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1. EP3271695 - TUNABLE MULTI-BAND SPECTRO-POLARIMETER

Office European Patent Office
Application Number 15813168
Application Date 23.11.2015
Publication Number 3271695
Publication Date 24.01.2018
Publication Kind B1
IPC
G01J 3/28
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
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 3/36
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
30Measuring the intensity of spectral lines directly on the spectrum itself
36Investigating two or more bands of a spectrum by separate detectors
G01J 4/04
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
4Measuring polarisation of light
04Polarimeters using electric detection means
CPC
G01J 3/0224
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
0224using polarising or depolarising elements
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
G01J 3/36
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
30Measuring the intensity of spectral lines directly on the spectrum itself
36Investigating two or more bands of a spectrum by separate detectors
G01J 4/04
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
4Measuring polarisation of light
04Polarimeters using electric detection means
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 3/2803
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
Applicants RAYTHEON CO
Inventors HERRICK ROBERT BRUCE
SILNY JOHN F
ZIMMERMAN DAVID M
SHANKS JOSEPH G
FILICE JOSEPH P
Designated States
Priority Data 2015062129 23.11.2015 US
201514658562 16.03.2015 US
Title
(DE) ABSTIMMBARES MEHRBANDIGES SPEKTROPOLARIMETER
(EN) TUNABLE MULTI-BAND SPECTRO-POLARIMETER
(FR) SPECTRO-POLARIMÈTRE ACCORDABLE À BANDES MULTIPLES
Abstract
(EN)
Methods and apparatus for remote, passive detection of underwater objects using combined spectral and polarimetric imaging. In one example, a tunable multi-band spectro- polarimeter includes an imaging detector array that receives electromagnetic radiation from a viewed scene, a plurality of tunable spectral filters configured to filter the electromagnetic radiation into at least first and second spectral bands, and a plurality of polarization filters configured to filter each of the first and second spectral bands into at least two different polarization states, a first region of the detector array receiving the first spectral band and producing first polarimetric image data, and a second region of the detector array simultaneously receiving the second spectral band and producing second polarimetric image data, and a controller that receives and processes the first and second polarimetric image data to detect a target object in the viewed scene.

(FR)
L'invention concerne des procédés et des appareils pour la détection passive et à distance d'objets sous-marins par imageries polarimétrique et spectrale combinées. Dans un exemple, un spectro-polarimètre accordable à bandes multiples comprend un réseau de détecteurs d'imagerie qui reçoit un rayonnement électromagnétique provenant d'une scène visualisée, une pluralité de filtres spectraux accordables conçus pour filtrer le rayonnement électromagnétique dans au moins des première et seconde bandes spectrales, et une pluralité de filtres de polarisation conçus pour filtrer chacune des première et seconde bandes spectrales dans au moins deux états de polarisation différents, une première région du réseau de détecteurs recevant la première bande spectrale et produisant des premières données d'image polarimétriques, et une seconde région du réseau de détecteurs recevant simultanément la seconde bande spectrale et produisant des secondes données d'image polarimétriques, et un contrôleur qui reçoit et traite les première et seconde données d'image polarimétriques pour détecter un objet cible dans la scène visualisée.

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