Camera module capable of mechanically zooming

Abstract

The utility model discloses a camera module capable of mechanically zooming. The camera module capable of mechanically zooming comprises a mechanical zoom lens assembly, a circuit board and a heat dissipation piece, the mechanical zoom lens assembly comprises a lens assembly, a driving assembly and a shell, a containing space is formed in the shell, the driving assembly and the lens assembly are arranged in the containing space, the driving assembly is used for driving the lens assembly to move for focusing, one face of the circuit board is fixed to the shell, and the other face of the circuit board is fixed to the shell. Therefore, the structure is more compact, the space is saved, the cost is reduced, and the problem of jittering during focusing of far and near scenes is solved.

Description

Technical Field

[0001] The utility model relates to the field of cameras, in particular to a camera module capable of mechanical zooming. Background Art

[0002] Since the traditional VCM solution has the problem of jitter when focusing on the far and near scenes, it can no longer meet the needs of high-end camera module products or high-precision camera module products. In order to achieve clear far and near scenes, if a combination of a far-view camera module and a near-view camera module is used, it will increase costs and occupy more space. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a camera module capable of mechanical zooming.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A camera module capable of mechanical zooming, comprising: a mechanical zoom lens assembly, a circuit board and a heat sink;

[0006] The mechanical zoom lens assembly includes a lens assembly, a driving assembly and a shell. The shell is provided with a storage space. The driving assembly and the lens assembly are arranged in the storage space. The driving assembly is used to drive the lens assembly to move and focus. One side of the circuit board is fixed to the shell, and the other side is fixed to the heat sink.

[0007] In one embodiment, the driving assembly includes a motor, a threaded rotating rod and an auxiliary rod, the threaded rotating rod is provided with a thread, the motor is fixed to the shell, the motor is connected to the threaded rotating rod, the threaded rotating rod and the auxiliary rod are rotatably provided at the upper and lower ends of the lens assembly, and when the motor drives the threaded rotating rod to rotate, the lens assembly moves along the length direction of the threaded rotating rod.

[0008] In one embodiment, the mechanical zoom lens assembly further includes two fixing rings, which are respectively arranged at the upper and lower ends of the mechanical zoom lens assembly, and the two fixing rings are respectively slidably mounted on the threaded rotating rod and the auxiliary rod.

[0009] In one embodiment, the heat sink is provided with a plurality of heat sinks on a side away from the mechanical zoom lens assembly.

[0010] In one of the embodiments, the heat sinks are arranged in a straight line and are rectangular structures.

[0011] In one embodiment, the heat sink is made of aluminum.

[0012] In one embodiment, the mechanical zoom lens assembly is provided with four positioning posts on a side abutting against the circuit board, and the circuit board is provided with four positioning holes at positions matching the positioning posts.

[0013] In one embodiment, the mechanical zoom lens assembly and the circuit board are screwed together.

[0014] In one embodiment, a thermal grease layer is provided between the heat sink and the circuit board.

[0015] In one embodiment, the thickness of the thermal grease layer is in the range of 0.1 mm to 0.3 mm.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The camera module capable of mechanical zoom of the utility model is provided with a mechanical zoom lens assembly, a circuit board and a heat sink. The mechanical zoom lens assembly includes a lens assembly, a driving assembly and a shell. A accommodating space is provided in the shell. The driving assembly and the lens assembly are arranged in the accommodating space. The driving assembly is used to drive the lens assembly to move and focus. One side of the circuit board is fixed to the shell, and the other side is fixed to the heat sink. This makes the structure more compact, saves space, and reduces costs, and solves the jitter problem when focusing on long and short scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 It is a structural schematic diagram of a camera module capable of mechanical zoom in one embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a lens assembly in one embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a camera module capable of mechanical zoom in one embodiment of the utility model.

[0022] Reference numerals:

[0023] The mechanical zoom lens assembly 10 , the lens assembly 11 , the motor 12 , the threaded rotating rod 13 , the auxiliary rod 14 , the fixing ring 15 , the housing 16 , the upper shell 161 , the lower shell 162 , the circuit board 20 , the heat sink 21 , the heat sink 22 , and the thermal grease layer 23 . DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0025] This application proposes a camera module with mechanical zoom, which is used to change the size of the field of view and the focus of the near and far scenes. Figure 1 , Figure 2 and Figure 3 , including: a mechanical zoom lens assembly 10, a circuit board 20 and a heat sink 21. The mechanical zoom lens assembly 10 is used to adjust the focal length, and the heat sink 21 is used to conduct the heat generated by the components in the circuit board 20. The mechanical zoom lens assembly 10 includes a lens assembly 11, a drive assembly and a housing 16. A storage space is provided in the housing 16. The drive assembly and the lens assembly 11 are arranged in the storage space. The drive assembly is used to drive the lens assembly 11 to move and focus. One side of the circuit board 20 is fixed to the housing 16, and the other side is fixed to the heat sink 21, so that the structure is more compact, space is saved, and costs are reduced, and the jitter problem when focusing on long and short scenes is solved.

[0026] It should be noted that the components on the circuit board 20 are arranged in the circuit board 20 through SMT or die / wire. The operation of the components generates a thermal effect. If the heat on the circuit board 20 is not discharged to the outside in time, the accumulated heat will damage the components on the circuit board 20 and cause failure. Therefore, a heat sink 21 is provided on one side of the circuit board 20 to quickly discharge the internal heat of the module to the outside, prevent damage to the circuit board 20 and components, and increase the service life.

[0027] In one embodiment, see Figure 2The driving assembly includes a motor 12, a threaded rotating rod 13 and an auxiliary rod 14. The threaded rotating rod 13 is provided with a thread. The motor 12 is fixed on the housing 16. The motor 12 is connected to the threaded rotating rod 13. The upper and lower ends of the lens assembly 11 are rotatably provided with the threaded rotating rod 13 and the auxiliary rod 14. When the motor 12 drives the threaded rotating rod 13 to rotate, the lens assembly 11 moves along the length direction of the threaded rotating rod 13, so that the lens assembly 11 can be mechanically focused to achieve the focus of the far and near scenes and the change of the field of view, thereby improving the user experience. Further, the mechanical zoom lens assembly 10 also includes two fixing rings 15, which limit the mechanical zoom lens assembly 10, so that the mobile focus of the mechanical zoom lens assembly 10 is more stable. The two fixing rings 15 are respectively arranged at the upper and lower ends of the mechanical zoom lens assembly 10, one fixing ring 15 is sleeved on the thread of the threaded rotating rod 13, and the other fixing ring 15 is slidably sleeved on the auxiliary rod 14, which reduces the cost of the module and makes the structure more compact. When the motor 12 is started, the motor 12 drives the threaded rotating rod 13 to rotate, and the mechanical zoom lens assembly 10 moves forward and backward along the thread on the rotating rotating rod through the fixed ring 15, and another fixed ring 15 slides along the auxiliary rod 14 to limit the focus, thereby realizing the focus adjustment of the far and near scenes and the change of the field of view angle, and the mechanical zoom lens assembly 10 moves along the thread on the rotating rotating rod, thereby improving the focusing accuracy.

[0028] In one embodiment, see Figure 1 The heat sink 21 is provided with a plurality of heat sinks 22 on the side away from the mechanical zoom lens assembly 10. The provision of the heat sink 22 increases the contact area between the air and the heat sink 21, and improves the heat exchange efficiency between the air and the heat sink 21, thereby effectively improving the heat dissipation effect. Specifically, the heat sink 22 is a rectangular sheet structure, and each heat sink 22 is arranged in a "one" shape. In this way, each heat sink 22 can be arranged in a rectangular shape on the heat sink 21, thereby making the overall heat dissipation structure more concentrated and compact, and more heat sinks 22 can be arranged in a smaller space, thereby further improving the heat dissipation effect. Preferably, the heat sink 21 is an aluminum part made of aluminum metal.

[0029] Since the mechanical zoom lens assembly 10 is heavy, in order to stably fix the circuit board 20 on the mechanical zoom lens assembly 10, the mechanical zoom lens assembly 10 and the circuit board 20 are fixed by screwing. Similarly, the heat sink 21 is screwed to the circuit board 20. Furthermore, the mechanical zoom lens assembly 10 is provided with four positioning posts on the side abutting against the circuit board 20, and the positioning posts are used to limit the circuit board 20 so that the circuit board 20 can be quickly aligned on the mechanical zoom lens assembly 10, and the circuit board 20 is provided with four positioning holes at positions matching the positioning posts, and the circuit board 20 is respectively limited to the specified positions of the mechanical zoom lens assembly 10 through the positioning holes, so as to facilitate the manipulator or the staff to screw in the screws.

[0030] Also, see Figure 3 A thermal grease layer 23 is provided between the heat sink 21 and the circuit board 20. The thermal grease layer 23 is made of silicone grease, which has good thermal conductivity. Therefore, the heat on the circuit board 20 can be conducted out through the thermal grease layer 23, thereby further improving the heat dissipation effect. Preferably, the thickness of the thermal grease layer 23 is in the range of 0.1 mm to 0.3 mm. Moreover, the housing 16 includes an upper housing 161 and a lower housing 162. The upper housing 161 contains the lens assembly 11, and the lower housing 162 contains the motor 12. The threaded rotating rod 13 and the auxiliary rod 14 are arranged in the upper housing 161 and the lower housing 162. The design of the upper housing 161 and the lower housing 162 is convenient for maintenance and assembly, and reduces the work intensity of the staff.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A camera module capable of mechanical zoom, characterized in that: include: Mechanical zoom lens assemblies, circuit boards, and heat sinks; The mechanical zoom lens assembly includes a lens assembly, a driving assembly and a shell. The shell is provided with a storage space. The driving assembly and the lens assembly are arranged in the storage space. The driving assembly is used to drive the lens assembly to move and focus. One side of the circuit board is fixed to the shell, and the other side is fixed to the heat sink.

2. The camera module with mechanical zoom according to claim 1, characterized in that: The driving assembly includes a motor, a threaded rotating rod and an auxiliary rod. The threaded rotating rod is provided with threads. The motor is fixed to the shell and connected to the threaded rotating rod. The threaded rotating rod and the auxiliary rod are rotatably provided at the upper and lower ends of the lens assembly. When the motor drives the threaded rotating rod to rotate, the lens assembly moves along the length direction of the threaded rotating rod.

3. The camera module with mechanical zoom according to claim 2, characterized in that: The mechanical zoom lens assembly further comprises two fixing rings, which are slidably arranged at the upper and lower ends of the mechanical zoom lens assembly respectively, and are respectively sleeved on the threaded rotating rod and the auxiliary rod.

4. The camera module with mechanical zoom according to claim 1, characterized in that: The heat sink is provided with a plurality of heat sinks on a side away from the mechanical zoom lens assembly.

5. The camera module with mechanical zoom according to claim 4, characterized in that: Each of the heat sinks is arranged in a straight line and has a rectangular structure.

6. The camera module with mechanical zoom according to claim 5, characterized in that: The heat sink is an aluminum part.

7. The camera module with mechanical zoom according to claim 1, characterized in that: The mechanical zoom lens assembly is provided with four positioning posts on one side abutting against the circuit board, and the circuit board is provided with four positioning holes at positions matching the positioning posts.

8. The camera module with mechanical zoom according to claim 1, characterized in that: The mechanical zoom lens assembly and the circuit board are screwed together.

9. The camera module capable of mechanical zoom according to claim 8, characterized in that: A thermal conductive silicone grease layer is arranged between the heat sink and the circuit board.

10. The camera module capable of mechanical zoom according to claim 9, characterized in that: The thickness of the thermal conductive silicone grease layer is in the range of 0.1 mm to 0.3 mm.

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