CN107228711B - Compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device and method - Google Patents
Compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device and method Download PDFInfo
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G—PHYSICS
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The present invention discloses a kind of compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device and method, includes along incident light to preposition optical system, microlens array, full Polarization Modulation module, filter arrays and the planar array detector set gradually；Full Polarization Modulation module includes along incident light to the first birefringent prism, the first half-wave plate, the second birefringent prism, the second half-wave plate, third birefringent prism, third half-wave plate, the 4th birefringent prism and the linear polarizer set gradually, they are close to mutually place, and the photosurface that filter arrays are close to planar array detector is placed；The photosurface of planar array detector is placed in the position of focal plane of microlens array perpendicular to detection device optical axis；Planar array detector is connected with data acquisition processing system.One frame image of snapshot of the present invention, the corresponding two-dimensional space polarization spectrum image of whole Stokes polarization parameters can be obtained by being handled using Fourier's demodulating algorithm.
Description
Technical field
The invention belongs to optical remote sensing field of detecting, are related to a kind of polarization imaging dress for polarized radiation field of detecting
It sets, more particularly to a kind of compact miniature fast illuminated channel modulation that can obtain the full polarization information of two-dimensional space target in real time polarizes entirely
Spectral imaging detecting device and detection method.
Background technology
The important remote sensing information such as the space containing target, spectrum and polarization, can be used not only in the electromagnetic wave of object radiation
The characteristics such as the form of inverting target and physical chemistry, moreover it is possible to remove ambient noise provide the surface of high contrast, pattern, shade and
The information such as roughness.To make space, spectrum and polarization three-dimensional information have complementary advantages, the energy of target in enhancing detection complex background
Power has come into being and has integrated the novel forward position remote sensing that three-dimensional information obtains technical ability：Polarization spectrum imaging technology.
Its data product both can be considered the corresponding multidimensional polarization image of each wavelength, be also considered as the corresponding spectrum picture of each polarization state,
To improve target acquisition, identification and classification efficiency and precision have certain potentiality, military surveillance, earth resource generaI investigation,
Many necks such as environmental health monitoring and surveilliance, natural calamity forecast, Atmospheric Survey, astronomical observation, the bionical, biomedical diagnostic of machine vision
It domain all will be with important application value and foreground.
Polarization spectrum imaging technology is merged by Polarization Modulation module and spectrum module, itself both rear work
Feature decides the former characteristic.If dividing in the way of the polarization and spectral information for obtaining two-dimensional space target, Polarization Modulation
Module and spectrum module can be divided into sequential keyboard encoder and fast illuminated two major classes【1,2】.Currently, most of polarization spectrum imaging skills
Art all uses sequence scanning mode (such as Frame projection, push-broom type or window sweep formula) to obtain the polarization spectrum image of two-dimensional scene, needs
The multiple image extracting data that is obtained from different moments simultaneously recombinates the polarization spectrum image of two-dimensional space target.The technology being related to
Mainly sequential keyboard encoder Polarization Modulation module is combined with fast illuminated spectrum module.
According to the bidirectional reflectance distribution function of vector form, the polarized radiation of two-dimensional space target point in the remote sensing of outfield
Cloth has time gate and azimuthal effect.Therefore the temporal resolution of timing acquisition technology will be limited, and be unsuitable for dynamic or quick
The unstability of variation targets, air or ambient enviroment can influence image quality, need accurate space positioning system.Compared to it
Under, the polarization spectrum that fast illuminated imaging technique then can be with real-time detection target in particular moment particular azimuth is distributed, and is not only carried
High working efficiency, also can effectively avoid the influence brought by environmental change when multiple measurement, it is ensured that image, spectrum, polarization
Consistency.
Recent snapshot formula polarization spectrum imaging mainly carries out in such a way that dispersion spectrum imaging coordinates full Polarization Modulation, than
Such as：Channel Polarization Modulation computation layer spectral imaging technology【3】, channel polarization modulated image divide spectral imaging technology【4,5】, product
Divide visual field spectrum polarization imaging technology【6,7】Etc., these systems are relatively huge, complicated.
Channel polarization Modulation based on prism has the advantages that compact-sized micromation【8-10】, but be only capable of measuring
Monochromatic full polarization information；Spectral imaging technology based on filter arrays also has the advantages that compact-sized【11-15】, but
It is to be only capable of measure spectrum information.
Bibliography
【1】J.S.Tyo,D.L.Goldstein,D.B.Chenault,and J.A.Shaw,"Review of passive
imaging polarimetry for remote sensing applications,"Appl.Opt.45,5453-5469
(2006).
【2】N.Hagen and M.W.Kudenov,"Review of snapshot spectral imaging
technologies,"Opt.Eng.52,090901(2013).
【3】D.S.Sabatke,A.M.Locke,M.R.Descour,E.L.Dereniak,J.P.Garcia,
T.K.Hamilton,and R.W.McMillan,"Snapshot imaging spectropolarimeter,"
Opt.Eng.41,1048-1054(2002).
【4】U.S. patent Nos, " Image mapped spectropolarimetry ", Authorization Notice No.：US
9239263B2.
【5】J.Craven-Jones,B.M.Way,J.Hunt,M.W.Kudenov,and J.A.Mercier,"
Thermally stable imaging channeled spectropolarimetry,"Proc.SPIE 8873,88730J
(2013).
【6】Chinese invention patent, " fast illuminated integral view field imaging polarizes hyperspectral detection device entirely ", Authorization Notice No.：
CN 103592030B.
【7】H.J.Hoeijmakers,M.L.J.Arts,F.Snik,C.U.Keller,D.M.Stam,and
J.M.Kuiper,"Design trade-off and proof of concept for LOUPE,the Lunar
Observatory for Unresolved Polarimetry of Earth,"Opt.Express 24,21435-21453
(2016).
【8】U.S. patent Nos, " IMAGING POLARIMETRY ", U.S. Patent number：US 7,336,360 B2.
【9】K.Oka and T.Kaneko,"Compact complete imaging polarimeter using
birefringent wedge prisms,"Opt.Express 11,1510-1519(2003).
【10】H.Luo,K.Oka,N.Hagen,T.Tkaczyk,and E.L.Dereniak,"Modeling and
optimization for a prismatic snapshot imaging polarimeter,"Appl.Opt.45,8400-
8409(2006).
【11】R.Shogenji,Y.Kitamura,K.Yamada,S.Miyatake,J.Tanida,“Multispectral
imaging using compact compound optics,”Opt.Express 12(8),1643(2004).
【12】B.Geelen,N.Tack,A.Lambrechts,“A Snapshot Multispectral Imager
with Integrated,Tiled Filters and Optical Duplication,”SPIE Vol.8613,861314
(2013).
【13】U.S. patent Nos, " Snapshot spectral imaging systems and methods ", the U.S.
The patent No.：US 8081244 B2.
【14】U.S. patent Nos, " Snapshot spectral imaging of the eye ", U.S. Patent number：US
8109634 B2.
【15】P.Lapray,X.Wang,J.Thomas,and P.Gouton,“Multispectral Filter
Arrays:Recent Advances and Practical Implementation,”Sensors 14,21626-21659
(2014).
Invention content
The purpose of the present invention is to provide a kind of compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection devices
And method, the compact and fast illuminated advantage modulated using channel Polarization Modulation and filter spectral realize two-dimensional space
The high spatial resolution real time imagery of target polarization radiation information, there is no information mismatches etc. caused by the time difference and azimuthal variation
Problem is not influenced by environmental change factor.
To achieve the goals above, the present invention adopts the following technical scheme that：
Compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device includes along incident light to setting gradually
Preposition optical system, microlens array, full Polarization Modulation module, filter arrays and planar array detector；Full Polarization Modulation module
Include along incident light to set gradually the first birefringent prism, the first half-wave plate, the second birefringent prism, the second half-wave plate,
Third birefringent prism, third half-wave plate, the 4th birefringent prism and linear polarizer, they are close to mutually place, optical filter
Linear polarizer is close on the front and back two sides of array respectively and the photosurface of planar array detector is placed；The photosurface of planar array detector is vertical
It is placed in the position of focal plane of microlens array in detection device optical axis；Planar array detector is connected with data acquisition processing system.
Further, preposition optical system includes along incident light to the object lens, space diaphragm and collimating mirror set gradually；It is accurate
The front focal plane of straight mirror is overlapped with field stop position.
Further, filter arrays are made of the discrete narrow-band-filter blade unit of several different centre wavelengths, each narrow
Bore with filter unit is consistent with each bore of sub-lens unit in microlens array, in the plane perpendicular to detection device
The center of interior each narrow-band-filter blade unit and the center of each sub-lens unit correspond.
Further, filter arrays are a linear variable filters, per the arrangement of a line lens in microlens array
The swash direction that direction is filtered with phase co-wavelength in linear variable filter has angle, angle to be more than 0 °, is less than 180 °.
Further, detection device optical axis is horizontally disposed, and z-axis is parallel to optical axis, and z-axis positive direction is by preposition optical system
It is directed toward planar array detector；Positive direction of the y-axis is straight up；X-axis constitutes orthogonal coordinate system perpendicular to y-axis and z-axis, x-axis, y-axis and z-axis
And meet the right-hand rule；The main cross section of first birefringent prism and the second birefringent prism is in yz planes and is rectangle,
In the y-direction, short side is in the z-direction for long side；The main cross section of third birefringent prism and the 4th birefringent prism in xz planes and
For rectangle, in the x-direction, short side is in the z-direction for long side；The birefringent material phase of first birefringent prism and the second birefringent prism
With and center overall thickness it is identical, the birefringent material of third birefringent prism and the 4th birefringent prism is identical and center overall thickness
It is identical.
Further, the first birefringent prism is made of the first prism wedge and the second prism wedge；Second birefringence rib
Mirror is made of third prism wedge and the 4th prism wedge；Third birefringent prism is by the 5th prism wedge and the 6th prism wedge
Composition；4th birefringent prism is made of the 7th prism wedge and the 8th prism wedge；First prism wedge and the 4th wedge-shaped rib
The center thickness of mirror is identical, narrows along y forward directions, broadens along y negative senses；The center thickness of second prism wedge and third prism wedge
It is identical, it broadens along y forward directions, narrows along y negative senses；The center thickness of 5th prism wedge and the 8th prism wedge is identical, along x forward directions
Narrow, broadens along x negative senses；The center thickness of 6th prism wedge and the 7th prism wedge is identical, narrows along x forward directions, along x negative senses
It broadens.
Further, the fast axle of the first prism wedge and third prism wedge in the yz planes of main cross section with y-axis at big
The opposite angle of small equal direction；The fast axle of second prism wedge and the 4th prism wedge is parallel with x-axis in xz planes；The
The fast axle of five prism wedges and the 7th prism wedge is in the xz planes of main cross section with x-axis at the opposite folder in direction equal in magnitude
Angle；The fast axle of 6th prism wedge and the 8th prism wedge is parallel with y-axis in yz planes.
Further, the fast and slow axis of the first half-wave plate and third half-wave plate is located in x/y plane, their fast axle is and x-axis
Angle at 45 °；The fast and slow axis of second half-wave plate is located in x/y plane, its fast axle is with x-axis at 22.5 ° of angles；Linear polarizer
The saturating direction that shakes is located in x/y plane, with x-axis angle at 45 °.
Further, after removing the second half-wave plate, by the fast axis direction of third birefringent prism, the speed of third half-wave plate
The direction that shakes thoroughly of axis direction, the fast axis direction of the 4th birefringent prism and linear polarizer is whole using detection device optical axis as rotary shaft
45 degree of rotation.
Further, filter arrays are a linear variable filters；Microlens array is in parallelogram lever
Arrangement mode, the (n+1)th row lens of microlens array shift up relative to the n-th row lens so that every in microlens array
The swash direction that the orientation of a line lens filters with phase co-wavelength in linear variable filter has angle, angle to be more than 0 °,
Less than 180 °；N is positive integer；Alternatively, microlens array is the arrangement mode in square frame, microlens array it is whole relative to
Linear variable filter rotates so that the orientation in microlens array per a line lens is identical with linear variable filter
The swash direction that wavelength filters has angle, angle to be more than 0 °, is less than 180 °.
Further, the bore shape of each lenticule in microlens array is rectangular, round or hexagon.
The detection method of compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device, includes the following steps：
The light that two-dimensional space target is sent out sequentially enters preposition optical system and becomes directional light, through microlens array by light
Beam focuses on planar array detector, data acquisition processing system control into line convergence, through full Polarization Modulation module and filter arrays
It is at a time dry after Polarization Modulation under a certain wavelength to obtain tested two dimension target for one frame image of planar array detector snapshot processed
Strength information is related to, then data acquisition processing system to data recombinate and be reconstructed all using Fourier transformation demodulating algorithm
The corresponding two-dimensional space spectrum picture of Stokes polarization parameters.
Further, a branch of incident light, which is penetrated, is cut into through the first birefringent prism and the second birefringent prism in yz plane interior angles
The extended line of two the first emergent lights of beam, two the first emergent lights of beam converges on the photosurface of planar array detector, and convergent point is in
On the extended line of incident light；Wherein a branch of first emergent light is through third birefringent prism and the 4th birefringent prism in x/y plane
Angle cuts into two the second emergent lights of beam, and the extended line of two the second emergent lights of beam converges on the photosurface of planar array detector, and meeting
Accumulation is on the extended line of incident light；A branch of first emergent light is flat in xy through third birefringent prism and the 4th birefringent prism
Face interior angle cuts into two beam third emergent lights, and the extended line of two beam third emergent lights converges on the photosurface of planar array detector,
And convergent point is on the extended line of incident light.
Further, after a branch of incident light injects the first birefringent prism, it is orthogonal in yz planes by angle to cut into two beams
Emergent light is polarized, and polarization direction is located in yz and xz planes；Two beam emergent lights its polarization side after the first half-wave plate
To exchange, it is then directly entered the second birefringent prism, beam splitting does not occur, refraction effect only occurs；Then two beam emergent lights
Polarization direction rotates 45 degree by the second half-wave plate；After wherein a branch of emergent light enters third birefringent prism, the quilt in xz planes
Angle cuts into two the first emergent lights of beam cross-polarization, and polarization direction is located in xz and yz planes, two the first emergent lights of beam
It is exchanged through third half-wave plate rear polarizer direction, is then directly entered the 4th birefringent prism, beam splitting does not occur, it is existing that refraction only occurs
As；After another beam emergent light enters third birefringent prism, in xz planes cutting into two beam cross-polarizations second by angle is emitted
Light, and polarization direction is located in xz and yz planes, two the second emergent lights of beam are exchanged through third half-wave plate rear polarizer direction, are connect
It and is directly entered the 4th birefringent prism, beam splitting does not occur, refraction effect only occurs；Finally from the 4th birefringent prism outgoing four
The polarised light of beam polarization direction pairwise orthogonal, and polarization direction and the saturating of linear polarizer shake direction into positive and negative 45 jiaos；Four bundles light passes through
After linear polarizer normalizes polarization direction, same point is converged on the photosurface of planar array detector, and the point is in incident light
On the extended line of beam；Four bundles light mutually superimposed interference forms four beam fringes.
Further, filter arrays are linear variable filters, per the orientation of a line lens in microlens array
There is angle in the swash direction filtered with phase co-wavelength in filter arrays so that the difference of target in the often row array image of acquisition
The swash that spatial position experienced phase co-wavelength filters；The different spatial for extracting target in certain row array image is undergone
Phase co-wavelength swash optical filtering intensity, carry out computing with words, obtain the spectrum two-dimensional image under the wavelength；Other row array of figure
As doing analogy processing, the two-dimension spectrum image under multiple wavelength is obtained.
Further, the full Polarization Modulation module of a branch of incident light injection is divided into four bundles light, and four bundles light is focused at face battle array and visits
Same point on the photosurface of device is surveyed, and the point is on the extended line of incident beam.
Compared with prior art, the present invention its remarkable advantage is：
1, a frame image of snapshot two-dimensional space target, you can obtain the polarization spectrum information of each target element, retain simultaneously
The spatial information of each target element, temporal resolution is high, avoids the influence brought by environmental change when multiple measurement, and two dimension is empty
Between data correlation it is effective, work efficiency is high.
2, high spatial resolution polarization imaging may be implemented in the stringent self-focusing of the four bundles light of prism beam splitting.Filter arrays
The ripe linear variable filter of commercialization can be used, it is easy to implement without complicated processing technology.
As a result of the full Polarization Modulation module in different-waveband channel, one frame image of snapshot can be tested the present invention
The full polarization encoder interference strength image information of target at a time a certain wave band, first passes through data recombination and obtains different wave length
Under interference strength information, recycling Fourier's demodulating algorithm to handle, can to obtain whole Stokes polarization parameters corresponding
Two-dimensional space spectrum picture.It is not necessarily to rotation, tuning or step device and related precision positioning relative to using timing acquisition technology
Device has the features such as temporal resolution is high, becomes suitable for dynamic or soon target, can avoid jittering noise and environmental change influence；
Relative to based on divide amplitude, point aperture, point focal plane fast illuminated polarization imaging device for, which matches without image precision
Quasi- technology, and spatial resolution can be consistent with detector.The present invention is in astronomical observation, space exploration, earth remote sensing, machine
The fields such as device vision and biomedical diagnostic have potential application.
Prism polarization art is combined by the present invention with filter arrays technology, expands prism structure and filter arrays knot
Structure realizes the polarization spectrum imaging technology of compact micromation, realizes the fast illuminated acquisition of integration of image, spectrum, polarization.
The image that the present invention is combined as a result of lenticule and filter arrays replicates and spectral filtering module and group
The full channel of polarization modulation module of prismatic decomposition is closed, one frame image of snapshot can obtain certain tested of two dimension target at a time
Interference strength information of the wave band through channel modulation, whole Stokes polarizations can be obtained by being handled using Fourier's demodulating algorithm
The corresponding two-dimensional space polarization spectrum image of parameter.The present invention astronomical observation, space exploration, earth remote sensing, machine vision and
The fields such as biomedical diagnostic have potential application.
Description of the drawings
Fig. 1 is the structural schematic diagram of the compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device of the present invention.
Fig. 2 a be microlens array regularly arranged in rectangular frame in Fig. 1 with by the different several filters of centre wavelength
The formed filter arrays schematic diagram of filter unit, each sub-lens center and the center of each filter unit correspond.
Fig. 2 b are microlens arrays and linear gradient filter array regularly arranged in parallelogram lever in Fig. 1
Schematic diagram.
Fig. 2 c are microlens arrays and linear gradient filter array signal regularly arranged in rectangular frame in Fig. 1
Figure, microlens array rotate an angle relative to linear variable filter in x/y plane, and angle is more than 0 °, is less than 180 °.
Fig. 3 is the fast and slow axis side of the fast axis direction, each half-wave plate of each prism unit in the full Polarization Modulation module in Fig. 1
To the direction schematic diagram of shaking thoroughly of, linear polarizer.
Fig. 4 is the side cross-sectional structural schematic diagram that the light that target is sent out in Fig. 1 passes through detection device.
Fig. 5 is that light beam passes through the beam splitting process schematic of each polarizer main cross section in full Polarization Modulation module in Fig. 1.
In figure, 10 be preposition optical system, 11 be full Polarization Modulation module, 12 is planar array detector, and 13 acquire for data
Processing system, 14 be microlens array, 15 be filter arrays；101 it is object lens, 102 be field stop, 103 is collimating mirror；
111 be the first birefringent prism, 115 be the first half-wave plate, 112 be the second birefringent prism, 116 be the second half-wave plate, 113 be
Third birefringent prism, 117 be third half-wave plate, 114 be the 4th birefringent prism, 118 be linear polarizer, they are tight mutually
It is placed with and sets, the photosurface that linear polarizer is close to planar array detector is placed；1111 be the first prism wedge, 11112 be the second wedge shape
Prism, 1121 be third prism wedge, 1122 be the 4th prism wedge, 1131 be the 5th prism wedge, 1132 be the 6th wedge shape
Prism, 1141 be the 7th prism wedge, 1142 be the 8th prism wedge.
Specific implementation mode
Refering to Figure 1, a kind of compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device of the present invention,
Include along incident light to preposition optical system 10, microlens array 14, full Polarization Modulation module 11, the optical filter battle array set gradually
Row 15 and planar array detector 12；Full Polarization Modulation module 11 include along incident light to the first birefringent prism 111 set gradually,
First half-wave plate 115, the second birefringent prism 112, the second half-wave plate 116, third birefringent prism 113, third half-wave plate
117, the 4th birefringent prism 114 and linear polarizer 118, they are close to mutually place, the front and back two sides of filter arrays 15
The photosurface for being close to linear polarizer (118) and planar array detector 12 respectively is placed；The photosurface of planar array detector 12 is perpendicular to spy
Survey the position of focal plane that device optical axis is placed in microlens array 14；Planar array detector 12 is connected with data acquisition processing system 13
It connects.
Fig. 2 a are please referred to, filter arrays 15 are made of the discrete narrow-band-filter blade unit of several different centre wavelengths,
The bore of each narrow-band-filter blade unit is consistent with each bore of sub-lens unit in microlens array 14, perpendicular to detection device
Plane in each narrow-band-filter blade unit center and each sub-lens unit center correspond.
It please refers to shown in Fig. 2 b and Fig. 2 c, filter arrays 15 are a linear variable filters, in microlens array 14
The swash direction that orientation per a line lens filters with phase co-wavelength in linear variable filter has angle, angle to be more than
0 °, it is less than 180 °.
Shown in please referring to Fig.1 to Fig.3, detection device optical axis is horizontally disposed, and z-axis is parallel to optical axis, and z-axis positive direction is by preceding
It sets optical system 10 and is directed toward planar array detector 12；Positive direction of the y-axis is straight up；X-axis is perpendicular to y-axis and z-axis, x-axis, y-axis and z-axis
It constitutes orthogonal coordinate system and meets the right-hand rule；The main cross section of first birefringent prism 111 and the second birefringent prism 112 exists
In yz planes and it is rectangle, in the y-direction, short side is in the z-direction for long side；Third birefringent prism 113 and the 4th birefringent prism
114 main cross section is in xz planes and is rectangle, and in the x-direction, short side is in the z-direction for long side；First birefringent prism, 111 He
The birefringent material of second birefringent prism 112 is identical and center overall thickness is identical, and third birefringent prism 113 and the 4th is two-fold
The birefringent material for penetrating prism 114 is identical and center overall thickness is identical.
It please refers to shown in Fig. 3, the first birefringent prism 111 is by 1112 groups of the first prism wedge 1111 and the second prism wedge
At；Second birefringent prism 112 is made of third prism wedge 1121 and the 4th prism wedge 1122；Third birefringent prism
113 are made of the 5th prism wedge 1131 and the 6th prism wedge 1132；4th birefringent prism 114 is by the 7th prism wedge
1141 and the 8th prism wedge 1142 form；First prism wedge 1111 is identical with the center thickness of the 4th prism wedge 1122,
Narrow along y forward directions, broadens along y negative senses；Second prism wedge 1112 is identical with the center thickness of third prism wedge 1121, along y
Forward direction broadens, and narrows along y negative senses；5th prism wedge 1131 is identical with the center thickness of the 8th prism wedge 1142, along x forward directions
Narrow, broadens along x negative senses；6th prism wedge 1132 is identical with the center thickness of the 7th prism wedge 1141, becomes along x forward directions
It is narrow, it broadens along x negative senses.
It please refers to shown in Fig. 3, the fast axle of the first prism wedge 1111 and third prism wedge 1121 is flat in main cross section yz
With y-axis at the opposite angle in direction equal in magnitude in face；The fast axle of second prism wedge 1112 and the 4th prism wedge 1122 is equal
It is parallel with x-axis in xz planes；The fast axle of 5th prism wedge 1131 and the 7th prism wedge 1141 is in main cross section xz planes
It is interior with x-axis at the angle that direction equal in magnitude is opposite；The fast axle of 6th prism wedge 1132 and the 8th prism wedge 1142 exists
It is parallel with y-axis in yz planes.
The fast and slow axis of first half-wave plate 115 and third half-wave plate 117 is located in x/y plane, their fast axle with x-axis at
45 ° of angles；The fast and slow axis of second half-wave plate 116 is located in x/y plane, its fast axle is with x-axis at 22.5 ° of angles；Linear polarizer
118 direction that shakes thoroughly is located in x/y plane, with x-axis angle at 45 °.
Detection device of the present invention, after removing the second half-wave plate 116, by the fast axis direction of third birefringent prism 113, third
The direction entirety of shaking thoroughly of the speed axis direction of half-wave plate 117, the fast axis direction of the 4th birefringent prism 114 and linear polarizer 118
45 degree are rotated by rotary shaft of detection device optical axis；Detecting function and method are constant.
It please refers to shown in Fig. 4 to Fig. 5, a kind of compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection of the present invention
The detection method of device, includes the following steps：
The light that two-dimensional space target is sent out sequentially enters preposition optical system 10 and becomes directional light, through microlens array 14
By light beam into line convergence, planar array detector 12, data acquisition are focused on through full Polarization Modulation module 11 and filter arrays 15
Processing system 13 controls one frame image of planar array detector 12 snapshot, obtains tested two dimension target and at a time passes through under a certain wavelength
Interference strength information after Polarization Modulation, then data acquisition processing system 13 to data carry out recombinate and utilize Fourier transformation
Demodulating algorithm reconstructs the corresponding two-dimensional space spectrum picture of whole Stokes polarization parameters.
A branch of incident light is penetrated is cut into two through the first birefringent prism 111 and the second birefringent prism 112 in yz plane interior angles
The extended line of the first emergent light of beam, two the first emergent lights of beam converges on the photosurface of planar array detector 12, and convergent point is in
On the extended line of incident light；Wherein a branch of first emergent light is through third birefringent prism 113 and the 4th birefringent prism 114 in xy
Plane interior angle cuts into two the second emergent lights of beam, and the extended line of two the second emergent lights of beam converges at the photosurface of planar array detector 12
On, and convergent point is on the extended line of incident light；A branch of first emergent light is through third birefringent prism 113 and the 4th birefringence
Prism 114 cuts into two beam third emergent lights in x/y plane interior angle, and the extended line of two beam third emergent lights converges at face battle array detection
On the photosurface of device 12, and convergent point is on the extended line of incident light.
After a branch of incident light injects the first birefringent prism 111, in yz planes cutting into two beam cross-polarizations by angle goes out
Light is penetrated, and polarization direction is located in yz and xz planes；Two beam emergent lights its polarization direction after the first half-wave plate 115 is mutual
It changes, is then directly entered the second birefringent prism 112, beam splitting does not occur, refraction effect only occurs；Then two beam emergent lights is inclined
Direction shake by 45 degree of the second half-wave plate 116 rotation；After wherein a branch of emergent light enters third birefringent prism 113, in xz planes
It is interior that two the first emergent lights of beam cross-polarization are cut by angle, and polarization direction is located in xz and yz planes, two beams first go out
It penetrates light to exchange through 117 rear polarizer direction of third half-wave plate, is then directly entered the 4th birefringent prism 114, beam splitting does not occur, only
Refraction effect occurs；After another beam emergent light enters third birefringent prism 113, it is orthogonal in xz planes by angle to cut into two beams
The second emergent light is polarized, and polarization direction is located in xz and yz planes, two the second emergent lights of beam are after third half-wave plate 117
Polarization direction exchanges, and is then directly entered the 4th birefringent prism 114, beam splitting does not occur, and refraction effect only occurs；Finally from
Four birefringent prisms 114 are emitted the polarised light of four beam polarization direction pairwise orthogonals, and polarization direction shakes with the saturating of linear polarizer 118
Direction is at positive and negative 45 jiaos；Four bundles light is after linear polarizer 118 normalizes polarization direction, the meeting on the photosurface of planar array detector 12
Gather in same point, and the point is on the extended line of incident beam；Four bundles light mutually superimposed interference forms four beam interference items
Line.
Claims (10)
1. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device, which is characterized in that including along incident light to
The preposition optical system (10) that sets gradually, microlens array (14), full Polarization Modulation module (11), filter arrays (15) and
Planar array detector (12)；
Full Polarization Modulation module (11) includes along incident light to the first birefringent prism (111), the first half-wave plate set gradually
(115), the second birefringent prism (112), the second half-wave plate (116), third birefringent prism (113), third half-wave plate
(117), the 4th birefringent prism (114) and linear polarizer (118), they are close to mutually place, filter arrays (15)
Linear polarizer (118) is close on front and back two sides respectively and the photosurface of planar array detector (12) is placed；
The photosurface of planar array detector (12) is placed in the position of focal plane of microlens array (14) perpendicular to detection device optical axis；Face
Array detector (12) is connected with data acquisition processing system (13).
2. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 1, feature
It is, filter arrays (15) are made of the discrete narrow-band-filter blade unit of several different centre wavelengths, each spike filter
The bore of unit is consistent with each bore of sub-lens unit in microlens array (14), each in the plane perpendicular to detection device
The center of narrow-band-filter blade unit and the center of each sub-lens unit correspond.
3. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 1, feature
It is, filter arrays (15) are a linear variable filters, per the orientation of a line lens in microlens array (14)
The swash direction filtered with phase co-wavelength in linear variable filter has angle, angle to be more than 0 °, is less than 180 °.
4. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 1, feature
It is, detection device optical axis is horizontally disposed, and z-axis is parallel to optical axis, and z-axis positive direction is directed toward face battle array by preposition optical system (10)
Detector (12)；Positive direction of the y-axis is straight up；X-axis constitutes orthogonal coordinate system and symbol perpendicular to y-axis and z-axis, x-axis, y-axis and z-axis
Close the right-hand rule；
The main cross section of first birefringent prism (111) and the second birefringent prism (112) is in yz planes and is rectangle, long
In the y-direction, short side is in the z-direction on side；The main cross section of third birefringent prism (113) and the 4th birefringent prism (114) is in xz
In plane and it is rectangle, in the x-direction, short side is in the z-direction for long side；First birefringent prism (111) and the second birefringent prism
(112) birefringent material is identical and center overall thickness is identical, third birefringent prism (113) and the 4th birefringent prism
(114) birefringent material is identical and center overall thickness is identical.
5. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 4, feature
It is, the first birefringent prism (111) is made of the first prism wedge (1111) and the second prism wedge (1112)；Second is two-fold
Prism (112) is penetrated to be made of third prism wedge (1121) and the 4th prism wedge (1122)；Third birefringent prism (113) by
5th prism wedge (1131) and the 6th prism wedge (1132) composition；4th birefringent prism (114) is by the 7th prism wedge
(1141) it is formed with the 8th prism wedge (1142)；
First prism wedge (1111) is identical with the center thickness of the 4th prism wedge (1122), narrows along y forward directions, along y negative senses
It broadens；Second prism wedge (1112) is identical with the center thickness of third prism wedge (1121), broadens along y forward directions, along y negative senses
Narrow；5th prism wedge (1131) is identical with the center thickness of the 8th prism wedge (1142), narrows along x forward directions, along x negative senses
It broadens；6th prism wedge (1132) is identical with the center thickness of the 7th prism wedge (1141), narrows along x forward directions, along x negative senses
It broadens；
The fast axle of first prism wedge (1111) and third prism wedge (1121) is in the yz planes of main cross section with y-axis at size
The opposite angle of equal direction；The fast axle of second prism wedge (1112) and the 4th prism wedge (1122) in xz planes with
X-axis is parallel；The fast axle of 5th prism wedge (1131) and the 7th prism wedge (1141) in the xz planes of main cross section with x-axis at
The opposite angle in direction equal in magnitude；The fast axle of 6th prism wedge (1132) and the 8th prism wedge (1142) is in yz planes
It is interior parallel with y-axis.
6. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 4, feature
Be, the fast and slow axis of the first half-wave plate (115) and third half-wave plate (117) is located in x/y plane, their fast axle with x-axis at
45 ° of angles；The fast and slow axis of second half-wave plate (116) is located in x/y plane, its fast axle is with x-axis at 22.5 ° of angles；Linear polarizer
(118) the direction that shakes thoroughly is located in x/y plane, with x-axis angle at 45 °.
7. compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device according to claim 1, feature
It is, after removal the second half-wave plate (116), by the fast axis direction of third birefringent prism (113), third half-wave plate (117)
The direction that shakes thoroughly of speed axis direction, the fast axis direction of the 4th birefringent prism (114) and linear polarizer (118) is whole to detect dress
It is that rotary shaft rotates 45 degree to set optical axis.
8. the compact miniature fast illuminated channel modulation full-polarization spectrum imaging detection device described in any one of claim 1 to 7
Detection method, which is characterized in that include the following steps：
The light that two-dimensional space target is sent out sequentially enters preposition optical system (10) and becomes directional light, through microlens array (14)
By light beam into line convergence, planar array detector (12) is focused on through full Polarization Modulation module (11) and filter arrays (15), number
Control one frame image of planar array detector (12) snapshot according to acquisition processing system (13), obtain tested two dimension target at a time certain
Interference strength information under one wavelength after Polarization Modulation, then data acquisition processing system (13) to data recombinate and profit
With the corresponding two-dimensional space spectrum picture of Fourier transformation demodulating algorithm reconstruct whole Stokes polarization parameters.
9. detection method according to claim 8, which is characterized in that a branch of incident light is penetrated through the first birefringent prism
(111) and the second birefringent prism (112) is cut into two the first emergent lights of beam, the extension of two the first emergent lights of beam in yz plane interior angles
Line converges on the photosurface of planar array detector (12), and convergent point is on the extended line of incident light；Wherein a branch of first goes out
It penetrates light and cuts into the outgoing of two beams second in x/y plane interior angle through third birefringent prism (113) and the 4th birefringent prism (114)
The extended line of light, two the second emergent lights of beam converges on the photosurface of planar array detector (12), and convergent point is in incident light
On extended line；A branch of first emergent light is through third birefringent prism (113) and the 4th birefringent prism (114) in x/y plane interior angle
Two beam third emergent lights are cut into, the extended line of two beam third emergent lights converges on the photosurface of planar array detector (12), and
Convergent point is on the extended line of incident light.
10. detection method according to claim 8, which is characterized in that a branch of incident light injects the first birefringent prism
(111) after, two beam cross-polarization emergent lights are cut by angle in yz planes, and polarization direction is located at yz and xz planes
It is interior；Two beam emergent lights its polarization direction after the first half-wave plate (115) exchanges, and is then directly entered the second birefringent prism
(112), beam splitting does not occur, refraction effect only occurs；Then the polarization direction of two beam emergent lights is rotated by the second half-wave plate (116)
45 degree；After wherein a branch of emergent light enters third birefringent prism (113), two beam cross-polarizations are cut by angle in xz planes
First emergent light, and polarization direction is located in xz and yz planes, two the first emergent lights of beam are retrodeviated through third half-wave plate (117)
Shake direction exchange, be then directly entered the 4th birefringent prism (114), beam splitting do not occur, only occur refraction effect；Another beam goes out
It penetrates after light enters third birefringent prism (113), two the second emergent lights of beam cross-polarization is cut by angle in xz planes, and partially
The direction that shakes is located in xz and yz planes, and two the second emergent lights of beam are exchanged through third half-wave plate (117) rear polarizer direction, then
It is directly entered the 4th birefringent prism (114), beam splitting does not occur, refraction effect only occurs；Finally from the 4th birefringent prism
(114) it is emitted the polarised light of four beam polarization direction pairwise orthogonals, and polarization direction shakes direction at just with the saturating of linear polarizer (118)
Minus 45 jiaos；Four bundles light converges at after linear polarizer (118) normalizes polarization direction on the photosurface of planar array detector (12)
Same point, and the point is on the extended line of incident beam；Four bundles light mutually superimposed interference forms four beam fringes.
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| CN108489614A (en) * | 2018-03-08 | 2018-09-04 | 中国科学院光电技术研究所 | Compact-structure type full-Stokes vector polarization imaging device based on double-adhesive digital coding birefringent crystal slice |
| CN110081978A (en) * | 2019-04-29 | 2019-08-02 | 南京理工大学 | A kind of multispectral polarization imaging device of transient state and its imaging method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879097A (en) * | 2012-09-21 | 2013-01-16 | 西安交通大学 | Circular polarization hyperspectral image detection system |
| CN105157835A (en) * | 2015-09-15 | 2015-12-16 | 中国科学院光电研究院 | Snapshot-type multispectral image multiple-splitting spectral imaging method and spectral imager |
| CN105404014A (en) * | 2015-12-24 | 2016-03-16 | 南京理工大学 | Full Stokes polarization modulation imaging beam splitter with high spatial resolution |
| CN105547477A (en) * | 2016-01-12 | 2016-05-04 | 广东工业大学 | Polarization interference imaging spectrum system and imaging method thereof |
| CN105606217A (en) * | 2016-01-08 | 2016-05-25 | 西安交通大学 | Image-spectrum-polarization-state integrated obtaining apparatus and method |
| CN106802184A (en) * | 2017-02-22 | 2017-06-06 | 西安交通大学 | The fast compact noise immunity type optical field imaging full-polarization spectrum detection device of illuminated and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0208869D0 (en) * | 2002-04-18 | 2002-05-29 | Qinetiq Ltd | Imaging spectrometer |
| HUP1100482A2 (en) * | 2011-09-05 | 2013-04-29 | Eotvos Lorand Tudomanyegyetem | Method for cloud base height measuring and device for polarization measuring |
-
2017
- 2017-07-13 CN CN201710571047.7A patent/CN107228711B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879097A (en) * | 2012-09-21 | 2013-01-16 | 西安交通大学 | Circular polarization hyperspectral image detection system |
| CN105157835A (en) * | 2015-09-15 | 2015-12-16 | 中国科学院光电研究院 | Snapshot-type multispectral image multiple-splitting spectral imaging method and spectral imager |
| CN105404014A (en) * | 2015-12-24 | 2016-03-16 | 南京理工大学 | Full Stokes polarization modulation imaging beam splitter with high spatial resolution |
| CN105606217A (en) * | 2016-01-08 | 2016-05-25 | 西安交通大学 | Image-spectrum-polarization-state integrated obtaining apparatus and method |
| CN105547477A (en) * | 2016-01-12 | 2016-05-04 | 广东工业大学 | Polarization interference imaging spectrum system and imaging method thereof |
| CN106802184A (en) * | 2017-02-22 | 2017-06-06 | 西安交通大学 | The fast compact noise immunity type optical field imaging full-polarization spectrum detection device of illuminated and method |
Non-Patent Citations (1)
| Title |
|---|
| Full Stokes spectralpolarimeter based on the polarization-difference interference imaging spectrometer;Naicheng Quan et.al;《Proc. SPIE》;20170228;第10256卷;第102560I-1页至第102560I-12页 * |
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