CN110637513B - Novel light beam direction finder - Google Patents
Novel light beam direction finder Download PDFInfo
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- CN110637513B CN110637513B CN201010048893.9A CN201010048893A CN110637513B CN 110637513 B CN110637513 B CN 110637513B CN 201010048893 A CN201010048893 A CN 201010048893A CN 110637513 B CN110637513 B CN 110637513B
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Abstract
The invention provides a novel light beam direction finder which consists of two channels of observation aiming and laser emission. The observation aiming channel consists of a secondary mirror, a primary mirror, a lower reflective mirror, a spectroscope, an objective lens group and a high-resolution detector; the laser emission channel consists of a high-energy laser, a lens group, a spectroscope, a lower reflector, a primary mirror and a secondary mirror; the secondary mirror, the primary mirror, the lower light reflecting mirror and the spectroscope are shared by two channels. The secondary mirror and the primary mirror form a Cassegrain system with a large caliber and a long focal length; the primary mirror and the secondary mirror adopt aspheric surfaces to correct spherical aberration and coma aberration of the system; the objective lens group is arranged on the image space to correct curvature of field, astigmatism and distortion, and meets the requirements of long focal length and high resolution of the system. The high-energy laser beam is modulated by the lens group, the primary mirror and the secondary mirror, the laser divergence angle is reduced, and strong laser emitted by the laser is converged on a target after passing through the laser emission channel to form a light spot with the power density as high as possible. The beam director can be used for a high-energy laser weapon system.
Description
Technical Field
The invention relates to a novel beam director which is mainly applied to high-energy laser weapons for searching targets, locking targets, accurately tracking the targets, intercepting and destroying incoming missile (or flying) targets in real time by using modulated laser beams, and belongs to the technical fields of accurate tracking television imaging, aspheric imaging, laser beam modulation and the like.
Background
The subject of searching, locking and accurate tracking of targets is always the key point and hot point of optical research at home and abroad, many scholars and engineering technicians are also always dedicated to developing more accurate target tracking systems, at present, the laser technology of China is mainly used for aspects of laser ranging, trajectory measurement, atmospheric laser communication, optical fiber communication, weapon guidance, laser blinding and the like, a high-energy laser weapon which can destroy targets by high-energy laser is not developed, and a novel beam direction finder which is suitable for various platforms and has the functions of searching targets, locking targets, accurately tracking targets and intercepting and destroying incoming missile (or flying) targets in real time by using modulated laser beams is urgently needed.
Disclosure of Invention
The invention aims to provide a novel light beam director aiming at the current situation that the laser technology in China is mainly used for laser ranging, trajectory measurement, atmospheric laser communication, optical fiber communication, weapon guidance, laser blinding and the like and does not depend on a light beam director for destroying a target by high-energy laser.
In order to achieve the purpose, the technical scheme of the invention is as follows: a novel light beam direction finder is composed of an observation aiming channel for searching an incoming missile target, locking the target and tracking the target and a laser emission channel for emitting modulated laser beams by a high-energy laser to destroy the target.
The observation aiming channel consists of a secondary mirror, a primary mirror, a lower reflective mirror, a spectroscope, an objective lens group and a high-resolution detector; the laser emission channel consists of a high-energy laser, a lens group, a spectroscope, a lower reflector, a primary mirror and a secondary mirror, wherein the secondary mirror, the primary mirror, the lower reflector and the spectroscope are shared by the observation aiming channel and the laser emission channel.
The secondary mirror and the primary mirror form a Cassegrain system with a large caliber and a long focal length, and the primary mirror and the secondary mirror adopt aspheric surfaces to correct spherical aberration and coma aberration of the system; the objective lens group is arranged on the image space to correct curvature of field, astigmatism and distortion, and meets the requirements of long focal length and high resolution of the system.
The high-energy laser beam emitted by the high-energy laser is modulated by the lens group, the primary mirror and the secondary mirror, so that the divergence angle of the laser is reduced, and the strong laser emitted by the laser is converged on a target after passing through the laser emission channel to form a light spot with the power density as high as possible.
The lower reflector is arranged on the electrically controlled fine-tuning piezoelectric ceramic mirror base, so that the lower reflector can rotate in a certain range, the imaging position of a target moving far away on the high-resolution detector is unchanged, the image stabilization function and the target tracking function of the observation aiming channel are realized, and a laser spot emitted by the laser emission channel is always locked at a certain fixed part of the target.
All optical parts through which high-energy laser passes are made of high-temperature resistant materials with extremely low thermal expansion coefficients. Wherein the secondary mirror and the primary mirror are made of microcrystalline glass; the lens group, the spectroscope and the lower reflector are made of quartz glass; all the laser reflecting surfaces, namely the laser reflecting surfaces of the secondary mirror, the primary mirror and the lower reflecting mirror, and the light splitting surface, namely the light splitting surface of the spectroscope adopt a reflecting film with a high laser damage threshold value; the laser antireflection surface-the lens group laser antireflection surface adopts an antireflection film with a high laser damage threshold value, so that the optical part can bear the requirement of high-energy laser irradiation for a long time.
The invention has the beneficial effects that: the beam director can be used for a high-energy laser weapon system, and can track and destroy targets such as aerial missiles, enemy planes and the like in the air, on the sea and on the land. When the system is widely equipped to troops, the national defense strength of China can be greatly improved, and considerable economic benefits can be brought.
Drawings
The attached drawing is a schematic diagram of the novel light beam direction finder of the invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in the attached drawing, the novel light beam direction finder of the invention consists of two channels, namely an observation aiming channel for searching an incoming missile target, locking the target and tracking the target and a laser emission channel for destroying the target by using modulated laser beams emitted by a high-energy laser.
The observation aiming channel consists of a secondary mirror 1, a primary mirror 2, a lower reflective mirror 3, a spectroscope 4, an objective lens group 5 and a high-resolution detector 6; the laser emission channel consists of a high-energy laser 8, a lens group 7, a spectroscope 4, a lower reflector 3, a primary mirror 2 and a secondary mirror 1, the primary mirror 2, the lower reflector 3 and the spectroscope 4 are shared by the observation aiming channel and the laser emission channel due to the limitation of weight and volume, appropriate variables are selected during design, and the performance of the observation aiming channel and the performance of the laser emission channel are considered at the same time.
The battle technical indexes require long focal length, the effective clear aperture is large, the view field is small, the system resolution is high, the overall requirements of the battle technical indexes of the product are integrated, and the Cassegrain system is selected as the main optical system of the product. Considering that the product is finally installed on a tracking platform for use and has certain load and rotation radius limitation, under the condition of ensuring battle technical indexes and structural strength, factors of reducing the weight of the product, reducing the volume of the product and the like are mainly considered, and finally determining that the observation aiming channel and the laser emission channel share a Cassegrain system.
Since the sighting channel is a channel for searching for a target and locking and tracking the target, the sighting channel should have good imaging quality and high resolution, and when the optical system is designed, the aberration (spherical aberration, coma, field curvature, astigmatism, distortion, etc.) of the system must be corrected. The secondary mirror 1 and the primary mirror 2 form a large-caliber long-focus Cassegrain system, and the primary mirror 2 and the secondary mirror 1 of the Cassegrain system adopt aspheric surfaces to correct spherical aberration and coma aberration of the system; the objective lens group 5 is arranged on the image side to correct curvature of field, astigmatism and distortion, and meets the requirements of long focal length and high resolution of the system.
Because the divergence angle of the high-energy laser emitted by the laser is larger, if the high-energy laser directly irradiates on a target, a part of laser beam is greatly lost along with the increase of the distance, so that the energy of the laser is weakened, and the efficiency of destroying or destroying the target is influenced. Therefore, the high-energy laser beam emitted by the high-energy laser 8 is modulated by the lens group 7, the primary mirror 2 and the secondary mirror 1, the laser divergence angle is reduced, and the strong laser emitted by the high-energy laser 8 is converged on a target after passing through a laser emission channel to form a light spot with the power density as high as possible.
In order to realize the functions of image stabilization and tracking, the lower reflector 3 is arranged on the electronic control fine tuning piezoelectric ceramic mirror base, so that the lower reflector 3 can rotate in a certain range, the imaging position of a target moving at a distance on the high-resolution detector is unchanged, the functions of image stabilization and tracking of the target by the observation aiming channel are realized, and a laser spot emitted by the laser emission channel is always locked at a certain fixed part of the target.
Because the laser emits high-energy laser, optical parts through which the high-energy laser passes are made of high-temperature resistant materials with extremely low thermal expansion coefficients. Wherein the secondary mirror 1 and the primary mirror 2 are made of microcrystalline glass; the lens group 7, the spectroscope 4 and the lower reflector 3 are made of quartz glass; all the laser reflecting surfaces, namely the secondary mirror 1, the primary mirror 2 and the laser reflecting surface of the lower reflecting mirror 3, and the light splitting surface, namely the light splitting surface of the spectroscope 4 adopt a reflecting film with a high laser damage threshold value; the laser antireflection surface-the laser antireflection surface of the lens group 7 adopts an antireflection film with a high laser damage threshold value, so that the optical part can bear the requirement of high-energy laser irradiation for a long time.
The beam director designed and produced by the invention can be used for a high-energy laser weapon system to track and destroy targets such as aerial missiles, enemy planes and the like in the air, on the sea and on the land. When the system is widely equipped to troops, the national defense strength of China can be greatly improved, and considerable economic benefits can be brought. Therefore, the beam director has wide application prospect in high-energy laser weaponry.
Claims (4)
1. A novel light beam direction finder comprises an observation aiming channel for searching an incoming missile target, locking the target and tracking the target and a laser emission channel for destroying the target by a modulated laser beam emitted by a high-energy laser, wherein the observation aiming channel comprises a secondary mirror, a primary mirror, a lower reflective mirror, a spectroscope, an objective lens group and a high-resolution detector; the laser emission channel consists of a high-energy laser, a lens group, a spectroscope, a lower reflector, a primary mirror and a secondary mirror, wherein the secondary mirror, the primary mirror, the lower reflector and the spectroscope are shared by the observation aiming channel and the laser emission channel; the high-energy laser emits laser light, the laser light passes through the lens group and then passes through the spectroscope, reflected light rays pass through the lower reflector and then sequentially pass through the primary mirror and the secondary mirror, and refracted light rays pass through the objective lens group and then enter the high-resolution detector.
2. The beam director according to claim 1, wherein: the secondary mirror and the primary mirror form a large-caliber long-focus Cassegrain system, and the primary mirror and the secondary mirror of the Cassegrain system adopt aspheric surfaces to correct spherical aberration and coma aberration of the system; the objective lens group is arranged on the image space to correct curvature of field, astigmatism and distortion, and meets the requirements of long focal length and high resolution of the system.
3. The beam director according to claim 1, wherein: the high-energy laser beam emitted by the high-energy laser is modulated by the lens group, the primary mirror and the secondary mirror, so that the laser divergence angle is reduced, and the high-energy laser beam emitted by the high-energy laser is converged on a target after passing through the laser emission channel to form a light spot.
4. The beam director according to claim 1, wherein: the lower reflector is arranged on the electrically controlled fine-tuning piezoelectric ceramic mirror base, so that the lower reflector can rotate in a certain range, the imaging position of a target moving far away on the high-resolution detector is unchanged, the image stabilization function and the target tracking function of the observation aiming channel are realized, and a laser spot emitted by the laser emission channel is always locked at a certain fixed part of the target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010048893.9A CN110637513B (en) | 2010-06-30 | 2010-06-30 | Novel light beam direction finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010048893.9A CN110637513B (en) | 2010-06-30 | 2010-06-30 | Novel light beam direction finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110637513B true CN110637513B (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010048893.9A Expired - Fee Related CN110637513B (en) | 2010-06-30 | 2010-06-30 | Novel light beam direction finder |
Country Status (1)
| Country | Link |
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| CN (1) | CN110637513B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579874A (en) * | 2019-09-09 | 2019-12-17 | 重庆连芯光电技术研究院有限公司 | compact structure's self-adaptation laser defense system |
| CN111665020A (en) * | 2020-07-16 | 2020-09-15 | 中国人民解放军空军工程大学 | Method for determining shooting distance and shooting window of laser weapon |
-
2010
- 2010-06-30 CN CN201010048893.9A patent/CN110637513B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579874A (en) * | 2019-09-09 | 2019-12-17 | 重庆连芯光电技术研究院有限公司 | compact structure's self-adaptation laser defense system |
| CN111665020A (en) * | 2020-07-16 | 2020-09-15 | 中国人民解放军空军工程大学 | Method for determining shooting distance and shooting window of laser weapon |
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Legal Events
| Date | Code | Title | Description |
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| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DC01 | Secret patent status has been lifted | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20210630 |