CN114114704A - Self-focusing laser dazzling system for realizing high-uniformity far-field laser spot - Google Patents
Self-focusing laser dazzling system for realizing high-uniformity far-field laser spot Download PDFInfo
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- CN114114704A CN114114704A CN202111551113.7A CN202111551113A CN114114704A CN 114114704 A CN114114704 A CN 114114704A CN 202111551113 A CN202111551113 A CN 202111551113A CN 114114704 A CN114114704 A CN 114114704A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 10
- 230000004313 glare Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B15/00—Weapons not otherwise provided for, e.g. nunchakus, throwing knives
Abstract
The invention discloses a self-focusing laser dazzling system for realizing high-uniformity far-field laser spots, which belongs to the technical field of laser and comprises a laser, an optical ladder beam splitter, a rotary scattering sheet, an energy transmission optical fiber waveguide, a zoom lens group, an observation and aiming distance measuring module, a holder and a control module; the laser outputs high-coherence laser, a plurality of beams of laser with lower coherence are obtained through the light ladder beam splitter, then the laser beams are transmitted and further the coherence among the beams is reduced through the rotating scattering sheet to obtain low-coherence laser beams, the low-coherence laser beams are guided into the energy transmission optical fiber waveguide, the energy transmission optical fiber waveguide is a polygonal core diameter energy transmission optical fiber waveguide, and after shaping and homogenizing are carried out through the polygonal core diameter energy transmission optical fiber waveguide, light spots with uniform height are obtained at a waveguide outlet; and (4) utilizing a zoom lens group to image and project the shaped and homogenized light spots to different target distances. The invention obtains high-uniformity far-field target light spots at different target distances under the condition that atmospheric turbulence, diffraction and scattering effects exist.
Description
Technical Field
The invention relates to the technical field of laser, in particular to a self-focusing laser dazzling system for realizing high-uniformity far-field laser spots.
Background
A common laser dazzling system generally controls the energy density of light spots entering human eyes by adjusting the divergence angle of a laser beam, but the method cannot ensure the uniformity of far-field light spot energy; in the laser beam transmission process, due to the existence of atmospheric turbulence, diffraction and scattering effects, stripes, speckles and the like are generated on target spots, the uniformity of the spots at the target position is greatly reduced, and no effective solution is provided for the phenomenon by a common laser dazzling system. Therefore, the uniformity of far-field spots of a common laser dazzling system is poor, and the problems of poor safety and reliability of the dazzling system are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a self-focusing laser dazzling system for realizing high-uniformity far-field light spots of laser, and the high-uniformity far-field target light spots under different target distances are obtained under the condition that atmospheric turbulence, diffraction and scattering effects exist.
The purpose of the invention is realized by the following scheme:
a self-focusing laser dazzling system for realizing laser high-uniformity far-field light spots comprises a laser, a light ladder beam splitter, a rotary scattering sheet, an energy transmission optical fiber waveguide, a zoom lens group, an observation and aiming distance measuring module, a holder and a control module; the laser outputs high-coherence laser, a plurality of beams of laser with lower coherence are obtained through the optical ladder beam splitter, the laser with lower coherence is transmitted and further the coherence among the beams is reduced through the rotating scattering sheet to obtain laser beams with low coherence, the laser beams with low coherence are guided into the energy-transmitting optical fiber waveguide, the energy-transmitting optical fiber waveguide is a polygonal core diameter energy-transmitting optical fiber waveguide, and after shaping and homogenizing are carried out through the polygonal core diameter energy-transmitting optical fiber waveguide, light spots with uniform height are obtained at a waveguide outlet; and (3) utilizing a zoom lens group to image and project the shaped and homogenized light spots to different target distances, thereby obtaining high-uniformity far-field glare light spots at different target distances.
The system comprises an observation and measurement distance module, a cradle head and a control module, wherein the observation and measurement distance module is used for identifying a target and distance information of the target, the data output end of the observation and measurement distance module is connected with the input end of the control module, the first control output end of the control module is connected with the cradle head and used for driving the cradle head to track the target, and the second control output end of the control module is connected with a zoom lens group and driving the zoom lens group to image uniform light spots to the target with different distances; and the third control output end of the control module is connected with the laser and used for controlling the laser output power according to the target information and the atmospheric condition.
Further, the laser comprises a 532nm green pulsed laser.
Further, the control module drives the holder carrying observation and aiming distance measuring module to move within the range of a horizontal angle of 0-360 degrees and a pitching angle of-45 degrees to +45 degrees so as to detect the target.
Furthermore, a zoom lens group is arranged in the observation range module.
Further, the zoom ratio of the zoom lens group is 40 times.
The beneficial effects of the invention include:
the invention realizes a laser dazzling system with high uniformity of laser far-field light spots, and can obtain high-uniformity far-field target light spots at different target distances under the condition that atmospheric turbulence, diffraction and scattering effects exist.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure, 1-a laser, 2-an optical ladder beam splitter, 3-a rotating scattering sheet, 4-an energy transmission fiber waveguide, 5-a zoom lens group, 6-an observation distance measuring module, 7-a tripod head and 8-a control module.
Detailed Description
All features disclosed in all embodiments in this specification, or all methods or process steps implicitly disclosed, may be combined and/or expanded, or substituted, in any way, except for mutually exclusive features and/or steps.
The technical concept, the technical problems to be solved, the working principle, the working process and the advantages of the present invention will be further described in detail and fully with reference to the accompanying drawing 1.
As shown in fig. 1, a self-focusing laser glare system that achieves high laser uniformity of a far field spot.
The design idea of the invention is as follows: the invention aims to provide a technical scheme of a laser dazzling system capable of realizing high uniformity of laser far-field light spots, and the laser dazzling system can obtain the high-uniformity far-field target light spots at different target distances under the condition that atmospheric turbulence, diffraction and scattering effects exist.
In order to achieve the above purpose, in a specific embodiment of the present invention, a technical solution of a laser module + an observation distance module + a control module + a pan/tilt head is adopted. The laser module adopts the technical scheme of 532nm green laser light source, light ladder beam splitting, rotary scattering sheet, homogenizing waveguide and zoom lens group imaging.
High-coherence green laser output by a 532nm laser passes through an optical ladder beam splitter 2 to obtain a plurality of beams of laser with lower coherence; after the laser beams are transmitted through the rotating scattering sheet 3, the coherence among the laser beams is further reduced; introducing a low coherence laser beam into the energy-transmitting fiber waveguide 4, and utilizing the shaping and homogenizing functions of the waveguide to obtain highly uniform light spots at the outlet of the waveguide; then, the imaging zoom lens group 5 with variable focus is used for imaging and projecting the light spots with high homogenization to different target distances, so that the far-field glare light spots with high uniformity at different target distances are obtained. The observing and measuring distance module 6 is used for identifying a target and distance information of the target, the control module 8 is used for driving the holder to track the target, controlling laser output power according to the target information and atmospheric conditions, and driving the zoom lens group 5 to image uniform light spots to the target with different distances.
Fig. 1 shows a system scheme provided by the present invention, and the system includes a laser 1, an optical ladder beam splitter 2, a rotating diffuser 3, a polygonal core diameter energy transmission optical fiber 4, a zoom lens group 5, an observation and measurement distance module 6, a pan-tilt 7 and a control module 8. In a specific implementation, the laser 1 may be a pulsed green laser. The polygonal core diameter energy transmission optical fiber 4 can be a rectangular core diameter energy transmission optical fiber.
In a specific embodiment of the present invention, a laser dazzling system is provided that achieves an effective working distance of 25m to 1000m and a visibility of 5km, a laser spot size of 10m × 10m, a laser power density at a target on the order of mW/cm2, and a target distance of 25m to 1000m, a visibility of 5km, and a spot size of 10m × 10 m.
In the specific embodiment of the invention, a pulse green laser is used for emitting laser with the wavelength of 532 +/-1 nm, low coherent light beams with uniform height are obtained at a waveguide outlet through an optical ladder beam splitting 2, a rotary scattering sheet 3 and an energy transmission optical fiber waveguide 4, the size of a light spot at the waveguide outlet is 1mm multiplied by 1mm, then a zoom lens group 5 with 40 times of large zoom ratio is used for imaging the uniform light spots at the waveguide outlet to different distances, and further the uniform light spots with the wavelength of 10m multiplied by 10m can be obtained within the ranges of 5km of atmospheric visibility and 25 m-1000 m of target distance.
The control module 8 drives the pan-tilt 7 to carry on the observation and distance-measuring module 6 to move in the range of horizontal angle 0-360 degrees and pitch angle-45 degrees to +45 degrees so as to detect the target, and meanwhile, the observation and distance-measuring module 6 performs observation and distance identification on the target by using a built-in zoom lens group (the zoom range is 12.5-775 mm, the imaging resolution is 1920 multiplied by 1080), so that the distance information of the target is obtained, and the pan-tilt 7 accurately tracks the target with the positioning accuracy of +/-1 degree. The control module 8 calculates the output power required by the pulse green laser and the displacement required by the lens in the zoom lens group 5 (with a zoom ratio of 40 times) according to the target information, and then the control module 8 controls the pulse green laser to output the laser with the required power and drives the lens in the zoom lens group 5 to move.
Laser with wavelength of 532 +/-1 nm emitted by a pulse green laser obtains a low coherent light beam with uniform height at a waveguide outlet through an optical ladder beam splitter 2, a rotary scattering sheet 3 and an energy transmission optical fiber waveguide 4, the spot size at the waveguide outlet is 1mm multiplied by 1mm, the spot uniformity is less than or equal to 0.01, then the uniform spot at the waveguide outlet is imaged to a target distance (the target distance variable range is 25 m-1000 m) by a zoom lens group 5, and then the target distance is obtained with the size of 10m multiplied by 10m, the uniformity is less than or equal to 0.01 and the power density mW/cm2The magnitude of the light is uniform to cause glare spots.
Example 1
A self-focusing laser dazzling system for realizing laser high-uniformity far-field light spots comprises a laser 1, an optical ladder beam splitter 2, a rotary scattering sheet 3, an energy transmission optical fiber waveguide 4, a zoom lens group 5, an observation and distance measurement module 6, a cloud deck 7 and a control module 8; the laser 1 outputs high-coherence laser, a plurality of beams of laser with lower coherence are obtained by the optical ladder beam splitter 2, the plurality of beams of laser with lower coherence are transmitted through the rotary scattering sheet 3, the coherence among the beams of laser is further reduced to obtain laser beams with lower coherence, the laser beams with lower coherence are guided into the energy-transmitting optical fiber waveguide 4, the energy-transmitting optical fiber waveguide 4 is a polygonal core diameter energy-transmitting optical fiber waveguide, and after shaping and homogenizing are carried out by the polygonal core diameter energy-transmitting optical fiber waveguide, light spots with uniform height are obtained at a waveguide outlet; and (3) utilizing the zoom lens group 5 to image and project the shaped and homogenized light spots to different target distances, thereby obtaining high-uniformity far-field glare light spots at different target distances.
Example 2
On the basis of the embodiment 1, the device comprises an observation and distance measurement module 6, a pan/tilt head 7 and a control module 8, wherein the observation and distance measurement module 6 is used for identifying a target and distance information of the target, a data output end of the observation and distance measurement module is connected with an input end of the control module 8, a first control output end of the control module 8 is connected with the pan/tilt head 7 and is used for driving the pan/tilt head 7 to track the target, a second control output end of the control module 8 is connected with a zoom lens group 5 and driving the zoom lens group 5 to image uniform light spots to the target with different distances; and a third control output end of the control module 8 is connected with the laser 1 and is used for controlling the laser output power according to the target information and the atmospheric condition.
In practical applications, the laser 1 may alternatively comprise a 532nm green pulsed laser.
In practical application, optionally, the control module 8 drives the pan-tilt 7 to carry the observation and aiming distance-measuring module 6 to move within a range of a horizontal angle of 0-360 degrees and a pitch angle of-45 degrees to +45 degrees so as to detect the target.
In practical applications, optionally, a zoom lens group is built in the observation range module 6.
In practical applications, the zoom ratio of the zoom lens group 5 is optionally 40 times.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Other embodiments than the above examples may be devised by those skilled in the art based on the foregoing disclosure, or by adapting and using knowledge or techniques of the relevant art, and features of various embodiments may be interchanged or substituted and such modifications and variations that may be made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the following claims.
Claims (6)
1. A self-focusing laser dazzling system for realizing laser high-uniformity far-field light spots is characterized by comprising a laser (1), an optical ladder beam splitter (2), a rotary scattering sheet (3), an energy transmission optical fiber waveguide (4), a zoom lens group (5), an observation and distance measurement module (6), a cloud deck (7) and a control module (8); the laser (1) outputs high-coherence laser, a plurality of beams of laser with lower coherence are obtained through the optical ladder beam splitter (2), the plurality of beams of laser with lower coherence transmit and further reduce the coherence among the beams of laser through the rotary scattering sheet (3) to obtain low-coherence laser beams, the low-coherence laser beams are guided into the energy-transmitting optical fiber waveguide (4), the energy-transmitting optical fiber waveguide (4) is a polygonal core diameter energy-transmitting optical fiber waveguide, and after shaping and homogenizing are carried out through the polygonal core diameter energy-transmitting optical fiber waveguide, light spots with uniform height are obtained at the outlet of the waveguide; the shaped and homogenized light spots are imaged and projected to different target distances by using a zoom lens group (5), so that high-uniformity far-field glare light spots at different target distances are obtained.
2. The self-focusing laser dazzling system for achieving laser high-uniformity far-field light spots is characterized by comprising an observation and distance measuring module (6), a cloud deck (7) and a control module (8), wherein the observation and distance measuring module (6) is used for identifying a target and distance information of the target, a data output end of the observation and distance information of the target is connected with an input end of the control module (8), a first control output end of the control module (8) is connected with the cloud deck (7) and used for driving the cloud deck (7) to track the target, and a second control output end of the control module (8) is connected with a zoom lens group (5) and used for driving the zoom lens group (5) to image uniform light spots to the targets with different distances; and a third control output end of the control module (8) is connected with the laser (1) and is used for controlling the laser output power according to the target information and the atmospheric condition.
3. A self-focusing laser glare system for achieving high laser uniformity of a far-field spot according to claim 1, wherein said laser (1) comprises a 532nm green pulse laser.
4. The self-focusing laser dazzling system for achieving laser high-uniformity far-field light spots according to claim 1, wherein the control module (8) drives the pan-tilt (7) to carry the observation and distance measurement module (6) to move within a range of a horizontal angle of 0-360 degrees and a pitch angle of-45 degrees to +45 degrees so as to detect a target.
5. The self-focusing laser dazzling system for achieving laser high-uniformity far-field spot according to claim 1, characterized in that the viewing range module (6) is built-in with a zoom lens group.
6. A self-focusing laser glare system for achieving laser high uniformity of far field spots according to claim 1, wherein the zoom ratio of said zoom lens group (5) is 40 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111551113.7A CN114114704A (en) | 2021-12-17 | 2021-12-17 | Self-focusing laser dazzling system for realizing high-uniformity far-field laser spot |
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| CN202111551113.7A CN114114704A (en) | 2021-12-17 | 2021-12-17 | Self-focusing laser dazzling system for realizing high-uniformity far-field laser spot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221450A1 (en) * | 2022-05-18 | 2023-11-23 | 华为技术有限公司 | Three-dimensional information measurement apparatus and measurement method and electronic device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201986068U (en) * | 2011-02-18 | 2011-09-21 | 武汉华之洋光电系统有限责任公司 | Image monitoring device with laser glaring function |
| CN102496230A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Automatic multi-beam laser active imaging alarm system |
| CN105866969A (en) * | 2016-03-03 | 2016-08-17 | 北京应用物理与计算数学研究所 | Method of increasing laser far-field light spot uniformity based on light ladder |
| CN205485084U (en) * | 2016-02-04 | 2016-08-17 | 福建中科晶创光电科技有限公司 | Laser dissipation spot system |
| CN106291965A (en) * | 2016-08-26 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of without speckle tricolor laser light source and laser projection system |
| CN107040308A (en) * | 2017-04-27 | 2017-08-11 | 中国科学院长春光学精密机械与物理研究所 | A kind of Laser Atmospheric Transmission turbulent flow simulation and far-field spot detector |
| CN107978209A (en) * | 2017-12-08 | 2018-05-01 | 中国科学院西安光学精密机械研究所 | Long-range Fourier's telescope image-forming demonstration system |
| CN113466889A (en) * | 2021-08-04 | 2021-10-01 | 江苏亮点光电科技有限公司 | Long-distance large-spot laser dazzling system |
| CN216792599U (en) * | 2021-12-17 | 2022-06-21 | 中国工程物理研究院应用电子学研究所 | Self-focusing laser dazzling system for realizing high-uniformity laser far-field light spot |
-
2021
- 2021-12-17 CN CN202111551113.7A patent/CN114114704A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201986068U (en) * | 2011-02-18 | 2011-09-21 | 武汉华之洋光电系统有限责任公司 | Image monitoring device with laser glaring function |
| CN102496230A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Automatic multi-beam laser active imaging alarm system |
| CN205485084U (en) * | 2016-02-04 | 2016-08-17 | 福建中科晶创光电科技有限公司 | Laser dissipation spot system |
| CN105866969A (en) * | 2016-03-03 | 2016-08-17 | 北京应用物理与计算数学研究所 | Method of increasing laser far-field light spot uniformity based on light ladder |
| CN106291965A (en) * | 2016-08-26 | 2017-01-04 | 湖北久之洋红外系统股份有限公司 | A kind of without speckle tricolor laser light source and laser projection system |
| CN107040308A (en) * | 2017-04-27 | 2017-08-11 | 中国科学院长春光学精密机械与物理研究所 | A kind of Laser Atmospheric Transmission turbulent flow simulation and far-field spot detector |
| CN107978209A (en) * | 2017-12-08 | 2018-05-01 | 中国科学院西安光学精密机械研究所 | Long-range Fourier's telescope image-forming demonstration system |
| CN113466889A (en) * | 2021-08-04 | 2021-10-01 | 江苏亮点光电科技有限公司 | Long-distance large-spot laser dazzling system |
| CN216792599U (en) * | 2021-12-17 | 2022-06-21 | 中国工程物理研究院应用电子学研究所 | Self-focusing laser dazzling system for realizing high-uniformity laser far-field light spot |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221450A1 (en) * | 2022-05-18 | 2023-11-23 | 华为技术有限公司 | Three-dimensional information measurement apparatus and measurement method and electronic device |
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Application publication date: 20220301 |