CN109141643A - A kind of broadband signal light polarization composition is than measuring device and method - Google Patents
A kind of broadband signal light polarization composition is than measuring device and method Download PDFInfo
- Publication number
- CN109141643A CN109141643A CN201811141904.0A CN201811141904A CN109141643A CN 109141643 A CN109141643 A CN 109141643A CN 201811141904 A CN201811141904 A CN 201811141904A CN 109141643 A CN109141643 A CN 109141643A
- Authority
- CN
- China
- Prior art keywords
- acousto
- light
- optic
- light beam
- grade
- 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.)
- Granted
Links
- 230000010287 polarization Effects 0.000 title claims abstract description 81
- 239000000203 mixture Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 128
- 238000001228 spectrum Methods 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 230000003287 optical effect Effects 0.000 claims abstract description 27
- 238000004611 spectroscopical analysis Methods 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 12
- 230000003595 spectral effect Effects 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 206010058467 Lung neoplasm malignant Diseases 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 201000005202 lung cancer Diseases 0.000 claims description 3
- 208000020816 lung neoplasm Diseases 0.000 claims description 3
- 238000010186 staining Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 description 5
- 238000000701 chemical imaging Methods 0.000 description 3
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 2
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
- G01J4/04—Polarimeters using electric detection means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a kind of broadband signal light polarization composition than measuring device and method, it includes control host and sequentially connected white light source, front-end optical device, target object, beam collimator, Acousto-optic filtering component and spectrum detection instrument, control host is separately connected Acousto-optic filtering component and spectrum detection instrument, the continuous output beam of white light source, broadband light from white light source forms collimated light beam after front end optical device converges and collimates, collimated light beam vertical irradiation is to target object surface and transmits, the broadband signal light transmitted through target object carries the polarization information of target object, broadband signal light from target object, which converges through beam collimator and is collimated into collimated light beam, enters Acousto-optic filtering component progress Acousto-optic filtering, spectrum detection instrument, which receives Acousto-optic filtering light beam and obtains spectroscopic data, is sent into control host, it controls host and is based on light Modal data calculates the polarization composition ratio in broadband signal light at any wavelength.Stability of the present invention is good, and method is simple to operation.
Description
Technical field
The present invention relates to optical filtering technology field more particularly to a kind of broadband signal light polarization compositions than measuring device and
Method.
Background technique
In fields such as Hyper spectral Imagings, target object can be obtained simultaneously in different-waveband using acousto-optic tunable filter
Spectrum and image information are significant to the form and composition of analysis target object.For this purpose, (acousto-optic is adjustable for patent of invention
Filter) a kind of acousto-optic tunable filter based on tellurium dioxide acousto-optic crsytal has been invented, which has pushed Acousto-optic filtering skill
Application of the art in the fields such as optically filtering and Hyper spectral Imaging.In optical imagery, other than spectral information, target object
Optical polarization characteristic be also its determinant attribute, in different optical fields, the polarization state of light is also all one of important parameter.
For example, the polarization imaging of light can provide the pathological change letter that general imaging method does not provide in Biomedical Photonics
Breath；In remote sensing fields, by can effectively identify specified target object to the measurement with special polarization state light.
In optical polarization imaging, when the signal light of imaging is broadband light, if broadband light can be obtained at any wavelength
Polarization composition ratio, that is, the intensity ratio of horizontal polarization and vertical polarization composition, so that it may obtain super spectral polarization imaging knot
Fruit obtains its spectrum polarizing composition ratio while obtaining target object spectral information.This knows the polarization characteristic of target object
It is not significant, still, it is suggested so far without relevant invention.
During Acousto-optic filtering, due to acousto-optic interaction mechanism, broadband signal light is f by frequency0Ultrasonic wave diffraction, one
As in the case of, diffraction light includes two parts :+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam, and two-beam, which has, to hang down mutually
Straight polarization direction, and central wavelength is different.Wherein ,+1 grade of Acousto-optic filtering light beam is horizontal polarization, central wavelength λ+1, -1
Grade Acousto-optic filtering light beam is vertical polarization, central wavelength λ-1.During unusual acousto-optic interaction, Acousto-optic filtering process can cause
The variation of polarization state.That is, a length of λ of diffraction light medium wave+1, and be+1 grade of Acousto-optic filtering light beam of horizontal polarization, it derives from
The a length of λ of broadband signal light medium wave+1Vertical polarised light；The a length of λ of filtered beam medium wave-1, and -1 grade of Acousto-optic filtering polarized vertically
Light beam, the wavelength in broadband signal light are λ-1Horizontal polarization light.But due in diffraction light ,+1 grade of Acousto-optic filtering
Light beam is different with the central wavelength of -1 grade of Acousto-optic filtering light beam, therefore, it is impossible to be further calculated by directly measuring diffraction intensity
Polarization ratio of the broadband signal light at a certain wavelength.
Based on presently, there are the problem of, if can invent at a kind of pair of any wavelength of broadband signal light polarize composition measurement
Device and method will be greatly facilitated the application of acousto-optic filter, make it in Hyper spectral Imaging, and the fields such as spectrum analysis play bigger
Effect.
Summary of the invention
The purpose of the present invention is to provide a kind of broadband signal light polarization compositions than measuring device and method.
The technical solution adopted by the present invention is that:
A kind of broadband signal light polarization composition compares measuring device comprising control host and sequentially connected white light source,
Front-end optical device, target object, beam collimator, Acousto-optic filtering component and spectrum detection instrument, control host are separately connected sound
Light filtering unit and spectrum detection instrument, white light source continuous output beam in visible light near infrared spectral range come from white light
The broadband light in source forms collimated light beam, collimated light beam vertical irradiation to object body surface after front end optical device converges and collimates
Face simultaneously transmits, and the broadband signal light transmitted through target object carries the polarization information of target object, the width from target object
Band signal light, which converges through beam collimator and is collimated into collimated light beam, enters Acousto-optic filtering component progress Acousto-optic filtering, spectrographic detection
Instrument, which receives Acousto-optic filtering light beam and obtains spectroscopic data, is sent into control host, and control host is calculated based on spectroscopic data and comes from target
Polarization composition ratio in the broadband signal light of object at any wavelength.
Further, the white light source is white light LEDs.
Further, the front-end optical device is optical telescope system.
Further, the target object is the non-staining slice of Human Lung Cancer Tissue.
Further, the beam collimator is by achromatic doublet lens group and double glued concavees lens lens groups
At.
Further, the Acousto-optic filtering component include acousto-optic filter, precise angle adjust turntable, radio frequency source and
Light barrier, it is electrical motor driven that precise angle, which adjusts turntable, and precise angle adjusts turntable and passes through USB connecting line and control host
Connection, acousto-optic filter are fixed on the upper surface that precise angle adjusts turntable, and the rotation of turntable is adjusted by adjusting precise angle
Angle accurately controls acousto-optic filter with respect to the angle from beam collimator collimated light beam；
It is connected between acousto-optic filter and radio frequency source by radio frequency line, by the radio frequency signal frequency for changing radio frequency source output
+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam wavelength of acousto-optic filter output are continuously adjusted, light barrier is located at acousto-optic
The rear end of filter, light barrier are black aluminium alloy disk of the surface through anodized, and light barrier is received through Acousto-optic filtering
The non-filtered light beam of zero level of device output prevents the non-filtered light beam of zero level from influencing spectrum detection instrument to horizontal polarization in diffracted beam
The detection of+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarized vertically.
Further, it is 5 points that precise angle, which adjusts the angle minimum resolution of turntable, and precise angle adjusts the following table of turntable
Face connecting bracket, bracket fix precise angle adjusting turntable.
Further, the spectrum detection instrument is fiber grating spectrograph, and spectrum detection instrument includes fibre-optical probe, light splitting
Grating and high-sensitive CCD array, fibre-optical probe be used to receive+1 grade of Acousto-optic filtering light beam from Acousto-optic filtering component and-
1 grade of Acousto-optic filtering light beam, and be sent into spectro-grating and be divided；+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam are through dividing
It is received after light by ccd array, ccd array measures different wave length signal in+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam
The intensity of light, and data are sent into subsequent control host.
Further, spectral resolution of the spectrum detection instrument in visible light near infrared range is 0.2nm.
Further, the control host is made of PC machine, PC machine by USB connecting line respectively with radio frequency source, angle
Fine adjustment turntable and spectrum detection instrument connection, control host adjust turntable and spectrum to radio frequency source, precise angle respectively
Survey meter carries out parameter adjustment and control；PC machine receives the spectroscopic data from spectrum detection instrument, completes the analysis of spectroscopic data
And storage.
Further, the invention also discloses a kind of broadband signal light polarization composition ratio measuring methods comprising following step
It is rapid:
Step 201: open system, i.e. initialization white light source, Acousto-optic filtering component, spectrum detection instrument and control host；
Step 202: the parameter of front-end optical device is configured according to the position of white light source and luminous intensity parameter,
Guarantee to complete convergence and collimation to the light beam from white light source, and the light beam after collimation is sent to target object；
Step 203: the spatial position of target object being adjusted, keeps the collimated light beam from front-end optical device vertical
It is irradiated on target object in target object surface；
Step 204: adjusting parameter and the position of beam collimator, the broadband signal light transmitted through target object is received
Collimated light beam is sent into Acousto-optic filtering component and carries out Acousto-optic filtering by collection and collimation；
Step 205: the spatial position of acousto-optic filter and precise angle adjust turntable in adjustment Acousto-optic filtering component
Angle determines incident light polar angle θ0, guarantee accurately to receive the collimated light beam from beam collimator；Determine that radio frequency source is defeated
The frequency f of radiofrequency signal out0, Acousto-optic filtering is carried out to the collimated light beam from beam collimator, adjusts the position pair of light barrier
The non-filtered light beam of zero level exported through acousto-optic filter is received completely, prevents it from entering spectrum detection instrument, retention level
+ 1 grade of Acousto-optic filtering light beam of polarization and -1 grade of Acousto-optic filtering light beam polarized vertically；Using acousto-optic interaction relationship, calculates and enter and leave
Penetrating optrode angle is θ0, the frequency of radiofrequency signal is f0When ,+1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of sound polarized vertically
With the wavelength X of identical diffraction efficiency in light filtered beam0；
Step 206: the position of fibre-optical probe in spectrum detection instrument is adjusted, to+1 polarized through acousto-optic filter output level
Grade Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarized vertically are accurately received respectively, are adjusted in spectrum detection instrument
The gain of CCD and exposure time parameter, -1 grade for accurately measuring+1 grade of Acousto-optic filtering light beam of horizontal polarization and polarizing vertically
The spectral information of Acousto-optic filtering light beam；
Step 207: being analyzed and processed, calculated through acousto-optic using the spectroscopic data that control host obtains spectrum detection instrument
+ 1 grade of Acousto-optic filtering light beam of filter output level polarization and -1 grade of Acousto-optic filtering light beam polarized vertically are in wavelength X0Place
Intensity ratio can be obtained broadband signal light in wavelength X0The polarization composition ratio at place；Change radio frequency source output in Acousto-optic filtering component
The frequency of radiofrequency signal repeats step 205-207 and obtains broadband signal light in the polarization composition ratio of any wavelength；
Step 208: the broadband signal light polarization composition of acquisition being stored than measurement result, system is closed.
The invention adopts the above technical scheme, solves the problems, such as the precise measurement of broadband signal light polarization composition ratio, can be with
It being measured than accurately composition is polarized at wavelength any in broadband signal light, the precision of measurement is high, and the stability of system is good,
Method is simple to operation.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of structural schematic diagram of the broadband signal light polarization composition of the present invention than measuring device；
Fig. 2 is a kind of flow diagram of broadband signal light polarization composition ratio measuring method of the present invention.
Specific embodiment
As shown in the figures 1 and 2, the invention discloses a kind of broadband signal light polarization compositions to compare measuring device comprising control
Host and sequentially connected white light source, front-end optical device, target object, beam collimator, Acousto-optic filtering component and spectrum
Survey meter, control host are separately connected Acousto-optic filtering component and spectrum detection instrument, and white light source is in visible light near infrared spectrum model
Interior continuous output beam is enclosed, the broadband light from white light source forms collimated light beam after front end optical device converges and collimates, and puts down
Row beam orthogonal is irradiated to target object surface and transmits, and the broadband signal light transmitted through target object carries target object
Polarization information, the broadband signal light from target object, which converges through beam collimator and is collimated into collimated light beam, enters Acousto-optic filtering
Component carries out Acousto-optic filtering, and spectrum detection instrument, which receives Acousto-optic filtering light beam and obtains spectroscopic data, is sent into control host, control master
Machine calculates the polarization composition ratio in the broadband signal light from target object at any wavelength based on spectroscopic data.
Further, the white light source is white light LEDs.
Further, the front-end optical device is optical telescope system.
Further, the target object is the non-staining slice of Human Lung Cancer Tissue.
Further, the beam collimator is by achromatic doublet lens group and double glued concavees lens lens groups
At.
Further, the Acousto-optic filtering component include acousto-optic filter, precise angle adjust turntable, radio frequency source and
Light barrier, it is electrical motor driven that precise angle, which adjusts turntable, and precise angle adjusts turntable and passes through USB connecting line and control host
Connection, acousto-optic filter are fixed on the upper surface that precise angle adjusts turntable, and the rotation of turntable is adjusted by adjusting precise angle
Angle accurately controls acousto-optic filter with respect to the angle from beam collimator collimated light beam；
It is connected between acousto-optic filter and radio frequency source by radio frequency line, by the radio frequency signal frequency for changing radio frequency source output
+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam wavelength of acousto-optic filter output are continuously adjusted, light barrier is located at acousto-optic
The rear end of filter, light barrier are black aluminium alloy disk of the surface through anodized, and light barrier is received through Acousto-optic filtering
The non-filtered light beam of zero level of device output prevents the non-filtered light beam of zero level from influencing spectrum detection instrument to horizontal polarization in diffracted beam
The detection of+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarized vertically.
Further, it is 5 points that precise angle, which adjusts the angle minimum resolution of turntable, and precise angle adjusts the following table of turntable
Face connecting bracket, bracket fix precise angle adjusting turntable.
Further, the spectrum detection instrument is fiber grating spectrograph, and spectrum detection instrument includes fibre-optical probe, light splitting
Grating and high-sensitive CCD array, fibre-optical probe be used to receive+1 grade of Acousto-optic filtering light beam from Acousto-optic filtering component and-
1 grade of Acousto-optic filtering light beam, and be sent into spectro-grating and be divided；+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam are through dividing
It is received after light by ccd array, ccd array measures different wave length signal in+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam
The intensity of light, and data are sent into subsequent control host.
Further, spectral resolution of the spectrum detection instrument in visible light near infrared range is 0.2nm.
Further, the control host is made of PC machine, PC machine by USB connecting line respectively with radio frequency source, angle
Fine adjustment turntable and spectrum detection instrument connection, control host adjust turntable and spectrum to radio frequency source, precise angle respectively
Survey meter carries out parameter adjustment and control；PC machine receives the spectroscopic data from spectrum detection instrument, completes the analysis of spectroscopic data
And storage.
Further, the invention also discloses a kind of broadband signal light polarization composition ratio measuring methods comprising following step
It is rapid:
Step 201: open system, i.e. initialization white light source, Acousto-optic filtering component, spectrum detection instrument and control host；
Step 202: the parameter of front-end optical device is configured according to the position of white light source and luminous intensity parameter,
Guarantee to complete convergence and collimation to the light beam from white light source, and the light beam after collimation is sent to target object；
Step 203: the spatial position of target object being adjusted, keeps the collimated light beam from front-end optical device vertical
It is irradiated on target object in target object surface；
Step 204: adjusting parameter and the position of beam collimator, the broadband signal light transmitted through target object is received
Collimated light beam is sent into Acousto-optic filtering component and carries out Acousto-optic filtering by collection and collimation；
Step 205: the spatial position of acousto-optic filter and precise angle adjust turntable in adjustment Acousto-optic filtering component
Angle determines incident light polar angle θ0, guarantee accurately to receive the collimated light beam from beam collimator；Determine that radio frequency source is defeated
The frequency f of radiofrequency signal out0, Acousto-optic filtering is carried out to the collimated light beam from beam collimator, adjusts the position pair of light barrier
The non-filtered light beam of zero level exported through acousto-optic filter is received completely, prevents it from entering spectrum detection instrument, retention level
+ 1 grade of Acousto-optic filtering light beam of polarization and -1 grade of Acousto-optic filtering light beam polarized vertically；Using acousto-optic interaction relationship, calculates and enter and leave
Penetrating optrode angle is θ0, the frequency of radiofrequency signal is f0When ,+1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of sound polarized vertically
With the wavelength X of identical diffraction efficiency in light filtered beam0；
Step 206: the position of fibre-optical probe in spectrum detection instrument is adjusted, to+1 polarized through acousto-optic filter output level
Grade Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarized vertically are accurately received respectively, are adjusted in spectrum detection instrument
The gain of CCD and exposure time parameter, -1 grade for accurately measuring+1 grade of Acousto-optic filtering light beam of horizontal polarization and polarizing vertically
The spectral information of Acousto-optic filtering light beam；
Step 207: being analyzed and processed, calculated through acousto-optic using the spectroscopic data that control host obtains spectrum detection instrument
+ 1 grade of Acousto-optic filtering light beam of filter output level polarization and -1 grade of Acousto-optic filtering light beam polarized vertically are in wavelength X0Place
Intensity ratio can be obtained broadband signal light in wavelength X0The polarization composition ratio at place；Change radio frequency source output in Acousto-optic filtering component
The frequency of radiofrequency signal repeats step 205-207 and obtains broadband signal light in the polarization composition ratio of any wavelength；
Step 208: the broadband signal light polarization composition of acquisition being stored than measurement result, system is closed.
On specific broadband signal light polarization composition ratio measuring method, based on above-mentioned hardware device and software is controlled,
Be accomplished by the following way: the broadband light that white light source issues is after front end optical device is converged and collimated, vertical irradiation to target
Body surface, the broadband signal light transmitted through target object is received by beam collimator, and carries out shrink beam and collimation to it；Light beam
The collimated light beam of collimator output enters Acousto-optic filtering component, after acousto-optic filter carries out Acousto-optic filtering, becomes and is spatially separating
Three beams, comprising: the non-filtered light beam of zero level ,+1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of Acousto-optic filtering polarized vertically
Light beam, using light barrier stop the non-filtered light beam of zero level, retention level polarization+1 grade of Acousto-optic filtering light beam and polarize vertically-
1 grade of Acousto-optic filtering light beam；Precise angle adjusts turntable and accurately controls acousto-optic filter relative to from beam collimator collimation
The angle of light beam, i.e. incident light polar angle；Using acousto-optic interaction relationship, calculate when incident light polar angle is θ0, supersonic frequency f0
When, with identical diffraction efficiency in+1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of Acousto-optic filtering light beam polarized vertically
Wavelength X0；+ 1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of Acousto-optic filtering light beam polarized vertically are distinguished by spectrum detection instrument
It receives, and the spectral information of both measurements respectively；Control host receives the spectral information from spectrum detection instrument and carries out to it
Analysis, -1 grade of Acousto-optic filtering light beam medium wavelength λ for calculating separately out+1 grade of Acousto-optic filtering light beam of horizontal polarization and polarizing vertically0
The intensity for locating light, further finds out broadband signal light medium wavelength λ0The polarization composition ratio at place；Change the radio frequency letter of radio frequency source output
Number frequency, repeats the above steps, and the accurate measurement to composition ratio is polarized at wavelength any in broadband signal light may be implemented；Most
Afterwards, the broadband signal light polarization composition measured is stored than result, completes the measurement of broadband signal light polarization composition ratio
Journey.
The invention adopts the above technical scheme, solves the problems, such as the precise measurement of broadband signal light polarization composition ratio, can be with
It being measured than accurately composition is polarized at wavelength any in broadband signal light, the precision of measurement is high, and the stability of system is good,
Method is simple to operation.
Claims (10)
1. a kind of broadband signal light polarization composition compares measuring device, it is characterised in that: it includes control host and is sequentially connected
White light source, front-end optical device, target object, beam collimator, Acousto-optic filtering component and spectrum detection instrument, control host point
Not Lian Jie Acousto-optic filtering component and spectrum detection instrument, white light source continuous output beam in visible light near infrared spectral range,
The broadband light of white light source forms collimated light beam, collimated light beam vertical irradiation to object after front end optical device converges and collimates
Body surface face simultaneously transmits, and the broadband signal light transmitted through target object carries the polarization information of target object, comes from target object
Broadband signal light converged through beam collimator and be collimated into collimated light beam enter Acousto-optic filtering component carry out Acousto-optic filtering, spectrum
Survey meter, which receives Acousto-optic filtering light beam and obtains spectroscopic data, is sent into control host, and control host is based on spectroscopic data calculating and comes from
Polarization composition ratio in the broadband signal light of target object at any wavelength.
2. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: described is white
Light source is white light LEDs.
3. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: before described
End optical device is optical telescope system.
4. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: the mesh
Mark the non-staining slice that object is Human Lung Cancer Tissue.
5. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: the light
Beam collimator is made of achromatic doublet lens group and double glued concavees lens lens.
6. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: the sound
Light filtering unit includes that acousto-optic filter, precise angle adjusting turntable, radio frequency source and light barrier, precise angle adjust turntable and be
Electrical motor driven, precise angle adjust turntable and are connect by USB connecting line with control host, and acousto-optic filter is fixed on angle
The upper surface of fine adjustment turntable, it is opposite that the rotation angle by adjusting precise angle adjusting turntable accurately controls acousto-optic filter
Angle from beam collimator collimated light beam；
It is connected between acousto-optic filter and radio frequency source by radio frequency line, it is continuous by the radio frequency signal frequency for changing radio frequency source output
+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam wavelength of acousto-optic filter output are adjusted, light barrier is located at Acousto-optic filtering
The rear end of device, light barrier are black aluminium alloy disk of the surface through anodized, and light barrier receives defeated through acousto-optic filter
The non-filtered light beam of zero level out prevents the non-filtered light beam of zero level from influencing spectrum detection instrument to+1 grade of horizontal polarization in diffracted beam
The detection of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarized vertically.
7. a kind of broadband signal light polarization composition according to claim 6 compares measuring device, it is characterised in that: precise angle
The angle minimum resolution for adjusting turntable is 5 points, and precise angle adjusts the lower surface connecting bracket of turntable, and bracket is smart by the angle
Close adjusting turntable is fixed.
8. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: the light
Spectrum survey meter is fiber grating spectrograph, and spectrum detection instrument includes fibre-optical probe, spectro-grating and high-sensitive CCD array,
Fibre-optical probe is used to receive+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam from Acousto-optic filtering component, and is sent into and divides
Light grating is divided；+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam are received after being divided by ccd array, and CCD gusts
Column measure the intensity of different wave length signal light in+1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam, and after data are sent into
Continuous control host.
9. a kind of broadband signal light polarization composition according to claim 1 compares measuring device, it is characterised in that: the control
Host processed is made of PC machine, and PC machine adjusts turntable and spectrum detection instrument with radio frequency source, precise angle respectively by USB connecting line
Connection, control host adjusts turntable to radio frequency source, precise angle respectively and spectrum detection instrument carries out parameter adjustment and control；PC
Machine receives the spectroscopic data from spectrum detection instrument, completes the analysis and storage of spectroscopic data.
10. a kind of broadband signal light polarization composition ratio measuring method, it is characterised in that: itself the following steps are included:
Step 201: open system, i.e. initialization white light source, Acousto-optic filtering component, spectrum detection instrument and control host；
Step 202: the parameter of front-end optical device being configured according to the position of white light source and luminous intensity parameter, to next
It is converged and is collimated from the light beam of white light source, and the light beam after collimation is sent to target object；
Step 203: the spatial position of target object being adjusted, makes the collimated light beam from front-end optical device perpendicular to mesh
Mark body surface is irradiated on target object；
Step 204: adjust parameter and the position of beam collimator, the broadband signal light transmitted through target object is collected and
Collimated light beam is sent into Acousto-optic filtering component and carries out Acousto-optic filtering by collimation；
Step 205: the spatial position of acousto-optic filter and precise angle adjust the angle of turntable in adjustment Acousto-optic filtering component,
Determine incident light polar angle θ0, guarantee accurately to receive the collimated light beam from beam collimator；Determine that radio frequency source output is penetrated
The frequency f of frequency signal0, Acousto-optic filtering is carried out to the collimated light beam from beam collimator, adjusts the position of light barrier to through sound
The non-filtered light beam of zero level of optical filter output is received completely, prevents it from entering spectrum detection instrument, retention level polarization
+ 1 grade of Acousto-optic filtering light beam and -1 grade of Acousto-optic filtering light beam polarizing vertically；Using acousto-optic interaction relationship, incident light is calculated
Polar angle is θ0, the frequency of radiofrequency signal is f0When ,+1 grade of Acousto-optic filtering light beam of horizontal polarization and -1 grade of acousto-optic polarized vertically are filtered
With the wavelength X of identical diffraction efficiency in glistening light of waves beam0；
Step 206: the position of fibre-optical probe in spectrum detection instrument is adjusted, to+1 grade of sound polarized through acousto-optic filter output level
Light filtered beam and -1 grade of Acousto-optic filtering light beam polarized vertically are accurately received respectively, adjust CCD in spectrum detection instrument
Gain and exposure time parameter, accurate+1 grade of Acousto-optic filtering light beam for measuring horizontal polarization and -1 grade of acousto-optic polarized vertically filter
The spectral information of glistening light of waves beam；
Step 207: being analyzed and processed, calculated through Acousto-optic filtering using the spectroscopic data that control host obtains spectrum detection instrument
+ 1 grade of Acousto-optic filtering light beam of device output level polarization and -1 grade of Acousto-optic filtering light beam polarized vertically are in wavelength X0The intensity at place
Than can be obtained broadband signal light in wavelength X0The polarization composition ratio at place；Change radio frequency source in Acousto-optic filtering component and exports radio frequency
The frequency of signal repeats step 205-207 and obtains broadband signal light in the polarization composition ratio of any wavelength；
Step 208: the broadband signal light polarization composition of acquisition being stored than measurement result, system is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141904.0A CN109141643B (en) | 2018-09-28 | 2018-09-28 | Broadband signal light polarization component ratio measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141904.0A CN109141643B (en) | 2018-09-28 | 2018-09-28 | Broadband signal light polarization component ratio measuring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109141643A true CN109141643A (en) | 2019-01-04 |
| CN109141643B CN109141643B (en) | 2024-01-30 |
Family
ID=64813460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811141904.0A Active CN109141643B (en) | 2018-09-28 | 2018-09-28 | Broadband signal light polarization component ratio measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141643B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1417618A (en) * | 2002-10-14 | 2003-05-14 | 天津市先石光学技术有限公司 | Method of raising S/N ratio of AOTF spectroscopic optical system |
| CN1485605A (en) * | 2002-09-29 | 2004-03-31 | �Ϻ���ͨ��ѧ | Optical method for detecting discerptible medium skin layer and deep layer information |
| US7428048B1 (en) * | 2004-12-30 | 2008-09-23 | Spectral Molecular Imaging Inc. | Imaging elastic scattering spectroscopy |
| CN102023056A (en) * | 2009-09-16 | 2011-04-20 | 中国科学院西安光学精密机械研究所 | Programmable polarization hyperspectral imager based on field splicing |
| CN102226718A (en) * | 2011-03-31 | 2011-10-26 | 长春理工大学 | Sound light polarization spectrum camera |
| CN203881515U (en) * | 2014-03-28 | 2014-10-15 | 中国科学院上海技术物理研究所 | Self-reference acousto-optic tunable light filter diffraction performance testing device |
| CN105157837A (en) * | 2015-05-28 | 2015-12-16 | 中北大学 | Hyperspectral full polarization imager based on acousto-optic filtering and electro-optical phase modulation |
| CN107272226A (en) * | 2017-07-19 | 2017-10-20 | 福建师范大学 | A kind of acousto-optic based on angle tuning is adjustable filter |
| CN208704885U (en) * | 2018-09-28 | 2019-04-05 | 福建师范大学 | A kind of broadband signal light polarization composition compares measuring device |
-
2018
- 2018-09-28 CN CN201811141904.0A patent/CN109141643B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485605A (en) * | 2002-09-29 | 2004-03-31 | �Ϻ���ͨ��ѧ | Optical method for detecting discerptible medium skin layer and deep layer information |
| CN1417618A (en) * | 2002-10-14 | 2003-05-14 | 天津市先石光学技术有限公司 | Method of raising S/N ratio of AOTF spectroscopic optical system |
| US7428048B1 (en) * | 2004-12-30 | 2008-09-23 | Spectral Molecular Imaging Inc. | Imaging elastic scattering spectroscopy |
| CN102023056A (en) * | 2009-09-16 | 2011-04-20 | 中国科学院西安光学精密机械研究所 | Programmable polarization hyperspectral imager based on field splicing |
| CN102226718A (en) * | 2011-03-31 | 2011-10-26 | 长春理工大学 | Sound light polarization spectrum camera |
| CN203881515U (en) * | 2014-03-28 | 2014-10-15 | 中国科学院上海技术物理研究所 | Self-reference acousto-optic tunable light filter diffraction performance testing device |
| CN105157837A (en) * | 2015-05-28 | 2015-12-16 | 中北大学 | Hyperspectral full polarization imager based on acousto-optic filtering and electro-optical phase modulation |
| CN107272226A (en) * | 2017-07-19 | 2017-10-20 | 福建师范大学 | A kind of acousto-optic based on angle tuning is adjustable filter |
| CN208704885U (en) * | 2018-09-28 | 2019-04-05 | 福建师范大学 | A kind of broadband signal light polarization composition compares measuring device |
Non-Patent Citations (3)
| Title |
|---|
| 常凌颖;赵葆常;邱跃洪;汶德胜;马小龙;: "声光可调谐滤波器成像光谱仪光学***设计", 光学学报, no. 10 * |
| 张瑞;陈友华;李世伟;王志斌;温廷敦;王耀利;李克武;: "基于双AOTF的新型成像光谱偏振探测***", 光谱学与光谱分析, no. 05 * |
| 蒋红艳;何宁;: "基于声光效应的相干光探测方法的研究", 光电子技术, no. 03 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109141643B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103018179B (en) | Device and method for near-infrared polarization detection of crop water stress | |
| CN105066908B (en) | A kind of digital hologram three-dimensional Shape measure device based on multi-wavelength and multi-polarization state | |
| CN107917680B (en) | Minute angle method for quickly identifying based on balzed grating, | |
| CN104568842B (en) | The device and method of biological tissue's group delay dispersion is measured with reference to FDOCT | |
| CN107272226A (en) | A kind of acousto-optic based on angle tuning is adjustable filter | |
| CN105866061B (en) | The anticoincidence pulse detection device and anticoincidence pulse detection method of THz wave time-domain information | |
| CN108508503B (en) | A kind of achievable map and the remote-sensing imaging system of the integrated detection of structural information | |
| CN109613560A (en) | EO-1 hyperion three-dimensional laser radar system based near infrared light Full wave shape ranging | |
| CN206497027U (en) | Monochromatic light spectrometer polarization domain optical coherence tomography system based on photoswitch | |
| CN101153914A (en) | Remote sensing mechanism testing device and method thereof | |
| CN109084904A (en) | A kind of high-accuracy wavelength measuring device based on three F-P etalons | |
| CN108489908B (en) | Rapid citrus greening disease detection method based on polarized light technology | |
| CN208704885U (en) | A kind of broadband signal light polarization composition compares measuring device | |
| CN111157484A (en) | Near infrared spectrum model transfer method for fruit sugar degree detection equipment | |
| US9568366B2 (en) | Multidimensional spectrometer | |
| CN104502067A (en) | Relative diffraction efficiency tester for Fourier transformation plane grating | |
| CN109141643A (en) | A kind of broadband signal light polarization composition is than measuring device and method | |
| CN208704882U (en) | A kind of dispersion compensation device of Acousto-optic filtering diffraction light | |
| CN107389204B (en) | test platform and method for weak spectrum signals of infrared focal plane detector | |
| CN205843814U (en) | A kind of THz wave frequency measuring equipment based on CARS effect | |
| JP2003139512A (en) | Thickness and moisture measuring method and thickness and moisture measuring device | |
| CN204988505U (en) | Sweep type beam split spectrum appearance | |
| CN104535191A (en) | Polarization spectral imaging measuring structure based on magnetic vortice light and AOTF | |
| CN210294038U (en) | Line domain frequency domain optical coherence tomography detection and longitudinal coordinate calibration device | |
| CN107449585A (en) | A kind of measurement apparatus and measuring method of acousto-optic filter angular aperture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |