CN109060613A - A kind of device that infrared holography is used for particle field measurement - Google Patents
A kind of device that infrared holography is used for particle field measurement Download PDFInfo
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- CN109060613A CN109060613A CN201810946759.7A CN201810946759A CN109060613A CN 109060613 A CN109060613 A CN 109060613A CN 201810946759 A CN201810946759 A CN 201810946759A CN 109060613 A CN109060613 A CN 109060613A
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- 239000002245 particle Substances 0.000 title claims abstract description 111
- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 238000001093 holography Methods 0.000 title claims abstract description 20
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 41
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims description 28
- 230000001427 coherent effect Effects 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
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- 239000000446 fuel Substances 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- 239000000779 smoke Substances 0.000 description 1
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- 230000005514 two-phase flow Effects 0.000 description 1
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- G—PHYSICS
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- 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
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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
- G01N15/10—Investigating individual particles
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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
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
- G01N2015/0233—Investigating particle size or size distribution by optical means using imaging; using holography using holography
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Abstract
本发明公开了一种将红外全息用于粒子场测量的装置，属于红外全息应用领域。所述装置包括：红外激光器、红外全反镜Ⅰ、红外分束镜Ⅰ、红外分束镜Ⅱ、红外全反镜Ⅱ、红外分束镜Ⅲ、红外分束镜Ⅳ、红外全反镜Ⅲ、红外分束镜Ⅴ、红外CCDⅠ、红外CCDⅡ、红外扩束镜Ⅰ、红外准直镜Ⅰ、红外扩束镜Ⅱ、红外准直镜Ⅱ、红外扩束镜Ⅲ、红外准直镜Ⅲ、红外扩束镜Ⅳ、红外准直镜Ⅳ、锗平晶Ⅰ等，本发明所述装置用于粒子场的测量，在不干扰物场条件下，可以记录到粒子场的三维全场分布，从而得到粒子的尺寸、形状、位置、速度和加速度等信息，提高了对于粒子场检测的成像质量和检测结果。
The invention discloses a device using infrared holography for particle field measurement, belonging to the field of infrared holography application. The device includes: infrared laser, infrared total reflection mirror I, infrared beam splitter I, infrared beam splitter II, infrared total reflection II, infrared beam splitter III, infrared beam splitter IV, infrared total reflection III, Infrared beam splitter Ⅴ, infrared CCD Ⅰ, infrared CCD Ⅱ, infrared beam expander Ⅰ, infrared collimator Ⅰ, infrared beam expander Ⅱ, infrared collimator Ⅱ, infrared beam expander Ⅲ, infrared collimator Ⅲ, infrared expander Beam mirror IV, infrared collimating mirror IV, germanium flat crystal I, etc., the device of the present invention is used for the measurement of the particle field. Under the condition of not disturbing the object field, it can record the three-dimensional full-field distribution of the particle field, so as to obtain the particle field Information such as the size, shape, position, velocity, and acceleration of particles can improve the imaging quality and detection results of particle field detection.
Description
Technical field
The invention discloses a kind of devices that infrared holography is used for particle field measurement, belong to infrared holographic applications field.
Background technique
In the research in the fields such as fuel combustion, coal smoke measurement, two phase flow, the breakup of drop, environmental pollution, frequently with laser
Holographic technique carries out the measurement of Particle Field, its advantage is that not interfering object field, the three-dimensional whole field distribution of Particle Field can be recorded, thus
Obtain the information such as the size, shape, velocity and acceleration of particle.But in these engineering research fields, drop and solid particle
Density is big, size is small, certain difficulty is brought to experiment measuring technique, as high density influences transmitance, the small size grain of light
Son is difficult to differentiate.In the research of previous Particle Field, because being limited to the recording medium of hologram, visible light wave range is generallyd use
Laser carries out in-line holographic measurement, so that the resolution ratio of hologram record is lower, influences Particle Field measurement accuracy and result.With
The development of charge-coupled device (CCD) infrared detector and infrared photosensitive polymer, it is contemplated that using different wave length swash
Light carries out holographic experiment measurement and further develops holographic technique to improve the precision of object field measurement, and expands its application neck
Domain.
It is same that a kind of infrared laser for measuring Particle Field is disclosed in " the infrared laser in-line holographic technology of measurement ion field "
Axis holographic technique uses emulation experiment and using GEM film as Particle Field two ways, and contrast verification is infrared holographic to be used to detect
It is used for the advantage of particle field detecting in Particle Field when the particle of particle rank size relative to visible light holography.But it only stops
Theoretical research stage is stayed in, and actual Particle Field is present in three-dimensional space, mutually blocks between a large amount of particle and particle, again
It is folded, that is to say, that if going to detect true Particle Field by experimental method described in its document, it is a certain to can only obtain Particle Field
The information of the particles field of starting section, and the real information of other particles covered by starting section can not be obtained, it is most of in Particle Field
The information of particle obtain less than.
Summary of the invention
The purpose of the present invention is to provide a kind of devices that infrared holography is used for particle field measurement, have not only played infrared
Holography will have the advantages that higher material precision for the diagnosis of small particle, high-density particles field, and pass through Particle Field two
The acquisition of information and analytical calculation of a dimension, so as to obtain the information of all particles in entire Particle Field.
The device of the present invention that infrared holography is used for particle field measurement, including including infrared laser 1, infrared be all-trans
It is mirror I 2, infrared beam splitter I 3, infrared beam splitter II 4, infrared total reflective mirror II 5, infrared beam splitter III 6, infrared beam splitter IV 7, red
Outer total reflective mirror III 8, infrared beam splitter V 9, infrared CCD I 10, infrared CCD II 11, infrared beam expanding lens I 12, infrared collimating mirror I 13,
It is infrared beam expanding lens II 14, infrared collimating mirror II 15, infrared beam expanding lens III 16, infrared collimating mirror III 17, infrared beam expanding lens IV 18, red
Outer collimating mirror IV 19, germanium optical flat I 20, germanium optical flat II 21, computer 22, internal layer shell 23, outer layer shell 24, Particle Field to be measured
25, data line I 26, data line II 27, infrared laser 1 launch infrared laser and reflex to infrared point by infrared total reflective mirror I 2
Infrared laser beam is divided into two bundles orthogonal light by beam mirror I 3, infrared beam splitter I 3, its after I 3 beam splitting of infrared beam splitter
In a branch of infrared laser by being further divided into the orthogonal light of two beams after infrared beam splitter II 4, after II 4 beam splitting of infrared beam splitter
Wherein a branch of infrared laser after infrared beam expanding lens I 12 expands again through infrared collimating mirror I 13 collimation become infrared directional light after
It is perforated through Particle Field 25 to be measured, visible light is filtered off using germanium optical flat II 21, is finally radiated on infrared beam splitter V 9, this beam
Infrared laser beam is referred to as the infrared object beam of the second beam；Other a branch of infrared laser after II 4 beam splitting of infrared beam splitter is through red
Outer total reflective mirror II 5 is reflected into infrared beam expanding lens II 14, quasi- through infrared collimation lens II 15 again after infrared beam expanding lens II 14 expands
Directly become infrared directional light, is finally radiated on infrared beam splitter III 6, this beam infrared laser beam is referred to as the infrared reference of the first beam
Light beam；
Other a branch of infrared laser after I 3 beam splitting of infrared beam splitter is mutually hung down by being further divided into two beams after infrared beam splitter IV 7
Straight light, wherein a branch of infrared laser after IV 7 beam splitting of infrared beam splitter is after infrared beam expanding lens III 16 expands again through infrared
The collimation of collimating mirror III 17 is perforated through Particle Field 25 to be measured after becoming infrared directional light, filters off visible light using germanium optical flat I 20, most
After be radiated on infrared beam splitter III 6, this beam infrared laser beam is referred to as the infrared object beam of the first beam；Through infrared beam splitter IV 7
Other a branch of infrared laser after beam splitting is reflected into infrared beam expanding lens IV 18 through infrared total reflective mirror III 8, through infrared beam expanding lens IV 18
Become infrared directional light through the collimation of infrared collimation lens IV 19 again after expanding, is finally radiated on infrared beam splitter V 9, this Shu Hong
Outer laser beam is referred to as the infrared reference beam of the second beam, and the infrared object beam of the first beam is mutually perpendicular to the infrared object beam of the second beam,
To obtain the information of two dimensions of particle in Particle Field；
The angle of infrared beam splitter III 6 meets the infrared object beam of the first beam and the infrared two beam infrared light of reference beam of the first beam is number
Word holography coherent beam, the coherent superposition on infrared beam splitter III 6 are finally received and are recorded by infrared CCD I 10；Infrared beam splitting
The angle of mirror V 9 meets the infrared object beam of the second beam and the infrared two beam infrared beam of reference beam of the second beam is relevant for digital hologram
Light beam, the coherent superposition on infrared beam splitter V 9 are finally received and are recorded by infrared CCD II 11；Infrared CCD I 10 and infrared
CCD II 11 is received and the infrared holographic interference information of record passes through data line I 26 and data line II 27 is transferred to computer 22, is counted
Calculation machine 22 reproduces size, the shape, position of particle in Particle Field in hologram by reproduction to two width holograms and two width of comparison
It sets, the information such as velocity and acceleration carry out record processing and analytical calculation.
Preferably, whole device is protected and is fixed with lighttight shell, and shell is divided into internal layer shell 23 and outer layer shell
(24), shell is integrated inside and outside；Circular hole there are four setting on 4 sides of internal layer shell 23, is bumped into infrared collimation respectively
Lens I 13, infrared collimation lens III 17 and germanium optical flat I 20, germanium optical flat II 21, the beam-expanding collimation for being respectively used to infrared laser beam go out
The interference of visible light is penetrated, received and filtered off, image quality is improved.
Preferably, the infrared laser that infrared laser 1 of the present invention is launched is 0.8 ~ 2 in infrared atmospheric window mouth wave band
μm or 3 ~ 5 μm or 8 ~ 13 μ ms in wave source, to avoid in air propagate when rapid decay.
Preferably, infrared beam splitter I 3 of the present invention, infrared beam splitter II 4, infrared beam splitter III 6, infrared beam splitter
IV 7, infrared beam splitter V 9 is germanium beam splitter, silicon beam splitter or glass beam splitter.
Preferably, infrared beam expanding lens I 12 of the present invention, infrared beam expanding lens II 14, infrared beam expanding lens III 16, infrared expand
Mirror IV 18 is germanium beam expanding lens, silicon beam expanding lens or glass beam expanding lens.
Preferably, infrared collimating mirror I 13 of the present invention, infrared collimating mirror II 15, infrared collimating mirror III 17, infrared collimation
Mirror IV 19 is germanium collimating mirror, silicon collimating mirror or glass collimating mirror.
Preferably, germanium optical flat I 20 of the present invention, germanium optical flat II 21 are the germanium mirror that former and later two surfaces are parallel to each other, and are risen
Filter the effect of visible light.
Preferably, the infrared object beam of the first beam of the present invention and the infrared two beam infrared beam of reference beam of the first beam are passed through
The light path crossed is identical, and the light path that the infrared object beam of the second beam and the infrared reference beam of the second beam are passed through is identical, so that interference is imitated
Fruit reaches best and reduces the requirement to 1 coherence length of infrared laser.
The principle of the present invention: it is received respectively to Particle Field to be measured using CCD I 10 and infrared CCD II 11 transmitted through the come
A branch of infrared object beam interference with the infrared reference beam of the first beam formed the first width hologram and the infrared object beam of the second beam
Interference with the infrared reference beam of the second beam formed the second width hologram, infrared CCD I 10 and infrared CCD II 11 will receive
Infrared holographic interference pattern computer 22 is transferred to by data line I, data line II, complete to clap synchronization by computer 22
The record for the two width holograms taken the photograph, reproduction, comparative analysis, obtain synchronization shooting two width holograms in particle size,
The characteristic values such as shape, position go to identify according to the similarity degree of the characteristic value of particle in two width holograms of synchronization shooting
Whether two particles in two width holograms are the same particles in Particle Field, and record the characteristic value and identification knot of particle
Fruit, in the hologram of different moments shooting, if a certain particle is only arrived by the CCD Hologram shot, because of two width
The infrared object beam of two beams when Hologram is orthogonal, so no matter how the particle in Particle Field mutually blocks,
Any one particle always can be by wherein infrared holographic light path can recorde to two width of different moments shooting are holographic all the way
The characteristic value of particle in figure is compared one by one, to identify the same particle in two width holograms, is realized to all grains
Son can take, and so as to realize the real-time measurement and record of all particles of Particle Field, computer 22 controls infrared CCD
I 10 and infrared CCD II 11 shoot a Particle Field hologram to be measured, the size, shape of particle, position in Particle Field to be measured can be obtained
It the information such as sets, is continuously shot two Particle Field holograms to be measured, the information such as speed of particle in Particle Field to be measured can be obtained, continuously
Three Particle Field holograms to be measured are shot, the information such as acceleration of particle in Particle Field to be measured can be obtained and finally obtained in Particle Field
The information such as size, shape, position, the speed, acceleration of particle.
Beneficial effects of the present invention:
(1) whole device of the present invention is protected and is fixed with lighttight shell, only stays four circular hole positions to be bumped on device infrared
Collimation lens I 13, infrared collimation lens III 17 and germanium optical flat I 20, germanium optical flat II 21, be respectively used to infrared laser beam expands standard
Straight outgoing, the interference for receiving and filtering off visible light, improve image quality.
(2) be used for particle field detecting using apparatus of the present invention, can in quick obtaining Particle Field to be measured particle size, shape
The information such as shape, position, speed, acceleration, the especially diagnosis in small particle, high-density particles field better reflect its advantage,
It is used for particle field detecting compared to visible light wave range laser hologram, there is higher resolution ratio, better Particle Field can be obtained
Detection data.
(3) the infrared laser in-line holographic technology of prior art measurement Particle Field, which can only obtain, obtains a certain preceding section of Particle Field
Face particle information can not obtain all particle informations of entire Particle Field, be used for particle field detecting using apparatus of the present invention, can obtain
Take the information of all particles of complete Particle Field.
Detailed description of the invention
Fig. 1 is the device of the invention structural schematic diagram.
In figure: 1- infrared laser；The infrared total reflective mirror I of 2-；3- infrared beam splitter I；4- infrared beam splitter II；5- is infrared
Total reflective mirror II；6- infrared beam splitter III；7- infrared beam splitter IV；The infrared total reflective mirror III of 8-；9- infrared beam splitter V；10- is infrared
CCDⅠ；11- infrared CCD II；The infrared beam expanding lens I of 12-；The infrared collimating mirror I of 13-, the infrared beam expanding lens II of 14-；The infrared collimating mirror of 15-
Ⅱ；The infrared beam expanding lens III of 16-；The infrared collimating mirror III of 17-；The infrared beam expanding lens IV of 18-；The infrared collimating mirror IV of 19-；20- germanium optical flat
Ⅰ；21- germanium optical flat II；22- computer；23- internal layer shell；24- outer layer shell；25- Particle Field to be measured；26- data line I；27-
Data line II.
Specific embodiment
It is further to a specific embodiment of the invention below in conjunction with attached drawing in order to which operating mode of the invention is elaborated
It is illustrated, Fig. 1 is the device of the invention structural schematic diagram, it should be understood that the specific embodiments described herein are only used for
Explain the present invention, but the present invention is not limited in the embodiment.
Embodiment 1
A kind of device that infrared holography is used for particle field measurement, including including infrared laser 1, infrared total reflective mirror I 2, infrared
Beam splitter I 3, infrared beam splitter II 4, infrared total reflective mirror II 5, infrared beam splitter III 6, infrared beam splitter IV 7, infrared total reflective mirror III
8, infrared beam splitter V 9, infrared CCD I 10, infrared CCD II 11, infrared beam expanding lens I 12, infrared collimating mirror I 13, infrared beam expanding lens
II 14, infrared collimating mirror II 15, infrared beam expanding lens III 16, infrared collimating mirror III 17, infrared beam expanding lens IV 18, infrared collimating mirror IV
19, germanium optical flat I 20, germanium optical flat II 21, computer 22, internal layer shell 23, outer layer shell 24, Particle Field to be measured 25, data line I
26, data line II 27, infrared laser 1 launches infrared laser and reflexes to infrared beam splitter I 3 by infrared total reflective mirror I 2, red
Infrared laser beam is divided into two bundles orthogonal light by outer beam splitter I 3, wherein a branch of infrared after I 3 beam splitting of infrared beam splitter
Laser is further divided into the orthogonal light of two beams after passing through infrared beam splitter II 4, wherein a branch of after II 4 beam splitting of infrared beam splitter
Infrared laser is perforated through after infrared collimating mirror I 13 collimation becomes infrared directional light to be measured again after infrared beam expanding lens I 12 expands
Particle Field 25 filters off visible light using germanium optical flat II 21, is finally radiated on infrared beam splitter V 9, this beam infrared laser beam
The infrared object beam of referred to as the second beam；Other a branch of infrared laser after II 4 beam splitting of infrared beam splitter is through infrared total reflective mirror II 5
It is reflected into infrared beam expanding lens II 14, becomes infrared flat through the collimation of infrared collimation lens II 15 again after infrared beam expanding lens II 14 expands
Row light is finally radiated on infrared beam splitter III 6, this beam infrared laser beam is referred to as the infrared reference beam of the first beam；
Other a branch of infrared laser after I 3 beam splitting of infrared beam splitter is mutually hung down by being further divided into two beams after infrared beam splitter IV 7
Straight light, wherein a branch of infrared laser after IV 7 beam splitting of infrared beam splitter is after infrared beam expanding lens III 16 expands again through infrared
The collimation of collimating mirror III 17 is perforated through Particle Field 25 to be measured after becoming infrared directional light, filters off visible light using germanium optical flat I 20, most
After be radiated on infrared beam splitter III 6, this beam infrared laser beam is referred to as the infrared object beam of the first beam；Through infrared beam splitter IV 7
Other a branch of infrared laser after beam splitting is reflected into infrared beam expanding lens IV 18 through infrared total reflective mirror III 8, through infrared beam expanding lens IV 18
Become infrared directional light through the collimation of infrared collimation lens IV 19 again after expanding, is finally radiated on infrared beam splitter V 9, this Shu Hong
Outer laser beam is referred to as the infrared reference beam of the second beam, and the infrared object beam of the first beam is mutually perpendicular to the infrared object beam of the second beam,
To obtain the information of two dimensions of particle in Particle Field；
The angle of infrared beam splitter III 6 meets the infrared object beam of the first beam and the infrared two beam infrared light of reference beam of the first beam is number
Word holography coherent beam, the coherent superposition on infrared beam splitter III 6 are finally received and are recorded by infrared CCD I 10；Infrared beam splitting
The angle of mirror V 9 meets the infrared object beam of the second beam and the infrared two beam infrared beam of reference beam of the second beam is relevant for digital hologram
Light beam, the coherent superposition on infrared beam splitter V 9 are finally received and are recorded by infrared CCD II 11；Infrared CCD I 10 and infrared
CCD II 11 is received and the infrared holographic interference information of record passes through data line I 26 and data line II 27 is transferred to computer 22, is counted
Calculation machine 22 reproduces size, the shape, position of particle in Particle Field in hologram by reproduction to two width holograms and two width of comparison
It sets, the information such as velocity and acceleration carry out record processing and analytical calculation (as shown in Figure 1).
The infrared laser that infrared laser 1 is launched described in the present embodiment is 0.8 ~ 2 μm of model in infrared atmospheric window mouth wave band
Interior wave source is enclosed, to avoid rapid decay when propagating in air.
It is infrared beam splitter I 3 in the present embodiment, infrared beam splitter II 4, infrared beam splitter III 6, infrared beam splitter IV 7, infrared
Beam splitter V 9 is germanium beam splitter；Infrared beam expanding lens I 12, infrared beam expanding lens II 14, infrared beam expanding lens III 16, infrared beam expanding lens IV
18 be germanium beam expanding lens.Infrared collimating mirror I 13, infrared collimating mirror II 15, infrared collimating mirror III 17, infrared collimating mirror IV 19 are that germanium is quasi-
Straight mirror.Germanium optical flat I 20, germanium optical flat II 21 are the germanium mirror that former and later two faces are parallel to each other, and play a part of to filter visible light.
The infrared object beam of first beam described in the present embodiment and the infrared two beam infrared beam of reference beam of the first beam are passed through
Light path it is identical, the light path that the infrared object beam of the second beam and the infrared reference beam of the second beam are passed through is identical, so that interference effect
Reach best and reduces the requirement to 1 coherence length of infrared laser.
During specifically used: Particle Field is ground after the frame rate of infrared CCD I 10 and infrared CCD II 11 will meet continuous clap
The time interval for studying carefully middle Particle Field variation front and back requires, and the spectral response range of infrared CCD I 10 and infrared CCD II 11 includes red
Particle size requires institute in the resolution ratio and surveyed Particle Field of the wavelength of outer laser 1, infrared CCD I 10 and infrared CCD II 11
Match, the selection of the sensitivity of infrared CCD I 10 and infrared CCD II 11 needs and infrared laser power size and preset measurement
The distance range of Particle Field matches, to reach preferable imaging effect.
Embodiment 2
The present embodiment structure is same as Example 1, and difference is:
Whole device is protected and is fixed with lighttight shell, and shell is divided into internal layer shell 23 and outer layer shell 24, inside and outside
Shell is integrated, is empty inside rectangular-ambulatory-plane similar to the square structure of " returning " font；On 4 sides of internal layer shell 23
If there are four circular holes, it is bumped into infrared collimation lens I 13, infrared collimation lens III 17 and germanium optical flat I 20, germanium optical flat II 21 respectively,
It is respectively used to the beam-expanding collimation outgoing of infrared laser beam, receives and filter off the interference of visible light, improve image quality.It is described red
The infrared laser that outer laser 1 is launched is the wave source in infrared atmospheric window mouth wave band in 8 ~ 13 μ ms, to avoid in air
Rapid decay when middle propagation.
It is infrared beam splitter I 3, infrared beam splitter II 4 described in the present embodiment, infrared beam splitter III 6, infrared beam splitter IV 7, red
Outer beam splitter V 9 is glass beam splitter.Infrared beam expanding lens I 12, infrared beam expanding lens III 16, infrared expands infrared beam expanding lens II 14
Mirror IV 18 is silicon beam expanding lens.Infrared collimating mirror I 13, infrared collimating mirror II 15, infrared collimating mirror III 17, infrared collimating mirror IV 19 are
Silicon collimating mirror.
The infrared object beam of first beam described in the present embodiment and the infrared two beam infrared beam of reference beam of the first beam are passed through
Light path it is identical, the light path that the infrared object beam of the second beam and the infrared reference beam of the second beam are passed through is identical, so that interference effect
Reach best and reduces the requirement to 1 coherence length of infrared laser.
Claims (8)
1. a kind of device that infrared holography is used for particle field measurement, it is characterised in that: including infrared laser (1), infrared complete
It is anti-mirror I (2), infrared beam splitter I (3), infrared beam splitter II (4), infrared total reflective mirror II (5), infrared beam splitter III (6), infrared
Beam splitter IV (7), infrared total reflective mirror III (8), infrared beam splitter V (9), infrared CCD I (10), infrared CCD II (11), infrared expansion
Beam mirror I (12), infrared collimating mirror I (13), infrared beam expanding lens II (14), infrared collimating mirror II (15), infrared beam expanding lens III (16),
Infrared collimating mirror III (17), infrared beam expanding lens IV (18), infrared collimating mirror IV (19), germanium optical flat I (20), germanium optical flat II (21),
Computer (22), internal layer shell (23), outer layer shell (24), Particle Field to be measured (25), data line I (26), data line II (27),
Infrared laser (1) launches infrared laser and reflexes to infrared beam splitter I (3), infrared beam splitter I by infrared total reflective mirror I (2)
(3) infrared laser beam is divided into two bundles orthogonal light, wherein a branch of infrared laser after infrared beam splitter I (3) beam splitting
It is wherein a branch of after infrared beam splitter II (4) beam splitting by being further divided into the orthogonal light of two beams after infrared beam splitter II (4)
Infrared laser is perforated through after infrared collimating mirror I (13) collimation becomes infrared directional light again after infrared beam expanding lens I (12) expands
Particle Field (25) to be measured filters off visible light using germanium optical flat II (21), is finally radiated on infrared beam splitter V (9), this beam
Infrared laser beam is referred to as the infrared object beam of the second beam；Other a branch of infrared laser warp after infrared beam splitter II (4) beam splitting
Infrared total reflective mirror II (5) is reflected into infrared beam expanding lens II (14), saturating through infrared collimation again after infrared beam expanding lens II (14) expands
Mirror II (15) collimation becomes infrared directional light, is finally radiated on infrared beam splitter III (6), this beam infrared laser beam is referred to as the
A branch of infrared reference beam；
Other a branch of infrared laser after infrared beam splitter I (3) beam splitting is by being further divided into two beam phases after infrared beam splitter IV (7)
Mutually vertical light, wherein a branch of infrared laser after infrared beam splitter IV (7) beam splitting is after infrared beam expanding lens III (16) expands
Particle Field to be measured (25) are perforated through after infrared collimating mirror III (17) collimation becomes infrared directional light again, using germanium optical flat I
(20) visible light is filtered off, is finally radiated on infrared beam splitter III (6), this beam infrared laser beam is referred to as the infrared object light of the first beam
Beam；Other a branch of infrared laser after infrared beam splitter IV (7) beam splitting is reflected into infrared beam expanding lens through infrared total reflective mirror III (8)
IV (18) become infrared directional light through infrared collimation lens IV (19) collimation again after infrared beam expanding lens IV (18) expands, finally
It is radiated on infrared beam splitter V (9), this beam infrared laser beam is referred to as the infrared reference beam of the second beam, the infrared object light of the first beam
Beam is mutually perpendicular to the infrared object beam of the second beam；
The angle of infrared beam splitter III (6) meets the infrared object beam of the first beam and the infrared two beam infrared light of reference beam of the first beam is
Digital hologram coherent beam, the coherent superposition on infrared beam splitter III (6) are finally received and are recorded by infrared CCD I (10)；It is red
The angle of outer beam splitter V (9) meets the infrared object beam of the second beam and the infrared two beam infrared beam of reference beam of the second beam is number
Holographic coherent beam, the coherent superposition on infrared beam splitter V (9) are finally received and are recorded by infrared CCD II (11)；It is infrared
CCD I (10) and infrared CCD II (11) receive and the infrared holographic interference information of record passes through data line I (26) and data line II
(27) it is transferred to computer (22), computer (22) is by the reproduction to two width holograms and compares grain in two width reproduction hologram
The information such as the size, shape of particle, position, velocity and acceleration carry out record processing and analytical calculation in subfield.
2. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: whole device is not with
The shell of light transmission is protected and fixed, and shell is divided into internal layer shell (23) and outer layer shell (24), inside and outside shell be integrated；
Circular hole there are four setting on 4 sides of internal layer shell (23), is bumped into infrared collimation lens I (13), infrared collimation lens III respectively
(17) and germanium optical flat I (20), germanium optical flat II (21).
3. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: infrared laser
(1) infrared laser launched is 0.8 ~ 2 μm or 3 ~ 5 μm in infrared atmospheric window mouth wave band or the wave source in 8 ~ 13 μ ms.
4. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: the infrared beam splitting
Mirror I (3), infrared beam splitter II (4), infrared beam splitter III (6), infrared beam splitter IV (7), infrared beam splitter V (9), for germanium point
Shu Jing, silicon beam splitter or glass beam splitter.
5. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: described infrared to expand
Mirror I (12), infrared beam expanding lens II (14), infrared beam expanding lens III (16), infrared beam expanding lens IV (18) expand for germanium beam expanding lens, silicon
Mirror or glass beam expanding lens.
6. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: the infrared collimation
Mirror I (13), infrared collimating mirror II (15), infrared collimating mirror III (17), infrared collimating mirror IV (19) are germanium collimating mirror, silicon collimation
Mirror or glass collimating mirror.
7. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: the germanium optical flat I
(20), germanium optical flat II (21) is the germanium mirror that former and later two surfaces are parallel to each other.
8. infrared holography to be used for the device of particle field measurement according to claim 1, it is characterised in that: first beam is red
The light path that outer object beam and the infrared two beam infrared beam of reference beam of the first beam are passed through is identical, the infrared object beam of the second beam and
The light path that the infrared reference beam of two beams is passed through is identical.
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| CN111896496A (en) * | 2020-09-02 | 2020-11-06 | 昆明理工大学 | A device for detecting moisture content of Panax notoginseng slices using near-infrared holography |
| CN114136204A (en) * | 2021-12-09 | 2022-03-04 | 昆明理工大学 | Cultural relic three-dimensional shape reconstruction device and method for infrared digital holographic phase extraction |
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