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1. WO2019025759 - CODED APERTURE SPECTRAL IMAGING DEVICE

Publication Number WO/2019/025759
Publication Date 07.02.2019
International Application No. PCT/GB2018/052064
International Filing Date 23.07.2018
IPC
G01J 3/28 2006.01
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
G01J 3/02 2006.01
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
G01J 3/18 2006.01
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
12Generating the spectrum; Monochromators
18using diffraction elements, e.g. grating
CPC
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 3/18
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
12Generating the spectrum; Monochromators
18using diffraction elements, e.g. grating
G01J 3/2803
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
2803using photoelectric array detector
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
  • OXFORD UNIVERSITY INNOVATION LIMITED [GB]/[GB]
Inventors
  • KASIM, Muhammad Firmansyah
  • NORREYS, Peter
Agents
  • BARKER BRETTELL LLP
Priority Data
1712357.101.08.2017GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CODED APERTURE SPECTRAL IMAGING DEVICE
(FR) DISPOSITIF D’IMAGERIE SPECTRALE À OUVERTURE CODÉE
Abstract
(EN)
An imaging spectrometer (100) is provided, comprising: an entrance opening (101) configured to admit light to the spectrometer (100), a coded aperture (120), at least one dispersive element (111, 112), a two-dimensional array detector (130), and a plurality of converging optical elements (121, 122, 123, 124). The plurality of converging optical elements (121, 122, 123, 124) are configured to focus light from the entrance opening (101) at the coded aperture (120), and to focus light from the coded aperture (120) at the detector (130). The coded aperture (120) is arranged to modulate light from the entrance opening (101) in at least one of the spatial and spectral domain. The at least one dispersive element (111, 112) comprises a dispersive element (111, 112) between the coded aperture (120) and the detector (130). The at least one converging optical element (121, 122, 123, 124) comprises at least one concave reflector.
(FR)
La présente invention concerne un spectromètre d’imagerie (100) qui comprend : une ouverture d’entrée (101) configurée pour recevoir de la lumière dans le spectromètre (100), une ouverture codée (120), au moins un élément dispersif (111, 112), un détecteur matriciel bidimensionnel (130), et une pluralité d’éléments optiques convergents (121, 122, 123, 124). La pluralité d’éléments optiques convergents (121, 122, 123, 124) sont configurés pour focaliser la lumière provenant de l’ouverture d’entrée (101) au niveau de l’ouverture codée (120), et pour focaliser la lumière provenant de l’ouverture codée (120) au niveau du détecteur (130). L’ouverture codée (120) est agencée pour moduler la lumière provenant de l’ouverture d’entrée (101) dans au moins l’un du domaine spatial et spectral. L’au moins un élément dispersif (111, 112) comprend un élément dispersif (111, 112) entre l’ouverture codée (120) et le détecteur (130). L’au moins un élément optique convergent (121, 122, 123 124) comprend au moins un réflecteur concave.
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