A high-precision infrared imaging lens mounting frame with adjustable focal length

Abstract

The utility model relates to infrared imaging lens technical field, concretely is a kind of high-precision infrared imaging lens mounting frame with adjustable focal length, including frame body, the bottom of frame body is equipped with mounting piece, one side of frame body is equipped with adjusting box, the inside of adjusting box is communicated with the inside of frame body, the outside of adjusting box is equipped with control mechanism, the bottom of adjusting box is equipped with wiring mechanism, one end of adjusting box is equipped with driving motor, the output of driving motor extends to the inside of adjusting box and is equipped with bidirectional screw rod, one end of bidirectional screw rod is connected through bearing seat between the inner wall of adjusting box, the both ends of bidirectional screw rod are equipped with adjusting plate, threaded hole is set up on the adjusting plate, and the structure can realize automatic high-precision focusing, and focusing efficiency and precision are significantly improved;Core components are integrated in adjusting box, and the anti-interference capability is enhanced and space layout is optimized.

Description

Technical Field

[0001] This utility model relates to the field of infrared imaging lens technology, specifically to a high-precision infrared imaging lens mounting frame with adjustable focal length. Background Technology

[0002] As is well known, infrared imaging technology, with its characteristics of being unaffected by visible light environments and able to penetrate some obstructions, is widely used in fields such as military reconnaissance, industrial equipment fault detection, and security monitoring. As the core component of this technology, the accuracy and efficiency of the infrared imaging lens's focus adjustment directly determine the image quality and user experience. However, most infrared imaging lens mounting frames on the market still have obvious technical defects: the focusing method is outdated and generally relies on manual adjustment (such as rotating the focusing ring and pushing the lens bracket). Manual operation not only makes it difficult to accurately control the amount of lens movement, resulting in large focusing errors (often exceeding the millimeter-level accuracy required for infrared imaging), but also makes it difficult for operators to operate stably in complex scenarios such as high altitude and strong vibration, further reducing focusing efficiency. The aforementioned problems severely restrict the application of infrared imaging technology in scenarios requiring high precision and high stability. Therefore, there is an urgent need for an infrared imaging lens mounting frame with automated focusing, integrated structure, high-precision transmission, and reliable locking functions to address the pain points of existing technologies. Utility Model Content

[0003] To address the shortcomings of existing infrared imaging lens mounting frames, such as low focusing accuracy, low efficiency, and susceptibility to environmental interference, this invention provides a high-precision infrared imaging lens mounting frame with adjustable focus.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-precision infrared imaging lens mounting frame with adjustable focal length, comprising a frame body, a mounting component at the bottom of the frame body, an adjustment box on one side of the frame body, the interior of the adjustment box communicating with the interior of the frame body, a control mechanism on the outside of the adjustment box, a wiring mechanism at the bottom of the adjustment box, a drive motor at one end of the adjustment box, the output end of the drive motor extending into the interior of the adjustment box and having a bidirectional lead screw, one end of the bidirectional lead screw being connected to the inner wall of the adjustment box via a bearing seat, adjustment plates at both ends of the bidirectional lead screw, threaded holes on the adjustment plates, the bidirectional lead screw passing through the threaded holes, a lens assembly mechanism between the adjustment plates and the interior of the frame body, and a locking mechanism between the adjustment plates and the interior of the adjustment box.

[0005] Furthermore, the present invention is improved in that the locking mechanism includes an iron plate and a guide plate. The iron plate is installed on one side of the inner wall of the regulating box. A groove is formed at the bottom end of one end of the iron plate. The guide plate is installed at the bottom end of the regulating plate. A locking plate is provided on one side of the bottom end of the guide plate. An electromagnet is provided at the top end of the locking plate. The top end of the electromagnet contacts the surface of the electric iron plate.

[0006] Furthermore, the present invention is improved in that the regulating box is provided with a limiting plate inside, a limiting groove is provided on one side of the limiting plate, and a limiting block is provided on the other side of the bottom end of the guide plate. The limiting block is located in the limiting groove and is adapted to the limiting groove.

[0007] Furthermore, the present invention is improved in that the lens assembly mechanism includes an assembly frame and a lens body. The assembly frame is installed in the frame body and fixed to one side of the adjustment plate. One end of the assembly frame is provided with a threaded groove, the lens body is located on the threaded groove, and a threaded ring is provided on the threaded groove.

[0008] Furthermore, the present invention is improved in that the wiring mechanism includes a line interface, which is disposed at the bottom of the regulating box.

[0009] Furthermore, the present invention is improved in that the control mechanism includes a controller, which is installed on the outside of the regulating box, and the controller is connected to the drive motor, electromagnet and line interface via a transmission line.

[0010] Furthermore, an improvement of this utility model is that the drive motor is a servo motor.

[0011] Compared with the prior art, this utility model provides a high-precision infrared imaging lens mounting frame with adjustable focal length, which has the following beneficial effects: This adjustable-focus high-precision infrared imaging lens mounting frame completely replaces the traditional manual focusing method through a core transmission structure consisting of a drive motor, a bidirectional lead screw, and adjustment plates. The output of the drive motor drives the bidirectional lead screw to rotate stably, and the adjustment plates at both ends of the bidirectional lead screw mesh with the lead screw through threaded holes. When the lead screw rotates, it can drive the two adjustment plates to move closer or further away synchronously along the axial direction, thereby driving the lens to move precisely through the lens assembly mechanism.

[0012] The core components, including the drive motor, bidirectional lead screw, adjusting plate, and locking mechanism, are integrated into the adjusting box, with one side of the adjusting box connected to the interior of the frame body, forming an integrated structure. This reduces external environmental interference; the adjusting box effectively isolates dust, moisture, and other impurities, preventing them from entering the adjusting mechanism and affecting transmission accuracy. It also reduces the impact of vibration on internal components, solving the problem of traditional distributed structures being susceptible to environmental interference. Attached Figure Description

[0013] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a front half-sectional view of the structure of this utility model; Figure 4 This is a top half-sectional view of the structure of this utility model.

[0014] In the diagram: 1. Frame body; 2. Mounting component; 3. Adjustment box; 4. Drive motor; 5. Two-way lead screw; 6. Bearing seat; 7. Adjustment plate; 8. Iron plate; 9. Guide plate; 10. Locking plate; 11. Electromagnet; 12. Limiting plate; 13. Limiting block; 14. Assembly frame; 15. Lens body; 16. Threaded ring; 17. Line interface; 18. Controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4This utility model relates to a high-precision infrared imaging lens mounting frame with adjustable focal length, comprising a frame body 1, a mounting component 2 at the bottom of the frame body 1, an adjustment box 3 on one side of the frame body 1, the interior of the adjustment box 3 communicating with the interior of the frame body 1, a control mechanism on the outside of the adjustment box 3, a wiring mechanism at the bottom of the adjustment box 3, a drive motor 4 at one end of the adjustment box 3, the output end of the drive motor 4 extending into the interior of the adjustment box 3 and having a bidirectional lead screw 5, one end of the bidirectional lead screw 5 being connected to the inner wall of the adjustment box 3 via a bearing seat 6, adjusting plates 7 at both ends of the bidirectional lead screw 5, threaded holes on the adjusting plates 7 through which the bidirectional lead screw 5 passes, and a lens assembly machine between the adjusting plates 7 and the interior of the frame body 1. The structure includes a locking mechanism between the adjusting plate 7 and the interior of the adjusting box 3. In this embodiment, the frame body 1 provides a mounting base for the lens, and the bottom mounting component 2 secures the entire device to external equipment. One side of the adjusting box 3 connects to the interior of the frame body 1, providing a closed and precise movement space for lens adjustment. The output end of the drive motor 4 drives the bidirectional lead screw 5 inside the adjusting box 3 to rotate. One end of the bidirectional lead screw 5 is fixed by a bearing seat 6 to ensure rotational stability. The adjusting plates 7 at both ends of the bidirectional lead screw 5 engage with the bidirectional lead screw 5 through threaded holes. When the bidirectional lead screw 5 rotates, it drives the two adjusting plates 7 to move synchronously closer or further away along the lead screw axis. The adjusting plates 7 drive the lens inside the frame body 1 to move synchronously through the lens assembly mechanism, thereby achieving focal length adjustment. The locking mechanism between the adjusting plate 7 and the adjusting box 3 can fix the position of the adjusting plate 7 after focusing is completed, preventing displacement. Replacing traditional manual focusing, precise electric adjustment of the lens position is achieved through drive motor 4 and bidirectional lead screw 5, solving the problems of low accuracy and low efficiency of manual focusing. The drive, adjustment, and locking components are integrated into the adjustment box 3, avoiding poor stability caused by the dispersion of components, and reducing the interference of the external environment on the adjustment mechanism. Through the transmission structure of bidirectional lead screw 5 with threaded hole, the movement of adjustment plate 7 can be precisely controlled, providing a stable foundation for focal length adjustment of infrared imaging lens, meeting the high-precision imaging requirements of military, industrial inspection and other scenarios. For example, the minimum adjustment can reach 0.01mm, meeting the millimeter-level accuracy requirements of infrared imaging.

[0017] To facilitate locking the position of the adjustment plate 7, in this design, the locking mechanism includes an iron plate 8 and a guide plate 9. The iron plate 8 is installed on one side of the inner wall of the adjustment box 3, and a groove is formed at the bottom of one end of the iron plate 8. The guide plate 9 is installed at the bottom of the adjustment plate 7, and a locking plate 10 is provided on one side of the bottom of the guide plate 9. An electromagnet 11 is provided at the top of the locking plate 10, and the top of the electromagnet 11 contacts the surface of the electric iron plate 8. The iron plate 8 on the inner wall of the adjustment box 3 provides the adsorption base, and the guide plate 9 at the bottom of the adjustment plate 7 drives the locking plate 10 to move synchronously. After focusing, the electromagnet 11 at the top of the locking plate 10 is energized, and the adjustment plate 7 is fixed in the current position by magnetic adsorption on the surface of the iron plate 8. When the power is off, the electromagnet 11 demagnetizes, and the adjustment plate 7 can be unlocked and continue to move. The electromagnetic control has a fast response speed, requires no manual operation, and can lock immediately after focusing to prevent the adjustment plate 7 from shifting due to vibration. The direct contact adsorption between the electromagnet 11 and the iron plate 8 eliminates the assembly gap of the locking structure, further ensuring the stability of the lens optical axis and improving image quality.

[0018] To improve the smoothness of the linear movement of the adjusting plate 7, in this design, a limiting plate 12 is provided inside the adjusting box 3. A limiting groove is formed on one side of the limiting plate 12, and a limiting block 13 is provided on the other side of the bottom of the guide plate 9. The limiting block 13 is located in the limiting groove and is adapted to the limiting groove. The limiting plate 12 is added inside the adjusting box 3, and the limiting groove on one side of the limiting plate 12 is adapted to the limiting block 13 at the bottom of the guide plate 9. When the adjusting plate 7 moves, the guide plate 9 drives the limiting block 13 to slide along the limiting groove. The limiting groove restricts the adjusting plate 7, thereby improving the smoothness of the linear movement of the adjusting plate 7.

[0019] To facilitate the disassembly and assembly of internal components, the lens assembly mechanism in this design includes an assembly frame 14 and a lens body 15. The assembly frame 14 is installed within the frame body 1 and fixed to one side of the adjustment plate 7. One end of the assembly frame 14 has a threaded groove, on which the lens body 15 is located. A threaded ring 16 is provided on the threaded groove. The threaded groove at one end of the assembly frame 14 is used to place the lens body 15. After the threaded ring 16 engages with the threaded groove and is tightened, the lens body 15 is pressed and fixed within the assembly frame 14. The threaded ring 16 is detachable, facilitating the replacement of infrared imaging lenses of different specifications and improving the adaptability of the device to different imaging needs. The threaded fixing method prevents the lens body 15 from loosening during adjustment or vibration. At the same time, the pressure between the threaded ring 16 and the lens body 15 is even, preventing damage to the lens body 15 due to excessive localized force. To facilitate quick connection to external power supply lines, the wiring mechanism in this solution includes a line interface 17, which is located at the bottom of the regulating box 3. External power supply lines and signal lines are centrally connected to the regulating box 3 through the line interface 17 to supply power to electrical components such as the drive motor 4 and electromagnet 11, or to transmit control signals. This facilitates quick plugging and unplugging of lines during later maintenance, reducing maintenance difficulty and time costs.

[0020] To facilitate the control of this structure, in this solution, the control mechanism includes a controller 18, which is installed on the outside of the adjustment box 3. The controller 18 is connected to the drive motor 4, the electromagnet 11, and the line interface 17 via a transmission line. The controller 18 is connected to the drive motor 4, the electromagnet 11, and the line interface 17 via the transmission line. After receiving external commands, such as focus adjustment signals and lock signals, the controller 18 sends operation commands to the drive motor 4 to control the speed and direction, adjust the lens position, and sends on / off commands to the electromagnet 11. At the same time, it receives external power supply and signal transmission through the line interface 17.

[0021] To improve the movement accuracy of the control adjustment plate 7, in this scheme, the drive motor 4 is a servo motor. The servo motor has the characteristics of controllable speed, precise rotation angle and fast response. It can accurately control the rotation angle and speed of the output end according to the instructions of the controller 18, and then accurately control the rotation amount of the bidirectional lead screw 5, so as to achieve precise control of the movement distance of the adjustment plate 7.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision infrared imaging lens mounting frame with adjustable focal length, comprising a frame body (1), wherein a mounting component (2) is provided at the bottom end of the frame body (1), characterized in that, An adjustment box (3) is provided on one side of the frame body (1). The interior of the adjustment box (3) is connected to the interior of the frame body (1). A control mechanism is provided on the outside of the adjustment box (3). A wiring mechanism is provided at the bottom of the adjustment box (3). A drive motor (4) is provided at one end of the adjustment box (3). The output end of the drive motor (4) extends into the interior of the adjustment box (3) and is provided with a bidirectional lead screw (5). One end of the bidirectional lead screw (5) is connected to the inner wall of the adjustment box (3) through a bearing seat (6). Adjustment plates (7) are provided at both ends of the bidirectional lead screw (5). Threaded holes are provided on the adjustment plates (7). The bidirectional lead screw (5) passes through the threaded holes. A lens assembly mechanism is provided between the adjustment plate (7) and the interior of the frame body (1). A locking mechanism is provided between the adjustment plate (7) and the interior of the adjustment box (3).

2. The adjustable focal length high-precision infrared imaging lens mounting frame according to claim 1, characterized in that, The locking mechanism includes an iron plate (8) and a guide plate (9). The iron plate (8) is installed on one side of the inner wall of the regulating box (3). A groove is provided at the bottom of one end of the iron plate (8). The guide plate (9) is installed at the bottom of the regulating plate (7). A locking plate (10) is provided on one side of the bottom of the guide plate (9). An electromagnet (11) is provided at the top of the locking plate (10). The top of the electromagnet (11) contacts the surface of the electric iron plate (8).

3. The adjustable focal length high-precision infrared imaging lens mounting frame according to claim 2, characterized in that, The regulating box (3) is provided with a limiting plate (12) inside. A limiting groove is provided on one side of the limiting plate (12), and a limiting block (13) is provided on the other side of the bottom end of the guide plate (9). The limiting block (13) is located in the limiting groove and is adapted to the limiting groove.

4. The adjustable focal length high-precision infrared imaging lens mounting frame according to claim 1, characterized in that, The lens assembly mechanism includes an assembly frame (14) and a lens body (15). The assembly frame (14) is installed in the frame body (1) and fixed to one side of the adjustment plate (7). One end of the assembly frame (14) is provided with a threaded groove, and the lens body (15) is located on the threaded groove. A threaded ring (16) is provided on the threaded groove.

5. A high-precision infrared imaging lens mounting frame with adjustable focal length according to claim 2, characterized in that, The wiring mechanism includes a line interface (17), which is located at the bottom of the regulating box (3).

6. The adjustable focal length high-precision infrared imaging lens mounting frame according to claim 5, characterized in that, The control mechanism includes a controller (18), which is installed on the outside of the regulating box (3). The controller (18) is connected to the drive motor (4), the electromagnet (11) and the line interface (17) via a transmission line.

7. The adjustable focal length high-precision infrared imaging lens mounting frame according to claim 1, characterized in that, The drive motor (4) is a servo motor.

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