A munition laser destruction device

Abstract

The application provides a kind of ammunition laser destruction device, including main module and auxiliary module.The main module includes fiber laser and laser head, the laser head has lens assembly, the lens assembly includes collimating mirror, front lens and rear lens, the front lens, rear lens and collimating mirror are coaxially installed, the front lens is located in front of collimating mirror, and the rear lens is located in front of front lens.The focal length of front lens is negative, the focal length of rear lens is positive, the distance between front lens and rear lens is adjustable, and front lens and rear lens are combined to form focusing lens group.Change the distance between two groups of lenses, the focal length value can be changed, so that the transmission distance and size of focused light spot are changed.The laser head of the ammunition laser destruction device of the application has a non-effective working interval d in front of the laser head, and the effective working interval D is on the side away from the laser head.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ammunition processing, in particular to a kind of ammunition laser destruction device. BACKGROUND

[0002] At present, weapons and equipment are eliminated ammunition, store over time ammunition, training, exercise and ammunition produced in the process of launching, and unqualified ammunition, these ammunition has great security risks, may explode under the action of external environment, seriously threaten the safety of surrounding personnel and equipment, therefore, measures need to be taken to destroy these ammunition.

[0003] In the process of destroying abandoned ammunition and removing ammunition, the traditional method is to use explosive sympathetic detonation method to destroy the target ammunition, which has long working time, splashing of debris, high cost, environmental pollution and great safety hazards. With the development of laser technology, laser ablation destruction of ammunition has become a better way of ammunition destruction.

[0004] However, the existing ammunition laser destruction device has low laser power, insufficient effective working distance, low laser energy utilization rate, low intelligence level and insufficient safety protection for surrounding personnel during the destruction process. Therefore, the present application designs an ammunition laser destruction device to solve the above problems. SUMMARY

[0005] The present application aims to provide an ammunition laser destruction device to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: an ammunition laser destruction device, comprising a main module and an auxiliary module, the auxiliary module is used to provide auxiliary functions such as fixing, aiming and power support, and the main module is mainly used to realize ideal laser output. The main module includes a fiber laser and a laser head, the laser head has a lens assembly, the lens assembly includes a collimating mirror, a front lens and a rear lens, the front lens, the rear lens and the collimating mirror are coaxially installed, the front lens is located in front of the collimating mirror, and the rear lens is located in front of the front lens. The focal length of the front lens is negative, the focal length of the rear lens is positive, the distance between the front lens and the rear lens is adjustable, and the front lens and the rear lens form a focusing lens group. Changing the distance between the two lens groups can change the focal length, thereby changing the transmission distance and size of the focused light spot.

[0007] The effective working distance of the conventional ammunition laser destruction device is generally 0m~300 / 400 / 500m, that is, the effective working distance extends from the vicinity of the laser head to the far place. The difference between the present application and the conventional ammunition laser destruction device is that the ammunition laser destruction device of the present application has a non-effective working interval d in front of the laser head, and the effective working interval D is on the side of the laser head away from the non-effective working interval d. When the ammunition is located in the non-effective working interval d, the laser destruction device cannot destroy the ammunition, and only when the ammunition is located in the effective working interval D, the laser destruction device can destroy the ammunition.

[0008] Since the ammunition may still splash during destruction, the design of the non-effective working interval d makes the ammunition laser destruction device of the present application safer for the staff compared with the conventional ammunition laser destruction device, and has a longer effective working distance away from the laser head, that is, the working distance is increased by the length of interval d. Moreover, at the same distance from the laser head, the laser spot of the present application is smaller than that of the conventional ammunition laser destruction device, has stronger explosive power and better energy utilization. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0010] Figure 1 A schematic diagram of an ammunition laser destruction device provided by the present application is shown in the figure.

[0011] Figure 2 A structural schematic diagram of the rear lens 1024 provided by the present application is shown in the figure.

[0012] Figure 3 A first structural schematic diagram of the laser head 102 provided by the present application is shown in the figure.

[0013] Figure 4 A second structural schematic diagram of the laser head 102 provided by the present application is shown in the figure.

[0014] Figure 5 A third structural schematic diagram of the laser head 102 provided by the present application is shown in the figure.

[0015] Figure 6 A fourth structural schematic diagram of the laser head 102 provided by the present application is shown in the figure.

[0016] Reference: 1, main module; 2, auxiliary module; 3, ammunition; 101, fiber laser; 102, laser head; 1022, focusing lens group; 1021, collimating mirror; 1023, front lens; 1024, rear lens; 1025, focus extension lens. DETAILED DESCRIPTION

[0017] In order to make the person skilled in the art better understand the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, and are not a limitation on the scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] Please refer to Figure 1 , Figure 1 A schematic diagram of a laser ammunition destruction device provided by the present application is shown in the figure. The laser ammunition destruction device includes a main module 1 and an auxiliary module 2. The auxiliary module 2 is used to provide auxiliary functions such as fixation, aiming and power support, and the main module 1 is mainly used to realize ideal laser output. The main module 1 includes a fiber laser 101 and a laser head 102. The laser head 102 includes a lens assembly, which includes a collimating mirror 1021, a front lens 1023 and a rear lens 1024. The front lens 1023, the rear lens 1024 and the collimating mirror 1021 are coaxially installed. The front lens 1023 is located in front of the collimating mirror 1021, and the rear lens 1024 is located in front of the front lens 1023. The focal length of the front lens 1023 is negative, and when the laser beam passes through the front lens 1023, the beam is expanded. The focal length of the rear lens 1024 is positive, and when the laser beam passes through the rear lens 1024, the rear lens 1024 has a focusing effect on the laser beam. The distance between the front lens 1023 and the rear lens 1024 is adjustable. The front lens 1023 and the rear lens 1024 combine to form a focusing lens group 1022. By changing the distance between the two lenses, the focal length value can be changed, thereby changing the transmission distance and spot size of the focused spot, and increasing the effective working distance of the laser ammunition destruction device.

[0019] The effective working distance of the conventional ammunition laser destruction device is generally 0m-300 / 400 / 500m, that is, the effective working distance extends from the vicinity of the laser head 102 to the far distance. The difference between the present application and the conventional ammunition laser destruction device is that the ammunition laser destruction device of the present application has a non-effective working interval d in front of the laser head 102, and the effective working interval D is on the side of the non-effective working interval d away from the laser head 102. When the ammunition 3 is located in the non-effective working interval d, the laser destruction device cannot destroy the ammunition 3, and only when the ammunition 3 is located in the effective working interval D, the laser destruction device can destroy the ammunition 3.

[0020] Since the ammunition may still splash when being destroyed, the design of the non-effective working interval d makes the present application safer for the staff compared with the conventional ammunition laser destruction device, and at the same time, has a longer effective working distance away from the laser head 102, which is about the length of the interval d. Moreover, at the same distance from the laser head 102, the laser spot of the present application is smaller than that of the conventional ammunition laser destruction device, and has a better energy utilization rate.

[0021] In an optional scheme, the non-effective working interval d is 10-50m.

[0022] In a preferred scheme, the non-effective working interval d is 20-40m.

[0023] In an optional scheme, the effective working interval D is greater than 300m.

[0024] In a preferred scheme, the effective working interval D is greater than 500m.

[0025] Please refer to Figure 2 , Figure 2 The structure schematic diagram of the rear lens 1024 provided by the present application is shown in the figure. In order to form the non-effective working interval d and realize the extension of the effective working interval D, the rear lens 1024 can be made thin from the thick rear lens 1024', at this time, the focal length F' also extends to the focal length F from the far distance, and according to the spherical optical correlation theory, when the rear lens 1024 is made thin, the beam waist diameter h of the thin rear lens 1024 is smaller than the beam waist diameter H of the thick rear lens 1024' at the same irradiation position, and the corresponding focused spot size is also smaller, which is beneficial to have a better energy utilization rate. Since the thinning of the rear lens 1024 is limited by the production process conditions, under the condition of no increase in size, thinning is easy to reach the limit, and further thinning of the rear lens 1024 has a very high processing cost. In order to make the focal length extend to the far distance, the rear lens 1024 can be made large, and when the rear lens 1024 is made large, the rear lens 1024 with smaller curvature can be obtained more easily, that is, the diameter of the rear lens 1024 is larger than that of the front lens 1023.

[0026] However, in order to achieve the desired effect, Figure 2 The design of the rear lens 1024 greatly increases the size of the laser head 102 in the vertical direction, and other lenses of the laser head 102 also need to reserve more space in the vertical direction, thereby increasing the overall volume of the ammunition laser destruction device. Relatively speaking, increasing the size of the laser head 102 in the horizontal direction does not require additional space for other lenses of the laser head 102, and has less impact on the overall volume of the ammunition laser destruction device.

[0027] Please refer to Figure 3 , Figure 3 The first structure diagram of the laser head 102 provided in the present application includes a lens assembly, which includes a collimating lens 1021, a front lens 1023, a rear lens 1024, and a focal length extension lens 1025. The front lens 1023, the rear lens 1024, the focal length extension lens 1025, and the collimating lens 1021 are coaxially installed. The front lens 1023 is located in front of the collimating lens 1021. The rear lens 1024 is located in front of the front lens 1023. The focal length extension lens 1025 is located in front of the rear lens 1024. The focal length of the front lens 1023 is negative, the focal length of the rear lens 1024 is positive, the distance between the front lens 1023 and the rear lens 1024 is adjustable, and the front lens 1023 and the rear lens 1024 combine to form a focusing lens group. Changing the distance between the two lens groups can change the focal length, thereby changing the transmission distance and size of the focused light spot. The focal length extension lens 1025 can extend the focal length to a farther distance. In this embodiment, the focal length extension lens 1025 is a convex lens, and the rear lens 1024 shown in the figure is a double-convex lens (not limiting the rear lens to be a double-convex lens). The focal length extension lens 1025 is a convex lens located outside the focal point F of the rear lens 1024, that is, on the side away from the rear lens 1024, so that the focal length can be extended to a farther distance.

[0028] In a preferred scheme, the curvature of the focal length extension lens 1025 is smaller than the curvature of the rear lens 1024, which can be more conducive to obtaining a smaller light spot.

[0029] Please refer to Figure 4 , Figure 4The second structure diagram of the laser head 102 provided in the present application is shown in Figure 6. In order to achieve the technical effect of extending the focal length to a farther distance and reducing the spot size, and to make the production process easier to implement, the focal length extending lens 1025 is a convex lens, which is located outside the focal point F of the rear lens 1024. The focal length extending lens 1025 is a plano-convex lens. Of course, the overall curvature of the focal length extending lens 1025 needs to be smaller than the curvature of the rear lens 1024. A biconvex lens means that the spherical surfaces on both sides of the lens are convex. A plano-convex lens means that one side of the lens is convex and the other side is flat.

[0030] Please refer to Figure 5 , Figure 5 The third structure diagram of the laser head 102 provided in the present application is shown in Figure 7. The focal length extending lens 1025 is a concave lens, which is located inside the focal point of the rear lens 1024, i.e. close to the rear lens 1024. This design can make the focal length extend to a farther distance. The light beam passing through the focal length extending lens 1025 can still form a focal point F on the outside, i.e. the outward expansion effect of the focal length extending lens 1025 on the light beam is relatively weak, so as to prevent the light beam from being diffused too much and the spot from being too large.

[0031] When the focal length extending lens 1025 is a convex lens, it needs to be located outside the focal point F of the rear lens 1024. In addition, the distance between the front lens 1023 and the rear lens 1024 is adjustable. By adjusting the front lens 1023 and the rear lens 1024, the effective working range is extended outwardly. Therefore, when the focal length extending lens 1025 is a convex lens, it is relatively difficult to be located outside the focal point F of the rear lens 1024. When adjusting the distance between the front lens 1023 and the rear lens 1024, it is easy to make the focal length extending lens 1025 located inside the focal point F of the rear lens 1024, and it is necessary to greatly increase the volume of the laser head 102 in the horizontal direction. However, when the focal length extending lens 1025 is a concave lens, it is relatively easy to be located inside the focal point of the rear lens 1024 in design. In addition, by adjusting the distance between the front lens 1023 and the rear lens 1024, it is still relatively easy to stably keep the focal length extending lens 1025 located inside the focal point of the rear lens 1024.

[0032] Please refer to Figure 6 , Figure 6 The fourth structure diagram of the laser head 102 provided in the present application is shown in Figure 8. The focal length extending lens 1025 is a plano-concave lens. A plano-concave lens means that one side of the lens is concave and the other side is flat. Of course, the light beam passing through the focal length extending lens 1025 can still form a focal point F on the outside. At this time, the production process is easier to implement the focal length extending lens 1025 to form a focal point F on the outside.

[0033] In an optional solution, the auxiliary module 2 comprises a support frame, a holder, a sight, a mobile power supply, etc. The support frame can be in the form of a tripod or a box with pulleys, and the above two designs of the support frame are currently commonly used designs, which are not limited herein; the holder can be a fixed holder or an electric holder, which provides a platform for keeping the overall device stable in use; the sight is used for aiming; and the mobile power supply provides power support for the device.

[0034] In an optional solution, a transmission optical fiber is further connected between the fiber laser 101 and the laser head 102.

[0035] In an optional solution, the ammunition laser destroyer can further comprise a handheld controller, and the handheld controller is internally provided with control software to realize control of automatic focusing lens groups, laser on / off, electric control holder direction and rotating speed, etc.

[0036] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device inherently includes the elements. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another same element in the process, method, article or device comprising the element. In addition, the above technical solutions provided by the embodiments of the present application have not been described in detail, so as not to be too verbose.

[0037] The principles and implementation modes of the present application are described by using specific examples herein, and the above description of the embodiments is only used to help understand the method and its core idea of the present application. It should be noted that, for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and the various embodiments of the present application can be combined, and these improvements, modifications and combinations also fall within the protection scope of the claims of the present application.

Claims

1. A munition laser destructor, characterized in that It includes a main module (1) and an auxiliary module (2). The main module (1) includes a fiber laser (101) and a laser head (102). The fiber laser (101) is connected to the laser head (102) in front. The laser head (102) includes a lens assembly, which includes a collimating lens (1021), a front lens (1023), and a rear lens (1024). The front lens (1023), the rear lens (1024), and the collimating lens (1021) are coaxially mounted. The front lens (1023) is located in front of the collimating lens (1021), and the rear lens (1024) is located in front of the front lens (1023). The focal length of the front lens (1023) is negative, the focal length of the rear lens (1024) is positive, the distance between the front lens (1023) and the rear lens (1024) is adjustable, and the front lens (1023) and the rear lens (1024) are combined to form a focusing lens group (1022). The laser head (102) has an ineffective working area d in front of it, and the effective working area D is located on the side of the ineffective working area d away from the laser head (102). The laser head (102) also includes a telephoto lens (1025), which is located in front of the rear lens (1024) and coaxially mounted with the rear lens (1024). The telephoto lens (1025) is used to extend the non-effective working range d. The extended focal length lens (1025) is a convex lens or a concave lens; When the extended focal lens (1025) is a convex lens, the extended focal lens (1025) is located in front of the rear lens (1024), and the extended focal lens (1025) is located outside the focal point of the rear lens (1024). The curvature of the extended focal lens (1025) is less than that of the rear lens (1024). When the extension lens (1025) is a concave lens, the extension lens (1025) is located in front of the rear lens (1024), and the extension lens (1025) is located inside the focal point of the rear lens (1024). The light beam passing through the extension lens (1025) can still form a focal point on the outside.

2. The munition laser destruction device of claim 1, wherein The non-effective working range d is 10 to 50 meters.

3. The munition laser destruction device of claim 1, wherein The non-effective working range d is 20 to 40 meters.

4. The ammunition laser destruction device according to claim 1, characterized in that... The effective working range D is greater than 300 meters.

5. The ammunition laser destruction device according to claim 1, characterized in that... The effective working range D is greater than 500 meters.

6. The ammunition laser destruction device according to claim 1, characterized in that... The diameter of the rear lens (1024) is longer than that of the front lens (1023).

7. The ammunition laser destruction device as described in claim 1, characterized in that, The extended focal length lens (1025) is a plano-convex lens.

8. The ammunition laser destruction device as described in claim 1, characterized in that, The extended focal length lens (1025) is a plano-concave lens.

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