CN113310356A - Light spot self-adaptive laser dazzler and control method thereof - Google Patents
Light spot self-adaptive laser dazzler and control method thereof Download PDFInfo
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- CN113310356A CN113310356A CN202110584987.6A CN202110584987A CN113310356A CN 113310356 A CN113310356 A CN 113310356A CN 202110584987 A CN202110584987 A CN 202110584987A CN 113310356 A CN113310356 A CN 113310356A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H13/00—Means of attack or defence not otherwise provided for
- F41H13/0043—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target
- F41H13/005—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target the high-energy beam being a laser beam
- F41H13/0056—Directed energy weapons, i.e. devices that direct a beam of high energy content toward a target for incapacitating or destroying the target the high-energy beam being a laser beam for blinding or dazzling, i.e. by overstimulating the opponent's eyes or the enemy's sensor equipment
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a spot self-adaptive laser dazzler and a control method thereof, which are characterized in that: the method comprises the following steps: a laser for outputting laser light; the collimating lens group collimates the laser; the electric zooming optical module zooms the laser collimated by the collimating lens group, and adjusts the focal length of the laser to ensure that the light spots of the far-distance laser are basically consistent; the servo motor is used for adjusting the focal length of the electric zooming optical module; the laser ranging module is used for testing the distance between a target and a laser; the self-adaptive feedback control system is used for electrically controlling and connecting the laser, the laser ranging module and the servo motor; the control method comprises the following steps: the laser ranging module measures the target distance and feeds data back to the self-adaptive feedback control system, and the self-adaptive feedback control system controls the servo motor to work and is used for adjusting the focal length and the laser beam divergence angle of the laser output by the electric zooming optical module. The invention realizes the self-adaptive adjustment of the light spot, is safer and reduces the cost.
Description
Technical Field
The invention relates to a laser -mesh device, in particular to a spot self-adaptive laser dazzler and a control method thereof.
Background
The conventional laser dazzler generally adopts a green laser which is most sensitive to human eyes as a light source, the wavelength range of the laser is 520-532 nm, the laser passes through a beam expanding collimating optical system or a focusing lens group to form laser with a certain spot size and then is emitted, and the laser acts on targets or people groups with different distances and sizes to realize the dazzling effect.
An optical system in an existing laser dazzler generally adopts a beam expanding collimation system with fixed multiple or a focusing optical system with fixed focal length, and in the using process, the optical system can only be suitable for dazzling illumination within a certain specific distance or a very small distance range. The beam expanding collimation system can theoretically compress the divergence angle of a laser beam to the order of several mrad, but if the laser output with a small divergence angle is required to be simultaneously realized in a near field (within 50m for example) and a far field (1 km for example), the zoom beam expanding collimation system needs to be designed, and in order to take account of the small divergence angle of the far field and the large divergence angle of the near field, the aperture of the beam expanding system is large, so that the cost is greatly increased, and the whole volume and the weight of the laser dazzling device are increased. Even if the factors of cost and volume and weight are not considered in the design, in order to keep constant laser spots at different positions of the laser dazzler, the beam expansion multiple of the beam expansion system needs to be manually set, and the operation is difficult in the actual use process. Similarly, if a focusing optical system with a fixed focal length is adopted, since the divergence angle of the laser beam is not adjustable, it is impossible to automatically adjust the laser spot within the effective working distance range, and it is usually necessary to replace the lenses with other focal lengths in order to achieve different working distances.
Above-mentioned laser dazzler can't realize laser facula self-adaptation control, in the in-service use process, need artifical manual regulation to expand the zoom multiple of beam collimation system, or change the camera lens of other focuses, when changing and expand a bundle multiple or camera lens focus, it is less in order to satisfy far field laser facula, need the high power to expand the beam, the laser beam divergence angle compresses to very little value, near field laser facula is very little like this, laser power density just can be very big, exceed people's eye safety range even, in-service use, there is the potential safety hazard of injury people's eye.
Disclosure of Invention
The invention aims to provide a facula self-adaptive laser dazzler and a control method thereof, and by using the structure and the method, the device can keep constant facula size at each position in an effective action range, realize the self-adaptive control of facula, ensure constant laser power and ensure the use safety.
In order to achieve the purpose, the invention adopts the technical scheme that: a spot adaptive laser glazer, comprising:
the laser is coupled to the optical fiber output laser through the internal fast and slow axial compression focusing;
the collimating lens group is positioned on the light path of the laser, collimates the laser output by the optical fiber and compresses a laser beam divergence angle;
the electric zooming optical module zooms the laser collimated by the collimating lens group, and adjusts the focal length of the optical lens to ensure that the light spots of the far-distance laser are basically consistent;
the servo motor is arranged outside the electric zooming optical module, a movable lens is arranged in the electric zooming optical module, and a servo motor control shaft is connected with the movable lens in the electric zooming optical module and used for adjusting the focal length of the electric zooming optical module;
the laser ranging module is used for testing the distance between a target and a laser;
the self-adaptive feedback control system is used for electrically controlling the laser, the laser ranging module and the servo motor, the distance measured by the laser ranging module is fed back to the self-adaptive feedback control system to control a laser light path emitted by the laser, control the rotation of the servo motor control shaft and adjust the movement of the movable lens, and is used for adjusting the laser focal length of the electric zooming optical module and the size of a laser emitting light spot.
In the technical scheme, the electric zooming optical module comprises a plurality of groups of fixed lenses and a plurality of groups of movable lenses, the fixed lenses comprise a group of front end fixed lenses and a plurality of groups of rear end fixed lenses, the movable lenses are movably arranged between the front end fixed lenses and the plurality of groups of rear end fixed lenses, laser emitted by the collimating lens group is output through the front end fixed lenses, the movable lenses and the plurality of groups of rear end fixed lenses in sequence, and the movable lenses move back and forth to adjust the focal length and the light spot size of the output laser.
In the above technical solution, the optical axes of the electric zoom optical module and the laser ranging module are identical.
In the technical scheme, the laser is a 520-530 nm semiconductor green laser.
In the above technical solution, the laser ranging module is a 1535nm laser ranging module.
In order to achieve the above purpose, the present invention adopts a control method of a spot adaptive laser dazzler, which comprises the following steps:
firstly, the laser ranging module feeds back the acquired distance information to a self-adaptive feedback control system;
secondly, the adaptive feedback control system analyzes the distance information and converts the required focal length at the distance according to the size of the laser spot required to be controlled;
and the self-adaptive feedback control system controls the servo motor to work, a control shaft of the servo motor works, and the control shaft drives the movable lens to move by a corresponding distance, so that the movable lens moves to a corresponding position, and the self-adaptive adjustment of the focal length and the size of the light spot is realized.
In the above technical solution, the spot sizes of the output laser within the effective working distance are uniform.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, the target is measured by the laser distance measurement module, the obtained information is fed back to the adaptive feedback control system, the target distance is converted into a parameter for controlling a servo motor in the electric zooming optical module according to the target distance, and the equivalent focal length of the electric zooming optical module is rapidly changed, so that the divergence angle of a laser beam is changed, the constant spot size of each position of a laser mesh device in an effective acting distance is kept, the adaptive control of the spots is realized, the laser power is constant, the harm to human eyes is prevented, and the potential safety hazard is reduced; meanwhile, the size of the equipment can be reduced, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram in a first embodiment of the present invention.
Wherein: 1. a laser; 2. a collimating lens group; 3. an electrically variable focus optical module; 4. a servo motor; 5. A movable lens; 6. a laser ranging module; 7. an adaptive feedback control system; 8. a lens is fixed at the front end; 9. a lens is fixed at the rear end; 10. an optical fiber.
Detailed Description
The invention is further described with reference to the following figures and examples:
the first embodiment is as follows: referring to fig. 1, a spot-adaptive laser dazzler includes:
the laser device 1 is coupled to the optical fiber 10 through the compression focusing of an internal fast and slow axis to output laser;
the collimating lens group 2 is positioned on the light path of the laser, collimates the laser output by the optical fiber and compresses a laser beam divergence angle;
the electric zooming optical module 3 zooms the laser collimated by the collimating lens group, and adjusts the focal length of the optical lens to make the light spots of the far and near laser basically consistent;
the servo motor 4 is arranged outside the electric zooming optical module, a movable lens is arranged in the electric zooming optical module, and a servo motor control shaft is connected with a movable lens 5 in the electric zooming optical module and used for adjusting the focal length of the electric zooming optical module;
the laser ranging module 6 is used for testing the distance between a target and a laser;
and the self-adaptive feedback control system 7 is used for electrically controlling the laser, the laser ranging module and the servo motor, feeding back the distance measured by the laser ranging module to the self-adaptive feedback control system, controlling a laser light path emitted by the laser, controlling the rotation of a control shaft of the servo motor and adjusting the movement of the movable lens, and is used for adjusting the laser focal length of the electric zooming optical module and the size of a laser emitting light spot.
In this embodiment, the adaptive feedback control system is a controller, a calculation program corresponding to the distance is pre-prepared inside the adaptive feedback control system, a distance measurement module is used for measuring the distance of a target to be measured, distance information is fed back to the adaptive feedback control system, especially, the distance information is automatically calculated and converted into a focal length position required to be adjusted by the electric zoom optical module, and simultaneously converted into an angle required to be rotated by a control shaft of a servo motor, and then the servo motor is controlled to work, so that the servo motor drives a movable lens inside the adaptive feedback control system to adjust the focal length of the laser, and during laser focal length adjustment, the divergence angle of the laser beam is changed at the same time, so that the spot size of the output laser spot in the effective acting distance range of the mesh laser is kept constant, thereby realizing adaptive adjustment of the spot, ensuring that the laser power is relatively constant, and ensuring the safety of human eyes, an mesh effect can also be achieved. Wherein, in the present embodiment, the peak power of the laserThe specific density is always 0.2mW/cm2～2.5mW/cm2Within the range.
Referring to fig. 1, the electric zoom optical module includes a plurality of groups of fixed lenses and a plurality of groups of movable lenses, the fixed lenses include a group of front end fixed lenses 8 and a plurality of groups of rear end fixed lenses 9, the movable lenses are movably disposed between the front end fixed lenses and the plurality of groups of rear end fixed lenses, laser emitted by the collimating lens group is sequentially output through the front end fixed lenses, the movable lenses and the plurality of groups of rear end fixed lenses, and the movable lenses move back and forth to adjust the focal length and the light spot size of the output laser. Wherein the fixed lens and the movable lens constitute an optical lens.
In this embodiment, the setting of multiunit fixed lens and movable lens, movable lens can adjust the focus and the facula size of output laser for fixed lens's removal, guarantee that the size of each position laser facula is unanimous in effective effect scope.
The electric zooming optical module is consistent with the optical axis of the laser ranging module. The optical axes of the two are consistent, so that the optical axis can be ensured to act on the same target, and the self-adaptive adjustment of target light spots is ensured.
Wherein the laser is a 520 nm-530 nm semiconductor green laser. According to different action distances, different powers of 500 mW-10W can be selected.
The laser ranging module is a 1535nm laser ranging module. The laser ranging module is the laser ranging module of eye safety wavelength like this, can prevent to cause the injury to the human eye.
In order to achieve the above purpose, the present invention adopts a control method of a spot adaptive laser dazzler, which comprises the following steps:
firstly, the laser ranging module feeds back the acquired distance information to a self-adaptive feedback control system;
secondly, the adaptive feedback control system analyzes the distance information and converts the required focal length at the distance according to the size of the laser spot required to be controlled;
and the self-adaptive feedback control system controls the servo motor to work, a control shaft of the servo motor works, and the control shaft drives the movable lens to move by a corresponding distance, so that the movable lens moves to a corresponding position, and the self-adaptive adjustment of the focal length and the size of the light spot is realized.
The spot size of the output laser within the effective working distance is consistent.
In this embodiment, when the action distance range is the closest target laser meshes, after the laser ranging module obtains the distance, the adaptive feedback control system controls the servo motor to work, the focal length is controlled to be the minimum value through the electric zoom optical module, the divergence angle of the laser beam is at the maximum value, and the size of the laser spot irradiated to the closest target is D0。
When the farthest target in the action distance range is subjected to laser meshes, after the laser ranging module obtains the distance, the self-adaptive feedback control system controls the servo motor to work, the focal length is controlled to be at the maximum value through the electric zooming optical module, the divergence angle of the laser beam is at the minimum value, and the size of the laser spot irradiating to the farthest target is also D0。
When the target is at any position between the nearest and the farthest action distance range, the laser ranging module obtains the distance information, the servo motor is controlled to work by the adaptive feedback control system, the corresponding focal length of the output laser in the electric zooming optical module is adjusted, the divergence angle of the laser beam is adjusted to an appropriate value, and the size of the light spot of the output laser on the target is ensured to be D0. Therefore, the self-adaptive control of the laser spots is realized, the full-automatic control is realized, manual regulation is not needed, the output laser power is stable, and the use safety is ensured.
Claims (7)
1. A spot-adaptive laser dazzler, characterized by: the method comprises the following steps:
the laser is coupled to the optical fiber output laser through the internal fast and slow axial compression focusing;
the collimating lens group is positioned on the light path of the laser, collimates the laser output by the optical fiber and compresses a laser beam divergence angle;
the electric zooming optical module zooms the laser collimated by the collimating lens group, and adjusts the focal length of the optical lens to ensure that the light spots of the far-distance laser are basically consistent;
the servo motor is arranged outside the electric zooming optical module, a movable lens is arranged in the electric zooming optical module, and a servo motor control shaft is connected with the movable lens in the electric zooming optical module and used for adjusting the focal length of the electric zooming optical module;
the laser ranging module is used for testing the distance between a target and a laser;
the self-adaptive feedback control system is used for electrically controlling the laser, the laser ranging module and the servo motor, the distance measured by the laser ranging module is fed back to the self-adaptive feedback control system to control a laser light path emitted by the laser, control the rotation of the servo motor control shaft and adjust the movement of the movable lens, and is used for adjusting the laser focal length of the electric zooming optical module and the size of a laser emitting light spot.
2. The spot-adaptive laser blinder according to claim 1, wherein: the electric zooming optical module comprises a plurality of groups of fixed lenses and a plurality of groups of movable lenses, the fixed lenses comprise a group of front end fixed lenses and a plurality of groups of rear end fixed lenses, the movable lenses are movably arranged between the front end fixed lenses and the plurality of groups of rear end fixed lenses, laser emitted by the collimating lens group is output through the front end fixed lenses, the movable lenses and the plurality of groups of rear end fixed lenses in sequence, and the movable lenses move back and forth to adjust the focal length and the light spot size of the output laser.
3. The spot-adaptive laser blinder according to claim 1, wherein: and the electric zooming optical module is consistent with the optical axis of the laser ranging module.
4. The spot-adaptive laser blinder according to claim 1, wherein: the laser is a 520 nm-530 nm semiconductor green laser.
5. The spot-adaptive laser blinder according to claim 1, wherein: the laser ranging module is a 1535nm laser ranging module.
6. A control method of a facula self-adaptive laser dazzler comprises the following steps:
firstly, the laser ranging module feeds back the acquired distance information to a self-adaptive feedback control system;
secondly, the adaptive feedback control system analyzes the distance information and converts the required focal length at the distance according to the size of the laser spot required to be controlled;
and the adaptive feedback control system controls the servo motor to work, a control shaft of the servo motor works, and the control shaft drives the movable lens to move by a corresponding distance, so that the movable lens moves to a corresponding position, and the adaptive adjustment of the focal length and the size of the light spot is realized.
7. The method of controlling a spot-adaptive laser blinder according to claim 6, wherein: the spot size of the output laser within the effective working distance is consistent.
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| CN202110584987.6A CN113310356A (en) | 2021-05-27 | 2021-05-27 | Light spot self-adaptive laser dazzler and control method thereof |
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| CN202110584987.6A CN113310356A (en) | 2021-05-27 | 2021-05-27 | Light spot self-adaptive laser dazzler and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114384535A (en) * | 2022-01-11 | 2022-04-22 | 江苏亮点光电研究有限公司 | Target tracking peep-proof system |
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| CN102175092A (en) * | 2011-01-11 | 2011-09-07 | 河南华阳装备制造有限公司 | Pistol-type laser dazzling device |
| CN204718491U (en) * | 2015-06-16 | 2015-10-21 | 陕西艾利克斯光电科技有限公司 | A kind of carrier-borne laser dazzling device |
| CN108227787A (en) * | 2018-02-28 | 2018-06-29 | 中国人民武装警察部队工程大学 | Single-soldier backpack type laser glaring disperses device and its application method |
| CN108375321A (en) * | 2018-03-07 | 2018-08-07 | 深圳新亮智能技术有限公司 | The adjustable laser dazzling device of laser beam divergent angle |
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2021
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201764895U (en) * | 2010-08-03 | 2011-03-16 | 西安华科光电有限公司 | Multifunctional self-focusing laser glaring device |
| CN102175092A (en) * | 2011-01-11 | 2011-09-07 | 河南华阳装备制造有限公司 | Pistol-type laser dazzling device |
| CN204718491U (en) * | 2015-06-16 | 2015-10-21 | 陕西艾利克斯光电科技有限公司 | A kind of carrier-borne laser dazzling device |
| CN108227787A (en) * | 2018-02-28 | 2018-06-29 | 中国人民武装警察部队工程大学 | Single-soldier backpack type laser glaring disperses device and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114384535A (en) * | 2022-01-11 | 2022-04-22 | 江苏亮点光电研究有限公司 | Target tracking peep-proof system |
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