CN106352984A - Spectrum polarization image projection device and projection method thereof - Google Patents
Spectrum polarization image projection device and projection method thereof Download PDFInfo
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- CN106352984A CN106352984A CN201610808695.5A CN201610808695A CN106352984A CN 106352984 A CN106352984 A CN 106352984A CN 201610808695 A CN201610808695 A CN 201610808695A CN 106352984 A CN106352984 A CN 106352984A
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- 230000010287 polarization Effects 0.000 title claims abstract description 34
- 238000001228 spectrum Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 33
- 238000003384 imaging method Methods 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 31
- 229910052710 silicon Inorganic materials 0.000 claims description 31
- 239000010703 silicon Substances 0.000 claims description 31
- 230000011514 reflex Effects 0.000 claims description 16
- 230000003595 spectral effect Effects 0.000 claims description 14
- 238000002474 experimental method Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 6
- 239000000377 silicon dioxide Substances 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
Abstract
The invention discloses a spectrum polarization image projection device and a projection method thereof. The spectrum polarization image projection device comprises a spectrum engine, a space engine and a polarization engine. The spectrum engine comprises a light source, a first imaging objective lens, a diaphragm, a first collimation objective lens, an optical grating, a second imaging objective lens, a first digital micro-mirror device, a first reflector and a second reflector which are successively arranged along a light path. The space engine comprises a homogenizer, a second collimation objective lens, a third reflector, a second digital micro-mirror device, a fourth reflector and a third imaging objective lens which are successively arranged along the light path. The polarization engine comprises a polarizing film, a first beam splitter prism, a first silica-based liquid crystal spatial light modulator, a second beam splitter prism, a second silica-based liquid crystal spatial light modulator, a fourth imaging objective lens and a detector which are successively arranged along the light path. The obtained projection image has a continuous spectrum, and scene with a spectrum and polarization information in real life can be simulated; and devices such as the silica-based liquid crystal spatial light modulators and the beam splitter prisms are introduced, so that total Stokes polarization information images of a simulated target can be obtained.
Description
Technical field
The invention belongs to optical instrument field is and in particular to a kind of spectrum polarizing image projection device and its projecting method.
Background technology
High spectrum image projector is a kind of EO-1 hyperion target generation technique that new development in recent years is got up, the proposition of this technology
Provide a kind of economic, practical and effective solution route for hyperspectral imager detection, assessment and gamma correction.EO-1 hyperion
Image projector is used for simulating very by the high spectrum image that spatial light modulation technology constructs each pixel spectra random combine
Real field scape, realizes its work(by tested spectrogrph and reference spectrometer to the EO-1 hyperion detection data analysis of same analog image
Energy.
In recent years, both at home and abroad such technology is studied.Wherein, the height based on DMD, dispersing prism
Spectrum picture projection arrangement, the scene image of this device projection can simulate real target environment, removes external environment condition side by side
Interference, reduces the cost of outdoor scene calibration, but does not incorporate polarization information, to hyperspectral imager in the spectrum picture obtaining
Test evaluation capacity have much room for improvement.
Content of the invention
It is an object of the invention to provide a kind of spectrum polarizing image projection device and its projecting method, solve acquisition mesh
The spectral information of logo image and polarization information, carry out to spectrum imaging system verifying the technical problem of assessment.
The technical solution realizing the object of the invention is: a kind of spectrum polarizing image projection device, including setting gradually
Spectral engine, space engine and polarization engine, wherein spectral engine includes light source, the first imaging thing setting gradually along light path
Mirror, diaphragm, the first collimator objective, grating, the second image-forming objective lens, the first DMD, the first reflecting mirror and the second reflection
Mirror, even bundle device that space engine includes setting gradually along light path, the second collimator objective, the 3rd reflecting mirror, the second digital micromirror device
Part, the 4th reflecting mirror and the 3rd image-forming objective lens；Polaroid that polarization engine includes setting gradually along light path, the first Amici prism,
First liquid crystal on silicon spatial light modulator, the second Amici prism, the second liquid crystal on silicon spatial light modulator, the 4th image-forming objective lens and
Detector.
In described spectral engine, common optical axis sets gradually light source, the first image-forming objective lens, diaphragm, the first collimator objective and light
Grid, the second image-forming objective lens and the first DMD are successively set on the reflected light path of grating, and the first reflecting mirror is located at the
The reflected light path of one DMD, the second reflecting mirror is located at the reflected light path of the first reflecting mirror, and space engine is located at second
The reflected light path of reflecting mirror.
In the engine of described space, common optical axis sets gradually even bundle device, the second collimator objective and the 3rd reflecting mirror, even bundle device position
On the reflected light path of the second reflecting mirror, the second DMD is located on the reflected light path of the 3rd reflecting mirror, the 4th reflection
Mirror is located on the reflected light path of the second DMD, and the 3rd image-forming objective lens are located on the reflected light path of the 4th reflecting mirror, partially
The engine that shakes is located at the 3rd image-forming objective lens rear.
In described polarization engine, common optical axis sets gradually polaroid and the first Amici prism, and polaroid is located at the 3rd imaging
Object lens rear, the first liquid crystal on silicon spatial light modulator is located on the reflected light path of the first Amici prism, the second Amici prism position
On the transmitted light path of the first Amici prism, the second liquid crystal on silicon spatial light modulator is located at the reflected light path of the second Amici prism
On, the 4th image-forming objective lens and detector are successively set on the transmitted light path of the second Amici prism.
Based on the projecting method of spectrum polarizing image projection device, method and step is as follows:
Step 1, the incident beam from light source are imaged in its image planes by the first image-forming objective lens, are incident to collimation after diaphragm
Object lens, form collimated beam, incide dispersing prism with collimated beam form and dispersion occurs.
Light beam after step 2, dispersion incides the first DMD through the second image-forming objective lens, is transmitted by computer
One-dimensional spectral signal to the first DMD then controls the yawing moment of its micro mirror, and a part of micro mirror turns clockwiseAnd the required light beam of experiment is reflexed to the first reflecting mirror, reflex to the second reflecting mirror through the first reflecting mirror, and enter space
Engine, another some micromirrors rotate counterclockwiseReflection remainder light beam.
Light beam needed for step 3, above-mentioned experiment enters the even bundle device of space engine, and forms standard through the second collimator objective
Collimated optical beam.
Step 4, reflex to the second DMD through the 3rd reflecting mirror；Second numeral is sent to by computer micro-
The two dimensional image signal of mirror device controls the rotation of micro mirror and the light beam needed for reflecting experimental is to the 4th reflecting mirror, through the 4th reflection
Mirror reflexes to the 3rd image-forming objective lens, and enters polarization engine.
The required light beam of step 5, experiment passes through to polarize the polaroid of engine, forms polarized beam, through the first light splitting rib
Impinge perpendicularly on the first liquid crystal on silicon spatial light modulator after the reflection of mirror to be imaged and reflect, be transmitted to through the first Amici prism
Two Amici prisms, reflex to the second liquid crystal on silicon spatial light modulator through the second Amici prism, and the second liquid crystal on silicon spatial light is adjusted
Device processed is imaged and reflects to be transmitted through through the second Amici prism and is received by a detector image after the 4th image-forming objective lens.
Compared with prior art, its remarkable advantage is the present invention: (1) introduces liquid crystal on silicon spatial light modulator, light splitting
The devices such as prism, can obtain the polarization information of target.
(2) projected image obtaining has continuous spectrum, can be to carry the scene of spectrum and polarization information in simulating reality.
Brief description
Fig. 1 is the structural representation of the spectrum polarizing image projection device of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
In conjunction with Fig. 1, a kind of spectrum polarizing image projection device, including the spectral engine setting gradually, space engine and partially
Shake engine, light source 1 that wherein spectral engine includes setting gradually along light path, the first image-forming objective lens 2, diaphragm 3, the first collimator objective
4th, grating 5, the second image-forming objective lens 6, the first DMD 7, the first reflecting mirror 8 and the second reflecting mirror 9, space engine includes
The even bundle device 10 that sets gradually along light path, the second collimator objective 11, the 3rd reflecting mirror 12, the second DMD the 13, the 4th
Reflecting mirror 14 and the 3rd image-forming objective lens 15；Polaroid 16 that polarization engine includes setting gradually along light path, the first Amici prism 17,
First liquid crystal on silicon spatial light modulator 18, the second Amici prism 19, the second liquid crystal on silicon spatial light modulator the 20, the 4th imaging
Object lens 21 and detector 22.
In described spectral engine, common optical axis sets gradually light source 1, the first image-forming objective lens 2, diaphragm 3, the first collimator objective 4
With grating 5, the second image-forming objective lens 6 and the first DMD 7 be successively set on the reflected light path of grating 5, the first reflection
Mirror 8 is located at the reflected light path of the first DMD 7, and the second reflecting mirror 9 is located at the reflected light path of the first reflecting mirror 8, space
Engine is located at the reflected light path of the second reflecting mirror 9.
In the engine of described space, common optical axis sets gradually even bundle device 10, the second collimator objective 11 and the 3rd reflecting mirror 12, even
Bundle device 10 is located on the reflected light path of the second reflecting mirror 9, and the second DMD 13 is located at the reflected light of the 3rd reflecting mirror 12
Lu Shang, the 4th reflecting mirror 14 is located on the reflected light path of the second DMD 13, and it is anti-that the 3rd image-forming objective lens 15 are located at the 4th
Penetrate on the reflected light path of mirror 14, polarization engine is located at the 3rd image-forming objective lens 15 rear.
In described polarization engine, common optical axis sets gradually polaroid 16 and the first Amici prism 17, and polaroid 16 is located at the
Three image-forming objective lens 15 rear, the first liquid crystal on silicon spatial light modulator 18 is located on the reflected light path of the first Amici prism 17, the
Two Amici prisms 19 are located on the transmitted light path of the first Amici prism 17, and the second liquid crystal on silicon spatial light modulator 20 is located at second
On the reflected light path of Amici prism 19, the 4th image-forming objective lens 21 and detector 22 are successively set on the transmission of the second Amici prism 19
In light path.
Based on the projecting method of spectrum polarizing image projection device, method and step is as follows:
Step 1, the incident beam from light source 1 are imaged in its image planes by the first image-forming objective lens 2, are incident to after diaphragm 3
Collimator objective 4, forms collimated beam, incides dispersing prism 5 with collimated beam form and dispersion occurs.
Light beam after step 2, dispersion incides the first DMD 7 through the second image-forming objective lens 6, is passed by computer
The one-dimensional spectral signal delivering to the first DMD 7 then controls the yawing moment of its micro mirror, a part of micro mirror dextrorotation
TurnAnd the required light beam of experiment is reflexed to the first reflecting mirror 8, reflex to the second reflecting mirror 9 through the first reflecting mirror 8, go forward side by side
Enter space engine, another some micromirrors rotate counterclockwiseReflection remainder light beam.
Light beam needed for step 3, above-mentioned experiment enters the even bundle device 10 of space engine, and through the second collimator objective 11 shape
Become collimated beam.
Step 4, reflex to the second DMD 13 through the 3rd reflecting mirror 12；Second number is sent to by computer
The two dimensional image signal of word micro mirror element 13 controls the rotation of micro mirror and the light beam needed for reflecting experimental is to the 4th reflecting mirror 14, warp
4th reflecting mirror 14 reflexes to the 3rd image-forming objective lens 15, and enters polarization engine.
The required light beam of step 5, experiment passes through to polarize the polaroid 16 of engine, forms polarized beam, through the first light splitting
Impinge perpendicularly on the first liquid crystal on silicon spatial light modulator 18 after the reflection of prism 17 to be imaged and reflect, through the first Amici prism 17
It is transmitted to the second Amici prism 19, reflex to the second liquid crystal on silicon spatial light modulator 20, the second silicon through the second Amici prism 19
Base LCD space light modulator 20 is imaged and reflects and is transmitted through after the 4th image-forming objective lens 21 by detector through the second Amici prism 19
22 reception images.
Light beam sequentially passes through polaroid 16 and two liquid crystal on silicon spatial light modulators, when both liquid crystal on silicon spatial light
The phase-delay quantity of the slide of manipulator changes, and can obtain the light beam of six kinds of polarization states, and this six kinds of polarization states are respectively line
Polarization state (level), linear polarization (vertical) ,+Polarization state ,-Polarization state, right-hand circular polarization, Left-hand circular polarization.
Six kinds of polarization state light beam acquisition modes:
For the stokes vector of emergent light,For the stokes vector of incident illumination,For sytem matrix.
Incident beam sequentially passes through polaroid 16 and two liquid crystal on silicon spatial light modulators, the wherein printing opacity of polaroid 16
Axle with the angle of reference axis is, its Muller matrixFor:
The slide fast axle of the first liquid crystal on silicon spatial light modulator 18 and the angle of reference axis are, the phase-delay quantity of slide, its Muller matrixAs follows:
The slide fast axle of the second liquid crystal on silicon spatial light modulator 20 and reference axis angle are, the phase-delay quantity of slide, Muller matrixFor:
Slide phase-delay quantity is as follows: with output light stokes vector correlation
Present invention introduces the device such as liquid crystal on silicon spatial light modulator, Amici prism, the polarization information of target can be obtained, acquisition
Projected image has continuous spectrum, can be to carry the scene of spectrum and polarization information in simulating reality.
Claims (6)
1. a kind of spectrum polarizing image projection device it is characterised in that: the spectral engine that includes setting gradually, space engine and partially
Shake engine, light source (1) that wherein spectral engine includes setting gradually along light path, the first image-forming objective lens (2), diaphragm (3), first accurate
Straight object lens (4), grating (5), the second image-forming objective lens (6), the first DMD (7), the first reflecting mirror (8) and the second reflection
Mirror (9), even bundle device (10) that space engine includes setting gradually along light path, the second collimator objective (11), the 3rd reflecting mirror (12),
Second DMD (13), the 4th reflecting mirror (14) and the 3rd image-forming objective lens (15)；Polarization engine is included along light path successively
The polaroid (16) of setting, the first Amici prism (17), the first liquid crystal on silicon spatial light modulator (18), the second Amici prism
(19), the second liquid crystal on silicon spatial light modulator (20), the 4th image-forming objective lens (21) and detector (22).
2. spectrum polarizing image projection device according to claim 1 it is characterised in that: in described spectral engine, altogether light
Axle sets gradually light source (1), the first image-forming objective lens (2), diaphragm (3), the first collimator objective (4) and grating (5), the second imaging thing
Mirror (6) and the first DMD (7) are successively set on the reflected light path of grating (5), and the first reflecting mirror (8) is located at first
The reflected light path of DMD (7), the second reflecting mirror (9) is located at the reflected light path of the first reflecting mirror (8), space engine position
Reflected light path in the second reflecting mirror (9).
3. spectrum polarizing image projection device according to claim 2 it is characterised in that: in the engine of described space, altogether light
Axle sets gradually even bundle device (10), the second collimator objective (11) and the 3rd reflecting mirror (12), and even bundle device (10) is located at the second reflection
On the reflected light path of mirror (9), the second DMD (13) is located on the reflected light path of the 3rd reflecting mirror (12), the 4th reflection
Mirror (14) is located on the reflected light path of the second DMD (13), and the 3rd image-forming objective lens (15) are located at the 4th reflecting mirror (14)
Reflected light path on, polarization engine be located at the 3rd image-forming objective lens (15) rear.
4. spectrum polarizing image projection device according to claim 3 it is characterised in that: in described polarization engine, altogether light
Axle sets gradually polaroid (16) and the first Amici prism (17), and polaroid (16) is located at the 3rd image-forming objective lens (15) rear, the
One liquid crystal on silicon spatial light modulator (18) is located on the reflected light path of the first Amici prism (17), the second Amici prism (19) position
On the transmitted light path of the first Amici prism (17), the second liquid crystal on silicon spatial light modulator (20) is located at the second Amici prism
(19), on reflected light path, the 4th image-forming objective lens (21) and detector (22) are successively set on the transmission of the second Amici prism (19)
In light path.
5. spectrum polarizing image projection device according to claim 4 it is characterised in that: from the incident illumination of light source (1)
Bundle is imaged in its image planes by the first image-forming objective lens (2), is incident to collimator objective (4) after diaphragm (3), forms collimated light
Bundle, incides dispersing prism (5) with collimated beam form and dispersion occurs；Light beam after dispersion enters through the second image-forming objective lens (6)
It is mapped to the first DMD (7), then controlled by the one-dimensional spectral signal that computer is sent to the first DMD (7)
The yawing moment of its micro mirror, a part of micro mirror turns clockwise 12 ° and light beam required for experiment is reflexed to the first reflecting mirror
(8), reflex to the second reflecting mirror (9) through the first reflecting mirror (8), and enter space engine, 12 ° of another some micromirrors rotate counterclockwise
Reflection remainder light beam；
The required light beam of experiment enters the even bundle device (10) of space engine, and forms collimated light through the second collimator objective (11)
Bundle, reflexes to the second DMD (13) through the 3rd reflecting mirror (12)；Second digital micro-mirror is sent to by computer
The two dimensional image signal of device (13) controls the rotation of micro mirror and the light beam needed for reflecting experimental is to the 4th reflecting mirror (14), through the
Four reflecting mirrors (14) reflex to the 3rd image-forming objective lens (15), and enter polarization engine；
The required light beam of experiment passes through to polarize the polaroid (16) of engine, forms polarized beam, through the first Amici prism (17)
Reflection after impinge perpendicularly on the first liquid crystal on silicon spatial light modulator (18) and be imaged and reflect, through the first Amici prism (17) thoroughly
It is mapped to the second Amici prism (19), reflex to the second liquid crystal on silicon spatial light modulator (20) through the second Amici prism (19), the
Two liquid crystal on silicon spatial light modulators (20) are imaged and reflect and are transmitted through the 4th image-forming objective lens (21) through the second Amici prism (19)
Afterwards image is received by detector (22).
6. the projecting method based on the spectrum polarizing image projection device described in claim 1 it is characterised in that method and step such as
Under:
Step 1, the incident beam from light source (1) are imaged in its image planes by the first image-forming objective lens (2), after diaphragm (3)
It is incident to collimator objective (4), forms collimated beam, dispersing prism (5) is incided with collimated beam form dispersion occurs；
Light beam after step 2, dispersion incides the first DMD (7) through the second image-forming objective lens (6), is passed by computer
The one-dimensional spectral signal delivering to the first DMD (7) then controls the yawing moment of its micro mirror, and a part of micro mirror is clockwise
The required light beam of experiment is simultaneously reflexed to the first reflecting mirror (8) by 12 ° of rotation, reflexes to the second reflecting mirror through the first reflecting mirror (8)
(9), and enter space engine, another 12 ° of reflection remainder light beams of some micromirrors rotate counterclockwise；
Light beam needed for step 3, above-mentioned experiment enters the even bundle device (10) of space engine, and through the second collimator objective (11) shape
Become collimated beam；
Step 4, reflex to the second DMD (13) through the 3rd reflecting mirror (12)；Second number is sent to by computer
The two dimensional image signal of word micro mirror element (13) controls the rotation of micro mirror and the light beam needed for reflecting experimental is to the 4th reflecting mirror
(14), reflex to the 3rd image-forming objective lens (15) through the 4th reflecting mirror (14), and enter polarization engine；
The required light beam of step 5, experiment passes through to polarize the polaroid (16) of engine, forms polarized beam, through the first light splitting rib
Impinge perpendicularly on the first liquid crystal on silicon spatial light modulator (18) after the reflection of mirror (17) to be imaged and reflect, through the first Amici prism
(17) it is transmitted to the second Amici prism (19), reflex to the second liquid crystal on silicon spatial light modulator through the second Amici prism (19)
(20), the second liquid crystal on silicon spatial light modulator (20) is imaged and reflects and is transmitted through the 4th imaging thing through the second Amici prism (19)
After mirror (21), image is received by detector (22).
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| CN201610808695.5A CN106352984B (en) | 2016-09-07 | 2016-09-07 | Spectrum polarizing image projection device and its projecting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109188395A (en) * | 2018-07-19 | 2019-01-11 | 合肥工业大学 | A kind of full polarized fringe pipe laser imaging radar device |
| CN109669270A (en) * | 2018-12-29 | 2019-04-23 | 贝耐特光学科技（昆山）有限公司 | A kind of optical electivity device and optical device |
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| US20090096990A1 (en) * | 2007-10-11 | 2009-04-16 | Hon Hai Precision Industry Co., Ltd. | Stereo projection optical system |
| JP2011090069A (en) * | 2009-10-21 | 2011-05-06 | Sharp Corp | Projector |
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| US20070199645A1 (en) * | 2006-02-27 | 2007-08-30 | Seiko Epson Corporation | Method for manufacturing optical element, method for manufacturing projector, optical element and projector |
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| CN109669270A (en) * | 2018-12-29 | 2019-04-23 | 贝耐特光学科技（昆山）有限公司 | A kind of optical electivity device and optical device |
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| CN106352984B (en) | 2018-01-23 |
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