CN101963528A - Method for realizing super-large vieing-field static polarization Fourier transform imaging spectrum - Google Patents
Method for realizing super-large vieing-field static polarization Fourier transform imaging spectrum Download PDFInfo
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- CN101963528A CN101963528A CN2010102914470A CN201010291447A CN101963528A CN 101963528 A CN101963528 A CN 101963528A CN 2010102914470 A CN2010102914470 A CN 2010102914470A CN 201010291447 A CN201010291447 A CN 201010291447A CN 101963528 A CN101963528 A CN 101963528A
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Abstract
The invention relates to a super-large viewing-field static polarization Fourier transform imaging method which comprises the following steps of: collecting, collimating and eliminating stray light for radiating light emitted by a target source through a front telescope system, and converting the radiating light into linearly polarized light through a polarizer; separating the linearly polarized light into two coherent and parallel partial light beams through a viewing-filed compensating polarization beam splitter; changing the vibration directions of the two partial light beams to be the same through an analyzer; and finally, converging the two light beams onto a detector for imaging and interference through an imaging mirror group to form an interference fringe modulated image containing spectrum information; and acquiring and processing received signals through a signal acquiring and processing system to acquire the image and the high spectral information of a target in a large vision angle.
Description
Technical field
The present invention relates to a kind of optical imaging method, the static polarization Fourier transform imaging spectrum of particularly a kind of ultra-large vision field implementation method.
Background technology
The carrier of information only, optical imaging method then are the spatial informations that obtains target by the shape image that imager obtains target, and spectrometer then obtains the spectral information of target, thereby obtains the structure and the chemical composition of material.1980s, US Air aerodynamic force laboratory (JPL) proposes the imaging spectrometer notion, has the dual-use function that obtains target picture and spectrogram simultaneously, is generally believed it is revolution leap on the contemporary optics imaging technique development history; Over afterwards surplus in the of 20 year, development has successively played the imaging spectrometer of multiple principles such as color dispersion-type, Fourier transform type (interfere type), optical filter type, calculating computed tomography type, and the most general with color dispersion-type and Fourier transform type, and its core is the imaging spectral implementation method.
Fourier transform type imaging spectral implementation method may further comprise the steps: the light that the first step, light source are sent becomes linearly polarized light through after the preposition optical system by the polarizer; In second step, be divided into the relevant and part light parallel to each other that two bundles have the fixed light path difference behind linearly polarized light process polarization beam apparatus and the analyzer; The 3rd step, coherent light by the imaging mirror after owing to interfere and have certain optical path difference, on receiver, form the image of interference fringe modulation, comprised incident light intensity and spectral information; The 4th step was carried out filtering and Fourier transform with the image that obtains, and obtained the two-dimensional space picture and the spectrum of target.In the above process, owing to be subjected to the beam splitter restriction in second step, interference fringe can produce flexural distortion when incident angle was big, so there is the shortcoming of field angle very little (generally having only the several years) based on the imaging spectrometer of imaging spectrum method in this.
Summary of the invention
Problem at existing Fourier transform type imaging spectral implementation method existence, the objective of the invention is to propose the static polarization Fourier transform imaging spectrum of a kind of ultra-large vision field implementation method, can in the ultra-large vision field scope, obtain the two-dimensional space image information and the one-dimensional interference optical spectrum information of target simultaneously.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
The static polarization Fourier transform imaging spectrum of ultra-large vision field implementation method, in second step that existing imaging spectral technology is realized, the polarized beam splitting device that replaces the conventional interference imaging spectrometer with polarized beam splitting device with field-compensation function, this field-compensation type polarized beam splitting device group is made up of at least two positive uniaxial negative crystals, make and disappear through the quadratic term of incident angle sine or the positive negative of part of high-order term correspondence in the optical path difference of two-beam behind this polarized beam splitting device, showing as positive and negative interference fringe distortion cancels each other, interferogram distortion when so just having eliminated big incident angle, the field-compensation of having realized imaging spectrometer enlarges, and makes field angle can enlarge 1 order of magnitude.
The static polarization Fourier transform imaging spectrum of ultra-large vision field implementation method, the imaging spectrometer of realizing this method comprises preposition telescopic system 1, the polarizer 2, field-compensation type polarization beam apparatus 3, analyzer 4, imaging mirror group 5, the detector 6 that coaxial order successively is provided with, and detector 6 is connected with signal and obtains and disposal system 7; Described preposition optical telescope 1 comprises that preposition optical system lens group 11, diaphragm 12 and the preposition optical system of the setting of coaxial order successively are as Fang Jing group 13; Described field-compensation type polarization beam apparatus 3 comprises two groups of first savart polariscope 31, second savart polariscopes 32 of having positive and negative interference fringe distortion respectively, wherein the first savart polariscope 31 is made up of the first savart plate 311, the second savart plate 312, and the second savart polariscope 32 is made up of the 3rd savart plate 321, the 4th savart plate 322; It is characterized in that: the radiant light that sends by target source through preposition telescopic system 1 collect, collimation, eliminate parasitic light after, become linearly polarized light by the polarizer 2, behind the linearly polarized light process field-compensation type polarization beam apparatus 3, become the relevant and part light parallel to each other of two bundles; Two bundle part light are by behind the analyzer 4, and direction of vibration becomes identical, after imaging mirror group 5 converges on the detector 6 imaging with two-beam and interferes, form the image of the interference fringe modulation that has comprised spectral information; The signal that receives again through signal obtain with disposal system 7 after can in big field angle, obtain the image and the high spectral information of target.
Described preposition optical system lens group 11 is reflector group, catadioptric mirror group or refracting set.
The described polarizer 2, analyzer 4 are polaroid, crystal or wiregrating.
Described imaging mirror group 5 is made of the anaberration lens combination, and its focal plane is positioned on the receiving plane of subsequent probe device 6.
Described detector 6 is ccd array, CMOS array, photodiode array, photomultiplier, infrared focal plane array or ultraviolet light detector array.
Described signal obtains with disposal system 7 and comprises that the information that detector 5 can be received carries out the microcomputer of Fourier transform processing, is used for object space information intensity information and spectral information are carried out demodulation, and is shown as picture.
Ultimate principle of the present invention is: introduce the savart polariscope composition polarization beam apparatus that polycomponent does not have positive and negative interference fringe distortion, make the distortion of positive striped with bear the striped distortion and cancel out each other, the restriction of polarized beam splitting device in the common polarization interference imaging spectrometer has been broken away from the visual field of inteference imaging spectrometer device like this, limited by preposition optical system, be achieved ultra-large vision field.Utilize the present invention to develop to have that the visual field is big, luminous flux is big, detection sensitivity is high, signal to noise ratio (S/N ratio) is high, wavelength accuracy is high, the inteference imaging spectrometer of the advantage of spectrographic detection wide ranges.
Description of drawings
Fig. 1 is an implementation procedure synoptic diagram of the present invention.
Fig. 2 is for realizing the structural representation of imaging spectrometer of the present invention.
Fig. 3 is for realizing the structural representation of a kind of pair of Savart plate field-compensation type imaging spectrometer of the present invention.
Fig. 4 is for realizing the structural representation of the field-compensation type polarization beam apparatus 3 among embodiment of the invention Fig. 3.
Fig. 5 is for realizing the structural representation of the imaging mirror group 5 among embodiment of the invention Fig. 3, and wherein: Fig. 5 (a) is the imaging mirror group 5 that is made of a cylindrical lens 51 and subsequent a lens combination 52; Fig. 5 (b) is the imaging mirror group 5 that is made of a lens combination 52.
Embodiment
Below in conjunction with accompanying drawing method principle of the present invention is elaborated.
With reference to Fig. 1, the present invention obtains by collection light, field-compensation type spectral interference, one-tenth interference image, demodulation and 4 steps realizations of processing ultra-large vision field imaging spectral information successively and shows.
With reference to Fig. 2, realize the imaging spectrometer of the inventive method, comprise preposition telescopic system 1, the polarizer 2, field-compensation type polarization beam apparatus 3, analyzer 4, imaging mirror group 5, detector 6 that coaxial order successively is provided with, detector 6 is connected with signal and obtains and disposal system 7.
Be embodiment with a kind of pair of polariscope group field-compensation type polarized beam splitting device ultra-large vision field imaging spectrometer below, 3-5 elaborates to method principle of the present invention in conjunction with the accompanying drawings.
With reference to Fig. 3, described preposition optical telescope 1 is positioned at whole device foremost, the preposition optical system lens group 11, diaphragm 12 and the preposition optical system that comprise the setting of coaxial order successively are used for gathering and the collimation target light, and eliminate parasitic light as Fang Jing group 13.Preposition optical system lens group 11 is reflector group, catadioptric mirror group or refracting set.
Be positioned at the back of preposition optical telescope 1, along the polarizer that is positioned at front end 2 of optical axis order setting, middle field-compensation type polarization beam apparatus group 3, the analyzer 4 of rear end, the static spectral module of interfering of common formation, be used for aforementioned transmission light is divided into two bundle coherent lights, realize spectrum beam split function, reach the high spectral resolution ability.Simultaneously two savart plate structures have increased light path, help improving spectrally resolved ability.
With reference to Fig. 4, described field-compensation type polarization beam apparatus 3 comprises two groups of first savart polariscope 31, second savart polariscopes 32 of having positive and negative interference fringe distortion respectively, wherein the first savart polariscope 31 is made up of the first savart plate 311, the second savart plate 312, the second savart polariscope 32 is made up of the 3rd savart plate 321, the 4th savart plate 322, be used to make positive striped distortion to cancel out each other, thereby increase field angle with bearing the striped distortion.
With reference to Fig. 5, described imaging mirror group 5 selects for use following arbitrary scheme to make:
Under the spatial modulation situation, be a cylindrical lens 51 and subsequent a lens combination 52, the focal plane of cylindrical lens 51 is positioned on the follow-up lens combination 52, and the focal plane of lens combination 52 is positioned on the receiving plane of subsequent probe device 6;
Under the space-time hybrid modulation situation, be a lens combination 52, the focal plane of lens combination 52 is positioned on the receiving plane of subsequent probe device 6.
Imaging mirror group 5 is used for the light of interferometer outgoing is focused on detector 6.
Described detector 6 is a photoelectric commutator, is ccd array, CMOS array, photodiode array, photomultiplier tube array, infrared focal plane array or ultraviolet light detector array.
Detector 6 is used to receive the emergent light of imaging mirror group 5, obtains image, the spectral information of target light; The electric signal of detector 6 outputs is sent into follow-up signal and is obtained and disposal system 7.
Described signal obtains with disposal system 7 and comprises that the information that detector 6 can be received carries out the microcomputer of Fourier transform processing, is used to demodulate two-dimensional space intensity, the one dimension spectrum of target, and is shown as the pseudo-colours picture.
Principle of work of the present invention is as follows: the static polarization Fourier transform imaging spectrum of ultra-large vision field implementation method, the radiant light that sends by target source through preposition telescopic system 1 collect, collimation, eliminate parasitic light after, become linearly polarized light by the polarizer 2, behind the linearly polarized light process field-compensation type polarization beam apparatus 3, become the relevant and part light parallel to each other of two bundles; Two bundle part light are by behind the analyzer 4, and direction of vibration becomes identical, after imaging mirror group 5 converges on the detector 6 imaging with two-beam and interferes, form the image of the interference fringe modulation that has comprised spectral information; The signal that receives again through signal obtain with disposal system 7 after can in big field angle, obtain image, the high spectral information of target.
Wherein the ultimate principle that realizes of ultra-large vision field is: introduces two savart polariscopes that have positive and negative interference fringe distortion respectively and form polarization beam apparatus, make positive striped distortion cancel out each other with bearing the striped distortion, thereby reach the purpose of increase field angle.
In the accompanying drawing: the preposition telescopic system of 1-; The 2-polarizer; 3-field-compensation type polarization beam apparatus; The 4-analyzer; 5-imaging lens group; The 6-detector; 7-signal acquisition and treatment system; The 31-first savart polariscope; The 32-second savart polariscope; The 311-first savart plate; The 312-second savart plate; 321-the 3rd savart plate; 322-the 4th savart plate; The 51-cylindrical lens; The 52-set of lenses.
Claims (7)
1. the static polarization Fourier transform imaging of ultra-large vision field is composed implementation method, in second step that existing imaging spectral technology is realized, the polarized beam splitting device that replaces the conventional interference imaging spectrometer with polarized beam splitting device with field-compensation function, this field-compensation type polarized beam splitting device group is made up of at least two positive uniaxial negative crystals, make and disappear through the quadratic term of incident angle sine or the positive negative of part of high-order term correspondence in the optical path difference of two-beam behind this polarized beam splitting device, showing as positive and negative interference fringe distortion cancels each other, interferogram distortion when so just having eliminated big incident angle, the field-compensation of having realized imaging spectrometer enlarges, and makes field angle can enlarge 1 order of magnitude.
2. the static polarization Fourier transform imaging of ultra-large vision field is composed implementation method, the imaging spectrometer of realizing this method comprises preposition telescopic system (1), the polarizer (2), field-compensation type polarization beam apparatus (3), analyzer (4), imaging mirror group (5), the detector (6) that coaxial order successively is provided with, and detector (6) is connected with signal and obtains and disposal system (7); Described preposition optical telescope (1) comprises that preposition optical system lens group (11), diaphragm (12) and the preposition optical system of the setting of coaxial order successively are as Fang Jing group (13); Described field-compensation type polarization beam apparatus (3) comprises two groups of first savart polariscope (31), second savart polariscopes (32) of having positive and negative interference fringe distortion respectively, wherein the first savart polariscope (31) is made up of the first savart plate (311), the second savart plate (312), and the second savart polariscope (32) is made up of the 3rd savart plate (321), the 4th savart plate (322); It is characterized in that: the radiant light that sends by target source through preposition telescopic system (1) collect, collimation, eliminate parasitic light after, become linearly polarized light by the polarizer (2), behind the linearly polarized light process field-compensation type polarization beam apparatus (3), become the relevant and part light parallel to each other of two bundles; Two bundle part light are by behind the analyzer (4), and direction of vibration becomes identical, after imaging mirror group (5) converges to detector (6) with two-beam goes up imaging and interfere, form the image of the interference fringe modulation that has comprised spectral information; The signal that receives again through signal obtain with disposal system (7) after can in big field angle, obtain the image and the high spectral information of target.
3. according to the said imaging spectral implementation method of claim 2, it is characterized in that: described preposition optical system lens group (11) is reflector group, catadioptric mirror group or refracting set.
4. according to the said imaging spectral implementation method of claim 2, it is characterized in that: the described polarizer (2), analyzer (4) are polaroid, crystal or wiregrating.
5. according to the said imaging spectral implementation method of claim 2, it is characterized in that: described imaging mirror group (5) is made of the anaberration lens combination, and its focal plane is positioned on the receiving plane of subsequent probe device (6).
6. according to the said imaging spectral implementation method of claim 2, it is characterized in that: described detector (6) is ccd array, CMOS array, photodiode array, photomultiplier, infrared focal plane array or ultraviolet light detector array.
7. according to the said imaging spectral implementation method of claim 2, it is characterized in that: described signal obtains with disposal system (7) and comprises that the information that detector (5) can be received carries out the microcomputer of Fourier transform processing, be used for object space information intensity information and spectral information are carried out demodulation, and be shown as picture.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048044A (en) * | 2011-10-11 | 2013-04-17 | 中国科学院化学研究所 | Weak signal detection system for sum frequency spectrum |
| CN110702230A (en) * | 2019-12-10 | 2020-01-17 | 南京南智先进光电集成技术研究院有限公司 | Fourier transform spectrometer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793559A (en) * | 2010-03-18 | 2010-08-04 | 西安交通大学 | Light and small interference imaging spectrum full-polarized detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793559A (en) * | 2010-03-18 | 2010-08-04 | 西安交通大学 | Light and small interference imaging spectrum full-polarized detection device |
Non-Patent Citations (7)
| Title |
|---|
| 《APPLIED OPTICS》 20041120 Chunmin Zhang et al. "Wide-field-of-view polarization interference imaging spectrometer" 6090-6094页 第43卷, 第33期 * |
| 《Optical Engineering》 20100430 Chunmin Zhang et al. "Design and analysis of wide-field-of-view polarization imaging spectrometer" 2-7 第49卷, 第4期 * |
| 《Optical Engineering》 20100430 Chunmin Zhang et al. "Design and analysis of wide-field-of-view polarization imaging spectrometer" 2-7 第49卷, 第4期 2 * |
| 《Optical Engineering》 20100430 Chunmin Zhang etc "Design and analysis of wide-field-of-view polarization imaging spectrometer" 第49卷, 第4期 2 * |
| 《Optics Communications》 20020301 Chunmin Zhang etc "A static polarization imaging spectrometer based on a Savart polariscope" , 2 * |
| CHUNMIN ZHANG ET AL.: ""Design and analysis of wide-field-of-view polarization imaging spectrometer"", 《OPTICAL ENGINEERING》 * |
| CHUNMIN ZHANG ET AL.: ""Wide-field-of-view polarization interference imaging spectrometer"", 《APPLIED OPTICS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048044A (en) * | 2011-10-11 | 2013-04-17 | 中国科学院化学研究所 | Weak signal detection system for sum frequency spectrum |
| CN110702230A (en) * | 2019-12-10 | 2020-01-17 | 南京南智先进光电集成技术研究院有限公司 | Fourier transform spectrometer |
| CN110702230B (en) * | 2019-12-10 | 2020-03-20 | 南京南智先进光电集成技术研究院有限公司 | Fourier transform spectrometer |
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Application publication date: 20110202 |