Infrared-visible light living body detection dual-mode lens

Abstract

The utility model relates to camera field especially, it relates to a kind of infrared visible light living body detection bimodulus lens, including mounting plate, the one side of mounting plate is integrally provided with annular plate, the overall stability of structure is strengthened, annular plate is connected with hemispherical transparent cover by screw thread, circuit board and connecting plate are installed on the same side of annular plate of mounting plate, first steering wheel is fixed on the side of connecting plate away from circuit board.The infrared visible light living body detection bimodulus lens, camera module integration visible light and infrared light camera, visible light captures target appearance, color and other conventional information, infrared light reflects target thermal radiation characteristics, living body detection is carried out in combination with the two, improve accuracy and reliability, reduce misjudgment rate, better cope with complex environment detection demand.

Description

Technical Field

[0001] This utility model relates to the field of cameras, and in particular to a dual-mode lens for infrared and visible light liveness detection. Background Technology

[0002] Existing products only use either visible light or infrared light for detection, and cannot simultaneously utilize the advantages of both light sources for liveness detection. This may lead to reduced detection accuracy and increased false positive rates in complex environments, such as when there are large changes in light or when the target's thermal radiation characteristics are not obvious.

[0003] When installing and fixing the circuit board of the camera module, the position needs to be adjusted manually repeatedly. This is not only inefficient, but also makes it difficult to ensure installation accuracy. It may lead to unstable connections between components, affecting the performance of the device. In addition, the circuit board and lens lack buffering.

[0004] Therefore, it is necessary to provide an infrared-visible light dual-mode lens for liveness detection to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an infrared and visible light liveness detection dual-mode lens.

[0006] This utility model provides an infrared and visible light dual-mode liveness detection lens, including a mounting plate. One side of the mounting plate has an integrally formed annular plate, enhancing the overall structural stability. A hemispherical transparent cover is threaded onto the annular plate. A circuit board and a connecting plate are mounted on the same side of the mounting plate as the annular plate. A first servo motor is fixed to the side of the connecting plate away from the circuit board. A first L-shaped plate is fixed to the output end of the first servo motor. A second servo motor is fixed to the inner side of the first L-shaped plate. A second L-shaped plate is fixed to the output end of the second servo motor. A U-shaped mounting bracket is fixed to the inner side of the second L-shaped plate. A camera module is mounted inside the U-shaped mounting bracket. The camera module includes a visible light camera module and an infrared camera module.

[0007] Integrating visible light and infrared camera modules, this device can simultaneously utilize both visible and infrared light for liveness detection. Visible light captures conventional information such as the target's appearance and color, while infrared light reflects the target's thermal radiation characteristics. The combination of the two significantly improves the accuracy and reliability of liveness detection, effectively reduces the false positive rate, and better meets the detection needs in complex environments.

[0008] With the cooperation of the first and second servo motors, the first L-shaped plate, the second L-shaped plate, and the U-shaped mounting bracket can rotate flexibly at multiple angles, thereby driving the camera module to perform multi-directional shooting and detection, expanding the detection range, adapting to target detection at different positions and angles, and improving the versatility and practicality of the equipment.

[0009] Preferably, a threaded cylinder is provided at an equal angle on one side of the mounting plate, and the threaded cylinder is integrally formed with the mounting plate. A screw is threadedly connected inside the threaded cylinder. Mounting holes are provided at the four corners of the circuit board and the connecting plate, and the screw passes through the corresponding mounting holes on the circuit board and the connecting plate. A rubber sleeve is fitted onto the screw, and the rubber sleeve is located between the circuit board and the connecting plate. The rubber sleeve plays a role in buffering and shock absorption, which can reduce the impact of external vibration on the electronic components on the circuit board and the connecting plate, and ensure the stable operation of the equipment.

[0010] Preferably, a washer is provided on the outside of the screw, and the washer is positioned between the screw's tightening end and the connecting plate. The washer disperses the pressure of the screw's tightening end on the connecting plate, preventing damage to the connecting plate.

[0011] Preferably, the end of the threaded cylinder is provided with positioning grooves that fit the four corners of the circuit board. The mounting plate is provided with connection holes at each of its four corners.

[0012] The mounting plate allows for quick and accurate positioning during circuit board installation, improving installation efficiency and precision. Connection holes at the four corners facilitate the connection and fixation of the dual-mode lens to other devices or apparatuses, enabling integration into different systems.

[0013] Preferably, the mounting plate has a wire clearance hole at its center, which is positioned directly opposite the circuit board. This provides a reasonable channel for wire arrangement, allowing the wires to connect to the circuit board and other components neatly and orderly, avoiding tangled wires. This not only facilitates equipment maintenance and repair but also reduces damage to the wires caused by bending and pulling, thus extending the equipment's service life.

[0014] Preferably, the mounting plate has several reinforcing ribs on the side away from the annular plate. The reinforcing ribs can significantly enhance the structural strength of the mounting plate, making it less prone to deformation when bearing the weight of components such as the camera module and servo motor, as well as external forces, thus ensuring the structural stability and reliability of the equipment.

[0015] Compared with related technologies, the present invention provides the following beneficial effects:

[0016] The integrated design of the ring plate and mounting plate greatly enhances overall stability, providing a solid foundation for the installation of various components. Reinforcing ribs significantly improve the structural strength of the mounting plate, making it less prone to deformation when bearing the weight of components such as the camera module and servo motor, as well as external forces, ensuring the stability and reliability of the equipment structure. The rubber sleeve provides a certain degree of cushioning.

[0017] The camera module integrates visible light and infrared cameras. Visible light captures conventional information such as the target's appearance and color, while infrared light reflects the target's thermal radiation characteristics. The combination of the two enables liveness detection, improving accuracy and reliability, reducing false positive rates, and better meeting the detection needs of complex environments.

[0018] The first and second servo motors work together to drive the first L-shaped plate, the second L-shaped plate, and the U-shaped mounting bracket to rotate flexibly at multiple angles, thereby enabling the camera module to capture and detect from multiple directions, expanding the detection range, adapting to target detection at different positions and angles, and improving the versatility and practicality of the equipment.

[0019] The positioning groove at the end of the threaded cylinder enables quick and accurate positioning of the circuit board, improving installation efficiency and precision. The connection holes at the four corners of the mounting plate facilitate connection and fixation with other equipment, making it easy to integrate into different systems. Wire clearance holes provide a reasonable passage for wire arrangement, avoiding messy tangling, facilitating equipment maintenance and repair, reducing wire damage, and extending equipment lifespan. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the inner structure of the annular plate of this utility model;

[0021] Figure 2 This is a schematic diagram of the connecting plate structure of this utility model;

[0022] Figure 3 This is a schematic diagram showing the relative positions of the circuit boards of this utility model;

[0023] Figure 4 This is a schematic diagram of the front structure of the mounting plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the reverse side structure of the mounting plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of this utility model.

[0026] The following are the labeling elements in the diagram: 1. Mounting plate; 2. Annular plate; 3. Hemispherical transparent cover; 4. Circuit board; 5. Connecting plate; 6. First servo motor; 7. First L-shaped plate; 8. Second servo motor; 9. Second L-shaped plate; 10. U-shaped mounting bracket; 11. Camera module; 12. Visible light camera module; 13. Infrared light camera module; 14. Threaded cylinder; 15. Screw; 16. Mounting hole; 17. Rubber cylinder; 18. Gasket; 19. Positioning groove; 20. Connecting hole; 21. Wire clearance hole; 22. Reinforcing rib. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please refer to the following: Figures 1 to 6 An infrared-visible light dual-mode liveness detection lens is described, one of its core components being a mounting plate 1. An annular plate 2 is integrally mounted on one side of the mounting plate 1. This integrated design greatly enhances the overall stability of the structure, providing a solid and reliable foundation for the subsequent installation of other components.

[0029] A hemispherical transparent cover 3 is securely installed on the annular plate 2 via a threaded connection. The hemispherical transparent cover 3 not only protects key components such as the internal camera module, but also ensures that light can pass through smoothly without affecting normal testing work.

[0030] On the same side of the mounting plate 1 as the annular plate 2, a circuit board 4 and a connecting plate 5 are sequentially mounted. On the side of the connecting plate 5 away from the circuit board 4, a first servo motor 6 is fixedly mounted. The output end of the first servo motor 6 is fixedly connected to a first L-shaped plate 7, and when the first servo motor 6 operates, it can drive the first L-shaped plate 7 to rotate.

[0031] A second servo motor 8 is fixedly installed on the inner side of the first L-shaped plate 7, and the output end of the second servo motor 8 is fixedly connected to the second L-shaped plate 9. A U-shaped mounting bracket 10 is fixedly installed on the inner side of the second L-shaped plate 9, and the inner side of the U-shaped mounting bracket 10 is used to install the camera module 11. The camera module 11 integrates a visible light camera module 12 and an infrared camera module 13. This dual-mode design is a major highlight of this lens. The visible light camera module 12 can capture conventional information such as the appearance and color of the target, while the infrared camera module 13 can reflect the thermal radiation characteristics of the target. The two work together to simultaneously use visible light and infrared light for liveness detection, greatly improving the accuracy and reliability of liveness detection, effectively reducing the false positive rate, and better meeting the detection needs in complex environments.

[0032] Through the coordinated operation of the first servo motor 6 and the second servo motor 8, the first L-shaped plate 7, the second L-shaped plate 9, and the U-shaped mounting bracket 10 can achieve flexible rotation at multiple angles. This flexible rotation mechanism enables the camera module 11 to perform multi-directional shooting and detection, greatly expanding the detection range and allowing the device to adapt to target detection at different positions and angles, thereby improving the versatility and practicality of the device.

[0033] To further optimize equipment performance, threaded cylinders 14 are provided at equal angles on one side of the mounting plate 1, and the threaded cylinders 14 are integrally formed with the mounting plate 1. Screws 15 are threadedly connected inside the threaded cylinders 14. Mounting holes 16 are provided at the four corners of both the circuit board 4 and the connecting plate 5. The screws 15 pass through the corresponding mounting holes 16 of the circuit board 4 and the connecting plate 5 in sequence, firmly fixing the circuit board 4 and the connecting plate 5 to the mounting plate 1. A rubber sleeve 17 is also fitted onto the screws 15, located between the circuit board 4 and the connecting plate 5. The rubber sleeve 17 has good elasticity and cushioning performance, which can buffer and dampen vibrations, effectively reducing the impact of external vibrations on the electronic components on the circuit board 4 and the connecting plate 5, ensuring stable equipment operation.

[0034] A washer 18 is provided on the outside of the screw 15, and the washer 18 is positioned between the screw 15 and the connecting plate 5. The washer 18 can distribute the pressure of the screw 15 on the connecting plate 5, prevent the connecting plate 5 from being damaged due to excessive local stress, and extend the service life of the connecting plate 5.

[0035] The threaded cylinder 14 has positioning grooves 19 at its ends that fit the four corners of the circuit board 4. When installing the circuit board 4, the positioning grooves 19 can quickly and accurately position the circuit board 4, greatly improving installation efficiency and accuracy. The mounting plate 1 has connection holes 20 at each of its four corners. These connection holes 20 facilitate the connection and fixation of the entire dual-mode lens with other equipment or devices, making it easy to integrate the dual-mode lens into different systems and expanding its application range.

[0036] A wire clearance hole 21 is provided at the center of the mounting plate 1, and the wire clearance hole 21 is positioned directly opposite the circuit board 4. The wire clearance hole 21 provides a reasonable channel for wire arrangement, allowing the wires to connect the circuit board 4 and other components neatly and orderly, avoiding tangled wires. This not only facilitates equipment maintenance and repair, but also reduces damage to the wires caused by bending, pulling, etc., thereby improving the service life of the equipment.

[0037] In addition, the mounting plate 1 has several reinforcing ribs 22 on the side away from the annular plate 2, which can significantly enhance the structural strength of the mounting plate 1. During the operation of the equipment, the mounting plate 1 needs to bear the weight of components such as the camera module 11 and the servo motor, as well as external forces. The presence of the reinforcing ribs 22 makes the mounting plate 1 less prone to deformation, ensuring the structural stability and reliability of the equipment.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dual-mode lens for infrared and visible light liveness detection, characterized in that, The system includes a mounting plate (1), one side of which is integrally provided with an annular plate (2). A hemispherical transparent cover (3) is threaded onto the annular plate (2). A circuit board (4) and a connecting plate (5) are mounted on the same side of the mounting plate (1) on the annular plate (2). A first servo motor (6) is fixed on the side of the connecting plate (5) away from the circuit board (4). A first L-shaped plate (7) is fixed to the output end of the first servo motor (6). A second servo motor (8) is fixed to the inner side of the first L-shaped plate (7). A second L-shaped plate (9) is fixed to the output end of the second servo motor (8). A U-shaped mounting bracket (10) is fixed to the inner side of the second L-shaped plate (9). A camera module (11) is mounted on the inner side of the U-shaped mounting bracket (10). The camera module (11) includes a visible light camera module (12) and an infrared camera module (13).

2. The infrared-visible light dual-mode lens for liveness detection according to claim 1, characterized in that, The mounting plate (1) has a threaded cylinder (14) at equal angles on one side, and the threaded cylinder (14) is integrally set with the mounting plate (1). The threaded cylinder (14) is connected to a screw (15) by thread. The four corners of the circuit board (4) and the connecting plate (5) are provided with mounting holes (16), and the screw (15) passes through the corresponding mounting holes (16) of the circuit board (4) and the connecting plate (5). A rubber cylinder (17) is fitted on the screw (15), and the rubber cylinder (17) is located between the circuit board (4) and the connecting plate (5).

3. The infrared-visible light dual-mode lens for liveness detection according to claim 2, characterized in that, A washer (18) is provided on the outside of the screw (15), and the washer (18) is located between the screw (15) screw end and the connecting plate (5).

4. The infrared-visible light dual-mode lens for liveness detection according to claim 2, characterized in that, The end of the threaded cylinder (14) is provided with positioning grooves (19) that are adapted to the four corners of the circuit board (4).

5. The infrared-visible light dual-mode lens for liveness detection according to claim 1, characterized in that, The mounting plate (1) has connection holes (20) at all four corners.

6. The infrared-visible light dual-mode lens for liveness detection according to claim 1, characterized in that, The mounting plate (1) has a wire avoidance hole (21) at its center, and the wire avoidance hole (21) is positioned directly opposite the circuit board (4).

7. The infrared-visible light dual-mode lens for liveness detection according to claim 1, characterized in that, The mounting plate (1) has several reinforcing ribs (22) on the side away from the annular plate (2).

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