CN109724901A - A kind of micro particles optical detection apparatus - Google Patents
A kind of micro particles optical detection apparatus Download PDFInfo
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- CN109724901A CN109724901A CN201811633456.6A CN201811633456A CN109724901A CN 109724901 A CN109724901 A CN 109724901A CN 201811633456 A CN201811633456 A CN 201811633456A CN 109724901 A CN109724901 A CN 109724901A
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- micro particles
- detection apparatus
- reflection
- optical detection
- light beam
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- 230000003287 optical effect Effects 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 239000011859 microparticle Substances 0.000 title claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 44
- 238000009792 diffusion process Methods 0.000 claims abstract description 30
- 238000007493 shaping process Methods 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000005357 flat glass Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 108010034145 Helminth Proteins Proteins 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000000013 helminth Species 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention provides a kind of micro particles detection devices, the micro particles detection device is to detect particle size based on Mie theory, and the reflection component by being arranged in laser main line optical path reflects main laser beam outside diffusion beam propagation optical path, so that there was only Michaelis scattering light in the optical signal being collected into last optical receiver.The present apparatus is by reducing interference of the main laser to detection signal, the noise and raising signal-to-noise ratio during detection of particles can be reduced, record and feature identification are carried out to the scattering pattern of the Mie scattering light of acquisition, which are marked, to improve the precision of detection of particles.Researcher can be made fast and accurately to detect particle.
Description
Technical field
The present invention relates to laser technology fields, and in particular to a kind of micro particles optical detection apparatus.
Background technique
Detection of particles technology life every aspect using more and more extensive, from measurement chemicals to water helminth
Detection.Mainly reagent is used to be detected for the detection technique of the helminth in water at present, detection speed is slower, common
Detection of particles under microscope, it is generally recognized that differentiated, while the visual field detected is smaller.The particle detection having at present,
It can be using light scattering method measurement grain diameter, complex refractivity index and concentration parameter, by the physical and chemical parameter of particle come to particle
It is determined, but current device has problems in that and also adulterates main laser in the scattering light of acquisition, this, which is affected, obtains
, there are severe deviations to the granule size of final particle in the accuracy of the particle information obtained.In order to reduce noise and improve noise
Than, so that researcher is quickly detected particle, thus need a kind of micro particles optical detection apparatus.
Summary of the invention
It is an object of the invention in view of the above drawbacks of the prior art, provide a kind of micro particles optical detection apparatus,
It aims to solve the problem that the current device for being detected micro particles based on Mie theory is existed due to being doped with main laser, causes most
The optical signal inaccuracy being collected into afterwards, leads to the problem of the inaccuracy of particle size.
The purpose of the present invention can be realized by technical measures below:
The present invention provides a kind of micro particles optical detection apparatus, which includes:
Laser, the laser are used to be emitted the laser beam along first direction propagation to irradiate detected particle；
Set on the laser emitting mouth, the Photodiffusion component for placing detected particle, the laser beam irradiates institute
Detected particle is stated, Mie scattering occurs and forms diffusion light beam；
Optical shaping component, for carrying out shaping to the diffusion light beam；
Optical receiver, for receiving the diffusion light beam after shaping；And
Reflection component in the diffusion beam propagation optical path, is propagated for reflecting in diffusion light beam along first direction
Light beam guiding the light beam to outside the diffusion beam propagation optical path.
Further, the Photodiffusion component is particle channel.
Further, the optical shaping component includes:
Condensing lens between the particle channel and the reflection component, for being converged to the diffusion light beam
It is poly-.
Further, the optical shaping component further include:
Visual field between the reflection component and the optical receiver adjusts lens, for the diffusion light beam
Emergent light angle is adjusted.
Further, the reflection component includes reflection-absorption point and plate glass, and the reflection-absorption point is mounted on institute
It states on plate glass, the surface of the reflection-absorption point is reflecting surface.
Further, the surface of the reflection-absorption point is 45 degree of inclined-planes.
Further, the focus of the laser beam is located on the surface of the reflection-absorption point.
Further, the optical receiver is camera, for obtaining the scatter diagram of the diffusion light beam after shaping.
Further, which further includes analysis module, for judging the detected particle according to the scatter diagram
Type.
The beneficial effects of the present invention are a kind of micro particles detection device is provided, which is base
Detect particle size in Mie theory, and the reflection component by being arranged in laser main line optical path will lead it is sharp
Light beam reflects outside diffusion beam propagation optical path, so that only having Michaelis to dissipate color in the optical signal being collected into last optical receiver
Light.The present apparatus can reduce noise and raising letter during detection of particles by reducing interference of the main laser to detection signal
It makes an uproar and compares, record and feature identification are carried out to the scattering pattern of the Mie scattering light of acquisition, which are marked, to improve
The precision of detection of particles.Researcher can be made fast and accurately to detect particle.
Detailed description of the invention
Fig. 1 is the structure chart of the micro particles detection device of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
Invention is further described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
In order to keep the narration of this disclosure more detailed with it is complete, below for embodiments of the present invention and specific real
It applies example and proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment
In cover multiple specific embodiments feature and to construction with operate these specific embodiments method and step it is suitable with it
Sequence.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.
The present invention provides a kind of micro particles optical detection apparatus, which includes:
Laser, the laser are used to be emitted the laser beam along first direction propagation to irradiate detected particle；
Set on the laser emitting mouth, the Photodiffusion component for placing detected particle, the laser beam irradiates institute
Detected particle is stated, Mie scattering occurs and forms diffusion light beam；
Optical shaping component, for carrying out shaping to the diffusion light beam；
Optical receiver, for receiving the diffusion light beam after shaping；And
Reflection component in the diffusion beam propagation optical path, is propagated for reflecting in diffusion light beam along first direction
Light beam guiding the light beam to outside the diffusion beam propagation optical path.
Micro particles detection device of the invention be particle size is detected based on Mie theory, and by swash
The reflection component being arranged in light device main line optical path reflects main laser beam outside diffusion beam propagation optical path, so that last light
There was only Michaelis scattering light in the optical signal being collected into receiver.Interference of the present apparatus by reduction main laser to detection signal,
The noise and raising signal-to-noise ratio during detection of particles can be reduced, the scattering pattern of the Mie scattering light of acquisition is recorded
And feature identification, which is marked, to improve the precision of detection of particles.It can make researcher fast and accurately
Detect particle.
Fig. 1 shows the structure chart of the micro particles detection device of the embodiment of the present invention, referring to Fig. 1, Fig. 1 includes laser
Device 1, laser 1 can shoot laser beam 7, particle channel 2, place be detected particle Photodiffusion component, laser beam 7 irradiate quilt
Particle is detected, Mie scattering occurs and forms diffusion light beam 8, it is optical shaping component that focus lamp 3 and visual field, which adjust lens 6, is gathered
Burnt mirror 3 be used for Michaelis scattering light Shu Jinhang converge, visual field adjust lens 6 be used for it is described diffusion light beam emergent light angle into
Row is adjusted, and reflection component 4 includes reflection-absorption point 41 and plate glass 42, and reflection-absorption point 41 is mounted on the plate glass
On, the surface of reflection-absorption point 41 is the reflecting surface on 45 degree inclined-planes, and camera 5 is optical receiver, for obtaining the diffusion after shaping
The scattering pattern of the scatter diagram of light beam, camera 5 can be analyzed by data analysis module 9.
According to Fig. 1 micro particles detection device, when 1 shoot laser beam 7 of laser beam is irradiated in the grain placed in particle channel 2
Mie scattering will occur for the period of the day from 11 p.m. to 1 a.m, the particle in particle channel, and the Mie scattering light beam 8 and laser beam 7 of formation pass through focus lamp 3 together
After collect, collecting passage in transit reflection component 4, while Zhu's laser beam 7 is penetrated by the reflection-absorption point 41 of reflection component 4
The reflective surface for absorbing 45 degree of inclined-planes of point 41 goes out to propagate optical path, and Mie scattering light continues to converge, saturating by market regulation
Mie scattering light beam regulation is entered camera 5 by mirror 6, after camera 5 can also linking parsing module 9, analysis module 9 obtains according to camera 5
The particle is marked in the record and feature identification of the scattering pattern obtained, judges the type for being detected particle.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of micro particles optical detection apparatus, which is characterized in that the micro particles optical detection apparatus includes:
Laser, the laser are used to be emitted the laser beam along first direction propagation to irradiate detected particle；
Set on the laser emitting mouth, the Photodiffusion component for placing detected particle, the laser beam irradiates the quilt
Particle is detected, Mie scattering occurs and forms diffusion light beam；
Optical shaping component, for carrying out shaping to the diffusion light beam；
Optical receiver, for receiving the diffusion light beam after shaping；And
Reflection component in the diffusion beam propagation optical path, for reflecting the light propagated in diffusion light beam along first direction
Beam is guiding the light beam to outside the diffusion beam propagation optical path.
2. micro particles optical detection apparatus as described in claim 1, which is characterized in that the Photodiffusion component is logical for particle
Road.
3. micro particles optical detection apparatus as claimed in claim 2, which is characterized in that the optical shaping component includes:
Condensing lens between the particle channel and the reflection component, for being converged to the diffusion light beam.
4. micro particles optical detection apparatus as claimed in claim 3, which is characterized in that the optical shaping component also wraps
It includes:
Visual field between the reflection component and the optical receiver adjusts lens, for the outgoing to the diffusion light beam
Angular is adjusted.
5. the micro particles optical detection apparatus as described in claims 1 or 2 or 3, which is characterized in that the reflection component includes
Reflection-absorption point and plate glass, the reflection-absorption point are mounted on the plate glass, the surface of the reflection-absorption point
For reflecting surface.
6. micro particles optical detection apparatus as claimed in claim 5, which is characterized in that the surface of the reflection-absorption point is
45 degree of inclined-planes.
7. micro particles optical detection apparatus as claimed in claim 5, which is characterized in that the focus of the laser beam is located at institute
On the surface for stating reflection-absorption point.
8. micro particles optical detection apparatus as claimed in claim 3, which is characterized in that the optical receiver is camera, is used
The scatter diagram of diffusion light beam after obtaining shaping.
9. micro particles optical detection apparatus as claimed in claim 8, which is characterized in that the device further includes analysis module,
For judging the type of the detected particle according to the scatter diagram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633456.6A CN109724901B (en) | 2018-12-29 | 2018-12-29 | Micron particle optical detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633456.6A CN109724901B (en) | 2018-12-29 | 2018-12-29 | Micron particle optical detection device |
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| CN109724901A true CN109724901A (en) | 2019-05-07 |
| CN109724901B CN109724901B (en) | 2020-10-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021097910A1 (en) * | 2019-11-19 | 2021-05-27 | 江苏苏净集团有限公司 | Detection device and method for tiny particles in liquid |
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| GB2025041A (en) * | 1978-06-27 | 1980-01-16 | Domtar Inc | Graininesssensor |
| CN2563570Y (en) * | 2002-08-28 | 2003-07-30 | 宝山钢铁股份有限公司 | Laser dust concentration detector |
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| CN101846621A (en) * | 2010-05-17 | 2010-09-29 | 中国科学院长春光学精密机械与物理研究所 | Label-free leaky-mode optical fiber evanescent biosensor system and optical fiber manufacturing method |
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2018
- 2018-12-29 CN CN201811633456.6A patent/CN109724901B/en not_active Expired - Fee Related
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| GB2025041A (en) * | 1978-06-27 | 1980-01-16 | Domtar Inc | Graininesssensor |
| CN2563570Y (en) * | 2002-08-28 | 2003-07-30 | 宝山钢铁股份有限公司 | Laser dust concentration detector |
| CN1588092A (en) * | 2004-08-18 | 2005-03-02 | 浙江大学 | Micro velocity measuring system of micro flow field particle image |
| JP2008062562A (en) * | 2006-09-08 | 2008-03-21 | Kimoto & Co Ltd | Film for display |
| CN101349804A (en) * | 2007-07-18 | 2009-01-21 | Asml控股股份有限公司 | Catadioptric optical system for scatterometry |
| CN101846621A (en) * | 2010-05-17 | 2010-09-29 | 中国科学院长春光学精密机械与物理研究所 | Label-free leaky-mode optical fiber evanescent biosensor system and optical fiber manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021097910A1 (en) * | 2019-11-19 | 2021-05-27 | 江苏苏净集团有限公司 | Detection device and method for tiny particles in liquid |
| US12038366B2 (en) | 2019-11-19 | 2024-07-16 | Jiangsu Sujing Group Co., Ltd. | Detection device and method for tiny particles in liquid |
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| CN109724901B (en) | 2020-10-13 |
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