CN105954154A - Method and device for measuring two-dimensional light scattering angular distribution of suspended particles - Google Patents
Method and device for measuring two-dimensional light scattering angular distribution of suspended particles Download PDFInfo
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- CN105954154A CN105954154A CN201610277996.XA CN201610277996A CN105954154A CN 105954154 A CN105954154 A CN 105954154A CN 201610277996 A CN201610277996 A CN 201610277996A CN 105954154 A CN105954154 A CN 105954154A
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 230000003287 optical effect Effects 0.000 claims description 69
- 239000000126 substance Substances 0.000 claims description 43
- 239000013618 particulate matter Substances 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 7
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- 238000007667 floating Methods 0.000 description 4
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
- G01N15/0211—Investigating a scatter or diffraction pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G01N15/075—
Abstract
The invention provides a method and a device for measuring the two-dimensional light scattering angular distribution of suspended particles. The light emitted from a light source passes through a backward scattered light receiving lens to shoot into to-be-measured suspended particles so as to generate the forward scattered light and the backward scattered light. The forward scattered light, which passes a forward scattered light receiving lens, is detected by a forward scattered light detection module. The backward scattered light, which passes a backward scattered light receiving lens, is detected by a backward scattered light detection module. In this way, the two-dimensional light scattering angular distribution of suspended particles is obtained. The two-dimensional light scattering angular distribution of suspended particles is composed of the coverage range of the scattering angles of particles that can be detected by the forward scattered light detection module together with the backward scattered light detection module, and the coverage range of azimuth angles corresponding to different scattering angles. According to the technical scheme of the invention, the two-dimensional light scattering angular distribution of suspended particles within a large-angle range can be measured. Therefore, based on the method and the device, a greater amount of more comprehensive information of suspended particles can be obtained.
Description
Technical field
The present invention relates to device and the side of a kind of two-dimentional light scattering angular distribution measuring suspended particulate substance
Method.
Background technology
We live among the encirclement of suspended particulate substance.In the environment that we depend on for existence, everywhere
Left floating big and small particulate matter.Left floating dust, pollen, steam etc. in atmosphere；In lake,
Ocean water body left floating algae, antibacterial, organic or inorganic sediments etc..Detection suspended particulate substance
Closely bound up with environmental monitoring, ecological Studies etc..Such as, China's urban air-quality is perplexed recently
Haze, measures the inspection that technology is air quality of PM2.5 (particle diameter grain amount less than 2.5 microns)
Survey, Environmental capacity etc. provide important indicator.Such as, marine phytoplankton occupy the whole world more than half
Primary productivity, it is floating that research marine ecology, fishery resources must measure that these suspend in the seawater
Trip plant.
Optical means is widely used in because of the advantage such as it is lossless, noncontact, resolution are high suspending
The detection of grain thing.Light scattering method is the measuring method of a kind of active illumination, and it make use of scattering strength
The advantage being closely related with size with the form of angle, spectral signature and the suspended particulate substance of polarization, closely
More and more paid attention to over Nian.The most domestic Chinese Academy of Sciences South Sea the prosperous team of Cao Wen by modeling
With the light scattering distribution calculating Sargassum, it was found that inherent optics amounts such as the absorption of Sargassum, scattering and big
The geometric properties such as little, structure.The LISST series of products that sequoia company of the U.S. releases, by surveying
Scattering angular distribution in the range of amount forward direction 0.08-15 °, it is thus achieved that particle 1.25-200 micrometer range
Interior particle diameter distribution.Zhong Xing instrument company develops aerosol detection technique in the market, measures gas
The intensity of the multiple discrete angle of colloidal sol, obtains the indexs such as aerocolloidal size, absorptance, thus
For offer technical support of tracing to the source.
Current technology, the most only utilizes the scattered light of the most discrete angle of small angle range, obtains
The single optics of suspended particulate substance or geometric properties.But the difficulty that these technology face is, according to
Limited data often result in erroneous judgement, understand for data and bring difficulty.
Summary of the invention
Present invention is primarily targeted at and overcome the deficiencies in the prior art, it is provided that a kind of measurement particle
The device and method of the two-dimentional light scattering angular distribution of thing, it is possible to measure suspension in polarizers of big angle scope
The light scattering two dimension angular distribution of grain thing, more fully information more for acquisition suspended particulate substance provides
Probability.
For achieving the above object, the present invention is by the following technical solutions:
The device of a kind of two-dimentional light scattering angular distribution measuring suspended particulate substance, including light source, backward
Scattering optical receiver lens, forward scattering optical receiver lens, rear orientation light detecting module and forward direction
Scattered light detecting module, the light that described light source sends is incident after described back scattering light-receiving lens
On suspended particulate substance to be measured in sample cell, before producing forward scattering optical receiver lens described in directive
To the rear orientation light of back scattering light-receiving lens described in scattered light and directive, dissipate through described forward direction
The described forward scattering light penetrating optical receiver lens is detected by described forward scattering optical detection module, Jing Guosuo
The described rear orientation light stating back scattering light-receiving lens is visited by described rear orientation light detecting module
Surveying, be derived from the two-dimentional light scattering angular distribution of described particulate matter, described two dimension light scattering angle is divided
Cloth includes that described forward scattering optical detection module is caned together with described rear orientation light detecting module
The coverage of the angle of scattering of the described particulate matter detected, and the orientation corresponding to different angle of scatterings
The coverage at angle.
Further:
Described rear orientation light detecting module includes beam splitter and back scattering receptor, described backward scattered
Penetrating receptor and include rear orientation light collecting lens and the first detector, described beam splitter is positioned at described light
Between source and described back scattering light-receiving lens, the light that described light source sends is first transmitted through described beam splitting
Mirror is again incident on described back scattering light-receiving lens, through the institute of described back scattering light-receiving lens
Stating rear orientation light to reflect on described beam splitter, the described rear orientation light of reflection is through described
Described first detector is projected in out of focus mode after rear orientation light collecting lens.
Described forward scattering optical detection module includes forward scattering light collecting lens and the second detector, warp
The described forward scattering light crossing described forward scattering optical receiver lens incides described forward scattering light meeting
Poly-lens, project described second detection in out of focus mode after described forward scattering light collecting lens
Device.
Also include being arranged on described forward scattering optical receiver lens and described forward scattering optical detection module
Between diaphragm, described diaphragm blocks forward-scattering angle less than the light of predetermined angle theta 0 to avoid its quilt
Described forward scattering optical detection module receives.
The half-angle that described back scattering light-receiving lens can collect light is θ b, the back scattering of covering
The scope at angle is [180 ° of-2* θ b, 180 °], and described forward scattering optical receiver lens can collect light
Half-angle be θ f, the scope of the forward-scattering angle of covering is [θ 0,2* θ f].
Half angle θ b=θ f=45 °, described forward scattering optical detection module is visited together with described rear orientation light
Surveying module is [θ 0,180 °] to the coverage of the angle of scattering of described particulate matter.
Also include the aperture light channel structure before being arranged on described first detector, described aperture light channel structure
Described first detector is visited by the suspended particulate substance to be measured of the pre-position being in sample cell
The contribution of the scattered light surveyed is not less than predetermined extent, it is preferable that described aperture light channel structure includes having
The dark slide of aperture and the aperture light meeting between described dark slide and described first detector
Poly-lens, described aperture position in described dark slide and the position residing for described suspended particulate substance to be measured
Put corresponding.
Also include the aperture light channel structure before being arranged on described second detector, described aperture light channel structure
Described second detector is visited by the suspended particulate substance to be measured of the pre-position being in sample cell
The contribution of the scattered light surveyed is not less than predetermined extent, it is preferable that described aperture light channel structure includes having
The dark slide of aperture and the aperture light meeting between described dark slide and described second detector
Poly-lens, described aperture position in described dark slide and the position residing for described suspended particulate substance to be measured
Put corresponding.
Described light source is LASER Light Source, and described rear orientation light detecting module is visited with described forward scattering light
Survey module and all use CCD, at least use distributed before the CCD of described forward scattering optical detection module
Attenuator, to increase the dynamic range of CCD.
A kind of method of two-dimentional light scattering angular distribution measuring suspended particulate substance, uses described measurement
The device of the two-dimentional light scattering angular distribution of suspended particulate substance carries out suspended particulate substance two dimension light scattering angle
The measurement of degree distribution, the light that wherein said light source sends enters after described back scattering light-receiving lens
On the suspended particulate substance to be measured being mapped in sample cell, produce forward scattering optical receiver lens described in directive
The rear orientation light of back scattering light-receiving lens described in forward scattering light and directive, through described forward direction
The described forward scattering light of scattering optical receiver lens is detected by described forward scattering optical detection module, passes through
The described rear orientation light of described back scattering light-receiving lens is by described rear orientation light detecting module
Detection, is derived from the two-dimentional light scattering angular distribution of described particulate matter, described two dimension light scattering angle
Distribution includes described forward scattering optical detection module institute's energy together with described rear orientation light detecting module
The coverage of the angle of scattering of the described particulate matter enough detected, and the side corresponding to different angle of scatterings
The coverage of parallactic angle.
Beneficial effects of the present invention:
The present invention proposes device and the side of a kind of two-dimentional light scattering angular distribution measuring suspended particulate substance
Method, makes light oblique incidence illuminate sample by back scattering light-receiving lens, can be predetermined by having
The back scattering light-receiving lens of large-numerical aperture and forward scattering optical receiver lens, thus can collect big
The forward scattering light of angular range and rear orientation light, and then suspension can be measured in polarizers of big angle scope
The light scattering two dimension angular distribution of particulate matter, increases measurement data amount, thus for obtaining suspended particulate substance
More, more fully information provides probability.It is an advantage of the invention that and can realize large-scale two dimension
Angular distribution is measured, and can realize measuring, in particular for the measurement of single particle simultaneously.
Accompanying drawing explanation
Fig. 1 is the definition schematic diagram of scatteringangleθ and azimuth φ.
Fig. 2 is the principle schematic of the present invention.
Fig. 3 show the two dimension angular scope that principle shown in Fig. 2 is covered.
Fig. 4 is the apparatus structure schematic diagram of an embodiment of the present invention.
Fig. 5 is the apparatus structure schematic diagram of a kind of specific embodiment of the present invention.
Fig. 6 is the aperture light channel structure schematic diagram in the preferred embodiment of the present invention.
Fig. 7 a and Fig. 7 b is that backward (a) of the high score bulbec utilizing 5 microns of sizes of measurement device is with front
To (b) scatter diagram.
Detailed description of the invention
Hereinafter embodiments of the present invention are elaborated.It is emphasized that the description below is only
It is exemplary rather than in order to limit the scope of the present invention and application thereof.
Refering to Fig. 1 to Fig. 5, in one embodiment, a kind of two-dimentional light measuring suspended particulate substance dissipates
Penetrate the device of angular distribution, connect including light source 1, back scattering light-receiving lens L1, forward scattering light
Receive lens L2, rear orientation light detecting module and forward scattering optical detection module, described light source 1
The light sent incides the suspension to be measured in sample cell 5 after described back scattering light-receiving lens L1
On particulate matter, produce described in forward scattering light and the directive of forward scattering optical receiver lens L2 described in directive
The rear orientation light of back scattering light-receiving lens L1, through described forward scattering optical receiver lens L2
Described forward scattering light detected by described forward scattering optical detection module, through described rear orientation light
The described rear orientation light receiving lens L1 is detected by described rear orientation light detecting module, is derived from
The two-dimentional light scattering angular distribution of described particulate matter, described two dimension light scattering angular distribution include described before
To scattered light detecting module can detect together with described rear orientation light detecting module described in
The coverage of the angle of scattering of grain thing, and the azimuthal coverage corresponding to different angle of scatterings.
Refering to Fig. 4 and Fig. 5, in an advantageous embodiment, described rear orientation light detecting module bag
Including beam splitter 2 and back scattering receptor, back scattering receptor includes rear orientation light collecting lens
With the first detector 3, described beam splitter 2 is positioned at described light source 1 and described back scattering light-receiving is saturating
Between mirror L1, light that described light source 1 sends first transmitted through described beam splitter 2 be again incident on described after
To scattering optical receiver lens L1, through the described back scattering of described back scattering light-receiving lens L1
Light reflects on described beam splitter 2, and the described rear orientation light of reflection is through rear orientation light meeting
Project described first detector 3 in out of focus mode after poly-lens, the picture point i.e. focused on detector (as
Camera) front of or behind, thus the scattered light of Two dimensional Distribution is projected on detector.
Refering to Fig. 4 and Fig. 5, in an advantageous embodiment, described forward scattering optical detection module bag
Include forward scattering light collecting lens and the second detector 4, through described forward scattering optical receiver lens L2
Described forward scattering light incide described forward scattering light collecting lens, through described forward scattering light
Described second detector 4 is projected in out of focus mode after collecting lens.
Refering to Fig. 5, in an advantageous embodiment, device also includes being arranged on described forward scattering light
Receive the diaphragm 6 between lens L2 and described forward scattering optical detection module, before described diaphragm 6 blocks
It is less than the light of predetermined angle theta 0 to avoid it to be received by described forward scattering optical detection module to angle of scattering
Arrive.
In a further embodiment, described back scattering light-receiving lens L1 can collect the half of light
Angle is θ b, and the scope at the back scattering angle of covering is [180 ° of-2* θ b, 180 °], described forward direction
It is θ f that scattering optical receiver lens L2 can collect the half-angle of light, and the scope of the forward-scattering angle of covering is
[θ0,2*θf].It is preferred that such as half angle θ b=θ f=45 °, described forward scattering optical detection module
Together with described rear orientation light detecting module to the coverage of the angle of scattering of described particulate matter be [θ 0,
180°]。
Refering to Fig. 6, in an advantageous embodiment, device also includes being arranged on described first detector
Aperture light channel structure before 3, described aperture light channel structure is in the precalculated position in sample cell 5
The contribution of the scattered light of described first detector 3 detection is not less than predetermined by the suspended particulate substance to be measured at place
Degree.It is highly preferred that described aperture light channel structure includes having foraminate dark slide and be positioned at described
Aperture convergence of rays lens between dark slide and described first detector 3, described aperture is in described screening
Position on tabula rasa is corresponding with described suspended particulate substance location to be measured.
Refering to Fig. 6, in an advantageous embodiment, device also includes being arranged on described second detector
Aperture light channel structure before 4, described aperture light channel structure is in the precalculated position in sample cell 5
The contribution of the scattered light of described second detector 4 detection is not less than predetermined by the suspended particulate substance to be measured at place
Degree.It is highly preferred that described aperture light channel structure includes having foraminate dark slide 7 and be positioned at institute
Stating the aperture convergence of rays lens L6 between dark slide 7 and described second detector 4, described aperture exists
Position in described dark slide 7 is corresponding with described suspended particulate substance location to be measured.
Described light source 1 can be LASER Light Source, described rear orientation light detecting module and described forward scattering
Optical detection module all uses CCD to detect.Optical detection module can also use CMOS camera to carry out
Detection.
Preferably, at least before the CCD of described forward scattering optical detection module, use distributed attenuator,
To increase the dynamic range of CCD.
In another kind of embodiment, the side of a kind of two-dimentional light scattering angular distribution measuring suspended particulate substance
Method, uses the device of the described two-dimentional light scattering angular distribution measuring suspended particulate substance to carry out suspension
The measurement of grain thing two dimension light scattering angular distribution, the light that wherein said light source 1 sends is through described backward
Incide on the suspended particulate substance to be measured in sample cell 5 after scattering optical receiver lens L1, produce directive
Back scattering light-receiving described in the forward scattering light of described forward scattering optical receiver lens L2 and directive is saturating
The rear orientation light of mirror L1, through the described forward scattering light of described forward scattering optical receiver lens L2
Detected by described forward scattering optical detection module, through the institute of described back scattering light-receiving lens L1
State rear orientation light to be detected by described rear orientation light detecting module, be derived from the two of described particulate matter
Dimension light scattering angular distribution, described two dimension light scattering angular distribution includes described forward scattering optical detection mould
The angle of scattering of the described particulate matter that block can detect together with described rear orientation light detecting module
Coverage, and the azimuthal coverage corresponding to different angle of scatterings.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As it is shown in figure 1, scatteringangleθ is the angle between Z-direction incident illumination and scattering light A, change
Scope, from 0 ° to 180 °, forms the XYZ in Fig. 1 with incident illumination direction Z according to the right-hand rule three-dimensional
Space, scattered light projection in X-Y plane is azimuth φ with the angle of X-direction, its change model
Enclose is 0 ° to 360 °.
As in figure 2 it is shown, incident illumination is after back scattering light-receiving lens L1 in figure, oblique it is mapped to
In sample cell, illuminating particulate matter O, rear orientation light is collected by back scattering light-receiving lens L1, front
Collected by forward scattering optical receiver lens L2 to scattered light, finally connect by surface detector (such as CCD)
Receive.Due to 0 ° of scattered light with unscattered light in the same direction, in order to eliminate the shadow of unscattered light
Ringing, we utilize a diaphragm to block, and the only angle of scattering light more than θ 0 just can be connect by detector
Receive.If the half-angle that back scattering light-receiving lens L1 can collect light is θ b, then backward scattered
The scope of firing angle is [180 ° of-2* θ b, 180 °], same, if forward scattering optical receiver lens L2
The half-angle that can collect light is θ f, then the scope of forward-scattering angle is [θ 0,2* θ f].Therefore,
If it will be seen that θ b=θ f=45 °, then just can realize angle of scattering at [θ 0,180 °]
In the range of reception this be i.e. polarizers of big angle scope.
If we assume that θ b=θ f=45 °, θ 0=0, then showing that Fig. 2 device covers such as Fig. 3
The scope of two dimension angular (θ, φ).From figure 3, it can be seen that Fig. 2 device can cover θ's
Gamut, i.e. [0,180 °]；And rear orientation light receives lens L1 and forward scattering light-receiving is saturating
Mirror L2 receives azimuth φ simultaneously, and for forward direction, when θ=0 °, φ coverage is maximum,
Including [270 °, 360 °] and [0,90 °], and the scope of φ tends to 0 when θ=90 °.Right
For backward, the φ scope that back scattering light-receiving lens L1 can receive when θ=180 °, φ
Coverage is maximum, including [90 °, 270 °]；And φ scope minimum reduces to 0 when θ=180 °.
Sum it up, we utilize the principle of Fig. 2, it is possible to obtain the distribution of (θ, φ).This i.e. obtains
Obtain two dimension angular distribution.
Additionally, due to back scattering light-receiving lens L1 and forward scattering optical receiver lens L2 receives simultaneously
Collection scattered light, if controlling the face receptor synchronous working at two ends, then just can obtain suspension simultaneously
The distribution of two dimension angular on a large scale of grain O scattered light.This i.e. realizes measuring simultaneously.
Example
As shown in Figure 4, light source provide finite width directional light, beam splitter by back scattering luminous reflectance,
And separate with incident illumination.Incident illumination, through back scattering light-receiving lens, illuminates in the way of oblique incidence
Sample, the scattered light of forward direction is collected by forward scattering optical receiver lens, then by forward scattering optical detection
Module receives.Backward scattered light is collected by back scattering light-receiving lens, after beam splitter reflects,
Received by back scattering receptor.Light source, rear orientation light detecting module and forward direction can be provided by laser
Scattered light detecting module all uses CCD to detect.
As an example, the polymer microsphere of 5 microns is suspended in the water of sample cell by we, profit
Measuring with device, obtain Fig. 7 a and Fig. 7 b, wherein Fig. 7 a is backscatter pattern, and Fig. 7 b is
Forward scattering figure, they are same granules, measure through simultaneously and obtain.In Fig. 7 a and Fig. 7 b
The corresponding same θ of each striped, on striped, diverse location is different φ.In Fig. 7 a
The θ that left side striped is corresponding is 90 °, and the θ that rightmost striped is corresponding is 180 degree, and in Fig. 7 b,
The θ that Far Left striped is corresponding is 0 °, and the θ that rightmost striped is corresponding is 90 °.Fig. 7 a and Fig. 7 b
In shown scattering speckle figure, when θ=0 ° and 180 °, φ covers 180 °；θ=45 ° or 135 °
Time, φ covers 90 °；When θ=90 °, the scope of φ tends to 0.
It should be noted that be divided into three pieces of regions on Fig. 7 b, it is because before CCD employing
Distributed attenuator, so can increase the dynamic range of CCD.
Above content is that combination is concrete/the most made for the present invention the most specifically
Bright, it is impossible to assert the present invention be embodied as be confined to these explanations.For technology belonging to the present invention
For the those of ordinary skill in field, without departing from the inventive concept of the premise, it can also be to this
The embodiment having described that a bit makes some replacements or modification, and these substitute or variant all should
It is considered as belonging to protection scope of the present invention.
Claims (10)
1. the device of the two-dimentional light scattering angular distribution measuring suspended particulate substance, it is characterised in that
Including light source, back scattering light-receiving lens, forward scattering optical receiver lens, back scattering optical detection
Module and forward scattering optical detection module, the light that described light source sends is through described rear orientation light
Incide on the suspended particulate substance to be measured in sample cell after receiving lens, produce forward scattering described in directive
The rear orientation light of back scattering light-receiving lens described in the forward scattering light of optical receiver lens and directive,
Through the described forward scattering light of described forward scattering optical receiver lens by described forward scattering optical detection
Module detect, through described back scattering light-receiving lens described rear orientation light by described backward dissipate
Penetrate the detection of optical detection module, be derived from the two-dimentional light scattering angular distribution of described particulate matter, described two
Dimension light scattering angular distribution includes described forward scattering optical detection module and described back scattering optical detection
The coverage of the angle of scattering of the described particulate matter that module can detect together, and corresponding to not
Azimuthal coverage with angle of scattering.
2. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 1
Put, it is characterised in that described rear orientation light detecting module includes that beam splitter receives with back scattering
Device, described back scattering receptor includes rear orientation light collecting lens and the first detector, described point
Shu Jing is between described light source and described back scattering light-receiving lens, and the light that described light source sends is first
It is again incident on described back scattering light-receiving lens, through described back scattering transmitted through described beam splitter
The described rear orientation light of optical receiver lens reflects on described beam splitter, reflection described backward
Scattered light projects described first detection in out of focus mode after described rear orientation light collecting lens
Device.
3. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 1
Put, it is characterised in that described forward scattering optical detection module includes forward scattering light collecting lens and
Two detectors, through the described forward scattering light of described forward scattering optical receiver lens incide described before
To scattered light collecting lens, after described forward scattering light collecting lens, project institute in out of focus mode
State the second detector.
4. the two-dimentional light scattering angle measuring suspended particulate substance as described in any one of claims 1 to 3
The device of degree distribution, it is characterised in that also include being arranged on described forward scattering optical receiver lens and institute
Stating the diaphragm between forward scattering optical detection module, described diaphragm blocks forward-scattering angle less than predetermined angle
The light of degree θ 0 is to avoid it to be received by described forward scattering optical detection module.
5. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 4
Put, it is characterised in that the half-angle that described back scattering light-receiving lens can collect light is θ b, cover
The scope at back scattering angle be [180 ° of-2* θ b, 180 °], described forward scattering optical receiver lens
The half-angle that can collect light is θ f, and the scope of the forward-scattering angle of covering is [θ 0,2* θ f].
6. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 5
Putting, it is characterised in that half angle θ b=θ f=45 °, described forward scattering optical detection module is together with described
Rear orientation light detecting module is [θ 0,180 °] to the coverage of the angle of scattering of described particulate matter.
7. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 2
Put, it is characterised in that also include the aperture light channel structure before being arranged on described first detector, described
The suspended particulate substance to be measured of the pre-position that aperture light channel structure is in sample cell is to described
The contribution of the scattered light of the first detector detection is not less than predetermined extent, it is preferable that described aperture light path
Structure includes having foraminate dark slide and between described dark slide and described first detector
Aperture convergence of rays lens, described aperture position in described dark slide and described suspension to be measured
Grain thing location is corresponding.
8. the dress of the two-dimentional light scattering angular distribution measuring suspended particulate substance as claimed in claim 3
Put, it is characterised in that also include the aperture light channel structure before being arranged on described second detector, described
The suspended particulate substance to be measured of the pre-position that aperture light channel structure is in sample cell is to described
The contribution of the scattered light of the second detector detection is not less than predetermined extent, it is preferable that described aperture light path
Structure includes having foraminate dark slide and between described dark slide and described second detector
Aperture convergence of rays lens, described aperture position in described dark slide and described suspension to be measured
Grain thing location is corresponding.
9. the two-dimentional light scattering angle measuring suspended particulate substance as described in any one of claims 1 to 3
The device of degree distribution, it is characterised in that described light source is LASER Light Source, described back scattering optical detection
Module and described forward scattering optical detection module all use CCD, at least in described forward scattering optical detection
Distributed attenuator is used, to increase the dynamic range of CCD before the CCD of module.
10. the method for the two-dimentional light scattering angular distribution measuring suspended particulate substance, it is characterised in that
The two-dimentional light scattering angle measuring suspended particulate substance as described in any one of claim 1-9 is used to divide
The device of cloth carries out the measurement of suspended particulate substance two dimension light scattering angular distribution, and wherein said light source sends
Light after described back scattering light-receiving lens, incide the suspended particulate substance to be measured in sample cell
On, back scattering described in the forward scattering light of forward scattering optical receiver lens described in generation directive and directive
The rear orientation light of optical receiver lens, through the described forward scattering of described forward scattering optical receiver lens
Light is detected by described forward scattering optical detection module, through described in described back scattering light-receiving lens
Rear orientation light is detected by described rear orientation light detecting module, is derived from the two dimension of described particulate matter
Light scattering angular distribution, described two dimension light scattering angular distribution includes described forward scattering optical detection module
The angle of scattering of the described particulate matter that can detect together with described rear orientation light detecting module
Coverage, and the azimuthal coverage corresponding to different angle of scatterings.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107421862A (en) * | 2017-08-13 | 2017-12-01 | 煤炭科学技术研究院有限公司 | A kind of sensor of dust concentration |
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246294Y (en) * | 1995-09-30 | 1997-01-29 | 张福根 | Angle distribution measuring device for scattered light |
| JP2003329570A (en) * | 2002-05-10 | 2003-11-19 | Horiba Ltd | Apparatus for measuring distribution of particle size |
| CN101368899A (en) * | 2008-10-16 | 2009-02-18 | 丹东百特科技有限公司 | Single-beam double-lens laser particle analyzer |
| CN101458458A (en) * | 2007-10-09 | 2009-06-17 | Asml荷兰有限公司 | Alignment method and apparatus, lithographic apparatus, metrology apparatus and device manufacturing method |
| US20090290156A1 (en) * | 2008-05-21 | 2009-11-26 | The Board Of Trustee Of The University Of Illinois | Spatial light interference microscopy and fourier transform light scattering for cell and tissue characterization |
| CN101629903A (en) * | 2009-08-19 | 2010-01-20 | 南京信息工程大学 | Optical system of scattering-type cloud particle detector |
| CN102175580A (en) * | 2011-02-21 | 2011-09-07 | 河南科技大学 | Device and method for measuring particulate motion of turbid media by using dynamic speckle method |
| CN202210068U (en) * | 2011-06-20 | 2012-05-02 | 丹东市百特仪器有限公司 | Single light source and double light beam laser particle analyzer |
| CN102590051A (en) * | 2012-02-17 | 2012-07-18 | 丹东市百特仪器有限公司 | Oblique incident laser particle analyzer |
| CN102636131A (en) * | 2012-05-09 | 2012-08-15 | 丹阳市民杰光学仪器有限公司 | In-situ measurement device for processing miniature aspheric surface |
| CN203216616U (en) * | 2012-12-28 | 2013-09-25 | 中国科学院西安光学精密机械研究所 | Single-time signal-to-noise ratio measurement device based on chirped pulse character |
| CN103487359A (en) * | 2013-09-25 | 2014-01-01 | 江西科技师范大学 | Full-automatic measuring device for form and distribution of laser excitated cells and particles |
| CN103674791A (en) * | 2013-12-16 | 2014-03-26 | 天津大学 | Double beam irradiation-based interfering particle image measurement method |
| CN103868831A (en) * | 2014-02-26 | 2014-06-18 | 天津大学 | Cloud particle spectrum distribution measuring method and system |
| CN104457614A (en) * | 2014-11-11 | 2015-03-25 | 南昌航空大学 | Stripe reflection three-dimensional measurement method based on binary stripe defocusing |
| CN105136743A (en) * | 2015-08-07 | 2015-12-09 | 华中科技大学 | Single particle scattering measurement method based on microfluidic chip particle capturing |
| CN105241640A (en) * | 2015-11-24 | 2016-01-13 | 常州工学院 | Device for measuring blue light weighted radiation intensity and method thereof |
-
2016
- 2016-04-28 CN CN201610277996.XA patent/CN105954154A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246294Y (en) * | 1995-09-30 | 1997-01-29 | 张福根 | Angle distribution measuring device for scattered light |
| JP2003329570A (en) * | 2002-05-10 | 2003-11-19 | Horiba Ltd | Apparatus for measuring distribution of particle size |
| CN101458458A (en) * | 2007-10-09 | 2009-06-17 | Asml荷兰有限公司 | Alignment method and apparatus, lithographic apparatus, metrology apparatus and device manufacturing method |
| US20090290156A1 (en) * | 2008-05-21 | 2009-11-26 | The Board Of Trustee Of The University Of Illinois | Spatial light interference microscopy and fourier transform light scattering for cell and tissue characterization |
| CN101368899A (en) * | 2008-10-16 | 2009-02-18 | 丹东百特科技有限公司 | Single-beam double-lens laser particle analyzer |
| CN101629903A (en) * | 2009-08-19 | 2010-01-20 | 南京信息工程大学 | Optical system of scattering-type cloud particle detector |
| CN102175580A (en) * | 2011-02-21 | 2011-09-07 | 河南科技大学 | Device and method for measuring particulate motion of turbid media by using dynamic speckle method |
| CN202210068U (en) * | 2011-06-20 | 2012-05-02 | 丹东市百特仪器有限公司 | Single light source and double light beam laser particle analyzer |
| CN102590051A (en) * | 2012-02-17 | 2012-07-18 | 丹东市百特仪器有限公司 | Oblique incident laser particle analyzer |
| CN102636131A (en) * | 2012-05-09 | 2012-08-15 | 丹阳市民杰光学仪器有限公司 | In-situ measurement device for processing miniature aspheric surface |
| CN203216616U (en) * | 2012-12-28 | 2013-09-25 | 中国科学院西安光学精密机械研究所 | Single-time signal-to-noise ratio measurement device based on chirped pulse character |
| CN103487359A (en) * | 2013-09-25 | 2014-01-01 | 江西科技师范大学 | Full-automatic measuring device for form and distribution of laser excitated cells and particles |
| CN103674791A (en) * | 2013-12-16 | 2014-03-26 | 天津大学 | Double beam irradiation-based interfering particle image measurement method |
| CN103868831A (en) * | 2014-02-26 | 2014-06-18 | 天津大学 | Cloud particle spectrum distribution measuring method and system |
| CN104457614A (en) * | 2014-11-11 | 2015-03-25 | 南昌航空大学 | Stripe reflection three-dimensional measurement method based on binary stripe defocusing |
| CN105136743A (en) * | 2015-08-07 | 2015-12-09 | 华中科技大学 | Single particle scattering measurement method based on microfluidic chip particle capturing |
| CN105241640A (en) * | 2015-11-24 | 2016-01-13 | 常州工学院 | Device for measuring blue light weighted radiation intensity and method thereof |
Non-Patent Citations (5)
| Title |
|---|
| KEVIN B. APTOWICZ ET AL.: "Two-dimensional angular optical scattering patterns of microdroplets in the mid infrared with strong and weak absorption", 《OPTICS LETTERS》 * |
| Y. L. PAN ET AL.: "Characterizing and monitoring respiratory aerosols by light scattering", 《OPTICS LETTERS》 * |
| YONG-LE PAN ET AL.: "Rapid classification of aerosols by single-laser-shot fluorescence spectra and elastic scattering patterns", 《CONFERENCE ON LASERS AND ELECTRO-OPTICS》 * |
| 应强 等: "《洋山港淤泥特性和适航水深应用研究》", 31 December 2014, 海洋出版社 * |
| 张科 等: "中性滤光片提高生化检测动态范围的研究", 《光通信技术》 * |
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| CN108145606A (en) * | 2017-11-23 | 2018-06-12 | 浙江工业大学 | Polishing fluid bulky grain real time on-line monitoring device in a kind of polishing process |
| CN108145606B (en) * | 2017-11-23 | 2023-07-21 | 浙江工业大学 | Real-time online monitoring device for large particles of polishing solution in polishing process |
| CN110967284A (en) * | 2019-05-17 | 2020-04-07 | 南京工业大学 | Double-channel bioaerosol real-time monitor |
| CN110208169A (en) * | 2019-07-10 | 2019-09-06 | 湖北中医药高等专科学校 | A kind of method of scatter light polarization state data in measurement polarizers of big angle scope |
| CN110907316A (en) * | 2019-12-16 | 2020-03-24 | 中国科学院大气物理研究所 | Light path system for single particle forward and backward scattering and depolarization ratio measurement |
| CN111272110A (en) * | 2020-03-04 | 2020-06-12 | 上海交通大学 | Multiple scattering transmitted light angle distribution measuring device based on thin plate medium |
| CN111272110B (en) * | 2020-03-04 | 2021-08-10 | 上海交通大学 | Multiple scattering transmitted light angle distribution measuring device based on thin plate medium |
| CN111812000A (en) * | 2020-07-02 | 2020-10-23 | 清华大学深圳国际研究生院 | Detection device and method for suspended single particles |
| CN111812000B (en) * | 2020-07-02 | 2024-03-22 | 清华大学深圳国际研究生院 | Detection device and method for suspended single particles |
| CN112903543A (en) * | 2021-01-20 | 2021-06-04 | 华中科技大学 | Light scattering-based aerosol particle ellipticity measurement method and system |
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