Lightweight adjustable anisotropic hybrid field shielding device

Abstract

The application provides a lightweight adjustable anisotropic mixed field shielding device, and relates to the field of camera irradiation protection.The device comprises an overall upper fixed end plate, an overall lower fixed end plate, and three groups of main shielding components arranged uniformly in the circumferential direction of the device central axis between the overall upper fixed end plate and the overall lower fixed end plate; the upper and lower ends of the three groups of main shielding components are rotationally connected with the overall upper fixed end plate and the overall lower fixed end plate respectively, and jointly enclose a camera mounting cavity located on the device central axis; the three groups of main shielding components are spliced to form three coaxially nested composite shielding layers from the inside to the outside; each group of main shielding components comprises a transverse shielding component and a longitudinal shielding component.The application adopts the above lightweight adjustable anisotropic mixed field shielding device, and overcomes the deficiencies of the prior art in mixed radiation field protection capability, targeted shielding efficiency, dynamic adjustment flexibility and scene adaptation versatility.

Description

Technical Field

[0001] This invention relates to the field of camera radiation protection, and in particular to a lightweight, adjustable anisotropic hybrid field shielding device. Background Technology

[0002] In high-radiation applications such as nuclear industry, high-energy physics experiments, and radiotherapy, camera equipment serves as a crucial remote visual monitoring tool, and its long-term stable operation directly impacts operational safety and data acquisition quality. Currently, camera protection devices in these environments generally employ fixed metal or alloy shielding shells to completely enclose the camera. Some high-end products further incorporate a single-axis pivot rotation structure, allowing the camera to switch between its working and shielded positions at limited angles. Furthermore, existing technologies have explored achieving a degree of directional protection by adding localized shielding blocks behind the camera module or sequentially arranging shielding plates along the optical path. These technical solutions have proven effective in specific scenarios, establishing a preliminary technical framework for camera radiation protection.

[0003] However, with the increasing complexity of nuclear facility operations and the diversification of radiation monitoring requirements, existing technologies have gradually revealed a series of bottlenecks. Firstly, in actual operating conditions, gamma rays and neutron rays often coexist, forming a mixed radiation field. Existing devices are mostly designed for a single type of radiation, making it difficult to effectively attenuate both types of radiation simultaneously in a mixed field, resulting in protection blind spots. Secondly, the sensitivity of different components inside the camera to radiation varies significantly. The failure threshold of core components such as the CMOS image sensor and main control circuit board is much lower than that of non-sensitive components such as the metal casing and cables. However, existing devices mostly adopt a uniform shielding strategy with full cavity coverage, resulting in over-protection of non-sensitive areas and insufficient protection of core areas. This not only increases the overall weight of the device but also reduces the protection efficiency of critical parts. Third, the irradiation field is usually non-uniformly distributed in space, and the camera's observation angle needs to be frequently adjusted during continuous operation. However, existing adjustable structures can only achieve mechanical rotation in a single dimension and at a limited angle, and cannot synchronously adjust the coverage orientation and range of the shielding layer according to changes in the irradiation field distribution or changes in the observation angle. This easily leads to blind spots in shielding and obstruction of the observation field, making it difficult to meet the needs of dynamic continuous monitoring. Fourth, existing devices are mostly rigidly bound to specific camera models, and the size of the shielding cavity is fixed, making it impossible to adapt to different types and shapes of cameras, resulting in poor versatility in various scenarios.

[0004] The root cause of the aforementioned bottleneck lies in the fact that existing technologies lack targeted designs for the anisotropic distribution characteristics of mixed radiation fields and fail to establish a dynamic mapping relationship between shielding capability and radiation direction, shielding range and sensitive areas.

[0005] Therefore, there is an urgent need for a lightweight protection solution that can perform differentiated zonal shielding based on the different types of rays in the irradiation field and can perform targeted reinforcement of sensitive components inside the camera. This would ensure comprehensive protection against mixed radiation fields while achieving overall lightweighting and versatility of the device, providing reliable technical support for camera monitoring in strong irradiation environments. Summary of the Invention

[0006] The purpose of this invention is to provide a lightweight, adjustable anisotropic hybrid field shielding device to overcome the many shortcomings of existing technologies in terms of hybrid radiation field protection capability, targeted shielding efficiency, dynamic adjustment flexibility, and scene adaptability. It can achieve efficient and coordinated shielding in a hybrid radiation field by partitioning and directional according to the difference in radiation direction. At the same time, it can implement precise targeted protection for sensitive components inside the camera, and achieve real-time flexible adaptation of the shielding layer when the camera's viewing angle is dynamically adjusted or the irradiation field distribution changes. It eliminates shielding blind spots and field of view obstruction. While ensuring all-round protection effectiveness, it achieves lightweight device and scene universality, providing an efficient, flexible, and reliable comprehensive protection solution for camera monitoring in strong radiation environments.

[0007] To achieve the above objectives, the present invention provides a lightweight adjustable anisotropic hybrid field shielding device, comprising an overall upper fixed end plate, an overall lower fixed end plate, and three sets of main shielding components evenly arranged circumferentially between the overall upper fixed end plate and the overall lower fixed end plate along the central axis of the device. The upper and lower ends of the three main shielding components are respectively rotatably connected to the upper fixed end plate and the lower fixed end plate of the whole, and together they enclose the camera mounting cavity located on the central axis of the device; The three main shielding components are spliced ​​together to form a three-layer composite shielding layer that is coaxially nested from the inside out; each main shielding component includes a transverse shielding component and a longitudinal shielding component.

[0008] Preferably, the three-layer composite shielding layer consists of, in order from the camera mounting cavity outwards, a lead main shielding component, a boron carbide-lead composite main shielding component, and a polyethylene-boron carbide-lead composite main shielding component.

[0009] Preferably, the transverse and longitudinal shielding components of the lead-based main shielding components are both single-layer lead material structures; the transverse and longitudinal shielding components of the boron carbide-lead composite main shielding components are both two-layer structures, with lead as the inner layer and boron carbide as the outer layer; the transverse and longitudinal shielding components of the polyethylene-boron carbide-lead composite main shielding components are both three-layer structures, with lead as the inner layer, boron carbide as the middle layer, and polyethylene as the outer layer.

[0010] Preferably, lead-based primary shielding components are used to shield gamma rays, boron carbide-lead composite primary shielding components are used to shield thermal neutrons and gamma rays, and polyethylene-boron carbide-lead composite primary shielding components are used to slow down the absorption of fast neutrons and shield gamma rays.

[0011] Preferably, each group of main shielding components is provided with its own independent drive linkage, and each drive linkage is connected to an independent rotary drive motor to drive the corresponding main shielding component to rotate 360° around the central axis of the device.

[0012] Preferably, each group of main shielding components is equipped with an independent self-rotation drive motor to drive the main shielding component to rotate independently 360°.

[0013] Preferably, each group of main shielding components is also provided with an axial translation drive unit for driving the transverse shielding component to translate along the axial direction of the device.

[0014] Preferably, the axial translation drive unit includes a servo drive motor, a drive screw, a gear track, a transmission gear, and a guide slide; the transmission gear is meshed with the drive screw and fixedly connected to the transverse shield. When the servo drive motor drives the drive screw to rotate, the transverse shield slides axially along the guide slide through the meshing transmission of the transmission gear and the drive screw.

[0015] Preferably, the lateral shield and the longitudinal shield are configured such that the overlapping area of ​​the lateral shield and the longitudinal shield covers the axial range and circumferential orientation of the radiation-sensitive area of ​​the camera by axial translation of the lateral shield and circumferential rotation and rotation of the main shielding component.

[0016] Preferably, the three main shielding components are configured to simultaneously adjust the circumferential orientation, their own angle, and the axial position of the transverse shielding component when the camera adjusts its observation angle or the radiation field distribution changes.

[0017] Therefore, the present invention employs the above-mentioned lightweight adjustable anisotropic hybrid field shielding device, and the beneficial technical effects are as follows: (1) The present invention adopts a three-layer composite shielding layer that is coaxially nested from the inside to the outside and can be independently rotated 360°. The innermost lead main shielding component achieves efficient attenuation of gamma rays. The middle boron carbide-lead composite main shielding component achieves absorption of thermal neutrons and shielding of gamma rays. The outer polyethylene-boron carbide-lead composite main shielding component achieves slowing absorption of fast neutrons and shielding of gamma rays. The middle and outer main shielding components are used to deal with mixed radiation scenarios of neutrons and gamma rays. The circumferential position, self-angle and axial position of each main shielding component can be independently adjusted according to the radiation type in different directions to achieve differentiated zonal shielding in different directions, while meeting the protection requirements of mixed gamma-neutron irradiation fields.

[0018] (2) The present invention uses a transverse shield that can be axially translated, in conjunction with a longitudinal shield that rotates and rotates with the main shielding component, to accurately locate the axial position of radiation-sensitive areas such as camera CMOS chip and main control circuit board. It can achieve key protection for sensitive areas and reduce the shielding layer coverage for non-sensitive areas as needed. While ensuring the protection effect of core components, it can significantly reduce the overall weight of the device and achieve a balance between protection efficiency and lightweighting.

[0019] (3) The present invention uses three sets of independently driven main shielding components that are evenly arranged in the circumference. All of them can move in the circumference 360°. With the independent rotation drive motor and independent self-rotation drive motor set in each main shielding component, the longitudinal shielding component can rotate and self-rotate in the circumference 360° with the main shielding component, and the transverse shielding component can be axially translated. It can synchronously adapt to the dynamic viewing angle adjustment of the camera and the dynamic changes of the irradiation field, and adjust the orientation and coverage of the shielding layer in real time, so as to achieve dynamic shielding protection at all times without obstructing the camera's observation field of view.

[0020] (4) The present invention adopts a split modular design. The size of the camera mounting cavity can be flexibly adapted by adjusting the arrangement radius of the three main shielding components. It can be compatible with different types and sizes of cameras. Compared with the existing customized fixed structure, the equipment versatility and scene adaptability are greatly improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a lightweight adjustable anisotropic hybrid field shielding device according to the present invention. Figure 2 This is a top view of the overall structure of an embodiment of a lightweight adjustable anisotropic hybrid field shielding device according to the present invention. Figure 3 This is a simplified top view of the overall structure of an embodiment of a lightweight adjustable anisotropic hybrid field shielding device according to the present invention. Figure 4 This is a front view of the lead main shielding component of an embodiment of a lightweight adjustable anisotropic hybrid field shielding device according to the present invention. Figure 5 This is a partial enlarged view of the lead main shielding component in an embodiment of a lightweight adjustable anisotropic hybrid field shielding device of the present invention; Figure 6 This is a schematic diagram of the transverse and longitudinal shielding components of an embodiment of a lightweight adjustable anisotropic hybrid field shielding device according to the present invention.

[0022] Figure Labels 1. Drive link for the main shielding component made of polyethylene-boron carbide-lead composite; 2. Drive link for the main shielding component made of boron carbide-lead composite; 3. Drive link for the main shielding component made of lead; 4. Overall upper fixed end plate; 5. Main shielding component made of lead; 6. Main shielding component made of boron carbide-lead composite; 7. Main shielding component made of polyethylene-boron carbide-lead composite; 8. Overall lower fixed end plate; 9. Upper fixed end plate; 10. Drive screw; 11. Gear track; 12. Transverse shielding component; 13. Transmission gear; 14. Support cylinder; 15. Longitudinal shielding component; 16. Guide slide; 17. Lower fixed end plate. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0025] Example 1 like Figure 1 As shown, the present invention provides a lightweight adjustable anisotropic hybrid field shielding device, including an overall upper fixed end plate 4, an overall lower fixed end plate 8, and three sets of main shielding components evenly arranged circumferentially between the overall upper fixed end plate 4 and the overall lower fixed end plate 8 along the central axis of the device.

[0026] The upper and lower ends of the three main shielding components are rotatably connected to the upper fixed end plate 4 and the lower fixed end plate 8 of the whole, respectively, and together they enclose the camera mounting cavity located on the central axis of the device.

[0027] Three main shielding components are spliced ​​together to form a three-layer composite shielding layer that is coaxially nested radially from the inside out, capable of rotating 360° circumferentially and independently rotating 360°. The three composite shielding layers, radially outward from the camera mounting cavity, are, in sequence: lead main shielding component 5, boron carbide-lead composite main shielding component 6, and polyethylene-boron carbide-lead composite main shielding component 7. Lead main shielding component 5 is used to shield gamma rays, boron carbide-lead composite main shielding component 6 is used to shield thermal neutrons and gamma rays, and polyethylene-boron carbide-lead composite main shielding component 7 is used to slow down and absorb fast neutrons and shield gamma rays. Figure 3 The image shown is a simplified top view of the overall structure of the device. Figure 3 The middle arrows represent gamma rays and neutron rays incident from different directions, visually demonstrating the principle that the device in this embodiment can achieve directional protection against different types of rays by rotating the corresponding shielding layer.

[0028] Each set of main shielding components includes a support cylinder 14, an upper fixed end plate 9, a lower fixed end plate 17, a transverse shield 12, a longitudinal shield 15, a drive screw 10, a gear track 11, a transmission gear 13, and a guide slide 16. The basic structural composition of the three sets of main shielding components is the same; the only difference lies in the material layer structure of the transverse shield 12 and the longitudinal shield 15. Specifically, the transverse shield 12 and longitudinal shield 15 of the lead-based main shielding component 5 are both single-layer lead structures; the transverse shield 12 and longitudinal shield 15 of the boron carbide-lead composite main shielding component 6 are both two-layer structures, with the inner layer being lead and the outer layer being boron carbide (…). Figure 1 Only the longitudinal shielding component 15 is shown in two layers; the transverse shielding component 12 and the longitudinal shielding component 15 of the main shielding component 7, made of polyethylene-boron carbide-lead composite, are both three-layer structures, with lead as the inner layer, boron carbide as the middle layer, and polyethylene as the outer layer. Figure 1 Only the longitudinal shielding element 15 is shown in three layers.

[0029] Taking lead main shielding component 5 as an example, the specific structure of each group of main shielding components is explained.

[0030] like Figure 4 and Figure 5 As shown, the support cylinder 14 serves as the load-bearing base for the main shielding components. The upper and lower ends of the support cylinder 14 are rigidly connected to the upper fixed end plate 9 and the lower fixed end plate 17, respectively. A gear track 11 is fixedly connected to the side wall, providing installation and movement support for the transmission mechanism and the shielding layer. The drive screw 10 is arranged parallel to the axial direction of the support cylinder 14, and its two ends are rotatably connected to the upper fixed end plate 9 and the lower fixed end plate 17, respectively. The guide slide 16 passes through the transverse shielding component 12 and is connected to the upper fixed end plate 9 and the lower fixed end plate 17. Figure 6 As shown, the longitudinal shield 15 is closely attached to the transverse shield 12 and arranged on the outside of the transverse shield 12.

[0031] Each group of main shielding components is equipped with three independent driving methods: (a) 360° rotation in the circumference.

[0032] like Figure 2 As shown, each group of main shielding components has its own independent drive linkage, namely, lead main shielding component drive linkage 3, boron carbide-lead composite main shielding component drive linkage 2, and polyethylene-boron carbide-lead composite main shielding component drive linkage 1. Each drive linkage is connected to an independent rotary drive motor to drive the corresponding main shielding component to rotate 360° around the central axis of the device, and each main shielding component runs on its own track without interfering with each other.

[0033] (ii) It can rotate independently 360°.

[0034] Each main shielding component is equipped with an independent self-rotation drive motor, which drives the main shielding component to rotate independently 360°.

[0035] (iii) Axial translation.

[0036] Each main shielding component group is also equipped with an axial translation drive unit for driving the transverse shielding component 12 to translate axially along the device. The axial translation drive unit includes a servo drive motor, a drive screw 10, a gear track 11, a transmission gear 13, and a guide slide 16. The output shaft of the servo drive motor is rigidly connected coaxially to the upper end of the drive screw 10, driving the drive screw 10 to rotate uniformly around its own axis. The transmission gear 13 is meshed with the drive screw 10 and fixedly connected to the transverse shielding component 12 via bearings and connecting rods. When the servo drive motor drives the drive screw 10 to rotate, the transmission gear 13 is driven to translate vertically along the gear track 11 through the meshing transmission with the drive screw 10, thereby driving the transverse shielding component 12 to slide axially along the guide slide 16.

[0037] The lateral shield 12 and the longitudinal shield 15 are configured such that, through axial translation of the lateral shield 12 and circumferential rotation and rotation of the main shielding components, the overlapping area of ​​the lateral shield 12 and the longitudinal shield 15 covers the axial range and circumferential orientation of the radiation-sensitive area of ​​the camera, such as the CMOS chip, main control circuit board, and other radiation-sensitive areas, thus achieving focused shielding of the radiation-sensitive area of ​​the camera. The lateral shield 12 and the longitudinal shield 15 can be designed into suitable shapes according to shielding requirements for better shielding.

[0038] The three main shielding components are configured to simultaneously adjust the circumferential orientation, their own angle, and the axial position of the transverse shield 12 when the camera adjusts its observation angle or the irradiance distribution changes.

[0039] Based on the above structure, the working process of the device in this embodiment is as follows: First, the three main shielding components are evenly installed circumferentially between the upper fixed end plate 4 and the lower fixed end plate 8 of the whole system along the central axis of the device, completing the splicing and assembly of the three-layer composite shielding layer. This ensures that each main shielding component can rotate 360° circumferentially around the central axis of the device and can rotate 360° independently. Furthermore, the transverse shielding component 12 can move smoothly along the entire axial direction of the guide slide 16, and the transmission gear 13 meshes smoothly with the drive screw 10 and gear track 11 without any motion interference or jamming. Then, the camera to be protected is fixed into the camera mounting cavity formed by the three main shielding components, completing the wiring and fixing of the camera.

[0040] Subsequently, based on the actual mixed irradiation field distribution and the protection requirements for targeted shielding of specific camera locations, the following two working modes can be adopted: First, the mixed radiation field is directional and zoned for shielding: through the independent rotary drive motors connected by each drive linkage, the circumferential angles of the three main shielding components around the central axis of the device are adjusted respectively, and then the rotation angles of each main shielding component are adjusted by the independent self-rotation drive motors, so that the main shielding components with corresponding shielding capabilities are precisely rotated to the radiation incident position.

[0041] For example, when the left side of the device in this embodiment is a strong neutron radiation region dominated by fast neutrons and the right side is a strong gamma radiation region, the polyethylene-boron carbide-lead composite main shielding component 7 is rotated to the left. Its outer polyethylene layer moderates the incident high-energy fast neutrons, the middle boron carbide layer absorbs the moderated thermal neutrons, and the inner lead layer shields the secondary gamma rays generated by the neutrons, achieving efficient protection against neutron radiation throughout the entire process. The lead main shielding component 5 is rotated to the right, utilizing its single-layer lead structure to achieve efficient attenuation of gamma rays. If a certain location of the device is a mixed radiation region of thermal neutrons and gamma rays, the boron carbide-lead composite main shielding component 6 is rotated to that location. Its outer boron carbide layer absorbs thermal neutrons, and its inner lead layer shields the gamma rays, completing directional protection against the corresponding mixed radiation. All three composite shielding layers can rotate 360° arbitrarily on their respective tracks, flexibly adapting to any distributed mixed irradiation field.

[0042] Second, targeted shielding adjustment for axially sensitive areas: The axial translation drive unit drives the drive screw 10 to rotate around its own axis. Through the meshing transmission of the transmission gear 13 and the drive screw 10, the transmission gear 13 is driven to move up and down along the gear track 11, thereby driving the transverse shielding component 12 to move synchronously axially along the guide slide 16. The axial position of the transverse shielding component 12 of one or more main shielding components is precisely adjusted so that it cooperates with the corresponding longitudinal shielding component 15. This accurately covers the axial range of different radiation-sensitive areas such as the camera CMOS chip and the main control circuit board, achieving multi-point key protection for multiple sensitive areas. The shielding layer coverage of non-sensitive areas is reduced as needed, reducing the overall weight of the device while ensuring the protection effect of the core components.

[0043] Finally, the entire device is fixed at the target observation position in a strong radiation environment. When the camera adjusts its observation angle or the radiation field distribution changes dynamically, the circumferential rotation angle and its own angle of the longitudinal shield 15 of the corresponding main shielding components are controlled synchronously, and the axial translation position of the transverse shield 12 is controlled at the same time. The circumferential orientation, its own angle, and the axial position of the transverse shield 12 are adjusted in real time, ensuring the stable and reliable operation of the camera in the mixed radiation field without obstructing the camera's field of view.

[0044] Therefore, the present invention employs the aforementioned lightweight adjustable anisotropic hybrid field shielding device, overcoming numerous shortcomings of existing technologies in terms of hybrid radiation field protection capability, targeted shielding efficiency, dynamic adjustment flexibility, and scene adaptability. It can achieve efficient and coordinated shielding in a hybrid radiation field by partitioning and directional according to differences in radiation direction. At the same time, it can implement precise targeted protection for sensitive components inside the camera, and achieve real-time flexible adaptation of the shielding layer when the camera's viewing angle is dynamically adjusted or the irradiation field distribution changes, eliminating shielding blind spots and field of view obstruction. While ensuring all-round protection effectiveness, it achieves lightweight device and scene universality, providing an efficient, flexible, and reliable comprehensive protection solution for camera monitoring in strong irradiation environments.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A lightweight, adjustable anisotropic hybrid field shielding device, characterized in that, It includes an overall upper fixed end plate, an overall lower fixed end plate, and three sets of main shielding components that are evenly arranged circumferentially between the overall upper fixed end plate and the overall lower fixed end plate along the central axis of the device; The upper and lower ends of the three main shielding components are respectively rotatably connected to the upper fixed end plate and the lower fixed end plate of the whole, and together they enclose to form a camera mounting cavity located on the central axis of the device; The three sets of main shielding components are spliced ​​together to form a three-layer composite shielding layer that is coaxially nested from the inside out; each set of main shielding components includes a transverse shielding component and a longitudinal shielding component.

2. The lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, The three-layer composite shielding layer consists of, in order from the camera mounting cavity outwards, a lead main shielding component, a boron carbide-lead composite main shielding component, and a polyethylene-boron carbide-lead composite main shielding component.

3. A lightweight adjustable anisotropic hybrid field shielding device according to claim 2, characterized in that, The lead-based main shielding components have single-layer lead material structures for both the transverse and longitudinal shielding parts; the boron carbide-lead composite main shielding components have two-layer structures for both the transverse and longitudinal shielding parts, with lead as the inner layer and boron carbide as the outer layer; the polyethylene-boron carbide-lead composite main shielding components have three-layer structures for both the transverse and longitudinal shielding parts, with lead as the inner layer, boron carbide as the middle layer, and polyethylene as the outer layer.

4. A lightweight adjustable anisotropic hybrid field shielding device according to claim 2, characterized in that, The lead-based primary shielding component is used to shield gamma rays, the boron carbide-lead composite primary shielding component is used to shield thermal neutrons and gamma rays, and the polyethylene-boron carbide-lead composite primary shielding component is used to slow down the absorption of fast neutrons and shield gamma rays.

5. A lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, Each of the main shielding components is equipped with its own independent drive link, and each drive link is connected to an independent rotary drive motor to drive the corresponding main shielding component to rotate 360° around the central axis of the device.

6. A lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, Each of the main shielding components is equipped with an independent self-rotation drive motor, which drives the main shielding component to rotate independently 360°.

7. A lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, Each group of main shielding components is also provided with an axial translation drive unit for driving the transverse shielding component to translate along the axial direction of the device.

8. A lightweight adjustable anisotropic hybrid field shielding device according to claim 7, characterized in that, The axial translation drive unit includes a servo drive motor, a drive screw, a gear track, a transmission gear, and a guide slide. The transmission gear meshes with the drive screw and is fixedly connected to the transverse shield. When the servo drive motor drives the drive screw to rotate, the transverse shield slides axially along the guide slide through the meshing transmission gear and the drive screw.

9. A lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, The lateral shield and the longitudinal shield are configured such that, through the axial translation of the lateral shield and the circumferential rotation and rotation of the main shielding component, the overlapping area of ​​the lateral shield and the longitudinal shield covers the axial range and circumferential orientation of the radiation-sensitive area of ​​the camera.

10. A lightweight adjustable anisotropic hybrid field shielding device according to claim 1, characterized in that, The three sets of main shielding components are configured to simultaneously adjust the circumferential orientation, their own angle, and the axial position of the transverse shielding component when the camera adjusts its viewing angle or the irradiance distribution changes.

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