CN207515908U - A kind of multi-pass self calibration polarization detecting device and system - Google Patents
A kind of multi-pass self calibration polarization detecting device and system Download PDFInfo
- Publication number
- CN207515908U CN207515908U CN201721741929.5U CN201721741929U CN207515908U CN 207515908 U CN207515908 U CN 207515908U CN 201721741929 U CN201721741929 U CN 201721741929U CN 207515908 U CN207515908 U CN 207515908U
- Authority
- CN
- China
- Prior art keywords
- light
- calibration
- light source
- detecting device
- photodetector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of multi-pass self calibration polarization detecting devices, wherein, including at least three light paths and a data power board, every light path at least three light paths includes imaging optical path and calibration light path, imaging optical path includes object lens, photodetector and polarizer, the setting of the angle of polarizer at least three light paths differs, photodetector in every light path is connect with data exchange plate, calibration light path is arranged on the side of the object lens in same light path, calibration light path includes light source and the calibration plate set gradually according to light source incidence direction, lens and reflecting element, light source can pass sequentially through the calibration plate, enter the object lens of place light path after lens and reflecting element.The invention also discloses a kind of multi-pass self calibration Polarization Detection systems.Multi-pass self calibration polarization detecting device provided by the utility model improves the measurement accuracy of target polarization radiation characteristic.
Description
Technical field
The utility model is related to Polarization Detection technical field more particularly to a kind of multi-pass self calibration polarization detecting device and
Multi-pass self calibration Polarization Detection system including the multi-pass self calibration polarization detecting device.
Background technology
Polarization is the inherent characteristic of light, and Polarization Detection is available information from traditional three dimensions（Light intensity, spectrum and sky
Between）Expand to the septuple space（Light intensity, spectrum, space, degree of polarization, polarization azimuth, polarization ellipse degree and polarization rotation direction）, so as to
More medium physics and optical parameter can be obtained, help to improve target contrast, reduce interference of stray light, target from
It is separated in complex background.Polarization Detection system components are on hardware parameter and actual value is there are deviation, and each electricity
Lotus coupled device image sensor（CCD）Between response there are nonuniformities.Directly Polarization Detection is carried out using detection system
Larger error, even wrong polarization information can be brought.In order to ensure the measurement accuracy of target polarization radiation characteristic, more preferably
Apply Polarization Detection technology, need to demarcate Polarization Detection system.
Polarization Detection system calibration method common at present mostly first determines scaling parameter, and captured in real-time picture is according to existing
Parameter is corrected.But the scaling parameter of system is simultaneously not fixed, and measure still has different in real time with experiment value.
Therefore, how to improve the measurement accuracy of target polarization radiation characteristic becomes those skilled in the art's skill urgently to be resolved hurrily
Art problem.
Invention content
The utility model is intended at least solve one of technical problem in the prior art, provides a kind of multi-pass and makes by oneself
Polarization detecting device and the multi-pass self calibration Polarization Detection system including the multi-pass self calibration polarization detecting device are marked, with solution
Certainly the problems of the prior art.
As the first aspect of the utility model, a kind of multi-pass self calibration polarization detecting device is provided, wherein, it is described
Multi-pass self calibration polarization detecting device includes at least three light paths and a data power board, every at least three light paths
Light path includes imaging optical path and calibration light path,
The imaging optical path includes object lens, photodetector and polarizer, the polarizer, object lens and photodetection
Device is set gradually, and the setting of the angle of the polarizer at least three light paths differs, and the photoelectricity in every light path is visited
It surveys device to connect with the data exchange plate, Target Photo can pass sequentially through the polarizer in every light path and described
Object lens form target image on the photodetector, and the data exchange plate can be by the target on each photodetector
Image transmitting to image processing apparatus,
The calibration light path is arranged on the side of object lens in same light path, the calibration light path include light source and
Calibration plate, lens and the reflecting element set gradually according to light source incidence direction, the light source can pass sequentially through the calibration
After plate, lens and reflecting element enter place light path object lens, and after by the object lens on the photodetector shape
Into light source image, the light source image on each photodetector can be transmitted to image processing apparatus by the data exchange plate.
Preferably, the multi-pass self calibration polarization detecting device includes three light paths, and the polarization member in three light paths
The setting of the angle of part differs.
Preferably, the setting of the angle of the polarizer in three light paths is respectively 0 °, 60 ° and 120 °.
Preferably, the photodetector in every light path includes target area and calibration area, the target image position
In the target area, the light source image is located at the calibration area.
Preferably, the imaging optical path further includes diaphragm, and the diaphragm is arranged on the polarizer away from the object lens
Side, the diaphragm can stop that the target image that the light source is formed enters the target area.
Preferably, the calibration plate in every light path includes first area, second area and third region, and described the
One region and the second area are both provided with optical attenuator component, and the attenuation coefficient of the optical attenuator component of the first area with
The attenuation coefficient of the optical attenuator component of the second area is different.
Preferably, each light source image includes the different region of three kinds of brightness.
It preferably, can according to the attenuation coefficient of the illumination of light source and each region of the calibration plate in every light path
The light source is obtained by the illumination after the calibration plate, the illumination of the light source can measure to obtain by standard detection instrument.
Preferably, each light source includes the uniform stabilized light source that shines.
As the second aspect of the utility model, a kind of multi-pass self calibration Polarization Detection system is provided, wherein, it is described
Multi-pass self calibration Polarization Detection system includes image processing apparatus and previously described multi-pass self calibration polarization detecting device,
Data exchange plate in the multi-pass self calibration polarization detecting device is communicated to connect with described image processing unit, the data
The target image and light source image formed on each photodetector in three light paths can be transmitted to the figure by power board
As processing unit, described image processing unit can show the target image and light source image in three light paths, and can read
Gray value in each target image.
Multi-pass self calibration polarization detecting device provided by the utility model calibrates light path by setting, can pass through light
Source irradiates the light source image to be formed and obtains the curve of illumination and gray scale, then obtains the illumination of target image according to the curve, real
Show real-time calibration, reduced the requirement to photodetector, improve the measurement accuracy of photodetector.
Description of the drawings
Attached drawing is to be used to provide a further understanding of the present invention, and a part for constitution instruction, and following
Specific embodiment together for explaining the utility model, but do not form the limitation to the utility model.In the accompanying drawings：
Fig. 1 is the structure diagram of multi-pass self calibration polarization detecting device provided by the utility model.
Fig. 2 is the region division schematic diagram of calibration plate provided by the utility model.
Fig. 3 is the structure diagram of multi-pass self calibration Polarization Detection system provided by the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
As the first aspect of the utility model, a kind of multi-pass self calibration polarization detecting device is provided, wherein, such as scheme
Shown in 1, the multi-pass self calibration polarization detecting device 100 includes at least three light paths 10 and a data power board 4, at least
Every light path 10 in three light paths includes imaging optical path and calibration light path,
The imaging optical path includes object lens 1, photodetector 2 and polarizer 3, the polarizer 3, object lens 1 and light
Electric explorer 2 is set gradually, and the setting of the angle of the polarizer 3 at least three light paths 10 differs, every light path
Photodetector 2 in 10 is connect with the data exchange plate 4, and Target Photo can pass sequentially through the institute in every light path 10
It states polarizer 3 and the object lens 1 and forms target image on the photodetector 2, the data exchange plate 4 can will be every
Target image on a photodetector 2 is transmitted to image processing apparatus,
The calibration light path is arranged on the side of the object lens 1 in same light path, and the calibration light path includes light source 5
With calibration plate 6, lens 7 and the reflecting element 8 set gradually according to 5 incident direction of light source, the light source 5 can pass sequentially through institute
The object lens 1 for entering place light path after calibration plate 6, lens 7 and reflecting element 8 are stated, and in the photoelectricity after by the object lens 1
Light source image is formed on detector 2, the light source image on each photodetector 2 can be transmitted to by the data exchange plate 4
Image processing apparatus.
Multi-pass self calibration polarization detecting device provided by the utility model calibrates light path by setting, can pass through light
Source irradiates the light source image to be formed and obtains the curve of illumination and gray scale, then obtains the illumination of target image according to the curve, real
Show real-time calibration, reduced the requirement to photodetector, improve the measurement accuracy of photodetector.
It is understood that when the multi-pass self calibration polarization detecting device includes a plurality of light path, at least three
Every light path in light path 10 includes imaging optical path and calibration light path, and other light paths can include natural light or mostly light
Spectrum, if for example, the multi-pass self-calibration polarization detecting device include four light paths, have three light paths include imaging optical path and
Light path is calibrated, and a light path can be either multispectral including natural light.
As a kind of specifically embodiment, the multi-pass self calibration polarization detecting device includes three light paths 10, and
The setting of the angle of polarizer in three light paths 10 differs.
Further specifically, the setting of the angle of the polarizer in three light paths is respectively 0 °, 60 ° and 120 °.
It is to be appreciated that the angle of the polarizer of first light path of three light paths is set as 0 °, Article 2 light path
The angle of polarizer is set as 60 °, and the angle of the polarizer of Article 3 light path is set as 120 °, different by these three
Polarizer angle can realize the calculating of degree of polarization.
Specifically, it is described in every light path in order to distinguish the image that the image of light source formation and Target Photo are formed
Photodetector 2 includes target area and calibration area, and the target image is located at the target area, and the light source image is located at institute
State calibration area.
It is understood that imaging is divided into two regions on the photodetector 2：Target area and calibration area.Foreign objects
Body is imaged on target area, and included known uniform-illumination light source 5 is imaged on calibration area, to real-time calibration, and target area and calibration
Area does not interfere with each other.
Specifically, as shown in Figure 1, in order to distinguish target image and light source image, the imaging optical path further includes diaphragm 9,
The diaphragm 9 is arranged on the side that the polarizer 3 deviates from the object lens 1, and the diaphragm 9 can stop that the light source is formed
The target image enter the target area.
Specifically, as shown in Fig. 2, in order to obtain the relationship of the illumination of light source image and gray value, the institute in every light path
It states calibration plate 6 and includes first area a, second area b and third region c, the first area a and the second area b are equal
It is provided with optical attenuator component, and the optical attenuation of the attenuation coefficient of the optical attenuator component of the first area a and the second area b
The attenuation coefficient of element is different.
It is understood that calibration area's automatic light source, by calibration plate 6, calibration plate 6 is divided for 3 regions a, b, c, the
The optical attenuator component of differential declines coefficient is provided in one region a and second area b, optical attenuation is not provided in the c of third region
Element.Light source 5 is reflected into object lens by lens 7 by calibration plate 6 through reflecting element 8, is imaged on photodetector 2.Light
Source can determine by tri- area's illumination of a, b, c after calibration plate 6, after carrying polarizer object lens three area's light intensity have different and
It is not 0.
Preferably, each light source image includes the different region of three kinds of brightness.
It is understood that include three regions, and trizonal attenuation coefficient is different due to determining tabula rasa 6（Third
It is 0 that region c, which can be understood as attenuation coefficient,）, therefore light source 5 is also included by the light source image for determining to be formed after tabula rasa 6
The region of three kinds of brightness.
It specifically, can according to the attenuation coefficient of the illumination of light source and each region of the calibration plate in every light path
The light source is obtained by the illumination after the calibration plate, the illumination of the light source can measure to obtain by standard detection instrument.
Preferably, each light source 5 includes the uniform stabilized light source that shines.
It should be noted that the light source 5 is the uniform stabilized light source that shines, imaging area is smaller, to photodetector
Time for exposure variation influence it is little.
As shown in Figure 1, target focuses on the imaging target surface of photodetector 2 by polarizer 3 and object lens 1, light is generated
Electrical effect, digital signal are transmitted to image processing apparatus by data exchange plate 4, and three light paths are imaged and preserve simultaneously in screen
For picture；The light that light source 5 is sent out passes through calibration plate 6, lens 7, reflecting element 8, finally with target imaging in same width picture,
Calibration area is imaged in, is the uniform region of three Block Brightness, interregional brightness is different.The illumination E of light source 50It declines with 6 each area of calibration plate
Subtract coefficient AiIt is known that can acquire light source passes through illumination E after calibration plate 6i= Ai* E0.According to calibration area gray value GiExtrapolate gray scale
The E-G curves of value and illumination, then can extrapolate object illumination according to the gray value of target in picture.Wherein, built-in light source
Illumination degree can pass through standard detection Instrument measuring in advance.
The utility model obtains the illumination of light source image and the curved line relation of gray value by the light source image that light source is formed,
Because be same illumination detector, the illumination of light source image and the curved line relation of gray value and the illumination of target image with
The curved line relation of gray value is identical, and the gray value of target image can be read out in image processing apparatus, so root
The brightness value of target image can be obtained according to the illumination of light source image and the curved line relation of gray value.
As the second aspect of the utility model, a kind of multi-pass self calibration Polarization Detection system is provided, wherein, such as scheme
Shown in 3, the multi-pass self calibration Polarization Detection system 200 includes image processing apparatus 110 and previously described multi-pass certainly
Calibrate polarization detecting device 100, the data exchange plate in the multi-pass self calibration polarization detecting device 100 at described image
Reason device 110 communicates to connect, the target that the data exchange plate can will be formed on each photodetector in three light paths
Image and light source image are transmitted to described image processing unit 110, and described image processing unit 110 can be shown in three light paths
Target image and light source image, and the gray value in each target image can be read.
Multi-pass self calibration Polarization Detection system provided by the utility model, passes through multi-pass self calibration polarization detecting device
Cooperation with image processing apparatus can realize the calibration to the precision of photodetector, reduce and photodetector is wanted
It asks, improves the measurement accuracy of photodetector.
Preferably, described image processing unit 110 includes computer.
It is understood that embodiment of above is merely to illustrate that the principle of the utility model and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection domain.
Claims (10)
- A kind of 1. multi-pass self calibration polarization detecting device, which is characterized in that the multi-pass self calibration polarization detecting device packet Include at least three light paths and a data power board, every light path at least three light paths includes imaging optical path and calibration light Road,The imaging optical path include object lens, photodetector and polarizer, the polarizer, object lens and photodetector according to Secondary setting, and the setting of the angle of the polarizer at least three light paths differs, the photodetector in every light path It is connect with the data exchange plate, Target Photo can pass sequentially through the polarizer and the object lens in every light path Target image is formed on the photodetector, the data exchange plate can be by the target image on each photodetector It is transmitted to image processing apparatus,The calibration light path is arranged on the side of object lens in same light path, the calibration light path include light source and according to Calibration plate, lens and the reflecting element that light source incidence direction is set gradually, the light source can pass sequentially through the calibration plate, thoroughly Enter the object lens of place light path after mirror and reflecting element, and light source is formed on the photodetector after by the object lens Light source image on each photodetector can be transmitted to image processing apparatus by image, the data exchange plate.
- 2. multi-pass self calibration polarization detecting device according to claim 1, the multi-pass self calibration Polarization Detection dress It puts including three light paths, and the setting of the angle of the polarizer in three light paths differs.
- 3. multi-pass self calibration polarization detecting device according to claim 2, which is characterized in that the polarization in three light paths The setting of the angle of element is respectively 0 °, 60 ° and 120 °.
- 4. multi-pass self calibration polarization detecting device according to claim 2, which is characterized in that described in every light path Photodetector includes target area and calibration area, and the target image is located at the target area, and the light source image is located at institute State calibration area.
- 5. multi-pass self calibration polarization detecting device according to claim 4, which is characterized in that the imaging optical path also wraps Diaphragm is included, the diaphragm is arranged on the side that the polarizer deviates from the object lens, and the diaphragm can stop the light source The target image formed enters the target area.
- 6. multi-pass self calibration polarization detecting device according to claim 2, which is characterized in that described in every light path Calibration plate includes first area, second area and third region, and the first area and the second area are both provided with light Attenuating elements, and the attenuation of the attenuation coefficient of the optical attenuator component of the first area and the optical attenuator component of the second area Coefficient is different.
- 7. multi-pass self calibration polarization detecting device according to claim 6, which is characterized in that each light source image Include the different region of three kinds of brightness.
- 8. multi-pass self calibration polarization detecting device according to claim 6, which is characterized in that in every light path, according to After the attenuation coefficient of the illumination of light source and each region of the calibration plate can obtain the light source by the calibration plate Illumination, the illumination of the light source can measure to obtain by standard detection instrument.
- 9. multi-pass self calibration polarization detecting device as claimed in any of claims 1 to 8, which is characterized in that every A light source includes the uniform stabilized light source that shines.
- A kind of 10. multi-pass self calibration Polarization Detection system, which is characterized in that the multi-pass self calibration Polarization Detection system packet Include the multi-pass self calibration polarization detecting device described in any one, the mostly light in image processing apparatus and claim 1 to 9 Data exchange plate in the self calibration polarization detecting device of road is communicated to connect with described image processing unit, the data exchange plate energy It is enough that the target image and light source image that are formed on each photodetector in three light paths are transmitted to described image processing dress It puts, described image processing unit can show the target image and light source image in three light paths, and can read each described Gray value in target image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741929.5U CN207515908U (en) | 2017-12-13 | 2017-12-13 | A kind of multi-pass self calibration polarization detecting device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741929.5U CN207515908U (en) | 2017-12-13 | 2017-12-13 | A kind of multi-pass self calibration polarization detecting device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207515908U true CN207515908U (en) | 2018-06-19 |
Family
ID=62543957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721741929.5U Active CN207515908U (en) | 2017-12-13 | 2017-12-13 | A kind of multi-pass self calibration polarization detecting device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207515908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834570A (en) * | 2021-11-25 | 2021-12-24 | 北京航空航天大学 | Underwater polarization sensor multi-parameter optimization calibration method considering dark current |
-
2017
- 2017-12-13 CN CN201721741929.5U patent/CN207515908U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834570A (en) * | 2021-11-25 | 2021-12-24 | 北京航空航天大学 | Underwater polarization sensor multi-parameter optimization calibration method considering dark current |
| CN113834570B (en) * | 2021-11-25 | 2022-03-08 | 北京航空航天大学 | Underwater polarization sensor multi-parameter optimization calibration method considering dark current |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wujanz et al. | An intensity-based stochastic model for terrestrial laser scanners | |
| CN108780142B (en) | 3D imaging system and method | |
| US9741163B2 (en) | 3-D polarimetric imaging using a microfacet scattering model to compensate for structured scene reflections | |
| CN110146259A (en) | A kind of reflective multi-light axis consistency quantitative test of large-caliber off-axis and calibrating installation | |
| CN109813435B (en) | Static light reflection micro thermal imaging method and device and terminal equipment | |
| CN103592108A (en) | CCD chip modulation transfer function test device and method | |
| US20190072654A1 (en) | Device and method for calibrating a light propagation time camera | |
| CN102087483B (en) | Optical system for focal plane detection in projection lithography | |
| CN110609299A (en) | Three-dimensional imaging system based on TOF | |
| CN101813517B (en) | Device for measuring brightness | |
| CN109444077B (en) | Quantitative measurement system and method for refractive index field based on phase calibration | |
| WO2018222515A1 (en) | System and method of photogrammetry | |
| CN111123293A (en) | Self-calibration polarized atmospheric laser radar device and method | |
| CN115451820A (en) | Three-channel polarization information acquisition system | |
| CN207515908U (en) | A kind of multi-pass self calibration polarization detecting device and system | |
| US9516243B2 (en) | Method and system for emissivity determination | |
| CN105444702A (en) | Object flatness optical detection system | |
| CN211741577U (en) | Self-calibration polarized atmospheric laser radar device | |
| EP3663801B1 (en) | Time of flight sensor module, method, apparatus and computer program for determining distance information based on time of flight sensor data | |
| CN112034485A (en) | Reflectivity sensing with time-of-flight camera | |
| CN103512657A (en) | Device and method for detecting naked eye 3D LED screen display effects | |
| CN114235352B (en) | Relative polarization angle testing method of four-camera real-time polarization imaging system | |
| CN204330129U (en) | The brightness detection instrument of built-in light source | |
| KR102022836B1 (en) | Apparatus for measuring light, system and method thereof | |
| Kyle et al. | Compensating for the effects of refraction in photogrammetric metrology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |