CN106017677B - A kind of miniature Infrared Imaging Spectrometer and its imaging method - Google Patents
A kind of miniature Infrared Imaging Spectrometer and its imaging method Download PDFInfo
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- CN106017677B CN106017677B CN201610344274.1A CN201610344274A CN106017677B CN 106017677 B CN106017677 B CN 106017677B CN 201610344274 A CN201610344274 A CN 201610344274A CN 106017677 B CN106017677 B CN 106017677B
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- 238000003384 imaging method Methods 0.000 title claims abstract description 23
- 238000003331 infrared imaging Methods 0.000 title claims abstract description 14
- 230000003595 spectral effect Effects 0.000 claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 239000006185 dispersion Substances 0.000 claims abstract description 16
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 claims description 22
- 238000000701 chemical imaging Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 6
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 13
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 13
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Classifications
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- 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
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- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
The invention discloses a kind of miniature Infrared Imaging Spectrometer, including slit scan infrared spectrum imaging system and electric component；Described slit scan infrared spectrum imaging system includes preposition optical system, slit, spectral dispersion system, digital microlens array, Spectral Reconstruction system, and described electric component includes infrared detector, lenticule coding/decoding system, slit kinetic control system and image processing system；Also disclose the imaging method of spectrometer；The present invention realizes that target scene infrared energy is focused on using the preposition optical system of compact；Every linear field in scene is scanned using accurate slit scan technology so that be only imaged every time by an arrowband in scene；The light spectrum image-forming of linear field is realized using spectral dispersion system, digital microlens array, Spectral Reconstruction system, infrared detector, with high resolution, compact conformation, reliability is high, and lower-cost advantage has wide range of applications.
Description
Technical field
The invention belongs to infrared spectrum technical field of imaging, and in particular to a kind of miniature slit scan infrared imaging spectrum
Instrument, and its imaging method.
Background technology
Imaging spectrometer due to the characteristic of its " collection of illustrative plates ", be widely used in the detection of speciality chemical, imaging, with
And analysis.
Under normal circumstances, these special chemicals all have radiation/Absorption Characteristics in infra red radiation band, utilize imaging
These spectral signatures of spectrometer collection can realize the taxonomic history of chemical substance.
However, current imaging spectrometer has high cost, this largely constrains imaging spectrometer
Using.
The content of the invention
Have the shortcomings that cost is high, volume is big, stability is poor for traditional infrared imaging spectrometer, the purpose of the present invention it
One is to provide a kind of miniature Infrared Imaging Spectrometer.
The technical solution adopted for the present invention to solve the technical problems is：A kind of miniature Infrared Imaging Spectrometer, including it is narrow
Stitch scanned infrared spectrum imaging system and electric component；Described slit scan infrared spectrum imaging system is included along optical axis direction
The preposition optical system that is arranged on system front end and the slit being successively set on rear side of preposition optical system, spectral dispersion system,
Digital microlens array and Spectral Reconstruction system, described slit is arranged on the back focal plane of preposition optical system, the slit
Slot apertures direction be level；Described electric component include be arranged on Spectral Reconstruction system rear infrared detector and with it is infrared
Slit motion control is connected on the lenticule coding/decoding system of detector connection, described lenticule coding/decoding system
System processed and image processing system, described slit kinetic control system are connected with slit, described lenticule coding and decoding
System is connected with digital microlens array.
The second object of the present invention is to provide a kind of imaging method of miniature Infrared Imaging Spectrometer.
The technical solution adopted for the present invention to solve the technical problems is：A kind of imaging side of miniature Infrared Imaging Spectrometer
Method, comprises the following steps：a）, preposition optical system by the focus IR radiation of target scene in the plane where slit；b）、
Slit selectively passes through the linear field of varying level position；c）, spectral dispersion system is by the infra-red radiation optical dispersion of linear field
Come；d）, digital microlens array encodes to the spectral information through spectral dispersion system, and coding information is transferred to
Lenticule coding/decoding system；e）, Spectral Reconstruction system is reconstructed to the Spectral Radiation Information after coding, and focuses it onto
On the focal plane of infrared detector；f）, the infra-red radiation received is converted into electric signal and is transferred to micro- by infrared detector
On mirror coding/decoding system, lenticule coding/decoding system receives the coding information of digital microlens array transmission simultaneously；g）, it is narrow
Stitch kinetic control system and control the scanning motion of slit, and the kinematic parameter of slit is transferred to lenticule coding/decoding system；
h）, the information that is transmitted according to slit kinetic control system and digital microlens array of lenticule coding/decoding system is to red
The signal of external detector output is decoded, and decoded data are transferred into image processing system；i）, image image procossing
The data that system docking is received are ranked up synthesis, final output infrared spectroscopic imaging data.
The imaging method of described miniature Infrared Imaging Spectrometer, step g）Middle slit kinetic control system control slit exists
The particles on the direction of optical axis.
The beneficial effects of the invention are as follows：
（1）Employ accurate slit scan method, it is to avoid use traditional large scale scanning reflection mirror so that system has
There is higher stability；
（2）Employ digital microlens array coding techniques so that system has higher spectral resolution；
（3）Compact conformation of the present invention, cost is relatively low, goes for the application platform of various miniaturizations, has a wide range of application
It is general.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention.
Each reference is：1-preposition optical system, 2-slit, 3-spectral dispersion system, 4-digital lenticule battle array
Row, 5-Spectral Reconstruction system, 6-infrared detector, 7-slit kinetic control system, 8-lenticule coding/decoding system,
9-image processing system.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Shown in reference picture 1, the invention discloses a kind of miniature Infrared Imaging Spectrometer, including slit scan infrared spectrum into
As system and electric component.
Described slit scan infrared spectrum imaging system includes being arranged on the preposition optics of system front end along optical axis direction
System 1 and slit 2, spectral dispersion system 3, digital microlens array 4 and the spectrum for being successively set on the preposition rear side of optical system 1
Reconfiguration system 5, preposition optical system 1 is used for the focus IR radiation of scene in the plane where slit 2, and slit 2 is used for
The linear field of varying level position is selectively passed through, spectral dispersion system 3 is used to open the infra-red radiation optical dispersion of linear field
Come, digital microlens array 4 is used to encode the spectral information through spectral dispersion system 3, and coding information is transmitted
To lenticule coding/decoding system 8, the Spectral Radiation Information after 5 pairs of codings of Spectral Reconstruction system is reconstructed, and is focused on
Onto the focal plane of infrared detector 6, described slit 2 is arranged on the back focal plane of preposition optical system 1, the slit 2
Slot apertures direction is level.
Described electric component include be arranged on the rear of Spectral Reconstruction system 5 infrared detector 6 and with infrared detector 6
The lenticule coding/decoding system 8 of connection, Spectral Reconstruction system 5 focuses on the information of reconstruct the focal plane of infrared detector 6
On, the infra-red radiation received is converted into electric signal and is transferred on lenticule coding/decoding system 8 by infrared detector 6, micro-
Lens coding/decoding system 8 is used to receive the coding information that digital microlens array 4 is transmitted, described lenticule coding and decoding system
Slit kinetic control system 7 and image processing system 9, described slit kinetic control system 7 and slit are connected on system 8
2 are connected, for controlling the scanning motion of slit 2 and the kinematic parameter of slit 2 being transferred into lenticule coding/decoding system 8,
Described lenticule coding/decoding system 8 is connected with digital microlens array 4, and lenticule coding/decoding system 8 is transported according to slit
The signal that the information that autocontrol system 7 and digital microlens array 4 are transmitted is exported to infrared detector 6 is decoded,
And decoded data are transferred to image processing system 9, the data received are ranked up synthesis by image processing system 9,
Final output infrared spectroscopic imaging data.
On the basis of above-mentioned embodiment, infrared optical system I mounting means is as described below.
Preposition optical system 1 is arranged on forefront along systematic optical axis；Slit 2 is arranged on preposition optics along systematic optical axis
The position of the back focal plane of system 1, the direction of slit is along horizontal direction；Spectrum colour is installed successively along optical axis at the rear of slit 2
Dissipate system 3, digital microlens array 4, Spectral Reconstruction system 5 and infrared detector 6.
The operation principle of the present invention and the method for acquisition infrared spectroscopic imaging data are as described below.
The infra-red radiation of scene is focused on back focal plane through preposition optical system 1.
Vertical slits 2 and the aspect of optical axis carry out particles motion to the control of slit kinetic control system 7 slit at the same time,
Assuming that the scanning distance of slit 2 is-L-L, whenever motion d distance, infrared detector 6 gathers a data.
Assuming that slit 2 is moved at the x of position, now only have can be by infra-red radiation at x for the preposition back focal plane of optical system 1
Signal, the radiation signal is dispersed into numeral in target scene after spectral dispersion system 3 by the radiation signal of slit 2
On microlens array 4.
The digital microlens arrays 4 of 8 pairs of lenticule coding/decoding system are encoded so that digital microlens array 4 can be with
Through the radiation signal of specific region specific band, and then realize the wavefront of radiation signal is encoded, the radiation after coding
Signal is radiated after Spectral Reconstruction system 5 on the focal plane of infrared detector 6.
The radiation signal received is converted into electric signal by infrared detector 6, and is transmitted to lenticule coding and decoding
System 8, lenticule coding/decoding system 8 is decoded according to coding information to electric signal, may finally export preposition optical system
Unite the spectral digital image of a linear field at 1 back focal plane x, and transmit the signal to image processing system 9.
When slit 2 from-L moves to L, image processing system 9 can receive the spectrum of some linear fields of target scene
Image, image processing system 9 is integrated according to the geometric position of linear field to these spectrum pictures, may finally be obtained whole
The spectral image data cube of individual target scene.
The above-described embodiments merely illustrate the principles and effects of the present invention, and the embodiment that part is used, for
For one of ordinary skill in the art, without departing from the concept of the premise of the invention, can also make it is some deformation and
Improve, these belong to protection scope of the present invention.
Claims (3)
1. a kind of miniature Infrared Imaging Spectrometer, it is characterised in that：Including slit scan infrared spectrum imaging system and electric group
Part；Described slit scan infrared spectrum imaging system includes being arranged on slit scan infrared spectrum imaging system along optical axis direction
The preposition optical system of system front end（1）Be successively set on preposition optical system（1）The slit of rear side（2）, spectral dispersion system
（3）, digital microlens array（4）With Spectral Reconstruction system（5）, described slit（2）It is arranged on preposition optical system（1）After
On focal plane, the slit（2）Slot apertures direction be level；Described electric component includes being arranged on Spectral Reconstruction system（5）Afterwards
The infrared detector of side（6）With with infrared detector（6）The lenticule coding/decoding system of connection（8）, described lenticule compiles
Code solution code system（8）On be connected to slit kinetic control system（7）And image processing system（9）, described slit motion
Control system（7）With slit（2）It is connected, described lenticule coding/decoding system（8）With digital microlens array（4）Even
Connect.
2. a kind of imaging method of miniature Infrared Imaging Spectrometer as claimed in claim 1, it is characterised in that including following step
Suddenly：
a）, preposition optical system（1）By the focus IR radiation of target scene in slit（2）In the plane at place；
b）, slit（2）Selectively pass through the linear field of varying level position；
c）, spectral dispersion system（3）The infra-red radiation optical dispersion of linear field is come；
d）, digital microlens array（4）To passing through spectral dispersion system（3）Spectral information encoded, and by coding information
It is transferred to lenticule coding/decoding system（8）；
e）, Spectral Reconstruction system（5）Spectral Radiation Information after coding is reconstructed, and focuses it onto infrared detector
（6）Focal plane on；
f）, infrared detector（6）The infra-red radiation received is converted into electric signal and lenticule coding/decoding system is transferred to
（8）On, lenticule coding/decoding system（8）Digital microlens array is received simultaneously（4）The coding information of transmission；
g）, slit kinetic control system（7）Control slit（2）Scanning motion, and by slit（2）Kinematic parameter be transferred to it is micro-
Lens coding/decoding system（8）；
h）, lenticule coding/decoding system（8）According to slit kinetic control system（7）And digital microlens array（4）Transmission
The information come over is to infrared detector（6）The signal of output is decoded, and decoded data are transferred into image procossing system
System（9）；
i）, image image processing system（9）The data received are ranked up with synthesis, final output infrared spectroscopic imaging number
According to.
3. the imaging method of miniature Infrared Imaging Spectrometer according to claim 2, it is characterised in that the step g）In
Slit kinetic control system（7）Control slit（2）The particles on the direction perpendicular to optical axis.
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| CN106595863B (en) * | 2016-12-29 | 2018-05-15 | 中国科学院光电技术研究所 | A kind of method for improving liquid crystal tunable filter rebuilding spectrum precision and resolution ratio |
| CN107741273B (en) * | 2017-10-13 | 2023-05-05 | 中国科学院上海技术物理研究所 | Wide-width wide-spectrum long-wave infrared hyperspectral imaging system based on line detector |
| CN109525756B (en) * | 2018-11-02 | 2020-04-28 | 北京理工大学 | System for recovering black edge information imaged by foveola optical system |
| CN111623876B (en) * | 2020-07-01 | 2023-09-12 | 中国科学院上海技术物理研究所 | Push-broom hyperspectral imaging system and method based on S matrix slit array |
| CN112816068B (en) * | 2020-12-29 | 2023-12-26 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Infrared spectrum imaging system and spectrum image reconstruction method thereof |
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| CN103954359A (en) * | 2014-05-13 | 2014-07-30 | 哈尔滨工业大学（威海） | Zoom spectrograph with spectral measuring range and resolution ratio adjustable |
| CN104020154A (en) * | 2014-05-29 | 2014-09-03 | 成都中远千叶科技有限公司 | Broadband atom scan analysis instrument |
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| US20090303972A1 (en) * | 2008-06-06 | 2009-12-10 | Silver Spring Networks | Dynamic Scrambling Techniques for Reducing Killer Packets in a Wireless Network |
| JP2008278525A (en) * | 2008-06-12 | 2008-11-13 | Fujitsu Ltd | Spectrum spread communication system, and transmitter and receiver constituting the system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103954359A (en) * | 2014-05-13 | 2014-07-30 | 哈尔滨工业大学（威海） | Zoom spectrograph with spectral measuring range and resolution ratio adjustable |
| CN104020154A (en) * | 2014-05-29 | 2014-09-03 | 成都中远千叶科技有限公司 | Broadband atom scan analysis instrument |
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