CN106768328A - A kind of spectrometer imaging system - Google Patents
A kind of spectrometer imaging system Download PDFInfo
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- CN106768328A CN106768328A CN201611129530.1A CN201611129530A CN106768328A CN 106768328 A CN106768328 A CN 106768328A CN 201611129530 A CN201611129530 A CN 201611129530A CN 106768328 A CN106768328 A CN 106768328A
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- 230000011218 segmentation Effects 0.000 claims abstract description 10
- 238000001228 spectrum Methods 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000004904 shortening Methods 0.000 abstract description 3
- 238000000701 chemical imaging Methods 0.000 description 4
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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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Abstract
This application discloses a kind of spectrometer imaging system, including：For target object to be imaged in into microlens array, the front end imaging device of target object image is formed；For the target object image to be carried out into visual field segmentation, the microlens array of the unit picture of multiple difference visual fields is formed, the microlens array is arranged at the focal plane of the front end imaging device；Rear end imaging device for the unit picture of the multiple different visual fields to be converged at detector；Unit picture for the multiple different visual fields after by convergence carries out data processing and obtains three-dimensional spectral information, or the target object image is carried out into the detector that data processing obtains three-dimensional spatial information.Multiple-Scan in compared with the prior art can just obtain the slit spectrometer of three-dimensional spectral information, microlens array replaces slit or the aperture of traditional imaging spectrometer, it is disposable to obtain three-dimensional spectral information, the spectral information for shortening target object obtains the time, bloom efficiency is improve, the loss of light is reduced.
Description
Technical field
The present invention relates to spectrometer technical field, more specifically to a kind of spectrometer imaging system.
Background technology
Imaging spectrometer is the important carrier of imaging spectral technology, using light and the repercussion study molecular structure of material
And dynamic characteristic, can obtain chemical information and the shadow related with sample to scattered information by obtaining the transmitting of light, absorption
As information, the spatial signature information of goal in research.Can simultaneously obtain the two-dimensional image information of target and the spectrum letter of target
Breath, the characteristics of with collection of illustrative plates, so as to realize the timing to target, positioning, qualitative and quantitative analysis.
Existing imaging spectrometer is slit-type or aperture type spectrometer, but slit-type or aperture type spectrometer needed to mesh
Being marked in each dimension carries out multiexposure, multiple exposure and Multiple-Scan and could obtain the complete three-dimensional stereo data of target, i.e., once expose
Light or scanning can only obtain a certain plane or two-dimensional image information causes observation time to extend, and causes the spatial information of target
It is not that observation is obtained simultaneously with spectral information, and because surrounding environment can be changed over time, observation time is more long, obtains
Information is more inaccurate.
Therefore, the three-dimensional spectral information acquisition time for how shortening target object is that those skilled in the art are badly in need of solving
Technical problem.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of spectrometer imaging system, the three of target object can be shortened
Dimension spectral information obtains the time.
To achieve the above object, the present invention provides following technical scheme：
A kind of spectrometer imaging system, including：
For target object to be imaged in into microlens array, the front end imaging device of target object image is formed；
For the target object image to be carried out into visual field segmentation, the lenticule battle array of the unit picture of multiple difference visual fields is formed
Row, the microlens array is arranged at the focal plane of the front end imaging device；
Rear end imaging device for the unit picture of the multiple different visual fields to be converged at detector；
Unit picture for the multiple different visual fields after by convergence carries out data processing and obtains three-dimensional spectral information, or
The target object image is carried out the detector that data processing obtains three-dimensional spatial information by person.
Preferably, in above-mentioned spectrometer imaging system, the front end imaging device is for obtaining remote target
The telescopic system of subject image.
Preferably, in above-mentioned spectrometer imaging system, also include：
It is arranged between the front end imaging device and the microlens array, for the target object image to be coupled
To the relay of the microlens array.
Preferably, in above-mentioned spectrometer imaging system, the rear end imaging device includes：
Collimating element for the unit picture of the multiple different visual fields to be converted to directional light.
Preferably, in above-mentioned spectrometer imaging system, the rear end imaging device also includes：
It is arranged between the collimating element and the detector, the light splitting unit for carrying out dispersion to the directional light
Part.
Preferably, in above-mentioned spectrometer imaging system, the beam splitter is prism-grating-prism type dispersion element,
The grating is volume holographic grating.
Preferably, in above-mentioned spectrometer imaging system, the microlens array pattern is 10 × 10, and the anglec of rotation is
26.565°。
Preferably, in above-mentioned spectrometer imaging system, system spectrum scope is 400nm-900nm, and system spectrum is differentiated
Rate R=650, visual field size is 1.2 ° × 1.2 °.
From above-mentioned technical proposal as can be seen that a kind of spectrometer imaging system provided by the present invention, including：For by mesh
Mark image objects form the front end imaging device of target object image in microlens array；For by the target object image
Carry out visual field segmentation, form the microlens array of the unit picture of multiple difference visual fields, the microlens array be arranged at it is described before
Hold at the focal plane of imaging device；Rear end imaging device for the unit picture of the multiple different visual fields to be converged at detector；
Unit picture for the multiple different visual fields after by convergence carries out data processing and obtains three-dimensional spectral information, or will be described
Target object image carries out the detector that data processing obtains three-dimensional spatial information.
The present invention provide a kind of spectrometer imaging system by observed object object on the focal plane of front end imaging device into
Picture, using microlens array as integral field unit, continuously cuts into difference and regards by microlens array by target object image
After some unit pictures of field, obtained by detector again through rear end imaging device, obtain the three-dimensional spectrum in two-dimensional field of view
Information.Multiple-Scan in compared with the prior art can be just obtained for the slit spectrometer of three-dimensional spectral information, microlens array
Slit or aperture instead of traditional imaging spectrometer, it is disposable to obtain three-dimensional spectral information, not only shorten the light of target object
Spectrum information obtains the time, improves bloom efficiency, reduces the loss of light.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of spectrometer imaging system schematic diagram of light spectrum image-forming pattern provided in an embodiment of the present invention；
Fig. 2 is a kind of spectrometer imaging system schematic diagram of non-spectral imaging pattern provided in an embodiment of the present invention；
Fig. 3 is prism-grating-prism type dispersion element structural representation provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 and 2 is referred to, Fig. 1 is a kind of spectrometer imaging system schematic diagram provided in an embodiment of the present invention；Fig. 2 is this
A kind of spectrometer imaging system schematic diagram that inventive embodiments are provided.
In a kind of specific embodiment, there is provided a kind of spectrometer imaging system, including：
For target object to be imaged in into microlens array 3, the front end imaging device 1 of target object image is formed；
For the target object image to be carried out into visual field segmentation, the lenticule battle array of the unit picture of multiple difference visual fields is formed
Row 3, the microlens array 3 is arranged at the focal plane of the front end imaging device 1；
Rear end imaging device 6 for the unit picture of the multiple different visual fields to be converged at detector 7；
Unit picture for the multiple different visual fields after by convergence carries out data processing and obtains three-dimensional spectral information, or
The target object image is carried out the detector 7 that data processing obtains three-dimensional spatial information by person.
A kind of spectrometer imaging system that the present invention is provided, using microlens array 3 as integral field unit, before being arranged at
At the focal plane of end device, imaging of the microlens array by observed object object on fore device focal plane is split, i.e. light warp
Can behind form micropore diameter after crossing microlens array 3, the micropore diameter as rear end imaging device 6 input aperture, will be preceding
The imaging at the focal plane of imaging device 1 is held to be divided into some unit pictures of different visual fields, again through the color of rear end imaging device 6
It is corresponding spectrum to dissipate, and the three-dimensional spectral information in two-dimensional field of view is acquired by detector 7.
Multiple-Scan in compared with the prior art can be just obtained for the slit spectrometer of three-dimensional spectral information, disposably obtained
Three-dimensional spectral information is obtained, the spectral information for not only shortening target object obtains the time, improves bloom efficiency, reduces the damage of light
Lose.
On the basis of above-mentioned spectrometer imaging system, the front end imaging device 1 is for obtaining remote target
The telescopic system of subject image.
Wherein, when directly observation analysis are carried out to target object, application front end imaging device 1 to target object directly into
As on microlens array 3.Telescopic system is usually imaging lens common in the art, for example, optical telescope etc. into
As camera lens.
Further, also include：It is arranged between the front end imaging device 1 and the microlens array 3, for by institute
State relay 2 of the target object image coupled to the microlens array 3.
Wherein, when the type of telescopic system is different, such as telescopic system can be Kepler telescope, Galilean telescope
, it is necessary in telescopic system and microlens array 3 when can not be direct imaging at microlens array 3 Deng, different types of telescope
Between relay 2 is set, can be coupled on microlens array 3, improve by the imaging of different types of telescopic system
The compatibility united to front end imaging device 1.
Relay 2 is usually single lens or lens combination, is designed according to the actual requirements, in protection model
In enclosing.
The spectrometer imaging system that the present invention is provided, can simultaneously obtain three-dimensional spectral information and spatial information, respectively
Realized by light spectrum image-forming pattern and non-spectral imaging pattern.When microlens array 3 is provided with, the system is light spectrum image-forming
Pattern；When microlens array 3 is removed, the system is non-spectral imaging pattern, below with two kinds of specific embodiments to we
Case is illustrated.
Embodiment one：
Fig. 1 is referred to, Fig. 1 is that a kind of spectrometer imaging system of light spectrum image-forming pattern provided in an embodiment of the present invention is illustrated
Figure.
A kind of spectrometer imaging system is present embodiments provided, including：
For target object to be imaged in into microlens array 3, the front end imaging device 1 of target object image is formed；
For the target object image to be carried out into visual field segmentation, the lenticule battle array of the unit picture of multiple difference visual fields is formed
Row 3, the microlens array 3 is arranged at the focal plane of the front end imaging device 1；
Rear end imaging device 6 for the unit picture of the multiple different visual fields to be converged at detector 7；
Unit for the multiple different visual fields after by convergence obtains three-dimensional spectral information as carrying out data processing
The detector 7；
It is arranged between the microlens array 3 and the rear end imaging device 6, for by the multiple different visual fields
Unit picture is converted to the collimating element 4 of directional light；
It is arranged between the collimating element 4 and the detector 7, the light splitting unit for carrying out dispersion to the directional light
Part 5.
When front end imaging device 1 is the telescopic system for obtaining remote target object image, can be directly right
Target object carries out observation analysis, and the light from target object is imaged on microlens array 3 through front end imaging device 1, micro-
The picture is carried out visual field segmentation by lens array 3, and the unit of the different visual fields after segmentation is collimated as collimated element 4, then by light splitting
Element 5 carries out light splitting, is finally imaged on detector 7 by rear end imaging device 6, the picture on detector 7 through follow-up algorithm at
Reason, finally obtains the three-dimensional spectral information of target.When being docked with different types of front end imaging device 1, using relaying
Device 2 makes the picture from different front end imaging devices 1 be coupled with microlens array 3, and the picture after coupling is through 3 points of microlens array
Cut, the collimated system collimation of picture of the different visual fields after segmentation, then light splitting is carried out through beam splitter 5, be finally imaged by rear end and filled
Put 6 to be imaged on detector 7, the picture on detector 7 finally obtains the three-dimensional spectral information of target through follow-up algorithm process.
As shown in figure 3, Fig. 3 is prism provided in an embodiment of the present invention-grating 8- prism-type dispersion element structural representations.
Preferably, the beam splitter 5 is prism-grating 8- prism-type dispersion elements, and the grating 8 is volume holographic grating 8.
Beam splitter 5 using volume holographic grating 8 and prism arrangement dispersion element (prism-grating-prism,
PGP), can not only optimize physical dimension, improve dispersion efficiency, and the structure that imaging pattern coexists with spectral patterns can be realized
Design.When dispersion element PGP works, the system be imaging spectrometer, using PGP as dispersion element another outstanding advantage
It is that volume holographic grating 8 has high diffraction efficiency, its peak efficiencies can reach more than 95%, this is for segmentation view field imaging
Spectrometer detection sensitivity is significant.
Embodiment two：
Referring to accompanying drawing 2, Fig. 2 is that a kind of spectrometer imaging system of non-spectral imaging pattern provided in an embodiment of the present invention is shown
It is intended to.
A kind of spectrometer imaging system is present embodiments provided, including：
For target object to be imaged in into microlens array 3, the front end imaging device 1 of target object image is formed；
Rear end imaging device 6 for the target object image to be converged at detector 7；
For the target object image to be carried out into the detector 7 that data processing obtains three-dimensional spatial information；
It is arranged between the microlens array 3 and the rear end imaging device 6, for the target object image to be turned
It is changed to the collimating element 4 of parallel units picture.
When front end imaging device 1 is the telescopic system for obtaining remote target object image, can be directly right
Target object carries out observation analysis, and the light from target object is by front end imaging device 1, collimating element 4, rear end imaging device
6 are imaged on detector 7, and the picture on detector 7 finally obtains the spatial information of target through follow-up image procossing.When with not
When the front end imaging device 1 of same type is docked, make from different types of front end imaging device 1 using relay 2
As being imaged on detector 7 with collimating element 4, rear end imaging device 6, the picture on detector 7 through follow-up image procossing, finally
Obtain the spatial information of target.
On the basis of above-mentioned spectrometer imaging system, the pattern of the microlens array 3 is 10 × 10, and the anglec of rotation is
26.565°。
Wherein, microlens array 3 is array that micron-sized lens are constituted by clear aperature and relief depth, and it is not only
The basic functions such as focusing, imaging with conventional lenses, and with unit size it is small, integrated level is high the characteristics of so that its energy
The function that traditional optical elements cannot be completed enough is completed, and many new optical systems can be constituted.Light is by microlens array 3
After can behind form micropore diameter, the micropore diameter will be imaged on telescope burnt as the input aperture of the spectrometer system of rear end
Face source at face is divided into some unit pictures, and these unit pictures are corresponding spectrum by spectrometer dispersion.Microlens array 3 is small
The array arrangement of lens, laterally there is 10 lenslets, longitudinally there is 10 lenslets, certainly, including but not limited to 10*10 patterns,
Specific design can according to the actual requirements be carried out.The microlens array that the rotation gyration of microlens array 3 refers to rectangle is relative
In an angle of dispersion direction.If do not rotated, spectrum has overlap each other, have rotated angle, and spectrum is each other
Do not have overlap, and the rotation gyration be according to spectral resolution, the pixel number of detector and Pixel size and
The number of arrays of lenticule is calculated and obtained.
On the basis of above-mentioned spectrometer imaging system, the system spectrum scope is 400nm-900nm, system spectrum point
Resolution R=650, system visual field size is 1.2 ° × 1.2 °.
Wherein, the pattern of the microlens array 3 is 10 × 10, and the anglec of rotation is 26.565 °, the front end imaging device 1
Spectral region is 400-900nm, and spectral resolution R=650, visual field size is 1.2 ° × 1.2 °, can avoid adjacent spectrum
Overlap, and improve the utilization rate of detector 7.
A kind of spectrometer imaging system that the present invention is provided, when the spectral information that can not only shorten target object is obtained
Between, but also three-dimensional light spectrum information and spatial information can be obtained according to different patterns.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (8)
1. a kind of spectrometer imaging system, it is characterised in that including：
For target object to be imaged in into microlens array, the front end imaging device of target object image is formed；
For the target object image to be carried out into visual field segmentation, the microlens array of the unit picture of multiple difference visual fields is formed,
The microlens array is arranged at the focal plane of the front end imaging device；
Rear end imaging device for the unit picture of the multiple different visual fields to be converged at detector；
Unit picture for the multiple different visual fields after by convergence carries out data processing and obtains three-dimensional spectral information, or will
The target object image carries out the detector that data processing obtains three-dimensional spatial information.
2. spectrometer imaging system as claimed in claim 1, it is characterised in that the front end imaging device is remote for obtaining
The telescopic system of the target object image of distance.
3. spectrometer imaging system as claimed in claim 2, it is characterised in that also include：
It is arranged between the front end imaging device and the microlens array, for the target object image to be coupled into institute
State the relay of microlens array.
4. the spectrometer imaging system as described in any one of claims 1 to 3, it is characterised in that also include：
It is arranged between the microlens array and the rear end imaging device, for by the unit picture of the multiple different visual fields
Be converted to the collimating element of directional light.
5. spectrometer imaging system as claimed in claim 4, it is characterised in that the rear end imaging device also includes：
It is arranged between the collimating element and the detector, the beam splitter for carrying out dispersion to the directional light.
6. spectrometer imaging system as claimed in claim 5, it is characterised in that the beam splitter is prism-grating-prism
Type dispersion element, the grating is volume holographic grating.
7. spectrometer imaging system as claimed in claim 6, it is characterised in that the microlens array pattern is 10 × 10,
The anglec of rotation is 26.565 °.
8. spectrometer imaging system as claimed in claim 7, it is characterised in that system spectrum scope is 400nm-900nm, is
System spectral resolution R=650, system visual field size is 1.2 ° × 1.2 °.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106731A (en) * | 2017-12-20 | 2018-06-01 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer and production method based on stepped phase speculum |
| CN108180992A (en) * | 2017-12-20 | 2018-06-19 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer based on micro- imaging lens array with stepped phase speculum |
| CN113155283A (en) * | 2021-03-31 | 2021-07-23 | 中国科学院长春光学精密机械与物理研究所 | Online radiation calibration method for micro-lens array type spectrometer |
| CN115597710A (en) * | 2022-10-08 | 2023-01-13 | 长春理工大学（Cn） | Microlens array module integrated field of view polarization imaging spectrometer system and imaging method |
| CN115615932A (en) * | 2022-10-08 | 2023-01-17 | 长春理工大学 | Polarization imaging spectrometer system and polarization imaging spectrometer imaging method |
| CN116105862A (en) * | 2023-04-13 | 2023-05-12 | 中国科学院长春光学精密机械与物理研究所 | Spectrum detection system based on target surface segmentation and pixel level light splitting and preparation method thereof |
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| US20140055784A1 (en) * | 2012-08-23 | 2014-02-27 | Logos Technologies, Llc | Camera system for capturing two-dimensional spatial information and hyper-spectral information |
| CN105974573A (en) * | 2016-06-02 | 2016-09-28 | 苏州大学 | Light field spectrum microscopic imaging method and system based on microlens array |
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| US20140055784A1 (en) * | 2012-08-23 | 2014-02-27 | Logos Technologies, Llc | Camera system for capturing two-dimensional spatial information and hyper-spectral information |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106731A (en) * | 2017-12-20 | 2018-06-01 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer and production method based on stepped phase speculum |
| CN108180992A (en) * | 2017-12-20 | 2018-06-19 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer based on micro- imaging lens array with stepped phase speculum |
| CN108180992B (en) * | 2017-12-20 | 2019-12-13 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer based on micro imaging mirror array and step phase reflector |
| CN108106731B (en) * | 2017-12-20 | 2020-04-10 | 中国科学院长春光学精密机械与物理研究所 | Snapshot imaging spectrometer based on step phase reflector and manufacturing method |
| CN113155283A (en) * | 2021-03-31 | 2021-07-23 | 中国科学院长春光学精密机械与物理研究所 | Online radiation calibration method for micro-lens array type spectrometer |
| CN115597710A (en) * | 2022-10-08 | 2023-01-13 | 长春理工大学（Cn） | Microlens array module integrated field of view polarization imaging spectrometer system and imaging method |
| CN115615932A (en) * | 2022-10-08 | 2023-01-17 | 长春理工大学 | Polarization imaging spectrometer system and polarization imaging spectrometer imaging method |
| CN115597710B (en) * | 2022-10-08 | 2024-03-08 | 长春理工大学 | Microlens array module integration view field polarization imaging spectrometer system and imaging method |
| CN116105862A (en) * | 2023-04-13 | 2023-05-12 | 中国科学院长春光学精密机械与物理研究所 | Spectrum detection system based on target surface segmentation and pixel level light splitting and preparation method thereof |
| CN116105862B (en) * | 2023-04-13 | 2023-07-14 | 中国科学院长春光学精密机械与物理研究所 | Spectrum detection system based on target surface segmentation and pixel level light splitting and preparation method thereof |
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