CN106129788A - A kind of based on multimode fibre watt of level laser fiber beam merging apparatus - Google Patents
A kind of based on multimode fibre watt of level laser fiber beam merging apparatus Download PDFInfo
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- CN106129788A CN106129788A CN201610786219.8A CN201610786219A CN106129788A CN 106129788 A CN106129788 A CN 106129788A CN 201610786219 A CN201610786219 A CN 201610786219A CN 106129788 A CN106129788 A CN 106129788A
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- watt
- laser
- fiber
- visible light
- module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a kind of based on multimode fibre watt of level laser fiber beam merging apparatus, including laser generation module, optical-fiber bundling module and vibrating motor.The outfan of laser generation module is connected with the input of optical-fiber bundling module, and the outfan of optical-fiber bundling module is wrapped on vibrating motor.Laser generation module launches multi beam watt level visible light lasers, and multi beam watt level visible light lasers is coupled into optical fiber, it is a branch of recombination laser that multi beam watt level visible light lasers closes bundle by optical-fiber bundling module, vibrating motor vibration drives the outfan vibration of optical-fiber bundling module, speckle in recombination laser is eliminated, in this device, parts required precision is relatively low, it is possible to realize eliminating the speckle in recombination laser in the way of less expensive, it is achieved high-quality flat top beam exports.
Description
Technical field
The invention belongs to optical fiber laser field, more particularly, to a kind of based on multimode fibre watt of level laser fiber
Beam merging apparatus.
Background technology
In the application of laser instrument, need to close watt level visible light lasers of multi beam different wave length to restraint into a branch of recombination laser
Act on object of study, such as, during for carrying out fluorescence imaging with the biological sample of fluorescin or fluorochrome label, need
Watt level visible light lasers of multi beam different wave length is closed bundle is a branch of recombination laser, is used for observing biological sample.Big in order to obtain
Visual field and high-quality imaging effect, need laser beam merging apparatus to have high stability, high coupling efficiency, high synthesis degree, bear watt
Level laser power and output recombination laser speckle are little.
In prior art, generally use multiple optical filters to realize closing bundle, but the method synthesis degree is low, poor stability, coupling
Efficiency is low.Close by using the method for fused biconical taper to be connected realization with single circular single-mode fiber many circular single-mode fibers
Bundle, it is possible to obtain good coupling efficiency, the laser power can born due to single-mode fiber is general all below hundreds of milliwatt, it is impossible to
Close bundle watt level visible light lasers.By many circular multimode fibres and single circular multimode fibre being used the side of fused biconical taper shape
Method connects realization and swashs combiner, can bear a watt level laser power, but be caused recombination laser light owing to affecting by speckle
Speckle poor quality.In circular multimode fibre outfan light path, add diffusion sheet and the collimating lens of vibration, speckle can be reduced
Impact, but due to add vibration diffusion sheet and collimating lens, add the complexity of light path, reduce laser power effect
Rate, and the poor effect of dissipation speckle.
Summary of the invention
For disadvantages described above, the invention provides a kind of based on multimode fibre watt of level laser fiber beam merging apparatus, be used for
Solve owing to laser beam produces speckle phenomena in interference between pattern present in multimode fibre transmitting procedure, thus lead
The recombination laser light intensity causing the output of existing optical-fiber bundling device presents speckle distribution and the technical problem of optical quality difference.
For achieving the above object, a kind of based on multimode fibre watt of level laser fiber beam merging apparatus that the present invention provides, bag
Include laser generation module, optical-fiber bundling module and vibrating motor；The outfan of described laser generation module closes with described optical fiber
The input of bundle module connects, and the outfan of described optical-fiber bundling module is wrapped on described vibrating motor output shaft.
Described laser generation module, is used for exporting multi beam watt level visible light lasers, and by multi beam watt level visible light lasers coupling
It is incorporated into the input of optical-fiber bundling module；
Described optical-fiber bundling module, its input is many circular multimode fibres, its outfan be a core diameter and
Numerical aperture is more than the non-circular multimode fibre of input circle multimode fibre；Many circular multimode fibres and non-circular multimode light
Fibre connects by the way of fused biconical taper, the multi beam watt level visible laser entering its input is closed bundle defeated for a branch of recombination laser
Go out；
Described vibrating motor, is driven by the vibration produced the outfan of optical-fiber bundling module to vibrate, eliminates recombination laser
In speckle.
Laser generation module output multi beam watt level visible light lasers, and multi beam watt level visible light lasers is coupled into optical fiber
In, it is a branch of recombination laser that the multi beam watt level visible light lasers being coupled in optical fiber closes bundle through optical-fiber bundling module, and by
Non-circular multimode fibre output in optical-fiber bundling module；This non-circular multimode fibre is wrapped on vibrating motor output shaft, many
Plant watt level visible laser transmission in non-circular multimode fibre of transmission mode, it is possible to reduce watt multiple transmission of level visible laser
The interference produced between pattern, it addition, by vibrating non-circular multimode fibre, can make non-circular multimode fibre outfan
Light distribution modulated because of phase-modulation and Mode Coupling between pattern thus realize eliminating in recombination laser
Speckle.
Further, described laser generation module includes watt level visible laser group and is coupled into fiber module, described watt
The outfan of level visible light lasers group is connected with the input being coupled into fiber module；Watt level visible laser group, by multiple watts
Level visible laser composition, is used for producing multi beam watt level visible light lasers；
It is coupled into fiber module, for multi beam watt level visible light lasers is coupled into optical fiber.
The mode using watt level visible laser group and be coupled into fiber module, requires not watt level visible laser
Height, reduces installation cost.
Further, described laser generation module, also for be made up of multiple watts of level visible ray fiber coupled lasers, reduces
The complexity of light path.
Further, the amplitude of described vibrating motor is grade, and frequency of vibration is less than 20,000 rpms, to vibration electricity
The performance requirement of machine is the highest, can significantly reduce can reduce optical-fiber bundling module under the cost of the present invention, and this amplitude defeated
Go out the damage of end.
Further, vibrating motor is Miniature DC vibration electric machine, is used for reducing installation cost.
Further, be coupled into described in fiber module include the first reflecting mirror, the second reflecting mirror, the first aperture diaphragm, second
Aperture diaphragm and optical fiber collimator；
Described first reflecting mirror, described watt of level visible light lasers, through the reflection of the first reflecting mirror, gets to the second reflecting mirror
Minute surface；
Described second reflecting mirror, again changes the road of watt level visible light lasers after being reflected by the first reflecting mirror by reflection
Footpath；
Described first aperture diaphragm, for collimation watt level visible light lasers, changes through the first reflecting mirror and the second reflecting mirror
Become watt level visible light lasers aperture center by the first aperture diaphragm in path；
Described second aperture diaphragm, for collimation watt level visible light lasers, and the centre-height of described first aperture diaphragm
Equal, in watt level visible light lasers aperture simultaneously also by the second aperture diaphragm of the aperture center of the first aperture diaphragm
The heart；
Described optical fiber collimator, for a watt level visible light lasers being coupled into circular multimode fibre, described through the second hole
A watt level visible light lasers for the aperture center of footpath diaphragm gets to optical fiber collimator.
Further, described first reflecting mirror and the second reflecting mirror are coated with the anti-reflection film of visible light wave range, for minimizing watt
Level visible light lasers power loss.
Further, described circular multimode fibre and non-circular multimode fibre end are provided with sub-miniature A connector, are used for increasing optical fiber
The power damage thresholds of fine end.
By the above technical scheme that the present invention is contemplated, compared with prior art, there is a techniques below effect:
Many circular multimode fibres and a non-circular multimode fibre are connected by the mode 1, using fused biconical taper, it is achieved will
It is a branch of recombination laser that multi beam watt level visible laser closes bundle, and is around on vibrating motor output shaft by non-circular multimode fibre, non-
Circular multimode fibre advantageously reduces the speckle of recombination laser, further, is vibrated by vibrating motor, makes non-circular multimode fibre
Vibration, due to watt level visible light lasers of multiple transmission mode, in the transmission of same root multimode fiber, the hot spot that causes will be because of
Phase-modulation and Mode Coupling between transmission mode and modulated, it is achieved eliminate the speckle in recombination laser.
2, higher coupling effect can be obtained owing to non-circular optical fiber has matching properties more preferable with laser output facula
Rate；It addition, enter by the way of by many, circular input multimode fibres and a non-circular output multimode fibre are with fused biconical taper
Row welding, reduces watt level visible light lasers power loss, improves power coupling efficiency.
3, the highest to the performance requirement of vibrating motor in the present invention, significantly reduce the cost of the present invention, it is easy to extensive
Manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As it is shown in figure 1, watt level laser fiber beam merging apparatus of a kind of multimode fibre provided in the present embodiment, including laser
There is module, be used for exporting multi beam watt level visible light lasers, and multi beam watt level visible light lasers is coupled into optical fiber, optical-fiber bundling
Module is all higher than input circle multimode by many circular multimode fibres and a core diameter and numerical aperture core diameter and numerical aperture
The non-circular multimode fibre of optical fiber connects by the way of fused biconical taper, is coupled into the multi beam watt level visible light lasers warp of optical fiber
Crossing optical-fiber bundling module and closing bundle is a branch of recombination laser, and the non-circular multimode fibre in optical-fiber bundling module is wrapped in vibrating motor
On.
Laser generation module output multi beam watt level visible light lasers, and multi beam watt level visible light lasers is coupled into optical fiber
Closing in bundle module in each circular multimode fibre, closing bundle through optical-fiber bundling module is a branch of recombination laser, and by optical-fiber bundling
Non-circular multimode fibre output in module.This non-circular multimode fibre is wrapped on the output shaft of vibrating motor, multiple transmission
Watt level visible light lasers of pattern transmits in non-circular multimode fibre, it is possible to reduce watt multiple transmission mode of level visible laser it
Between produce interference, reduce speckle；It addition, vibrating motor vibration time make non-circular multimode fibre by external vibration, can
So that the light distribution of non-circular multimode fibre outfan is modulated because of phase-modulation and Mode Coupling between pattern,
Thus realize eliminating the speckle in recombination laser.
Additionally, due to non-circular optical fiber has matching properties more preferable with laser output facula and can obtain higher coupling
Efficiency, melts by the way of by many, circular input multimode fibres and a non-circular output multimode fibre are with fused biconical taper
Connect, reduce watt level visible light lasers power loss, improve power coupling efficiency.
As the another kind of embodiment of the present invention, in order to reduce watt complexity in level visible light lasers path, laser is sent out
Raw module can be a watt level visible light lasers fiber coupled laser, and a watt level visible light lasers fiber coupled laser directly passes through
Circular multimode fibre output watt level visible light lasers, decrease because watt level visible light lasers by reflecting mirror change light path and
The power loss that the collimation of aperture diaphragm causes.
As the another kind of embodiment of the present invention, vibrating motor be amplitude be that grade and frequency of vibration are every less than 20,000 turns
Minute, can effectively alleviate the interference between watt multiple transmission mode of level visible light lasers under this amplitude and this frequency of vibration existing
As, and the vibration damage to non-circular multimode fibre under this amplitude, can be reduced, it is the highest to the performance requirement of vibrating motor, it is possible to
Significantly reduce the cost of the present invention, beneficially large-scale production manufacture.
As in figure 2 it is shown, the another kind of embodiment of the present invention, laser generation module includes watt level visible laser group and a coupling
Being incorporated into fiber module, a watt level visible laser group is made up of multiple watts of level visible lasers, is used for producing multi beam watt level visible
Ray laser, watt level visible laser 1 constitutes watt level visible laser group to watt level visible laser 4, for output four
Road watt level visible laser；It is coupled into fiber module, for multi beam watt level visible light lasers is coupled into optical fiber, is coupled into fine mould
Block 5 to being coupled into fiber module 8 for four road watt level visible light lasers are coupled into optical fiber, the outfan of watt level visible light lasers group
It is connected with the input being coupled into fiber module.In the present embodiment the highest to watt performance requirement of level visible laser, be conducive to
Reduce installation cost.
It is coupled into fiber module 5 and includes first reflecting mirror the 9, second reflecting mirror the 10, first aperture diaphragm the 11, second aperture diaphragm
12 and optical fiber collimator 13, the first aperture diaphragm 11 and the second aperture diaphragm 12 is equivalently-sized and aperture center is positioned at same water
Horizontal line, watt level visible laser 1 watt level visible light lasers sent reflects through the first reflecting mirror 9 and the second reflecting mirror 10
After, successively pass through from the aperture center of the first aperture diaphragm 11 and the aperture center of the second aperture diaphragm 12, it is achieved the standard of light beam
Directly, it is coupled into circular multimode fibre 14 by optical fiber collimator 13.It is coupled into fiber module 6 to the structure being coupled into fiber module 8
Identical with the structure being coupled into fiber module 5.
In order to improve the power damage thresholds of circular multimode fibre 14, it is provided with SMA four circular multimode fibre 14 ends
Fibre-optical splice, in the present embodiment, the core diameter of circular multimode fibre is 50um, and cladding diameter is 125um, and numerical aperture is
0.2, the core diameter of non-circular multimode fibre 15 is 200um, and cladding diameter is 400um, and numerical aperture is 0.22.Four circles
Multimode fibre is connected with non-circular multimode fibre by the way of fused biconical taper；Four tunnels are coupled into light through be coupled into fine device
It is a branch of recombination laser that the fine watt level visible light lasers closing bundle module input closes bundle through optical-fiber bundling module, by non-circular many
Mode fiber 15 exports, and non-circular multimode fibre 15 is wrapped on vibrating motor 16.In the present embodiment, vibrating motor 16 selects conventional
Miniature DC vibration electric machine, the amplitude of this Miniature DC vibration electric machine is at grade, and frequency of vibration is 6000 rpms, logical
Crossing the vibration of Miniature DC vibration electric machine, make not rounded multimode fibre 15 produce vibration, watt level visible ray of multiple transmission mode swashs
The hot spot that light exports at same root multimode fiber will be modulated because of the phase-modulation between transmission mode and Mode Coupling,
Thus the speckle in recombination laser is removed.In order to improve the power damage thresholds of non-circular multimode fibre 17, non-circular many
Mode fiber 17 end is provided with SMA fiber joint.
Watt level visible light lasers power of the different wave length entering optical-fiber bundling module is measured respectively by light power meter, and
And the power of the recombination laser of the non-circular multimode fibre output that measurement is after vibrating motor vibrates, calculate optical-fiber bundling dress
The coupling efficiency ultraviolet put can reach 70%, it is seen that light can reach 90%, and speckle intensity contrast can reach 0.0375, is higher than
The performance of general optical-fiber bundling device, and in the present invention, parts required precision is relatively low, cost of manufacture is low and easy to operate.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (8)
1. one kind based on multimode fibre watt level laser fiber beam merging apparatus, it is characterised in that include laser generation module, optical fiber
Close bundle module and vibrating motor；The outfan of described laser generation module is connected with the input of described optical-fiber bundling module,
The outfan of described optical-fiber bundling module is wound on described vibrating motor output shaft；
Described laser generation module, is used for exporting multi beam watt level visible light lasers, and is coupled into by multi beam watt level visible light lasers
Optical fiber；
Described optical-fiber bundling module, its input is many circular multimode fibres, and its outfan is a core diameter and numerical value
Aperture is all higher than the non-circular multimode fibre of input circle multimode fibre, many circular multimode fibres and non-circular multimode fibre
Connecting by the way of fused biconical taper, the multi beam watt level visible laser entering its input is closed bundle is a branch of recombination laser；
Described vibrating motor, drives the outfan vibration of optical-fiber bundling module to eliminate dissipating in recombination laser by the vibration produced
Speckle.
The most according to claim 1 watt of level laser fiber beam merging apparatus, it is characterised in that described laser generation module includes
Watt level visible laser group and be coupled into fiber module, the outfan of described watt of level visible light lasers group be coupled into fiber module
Input connects；
Watt level visible laser group, is made up of multiple watts of level visible lasers, is used for producing multi beam watt level visible light lasers；
It is coupled into fiber module, for multi beam watt level visible light lasers is coupled into optical fiber.
The most according to claim 1 watt of level laser fiber beam merging apparatus, it is characterised in that described laser generation module is by many
Individual watt of level visible ray fiber coupled laser composition.
The most according to claim 1 watt of level laser fiber beam merging apparatus, it is characterised in that the amplitude of described vibrating motor is
Grade, frequency of vibration is less than 20,000 rpms.
The most according to claim 1 watt of level laser fiber beam merging apparatus, it is characterised in that vibrating motor is that minisize dc shakes
Galvanic electricity machine.
The most according to claim 2 watt of level laser fiber beam merging apparatus, it is characterised in that described in be coupled into fiber module and include
First reflecting mirror, the second reflecting mirror, the first aperture diaphragm, the second aperture diaphragm and optical fiber collimator；
Described first reflecting mirror, described watt of level visible light lasers, through the reflection of the first reflecting mirror, gets to the mirror of the second reflecting mirror
Face；
Described second reflecting mirror, again changes the path of watt level visible light lasers after being reflected by the first reflecting mirror by reflection；
Described first aperture diaphragm, for collimation watt level visible light lasers, changes road through the first reflecting mirror and the second reflecting mirror
Watt level visible light lasers in the footpath aperture center by the first aperture diaphragm；
Described second aperture diaphragm, for collimation watt level visible light lasers, the aperture center of the second aperture diaphragm and described first
The aperture center height of aperture diaphragm is equal, and watt level visible light lasers through the aperture center of the first aperture diaphragm also leads to simultaneously
Cross the aperture center of the second aperture diaphragm；
Described optical fiber collimator, for a watt level visible light lasers being coupled into circular multimode fibre, described through the second aperture light
A watt level visible light lasers for the aperture center of door screen gets to optical fiber collimator.
The most according to claim 6 watt of level laser fiber beam merging apparatus, it is characterised in that described first reflecting mirror and second
Reflecting mirror is all coated with the anti-reflection film of visible light wave range.
8. according to watt level laser fiber beam merging apparatus described in claim 1-7 Arbitrary Term, it is characterised in that described circular multimode
Optical fiber and non-circular multimode fibre end are equipped with sub-miniature A connector.
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| CN201610786219.8A CN106129788A (en) | 2016-08-31 | 2016-08-31 | A kind of based on multimode fibre watt of level laser fiber beam merging apparatus |
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| CN201610786219.8A CN106129788A (en) | 2016-08-31 | 2016-08-31 | A kind of based on multimode fibre watt of level laser fiber beam merging apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873079A (en) * | 2017-04-27 | 2017-06-20 | 苏州高新区建金建智能科技有限公司 | A kind of fiber beam splitting device |
| CN107367846A (en) * | 2017-07-07 | 2017-11-21 | 中国工程物理研究院激光聚变研究中心 | The laser lighting light channel structure of speckle can be suppressed |
| CN109900663A (en) * | 2017-12-11 | 2019-06-18 | 长光华大基因测序设备（长春）有限公司 | Laser light source speckle measurement method, speckle inhibit device and its parameter optimization method |
| CN111240026A (en) * | 2020-02-28 | 2020-06-05 | 史晓庆 | Laser lighting device |
| CN112684608A (en) * | 2020-12-31 | 2021-04-20 | 陕西奥润激光技术有限公司 | Light beam homogenizing system for conducting multi-mode superposition on optical fiber coupling laser through electromagnetic vibration |
| CN112769028A (en) * | 2020-12-28 | 2021-05-07 | 北京凯普林光电科技股份有限公司 | Semiconductor fiber laser assembly and fiber laser |
| CN113835232A (en) * | 2021-09-30 | 2021-12-24 | 华中科技大学 | Speckle dissipation device, laser projection imaging system and laser illumination imaging system |
| CN114778500A (en) * | 2022-04-01 | 2022-07-22 | 中国科学院苏州生物医学工程技术研究所 | High-power large-visual-field multiband illumination fluorescence imaging system |
| US12068584B2 (en) | 2020-12-28 | 2024-08-20 | BWT Beijing Ltd. | Semiconductor-fiber-laser assembly and fiber laser |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873079A (en) * | 2017-04-27 | 2017-06-20 | 苏州高新区建金建智能科技有限公司 | A kind of fiber beam splitting device |
| CN107367846A (en) * | 2017-07-07 | 2017-11-21 | 中国工程物理研究院激光聚变研究中心 | The laser lighting light channel structure of speckle can be suppressed |
| CN107367846B (en) * | 2017-07-07 | 2023-11-03 | 中国工程物理研究院激光聚变研究中心 | Laser illumination light path structure capable of inhibiting speckles |
| CN109900663A (en) * | 2017-12-11 | 2019-06-18 | 长光华大基因测序设备（长春）有限公司 | Laser light source speckle measurement method, speckle inhibit device and its parameter optimization method |
| CN109900663B (en) * | 2017-12-11 | 2021-07-06 | 长春长光华大智造测序设备有限公司 | Laser light source speckle measurement method, speckle suppression device and parameter optimization method thereof |
| CN111240026A (en) * | 2020-02-28 | 2020-06-05 | 史晓庆 | Laser lighting device |
| CN112769028A (en) * | 2020-12-28 | 2021-05-07 | 北京凯普林光电科技股份有限公司 | Semiconductor fiber laser assembly and fiber laser |
| US12068584B2 (en) | 2020-12-28 | 2024-08-20 | BWT Beijing Ltd. | Semiconductor-fiber-laser assembly and fiber laser |
| CN112684608A (en) * | 2020-12-31 | 2021-04-20 | 陕西奥润激光技术有限公司 | Light beam homogenizing system for conducting multi-mode superposition on optical fiber coupling laser through electromagnetic vibration |
| CN113835232A (en) * | 2021-09-30 | 2021-12-24 | 华中科技大学 | Speckle dissipation device, laser projection imaging system and laser illumination imaging system |
| CN114778500A (en) * | 2022-04-01 | 2022-07-22 | 中国科学院苏州生物医学工程技术研究所 | High-power large-visual-field multiband illumination fluorescence imaging system |
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Application publication date: 20161116 |
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