CN204831550U - Spectral imaging device that polarization state acquireed in step - Google Patents
Spectral imaging device that polarization state acquireed in step Download PDFInfo
- Publication number
- CN204831550U CN204831550U CN201520333611.8U CN201520333611U CN204831550U CN 204831550 U CN204831550 U CN 204831550U CN 201520333611 U CN201520333611 U CN 201520333611U CN 204831550 U CN204831550 U CN 204831550U
- Authority
- CN
- China
- Prior art keywords
- polarization
- degree
- imaging device
- sagnac interferometer
- lens array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model provides a spectral imaging device that polarization state acquireed in step has higher energy utilization and real -time, and does not have moving part in the device, has very good stability. This polarization spectral imaging device, mainly include the leading optical system who follows the light path and set gradually, the SAGNAC interferometer, 2X2 fu shi lens array, polarization diaphragm and detector subassembly, target light gets into the SAGNAC interferometer through leading optical system, producing thoroughly on the beam splitting face of SAGNAC interferometer, the inverse ratio respectively is two bundles of light of 50%, light beam from the outgoing of SAGNAC interferometer passes through 2X2 fu shi lens array again, behind the polarization diaphragm, produce interference fringe on the photosurface of detector subassembly, wherein, the polarization diaphragm is the region of four different polarization states corresponding to the configuration of 2X2 fu shi lens array.
Description
Technical field
The utility model relates to a kind of polarization spectrum imaging device.
Background technology
Light spectrum image-forming and polarization imaging combine and define a kind of new optical remote sensing technology---and polarization spectrum imaging technology, this technology can collect the image information of target, spectral information and polarization state information and be melted into a whole.May be there is the phenomenon of " same object different images " and " the different spectrum of jljl " in light spectrum image-forming kind equipment, may have some limitations in the precision identifying target; Add polarization information in image and spectral information after, optimal detection and recognition capability can be reached.Be particluarly suitable for the target detection under the conditions such as turbid media (cigarette, mist, haze, dirt, water body etc.), also due to " high light reduction " and " low light level strengthening " feature that polarization state possesses, can greatly extend remote sensing dark-detecting area at bright two ends., accurately can portray and law discovery atmospheric attenuation by polarization means meanwhile, can be new atmospheric window theory and objective basis is provided.
At present, polarization spectrum imaging detection method mainly contains following several mode:
1, based on the polarization spectrum imaging method of AOTF (acousto-optic tunable) and LCTF (liquid crystal tunable)
This principle utilizes acoustooptic diffraction principle and carries out the selection of spectrum with liquid crystal electric tuning principle, simultaneously, adopt the combinations such as phase delay device LCVR to carry out the measurement of polarization state, its shortcoming is the measurement that can only be used for static object, does not meet the demand of dynamic application target and real-time.
2, the polarization spectrum imaging method of calculating computed tomography type
Carried out the detection of polarization state and spectral information by the polaroid and wave plate installing multiple different polarization direction, shortcoming is that the time of measuring polarization state is long, has moving component, inapplicable under the fast-changing condition of polarization state.
3, based on the spectrum polarizing method of slit dispersion
The method adopts polarization-spectral intensity modulation technique, by adding the measurement that spectral modulation module realizes polarization state in common slit dispersive spectrometer light path, the shortcoming of the method is that system adopts slit, and capacity usage ratio is lower, and spectrum exists aliasing simultaneously.
4, based on the polarization spectrum imaging method of polarization grating
The program have employed the responsive grating of a kind of novel transmission-type anisotropic polarization, this grating can realize the separation of polarization peacekeeping spectrum dimension, but there is aliasing in this system in spectrum acquisition, the measurement of polarization state needs to be calculated by combination, simultaneously, there is slit in this system, capacity usage ratio is not high.
Utility model content
The optical spectrum imaging device that the utility model provides a kind of polarization state synchronously to obtain, has higher capacity usage ratio and real-time, and there is not moving component in device, have extraordinary stability.
The technical solution of the utility model is as follows:
A kind of polarization spectrum imaging device, mainly comprise the preposition optical system, SAGNAC interferometer, 2X2 fourier lens array, polarizing diaphragm and the detector assembly that set gradually along light path, target light enters SAGNAC interferometer through preposition optical system, the beam-splitting surface of SAGNAC interferometer produces the two-beam that inverse ratio is respectively 50%, from the light beam of SAGNAC interferometer outgoing again after 2X2 fourier lens array, polarizing diaphragm, the light-sensitive surface of detector assembly produces interference fringe; Wherein, polarizing diaphragm corresponds to the region that 2X2 fourier lens array is configured to four different polarization states.
The incident light of SAGNAC interferometer is non-interfering, emergent light is the light beam cut by wavelength Transverse Shear, after fourier lens array, each image planes become the picture (to being greater than 200 times of focal lengths) of four Same Scene targets, picture identical like this, through the polarizing diaphragm of four quadrants, just can obtain the target interferogram under four polarization states.
Based on above scheme, the utility model does following optimization further:
The region of above-mentioned four different polarization states is sphere of movements for the elephants type layout.Like this, detector target surface can be made full use of.
Configuration mode preferably following two kinds of patterns in four regions of above-mentioned polarizing diaphragm:
(1) 0 degree, 45 degree, 90 degree, 135 degree linear polarization obtain manners are configured to respectively.
(2) three regions are configured to any three kinds of 0 degree, 45 degree, 90 degree, 135 degree linear polarization obtain manner respectively, and another area configurations is circular polarization state obtain manner.
Above-mentioned polarization spectrum imaging device is adopted to realize the method for spectrum polarizing image detection, comprise following process: target light is after preposition optical system, enter SAGNAC interferometer, the beam-splitting surface of SAGNAC interferometer produces the two-beam that inverse ratio is respectively 50%, through 2X2 fourier lens array, after polarizing diaphragm, the light-sensitive surface of detector assembly produces interference fringe, namely this interference fringe has superposed the interference polarization figure of scene information, this interference polarization figure carries out after spectrum recovering through data handling system, draw the image of target four direction polarization state under different spectral coverage.
Compared with traditional approach, advantage of the present utility model is as follows:
1, this detection method compares traditional slit polarization spectrum imaging method, has very high capacity usage ratio.
When carrying out polarization state and obtaining, generally all can have very large energy loss, this is the factor that emphasis is considered concerning the spectrum imaging system with slit carries out polarization state detection, generally all needs indemnifying measure; But compensate and just mean that introducing timesharing detects.The utility model without the need to energy compensating, achieves the complementation without the high-energy utilization factor of slit of the energy loss of measuring polarization state and large aperture in actual spectrum detection.
2, traditional approach is timesharing, nonsynchronous measurement, and the acquisition of the utility model polarization state is synchronous acquisition, has extraordinary real-time.
3, traditional approach needs rotatory polarization to take turns or wave plate, and the utility model does not exist moving component, has extraordinary stability.
Accompanying drawing explanation
Fig. 1 is system chart of the present utility model.
Embodiment
Polarization spectrum imaging detection system of the present utility model forms primarily of preposition optical system 1, SAGNAC interferometer 2,2X2 fourier mirror (imaging lens) array 3, polarizing diaphragm 4, detector assembly 5, data handling system 6.Detection mode is as follows: target reflecting light is after preposition optical system 1, enter SAGNAC interferometer 2, interferometer beam-splitting surface produces the two-beam that inverse ratio is respectively 50%, through 2X2 fourier mirror (imaging lens) array 3, after polarizing diaphragm 4, detector light-sensitive surface produces interference fringe, this interference fringe is the interference polarization figure having superposed scene information, interferogram is after data handling system 6 carries out spectrum recovering, just obtain target under different spectral coverage, the image of four direction polarization state, this polarizing diaphragm 4 can be configured to 0 degree, 45 degree, 90 degree, 135 degree of polarization state obtain manners, also can be configured to wherein any 3 linear polarization and circular polarization state obtain manner.
Claims (4)
1. a polarization spectrum imaging device, it is characterized in that: comprise the preposition optical system, SAGNAC interferometer, 2X2 fourier lens array, polarizing diaphragm and the detector assembly that set gradually along light path, target light enters SAGNAC interferometer through preposition optical system, the beam-splitting surface of SAGNAC interferometer produces the two-beam that inverse ratio is respectively 50%, from the light beam of SAGNAC interferometer outgoing again after 2X2 fourier lens array, polarizing diaphragm, the light-sensitive surface of detector assembly produces interference fringe; Wherein, polarizing diaphragm corresponds to the region that 2X2 fourier lens array is configured to four different polarization states.
2. polarization spectrum imaging device according to claim 1, is characterized in that: the region of described four different polarization states is sphere of movements for the elephants type layout.
3. polarization spectrum imaging device according to claim 1, is characterized in that: four regions of polarizing diaphragm are configured to 0 degree, 45 degree, 90 degree, 135 degree linear polarization obtain manners respectively.
4. polarization spectrum imaging device according to claim 1, it is characterized in that: in four regions of polarizing diaphragm, have three regions to be configured to any three kinds of 0 degree, 45 degree, 90 degree, 135 degree linear polarization obtain manner respectively, another area configurations is circular polarization state obtain manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333611.8U CN204831550U (en) | 2015-05-21 | 2015-05-21 | Spectral imaging device that polarization state acquireed in step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333611.8U CN204831550U (en) | 2015-05-21 | 2015-05-21 | Spectral imaging device that polarization state acquireed in step |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204831550U true CN204831550U (en) | 2015-12-02 |
Family
ID=54689142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520333611.8U Withdrawn - After Issue CN204831550U (en) | 2015-05-21 | 2015-05-21 | Spectral imaging device that polarization state acquireed in step |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204831550U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157836A (en) * | 2015-05-21 | 2015-12-16 | 中国科学院西安光学精密机械研究所 | Spectral imaging device for polarization state synchronizing acquisition and method thereof |
| CN105387936A (en) * | 2015-12-24 | 2016-03-09 | 南京理工大学 | High-flux Sagnac interference imaging spectrum apparatus |
| CN106872038A (en) * | 2017-03-10 | 2017-06-20 | 中国科学院西安光学精密机械研究所 | A kind of relevant dispersion spectrum imaging device of high flux high stable |
| CN106918392A (en) * | 2017-03-10 | 2017-07-04 | 中国科学院西安光学精密机械研究所 | A kind of big optical path difference interference with common path light-dividing device of high stable and its application system |
| CN111707367A (en) * | 2020-05-08 | 2020-09-25 | 中国科学院西安光学精密机械研究所 | Polarization spectrum imaging device and method based on M-Z interference |
-
2015
- 2015-05-21 CN CN201520333611.8U patent/CN204831550U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157836A (en) * | 2015-05-21 | 2015-12-16 | 中国科学院西安光学精密机械研究所 | Spectral imaging device for polarization state synchronizing acquisition and method thereof |
| CN105157836B (en) * | 2015-05-21 | 2017-09-29 | 中国科学院西安光学精密机械研究所 | Optical spectrum imaging device and its method that a kind of polarization state is synchronously obtained |
| CN105387936A (en) * | 2015-12-24 | 2016-03-09 | 南京理工大学 | High-flux Sagnac interference imaging spectrum apparatus |
| CN106872038A (en) * | 2017-03-10 | 2017-06-20 | 中国科学院西安光学精密机械研究所 | A kind of relevant dispersion spectrum imaging device of high flux high stable |
| CN106918392A (en) * | 2017-03-10 | 2017-07-04 | 中国科学院西安光学精密机械研究所 | A kind of big optical path difference interference with common path light-dividing device of high stable and its application system |
| CN111707367A (en) * | 2020-05-08 | 2020-09-25 | 中国科学院西安光学精密机械研究所 | Polarization spectrum imaging device and method based on M-Z interference |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105157836B (en) | Optical spectrum imaging device and its method that a kind of polarization state is synchronously obtained | |
| CN204831550U (en) | Spectral imaging device that polarization state acquireed in step | |
| CN103822712B (en) | Imaging method and imaging spectrometer based on Wollaston prism light splitting | |
| CN103245285B (en) | A kind of reflection type point diffraction carrier synchronization movable phase interfere pick-up unit and detection method | |
| CN104833977A (en) | Instantaneous remote-sensing polarization imaging device based on microwave plate array and realizing method thereof | |
| CN102944310B (en) | Spectral resolution adjustable interference imaging spectrometer | |
| CN102564612B (en) | Component prism-based phase diversity wavefront sensor | |
| CN105423911A (en) | Common-path digital holographic microscopic device and method based on optical grating defocusing | |
| CN103674243B (en) | LONG WAVE INFRARED spatial modulation and interference miniaturization method | |
| CN102589701B (en) | Method for expanding application bandwidth of spatial heterodyne interferometer | |
| CN105547480A (en) | High-throughput birefringence interference imaging spectrum device | |
| CN102721470A (en) | Static spectrum polarization imaging device | |
| Shengyang et al. | Advances in application of space hyperspectral remote sensing | |
| CN104748855B (en) | Binary channels high flux interference imaging spectral device and method | |
| CN202614380U (en) | Static spectrum polarization imager | |
| CN106644076A (en) | Phase-shift interference spectrum imaging system and method | |
| CN107421641B (en) | A kind of broadband full polarization imaging device based on Mach Zehnder interferometer | |
| CN105043546A (en) | Novel AOTF spectral imaging system | |
| CN103322912B (en) | A kind of reflection type point diffraction is from axle simultaneous phase-shifting interference checking device and detection method | |
| CN104155000A (en) | Linearity gradual change optical filter type multispectral imaging instrument based on secondary imaging | |
| CN107101722A (en) | A kind of broadband linear polarization imaging method based on Mach Zehnder interferometer | |
| CN108931298B (en) | Compact high-flux high-stability interference imaging spectrometer | |
| CN207586561U (en) | A kind of phase recovery system calculated based on light intensity transmission measurement | |
| CN102878930A (en) | Phase object phase distribution quantitative measurement method and device as well as application of method and device | |
| CN207423363U (en) | A kind of minitype polarization light spectrum image-forming detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20170929 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20170929 |