CN209589428U - A kind of common optical axis calibrator of multispectral camera - Google Patents
A kind of common optical axis calibrator of multispectral camera Download PDFInfo
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- CN209589428U CN209589428U CN201920415886.4U CN201920415886U CN209589428U CN 209589428 U CN209589428 U CN 209589428U CN 201920415886 U CN201920415886 U CN 201920415886U CN 209589428 U CN209589428 U CN 209589428U
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- scale target
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- reflecting mirror
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Abstract
The utility model discloses a kind of common optical axis calibrator of multispectral camera, calibrator includes laser generator, optical lens, the first test scale target, the second test scale target, spectroscope and reflecting mirror.Wherein, laser generator mainly provides thin collimated laser beam；First test scale target and the second test scale target are as the foundation tuned up；Optical lens is used to directional light converging to focal position.When tune-up, taking-up reflecting mirror, the adjustment each regulator site of spectroscope make the laser beam of laser transmitter projects out in the center of the first test scale target first；After adjusting spectroscope, it is inserted into reflecting mirror, the laser beam that the adjustment each regulator site of reflecting mirror goes out laser transmitter projects is in the center of the second scale test target.Specific calibrating installation calibrates the optical axis of front end optical path, preferably facilitates later image fusion registration.
Description
Technical field
The utility model relates to status of electric power detection fields, more particularly to a kind of common optical axis school of multispectral camera
Adjust device.
Background technique
Multispectral camera is the different spectral coverage image that same ground object target is obtained using different spectrums, passes through different spectrums
The fusion of section image, can obtain the geometry and spectral properties of earth's surface scenery simultaneously, be with a wide range of applications.Multispectral phase
Machine be widely used at present aerospace investigation, state resource investigation and monitor, prevent and reduce natural disasters, agriculture, forestry, water conservancy, ecological environment,
The fields such as city construction planning and building.
In the prior art, high-tension electricity equipment in operation, due to acting on while voltage and current, can generate fuel factor
And corona effect.Power grid operation maintenance personnel is to grasp the operating status of equipment, generallys use infrared thermoviewer and ultraviolet imager pair
Electrical equipment thermometric and ultraviolet imagery.
It, can be because optical axis deviation problem occurs two using parallel optical axis multispectral camera when rear end carries out image co-registration
Channel or the unmatched problem of multiple channel images can significantly influence back-end image fusion if optical axis deviation is excessive
Effect, and the center of BEAM SQUINT rear end camera lens can bring later image to be registrated insurmountable distortion and the curvature of field.Even if light
Axis deviation is smaller, can also increase the difficulty of back-end image processing, influence the visual field size of final image.It needs as can be seen from the above
It wants specific calibrating installation to calibrate the optical axis of front end optical path, preferably facilitates later image fusion registration.
Utility model content
The utility model provides a kind of common optical axis calibrator of multispectral camera, to solve multispectral camera using altogether
When optical axis designs, optical axis can not effectively realize the case where being precisely arranged in parallel, and proposition carries out accurate school by the way of scale target
Quasi- method, with realize multispectral camera parallel optical axis optical path it is accurate parallel.
In order to achieve the above objectives, the utility model provides the following technical solutions:
A kind of common optical axis calibrator of multispectral camera, including laser generator, optical lens, the first test scale
Target, the second test scale target and spectroscope；
The laser generator, the optical lens and the second test scale target are point-blank；
The optical lens is set between the laser generator and the second test scale target；
The spectroscope is equipped between the laser generator and the optical lens；
The laser that the laser generator issues is irradiated at a certain angle on the spectroscope, and the spectroscope will be described
On laser reflection to the first test scale target.
Optionally, the common optical axis calibrator further includes reflecting mirror；The reflecting mirror is located at the spectroscope and described
Between first test scale target, the reflecting mirror will come from optical lens described in the vertical directive of spectroscopical reflected light.
Optionally, the optical lens is concave-convex lens, for what will be reflected from the spectroscope and the reflecting mirror
Directional light converges to same focal position.
Optionally, horizontal direction and vertical is respectively equipped on the first test scale target and the second test scale target
The scale in direction.
Optionally, it is between 0 degree to 90 degree that the spectroscope and the laser generator, which issue the angle of laser,.
As seen through the above technical solutions, specific calibrating installation calibrates the optical axis of front end optical path, preferably side
Phase image co-registration is registrated after an action of the bowels.
Detailed description of the invention
It, below will be to attached drawing needed in the embodiment in order to illustrate more clearly of the technical solution of the utility model
It is briefly described, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of embodiments herein；
Fig. 2 is the pitch deviation angle [alpha] of the application1And horizontal departure angle α2Structural schematic diagram；
Fig. 3 is the structural schematic diagram of the size of the device of the application；
Fig. 4 is the structural schematic diagram of the imaging point of the device of the application；
Fig. 5 is the structural schematic diagram of the optical path of the application；
Fig. 6 is the flow chart that the multispectral common optical axis of the application tunes up；
Fig. 7 is the flow chart that the spectroscope of the application tunes up；
Fig. 8 is that the calculating spectroscopical first of the application adjusts the flow chart of angle；
Fig. 9 is the flow chart of the application tuned up to reflecting mirror；
Figure 10 is that the calculating spectroscopical second of the application adjusts the flow chart of angle.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Multispectral camera can be divided into three categories: first is more lens type multispectral cameras.It has 4-9 camera lens,
Each camera lens respectively has an optical filter, and a kind of light of relatively narrow spectrum is allowed to pass through respectively, and a plurality of lenses shoot same scenery simultaneously, uses
One film records the image information of several different bands simultaneously.Second is multiphase type multispectral camera.It is by several
Together, each camera is respectively provided with different optical filters to platform camera combination, on the different bands for receiving scenery respectively
Information, while shooting same scenery, respectively obtain the film of a set of special spectrum band.Third is the photograph of light beam isolated multispectrum
Machine.It uses a camera lens photographed, and the light from scenery is separated into several wave bands with multiple prism scene devices
Light beam is respectively got off the optical information recording of each wave band with more set films.In these three multispectral cameras, light beam divergence type shines
The advantages of camera is that structure is simple, and image overlapping accuracy is high, but image quality is poor；More camera lenses and multiphase type camera are also difficult quasi-
It really is directed at same direction, overlapping accuracy is high, and image quality is poor, meanwhile, the processing time of overlapping is longer.
As shown in Figure 1, a kind of common optical axis calibrator of multispectral camera, including laser generator 1, optical lens 2,
One test scale target 3, second tests scale target 4, spectroscope 5 and reflecting mirror 6.Wherein, laser generator mainly provides thin collimation
Laser；First test scale target 3 and the second test scale target 4 are as the foundation tuned up；Optical lens 2 is for converging directional light
To focal position.
The laser generator 1, the optical lens 2 and the second test scale target 4 are point-blank；
The optical lens 2 is set between the laser generator 1 and the second test scale target 4；
The spectroscope 5 is equipped between the laser generator 1 and the optical lens 2；
The laser that the laser generator 1 issues is irradiated at a certain angle on the spectroscope 5, is re-reflected into described the
On one test scale target 3.
Optionally, the common optical axis calibrator further includes reflecting mirror 6, the reflecting mirror 6 be located at the spectroscope 5 and
Between the first test scale target 3, the reflecting mirror 6 is by optics described in the vertical directive of reflected light from the spectroscope 5
Lens 2；
Optionally, the optical lens 2 is concave-convex lens, flat by reflecting from the spectroscope 5 and the reflecting mirror 6
Row light converges to same focal position.
Optionally, the first test scale target 3 and the second test scale target 4 are equipped with horizontally and vertically above
Scale.
Optionally, it is between 0 degree to 90 degree that the spectroscope 5 and the laser generator, which issue the angle of laser,.
Based on above-mentioned multispectral common optical axis calibrator, the utility model in actual use, such as Fig. 2, Fig. 3, Fig. 4 and
Shown in Fig. 6, multispectral common optical axis is completed by following steps and is tuned up.
S1: spectroscope is tuned up；
S2: reflecting mirror is tuned up.
As shown in fig. 7, the step S1: carrying out tune-up to spectroscope includes:
S11: opening laser generator, reaches laser on the first test scale target by spectroscope reflection；
S12: the first information that laser is located on the first test scale target is obtained, is calculated and is divided according to the first information
The first of light microscopic adjusts angle.
Wherein, the first information includes vertical phase gap of the laser dot apart from the first test scale pinwheel point
From d1, level difference distance d2；The first adjusting angle includes pitch angle β1With level angle β2；
As shown in Figure 8, wherein described that spectroscopical first adjusting angle is calculated according to the first information in step S12
Include:
S121: according to vertical difference distance d1, level difference distance d2Calculate the pitch deviation that the beam splitter optical axis generates
Angle [alpha]1And horizontal departure angle α2:
Wherein, D is the spectroscope at a distance from the first test scale target；
As shown in figure 5, passing through reflection law, it is known that incidence angle and angle of reflection are equal, if the incident angle of ideal mirror is
X, then
X+ β=X- β+α
So
S122: according to the pitch deviation angle [alpha]1With the horizontal departure angle α2Obtain the pitch angle β1And institute
State level angle β2, then
After having adjusted spectroscope 5, it is put into reflecting mirror 6, continues to tune up reflecting mirror 6；Specifically, as shown in figure 9,
Step S2 can resolve into the following steps:
S21: opening laser generator 1, and a part of laser is made to reach reflecting mirror by spectroscope reflection, laser it is another
Part is transmitted through optical lens through spectroscope.
S22: adjusting reflecting mirror, and the laser for reaching reflecting mirror is made to reflect vertical directive optical lens through reflecting mirror.
S23: the directional light reflected from spectroscope transmission and reflecting mirror is converged to the second test scale target by optical lens
On.
S24: the second information that laser is located on the second test scale target is obtained, is calculated according to second information anti-
The second of light microscopic adjusts angle.
Wherein, second information includes vertical phase gap of the laser dot apart from the second test scale pinwheel point
From d3, level difference distance d4；The second adjusting angle includes pitch angle β3With level angle β4；
As shown in Figure 10, wherein described that spectroscopical second adjusting angle is calculated according to second information in step S24
Degree includes:
S241: according to vertical difference distance d3, level difference distance d4Calculate the pitch deviation that the beam splitter optical axis generates
Angle [alpha]3, horizontal departure angle α4:
Wherein, F is the focal length of the optical lens；
S242: according to the pitch deviation angle [alpha]3And the horizontal departure angle α4Obtain the pitch angle β3And institute
State level angle β4, then
This application provides a kind of common optical axis calibrator of multispectral camera, calibrator includes laser generator, light
Learn lens, the first test scale target, the second test scale target, spectroscope and reflecting mirror.Wherein, laser generator mainly provides carefully
Collimated laser beam；First test scale target and the second test scale target are as the foundation tuned up；Optical lens is used for directional light
Converge to focal position.When tune-up, taking-up reflecting mirror, the adjustment each regulator site of spectroscope go out laser transmitter projects first
Laser beam first test scale target center；After having adjusted spectroscope, it is inserted into reflecting mirror, adjusts each tune of reflecting mirror
The laser beam that section position goes out laser transmitter projects is in the center of the second scale test target.Specific calibrating installation is to front end
The optical axis of optical path is calibrated, and later image fusion registration is preferably facilitated.
Those skilled in the art are considering specification and after practicing utility model disclosed herein, will readily occur to practical
Novel other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are pointed out by the attached claims.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
Claims (5)
1. a kind of common optical axis calibrator of multispectral camera, it is characterised in that: including laser generator (1), optical lens
(2), the first test scale target (3), the second test scale target (4) and spectroscope (5)；
The laser generator (1), the optical lens (2) and second test scale target (4) are point-blank；
The optical lens (2) is set between the laser generator (1) and second test scale target (4)；
The spectroscope (5) are equipped between the laser generator (1) and the optical lens (2)；
The laser that the laser generator (1) issues is irradiated at a certain angle on the spectroscope (5), the spectroscope (5)
It will be on the laser reflection to first test scale target (3).
2. a kind of common optical axis calibrator of multispectral camera according to claim 1, it is characterised in that: the common optical axis
Calibrator further includes reflecting mirror (6)；The reflecting mirror (6) is located at the spectroscope (5) and first test scale target (3)
Between；The reflecting mirror (6) will come from optical lens (2) described in the vertical directive of reflected light of the spectroscope (5).
3. a kind of common optical axis calibrator of multispectral camera according to claim 2, it is characterised in that: the optical lens
Mirror (2) is concave-convex lens, same for converging to the directional light reflected from the spectroscope (5) and the reflecting mirror (6)
Focal position.
4. a kind of common optical axis calibrator of multispectral camera according to claim 2, it is characterised in that: described first surveys
Scale horizontally and vertically is respectively equipped in examination scale target (3) and second test scale target (4).
5. a kind of common optical axis calibrator of multispectral camera according to claim 1, it is characterised in that: the spectroscope
(5) and the angle of the laser generator (1) sending laser is between 0 degree to 90 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920415886.4U CN209589428U (en) | 2019-03-29 | 2019-03-29 | A kind of common optical axis calibrator of multispectral camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799079A (en) * | 2019-03-29 | 2019-05-24 | 云南电网有限责任公司电力科学研究院 | A kind of the common optical axis calibrator and method of multispectral camera |
| CN117830392A (en) * | 2024-03-05 | 2024-04-05 | 季华实验室 | Environmental object identification method and imaging system |
-
2019
- 2019-03-29 CN CN201920415886.4U patent/CN209589428U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799079A (en) * | 2019-03-29 | 2019-05-24 | 云南电网有限责任公司电力科学研究院 | A kind of the common optical axis calibrator and method of multispectral camera |
| CN109799079B (en) * | 2019-03-29 | 2024-04-09 | 云南电网有限责任公司电力科学研究院 | Common optical axis adjustment device and method for multispectral camera |
| CN117830392A (en) * | 2024-03-05 | 2024-04-05 | 季华实验室 | Environmental object identification method and imaging system |
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