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1. WO2019055771 - COMPACT SPECTROMETER DEVICES, METHODS, AND APPLICATIONS

Publication Number WO/2019/055771
Publication Date 21.03.2019
International Application No. PCT/US2018/051061
International Filing Date 14.09.2018
IPC
G01N 21/31 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
CPC
G01J 2003/2826
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
2823Imaging spectrometer
2826Multispectral imaging, e.g. filter imaging
G01J 3/0208
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
0205Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
0208using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
G01J 3/0229
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
0205Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
0229using masks, aperture plates, spatial light modulators or spatial filters, e.g. reflective filters
G01J 3/0256
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
0256Compact construction
G01J 3/0291
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
0291Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
G01J 3/2823
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
2823Imaging spectrometer
Applicants
  • ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA [US]/[US]
Inventors
  • LIANG, Rongguang
Agents
  • TEHRANCHI, Babak
Priority Data
62/558,62714.09.2017US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) COMPACT SPECTROMETER DEVICES, METHODS, AND APPLICATIONS
(FR) DISPOSITIFS DE SPECTROMÈTRE COMPACT, PROCÉDÉS ET APPLICATIONS
Abstract
(EN) Methods, devices and systems provide improved spectral imaging and detection and can be implemented as compact, light-weight and low-cost devices. An example device includes a mask that includes a plurality of apertures and positioned to receive light from an object of interest. A first lenslet array is positioned to receive light that passes through the plurality of apertures. Each lenslet of the first lenslet array receives the light from a corresponding aperture and produces collimated light that is incident on a dispersive element, such as a diffraction grating or a prism, which produces a plurality of spectrally separated components. A second lenslet array receives the spectrally separated components and focuses each of the spectrally separated components onto an image plane, where a sensor is located. The information obtained from the sensor can be used to determine or analyze spectral characteristics of the object, which can be in gaseous form.
(FR) L'invention concerne des procédés, des dispositifs et des systèmes qui fournissent une imagerie spectrale et une détection améliorées et peuvent être mis en œuvre sous la forme de dispositifs compacts, légers et économiques. Un dispositif donné à titre d'exemple comprend un masque qui comprend une pluralité d'ouvertures et positionné pour recevoir de la lumière provenant d'un objet d'intérêt. Un premier réseau de microlentilles est positionné pour recevoir la lumière qui passe à travers la pluralité d'ouvertures. Chaque microlentille du premier réseau de microlentilles reçoit la lumière provenant d'une ouverture correspondante et produit une lumière collimatée qui est incidente sur un élément dispersif, tel qu'un réseau de diffraction ou un prisme, qui produit une pluralité de composants séparés au plan spectral. Un second réseau de microlentilles reçoit les composants séparés au plan spectral et focalise chacun des composants séparés au plan spectral sur un plan d'image, sur lequel est situé un capteur. Les informations obtenues par le capteur peuvent être utilisées pour déterminer ou analyser des caractéristiques spectrales de l'objet, qui peut être sous forme gazeuse.
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