Schroeder Andrew
Принадлежит:

An apparatus for the creation of works having the same creative look and feel as works filmed via the original Technicolor® three-strip filming process comprising: a camera, a lens mounted on said camera, a step-up, lens-filter adapter ring mounted on said lens of said camera, a diffusion filter mounted on said step-up, lens-filter adapter ring, said diffusion filter capable of mimicking the effect of traditional silver nitrate film used in the Technicolor® process, and an optical band-stop filter mounted on said the diffusion filter, said optical band-stop filter capable of preventing the transmission of light having a 570-600 nm wavelength and permitting no more than 20% light from being transmitted through it. 1. An apparatus for the creation of works having the same creative look and feel as works filmed via the original Technicolor® three-strip filming process comprising: a camera , a lens mounted on said camera , a step-up , lens-filter adapter ring mounted on said lens of said camera , a diffusion filter mounted on said step-up , lens-filter adapter ring , said diffusion filter capable of mimicking the effect of traditional silver nitrate film used in the Technicolor® process , and an optical band-stop filter mounted on said the diffusion filter , said optical band-stop filter capable of preventing the transmission of light having a 570-600 nm wavelength and permitting no more than 20% light from being transmitted through it.2. A wide angle dispersing light fixture comprising a clear bowl-shaped outer housing having an inner surface , and an outer surface mirrorized with RUSTOLEUM® MIRROR EFFECT , silver , SKU NO. 26772 , and a candelabra style fixture capable of receiving a multiplicity of light bulbs , said light bulbs being Hypericon® A21 LED BULBS having an extended CRI of 94 or higher , and capable of providing R-9 and an unbroken spectrum of light capable of working in daylight balance between 4800 and 5600 kelvin.3. A chromatic exposure meter ...

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Номер записи: 89
01-02-2018 дата публикации

AN APPARATUS FOR MULTI-MODE IMAGING OF EYE

Номер: US20180028059A1
Автор: BHATT Mahabaleswara Ram, COTHURU Santosh Kumar, Rao Shyam Vasudeva, TIMOTHY Poston
Принадлежит: FORUS HEALTH PRIVATE LIMITED

The present disclosure relates to an apparatus for multi-mode imaging of an eye. The apparatus integrates at least two modes namely OCT, hyper-/multi-spectral imaging, and RGB/IR. The apparatus captures high resolution and larger dynamic range OCT and hyper-/multi-spectral images, in a high dynamic range multi-wavelength image data. The apparatus captures the images through an optical path sharing one or more optical elements and a detection unit. The captured images are processed by a computing device associated with the apparatus for either OCT or hyper-spectral imaging. 1. An apparatus for multi-mode imaging of an eye , the apparatus comprising:a first source component configured to generate an illumination light;a second source component configured to generate a white light; receive the illumination light from the first source component;', 'split the illumination light into a first light and a second light, wherein the first light is projected onto a reflecting mirror and the second light is projected onto the eye;', 'receive the first light reflected from the reflecting mirror and second light reflected from the eye; and', 'combine the reflected first light and the reflected second light to form an interference pattern;, 'a coupler configured toa polarizing mirror configured to receive the white light from the second source component and project the white light onto the eye through a focusing lens;a first digital micro mirror device, comprising one or more first mirrors, configured to receive the white light reflected from the eye through the polarizing mirror and scatter the reflected white light; receiving the interference pattern from the coupler when a first mode is active; or', 'receiving the reflected white light from the first digital micro mirror device when a second mode is active; and, 'a combining component configured to perform at least one of receive at least one of the interference pattern or the white light from the combining component and ...

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Номер записи: 90
17-02-2022 дата публикации

WEARABLE DEVICE COUPLED TO TIME-OF-FLIGHT IMAGING SYSTEM

Номер: US20220047167A1
Автор: Islam Mohammed N.
Принадлежит:

An optical system measures one or more physiological parameters with a wearable device that includes a light emitting diode (LED) source including a driver and a plurality of semiconductor sources that generate an output optical light. One or more lenses deliver a lens output light to tissue of a user. A detection system receives at least a portion of the lens output light reflected from the tissue and generates an output signal having a signal-to-noise ratio. The detection system comprises a plurality of spatially separated detectors and an analog to digital converter. The detection system increases the signal-to-noised ratio by comparing a first signal with the LEDs off to a second signal with the LEDs on. An imaging system including a Bragg reflector is pulsed and has a near infrared wavelength. A beam splitter splits the light into a sample arm and a reference arm to measure time-of-flight. 1. An optical system , comprising:a wearable device for measuring one or more physiological parameters, the wearable device adapted to be placed on a wrist or an ear of a user, including a light source comprising a driver and a plurality of semiconductor sources that are light emitting diodes, the light emitting diodes configured to generate an output optical light having one or more optical wavelengths;the wearable device comprising one or more lenses configured to receive at least a portion of the output optical light and to deliver a lens output light to tissue;the wearable device further comprising a detection system configured to receive at least a portion of the lens output light reflected from the tissue and to generate an output signal having a signal-to-noise ratio, wherein the detection system is configured to be synchronized to the light source;wherein the detection system comprises a plurality of detectors that are spatially separated from each other, and wherein at least one analog to digital converter is coupled to at least one of the spatially separated ...

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Номер записи: 91
04-02-2016 дата публикации

SPECTRAL IMAGING USING SINGLE-AXIS SPECTRALLY DISPERSED ILLUMINATION

Номер: US20160033330A1
Автор: Bar-Ilan Yair, Yelin Dvir
Принадлежит:

A technique for spectral imaging using a two-dimensional illumination pattern having spectral dispersion in one axis. The spectral imaging method involves the use of spectrally dispersed illumination, thereby allowing the use of higher intensity source illumination than prior art spectral encoding methods, thus providing high-speed, high-resolution acquisition of spectral data from specimens that cannot tolerate high illumination intensities or that require fast imaging for avoiding motion artifacts. The technique is demonstrated by capturing spectral data cubes of a finger using short exposure durations and a high signal-to-noise ratio. 1. A method for performing spectral imaging of a target sample , comprising:providing a beam of illumination having a range of spectral intensities;spectrally dispersing said beam in a first direction, such that said dispersed beam is spectrally spread along said target sample;focusing said spectrally dispersed beam onto said target sample only in said first direction, such that said dispersed beam illuminates a two dimensional area of said target sample; andimaging said target sample in two dimensions as said illumination beam is scanned relative to said sample in said first direction.2. The method of claim 1 , comprising the further step of assembling a spectral cube incorporating also the spectral data for each imaged location.3. The method of claim 1 , wherein the illumination of a two dimensional area of said target sample enables the use of a higher intensity illumination source than with spectrally encoded serial imaging claim 1 , without engendering damage to said target sample.4. The method of claim 1 , wherein the parallel imaging of an entire area of said target sample enables faster scans to be achieved than with spectrally encoded serial imaging.5. The method of claim 1 , wherein the parallel imaging of an entire area of said target sample enables a higher signal to noise ratio image to be obtained than with spectrally ...

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Номер записи: 92
04-02-2016 дата публикации

Raster optic device for optical hyper spectral scanning

Номер: US20160033393A1
Автор: Juan Ivaldi, Maxim Frayer, Peng Zou
Принадлежит: Smiths Detection Inc

A spectroscopic scanning device, a portable spectroscopic scanning system, and methods for using the spectroscopic scanning device are described that include at least one focusing element configured to collect light, a beam-steering element configured to direct a portion of the collected light from the at least one focusing element, and a detector configured to receive the directed light from the beam-steering element, wherein the beam-steering element is operable to successively select portions of light from a plurality of locations within its field of regard.

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Номер записи: 93
01-02-2018 дата публикации

HYPERSPECTRAL IMAGER METHOD AND APPARATUS

Номер: US20180031422A1
Автор: Chlingaryan Anna, Lowe Alex, Melkumyan Arman, Murphy Richard J., Nguyen Dai Bang, Scheding Steven, WISHART Stuart
Принадлежит:

A compact hyperspectral imager adapted to operate in harsh environments and to conduct post acquisition signal processing to provide automated and improved hyperspectral processing results is disclosed. The processing includes luminance and brightness processing of captured hyperspectral images, hyperspectral image classification and inverse rendering to produce luminance invariance image processing. 1. A hyperspectral imager for imaging external environments , the imager including:an optical line scanner unit adapted to perform line scans of a mining environment via rotation thereof;an environmental enclosure surrounding the optical line scanner unit providing a first degree of temperature and dust isolation from the environment, the enclosure mounted on a rotatable platform;a rotatable platform attached to the environmental enclosure, adapted to rotate the environmental enclosure unit and optical line scanner unit under the control of an electronic control system;a thermo-electric cooler unit attached to the environmental enclosure for cooling the enclosure, thereby maintaining the enclosure at a substantially stable temperature during operations; andan electronic control system for controlling the thermo electric cooler unit, and the optical line scanner unit, and the rotation system for the capture of hyperspectral images by said imager.2. A hyperspectral imager as claimed in further including a dessicant port and holding bay for holding a desiccant for providing humidity control to said enclosure.3. A hyperspectral imager as claimed in wherein:said thermo electric cooler unit is mounted on top of the enclosure;said rotatable platform is driven by a cable chain to manage cable movement and prevent breakage; andsaid environmental enclosure includes at least one optical aperture for projection of an optical lens of the optical line scanner unit.425.-. (canceled)26. A hyperspectral imager as claimed in further including an image processing unit interconnected to ...

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Номер записи: 94
04-02-2021 дата публикации

Methods, Systems and Computer Program Products for Calculating MetaKG Signals for Regions Having Multiple Sets of Optical Characteristics

Номер: US20210030277A1
Автор: Chen Cheng, Ferguson, Hempstead William, JR. Thomas Bruce, KIM SUNGHAN
Принадлежит:

Methods for calculating a MetaKG signal are provided. The method including illuminating a region of interest in a sample with a near-infrared (NIR) light source and/or a visible light source. The region of interest includes a sample portion and background portion, each having a different set of optical characteristics. Images of the region of interest are acquired and processed to obtain metadata associated with the acquired images. MetaKG signals are calculated for the region of interest and for the background. The MetaKG signal for the background is used to adjust the MetaKG signal for the region of interest to provide a final adjusted MetaKG signal for the region of interest. 2. The method of claim 1 , wherein the first wavelength is a wavelength in a near-infrared range and the second wavelength is a wavelength in a visible range.3. The method of : calculating a background MetaKG signal for both near-infrared (NIR) and visible wavelengths to provide a background MetaKG signal NIR and a background MetaKG signal visible;', 'adjusting the background MetaKG signal NIR using the background MetaKG signal visible if necessary;, 'wherein calculating the background MetaKG signal further comprises calculating a MetaKG signal for the region of interest for visible wavelengths to provide a MetaKG signal visible for the region of interest;', 'observing the calculated the MetaKG signal visible for the region of interest for any motion artifact present therein;', 'selecting a window of frames for NIR analysis for the region of interest;', 'calculating a MetaKG signal for the region of interest for NIR wavelengths to provide a MetaKG signal NIR for the region of interest using the selected window; and', 'normalizing the MetaKG signal visible for the region of interest using the background MetaKG signal visible to provide the final adjusted MetaKG signal for the region of interest., 'wherein calculating the MetaKG signal for the region of interest comprises4. The method of claim ...

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Номер записи: 95
01-05-2014 дата публикации

HYPERSPECTRAL IMAGING SYSTEM, MONOLITHIC SPECTROMETER AND METHODS FOR MANUFACTURING THE MONOLITHIC SPECTROMETER

Номер: US20140118738A1
Автор: Comstock, II Lovell Elgin, Wiggins Richard Lynton
Принадлежит: CORNING INCORPORATED

A hyperspectral imaging system, a monolithic Offner spectrometer, and two methods for manufacturing the monolithic Offner spectrometer are described herein. In one embodiment, the monolithic Offner spectrometer comprises a transmissive material which has: (1) an entrance surface which has an opaque material applied thereto, where the opaque material has a portion removed therefrom which forms a slit; (2) a first surface which has a first reflective coating applied thereto to form a first mirror; (3) a second surface which has a second reflective coating applied thereto to form a diffraction grating; (4) a third surface which has a third reflective coating applied thereto to form a second mirror; and (5) an exit surface. 1. A hyperspectral imaging system for imaging a remote object , the hyperspectral imaging system comprising:a housing;fore optics, attached to said housing, where the fore optics are configured to receive a beam from the remote object;a detector attached to said housing; and a transmissive material which has:', 'an entrance surface which has an opaque material applied thereto, where the opaque material has an opening therein which forms a slit that is configured for receiving and passing a portion of a beam received from the fore optics;', 'a first surface which has a first reflective coating applied thereto to form a first mirror, where the first mirror is configured for receiving and reflecting the beam that passed through said slit;', 'a second surface which has a second reflective coating applied thereto to form a diffraction grating, where the diffraction grating is configured for receiving, diffracting and reflecting the beam received from the first mirror;', 'a third surface which has a third reflective coating applied thereto to form a second mirror, where the second mirror is configured for receiving and reflecting the diffracted beam received from the diffraction grating; and', 'an exit surface for passing there through the diffracted beam ...

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Номер записи: 96
31-01-2019 дата публикации

SPECTROMETER INCLUDING LIGHT FILTER

Номер: US20190033129A1
Автор: KIM Hyochul, ROH Younggeun
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A spectrometer is provided and includes a substrate including a transparent material, and a filter array disposed on a first surface of the substrate and including light filters configured to reflect first light. The spectrometer further includes a first light detector into which the first light reflected by the light filters enters, the first light detector being disposed on a second surface of the substrate. 1. A spectrometer comprising:a substrate comprising a transparent material;a filter array disposed on a first surface of the substrate and comprising light filters configured to reflect first light; anda first light detector into which the first light reflected by the light filters enters, the first light detector being disposed on a second surface of the substrate.2. The spectrometer of claim 1 , wherein the light filters are further configured to respectively transmit first lights of different wavelength bands.3. The spectrometer of claim 2 , wherein the light filters are further configured to reflect second lights of wavelength bands different than the first lights of different wavelength bands.4. The spectrometer of claim 2 , further comprising a second light detector into which second light that is passed through the filter array enters claim 2 , the second light detector being disposed on the filter array.5. The spectrometer of claim 4 , wherein the light filters are arranged in a 1-dimensional pattern or a 2-dimensional mosaic pattern.6. The spectrometer of claim 4 , wherein each of the first light detector and the second light detector comprises light detector units respectively corresponding to the light filters.7. The spectrometer of claim 4 , wherein each of the first light detector and the second light detector comprises any one or any combination of an image sensor claim 4 , a charge coupled device (CCD) claim 4 , and a photo diode.8. The spectrometer of claim 4 , wherein any one or any combination of the light filters comprises more than two ...

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Номер записи: 97
31-01-2019 дата публикации

SPECTROMETER

Номер: US20190033134A1
Автор: Poem Elion, WALMSLEY Ian
Принадлежит:

A spectrometer for temporally separating electromagnetic radiation () includes a cavity () having first and second reflecting mirrors (). The first mirror () has an aperture () arranged to allow electromagnetic radiation () to be input into the cavity (). The spectrometer also includes an imaging device () between the first and second mirrors () that defines an optical axis of the cavity () and performs spatial Fourier transforms of the electromagnetic radiation (). The first and/or second mirrors () has a normal that is arranged at a non-parallel angle to the optical axis, such that the position and/or angle of incidence of electromagnetic radiation () on the second mirror is shifted after each round trip. The second mirror () allows a wavelength component () of the electromagnetic radiation to be output from the cavity () when the position and/or angle of incidence of the electromagnetic radiation on the second mirror () after one or more round trips of the cavity () exceeds a threshold. 1. A spectrometer for temporally separating input electromagnetic radiation , the spectrometer comprising:a cavity comprising a first mirror and a second mirror arranged to reflect input electromagnetic radiation therebetween, wherein the first mirror comprises an aperture arranged to allow electromagnetic radiation to be input into the cavity through the aperture; andan imaging device arranged in the path taken by the electromagnetic radiation between the first and second mirrors, wherein the imaging device defines an optical axis of the cavity and the imaging device is arranged to perform a spatial Fourier transform of the input electromagnetic radiation from the aperture in the first mirror onto the second mirror and to perform a spatial Fourier transform of the reflection of the electromagnetic radiation from the second mirror back onto the first mirror;wherein at least a portion of one or both of the first and second mirrors has a normal that is arranged at a non-parallel ...

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Номер записи: 98
01-02-2018 дата публикации

Optical system and method for ultrashort laser pulse characterization

Номер: US20180034227A1
Автор: Cojocaru Crina Maria, Maia Da Silva Francisco Jose, Paiva Rebelo Cerejo Crespo Helder Manuel, Romero-Muniz Rosa Maria, Sola-Larranaga Inigo Juan, Trull-Silvestre Jose Francisco
Принадлежит:

The optical system comprises: means for introducing a controlled negative or positive chirp to an incoming ultrashort laser pulse to be characterized; a nonlinear optical medium through which said chirped ultrashort laser pulse is propagated, wherein as a result of said propagation: different chirp values are introduced in the ultrashort laser pulse at different propagation distances along the nonlinear optical medium, and a transverse nonlinear signal is generated in a direction perpendicular to the propagation axis; analyzing means configured for recording a single-shot spectral image of said generated transverse nonlinear signal; and a processing module comprising one or more processors configured to execute a numerical iterative algorithm to said single-shot spectral image to retrieve the electric field, amplitude and phase, of the ultrashort laser pulse. 1. An optical system for ultrashort laser pulse characterization , comprising:means for introducing a controlled chirp, negative or positive, to an incoming ultrashort laser pulse to be characterized; different chirp values are introduced by the dispersion of the nonlinear optical medium itself in the ultrashort laser pulse at different propagation distances along the nonlinear optical medium, and', 'a transverse nonlinear signal is generated in a direction perpendicular to the propagation axis from said ultrashort laser pulse having different chirp values introduced by the corresponding propagation distance within the nonlinear optical medium said transverse nonlinear signal being a transverse second harmonic generation signal,, 'a nonlinear optical medium, with normal or anomalous dispersion, through which said chirped ultrashort laser pulse is propagated, said nonlinear optical medium having the property of generating a nonlinear signal from the ultrashort laser pulse and emitting the generated nonlinear signal transversally to the propagation direction, wherein as a result of said propagation analyzing ...

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Номер записи: 99
04-02-2021 дата публикации

ADJUSTABLE HYPERSPECTRAL DETECTION CHIP ENHANCED BY MULTI-RESONANCE PLASMONIC MECHANISM

Номер: US20210033462A1
Автор: SHAN Feng, SU Dan, XIONG Meng, Zhang Tong, Zhang Xiaoyang
Принадлежит: SOUTHEAST UNIVERSITY

An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism. The detection chip consists of an array of metal nanonail resonator detection units. Each detection unit () comprises: a bottom electrode (), a semiconductor material layer (), a spacer layer (), a nanonail array (), a control material layer (), a top electrode (), a peripheral control signal (), and a driving circuit (). The positional relationship from top to bottom is the top electrode (), the control material layer (), the nanonail array (), the spacer layer (), the semiconductor material layer (), and the bottom electrode (). The nanonail array () is loaded inside the control material layer (), and the peripheral control signal () and the driving circuit () are connected to both sides of the control material layer (). 1. An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism , comprising:an array of metal nanonail resonance cavity detection units,wherein each detection unit comprises: a bottom electrode, a semiconductor material layer, a spacer layer, a nanonail array, a control material layer, a top electrode, a peripheral control signal, and a driving circuit; and the positional relationship from top to bottom is the top electrode, the control material layer, the nanonail array, the spacer layer, the semiconductor material layer, the bottom electrode,wherein the nanonail array is loaded inside the control material layer, the peripheral control signal and the driving circuit are connected both sides of the control material layer.2. The adjustable hyperspectral detection chip enhanced by the multi-resonance plasmonic mechanism according to claim 1 , wherein a size of the detection unit ranges from 200 nanometers to 4 microns claim 1 , a distance between adjacent detection units ranges from 500 nanometers to 2 microns claim 1 , the array of detection units is a k×t two-dimensional area array claim 1 , wherein values of k and t are ...

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Номер записи: 100