Integrated rapid focusing structure of vehicle-mounted camera chip and lens module

Abstract

The utility model relates to the technical field of vehicle-mounted cameras, and discloses an integrated quick focusing structure of a vehicle-mounted camera chip and a lens module, which comprises a base and a shell arranged on the base, a circuit substrate is arranged on the base, the lens module is arranged on the circuit substrate, an electromagnetic focusing mechanism is arranged in an inner cavity of the shell, and the electromagnetic focusing mechanism is arranged in the inner cavity of the shell. A lens seat located on the outer side of the lens module is arranged below the electromagnetic focusing mechanism. Through the cooperation of the shell, the base, the electromagnetic focusing mechanism and the lens module, the response speed of electromagnetic force driving the first focusing lens to move is high, so that rapid focusing is realized, the requirement of the vehicle-mounted camera in a high-speed motion scene is met, the displacement of the first focusing lens is accurately controlled, high-precision focusing is realized, the imaging definition is improved, and the image quality is improved. Meanwhile, the electromagnetic focusing mechanism is simple in structure, small in size and easy to integrate into the vehicle-mounted camera module, and the focusing stability of the integrated structure is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle camera technology, specifically to an integrated fast focusing structure for vehicle camera chips and lens modules. Background Technology

[0002] With the development of automotive intelligence, in-vehicle cameras are being used more and more widely in autonomous driving, assisted driving, and driving recording. In-vehicle cameras need to have features such as fast focusing, high definition, and high reliability to meet the needs of complex and ever-changing driving environments. Traditional in-vehicle cameras usually use independent camera chips and lens modules, which are connected and fixed through mechanical structures.

[0003] Traditional mechanical structures have a slow response speed when focusing, which is difficult to meet the needs of vehicle cameras. Furthermore, the mechanical structure is affected by vibration and impact during vehicle operation, which can lead to focusing failure. Therefore, we need to propose an integrated fast focusing structure for vehicle camera chips and lens modules. Utility Model Content

[0004] The purpose of this invention is to provide an integrated fast focusing structure for vehicle-mounted camera chips and lens modules. By electromagnetically controlling the position of the lens, the lens module can achieve fast focusing, thereby improving focusing efficiency and stability, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated fast focusing structure for an in-vehicle camera chip and a lens module, comprising:

[0006] A base and a housing mounted on the base, wherein a circuit board is provided on the base, a lens module is provided on the circuit board, an electromagnetic focusing mechanism is provided in the inner cavity of the housing, and a lens mount located outside the lens module is provided below the electromagnetic focusing mechanism.

[0007] The electromagnetic focusing mechanism includes fixed frames that are fixedly connected to both sides of the inner cavity of the outer shell. A connecting seat is slidably arranged between the two sets of fixed frames. A lens groove is opened on the upper surface of the connecting seat, and a first focusing lens is arranged in the lens groove. Coils are arranged at both ends of the lower surface of the connecting seat. A permanent magnet is arranged on one side of the inner cavity of both sets of fixed frames.

[0008] Preferably, a spring is provided on the upper surface of the connecting seat, a limit ring is provided at the top of the inner cavity of the housing, a pressure sensor is provided on the outside of the limit ring at the top of the inner cavity of the housing, and a second focusing lens is provided inside the limit ring.

[0009] Preferably, the outer side of the connector is provided with multiple sets of protrusions, each set of protrusions having through holes, and each set of through holes having a guide rod inserted into it, and the multiple sets of protrusions are arranged in a rectangular array.

[0010] Preferably, a distance sensor is provided on the lower surface of the connecting seat, and both sets of the fixing frames are located below the limiting ring.

[0011] Preferably, the lens module includes a circuit board and a lens sleeve disposed on the upper surface of the base, a control chip is disposed on the upper surface of the circuit board, and a lens body is disposed in the inner cavity of the lens sleeve above the control chip.

[0012] Preferably, the lens mount is a circular tube mount, and a sealing ring is embedded in the lower end of the inner side of the lens mount. The lens mount is slidably disposed on the outside of the lens sleeve.

[0013] Preferably, the outer side of the base is provided with multiple sets of reinforcing plates, and each set of reinforcing plates is provided with a positioning screw connected to the outer shell on one side.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model mainly achieves fast focusing by coordinating the outer shell, base, electromagnetic focusing mechanism, and lens module. The electromagnetic force drives the first focusing lens to move quickly, thus meeting the needs of vehicle cameras in high-speed motion scenarios. It also precisely controls the displacement of the first focusing lens to achieve high-precision focusing and improve image clarity. At the same time, the electromagnetic focusing mechanism has a simple structure, small size, and is easy to integrate into the vehicle camera module, achieving focusing stability of the integrated structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the electromagnetic focusing mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the lens body structure of this utility model.

[0020] In the diagram: 1. Outer shell; 2. Base; 3. Electromagnetic focusing mechanism; 31. Fixing frame; 32. Permanent magnet; 33. Connecting seat; 34. Lens slot; 35. Protrusion; 36. Guide rod; 37. Coil; 4. Limiting ring; 5. Pressure sensor; 6. Spring; 7. First focusing lens; 8. Distance sensor; 9. Circuit board; 10. Control chip; 11. Lens cover; 12. Lens body; 13. Second focusing lens; 14. Lens mount. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an integrated fast focusing structure for an in-vehicle camera chip 10 and a lens module, comprising:

[0023] The base 2 and the housing 1 mounted on the base 2 are provided. The base 2 is provided with a circuit board 9 and a lens module is provided on the circuit board 9. The inner cavity of the housing 1 is provided with an electromagnetic focusing mechanism 3. The lens mount 14 located outside the lens module is provided below the electromagnetic focusing mechanism 3. The lens module and the electromagnetic focusing mechanism 3 are integrated into a compact structure, which reduces the size, facilitates installation, and improves reliability and stability. The electromagnetic focusing mechanism 3 uses electromagnetic force to drive the first focusing lens 7 to move, so as to achieve fast and accurate focusing.

[0024] The electromagnetic focusing mechanism 3 includes fixed frame 31s fixedly connected to both sides of the inner cavity of the outer shell 1. A connecting seat 33 is slidably arranged between the two sets of fixed frame 31s. A lens groove 34 is opened on the upper surface of the connecting seat 33. A first focusing lens 7 is arranged in the lens groove 34. Coils 37 are arranged at both ends of the lower surface of the connecting seat 33. A permanent magnet 32 ​​is arranged on one side of the inner cavity of the two sets of fixed frame 31s. The electromagnetic force interacts with the magnetic field of the permanent magnet 32, pushing the connecting seat 33 and the first focusing lens 7 to move. The integrated design can reduce optical path deviation and improve image quality.

[0025] A spring 6 is provided on the upper surface of the connecting seat 33, a limiting ring 4 is provided at the top of the inner cavity of the outer shell 1, a pressure sensor 5 is provided on the outer side of the limiting ring 4 at the top of the inner cavity of the outer shell 1, and a second focusing lens 13 is provided inside the limiting ring 4. The spring 6 and the limiting ring 4 can limit the movement range of the first focusing lens 7, improve focusing accuracy, and the pressure sensor 5 can prevent the first focusing lens 7 from moving excessively and avoid damage. The second focusing lens 13 is set inside the limiting ring 4, which simplifies the structure and reduces the volume.

[0026] The outer side of the connecting seat 33 is provided with multiple sets of protrusions 35, each set of protrusions 35 having through holes, and each set of through holes having a guide rod 36 inserted into it. The multiple sets of protrusions 35 are arranged in a rectangular array, and the guide rod 36 can guide the connecting seat 33 to move in a straight line, thereby improving focusing stability.

[0027] A distance sensor 8 is provided on the lower surface of the connecting seat 33, and both sets of the fixed frame 31 are located below the limiting ring 4. The distance sensor 8 can monitor the position of the first focusing lens 7 in real time, thereby improving the focusing accuracy.

[0028] The lens module includes a circuit board 9 and a lens cover 11 disposed on the upper surface of the base 2. A control chip 10 is disposed on the upper surface of the circuit board 9. The lens body 12 is disposed in the inner cavity of the lens cover 11 and located above the control chip 10. This improves integration and reduces size. The lens cover 11 can protect the lens body 12 from dust and impact.

[0029] The lens mount 14 is a circular tube mount. A sealing ring is embedded in the lower end of the inner side of the lens mount 14. The lens mount 14 is slidably disposed on the outside of the lens sleeve 11. The sealing ring (not shown in the figure) can prevent dust and moisture from entering the interior of the lens mount 14 and improve the sealing performance.

[0030] The base 2 has multiple sets of reinforcing plates on its outer side, and each set of reinforcing plates has a positioning screw connected to the outer shell 1 on one side. The reinforcing plates (not shown in the figure) can enhance the strength of the base 2 and prevent the base 2 from deforming.

[0031] When the vehicle-mounted camera is activated, the control chip 10 outputs a control signal based on the scene information, driving the coil 37 of the electromagnetic focusing mechanism 3 to be energized, generating electromagnetic force. The electromagnetic force interacts with the permanent magnet 32, pushing the connecting seat 33 and the first focusing lens 7 to move. The distance sensor 8 monitors the position of the connecting seat 33 in real time and feeds back the signal to the control chip 10 to achieve closed-loop control and ensure accurate focusing. At the same time, the spring 6 and the limit ring 4 limit the movement range of the first focusing lens 7, and the pressure sensor 5 prevents excessive movement and protects the first focusing lens 7. Light passes through the lens body 12, the first focusing lens 7 and the second focusing lens 13 and is imaged on the camera's control chip 10, improving the clarity of the image.

[0032] 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. An integrated quick focusing structure of a car-mounted camera chip and a lens module, characterized in that, Include: Base (2), and the shell (1) installed on the base (2), the base (2) is provided with a circuit board (9), the circuit board (9) is provided with a lens module, the inner cavity of the shell (1) is provided with an electromagnetic focusing mechanism (3), the lower side of the electromagnetic focusing mechanism (3) is provided with a lens seat (14) outside the lens module; The electromagnetic focusing mechanism (3) includes a fixed frame (31) fixedly connected on both sides of the inner cavity of the shell (1), two groups of the fixed frame (31) are slidably provided with a connecting seat (33), the upper surface of the connecting seat (33) is provided with a lens groove (34), the lens groove (34) is provided with a first focusing lens (7), the lower surface of the connecting seat (33) is provided with a coil (37) at both ends, one side of the inner cavity of the two groups of the fixed frame (31) is provided with a permanent magnet (32). 2.The quick focusing structure of a car-mounted camera chip and lens module integration according to claim 1, characterized in that: The upper surface of the connecting seat (33) is provided with a spring (6), the inner cavity of the shell (1) is provided with a limiting ring (4) at the top, the outer side of the limiting ring (4) is provided with a pressure sensor (5) located at the top of the inner cavity of the shell (1), the limiting ring (4) is provided with a second focusing lens (13). 3.The quick focusing structure of the vehicle camera chip and lens module integration according to claim 2, characterized in that: The outer side of the connecting seat (33) is provided with a plurality of groups of protrusions (35), a plurality of groups of the protrusions (35) are provided with through holes, and a guide rod (36) is inserted into each group of the through holes, and a plurality of groups of the protrusions (35) are arranged in a rectangular array. 4.The quick focusing structure of a car-mounted camera chip and lens module integration according to claim 3, characterized in that: The lower surface of the connecting seat (33) is provided with a distance sensor (8), and the two groups of the fixed frame (31) are arranged below the limiting ring (4). 5.The quick focusing structure of a car-mounted camera chip and lens module integration according to claim 4, characterized in that: The lens module includes a circuit board (9) and a lens sleeve (11) arranged on the upper surface of the base (2), the upper surface of the circuit board (9) is provided with a control chip (10), and the inner cavity of the lens sleeve (11) is provided with a lens body (12) above the control chip (10). 6.The quick focusing structure of a car-mounted camera chip and lens module integration according to claim 5, characterized in that: The lens seat (14) is a circular pipe seat, a sealing rubber ring is embedded at the lower end of the inner side of the lens seat (14), and the lens seat (14) is slidably arranged outside the lens sleeve (11). 7.The quick focusing structure of a car-mounted camera chip and lens module integration according to claim 6, characterized in that: The outer side of the base (2) is provided with a plurality of groups of reinforcing pieces, and one side of each group of the reinforcing pieces is provided with a positioning screw connected with the shell (1).

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