阅读说明：本技术 相机模组 (Camera module ) 是由 李宇帅 陈信文 李堃 张龙飞 于 2018-08-29 设计创作，主要内容包括：一种相机模组包括镜座与镜筒,所述镜座包括环状侧壁,所述环状侧壁的内表面设有第一内螺纹,所述镜筒包括光学镜头,所述光学镜头包括第一端部及固定于第一端部上的第二端部,所述第一端部包括端面及与所述端面垂直的侧面,所述侧面形成第一外螺纹,所述第一内螺纹与所述第一外螺纹螺合,所述侧面还形成自所述端面朝所述第二端部延伸的至少一缺口。(The camera module comprises a lens base and a lens barrel, wherein the lens base comprises an annular side wall, a first internal thread is arranged on the inner surface of the annular side wall, the lens barrel comprises an optical lens, the optical lens comprises a first end part and a second end part fixed on the first end part, the first end part comprises an end surface and a side surface perpendicular to the end surface, a first external thread is formed on the side surface, the first internal thread is screwed with the first external thread, and at least one notch extending from the end surface to the second end part is formed in the side surface.)

1. The utility model provides a camera module, includes microscope base and lens cone, the microscope base includes cyclic annular lateral wall, the internal surface of cyclic annular lateral wall is equipped with first internal thread, the lens cone includes optical lens, its characterized in that: the optical lens comprises a first end portion and a second end portion, the first end portion comprises an end face and a side face perpendicular to the end face, a first external thread is formed on the side face, the first internal thread is screwed with the first external thread, and at least one notch extending from the end face to the second end portion is formed in the side face.

2. The camera module of claim 1, wherein the first end portion defines a plurality of notches, the end surface is circular, and the plurality of notches are evenly spaced along a circumferential direction of the end surface.

3. The camera module of claim 1, wherein the end surface further defines an annular groove, the at least one notch communicating with the annular groove.

4. The camera module of claim 1, wherein the lens holder comprises a bottom plate, the annular sidewall extends perpendicularly from an edge of the bottom plate, the annular sidewall and the bottom plate form a receiving cavity, the first end portion is received in the receiving cavity, the camera module further comprises a circuit board, an image sensor is electrically connected to the circuit board, the bottom plate forms a through hole communicated with the receiving cavity, and the image sensor faces the through hole.

5. The camera module as claimed in claim 4, wherein a sealant is disposed between the base plate and the circuit board.

6. The camera module of claim 4, wherein the image sensor and the through hole are square.

7. The camera module of claim 1, wherein the annular sidewall comprises a first sidewall and a second sidewall fixed on the first sidewall, an inner diameter of the second sidewall is larger than an inner diameter of the first sidewall, and the first internal thread is disposed on an inner surface of the first sidewall.

8. The camera module of claim 7, wherein the optical lens further comprises a cylindrical body fixed between the first end and the second end, the cylindrical body having an outer diameter greater than an outer diameter of the first end.

9. The camera module of claim 8, wherein an end of the second sidewall away from the first sidewall forms a plurality of recessed grooves, an end of the cylindrical body near the first end is opposite to the recessed grooves in a radial direction of the cylindrical body, and the recessed grooves are dispensed to connect the annular sidewall and the end of the cylindrical body near the first end.

10. The camera module as claimed in claim 1, wherein the lens barrel further includes an annular cover, a second internal thread is formed inside the annular cover, a second external thread is formed at the edge of the second end, and the second internal thread is engaged with the second external thread to fixedly connect the annular cover to the second end.

Technical Field

The invention relates to a camera module.

Background

The camera module generally includes a lens barrel and a lens base, which are engaged with each other by a screw. The mirror copper is generally made of metal, and the mirror base is generally made of plastic. Due to the difference between the metal processing characteristics and the plastic injection molding conditions, the phenomenon of overlarge torque force often occurs when the lens barrel and the lens base are locked and attached through threads, and the overlarge torque force can waste time and labor in the focusing process.

Disclosure of Invention

Accordingly, there is a need for a camera module with convenient focusing.

A camera module comprises a lens base and a lens barrel, wherein the lens base comprises an annular side wall, a first internal thread is arranged on the inner surface of the annular side wall, the lens barrel comprises an optical lens, the optical lens comprises a first end portion and a second end portion fixed on the first end portion, the first end portion comprises an end face and a side face perpendicular to the end face, a first external thread is formed on the side face, the first internal thread is screwed with the first external thread, and at least one notch extending from the end face to the second end portion is formed in the side face.

Further, the first end portion is provided with a plurality of notches, the end face is circular, and the notches are uniformly arranged at intervals along the circumferential direction of the end face.

Further, an annular groove is formed in the end face, and the at least one notch is communicated with the annular groove.

Further, the lens base comprises a bottom plate, the annular side wall extends vertically from the edge of the bottom plate, the annular side wall and the bottom plate form an accommodating cavity, the first end portion is accommodated in the accommodating cavity, the camera module further comprises a circuit board, an image sensor is electrically connected to the circuit board, a through hole communicated with the accommodating cavity is formed in the bottom plate, and the image sensor is opposite to the through hole.

Furthermore, a sealing glue is arranged between the bottom plate and the circuit board.

Further, the image sensor and the through hole are square.

Further, the annular side wall comprises a second side wall which is close to the first side wall and fixed on the first side wall, the inner diameter of the second side wall is larger than that of the first side wall, and the first internal thread is arranged on the inner surface of the first side wall.

Further, the optical lens further comprises a cylindrical body fixed between the first end portion and the second end portion, and the outer diameter of the cylindrical body is larger than that of the first end portion.

Furthermore, a plurality of concave grooves are formed in one end, far away from the first side wall, of the second side wall, one end, close to the first end, of the columnar body is opposite to the concave grooves in the radial direction of the columnar body, and glue is dispensed in the concave grooves to connect the annular side wall and one end, close to the first end, of the columnar body.

Further, the lens barrel further comprises an annular cover body, a second internal thread is formed on the inner side of the annular cover body, a second external thread is formed on the edge of the second end portion, and the second internal thread is screwed with the second external thread to enable the annular cover body to be fixedly connected with the second end portion.

The end part of the lens barrel of the camera module, which forms the first external thread, is also provided with the plurality of gaps, and even if the torsion between the first external thread and the first internal thread is overlarge in the focusing process, the end part can be allowed to slightly deform and release part of the torsion, so that the focusing is not time-consuming and labor-consuming, and the focusing is convenient.

Drawings

Fig. 1 is a perspective view of a camera module.

Fig. 2 is an exploded view of the camera module shown in fig. 1.

Fig. 3 is an exploded view of the camera module shown in fig. 1 in another direction.

Fig. 4 is a cross-sectional view taken along line IV-IV in fig. 1.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

Referring to fig. 1 to 4, a camera module 100 according to the present invention includes a circuit board 10, an image sensor 20 electrically connected to the circuit board 10, a lens holder 30 disposed on the circuit board 10, and a lens barrel 50 engaged with the lens holder 30. The camera module 100 may be used for an on-vehicle camera, a security camera, and the like.

The circuit board 10 is a hard board, a soft board or a rigid-flex board. In the present embodiment, the circuit board 10 is a ceramic board. The image sensor 20 is disposed on the circuit board 10. The circuit board 10 is provided with an electrical connector 15, and the electrical connector 15 is used for realizing signal transmission between the camera module 100 and the electronic device.

The Image Sensor 20 includes a photosensitive element (Image Sensor) and an Image Signal Processing Chip (ISP Chip), which are integrated together, and the photosensitive element may be a charge coupled device or a complementary metal oxide semiconductor. The image sensor 20 may be a ceramic Leaded Chip Carrier Package (CLCC), a Plastic Leaded Chip Carrier Package (PLCC) or a Chip Scale Package (CSP).

The lens holder 30 is fixed on the circuit board 10. The mirror base 30 includes a bottom plate 32 and an annular sidewall 34 extending perpendicularly from an edge of the bottom plate 32. The annular side wall 34 and the bottom plate 32 form a receiving cavity 33. The bottom plate 32 forms a through hole 31, and the image sensor 20 faces the through hole 31. In this embodiment, the image sensor 20 and the through hole 31 are square. The accommodating cavity 33 is communicated with the through hole 31. The inner surface of the annular side wall 34 near one end of the bottom plate 32 is provided with a first internal thread 36. The end of the annular side wall 34 away from the bottom plate 32 is formed with a plurality of circumferentially spaced concave grooves 35.

The annular sidewall 34 includes a first sidewall 37 near the bottom plate 32 and a second sidewall 38 fixed to an end of the first sidewall 37 far from the bottom plate 32. The second side wall 38 has an inner diameter larger than that of the first side wall 37. The first internal thread 36 is provided on an inner surface of the first side wall 37. The concave groove 35 is formed at an end of the second sidewall 38 away from the first sidewall 37.

A sealant 39 is disposed between the bottom plate 32 and the circuit board 10, and the sealant 39 is adhered to the circuit board 10 and the bottom plate 32 to fix the circuit board 10 and the bottom plate 32. The sealant 39 not only can fix the circuit board 10 and the lens holder 30, but also can prevent moisture from entering the through hole 31 and reaching the image sensor, thereby improving the image capturing quality. When the sealant 39 is a heat-conducting sealant, the heat generated by the image sensor 20 can be quickly conducted out of the camera module 100.

The lens barrel 50 includes an optical lens 52, and the optical lens 52 includes a first end 54 close to the base plate 32 and a second end 56 far from the base plate 32. The first end portion 54 is received in the receiving cavity 33. The first end 54 includes an end surface 51 facing the bottom plate 32 and a side surface 53 perpendicular to the end surface 51. The side 53 forms a first external thread 58. The first external thread 58 is screwed with the first internal thread 36 to fix the lens barrel 50 to the lens holder 30.

The side surface 53 further defines at least one notch 60 extending from the end surface 51 toward the second end 56. Because the notch 60 is formed on the side surface 53, when the lens barrel 50 is operated to rotate relative to the lens base 30 for focusing, even if the torsion between the first external thread 58 and the first internal thread 36 is too large, the existence of the notch 60 allows the first end portion 54 to be slightly deformed and releases part of the torsion, so that the torsion between the first external thread 58 and the first internal thread 36 is reduced, the focusing is not time-consuming and labor-consuming, and the focusing is convenient. In the present embodiment, the first end portion 54 is formed with a plurality of the notches 60, and the end surface 51 is circular like four notches 60, and the plurality of notches 60 are provided at regular intervals in the circumferential direction of the end surface 51.

The end surface 51 also forms an annular groove 62. The plurality of notches 60 are in communication with the annular groove 62. The first end 54 is deformable in the radial direction of the annular groove 62 when deformed, providing more room for releasing torque forces. The annular groove 62 separates the first end portion 54 into a lens portion 55 and a mounting portion 57. The notch 60 is formed on the mounting portion 57. The lens portion 55 is aligned with the through hole 31 and faces the image sensor 20.

The optical lens 52 further includes a cylindrical body 64 secured between the first end 54 and the second end 56. The cylindrical body 64 has an outer diameter greater than the outer diameter of the first end 54. An end of the cylindrical body 64 near the first end 54 is opposite to the concave groove 35 in a radial direction of the cylindrical body 64. The concave groove 35 is dispensing to connect the annular sidewall 34 and the end of the cylindrical body 64 close to the first end 54.

The lens barrel 50 further includes an annular cover 66. A second internal thread 61 is formed inside the annular cover 66. The second end 56 is spherical. The edge of the second end 56 forms a second external thread 63. The second internal threads 61 and the second external threads 63 are screwed together to fixedly connect the annular cover 66 and the second end 56.

The plurality of gaps 60 are also formed at the end of the lens barrel 50 of the camera module 100 where the first external thread 58 is formed, and even if the torsion between the first external thread 58 and the first internal thread 36 is too large during the focusing process, the existence of the plurality of gaps 60 can allow the first end 54 to slightly deform and release part of the torsion, so that the focusing is not time-consuming and labor-consuming, and the focusing is convenient.

It will be appreciated by those skilled in the art that the above embodiments are illustrative only and not intended to be limiting, and that suitable modifications and variations to the above embodiments are within the scope of the disclosure provided that the invention is not limited thereto.