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1. US20160273963 - Tunable multi-band spectro-polarimeter

Office United States of America
Application Number 14658562
Application Date 16.03.2015
Publication Number 20160273963
Publication Date 22.09.2016
Grant Number 09513162
Grant Date 06.12.2016
Publication Kind B2
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
G01V 8/10
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
8Prospecting or detecting by optical means
10Detecting, e.g. by using light barriers
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 COMPANY
Inventors Robert Bruce Herrick
John F. Silny
David M. Zimmerman
Joseph G. Shanks
Joseph P. Filice
Agents Lando & Anastasi, LLP
Title
(EN) Tunable multi-band spectro-polarimeter
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.

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