CN205679316U - A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor - Google Patents
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor Download PDFInfo
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- CN205679316U CN205679316U CN201620413613.2U CN201620413613U CN205679316U CN 205679316 U CN205679316 U CN 205679316U CN 201620413613 U CN201620413613 U CN 201620413613U CN 205679316 U CN205679316 U CN 205679316U
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- microlens array
- self adaptation
- spectrum
- array sensor
- digital zoom
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Abstract
This utility model discloses a kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor, including electric control belt pass filter, optical imaging lens, self adaptation microlens array sensor, dispersion self adaptive imaging controller, image acquisition and processing terminal.This utility model can be while spectrum imaging system spectrum picture sequence scanning, obtain the spatial frequency field information of each spectrum picture, the digital zoom functions focused after realizing first exposure image, and carry out self adaptation De-dispersion raising digital zoom performance, eliminate the dispersive influence that spectral scan on a large scale brings to the full extent, the acquisition of complicated topography and geomorphology spectral image information is ensure that on to greatest extent, when complicated topography and geomorphology is carried out remote sensing, can obtain and become apparent from and image information and spectral information more accurately, expand major function and the range of application of existing optical spectrum imagers.
Description
Technical field
This utility model relates to spectral imaging technology field, specifically refers to a kind of based on self adaptation microlens array sensor
Digital zoom optical spectrum imagers.
Background technology
Spectrum imaging system can obtain image and the spectral information of target simultaneously, is a kind of " performance is complete ", collection of illustrative plates unification
Optical pickocff, current optical spectrum imagers can realize that adjustable band is many, spectral resolution strong and spatial resolution
Advantages of higher, is properly applied to the remote sensing fields such as airborne, spaceborne of staring imaging, for relevant departments provide mineral resource reconnaissance,
The new technique means of biomedical diagnostic, agricultural pest monitoring etc..But in actual remote sensing application, due to remote sensing pair
The topography and geomorphology skewness of elephant, in order to obtain remote sensing images clearly, needs to carry out zoom manipulation according to topography and geomorphology.?
In spectral imaging technology based on bandpass filter, spectral information is to carry out sequence scanning by bandpass filter, during with needs
Between the zoom manipulation that controls there is bigger conflict.
Current spectrum imaging system when complicated topography and geomorphology is carried out remote sensing, have that definition is low, distortion, Yi Ji great
The problem of the dispersive influence that range of spectra imaging brings.
Utility model content
The purpose of this utility model is to provide a kind of digital zoom spectrum based on self adaptation microlens array sensor
Imager, it is achieved focusing the light spectrum image-forming function of De-dispersion after first exposure image, reaches carrying out distant to complicated topography and geomorphology
During sense detection, it is possible to obtain become apparent from and image information and spectral information more accurately, expand existing optical spectrum imagers
Major function and the purpose of range of application.
The purpose of this utility model is achieved through the following technical solutions:
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor, it is characterised in that including:
Electric control belt pass filter: the light of object under test, after the filtration of electric control belt pass filter, is sent to light
Learn imaging lens；
Optical imaging lens: for the target light source received being converted into optical imagery and being transported to self adaptation lenticule
Sensor array；
Self adaptation microlens array sensor: the light from object under test sequentially passes through electric control belt pass filter, optics
Imaging lens arrives the focal plane of self adaptation microlens array sensor, the final spectrum of self adaptation microlens array sensor acquisition
The space pixel that image is corresponding provides corresponding spatial frequency field information, and is transferred to image acquisition and processing terminal；
Dispersion self adaptive imaging controller: the scanning spectral coverage of Real-time Collection electric control belt pass filter, is adjusted by automatically controlled mode
The focal length of whole self adaptation microlens array sensor, the most persistently output sequence spectrum picture is to image acquisition and processing terminal；
Image acquisition and processing terminal: while keeping sequential spectrum picture record and processing, extract each spectrogram
As all spatial frequency field information of pixel, by optimizing and combining the light of the different space frequency in each spectrum picture pixel
Information, and carry out calculating the digital zoom functions obtaining spectrum picture, finally processes sequential spectrum picture and three
Dimension space shows.
Optical spectrum imagers of the present utility model, the light that object under test sends is through the filtration of electric control belt pass filter
After, it is sent to optical imaging lens and carries out optical imagery, then the image of optical imagery is passed through self adaptation microlens array
Sensor carries out the collection of image information, obtains spatial image information and the field information of each pixel of object under test simultaneously, passes
Being defeated by image acquisition and processing terminal, image processing terminal utilizes the field information of each pixel to carry out digital zoom manipulation, can
To realize in the light spectrum image-forming data of single exposure collection the extraction of object picture rich in detail at different distance.This method exists
While not affecting sequential light spectrum image-forming function, simple Digital Image Processing function and microlens array sensor is utilized to provide
Light field spectral image information, it is achieved that the digital zoom manipulation after single exposure imaging, improve spectrum imaging system to multiple
Miscellaneous landforms, the function of the far and near clear light spectrum image-forming of object；Simultaneously because have employed self adaptation microlens array sensor, at big light
In the light spectrum image-forming application of spectral limit, owing to using dispersion correction, such that it is able to object at different distance is passed through digital zoom
Obtain picture rich in detail.This utility model uses self adaptation microlens array sensor to carry out the decomposition of image information, by optics
The extraneous image information of lens focusing has carried out the lifting of pixel, can be at spectrum imaging system spectrum picture sequence scanning
Meanwhile, obtain the spatial frequency field information of each spectrum picture, it is achieved after first exposure image focusing digital zoom functions and
Carrying out self adaptation De-dispersion and improve digital zoom performance, this optical spectrum imagers based on microlens array sensor should in remote sensing
Used time is made without the manipulation of optical lens zoom, simultaneously the elimination dispersion shadow to digital zoom when spectral scan on a large scale
Ring；Overcome manipulation contradiction of the prior art, and digital zoom type spectrum based on self adaptation microlens array sensor
Imaging system, can apply to the light spectrum image-forming remote sensing application of complicated topography and geomorphology, eliminates spectrum on a large scale to the full extent
The dispersive influence brought of scanning, to greatest extent on ensure that the acquisition of complicated topography and geomorphology spectral image information, both ensured light
Learn the definition of image information outside lens focusing region, ensured again the accuracy of spectral information, it is possible to achieve first exposure image
The light spectrum image-forming function of rear focusing De-dispersion, when carrying out remote sensing to complicated topography and geomorphology, it is possible to obtain become apparent from
With image information and spectral information more accurately, expand major function and the range of application of existing optical spectrum imagers.
Described self adaptation microlens array sensor includes self adaptation microlens array dough-making powder imaging detector, optical imagery
Camera lens forms conjugation with surface imaging detector relative to self adaptation microlens array.Concretely, by by optical imaging lens
Form conjugation with surface imaging detector relative to self adaptation microlens array, i.e. optical imaging lens is positioned at self adaptation lenticule battle array
On the object plane of row, surface imaging detector is positioned in the image plane of self adaptation microlens array；List on self adaptation microlens array
The lenticular size of unit and distribution, be divided into surface imaging detector and unit self-adapting lenticule region one to one, connect
Receive the imaging light eventually through bandpass filter and self adaptation microlens array；With unit self-adapting lenticule one to one
Detector subregion constitutes a pixel of final image, simultaneously all spatial frequency light fields letter of this this position of subregion record
Breath；Described dispersion self adaptive imaging controller, the scanning spectral coverage of Real-time Collection electric control belt pass filter, adjusted by automatically controlled mode
The focal length of whole self adaptation microlens array, the most persistently output sequence spectrum picture is to image acquisition and processing terminal；Described
Image acquisition and processing terminal, while record sequential spectrum picture, record the field information of each object space, according to light field
Information can carry out digital zoom to the sequential spectrum picture of record, thus obtains complicated landform geomorphologic map picture clearly, and real
Spectrum letter the most accurately.
The lenticule number of unit of described wherein self adaptation microlens array is that M*N, M and N are natural number.By self adaptation
Its lenticule number of unit of microlens array is M*N, and tradition its number of pixels of surface imaging detector is KM*KN, in conjunction with being formed
Novel surface imaging detector, this surface imaging detector is while recording original spectral image information, and its spectrum picture space is divided
Resolution is M*N, it is also possible to records the spatial frequency field information of each spectrum picture pixel, i.e. this field information and is visited by surface imaging
Survey the sub-district record of each K*K array of device, utilize this novel sensor can realize digital zoom functions；Utilize self adaptation
The automatically controlled varifocal performance of microlens array, can eliminate microlens array pass when the light spectrum image-forming of spectral scan on a large scale
The dispersive influence brought of sensor.
Described self adaptation microlens array is LCD self-adapting microlens array.
This utility model compared with prior art, has such advantages as and beneficial effect:
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor of 1 this utility model, uses certainly
Adapt to microlens array sensor and carry out the decomposition of image information, obtain spatial image information and the light field of each pixel simultaneously
Information, it is achieved the clear digital image of object at different distance；Can same at spectrum imaging system spectrum picture sequence scanning
Time, obtain the spatial frequency field information of each spectrum picture, it is achieved the digital zoom functions of focusing after first exposure image, go forward side by side
Row self adaptation De-dispersion improves digital zoom performance, and this optical spectrum imagers based on microlens array sensor is in remote sensing application
Time be made without zoom manipulation, simultaneously eliminate the dispersion impact on digital zoom when spectral scan on a large scale；Overcome existing
There is the manipulation contradiction in technology, and digital zoom type spectrum imaging system based on self adaptation microlens array sensor, can
To be applied to the light spectrum image-forming remote sensing application of complicated topography and geomorphology, eliminate the color that spectral scan on a large scale brings to the full extent
Dissipate impact, to greatest extent on ensure that the acquisition of complicated topography and geomorphology spectral image information, both ensured the clear of image information
Degree, has ensured again the accuracy of spectral information, it is possible to achieve focusing the light spectrum image-forming function of De-dispersion after first exposure image,
When complicated topography and geomorphology is carried out remote sensing, it is possible to obtain become apparent from image information and more accurately spectrum believe
Breath, expands major function and the range of application of existing optical spectrum imagers；
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor of 2 this utility model, light studies
It is micro-that picture camera lens and surface imaging detector are positioned at self adaptation relative to self adaptation microlens array formation conjugation, i.e. optical imaging lens
On the object plane of lens arra, surface imaging detector is positioned in the image plane of self adaptation microlens array；Surface imaging detector quilt
Self adaptation microlens array is divided into and unit microlens subregion one to one, and the spatial resolution of final image is with adaptive
The number of unit answering microlens array is consistent；The surface imaging detector subregion split by unit microlens is final spectrum picture
Corresponding space pixel provides corresponding spatial frequency field information.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by this utility model embodiment, constitutes the one of the application
Part, is not intended that the restriction to this utility model embodiment.In the accompanying drawings:
Fig. 1 is principle framework structural representation of the present utility model；
Fig. 2 is single-point pixel field information recording principle schematic diagram of the present utility model；
Fig. 3 is digital zoom operation principle schematic diagram of the present utility model；
Fig. 4 is the dispersive influence schematic diagram that this utility model carries out when spatial frequency light field is extracted；
Fig. 5 is this utility model De-dispersion schematic diagram.
Labelling and corresponding parts title in accompanying drawing:
1-object under test, 2-electric control belt pass filter, 3-optical imaging lens, 4-self adaptation microlens array sensor,
401-self adaptation microlens array, 402-surface imaging detector, 5-image acquisition and processing terminal, the red object point to be measured of 6-, 7-
Green object point to be measured, the blue object point to be measured of 8-.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and explanation thereof are only used for explaining this
Utility model, is not intended as restriction of the present utility model.
Embodiment
As it is shown in figure 1, a kind of digital zoom light spectrum image-forming based on self adaptation microlens array sensor of this utility model
Instrument, including electric control belt pass filter 2, optical imaging lens 3, self adaptation microlens array sensor 4 and image acquisition and place
Reason terminal 5, wherein self adaptation microlens array sensor 4 is by self adaptation microlens array 401 dough-making powder imaging detector 402 groups
Becoming, the lenticule number of unit of self adaptation microlens array 401 is M*N, self adaptation microlens array 401 and traditional surface imaging
Detector 402 combines and forms novel surface imaging detector, and the number of pixels of surface imaging detector 402 is KM*KN, and this surface imaging is visited
Survey device is while recording original spectral image information, and spectrum picture spatial resolution is M*N, it is also possible to record each spectrogram
As the spatial frequency field information of pixel, this field information is by the sub-district record of each K*K array of surface imaging detector；Its
In, the light from object under test 1 sequentially passes through electric control belt pass filter 2, optical imaging lens 3 arrives self adaptation lenticule battle array
The focal plane of sensor 4, as shown in the light in Fig. 1, it is micro-that object under test is imaged on self adaptation through optical imaging lens
The position of lens array, i.e. self adaptation microlens array is in the image plane of optical imaging lens；Imaging lens and surface imaging
Detector forms conjugation relative to self adaptation microlens array, i.e. imaging lens is positioned on the object plane of microlens array, and face becomes
As detector is positioned in the image plane of self adaptation microlens array；Surface imaging detector by self adaptation microlens array be divided into
The number of unit one of unit microlens subregion one to one, the spatial resolution of final image and self adaptation microlens array
Cause；The surface imaging detector subregion split by unit self-adapting lenticule provides for the space pixel that final spectrum picture is corresponding
Corresponding spatial frequency field information, the array of subregion is K*K, according to the spatial resolution requirements of spectrum picture, K value model
It is the most suitable to be trapped among between 5 to 20.
If Fig. 2 is the single-point pixel light field of this utility model optical spectrum imagers based on self adaptation microlens array sensor
Information recording principle schematic diagram, as shown in Figure 2, at thing side A the light of red object point to be measured through electric control belt pass filter 2,
Optical imaging lens 3 is imaged in self adaptation microlens array sensor 4, and the face in self adaptation microlens array sensor 4 becomes
As detector is while self adaptation microlens array resolution spectra re-recorded image information, record each spectrum picture pixel
Spatial frequency field information；In like manner, the principle of digital zoom work is as shown in Figure 3, red object point 6 to be measured at thing side A, green
Three unit being imaged on respectively on self adaptation microlens array sensor 4 at color object point to be measured 7, blue object point 8 three to be measured are micro-
At lens, the surface imaging detector in self adaptation microlens array sensor 4 is recording red object point to be measured 6, green determinand
While point 7, the spectral image information of blue object point 8 to be measured, according to the position of unit microlens simultaneously with K*K An arrayed recording its
Spatial frequency field information, the spatial frequency light field that in this K*K array subregion, the corresponding object point to be measured of each pixel is different
Information, by choosing particular space frequency light field as shown in Figure 3 for each determinand point numeral, abandons other light simultaneously
Field information, is combined into the spectrum picture of new self adaptation microlens array resolution, it is possible to obtain at thing side B, object under test is clear
Clear picture, this has substantial promise for the remote sensing survey definition of complicated topography and geomorphology, the most this more exact figure
Zoom mode can obtain object under test spectral information the most accurately.
Fig. 4 be the effect of dispersion in spectral scan on a large scale on spatial frequency field information and the impact of digital zoom,
The automatically controlled scanning spectral coverage that arranges of electric control belt pass filter 2 is respectivelyWithTime, colour killing is not carried out due to common microlens array
Difference work, the focal length of micro-lens array that the light of different spectral coverage is corresponding is different, optical imaging lens 3The light of spectral coverage can be through
Cross microlens array and successfully focus on surface imaging detector, optical imaging lens 3The light of spectral coverage is through microlens array
Cannot focus on surface imaging detector, therefore cannot completely obtain the spatial frequency light field letter of spectrum picture at out of focus spectral coverage
Breath, and then digital zoom performance when affecting spectral scan on a large scale and spectrum picture treatment effect.
Fig. 5 is to use De-dispersion self adaptive imaging controller and self adaptation microlens array to carry out the work of De-dispersion former
Reason schematic diagram,Moment, when the spectral deploying of electric control belt pass filter 2 isTime, by De-dispersion self adaptive imaging controller 9
The spectrum of Real-time Collection electric control belt pass filter 2, the on-load voltage arranging self adaptation microlens array 4 is, by adaptive
The focal length answering microlens array is set to f0, now optical imaging lens 3The light of spectral coverage can become through microlens array
Merit focuses on surface imaging detector 402；Moment, when the spectral deploying of electric control belt pass filter 2 isTime, pass through De-dispersion
The spectrum of self adaptive imaging controller 9 Real-time Collection electric control belt pass filter 2, arranges self adaptation microlens array 401
On-load voltage is, due to the automatically controlled adjustable characteristics of self adaptation microlens array 41 focal length, now self adaptation microlens array 401
Focal length can also be adjusted to, now optical imaging lensThe light of spectral coverage successfully can focus on through microlens array
On surface imaging detector, so eliminate on a large scale in light spectrum image-forming effect of dispersion to digital zoom and the shadow of imaging definition
Ring.
Above-described detailed description of the invention, is entered the purpose of this utility model, technical scheme and beneficial effect
One step describes in detail, be it should be understood that and the foregoing is only detailed description of the invention of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all within spirit of the present utility model and principle, any amendment, the equivalent made are replaced
Change, improvement etc., within should be included in protection domain of the present utility model.
Claims (4)
1. a digital zoom optical spectrum imagers based on self adaptation microlens array sensor, it is characterised in that including:
Electric control belt pass filter (2): the light of object under test (1), after the filtration of electric control belt pass filter (2), is sent into
To optical imaging lens (3)；
Optical imaging lens (3): for the target light source received being converted into optical imagery and being transported to self adaptation lenticule
Sensor array (4)；
Self adaptation microlens array sensor (4): the light from object under test (1) sequentially pass through electric control belt pass filter (2),
Optical imaging lens (3) arrives the focal plane of self adaptation microlens array sensor (4), self adaptation microlens array sensor
(4) gather the spatial frequency field information that space pixel corresponding to final spectrum picture provides corresponding, and be transferred to image acquisition
With processing terminal (5)；
Dispersion self adaptive imaging controller (9): the scanning spectral coverage of Real-time Collection electric control belt pass filter, is adjusted by automatically controlled mode
The focal length of self adaptation microlens array sensor (4), the most persistently output sequence spectrum picture is to image acquisition and processing terminal
(5)；
Image acquisition and processing terminal (5): while keeping sequential spectrum picture record and processing, extract each spectrum picture
All spatial frequency field information of pixel, by optimizing and combining the light field of the different space frequency in each spectrum picture pixel
Information, and carry out calculating the digital zoom functions obtaining spectrum picture, finally sequential spectrum picture is processed and three-dimensional
Space shows.
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor the most according to claim 1,
It is characterized in that: described self adaptation microlens array sensor (4) includes self adaptation microlens array (401) dough-making powder imaging detection
Device (402), optical imaging lens (3) is formed altogether relative to self adaptation microlens array (401) with surface imaging detector (402)
Yoke.
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor the most according to claim 2,
It is characterized in that: the lenticule number of unit of described wherein self adaptation microlens array (401) is that M*N, M and N are natural number.
A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor the most according to claim 1,
It is characterized in that: described self adaptation microlens array (401) is LCD self-adapting microlens array.
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| CN201620413613.2U CN205679316U (en) | 2016-05-10 | 2016-05-10 | A kind of digital zoom optical spectrum imagers based on self adaptation microlens array sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806480A (en) * | 2016-05-10 | 2016-07-27 | 中国工程物理研究院流体物理研究所 | Digital zooming spectrum imager based on self-adaptive micro-lens array sensor |
-
2016
- 2016-05-10 CN CN201620413613.2U patent/CN205679316U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806480A (en) * | 2016-05-10 | 2016-07-27 | 中国工程物理研究院流体物理研究所 | Digital zooming spectrum imager based on self-adaptive micro-lens array sensor |
| CN105806480B (en) * | 2016-05-10 | 2018-10-12 | 中国工程物理研究院流体物理研究所 | A kind of digital zoom optical spectrum imagers based on adaptive microlens array sensor |
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Granted publication date: 20161109 Termination date: 20180510 |