CN206670797U - The spectrum imaging system of the high imaging resolution of transient state - Google Patents
The spectrum imaging system of the high imaging resolution of transient state Download PDFInfo
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- CN206670797U CN206670797U CN201720386955.4U CN201720386955U CN206670797U CN 206670797 U CN206670797 U CN 206670797U CN 201720386955 U CN201720386955 U CN 201720386955U CN 206670797 U CN206670797 U CN 206670797U
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Abstract
The utility model discloses a kind of spectrum imaging system of the high imaging resolution of transient state, including：Condenser lens, dispersing prism, multichannel linearly polarized wave guide plate, Glan Taylor rotatable polarizer, imaging lens group and imaging device；After the light wave of visible light wave range is assembled by condenser lens, it is divided by dispersing prism, the dispersing prism carries out angle automatching with multichannel linearly polarized wave guide plate so that the light of different wave length can sequentially enter the different passages in multichannel linearly polarized wave guide plate；The fiber waveguide of different wave length is entered Glan Taylor's rotatable polarizer by the multichannel linearly polarized wave guide plate, then the light wave of different wave length is carried out into light spectrum image-forming on an imaging device by imaging lens group.The utility model, which overcomes traditional transient state light spectrum image-forming, to be needed to reduce the limitation that image slices usually obtain fast imaging, can extremely fast complete spectral scan and imaging.
Description
Technical field
It the utility model is related to spectral imaging technology field, more particularly to a kind of transient state using high speed two-dimension filtering technique
The spectrum imaging system of high imaging resolution.
Background technology
Being conventionally used to the device of light spectrum image-forming has the one-dimensional filtering device based on prism grating pair, also there is liquid crystal filter part
With the two-dimensional filtering device such as acousto-optic grating filter part.One-dimensional filtering device will be not only scanned to spectrum, and be also needed to
Sample push away sweeping, and then carry out image mosaic can just obtain the complete two dimensional image of a width.And use liquid crystal filter part
Then sample need not can push away sweeping with acousto-optic grating filter part etc., only carry out spectral scan.However, these two
The spectral scan speed of dimension filtering device is relatively slow, if carrying out the high light spectrum image-forming below 5nm resolution ratio, scanning needs to count
Hundred milliseconds could complete to the several seconds.Monitoring capability which greatly limits spectral imaging technology to dynamic sample, also inconvenient frame
It is located on the object that high ferro, unmanned plane etc. are run at high speed and is shot.
Therefore, various transient state spectral imaging technologies arise at the historic moment.At present, main method is irradiated after incident light is divided
To CCD diverse location, the light of each wavelength is imaged in ad-hoc location, i.e., have taken each wavelength simultaneously on a CCD face
Picture.However, because CCD size is limited, if this technology carries out high light spectrum image-forming, each wavelength is only capable of arriving using thousands of
10000 pixel imagings, its image quality extreme difference.When carrying out transient state light spectrum image-forming to overcome, imaging resolution is extremely low to be lacked
Point, this patent provide a kind of brand-new spectrum imaging method, in the case where ensureing its image quality, obtain spectrogram at a high speed
Picture.
Therefore, the prior art is defective, it is necessary to improve.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of spectrum of the high imaging resolution of transient state into
As system.
The technical solution of the utility model is as follows：A kind of spectrum imaging system of the high imaging resolution of transient state, including：Focus on
Lens, dispersing prism, multichannel linearly polarized wave guide plate, Glan Taylor rotatable polarizer, imaging lens group and imaging device；It can be seen that
After the light wave of optical band is assembled by condenser lens, it is divided by dispersing prism, the dispersing prism and multichannel linear polarization waveguide
Plate carries out angle automatching so that the light of different wave length can sequentially enter the different passages in multichannel linearly polarized wave guide plate；Institute
State multichannel linearly polarized wave guide plate and the fiber waveguide of different wave length is entered into Glan Taylor's rotatable polarizer, then will by imaging lens group
The light wave of different wave length carries out light spectrum image-forming on an imaging device.
Further, described condenser lens is conventional spherical lens or the non-spherical lens of optimization, for collecting
Light that object or sample are sent simultaneously is focused on dispersing prism so that dispersing prism effectively can divide incident light
Light.
Further, described dispersing prism is conventional triangular prism, Belling-cloth Rocca prism, Abbe prism；For
Incident light is divided so that the light of different wave length can be compartmentalized, and be transmitted along different directions.
Further, if described multichannel linearly polarized wave guide plate includes dry passage, being inscribed at the feeder connection has had
Inclined line, and the polarization direction of each passage is different；The light of specific wavelength can be carried out waveguide transmission by each passage so that different
The light of wavelength has different polarization states.
Further, the number of channels of described multichannel linearly polarized wave guide plate is optional, multichannel linearly polarized wave guide plate
Number of channels more multispectral resolution rate is then higher.
Further, the spectrum imaging system of the high imaging resolution of described transient state also includes a high-speed electric expreess locomotive, described
Glan Taylor rotatable polarizer is configured on high-speed electric expreess locomotive, including input hole and Glan-Taylor prism；Incident light passes through input hole
Into Glan-Taylor prism, when high-speed electric expreess locomotive is motionless, the light of only one polarization direction can be revolved by Glan Taylor
Turn polarizer injection, when high-speed electric expreess locomotive rotation at a high speed, then the polarization side for the light that the Glan Taylor rotatable polarizer that can pass through projects
To changing successively, because the Different lightwave of incident light has different polarization directions in the present system, it is achieved thereby that different ripples
Long light passes sequentially through.
Further, the imaging lens group includes some imaging lens, for being collected to the light wave after filtered
And focus on the photosurface of imaging device.
Further, the light spectrum image-forming speed of described imaging device is relative with Glan Taylor's rotatable polarizer velocity of rotation
Should, the Glan Taylor rotatable polarizer often rotates an angle, and imaging device is once shot, the Glan Taylor rotation
Polarizer is rotated by 360 °, then spectrum picture completes all shootings.Between each passage polarization direction of multichannel linearly polarized wave guide plate
It is every angle：360 °/channel number.The interval time of single shot is：The time that motor rotates a circle/channel number.
Further, the photosurface of described imaging device includes CCD, cmos device；Described imaging device is at a high speed
Imaging device, frame speed are not less than 500fps.
Further, for the high-speed electric expreess locomotive rotating speed more than 30000 revs/min, the height motor is brushless motor.
The utility model realizes two by dispersing prism, multichannel linearly polarized wave guide plate and Glan Taylor's rotatable polarizer
Dimension filtering.Wherein, after dispersing prism can separate the light wave of different wave length, then project into multichannel linearly polarized wave guide plate, realize
The light wave individual transmission of different wave length, multichannel linearly polarized wave guide plate also cause the light wave of each wavelength to possess different polarization sides
To.Therefore, only have wherein one after the different light wave in these polarization directions enters actionless Glan Taylor rotatable polarizer
The light wave of individual polarization direction can penetrate, i.e., the light of only one wavelength can penetrate.When rotation Glan Taylor's rotatable polarizer,
Then the light of different wave length can be allowed to penetrate and be imaged respectively.
The utility model is rotated using high-speed electric expreess locomotive to Glan-Taylor prism, its rotating speed more than 30000 revs/min,
That is 2ms time can complete a spectral scan, and its speed is far longer than liquid crystal filter and acousto-optic grating filter part
Spectral scan speed, light spectrum image-forming shooting process can be completed at a high speed.In addition, when sweep speed of the present utility model is not scanned
Spectral accuracy influence, the precision of spectrum determines by the channel number of multichannel linearly polarized wave guide plate.
Using such scheme, the utility model has the following advantages that and beneficial effect：
1st, there is the advantages of acquisition speed is exceedingly fast compared to traditional high light spectrum image-forming technology, this patent, greatly improves and be
The transient state spectrum picture acquisition capability of system, has expanded the application of spectral imaging technology.
2nd, relative to other transient state spectrum acquiring technologies, there are more high-quality pixel qualities, without being imaged matter by sacrificing
Measure to obtain the spectral information of transient state.
3rd, this patent uses system architecture simple and compact, is filtered relative to traditional liquid crystal filter part and acousto-optic grating
Device is more cheap, is adapted to promote.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the index path of the utility model multichannel linearly polarized wave guide plate passage；
Fig. 3 is the polarization direction schematic diagram of light in the utility model multichannel linearly polarized wave guide plate passage；
Fig. 4 is the utility model Glan Taylor's rotatable polarizer part-structure schematic diagram；
Fig. 5 is the test system schematic diagram of the utility model embodiment；
Fig. 6 is the spectrum picture that the utility model embodiment obtains.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to figs. 1 to shown in Fig. 4, the utility model provides a kind of spectrum imaging system 4 of the high imaging resolution of transient state, bag
Include：Condenser lens 41, dispersing prism 42, multichannel linearly polarized wave guide plate 43, Glan Taylor rotatable polarizer 44, imaging lens group
45 and imaging device 46；After the light wave of visible light wave range is assembled by condenser lens 41, it is divided by dispersing prism 42, the dispersion
Prism 42 carries out angle automatching with multichannel linearly polarized wave guide plate 43 so that the light of different wave length can sequentially enter multichannel line
Different passages in polarized wave guide plate 43；The fiber waveguide of different wave length is entered Glan Taylor by the multichannel linearly polarized wave guide plate 43
Rotatable polarizer 44, then the light wave of different wave length is carried out by light spectrum image-forming on imaging device 46 by imaging lens group 45.
Wherein, described condenser lens 41 is conventional spherical lens or the non-spherical lens of optimization, for collecting mesh
Mark the light that thing or sample are sent and focus on dispersing prism 42 so that dispersing prism 42 can be carried out effectively to incident light
Light splitting.Described dispersing prism 42 includes but is not limited to conventional triangular prism, Belling-cloth Rocca prism, Abbe prism；For
Incident light is divided so that the light of different wave length can be compartmentalized, and be transmitted along different directions.
If described multichannel linearly polarized wave guide plate 43 includes dry passage 431, described multichannel linearly polarized wave guide plate 43
The quantity of passage 431 it is optional, the quantity of the passage 431 more multispectral resolution rate of multichannel linearly polarized wave guide plate 43 is then higher.It is described
The porch of passage 431, which is inscribed, is polarized line, and the polarization direction of each passage 431 is different；Each passage 431 can be by certain wave
Long light carries out waveguide transmission so that the light of different wave length has different polarization states.
The spectrum imaging system 4 of the high imaging resolution of described transient state also includes a high-speed electric expreess locomotive, described Glan Taylor
Rotatable polarizer 44 is configured on high-speed electric expreess locomotive, including input hole 441 and Glan-Taylor prism 442；Incident light passes through input hole
441 enter Glan-Taylor prism 442, and when high-speed electric expreess locomotive is motionless, the light of only one polarization direction can pass through Glan
Taylor's rotatable polarizer 44 projects, when high-speed electric expreess locomotive rotates at a high speed, then what the Glan Taylor rotatable polarizer 44 that can pass through projected
The polarization direction of light changes successively, because the Different lightwave of incident light has different polarization directions in the present system, so as to real
The light for having showed different wave length passes sequentially through.
The imaging lens group 45 includes some imaging lens, for the light wave after filtered to be collected and focused on
On the photosurface of imaging device 46.The photosurface of described imaging device 46 includes but is not limited to CCD, cmos device；Described
Imaging device 46 is high-speed imaging equipment 46, and frame speed is not less than 500fps.
The light spectrum image-forming speed of described imaging device 46 is corresponding with Glan Taylor 44 velocities of rotation of rotatable polarizer, institute
State Glan Taylor rotatable polarizer 44 and often rotate an angle, imaging device 46 is once shot, the Glan Taylor rotation
Polarizer 44 is rotated by 360 °, then spectrum picture completes all shootings.The each side of polarization of passage 431 of multichannel linearly polarized wave guide plate 43
To interval angles be：360 °/channel number.The interval time of single shot is：The time that motor rotates a circle/passage
Number.
The spectrogram for obtaining high pixel resolution and high spectral resolution at a high speed is obtained using system described in the utility model
The method and step of picture is as follows：
(1) each light wave can be incident to multichannel linear polarization in the optical band that rotatory dispersion prism 42 to need to shoot
In waveguide plate 43；
(2) number of passage 431 in multichannel linearly polarized wave guide plate 43 is selected, according in multichannel linearly polarized wave guide plate 43
The number of passage 431 and polarization direction determine the time interval of shooting；
(3) synchronous averaging Glan Taylor rotatable polarizer 44 and imaging device 46；
(4) Glan Taylor rotatable polarizer 44 stops operating after being rotated by 360 °, and shooting process terminates.
The utility model passes through dispersing prism 42, multichannel linearly polarized wave guide plate 43 and Glan Taylor rotatable polarizer 44
Realize two-dimensional filtering.Wherein, after dispersing prism 42 can separate the light wave of different wave length, then project into multichannel linear polarization waveguide
Plate 43, realizes the light wave individual transmission of different wave length, and multichannel linearly polarized wave guide plate 43 also causes the light wave of each wavelength to possess
Different polarization directions.Therefore, when the different light wave in these polarization directions enters actionless Glan Taylor rotatable polarizer
The light wave of only one polarization direction can penetrate after 44, i.e., the light of only one wavelength can penetrate.When rotation Glan
Taylor's rotatable polarizer 44, then the light of different wave length can be allowed to penetrate and be imaged respectively.
The utility model is rotated using high-speed electric expreess locomotive to Glan-Taylor prism 442, and its rotating speed is more than 30000 revs/min
The time of clock, i.e. 2ms can complete a spectral scan, and its speed is far longer than liquid crystal filter and acousto-optic grating filter part
Spectral scan speed, light spectrum image-forming shooting process can be completed at a high speed.In addition, sweep speed of the present utility model is not scanned
When spectral accuracy influence, the precision of spectrum determines by 431 numbers of passage of multichannel linearly polarized wave guide plate 43.It is this reality below
With new specific embodiment：
Embodiment 1
As shown in figure 5, whole test system has black baffle plate 1, sample 2, burst of ultraviolel source 3, transient state high in the present embodiment
The spectrum imaging system 4 and computer 5 of imaging resolution are formed, and wherein black baffle plate 2, sample 2, burst of ultraviolel source 3 and transient state are high
The spectrum imaging system 4 of imaging resolution is placed in camera bellows 6.
This implementation by the use of the use of sample 2 can produce intense fluorescence Yb and Tm ion-doped glass as sample 2, adopt
Burst of ultraviolel source 3 is used as by the use of the solid state laser that output wavelength is 355nm.
The spectrum imaging system 4 of the high imaging resolution of transient state includes condenser lens 41, dispersing prism 42, more in the present embodiment
Channel line polarized wave guide plate 43, Glan Taylor rotatable polarizer 44, imaging len or imaging lens group 45 and imaging device 466
Part.
Condenser lens 41 employed in the implementation case is equal to 500mm spherical mirror using radius of curvature；It is used
Dispersing prism 42 is triangular prism, and used multichannel linearly polarized wave guide plate 43 is the waveguide plate of 7 passage 431, its polarization direction
It is 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 360 ° respectively.
Glan Taylor rotatable polarizer 44 employed in the implementation case is by 442 groups of input hole 441, Glan-Taylor prism
Into, and configure on high-speed electric expreess locomotive.High-speed electric expreess locomotive employed in the implementation case is Nidec Nidec brushless motors, is turned
Speed is 30000 revs/min.
Imaging lens group 45 employed in the implementation case is Canon's EF 100mm f/2.8L IS USM micro-lens,
Used imaging device 46 is i-SPEED 720R ultrahigh speed ballistic cameras, pixel 1280x720, and frame speed is
20000fps。
The operating mechanism of the system is as follows：Laser system is first turned on, laser beam is irradiated on sample, produces sample
It is born from and fluoresces, fluorescence is focused lens 41 and is excited and focuses on dispersing prism 42, and the light of different wave length will be along difference
Angle outgoing, and enter respective passage 431 in.Each light wave will possess different polarization directions in the plate of multichannel 431.
Now, Glan Taylor rotatable polarizer 44 and imaging device 46 are opened while.According to 30000 revs/min of rotating speed in the present embodiment
Rotated, high-speed camera is then shot with the time every 0.29ms, and terminates to shoot in 2ms.Shoot 7 times,
Shot respectively in 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 360 °.Polarization every angle represents respective wavelength, this
The wavelength of embodiment test is 460nm, 490nm, 520nm, 550nm, 580nm, 610nm, 640nm respectively, and captured picture is such as
Shown in Fig. 6.Fig. 6 illustrates 460nm, 550nm and 640nm picture.
In summary, the utility model can complete a spectral scan within 2ms time, and its speed is far longer than liquid
The spectral scan speed of brilliant wave filter and acousto-optic grating filter part, can complete light spectrum image-forming shooting process at a high speed.In addition, this
The sweep speed of utility model is not influenceed by spectral accuracy when scanning, by the passage for increasing multichannel linearly polarized wave guide plate
431 numbers can obtain high-precision imaging.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, it is all in this practicality
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (9)
- A kind of 1. spectrum imaging system of the high imaging resolution of transient state, it is characterised in that including：It is condenser lens, dispersing prism, more Channel line polarized wave guide plate, Glan Taylor rotatable polarizer, imaging lens group and imaging device；The light wave of visible light wave range passes through After condenser lens aggregation, it is divided by dispersing prism, the dispersing prism carries out angle automatching with multichannel linearly polarized wave guide plate, makes Obtaining the light of different wave length can sequentially enter in multichannel linearly polarized wave guide plate；The multichannel linearly polarized wave guide plate is by different ripples Long fiber waveguide enters Glan Taylor's rotatable polarizer, then is entered the light wave of different wave length on an imaging device by imaging lens group Row light spectrum image-forming.
- 2. the spectrum imaging system of the high imaging resolution of transient state according to claim 1, it is characterised in that described focusing Lens are conventional spherical lens or the non-spherical lens of optimization, for collecting light that object or sample send and focusing on On dispersing prism so that dispersing prism effectively can be divided to incident light.
- 3. the spectrum imaging system of the high imaging resolution of transient state according to claim 1, it is characterised in that described dispersion Prism is conventional triangular prism, Belling-cloth Rocca prism, Abbe prism；For being divided to incident light so that different ripples Long light can be compartmentalized, and be transmitted along different directions.
- 4. the spectrum imaging system of the high imaging resolution of transient state according to claim 1, it is characterised in that described is more logical If diatom polarized wave guide plate includes dry passage, inscribed at the feeder connection and be polarized line, and the polarization direction of each passage is not Together；The light of specific wavelength can be carried out waveguide transmission by each passage so that the light of different wave length has different polarization states.
- 5. the spectrum imaging system of the high imaging resolution of transient state according to claim 4, it is characterised in that described transient state The spectrum imaging system of high imaging resolution also includes a high-speed electric expreess locomotive, and the configuration of described Glan Taylor rotatable polarizer is at a high speed On motor, including input hole and Glan-Taylor prism；Incident light enters Glan-Taylor prism by input hole, when high-speed electric expreess locomotive not When dynamic, the light of only one polarization direction can be projected by Glan Taylor rotatable polarizer, when high-speed electric expreess locomotive revolves at a high speed Turn, then the polarization direction for the light that the Glan Taylor rotatable polarizer that can pass through projects changes successively, due to not sharing the same light for incident light Ripple has different polarization directions in the present system, it is achieved thereby that the light of different wave length passes sequentially through.
- 6. the spectrum imaging system of the high imaging resolution of transient state according to claim 1, it is characterised in that the imaging is saturating Microscope group includes some imaging lens, for being collected to the light wave after filtered and focusing on the photosurface of imaging device.
- 7. the spectrum imaging system of the high imaging resolution of transient state according to claim 1, it is characterised in that described imaging The light spectrum image-forming speed of equipment is corresponding with Glan Taylor's rotatable polarizer velocity of rotation, and the Glan Taylor rotatable polarizer is every An angle is rotated, imaging device is once shot, and the Glan Taylor rotatable polarizer is rotated by 360 °, then spectrum picture is complete Into whole shootings.
- 8. the spectrum imaging system of the high imaging resolution of transient state according to claim 7, it is characterised in that described imaging The photosurface of equipment includes CCD, cmos device；Described imaging device is high-speed imaging equipment, and frame speed is not less than 500fps.
- 9. the spectrum imaging system of the high imaging resolution of transient state according to claim 5, it is characterised in that the high speed electricity For machine rotating speed more than 30000 revs/min, the high-speed electric expreess locomotive is brushless motor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111433590A (en) * | 2017-12-07 | 2020-07-17 | 横河电机株式会社 | Spectroscopic analyzer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111433590A (en) * | 2017-12-07 | 2020-07-17 | 横河电机株式会社 | Spectroscopic analyzer |
| CN111433590B (en) * | 2017-12-07 | 2023-08-22 | 横河电机株式会社 | Spectroscopic analysis device |
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