CN205679317U - A kind of digital zoom type optical spectrum imagers based on microlens array sensor - Google Patents
A kind of digital zoom type optical spectrum imagers based on microlens array sensor Download PDFInfo
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- CN205679317U CN205679317U CN201620413615.1U CN201620413615U CN205679317U CN 205679317 U CN205679317 U CN 205679317U CN 201620413615 U CN201620413615 U CN 201620413615U CN 205679317 U CN205679317 U CN 205679317U
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Abstract
This utility model discloses a kind of digital zoom type optical spectrum imagers based on microlens array sensor, including electric control belt pass filter: the light of object under test, after the filtration of electric control belt pass filter, is sent to optical imaging lens；Optical imaging lens: for the target light source received being converted into optical imagery and being transported to microlens array sensor；Microlens array sensor: the light from object under test sequentially passes through electric control belt pass filter, the focal plane of optical imaging lens arrival microlens array sensor, the space pixel that the final spectrum picture of microlens array sensor acquisition is corresponding provides corresponding spatial frequency field information, and is transferred to image acquisition and processing terminal；Image acquisition and processing terminal: carry out imaging processing according to the spatial frequency field information collected, form image.This utility model uses microlens array sensor to carry out the decomposition of image information, the optical information that gathers of figure has been carried out the lifting of pixel, can be while spectrum imaging system spectrum picture sequence scanning, obtain the field information of each spectrum picture, it is achieved the digital zoom functions of focusing after first exposure image.
Description
Technical field
This utility model relates to spectral imaging technology field, specifically refers to a kind of numeral based on microlens array sensor
Zoom type 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, exists that definition is low, the problem of distortion.
Utility model content
The purpose of this utility model is to provide a kind of digital zoom type light spectrum image-forming based on microlens array sensor
Instrument, carries out sequence scanning by bandpass filter in solution prior art and manipulates what existence conflicted with the zoom requiring time for controlling
Problem, reaches when complicated topography and geomorphology is carried out remote sensing, it is possible to obtain become apparent from and image information and more accurate
Spectral information, expand the major function of existing optical spectrum imagers 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 type optical spectrum imagers based on microlens array sensor, 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 microlens array biography
Sensor；
Microlens array sensor: the light from object under test sequentially passes through electric control belt pass filter, optical imaging lens
Head arrives the focal plane of microlens array sensor, the space pixel that the final spectrum picture of microlens array sensor acquisition is corresponding
Corresponding spatial frequency field information is provided, and is transferred to image acquisition and processing terminal；
Image acquisition and processing terminal: carry out imaging processing according to the spatial frequency field information collected, form image.
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 entered through microlens array sensor
The collection of row image information, obtains spatial image information and the field information of each pixel of object under test simultaneously, is transferred to figure
As gathering and processing terminal, image processing terminal utilizes the field information of each pixel to carry out digital zoom manipulation, can be one
The light spectrum image-forming data that secondary exposure gathers realize the extraction of object picture rich in detail at different distance.This method is not affecting
While sequential light spectrum image-forming function, utilize the light field that simple Digital Image Processing function and microlens array sensor provide
Spectral image information, it is achieved that after single exposure imaging digital zoom manipulation, improve spectrum imaging system to complex landform,
The function of the far and near clear light spectrum image-forming of object.This utility model uses microlens array sensor to carry out dividing of image information
Solve, the field information of each spectrum picture can be obtained while spectrum imaging system spectrum picture sequence scanning, it is achieved first
The digital zoom functions of focusing after exposure image, this optical spectrum imagers based on microlens array sensor is when remote sensing application
It is made without zoom manipulation；Overcome manipulation contradiction of the prior art, and numeral based on microlens array sensor
Zoom type spectrum imaging system, can apply to the light spectrum image-forming remote sensing application of complicated topography and geomorphology, to greatest extent on ensure that
The acquisition of complicated topography and geomorphology spectral image information, had both ensured the definition of the outer image information of optical lens focusing area, again
Ensure the accuracy of spectral information.
Microlens array sensor includes that microlens array dough-making powder imaging detector, optical imaging lens detect with surface imaging
Device forms conjugation relative to microlens array.Concretely, by by optical imaging lens with surface imaging detector relative to micro-
Lens arra forms conjugation, i.e. optical imaging lens is positioned on the object plane of microlens array, and surface imaging detector is positioned at micro-
In the image plane of lens array；Surface imaging detector is divided into and unit microlens subregion one to one by microlens array,
The spatial resolution of final image is consistent with the number of unit of microlens array；The surface imaging detector split by unit microlens
Subregion provides the spatial frequency field information of correspondence for the space pixel that final spectrum picture is corresponding.
Described microlens array is the K*K lens matrix being arranged to make up by lenticule, the natural number of K ∈ [50,20].Enter one
Step is said, during actual experiment and theory analysis, it is found by the applicant that the matrix unit quantitative relation of microlens array is to figure
The definition of picture and digital zoom manipulation scope, through experiments up to ten thousand time and analysis, applicant have determined that one relatively reasonable
Matrix scope, when lenticule is arranged in the matrix of 5*5～20*20, imaging definition and zoom manipulation scope higher.
This utility model compared with prior art, has such advantages as and beneficial effect:
A kind of digital zoom type optical spectrum imagers based on microlens array sensor of 1 this utility model, microlens array
Sensor carries out the decomposition of image information, obtains spatial image information and the field information of each pixel, it is achieved different simultaneously
The clear digital image of distance object；Each light can be obtained while spectrum imaging system spectrum picture sequence scanning
The field information of spectrogram picture, it is achieved the digital zoom functions of focusing after first exposure image, this based on microlens array sensor
Optical spectrum imagers be made without when remote sensing application zoom manipulation；Overcome manipulation contradiction of the prior art, Er Qieji
In the digital zoom type spectrum imaging system of microlens array sensor, the light spectrum image-forming that can apply to complicated topography and geomorphology is distant
Sensing use, 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；
A kind of digital zoom type optical spectrum imagers based on microlens array sensor of 2 this utility model, optical imaging lens
Head forms conjugation with surface imaging detector relative to microlens array, i.e. optical imaging lens is positioned at the object plane of microlens array
On, surface imaging detector is positioned in the image plane of microlens array；Surface imaging detector is divided into by microlens array and unit
Lenticule subregion one to one, the spatial resolution of final image is consistent with the number of unit of microlens array；By unit
The surface imaging detector subregion of lenticule segmentation provides the spatial frequency of correspondence for the space pixel that final spectrum picture is corresponding
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 multipoint digital zoom operation principle schematic diagram of the present utility model.
Labelling and corresponding parts title in accompanying drawing:
1-object under test, 2-electric control belt pass filter, 3-optical imaging lens, 4-microlens array sensor, 401-is micro-
Lens arra, 402-surface imaging detector, 5-image acquisition and processing terminal, the red object point to be measured of 6-, the green object point to be measured of 7-,
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 type optical spectrum imagers based on microlens array sensor of this utility model, bag
Include electric control belt pass filter 2, optical imaging lens 3, microlens array sensor 4 and image acquisition and processing terminal 5, its
Middle microlens array sensor 4 is made up of microlens array 401 dough-making powder imaging detector 402；Wherein, from object under test 1
Light sequentially passes through electric control belt pass filter 2, optical imaging lens 3 arrives the focal plane of microlens array sensor 4, such as Fig. 1
In light shown in, object under test 1 is imaged on the position of microlens array 401, i.e. lenticule battle array through optical imaging lens 3
Row 401 are in the image plane of optical imaging lens 3；Optical imaging lens 3 and surface imaging detector 402 are relative to lenticule battle array
Row 401 form conjugation, i.e. optical imaging lens 3 is positioned on the object plane of microlens array 401, and surface imaging detector 402 is positioned at
In the image plane of microlens array 401；Surface imaging detector 402 is divided into unit microlens one by one by microlens array 401
Corresponding subregion, the spatial resolution of final image is consistent with the number of unit of microlens array 401；Divided by unit microlens
The surface imaging detector subregion cut provides the spatial frequency field information of correspondence for the space pixel that final spectrum picture is corresponding,
The array of subregion is K × K, and according to the spatial resolution requirements of spectrum picture, K span is the most suitable between 5 to 20.
If Fig. 2 is the single-point pixel of this utility model digital zoom based on microlens array sensor type optical spectrum imagers
Field information recording principle schematic diagram, at thing side A, the light of red object point 6 to be measured is through electric control belt pass filter 2, optical imagery
Camera lens 3 is imaged in microlens array sensor 4, and the surface imaging detector in microlens array sensor 4 is with lenticule battle array
While column split rate spectra re-recorded image information, record the spatial frequency field information of each spectrum picture pixel；In like manner, number
The principle of word zoom operation as shown in Figure 3, red object point 6 to be measured, green object point 7 to be measured, blue object point 8 to be measured at thing side A
At three unit microlens being imaged on respectively at three on microlens array sensor 4, the face in microlens array sensor 4 becomes
As detector is while recording the spectral image information of red object point to be measured 6, green object point 7 to be measured, blue object point 8 to be measured,
Position according to unit microlens is simultaneously with its spatial frequency field information of K*K An arrayed recording, every in this K*K array subregion
The spatial frequency field information that the most corresponding object point to be measured of individual pixel is different, by choosing as in Fig. 3 for each determinand point numeral
Shown particular space frequency light field, abandons other field information simultaneously, is combined into new microlens array resolution
Spectrum picture, it is possible to obtain at thing side B object under test clearly as, this is for the remote sensing survey definition tool of complicated topography and geomorphology
Having substantial promise, the most this more exact figure zoom mode can obtain object under test spectral information the most accurately.
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 (3)
1. a digital zoom type optical spectrum imagers based on 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 microlens array biography
Sensor (4)；
Microlens array sensor (4): the light from object under test (1) sequentially passes through electric control belt pass filter (2), light studies
As camera lens (3) arrives the focal plane of microlens array sensor (4), microlens array sensor (4) gathers final spectrum picture
Corresponding space pixel provides corresponding spatial frequency field information, and is transferred to image acquisition and processing terminal (5)；
Image acquisition and processing terminal (5): carry out imaging processing according to the spatial frequency field information collected, form image.
A kind of digital zoom type optical spectrum imagers based on microlens array sensor the most according to claim 1, it is special
Levy and be: microlens array sensor (4) includes microlens array (401) dough-making powder imaging detector (402), optical imaging lens
(3) conjugation is formed with surface imaging detector (402) relative to microlens array (401).
A kind of digital zoom type optical spectrum imagers based on microlens array sensor the most according to claim 2, it is special
Levy and be: described microlens array (401) is the K*K lens matrix being arranged to make up by lenticule, the natural number of K ∈ [50,20].
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| CN201620413615.1U CN205679317U (en) | 2016-05-10 | 2016-05-10 | A kind of digital zoom type optical spectrum imagers based on microlens array sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737985A (en) * | 2016-05-10 | 2016-07-06 | 中国工程物理研究院流体物理研究所 | Digital zooming spectrum imager based on microlens array sensor |
| CN109239067A (en) * | 2018-08-31 | 2019-01-18 | 天津大学 | A kind of ultrashort burnt visual imaging detection method of miniaturization |
| CN110082360A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院光电技术研究所 | A kind of sequence optical element surface on-line detection device of defects and method based on array camera |
-
2016
- 2016-05-10 CN CN201620413615.1U patent/CN205679317U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737985A (en) * | 2016-05-10 | 2016-07-06 | 中国工程物理研究院流体物理研究所 | Digital zooming spectrum imager based on microlens array sensor |
| CN109239067A (en) * | 2018-08-31 | 2019-01-18 | 天津大学 | A kind of ultrashort burnt visual imaging detection method of miniaturization |
| CN110082360A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院光电技术研究所 | A kind of sequence optical element surface on-line detection device of defects and method based on array camera |
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