CN207751589U - Polarized light composes camera - Google Patents
Polarized light composes camera Download PDFInfo
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- CN207751589U CN207751589U CN201820015441.2U CN201820015441U CN207751589U CN 207751589 U CN207751589 U CN 207751589U CN 201820015441 U CN201820015441 U CN 201820015441U CN 207751589 U CN207751589 U CN 207751589U
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- liquid crystal
- polarized light
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- lens
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 70
- 230000010287 polarization Effects 0.000 claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 21
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000711 polarimetry Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model provides a kind of polarized light spectrum camera, including：Telephoto lens, liquid crystal wave plate controller and computer, it is provided with biconcave lens at the rear focus of telephoto lens, it is disposed with liquid crystal polarized controller, liquid crystal phase retardation device, optical nodes frame, liquid crystal tunable filter, convex lens and CCD in the image space of biconcave lens, CCD is located at the rear focus of convex lens, and the image space focal plane of telephoto lens is made to be placed at CCD.It is not interfered by external light source using the utility model, additionally it is possible to simulate the test of CCD/CMOS under natural light.It is combined with spectrum camera using above-mentioned the utility model by camera is polarized, it has many advantages, such as that no mechanical moving element, service band are wide, precision is fast at high speed, can obtain full measuring polarization state, acquire abundant information, especially to detecting and identifying that the field of things concealed has more advantage and potentiality.
Description
Technical field
The utility model is related to camera technique fields, more specifically, are related to a kind of polarized light spectrum camera.
Background technology
Imaging spectral technology and polarization technology are two kinds of important technological means in polarization spectrum imaging application, natural lighting
It penetrates on target object surface, body surface can will produce the optical property determined by own through reflection, transmission, scattering and radiation
And characteristic polarization, using spectral technique and polarization technology respectively by information such as aware space, intensity, spectrum and polarizations to mesh
It marks attribute and carries out profound judgement, the physico-chemical attributes of inverting target obtain the target surface of high contrast, pattern, shade and thick
The information such as rugosity, achieve the purpose that detection identification, capture common intensity detection method capture less than hidden information, can also basis
The parametric inversions such as the degree of polarization measured and the angle of polarization go out the information such as the size, refractive index and concentration distribution of Scattering Targets.Due to certainly
The diversity and complexity of object generally require to provide more physics and chemistry in the acquisition spectral information and polarization information in right boundary
Performance data more acurrate, more specific could be analyzed and identify object, and then need to take certain investigative technique means.
The spectrum camera to grow up in recent years is collection optics, electronics, precision machinery, computer, letter with polarization camera
Number treatment technology is in the photoelectric sensor of one.Polarization spectrum camera is then theoretical based on the two, realizes spectral measurement and polarization
It measures in the novel remote sensor of one, in the continuous development of investigative technique and the constantly bringing forth new ideas of application, polarization spectrum camera
Combination make to take the information content of target to be enriched, combine the effect that the requirement on devices difference of polarization spectrum camera is finally realized
Fruit can also be limited by condition, and to the rare report of the research of polarization spectrum camera, only a few studies mechanism is carrying out for the country
Research, the unit of foreign study are concentrated mainly on some militaries such as the U.S., Japan and university and explore and apply for experimental principle
Assessment etc., the technical solution mainly taken are based on acousto-optic tunable filter, polarization grating, liquid crystal tunable optical filter etc.
Imaging polarization spectrometer etc..Just at present from the point of view of development, polarimetry at home or a brand-new field, from current research
From the point of view of achievement, most of instrument service band is relatively narrow, and channel is less, cannot accomplish full measuring polarization state.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of polarized light spectrum camera, existing to solve
Polarization spectrum camera real-time control high-acruracy survey and can not can not accomplish that full measuring polarization state obtains the more rich polarised light of target
The problem of spectrum information.
Polarized light provided by the utility model composes camera, including：Telephoto lens, liquid crystal wave plate controller and calculating
Machine is provided with biconcave lens at the rear focus of telephoto lens, and liquid crystal polarized control is disposed in the image space of biconcave lens
Device processed, liquid crystal phase retardation device, optical nodes frame, liquid crystal tunable filter, convex lens and CCD, CCD are located at the picture of convex lens
Square focal point makes the image space focal plane of telephoto lens be placed at CCD；Liquid crystal polarized controller is used to pass through oneself of biconcave lens
Right light becomes linearly polarized light；Liquid crystal phase retardation device is used to linearly polarized light becoming elliptically polarized light；Computer and liquid crystal wave plate
Controller connects, for sending first voltage control signal and second voltage control signal to liquid crystal wave plate controller；Liquid crystal wave
Piece controller is connect with the liquid crystal polarized controller, and liquid crystal polarized controller is controlled for controlling signal according to first voltage
Voltage limit and lower voltage limit change the polarization direction of linearly polarized light；Liquid crystal wave plate controller is also connect with liquid crystal phase retardation device,
For controlling the upper limit voltage and lower voltage limit that signal controls liquid crystal phase retardation device according to second voltage, to change liquid crystal phase
The phase-delay quantity of delayer modulates the polarization state of linearly polarized light；Liquid crystal tunable filter is used for visible light wave range or red
Wave section optical signal carries out selective transmission.
Furthermore it is preferred that structure be, polarized light spectrum camera further include analog-digital converter, digital signal processor and deposit
The electric signal of reservoir, CCD conversions is converted to digital signal by analog-digital converter processing, and is stored in memory.
Compared with prior art, polarized light spectrum camera provided by the utility model will polarize camera and spectrum camera phase
In conjunction with no mechanical moving element, service band is wide, precision is fast at high speed, can obtain full measuring polarization state, acquisition information
The advantages that abundant, especially to detecting and identifying that the field of things concealed has more advantage and potentiality.
Description of the drawings
By reference to the explanation below in conjunction with attached drawing, and with the utility model is more fully understood, this practicality is new
The other purposes and result of type will be more clearly understood and understood.In the accompanying drawings：
Fig. 1 is the overall structure diagram that camera is composed according to the polarized light of the utility model embodiment.
Reference numeral therein includes：1- telephoto lenses, 2- biconcave lens, 3- liquid crystal wave plates controller, 4- are liquid crystal polarized
Controller, 5- liquid crystal phase retardations device, 6- nodes frame, 7- liquid crystal tunable filters, 8- convex lenses；9-CCD；10- liquid crystal waves
Piece controller power source；11-CCD power supplys, computer 12.
Specific implementation mode
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
In other examples, one or more embodiments for ease of description, well known structure and equipment are shown in block form an.
Spectrum camera is combined by polarized light spectrum camera provided by the utility model with polarization camera, can obtain tradition
The three-dimensional information amount taken is extended to 7 degree of freedom, and then there is the utility model far and near distance to shoot flexibly controllably, without machine driving, tuning
Precision is fast at high speed, service band is wide, transmitance is high, it is low in energy consumption, can be realized to the high-precision polarization of atural object by single focal plane
Spectrographic detection and the advantage for accomplishing full measuring polarization state.To detect and identifying that low contrast and potential target information provide real-time essence
The new tool really controlled.
Fig. 1 shows the overall structure that camera is composed according to the polarized light of the utility model embodiment.
As shown in Figure 1, the polarized light that the utility model embodiment provides composes camera, including：Telephoto lens 1, liquid crystal
Wave plate controller 3 and computer 12 set to extend the image space focal plane of telephoto lens 1 at the rear focus of telephoto lens 1
It is equipped with biconcave lens 2, in order to extend the image space focal plane of telephoto lens 1 again, the image space of biconcave lens 2 is provided with optics section
Point frame 6, for adjusting imaging size, between biconcave lens 2 and optical nodes frame 6, from biconcave lens 2 to optical nodes frame 6
Direction is disposed with liquid crystal polarized controller 4 and liquid crystal phase retardation device 5, is disposed at the rear of optical nodes frame 6
Liquid crystal tunable filter 7 and convex lens 8, CCD9 is provided at the rear focus of convex lens 8, makes the location of CCD9 just
It is located at the position of the image space focal plane of telephoto lens 1 well, CCD9 is used to receive the optical signal of the convergence of convex lens 8, and is converted into electricity
Signal.
Natural light can be become linearly polarized light by liquid crystal polarized controller 4, and relevant voltage corresponds in liquid crystal polarized controller 4
Single polarization direction can be changed the linear polarization of incident light, become desired by changing upper limit voltage and lower voltage limit
Linear polarization.
Liquid crystal phase retardation device 5 is liquid crystal wave plate, and voltage modulation amplitudes are 0~10V, are accurate to 1mV, change liquid crystal wave
The upper limit voltage and lower voltage limit of piece control liquid crystal birefringence coefficient, can accurately control light beam in real time and pass through the fast of liquid crystal wave plate
Former linearly polarized light can be become desired elliptically polarized light, in liquid crystal phase retardation device, pass through tune by the phase difference of axis and slow axis
Specific voltage is saved to obtain specific polarization state.
Computer 12 is connect with liquid crystal wave plate controller 3, for sending first voltage control letter to liquid crystal wave plate controller 3
Number and second voltage control signal, liquid crystal wave plate controller 3 connect with liquid crystal polarized controller 4, liquid crystal wave plate controller 3
The upper limit voltage and lower voltage limit that liquid crystal polarized controller 4 is controlled according to first voltage control signal, to change the line of incident light
Polarization state becomes desired linear polarization.
Liquid crystal wave plate controller 3 is connect with liquid crystal phase retardation device 5, and liquid crystal wave plate controller 3 is controlled according to second voltage
Signal controls the upper limit voltage and lower voltage limit of liquid crystal phase retardation device 5, to reach the polarization state effect for changing incident light.It adopts
With liquid crystal phase retardation device, it can be achieved that can be achieved with the modulation to the polarization state of light by voltage control, without mechanical rotating dress
Set, tuning precision is fast at high speed, service band is wide, transmitance is high, it is low in energy consumption, can be to realization of goal height by single focal plane imaging
The real-time polarization of precision measures.
Liquid crystal tunable filter 7 is used as light-splitting device, can pass through electricity through the optical wavelength of liquid crystal tunable filter 7
Subsignal controls, can quick and visible or near infrared spectrum the arbitrary wavelength of vibrationless selection, there is service band
The interior arbitrary wavelength ability of electric tuning has the characteristics that linear polarizer simultaneously, to reach the light splitting for accurately controlling output and it is expected wavelength
Effect and achieve the effect that obtain full measuring polarization state.The utility model may be implemented under specific polarization effect in this way, can obtain
Spectrum picture under arbitrary wavelength, can also obtain the polarization image under different polarization effect under arbitrary wavelength.
Polarized light spectrum camera provided by the utility model further includes liquid crystal wave plate controller power source 10, CCD power supplys
11, analog-digital converter, digital signal processor and memory, liquid crystal wave plate controller power source 10 are used to control to liquid crystal wave plate
Device 3 is powered, and CCD power supplys 11 are used to power to CCD9, and CCD turns after converting optical signals into electric signal by analog-digital converter processing
It is changed to digital signal, and is stored in memory, is then exported, is utilized with digital signal or mode video signal according to different needs
Type is monochromatic progressive scan CCD9, and frame per second reaches 20fps.
In order to eliminate the interference of stray light, polarized light provided by the utility model spectrum camera is placed in magazine, is made
Image clearly is as it can be seen that each section is stationary state in entire light path system, and only telephoto lens 1 is replaceable, experiment distance by
Telephoto lens 1 determines, therefore the utility model is flexibly controllable to testing required any distance, is suitble to various distance shooting imagings.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described with power
Subject to the protection domain that profit requires.
Claims (2)
1. a kind of polarized light composes camera, which is characterized in that including：Telephoto lens, liquid crystal wave plate controller and computer,
It is provided with biconcave lens at the rear focus of the telephoto lens, is disposed in the image space of the biconcave lens liquid crystal polarized
Controller, liquid crystal phase retardation device, optical nodes frame, liquid crystal tunable filter, convex lens and CCD, the CCD are located at described
At the rear focus of convex lens, the image space focal plane of the telephoto lens is made to be placed at the CCD；
Natural light of the liquid crystal polarized controller for that will pass through the biconcave lens becomes linearly polarized light；
The liquid crystal phase retardation device is used to the linearly polarized light becoming elliptically polarized light；
The computer is connect with the liquid crystal wave plate controller, for sending first voltage control to the liquid crystal wave plate controller
Signal processed and second voltage control signal；
The liquid crystal wave plate controller is connect with the liquid crystal polarized controller, for controlling signal control according to the first voltage
The liquid crystal polarized controller upper limit voltage and lower voltage limit are made, the polarization direction of the linearly polarized light is changed；
The liquid crystal wave plate controller is also connect with the liquid crystal phase retardation device, for controlling signal according to the second voltage
The upper limit voltage and lower voltage limit for controlling the liquid crystal phase retardation device, to change the phase delay of the liquid crystal phase retardation device
Amount, modulates the polarization state of the linearly polarized light；
The liquid crystal tunable filter is used to carry out selective transmission to visible light wave range or infrared band optical signal.
2. polarized light as described in claim 1 composes camera, which is characterized in that further include analog-digital converter, digital signal
The electric signal of processor and memory, the CCD conversions is converted to digital signal by analog-digital converter processing, and is stored in
The memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820015441.2U CN207751589U (en) | 2018-01-05 | 2018-01-05 | Polarized light composes camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820015441.2U CN207751589U (en) | 2018-01-05 | 2018-01-05 | Polarized light composes camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207751589U true CN207751589U (en) | 2018-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820015441.2U Withdrawn - After Issue CN207751589U (en) | 2018-01-05 | 2018-01-05 | Polarized light composes camera |
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| Country | Link |
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| CN (1) | CN207751589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110751047A (en) * | 2019-09-20 | 2020-02-04 | 维沃移动通信有限公司 | Fingerprint identification module and electronic equipment |
-
2018
- 2018-01-05 CN CN201820015441.2U patent/CN207751589U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110751047A (en) * | 2019-09-20 | 2020-02-04 | 维沃移动通信有限公司 | Fingerprint identification module and electronic equipment |
| US11798313B2 (en) | 2019-09-20 | 2023-10-24 | Vivo Mobile Communication Co., Ltd | Fingerprint identification module and electronic device |
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Granted publication date: 20180821 Effective date of abandoning: 20240405 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180821 Effective date of abandoning: 20240405 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |