CN106525242B - A kind of device can be used for sun polarization Stokes vector real-time measurement - Google Patents
A kind of device can be used for sun polarization Stokes vector real-time measurement Download PDFInfo
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Abstract
The present invention provides a kind of device that can be used for sun polarization Stokes vector real-time measurement, including spectral filter, wave plate array polarize chip arrays and intensity collection camera.Solar magnetic field is driving force and the energy source of solar activity outburst, and sun polarization Stokes vector measurement is the unique channel of solar magnetic field detection.A kind of new device can be used for sun polarization Stokes vector real-time measurement of the invention, microwave chip arrays are made using micro-optics technical principle, micro- polarization chip arrays are processed on this basis, and closed with the photosensitive face paste of intensity collection camera, it is only necessary to which single exposure can obtain sun polarization Stokes vector information.Relative to conventional apparatus, apparatus of the present invention are compact-sized, strong real-time, without accurately debugging and artificially modulating, spectral response range is wide, at low cost and can mass production, the detecting error of the factors such as camera nonuniform response, aberration introducing is avoided simultaneously, and can conveniently spread over other application field.
Description
Technical field
The present invention relates to polarimetry field, in particular to one kind can be used for sun polarization Stokes vector real-time measurement
Device.
Background technique
Solar magnetic field is driving force and the energy source of solar activity outburst, and sun polarization Stokes vector measurement is
The unique channel of solar magnetic field detection.Traditional sun polarimetry is frequently with time division modulation (as shown in Figure 2) and divides amplitude same
When modulate (as shown in Figure 3) mode.Time division modulation includes rotating wave plate, modulates Phase Retardation of Wave Plate, modulates wave plate optical axis side
To etc..
Fig. 2 (a) show the mode of rotating wave plate, and wherein 2-1 is quarter wave plate, and 2-2 is electric angle turntable, and 2-3 is inclined
Shake piece, and 2-4 is intensity collection camera, and 2-5 is controller.Controller controls turntable rotation, and then modulates wave plate fast axis direction,
Intensity collection camera successively records light intensity value when wave plate is in different fast axis directions, by the light intensity value measured and wave plate fast axle side
It, can be with inverting sunlight Stokes vector to be measured to angle.
Fig. 2 (b) show the mode of modulation Phase Retardation of Wave Plate, and wherein 2-6 is electro-optic crystal, and 2-3 is polarizing film, 2-4
For intensity collection camera, 2-5 is controller.Under the action of external electrical field, the birefringence of electro-optic crystal can change,
Its phase-delay quantity changes with applied voltage, and its fast axis direction does not change.Controller passes through additional to electro-optic crystal
To be modulated to its phase delay, intensity collection camera successively records when electro-optic crystal out of phase postpones different voltages
Light intensity value can be with inverting sunlight Stokes vector to be measured by the light intensity value and retardation of wave plate measured.
Fig. 2 (c) show the mode of modulation wave plate optical axis direction, and wherein 2-7 is FLC crystal, and phase delay is 1/2 wave
Long, 2-8 is FLC crystal, and phase delay is 1/4 wavelength, and 2-3 is polarizing film, and 2-4 is intensity collection camera, and 2-5 is controller.
Under the action of external electrical field, FLC optical axis of crystal direction is rotated and its phase delay is constant.Controller passes through to FLC crystalline substance
In vitro plus different voltages switch its optical axis direction between specific two angles, and intensity collection camera successively records FLC crystal
Light intensity value when different optical axis directions, by the light intensity value and FLC optical axis of crystal deflection measured, can with inverting sunlight to be measured this
Lentor vector.
Fig. 3 show the mode of point amplitude while modulation, and wherein 3-1 is Amici prism, and 3-2 is quarter wave plate, and 3-3 is inclined
Shake piece, and 3-4 is intensity collection camera, and 3-5 is controller.Light beam is divided into 4 beams by Amici prism, is added in each optical path different
The wave plate and polarizing film of direction of rotation, controller control 4 intensity collection cameras and the light intensity value of each optical path are carried out while being acquired,
The modulation system of the light intensity value and wave plate and polarizing film that are acquired using 4 cameras, can be finally inversed by sunlight Stokes to be measured
Vector.
However it is affected by environment, within the intensity collection camera double exposure period, into the sunlight of polarimeter
There are the mode measurement accuracy of light intensity flashing, therefore time division modulation to be restricted.Also, there is mechanical vibration in the mode of rotating wave plate
It is dynamic, and modulating frequency is low, to reach higher system stability, diagonal turntable has higher requirements, at high cost；Modulate wave plate phase
The mode of position delay generally requires additional thermostatic equipment, system complex because electro-optic crystal phase-delay quantity is more sensitive to temperature.
The mode of wave plate optical axis direction is modulated because of FLC optical axis direction equally more sensitive, and processing difficulties, higher cost, to certain to temperature
A little systems are difficult to meet requirement；The mode that point amplitude is modulated simultaneously by optical path be divided into 4 beams, system complex, and each camera it
Between there are inhomogeneities, influence measurement accuracy.
In view of the above problems, a kind of novel dress that can be used for sun polarization Stokes vector real-time measurement of the invention
It sets, the microwave chip arrays made of micro-optics technical principle, and processes micro- polarization chip arrays on this basis, and adopt with light intensity
Collect the photosensitive face paste of camera to close, it is only necessary to which single exposure can obtain sun polarization Stokes vector information.It is filled relative to tradition
Set, apparatus of the present invention are compact-sized, strong real-time, and without accurate debugging and artificial modulation, spectral response range is wide, it is at low cost and
Can mass production, while avoiding the factors such as camera nonuniform response, can conveniently spread over other application field.The present invention is real
It is strong with property, it is innovative obvious.
Summary of the invention
The technical problem to be solved by the present invention is to：The real-time survey of full Stokes vector parameter is carried out to sun polarization state
Amount.
The present invention solve above-mentioned technical problem the technical solution adopted is that：One kind can be used for sun polarization Stokes vector
The device of real-time measurement, including spectral filter, wave plate array, polarization chip arrays and intensity collection camera,
Wherein, spectral filter is located at before wave plate array, and the light for entering wave plate array is limited to certain spectrum model
In enclosing；Wave plate array is processed into the wave plate combined of out of phase delay using same wave plate in adjacent 2 × 2 four units,
And so on, array is ultimately formed；Polarization chip arrays, which are utilized, is processed into different polarization side in adjacent 2 × 2 four units
To polarizing film combination, and so on, ultimately form array；Wave plate array is identical as polarization chip arrays each unit size, number
It is corresponding；Intensity collection camera is located on horizontal solar telescope system focal plane, and record passes through the light intensity value of array each unit respectively,
It fits together with wave plate array, polarization chip arrays, is made into integrating device；
The data handling procedure of the device is as described below：
Firstly, the Stokes vector for defining sunlight to be measured is S=[I Q U V]T；In adjacent 2 × 2 four units
There are four types of various combination modes for interior wave plate and polarizing film, are denoted as a, b, c, d respectively.Wave plate Muller matrix is respectively Mwa,Mwb,
Mwc,Mwd, polarizing film Muller matrix is Mpa,Mpb,Mpc,Mpd.Combining Muller matrix is respectively Ma,Mb,Mc,Md.Wherein：
Note a unit Muller matrix be：
After labeled as the wave plate of a and polarizer unit, emergent light Stokes vector is sunlight：
Then, sunlight enters intensity collection camera (4), and camera acquires corresponding light intensity value and is：
Ia=a11I+a12Q+a13U+a14V (13)
The Muller matrix of known polarization piece is：
Wherein, α is polarizing film polarizing angle.
The Muller matrix of wave plate is：
Wherein, δ is the phase delay that wave plate generates, and θ is wave plate fast axis direction and coordinate system X-direction angle.
Then：
Similarly, camera acquires 2 × 2 four corresponding light intensity values of unit respectively and is：Ia,Ib,Ic,Id, have：
Pass through this group of light intensity value Ia,Ib,Ic,IdThe Stokes vector of inverting sunlight to be measured,
Wherein：
The condition of formula (5) existence and unique solution is：Metzler matrix full rank, i.e.,：
Rank (M)=4 (20)
Make α, δ in a, b, c, tetra- units of d, θ takes different values, and Metzler matrix can be made to meet the condition of formula (10).
Wherein, spectral filter effect is limited in the spectrum of incident light in certain bandwidth range, can be used
Grating spectrograph, interference light filter, atomic light filter and birefringent filter are wanted as long as meeting system in polarimetry application
It asks.
Wherein, the present apparatus can complete polarization Stokes vector measurement for multiple wavelength and the spectrum of bandwidth, not office
It is limited to specific wavelength and bandwidth, but is limited to the spectral response of intensity collection camera.
Wherein, the effect of spectral filter is limited in the spectrum of incident light in certain bandwidth range, can be made
With grating spectrograph, interference light filter, atomic light filter and birefringent filter etc., it is as long as meeting in polarimetry application
System requires.
Wherein, wave plate array, can be using the methods of coining, etching system for generating different phase delay to light beam
Make.
Wherein, the etching of wave plate or depth of indentation are related with wavelength and phase-shift phase, are retouched as long as meeting right formula (14)
The full rank condition stated can accurately measure polarization Stokes vector parameter.
Wherein, polarization chip arrays are composed using the polarizer unit in different polarization direction, can be using in substrate
The mode for plating the wire grating of different orientations is produced, can also be using modes such as nano impression, etchings, as long as meeting this hair
The polarization characteristic of bright requirement.
Wherein, the present apparatus uses different Phase Retardation of Wave Plate and polarizing film polarization side in adjacent 2 × 2 four units
To combination, but a combination thereof mode is not limited, as long as its modulation matrix M is reversible after combination.
Wherein, intensity collection camera can acquire light distribution required for polarimetry, can for CCD, CMOS,
EMCCD, photomultiplier tube etc., as long as meeting intensity collection function.
Wherein, single wave plate array and polarizing film array element size can not only correspond to single photodetector list
Member can also correspond to any photodetector unit, as long as can acquire respectively to by the light of each array element.
Wherein, present apparatus medium wave chip arrays, polarization chip arrays and intensity collection camera fit together, and are integrating device,
It can be individual devices, be combined together, can also be added respectively on the two sides of same substrate by modes such as glued or pressings
Work, as long as meeting the polarimetry function of this patent description.
The principle of the invention lies in：
Stokes vector can completely represent the polarization information of light, and optical element can be with to the transmitting of Stokes vector
It is indicated with Muller matrix.It is assumed that the Stokes vector of sunlight to be measured is S=[I Q U V]T, it is known that polarizing film
Muller matrix is：
Wherein, θ is polarizing film polarizing angle.
The Muller matrix of wave plate is：
Wherein, δ is the phase delay that wave plate generates, and θ is wave plate fast axis direction and coordinate system X-direction angle.
Successively after wave plate and polarizing film, Stokes vector is sunlight to be measured：
At specific wave plate and polarizing film modulation condition a, it is assumed that its Muller matrix is：
Camera acquisition light intensity value be：
Ia=a11I+a12Q+a13U+a14V (19)
Equally, in b, c, camera acquisition light intensity is I under d stateb,Ic,Id, have：
Pass through this group of light intensity value Ia,Ib,Ic,IdThe Stokes vector of inverting sunlight to be measured
Wherein：
It selects wave plate array (2) and polarizes the combination of chip arrays (3) in adjacent 2 × 2 four units, make to modulate
Matrix M is reversible, i.e.,：
Rank (M)=4 (23)
The present invention has the following advantages compared with prior art：
(1) a kind of new device that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention, is realized
Real-time measurement is carried out to sun polarization state, does not need time division modulation, it is only necessary to which single exposure can calculate this full support of target
Gram this vector parameters avoid the influence of traditional timesharing measurement light intensity flashing, effectively improve detection accuracy and sensitivity.
(2) a kind of new device that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention, is not necessarily to
Beam splitter and relay optical system can be completed single intensity collection and realize sun light polarization Stokes vector real-time measurement,
Its structure is substantially reduced, and structural compactness greatly improves, system stability enhancing.
(3) a kind of new device that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention, is not necessarily to
Relay optical system and additional beam splitter, it is of less demanding to the dispersion of transmissive element, improve effective detecting light spectrum range.
Meanwhile system aberration and spectra overlap are substantially reduced, improve the accuracy and sensitivity of polarization Stokes vector detection.
(4) a kind of new device that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention, uses
Integrated Light micro-optical device realizes the function of conventional geometric optical device, easy to operate without accurate debugging and artificial modulation.
Its process understands that repeatability and sequencing degree are high, is conducive to the standardization and mass production of measurement device, substantially reduces
The cost of mass production.
(5) a kind of new device that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention, only
Needing to measure a width intensity distribution image can be completed polarization Stokes vector measurement, and strong real-time can be used for high-speed motion
The polarimetry of target.It is low to environmental requirement, effectively extend the application field and application of polarization Stokes vector sensitive detection parts
Range.
In short, by a kind of novel dress that can be used for sun polarization Stokes vector real-time measurement proposed by the present invention
It sets, breaks through traditional modulation, it is only necessary to which single exposure can obtain sun polarization Stokes vector information.Relative to tradition
Device, apparatus of the present invention are compact-sized, strong real-time, and without accurate debugging and artificial modulation, spectral response range is wide, at low cost
And can mass production, while avoiding the factors such as camera nonuniform response, can conveniently spread over other application field.The present invention
It is practical, it is innovative obvious.
Detailed description of the invention
Fig. 1 is a kind of device that can be used for the sun and polarize Stokes vector real-time measurement.Wherein, 1-1 is spectral filtering
Device, 1-2 are wave plate array, and 1-3 is polarization chip arrays, and 1-4 is intensity collection camera.
Fig. 2 is time division modulation polarimeter, wherein Fig. 2 (a) is the mode of rotating wave plate, and Fig. 2 (b) is modulating wave
The mode of piece phase delay, Fig. 2 (c) are the mode for modulating wave plate optical axis direction.Wherein, 2-1 is quarter wave plate, and 2-2 is electric angle
Turntable, 2-3 are polarizing film, and 2-4 is intensity collection camera, and 2-5 is controller, and 2-6 is electro-optic crystal, and 2-7,2-8 are FLC brilliant
Body.
Fig. 3 is to divide amplitude modulating polarization measuring device simultaneously.Wherein, 3-1 is Amici prism, and 3-2 is quarter wave plate, and 3-3 is
Polarizing film, 3-4 are intensity collection camera, and 3-5 is controller.
Fig. 4 is wave plate array processing method.
Fig. 5 is polarization chip arrays processing method.
Fig. 6 is the integrated of wave plate array, polarization chip arrays and intensity collection camera, wherein 6-1 is wave plate array, and 6-2 is
Chip arrays are polarized, 6-3 is CCD camera.
Fig. 7 is that the present apparatus acquires example images.
Fig. 8 be by the present apparatus acquire image inverting Stokes example distribution schematic diagram, wherein Fig. 8 (a) be incident light this
Lentor parameter I distribution schematic diagram, Fig. 8 (b) be incident light stokes parameter Q distribution schematic diagram, Fig. 8 (c) be incident light this
Lentor parameter U distribution schematic diagram, Fig. 8 (d) are incident light stokes parameter V distribution schematic diagram.
Specific embodiment
With reference to the accompanying drawing and specific example further illustrates the present invention.
Basic thought of the invention is to provide a kind of device that can be used for sun polarization Stokes vector real-time measurement,
By spectral filter 1-1, wave plate array 1-2, chip arrays 1-3 is polarized, intensity collection camera 1-4 is formed, as shown in Figure 1.
Wherein, spectral filter 1-1 is located at before wave plate array 1-2, keeps the standard into the certain bandwidth of light of wave plate single
Coloured light；Wave plate array 1-2 is processed into the wave plate group of out of phase delay using same wave plate in adjacent 2 × 2 four units
It closes, and so on, ultimately forms array；Polarization chip arrays 1-3, which is utilized, is processed into difference in adjacent 2 × 2 four units
The polarizing film of polarization direction combines, and and so on, ultimately forms array；Wave plate array 1-2 and polarization chip arrays 1-3 each unit ruler
Very little identical, number is corresponding；Intensity collection camera 1-4 is located on horizontal solar telescope system focal plane, and record passes through array respectively
The light intensity value of each unit fits together with wave plate array 1-2, polarization chip arrays 1-3, is made into integrating device.
The data handling procedure of the device is as described below：
Firstly, the Stokes vector for defining sunlight to be measured is S=[I Q U V]T；In adjacent 2 × 2 four units
There are four types of various combination modes for interior wave plate and polarizing film, are denoted as a, b, c, d respectively.Wave plate Muller matrix is respectively Mwa,Mwb,
Mwc,Mwd, polarizing film Muller matrix is Mpa,Mpb,Mpc,Mpd.Combining Muller matrix is respectively Ma,Mb,Mc,Md.Wherein：
Note a unit Muller matrix be：
After labeled as the wave plate of a and polarizer unit, Stokes vector is sunlight：
Then, sunlight enters intensity collection camera 1-4, and camera acquires corresponding light intensity value and is：
Ia=a11I+a12Q+a13U+a14V (26)
Similarly, camera acquires 2 × 2 four corresponding light intensity values of unit respectively and is：Ia,Ib,Ic,Id, have：
By changing Phase Retardation of Wave Plate, fast axis direction, polarizing film polarizing angle, only modulation matrix M need to be made reversible, i.e. its order
It is 4, this group of light intensity value I can be passed througha,Ib,Ic,IdThe Stokes vector of inverting sunlight to be measured.
Wherein：
The Muller matrix of known wave plate is：
Wherein, δ is the phase delay that wave plate generates, and θ is wave plate fast axis direction and coordinate system X-direction angle.
Known Phase Retardation of Wave Plate is：
Wherein no,neThe respectively refractive index of o light and e light in crystal, for certain material, specific wavelength, no,neIt is permanent
Fixed, phase delay of δ is the function of crystal thickness d, by changing crystal thickness d, can postpone δ with phase modulation.Wave plate array 1-2
Using calcite material, the optical axis of crystal is vertical with incident light, and fast axis direction is fixed as -45 °.Calcite material etch is added
Work is wave plate array, and processing method is as shown in fig. 4 a.Tetra- units of a, b, c, d select Phase Retardation of Wave Plate group to be combined into shown in table 1：
Table 1
As depicted in fig. 4b, the light for being 656.3 nanometers for wavelength, no=1.6544, ne=1.4846, by calcite plus
Work is quarter wave plate, to meet b, the phase delay of c unit.In a, d unit etches wave plate, and groove depth d=966.284 receives
Rice, to meet its phase delay.
The Muller matrix of known polarization piece is：
Wherein, θ is polarizing film polarizing angle.
As shown in Figure 5 b, polarization chip arrays 1-3 using the plating metal wiregrating in substrate by the way of, polarizing film polarization direction and
Wire grating orientation is orthogonal.As shown in Figure 5 b, a, b, c, d unit polarizing film polarization direction group are combined into shown in table 2：
Table 2
| Sequence | a | b | c | d |
| Polarizing angle θ | 0° | 0° | 45° | -45° |
Polarization Modulation matrix is at this time：
Camera 6-3 is located on horizontal solar telescope system focal plane, and the characteristics such as Pixel size and quantity meet the sun and look in the distance
Mirror observation requires.Wave plate array 6-1 and polarization chip arrays 6-2 fits together with camera 6-3 target surface, as shown in Figure 6.The sun is hoped
Remote mirror institute is acquired after spectroscopy equipment and wave plate array and polarization chip arrays with camera at image, with four of adjacent 2 × 2
Pixel record light intensity value：
Incident light Stokes vector is calculated using four light intensity values and Polarization Modulation matrix of acquisition：
S=M-1·I′ (33)
For more intuitive display present apparatus using effect, We conducted analog simulations.Assume that incident sunlight is in simulation
Partial poolarized light, stokes parameter is random value at each picture point.When sunlight to be measured by the present apparatus modulation acquisition after, obtain
Image is as shown in Figure 7.After complementary operation, show that each stokes parameter distribution of incident light is as shown in Figure 8.Wherein, Fig. 8
It (a) is incident light stokes parameter I distribution schematic diagram, Fig. 8 (b) is incident light stokes parameter Q distribution schematic diagram, Fig. 8
It (c) is incident light stokes parameter U distribution schematic diagram, Fig. 8 (d) is incident light stokes parameter V distribution schematic diagram.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The people of the technology is familiar in disclosed technical scope, it will be appreciated that the replacement or increase and decrease arrived should all be covered in this hair
Within bright scope, therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (10)
1. a kind of device that can be used for sun polarization Stokes vector real-time measurement, it is characterised in that：The device includes spectrum
Optical filter (1-1), wave plate array (1-2), polarization chip arrays (1-3) and intensity collection camera (1-4)；
Wherein, spectral filter (1-1) is located at before wave plate array (1-2), will be limited to one into the light of wave plate array (1-2)
In fixed spectral region；Wave plate array (1-2) is processed into out of phase in adjacent 2 × 2 four units using same wave plate
The wave plate combined of delay and so on ultimately forms array；Polarization chip arrays (1-3) utilizes four lists adjacent 2 × 2
It is processed into the polarizing film combination in different polarization direction in member, and so on, ultimately forms array；Wave plate array (1-2) and polarization
Chip arrays (1-3) each unit size is identical, and number is corresponding；It is flat that intensity collection camera (1-4) is located at horizontal solar telescope system coke
On face, record passes through the light intensity value of array each unit respectively, is fitted in one with wave plate array (1-2), polarization chip arrays (1-3)
It rises, is made into integrating device；
The data handling procedure of the device is as described below：
Firstly, the Stokes vector for defining sunlight to be measured is S=[I Q U V]T；The wave in adjacent 2 × 2 four units
There are four types of various combination modes for piece and polarizing film, are denoted as a, b, c, d respectively, wave plate Muller matrix is respectively Mwa,Mwb,Mwc,
Mwd, polarizing film Muller matrix is Mpa,Mpb,Mpc,Mpd, combination Muller matrix is respectively Ma,Mb,Mc,Md, wherein：
Note a unit Muller matrix be：
After labeled as the wave plate of a and polarizer unit, emergent light Stokes vector is sunlight：
Then, sunlight enters intensity collection camera (4), and camera acquires corresponding light intensity value and is：
Ia=a11I+a12Q+a13U+a14V (3)
The Muller matrix of known polarization piece is：
Wherein, α is polarizing film polarizing angle；
The Muller matrix of wave plate is：
Wherein, δ is the phase delay that wave plate generates, and θ is wave plate fast axis direction and coordinate system X-direction angle；Then：
Similarly, camera acquires 2 × 2 four corresponding light intensity values of unit respectively and is：Ia,Ib,Ic,Id, have：
Pass through this group of light intensity value Ia,Ib,Ic,IdThe Stokes vector of inverting sunlight to be measured,
Wherein：
The condition of formula (5) existence and unique solution is：Metzler matrix full rank, i.e.,：
Rank (M)=4 (10)
Make α, δ in a, b, c, tetra- units of d, θ takes different values, and Metzler matrix can be made to meet the condition of formula (10).
2. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Spectral filter effect is limited in the spectrum of incident light in certain bandwidth range, using grating spectrograph, is done
Optical filter, atomic light filter or birefringent filter are related to, as long as meeting system requirements in polarimetry application.
3. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：The device can complete polarization Stokes vector measurement for multiple wavelength and the spectrum of bandwidth, be not limited to specific
Wavelength and bandwidth, but it is limited to the spectral response of intensity collection camera.
4. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Wave plate array is made for generating different phase delay to light beam of coining/lithographic method.
5. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1 or 4, special
Sign is：The etching or depth of indentation of wave plate are related with wavelength and phase-shift phase, are retouched as long as meeting formula in claim 1 (7)
The full rank condition stated can accurately measure polarization Stokes vector parameter.
6. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Polarization chip arrays (1-3) is composed using the polarizer unit in different polarization direction, using plating different rows in substrate
The mode of the wire grating of column direction is produced, or uses nano impression or etching mode, as long as the polarization characteristic met the requirements
?.
7. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Using the combination of different Phase Retardation of Wave Plate and polarizing film polarization direction in adjacent 2 × 2 four units, but not
A combination thereof mode is limited, as long as its modulation matrix M is reversible after combination.
8. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Intensity collection camera can acquire light distribution required for polarimetry, be CCD, CMOS, EMCCD or photoelectricity times
Increase pipe, as long as meeting intensity collection function.
9. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：Single wave plate array and polarizing film array element size can not only correspond to single photodetector unit, also can
Corresponding any photodetector unit.
10. a kind of device that can be used for sun polarization Stokes vector real-time measurement according to claim 1, feature
It is：The device medium wave chip arrays (1-2), ((1-3) ((1-4's polarization chip arrays) fits together, and is with intensity collection camera
Integrating device is individual devices, is combined together by glued or pressing mode, or add respectively on the two sides of same substrate
Work.
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| CN107014490A (en) * | 2017-04-17 | 2017-08-04 | 大连理工大学 | One kind point focal plane type real-time polarization imaging system |
| CN108007575A (en) * | 2017-11-29 | 2018-05-08 | 中国科学院光电技术研究所 | A kind of full Stokes vector polarization imaging device of miniaturization based on binary digit coding birefringece crystal |
| CN109655160A (en) * | 2018-03-05 | 2019-04-19 | 曹毓 | A kind of extension target divides visual field polarization measurement system and method in real time |
| CN108490214B (en) * | 2018-03-14 | 2020-03-20 | 中国科学院光电技术研究所 | Solar atmosphere apparent velocity field measuring method based on tunable optical filter imaging observation |
| CN110631705B (en) * | 2019-09-17 | 2021-04-20 | 哈尔滨理工大学 | Method and device for carrying out real-time Stokes polarization measurement by using DMD |
| CN114166348B (en) * | 2021-12-16 | 2023-09-19 | 中国科学院光电技术研究所 | Rapid polarization imaging method based on full Stokes vector |
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