CN113411484A

CN113411484A - Camera module and electronic equipment

Info

Publication number: CN113411484A
Application number: CN202110820140.3A
Authority: CN
Inventors: 杨泽; 聂磊; 李华聪; 张州辰; 彭士玮
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-09-17
Anticipated expiration: 2041-07-20
Also published as: CN113411484B; WO2023001055A1

Abstract

The application discloses module and electronic equipment make a video recording. Wherein, the module of making a video recording includes: the device comprises a shell, a lens assembly, an imaging assembly, a sliding rail structure, a first magnetic driving piece and a second magnetic driving piece; the lens assembly is fixed on the shell; the imaging component is arranged in the shell and is positioned in the optical axis direction of the lens component; the sliding rail structure is positioned between the imaging assembly and the shell, and the sliding direction of the sliding rail structure is the same as the direction of the optical axis; the first magnetic driving piece is arranged on the side surface of the imaging component, and the second magnetic driving piece is arranged on the inner wall of the shell; the first magnetic driving piece and the second magnetic driving piece are arranged oppositely; the imaging assembly is located in the optical axis direction of the lens assembly, and the magnetic driving force between the first magnetic driving piece and the second magnetic driving piece drives the imaging assembly to move close to or far away from the lens assembly along the optical axis direction through the sliding rail structure.

Description

Camera module and electronic equipment

Technical Field

The application relates to the technical field of electronic products, in particular to a camera module and electronic equipment.

Background

Portable digital products (such as smart phones, tablet computers, etc.) are generally equipped with a camera module. In order to ensure the imaging quality, the camera module also has an automatic focusing function, for example, the lens assembly is driven by the voice coil motor to complete automatic focusing. In order to guarantee that the camera module has better imaging effect, the quantity of lens is more and more in the camera lens subassembly, or adopts the higher glass lens of refracting index to replace original plastic lens, and these all will lead to the weight increase of camera lens to need the voice coil motor to produce bigger drive power and drive the camera lens subassembly at the automatic focusing in-process, cause the consumption increase of voice coil motor. The current camera module has the problem of large power consumption of a voice coil motor in the automatic focusing process.

Disclosure of Invention

The embodiment of the application provides a camera module and electronic equipment to solve the problem that the power consumption of a voice coil motor is large in the automatic focusing process of the existing camera module.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a camera module, including:

a housing;

the lens assembly is fixed on the shell;

the imaging assembly is arranged inside the shell and is positioned in the optical axis direction of the lens assembly;

the sliding rail structure is positioned between the imaging assembly and the shell, and the sliding direction of the sliding rail structure is the same as the direction of the optical axis;

the imaging component comprises a first magnetic driving piece and a second magnetic driving piece, wherein the first magnetic driving piece is arranged on the side surface of the imaging component, and the second magnetic driving piece is arranged on the inner wall of the shell; the first magnetic driving piece and the second magnetic driving piece are arranged oppositely;

the magnetic driving force between the first magnetic driving piece and the second magnetic driving piece drives the imaging component to move close to or far away from the lens component along the direction of the optical axis through the sliding rail structure.

In a second aspect, an embodiment of the present application further provides an electronic device, including the camera module described above.

Therefore, in the above scheme of the application, the imaging assembly is driven to move close to or away from the lens assembly along the optical axis direction through the slide rail structure through the magnetic driving force between the first magnetic driving piece and the second magnetic driving piece, so that the distance between the lens assembly and the imaging assembly in the optical axis direction is adjusted, that is, the focusing function of the camera module is realized, the moving direction of the imaging assembly is provided through the slide rail structure, the resistance of the imaging assembly in moving is reduced, the lens assembly is prevented from moving in the focusing function of the camera module, the increase of the driving power consumption caused by the increase of the weight of the lens assembly can be avoided, and the power consumption of the camera module in the focusing process is reduced to a greater extent; in addition, first magnetism driving piece and second magnetism driving piece in this scheme are located the side of formation of image subassembly, can reduce because first magnetism driving piece and second magnetism driving piece shared space in the optical axis direction to can guarantee to form an image under the condition that the adjustable distance satisfies the demand of focusing between subassembly and the lens subassembly, reduce the complete machine thickness of making a video recording the module.

Drawings

Fig. 1 is an exploded view of a camera module according to an embodiment of the present disclosure;

fig. 2 is a schematic perspective view of a camera module according to an embodiment of the present application;

fig. 3 is a schematic side view of a camera module according to an embodiment of the present disclosure;

FIG. 4 shows a schematic cross-sectional view of the plane A-A in FIG. 3;

FIG. 5 illustrates one of the partially exploded schematic views of an imaging assembly of an embodiment of the present application;

FIG. 6 shows one of the partial schematic views of an imaging assembly of an embodiment of the present application;

FIG. 7 shows one of the mounting diagrams of the imaging assembly and the flexible circuit board of an embodiment of the present application;

FIG. 8 is an exploded view of the second magnetic drive member and the housing according to an embodiment of the present application;

FIG. 9 is a schematic view of the second magnetic drive member of the present application mounted to the housing;

FIG. 10 shows an exploded view of a flexible circuit board and a first circuit board according to an embodiment of the present application;

FIG. 11 shows one of the mounting diagrams of the flexible circuit board and the first circuit board of the embodiment of the present application;

fig. 12 is a second exploded view of the camera module according to the embodiment of the present application;

fig. 13 is a schematic cross-sectional view of a camera module according to an embodiment of the present disclosure;

FIG. 14 illustrates a second partially exploded view of an imaging assembly in accordance with an embodiment of the present application;

FIG. 15 shows a second partial view of an imaging assembly in accordance with an embodiment of the present application;

fig. 16 is a second schematic view of the mounting of the imaging assembly and the flexible circuit board according to the embodiment of the present application.

Description of reference numerals:

10. a housing; 11. a housing body; 12. a base plate;

20. a lens assembly;

30. an imaging assembly; 31. a load bearing support; 311. a frame body; 312. a protrusion structure; 313. a notch; 314. a first protrusion; 315. a second protrusion; 316. a third protrusion; 317. a first groove; 32. a first circuit board; 33. an imaging chip; 34. an infrared filter;

40. a drive assembly; 41. a first magnetic driving member; 411. a first connection end; 412. a second connection end; 42. a second magnetic driving member;

50. a driving chip;

60. a first magnetic attraction plate; 61. a first mounting portion; 62. a second mounting portion; 63. a void avoidance area;

70. a support; 71. a second groove;

80. a ball bearing;

90. a flexible circuit board; 91. a connector;

100. a second magnetic attraction plate;

110. a second circuit board.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The camera module related to the embodiment of the application comprises key devices such as a lens assembly, a motor (which can also be called as a driving assembly), an imaging assembly and the like. The imaging assembly comprises an imaging chip and is used for converting optical signals into electric signals to realize imaging. The lens assembly comprises a lens for converging light rays on the imaging chip, and the motor is used for driving the imaging assembly to move so as to adjust the distance between the imaging assembly and the lens assembly on the optical axis, thereby realizing the focusing function.

Optionally, the motor may be a voice coil motor, and specifically may include an open-loop voice coil motor and a closed-loop voice coil motor; compared with a camera module (also called as an open-loop module) matched with an open-loop voice coil motor, the camera module matched with the closed-loop voice coil motor (also called as a closed-loop module) has the characteristics of high focusing precision, faster focusing and the like especially under a large aperture. Wherein, the closed loop module can include: ball type closed loop module, shell fragment formula closed loop module.

As shown in fig. 1 to 4, an embodiment of the present application provides a camera module, including: the lens module comprises a shell 10, a lens assembly 20, an imaging assembly 30, a driving assembly 40 and a sliding rail structure;

wherein, the lens assembly 20 is fixed on the housing 10; the imaging component 30 is connected with the driving component 40, the imaging component 30 and the driving component 40 are both arranged inside the housing 10, and the imaging component 30 is located in the optical axis direction of the lens component 20; the slide rail structure is located between the imaging assembly 30 and the housing 10, and the sliding direction of the slide rail structure is the same as the optical axis direction.

The driving component 40 drives the imaging component 30 to move closer to or away from the lens component 20 along the optical axis direction through the sliding track structure, that is, the driving component 40 may drive the imaging component 30 to move closer to the lens component 20 along the optical axis direction through the sliding track structure, or the driving component 40 may drive the imaging component 30 to move away from the lens component 20 along the optical axis direction through the sliding track structure.

Optionally, the housing 10 is used for fixing the lens assembly 20 and protecting the imaging assembly 30, the driving assembly 40, and the like therein. The case 10 may include a case body 11 and a bottom plate 10, and the bottom plate 10 may be a steel plate, for example.

Optionally, the lens assembly 20 includes a lens for converging light on the imaging assembly 30, where the number of the lens may be one or more, and may be specifically set according to a desired imaging effect, and the embodiment of the present application is not limited thereto.

Alternatively, the imaging component 30 is disposed in the optical axis direction of the lens component 20, so that the imaging component 30 can convert the optical signal transmitted through the lens component 20 into an electrical signal to realize imaging.

Alternatively, the driving assembly 40 may generate a driving force to drive the imaging assembly 30 to move closer to the lens assembly 20 in the optical axis direction or to drive the imaging assembly 30 to move away from the lens assembly 20 in the optical axis direction.

In the above solution, the lens assembly 20 is fixed on the housing 10, the imaging assembly 30 and the driving assembly 40 are disposed inside the housing 10, and a sliding rail structure is disposed between the housing 10 and the imaging assembly 40, so that the driving assembly 40 drives the imaging assembly 30 to move closer to the lens assembly 20 or away from the lens assembly 20 along the optical axis direction through the sliding rail structure, thereby adjusting the distance between the lens assembly 20 and the imaging assembly 30 along the optical axis direction, i.e. implementing the focusing function of the camera module. This scheme has avoided lens subassembly 20 to remove when realizing the function of focusing of the module of making a video recording, can avoid causing the consumption increase of drive assembly 40 because the increase of lens subassembly 20 weight to provide the moving direction of formation of image subassembly 40 through the slide rail structure, still be favorable to reducing the resistance when formation of image subassembly removes, thereby reduced the module of making a video recording in the consumption of focusing the in-process to a great extent.

In addition, in the camera module of the embodiment of the present application, since the lens assembly 20 is fixed on the housing 10, the imaging assembly 30 (for example, a large bottom chip is selected from the imaging assembly 30) of the camera module can carry a large-size lens (for example, the imaging effect is improved by increasing the number of lenses). And because lens subassembly 20 is fixed on casing 10, can reduce the silk screen printing and open the window, the electronic equipment who carries on this camera module covers the accommodation space that is used for setting up dustproof bubble cotton behind can avoiding reserving camera module and screen or the battery, lens subassembly 20 can the direct contact dustproof bubble cotton, dustproof effect has been promoted, also be favorable to the frivolous design of complete machine, and can also avoid because the abnormal sound that lens subassembly 20 removed and cause, reduce lens subassembly 20 striking electronic equipment inner structure risk, improve lens subassembly 20's reliability. Particularly, for the ultra-wide-angle camera module, the gap between the shell and the lens carrier in the camera module can be shielded to a greater extent, and the precision of the whole machine is improved.

With continued reference to fig. 1-4, the camera module includes: the lens module includes a housing 10, a lens assembly 20, an imaging assembly 30, a slide rail structure, a first magnetic driving member 41 and a second magnetic driving member 42.

The lens assembly 20 is fixed on the housing 10; the imaging assembly 30 is disposed inside the housing 10 and located in the optical axis direction of the lens assembly 20; the slide rail structure is located between the imaging assembly 20 and the housing 10, and the sliding direction of the slide rail structure is the same as the optical axis direction; the first magnetic driving element 41 is disposed on the side of the imaging assembly 30, and the second magnetic driving element 42 is disposed on the inner wall of the housing 10; the first magnetic driving member 41 is disposed opposite to the second magnetic driving member 42.

The magnetic driving force between the first magnetic driving element 41 and the second magnetic driving element 42 drives the imaging assembly 30 to move closer to or away from the lens assembly 20 along the optical axis direction through the sliding rail structure.

For example: the drive assembly 40 may comprise the first magnetic drive member 41 and the second magnetic drive member 42. The first magnetic driving component 41 and the second magnetic driving component 42 can generate a magnetic driving force along the optical axis direction, and the second magnetic driving component 42 disposed on the housing 10 can drive the first magnetic driving component 41 to drive the imaging component 30 to move relative to the housing 20 through the magnetic driving force, that is, the imaging component 30 moves closer to the lens component 20 along the optical axis direction through the slide rail structure, or the imaging component 30 moves away from the lens component 20 along the optical axis direction through the slide rail structure.

In this embodiment, the imaging component 30 is driven to move close to or away from the lens component 20 along the optical axis direction through the slide rail structure by the magnetic driving force between the first magnetic driving component 41 and the second magnetic driving component 42, so as to adjust the distance between the lens component 20 and the imaging component 30 in the optical axis direction, that is, to implement the focusing function of the camera module, and this scheme avoids the lens component 20 from moving when implementing the focusing function of the camera module, so as to avoid the increase of driving power consumption due to the increase of the weight of the lens component 20, thereby greatly reducing the power consumption of the camera module in the focusing process.

Moreover, the sliding structure 80 has the function of supporting and spacing the imaging assembly 30 and the housing 10, and also provides a sliding function between the imaging assembly 30 and the housing 10 to reduce the sliding resistance, so as to ensure that the imaging assembly 30 can effectively slide relative to the housing 10 under the magnetic driving force between the first magnetic driving member 41 and the second magnetic driving member 42, and further reduce the loss.

In addition, the first magnetic driving member 41 and the second magnetic driving member 42 in this scheme are located on the side of the imaging assembly 30, so that the space occupied by the first magnetic driving member 41 and the second magnetic driving member 42 in the optical axis direction can be reduced, and the overall thickness of the camera module can be reduced under the condition that the adjustable distance between the imaging assembly 30 and the lens assembly 20 meets the focusing requirement.

Wherein the imaging assembly 30 comprises: a carrier support 31, a first circuit board 32 and an imaging chip 33; the first magnetic driving element 41 is located at a first side of the carrying bracket 31; a first surface of the first circuit board 32 is connected to the bottom surface of the carrier 31, and the imaging chip 33 is disposed on the first surface; wherein the first side surface is disposed adjacent to the bottom surface.

Optionally, the imaging chip 33 is used to convert the optical signal transmitted through the lens assembly 20 into an electrical signal to realize imaging. The imaging chip 33 can be soldered on the first circuit board 32, for example, by soldering the imaging chip 33 on the first circuit board 32, so as to electrically connect with the traces (or other components) on the first circuit board 32.

Optionally, the bearing bracket 31 may be a plastic bracket, and is of a frame-shaped structure; for example, the carrier support 31 may include: a frame body 311, and a protrusion structure 312 disposed on the top surface of the frame body 311. The protrusion structure 312 may be disposed around a portion of the frame body 311, and particularly, may be sufficient to implement the movement of the imaging assembly 30 relative to the lens assembly 20.

Alternatively, the first circuit board 32 may include a center portion and an edge portion disposed to surround the center portion. The edge portion is connected to the bottom surface of the frame body 311 (the bottom surface is opposite to the top surface), the central portion corresponds to the central hollow area of the frame body 311, and the imaging chip 33 is disposed on the first surface of the first circuit board 32 and located at the central portion, so that the optical signal passing through the lens assembly 20 can pass through the central hollow area and be projected onto the imaging chip 33, thereby ensuring the imaging effect of the imaging chip 33.

Alternatively, the first surface of the central portion (i.e., the first surface of the first circuit board 32) may be provided with a cavity, the imaging chip 33 is fixed in the cavity, and the cavity may further be provided with electronic components such as a capacitor, a resistor, a register, and the like, which is not limited in this embodiment.

The bottom surface of the bearing bracket 31 (i.e., the bottom surface of the surrounding frame body 311) is a surface far away from (i.e., facing away from) the lens assembly 20, and the top surface of the bearing bracket 31 (i.e., the top surface of the surrounding frame body 311) is a surface close to (i.e., facing) the lens assembly 20. The first circuit board 32 is arranged on the bottom surface of the bearing support 31, and compared with the mode that the first circuit board 32 is arranged on the top surface of the bearing support 31, the imaging assembly 30 has larger moving space under the condition that the camera module has the same thickness, so that the camera module can be ensured to have larger focusing range, and the collision position and the imaging chip 33 have longer distance, the distance between the collision point and the imaging chip 33 is lengthened, a more effective dustproof structure is provided, and the arrangement of the circuit board in the camera module is convenient.

In this embodiment, the carrier 31, the first circuit board 32 and the imaging chip 33 may be fixed as a whole (e.g., fixed as a whole by dispensing or the like) to ensure the structural stability. The bearing bracket 31 is driven to move by the magnetic driving force between the first magnetic driving piece 41 and the second magnetic driving piece 42, so that the bearing bracket 31 drives the imaging chip 33 to move close to the lens assembly 20 or move away from the lens assembly 20 along the optical axis direction.

Wherein the imaging assembly 30 further comprises: and the infrared filter 34 is arranged between the bearing bracket 31 and the imaging chip 33, and the infrared filter 34 is arranged between the bearing bracket 31 and the imaging chip 33.

In this embodiment, the infrared filter 34 is used to cut off the infrared light to pass through, so as to ensure that the camera module has a better imaging effect.

Alternatively, the first magnetic driver 41 may be one of an electromagnet and a magnet (which may also be referred to as a magnet), and the second magnetic driver 42 may be the other of the electromagnet and the magnet. If the first magnetic driver 41 can be an electromagnet, the second magnetic driver 42 can be a magnet; the first magnetic drive 41 may be a magnet and the second magnetic drive 42 may be an electromagnet. For example: the electromagnet may be a coil that, in the energized state, may generate a magnetic field.

Wherein, the magnet and the electromagnet can form a driving system; if the first magnetic driving member 41 is an electromagnet and the second magnetic driving member 42 is a magnet, the magnet may be fixed on the inner surface of the housing by dispensing, and is used to provide a magnetic field, and cooperate with the electromagnet to generate a thrust to drive the imaging assembly 30 to move, that is, the electromagnet generates a magnetic field when being energized and generates a driving force under the magnetic field of the permanent magnet, so as to drive the imaging assembly 30 to move in the optical axis direction to approach the lens assembly 20 or move away from the lens assembly 20. And in the case where the first magnetic actuator 41 is an electromagnet and the second magnetic actuator 42 is a magnet, i.e., the magnet is fixed with respect to the housing 10, the space occupation can be reduced, and the power consumption can be further reduced by providing an electromagnet that follows the movement of the imaging assembly 30 due to the light weight of the electromagnet.

Optionally, the camera module further includes: a driving chip 50, the driving chip 50 being electrically connected to the electromagnet; if the first magnetic driving member 41 is an electromagnet, the driving chip 50 is connected to the first magnetic driving member 41.

The driving chip 50 is disposed on the first circuit board 32, and the driving chip 50 can be soldered on the first circuit board 32, for example, the driving chip 50 is soldered on the first circuit board 32 by soldering, so as to be electrically connected to the traces (or other components) on the first circuit board 32.

In this embodiment, the driving chip 50 supplies the electromagnet with a driving current so that the electromagnet generates a magnetic field when a current is passed through the electromagnet.

Optionally, the driving chip 50 may further include a position feedback element, and the position feedback element is configured to acquire the position information of the imaging chip 33.

In this embodiment, the position feedback element for position information feedback is integrated in the driving chip for driving the electromagnet, and the problem of magnetic interference that may occur when the position feedback element for position feedback and the driving chip 50 for driving the electromagnet are separately provided can be avoided.

For example: when the carrier 31 is driven to move upward (i.e. close to the imaging component 20) or downward (i.e. away from the imaging component 20), the position of the imaging chip 33 can be captured by a position feedback element built in the driving chip 50 and fed back to the driving chip 50, and the driving chip 50 can change the electric energy output to the electromagnet in combination with the image information processing result of the camera module, so that the imaging chip 33 can be driven by the carrier 31 to move to a clearly imageable position quickly and accurately along the optical axis direction, thereby completing the focusing function.

As shown in fig. 5 to 7, in a case that the driving chip 50 is disposed on the first circuit board 32, a notch 313 is disposed on a first side surface of the supporting bracket 31; the driving chip 50 is located in the gap 313, and the driving chip 50 protrudes from the first side surface.

In this embodiment, by providing the notch 313 on the carrier 31 to form a space for accommodating the driving chip 50, the increase of the thickness of the camera module caused by the thickness of the driving chip 50 can be avoided; and the driving chip 50 is disposed to protrude from the first side, which may facilitate the electrical connection of the driving chip 50 with the electromagnet.

Optionally, in a case where the first magnetic driving member 41 is the electromagnet and the driving chip 50 is disposed on the first circuit board 32, the image capturing module further includes: a first magnetic attraction plate 60; the first magnetic attraction plate 60 is disposed on a first side surface of the bearing bracket 31, and the first magnetic attraction plate 60 is located between the first magnetic driving member 41 and the bearing bracket 31.

The first magnetic attraction plate 60 may be attracted by the magnetic force of the second magnetic driving element 42, and the first magnetic attraction plate 60 may be a steel plate, a yoke plate, or the like, which is not limited in the embodiments of the present invention.

In this embodiment, the second magnetic driving member 42 can attract the first magnetic attraction plate 60, that is, the second magnetic driving member 42 can attract the first magnetic attraction plate 60 in the direction perpendicular to the optical axis, so as to ensure the connection reliability of the imaging chip 33, and avoid the step for fixing the carrying bracket 31 on the inner wall of the housing 10, so as to reduce the height in the Z direction (i.e., the optical axis direction), and thus reduce the height of the camera module. And the second magnetic driving member 42 and the first magnetic attraction plate 60 can form a magnetic circuit to ensure better magnetic gathering effect.

Optionally, the first magnetic attraction plate 60 comprises: first installation department 61 and follow the second installation department 62 that the first edge of first installation department 61 set up, second installation department 62 with be preset angle setting between the first installation department 61.

The first mounting portion 61 is fixed to a first side surface of the bearing bracket 31, and the first magnetic driving element 41 is located between the first mounting portion 61 and the bearing bracket 31; a groove is formed in the top surface of the bearing bracket 31, and the second mounting part 62 is clamped in the groove; the top surface and the bottom surface are arranged in a back-to-back manner.

Alternatively, the length of the second mounting portion 62 may be greater than the connecting length between the second mounting portion 62 and the first mounting portion 61, that is, at the connecting position of the second mounting portion 62 and the first mounting portion 61, the first magnetic attraction plate 60 has at least one notch; therefore, the groove matched with the shape of the second mounting part 62 is formed in the top surface of the bearing bracket 31, so that the first magnetic attraction plate 60 can be prevented from being separated from the groove along the direction perpendicular to the optical axis, and the mounting strength of the first magnetic attraction plate 60 and the bearing bracket is ensured. In addition, the first magnetic attraction plate 60 can be further fixed to the bearing bracket 31 by dispensing in addition to being clamped to the bearing bracket 31, so as to increase the connection strength.

Optionally, where the first magnetic drive 41 is the electromagnet, the first magnetic drive 41 comprises: a coil; the first side of the supporting bracket 31 is provided with a first protrusion 314, and the coil is wound on the first protrusion 314.

For example: the number of the first protruding portions 314 may be 2, the shape of the first protruding portions 314 may be a kidney shape, and the first protruding portions 314 may be specifically disposed according to the shape of the wound coil and the shape of the second magnetic driving element 41, which is not limited in this embodiment of the application.

Accordingly, the first mounting portion 61 of the first magnetic attraction plate 60 is further provided with a clearance area 63 corresponding to the first protrusion 314. Thus, when the first magnetic attraction plate 60 is mounted on the bearing bracket 31, the first protrusion 314 is located in the clearance area 63, so that the internal space of the camera module can be saved.

Optionally, in a case where the driving chip 50 is disposed on the first circuit board 32, the first side of the carrier 31 is further provided with a second protrusion 315 and a third protrusion 316.

The second protrusion 315 is disposed near the second side surface, and the first connection terminal 411 of the coil is disposed on the second protrusion 315 and electrically connected to the driving chip 50; wherein the second side is disposed adjacent to the first side.

The third protrusion 316 is disposed near the third side, and the second connection end 412 of the coil is disposed on the third protrusion 316 and electrically connected to the driving chip 50; wherein the third side is disposed adjacent to the first side.

Alternatively, the coil may be fixed on the carrier 31 by winding, dispensing, or the like. The coil may be electrically connected to the driving chip 50 disposed on the first circuit board 32 by soldering.

Optionally, in a case where the driving chip 50 is disposed on the first circuit board 32, a first chamfer is disposed on the infrared filter 34 at a position corresponding to the first connection end of the electromagnet, and a second chamfer is disposed on the infrared filter 34 at a position corresponding to the second connection end of the electromagnet.

In this way, chamfers are arranged at positions on the ir filter 34 corresponding to the first connection end 411 and the second connection end 412 of the coil, so as to avoid routing of the first connection end 411, the second connection end 412 and the driving chip 50, and ensure connection reliability between the coil and the driving chip 50.

In this embodiment, the coil is arranged on one side and is directly wound on the bearing bracket 31, so that the process operation is simplified and the design of the circuit board is reduced. And because the setting of unilateral coil for there is not the shielding characteristic when the coil is wound on bearing support 31, the coil of being more convenient for is wound, and can reduce the quantity of design chamfer on the infrared filter 34, have further simplified the technology operation.

As shown in fig. 8 and 9, the camera module further includes: a bracket 70, wherein the bracket 70 is fixed on the inner wall of the housing (i.e. the inner wall of the housing body 11), and the second magnetic driving member 42 is located between the bracket 70 and the housing (i.e. the second magnetic driving member 42 is located between the bracket 70 and the housing body 11).

Optionally, the bracket 70 may be fixed on the inner wall surface of the housing body 11 by dispensing, and the bracket 70 may further fix the second magnetic driving member 42 on the inner wall of the housing body 11 by a limiting structure, so as to ensure that the position consistency is better when the second magnetic driving member 42 is assembled. Of course, in order to ensure the fixing reliability of the second magnetic driving member 42, the second magnetic driving member 42 and the housing body 11 may be further fixed by dispensing.

Optionally, the slide rail structure includes: a plurality of balls 80, at least one first groove 317 disposed on a first side of the load bearing bracket 31, at least one second groove 71 disposed on the bracket 70.

The at least one first groove 317 and the at least one second groove 71 are disposed in a one-to-one correspondence manner, and an accommodating space is formed by the at least one first groove 317 and the at least one second groove 71, and each accommodating space is provided with the ball 80 therein. The balls have the function of supporting and spacing the carrier bracket 31 and the bracket 70, and also provide a sliding action between the carrier bracket 31 and the bracket 70 to reduce sliding resistance, thereby ensuring that the carrier bracket 31 can effectively slide relative to the bracket 70 under the action of the magnetic driving force between the first magnetic driving member 41 and the second magnetic driving member 42, and facilitating reduction of loss.

For example: the number of first grooves 317 is 2, and the number of corresponding second grooves 71 is 2; thus, 2 accommodating spaces, i.e., sliding tracks for accommodating the balls 80, can be formed by the 2 first grooves 317 and the 2 second grooves 71. Alternatively, one of the two sliding rails may be disposed near the second side of the carrying bracket 31 (i.e., disposed corresponding to the second protrusion 315), and the other sliding rail may be disposed near the third side of the carrying bracket 31 (i.e., disposed corresponding to the third protrusion 316).

As shown in fig. 4, 10 and 11, the camera module further includes: a flexible circuit board 90, a first portion of said flexible circuit board 90 being located within said housing and electrically connected to said first circuit board 32; a second portion of the flexible circuit board 90 is located outside the housing.

In this way, the first portion of the flexible circuit board 90 is connected to the first circuit board 32, and the second portion is disposed outside the housing and can be connected to an external device (e.g., a motherboard of an electronic device), that is, the flexible circuit board 90 can connect the motherboard of the electronic device to the first circuit board 32 inside the camera module.

The second portion of the flexible circuit board 90 may have a connector 91 thereon, and the connector 91 may be used for connecting with a main board of an electronic device, for example, the connector may be a board-to-board (BTB) connector, so that the flexible circuit board can be directly connected with the main board through the BTB connector.

Optionally, the first portion of the flexible circuit board 90 comprises: a central portion 901, an edge portion 902 and at least one connecting portion 903;

the central portion 901 is electrically connected to a first surface of the imaging assembly 30; the first surface is a surface disposed opposite the lens assembly 20; the edge portion 902 is disposed to surround the central portion 901, and the edge portion 902 is connected to the bottom surface of the case; the bottom surface of the shell is a surface far away from the lens assembly 20; the connecting portion 903 is connected to the central portion 901 and the edge portion 902.

Alternatively, the central portion 901 may be a protrusion, and the second surface of the first circuit board 32 may be provided with a groove corresponding to the central portion 901; alternatively, the central portion 901 may be a recess, and the second surface of the first electronic circuit board 32 may be provided with a protrusion corresponding to the central portion 901; alternatively, the central portion 901 and the second surface of the first circuit board 32 are both planar, and the embodiment of the present application is not limited thereto.

In this embodiment, the edge portion 902 of the flexible circuit board 90 is fixed to the bottom surface of the housing, and the central portion is fixed to the first circuit board 32, so that the electrical connection between the flexible circuit board 90 and the first circuit board 32 is ensured, and the connection reliability of the flexible circuit board 90 is also ensured; and the connecting part 903 of the flexible circuit board 90 is not fixed, and the connecting part 903 is not connected with the first circuit board 50, nor connected with the bottom surface of the housing, so that the flexible circuit board 90 provides an electric property and a function on the one hand, and provides a space for the flexible circuit board 90 to move along with the imaging component 30 on the other hand, so that when the imaging component 30 moves along the optical axis direction, the flexible circuit board 90 can flexibly move along with the imaging component 30 along the optical axis direction, and the fixed connection between the flexible circuit board 90 and the first circuit board 32 as well as the bottom surface of the housing is prevented from being damaged.

The central portion 901 may be electrically and structurally connected to the first circuit board 32 by gluing or the like. The edge portion 902 may be structurally attached to the bottom surface of the housing by gluing or the like.

Optionally, the routing length of the connecting portion 903 is greater than the distance from the first position to the second position;

wherein the first position is a position on the central portion 901 connected to the connecting portion 903, and the second position is a position on the edge portion 902 connected to the connecting portion 903.

For example: the connecting portion 903 may have a U-shape, an S-shape, an irregular curve shape, or the like, so that the trace length connected from the central portion 901 to the edge portion 902 is extended by the connecting portion 903, thereby providing a space for the flexible circuit board 90 to follow the movement of the imaging assembly 30.

Alternatively, the number of the connecting portions 903 may be 4, and may be located at four corners of the edge portion 902, respectively. One end of one connecting portion 903 is connected to a first edge (the first edge may be an end close to the connector 91 on the flexible circuit board 90 or an end far from the connector 91 on the flexible circuit board 90) on the center portion 901, and the other end is connected to a first corner of the edge portion 902 (in the case where the first edge is an end close to the connector 91 on the flexible circuit board 90, the first corner is an edge corner close to the end of the connector 91 on the flexible circuit board 90; in the case where the first edge is an end far from the connector 91 on the flexible circuit board 90, the first corner is an edge corner far from the end of the connector 91 on the flexible circuit board 90). Therefore, the flexible circuit board structure expanded in multiple directions is beneficial to reducing the resistance of the flexible circuit board structure, the requirement of driving force is reduced, and the power consumption is reduced.

Optionally, the housing 10 comprises: the housing body 11 and the bottom plate 12, for example, the bottom plate 12 may be a steel plate.

The housing body 11 is provided with a first opening and a second opening, the lens assembly 20 is disposed at the first opening, and the imaging assembly 30 and the driving assembly 40 are both disposed inside the housing body 11; the bottom plate 12 is disposed at the second opening, and the edge portion 902 is connected to the bottom plate 12; wherein, the first opening and the second opening are arranged oppositely.

Alternatively, the lens assembly 20 may be combined with the housing body 11 by means of threads, glue dispensing, snap fitting, etc., and ensure stable relative positions. The bottom plate 12 can be connected with the shell body 11 through glue dispensing, welding, clamping and the like, and plays a role in protecting the internal structure of the camera module.

The focusing process of the camera module is as follows:

in the case where the first magnetic driving member 41 is an electromagnet (i.e., a coil) and the second magnetic driving member 42 is a magnet, the magnet attracts the first magnetic attraction plate 60 and pulls the entire imaging assembly 30 toward one side of the magnet, while having sliding rails on both sides of the magnet for arranging the balls (i.e., the sliding structure 80). At this time, the imaging assembly 30 is closely attached to the balls of the sliding rail and can move in the optical axis direction.

When the first magnetic driving member 41 is energized, i.e. the coil is energized, the energized coil generates an ampere force under the magnetic field of the magnet, and pushes the imaging assembly 30 to move along the optical axis direction against the sliding rail. At this time, the central portion 901 of the flexible circuit board 90 moves along the optical axis direction along with the first circuit board 31 in the imaging assembly 30, and the connecting portion 903 of the flexible circuit board 90 deforms while remaining stationary due to the edge portion 902 of the flexible circuit board 90 being fixed to the bottom steel plate 12, so that the imaging chip 33 in the imaging assembly 30 can move close to the lens assembly 20 or move away from the lens assembly 20 along the optical axis direction, that is, a focusing process is achieved.

Alternatively, the imaging assembly 30 can move close to the lens assembly 20 or move away from the lens assembly 20 along the optical axis direction by controlling the current passing through the coils in different directions; and the imaging component 30 can move at different speeds along the direction of the optical axis by controlling currents with different magnitudes introduced into the coils, so that different focusing requirements are met.

As shown in fig. 12 and 13, an embodiment of the present invention further provides a camera module, including: the lens module comprises a shell 10, a lens assembly 20, an imaging assembly 30, a driving assembly 40 and a sliding rail structure;

The driving assembly 40 drives the imaging assembly 30 to move closer to or away from the lens assembly 20 along the optical axis direction through the slide rail structure.

Optionally, the housing 10 is used for fixing the lens assembly 20 and protecting the imaging assembly 30, the driving assembly 40, and the like therein. The case 10 may include a case body 11 and a bottom plate 12.

In the above solution, the lens assembly 20 is fixed on the housing 10, the imaging assembly 30 and the driving assembly 40 are disposed inside the housing 10, and a sliding rail structure is disposed between the housing 10 and the imaging assembly 40, so that the driving assembly 40 drives the imaging assembly 30 to move closer to the lens assembly 20 or away from the lens assembly 20 along the optical axis direction, thereby adjusting the distance between the lens assembly 20 and the imaging assembly 30 in the optical axis direction, i.e., implementing the focusing function of the camera module. This scheme has avoided lens subassembly 20 to remove when realizing the function of focusing of the module of making a video recording, can avoid causing the consumption increase of drive assembly 40 because the increase of lens subassembly 20 weight to provide the moving direction of formation of image subassembly 40 through the slide rail structure, still be favorable to reducing the resistance when formation of image subassembly removes, thereby reduced the module of making a video recording in the consumption of focusing the in-process to a great extent.

Wherein the driving assembly 40 includes: a first magnetic driver 41 and a second magnetic driver 42; the first magnetic driving component 41 is disposed on a side surface of the imaging component 30 (for example, the first magnetic driving component 41 may be disposed on a first side surface of the carrying bracket 31), the second magnetic driving component 42 is disposed on an inner wall of the housing 10, and the first magnetic driving component 41 and the second magnetic driving component 42 are disposed opposite to each other. The magnetic driving force between the first magnetic driving member 41 and the second magnetic driving member 42 drives the bearing bracket 31 to drive the imaging assembly 30 to move toward or away from the lens assembly 20 along the optical axis direction.

In this embodiment, the first magnetic driving element 41 and the second magnetic driving element 42 are located on the side of the imaging assembly 30, so that the space occupied by the first magnetic driving element 41 and the second magnetic driving element 42 in the optical axis direction can be reduced, and the overall thickness of the camera module can be reduced under the condition that the adjustable distance between the imaging assembly 30 and the lens assembly 20 is ensured to meet the focusing requirement.

Alternatively, the first magnetic driver 41 is an electromagnet and the second magnetic driver 42 is a magnet; the magnet and the electromagnet can form a driving system; the magnet may be fixed on the inner surface of the housing by dispensing, and is configured to provide a magnetic field, and cooperate with the electromagnet to generate a thrust to drive the imaging component 30 to move, that is, the electromagnet generates a magnetic field when being powered on, and generates a driving force under the magnetic field of the permanent magnet, so as to drive the imaging component 30 to move closer to the lens component 20 or move away from the lens component 20 along the optical axis direction. And in the case where the first magnetic actuator 41 is an electromagnet and the second magnetic actuator 42 is a magnet, i.e., the magnet is fixed with respect to the housing 10, the space occupation can be reduced, and the power consumption can be further reduced by providing an electromagnet that follows the movement of the imaging assembly 30 due to the light weight of the electromagnet.

Wherein, the module of making a video recording still includes: a driving chip 50, the driving chip 50 being electrically connected to the electromagnet; the driving chip 50 is connected to the first magnetic driving member 41. Optionally, the driving chip 50 is disposed on the first side of the supporting bracket 31.

As shown in fig. 14, by disposing both the driving chip 50 and the electromagnet on the first side of the carrier 31, compared with the above solution, the protrusion of the connection terminal for fixing the coil on the carrier 31 can be reduced, and the slot for disposing the driving chip on the carrier 31 can be reduced, thereby reducing the difficulty in processing the carrier 31. Meanwhile, under the condition that the driving chip 50 is arranged on the first side surface, the infrared filter 34 is rectangular, that is, in a manner that the driving chip 50 and the electromagnet are both arranged on the first side surface of the bearing support 31, the design of a protruding part of a connecting terminal for fixing a coil on the bearing support 31 can be cancelled, the design of an upper chamfer of the infrared filter 34 can be further cancelled, and the processing technology is further simplified.

Optionally, in a case that the first magnetic driving member 41 is the electromagnet and the driving chip 50 is disposed on the first side surface, the image capturing module further includes: a second circuit board 110.

The driving chip 50 and the electromagnet are disposed on a first surface of the second circuit board 110, and a second surface of the second circuit board 110 is connected to a first side surface of the supporting bracket 31; wherein the first surface is disposed opposite the second surface.

In this embodiment, the electromagnet (i.e., the coil) and the driving chip 50 are fixed on one side of the second circuit board 110 and have an electrical connection property, so that the driving chip 50 can provide electric power to the electromagnet to drive the electromagnet to generate a magnetic field.

As shown in fig. 14 and 15, the carrier bracket 31 is provided with a first protrusion 314 for winding a coil, the second circuit board 110 is provided with an opening avoiding the first protrusion 314, so as to ensure that the first surface of the second circuit board 110 can be attached to the carrier bracket 31, and the coil disposed on the second surface of the second circuit board 110 can be wound on the first protrusion 314.

Optionally, the camera module further includes: a second magnetic attraction plate 100; the second magnetic attraction plate 100 is disposed on a first side surface of the bearing bracket 31, and the bearing bracket 31 is located between the second circuit board 110 and the second magnetic attraction plate 100.

The second magnetic attraction plate 100 may be a structure that can be attracted by the magnetic force of the second magnetic driving element 42, for example, the second magnetic attraction plate 100 may be a steel plate, a yoke (or referred to as a "yoke") plate, and the like, which is not limited to this embodiment.

In this embodiment, the coil is located between the magnet and the second magnetic attraction plate 100, and the magnet and the second magnetic attraction plate 100 form a magnetic loop, which has the functions of gathering magnetism and lifting the coil thrust. And the magnetic attraction force of the magnet to the second magnetic attraction plate 100 can ensure the stability of the imaging component 30 in the shell, and the second magnetic attraction plate 100 is fixed on the inner side of the bearing support 31, so that the imaging component has a better effect of supporting the bearing support 31.

In this embodiment, the position feedback element for position information feedback is integrated in the driving chip 50 for driving the electromagnet, and the problem of magnetic interference that may occur when the position feedback element for position feedback and the driving chip 50 for driving the electromagnet are separately provided can be avoided. In addition, the driving chip 50 is arranged outside the coil in the scheme, so that the anti-interference performance is high, the driving chip is close to the magnet, and the position feedback precision is high.

As shown in fig. 10, 13 and 16, the camera module further includes: a flexible circuit board 90, a first portion of said flexible circuit board 90 being located within said housing and electrically connected to said first circuit board 32; a second portion of the flexible circuit board 90 is located outside the housing.

For a specific focusing process of the camera module in this embodiment, reference may be made to the above embodiments, and details are not repeated here to avoid repetition.

According to the embodiment of the application, the camera module with the large weight and high pixels of the lens adopts the mode of driving the imaging chip to realize focusing, the requirement on thrust during focusing can be greatly reduced, and the reduction of power consumption is facilitated. In addition, because the camera lens subassembly is fixed for the casing, can avoid the camera lens subassembly striking casing under the non-state of shooing, avoid producing the abnormal sound, the module of making a video recording can form a confined cavity simultaneously, has avoided the dust to get into the inside of the module of making a video recording, reduces the intrinsic dust of the module of making a video recording and falls to the probability on imaging chip surface at the module auto focus in-process of making a video recording to promote the camera quality. And when the shell is the iron shell, this iron shell can be connected with the bottom surface steel sheet and form the Electromagnetic shield structure of relative confined, can promote the anti-Electromagnetic Interference (EMI) effect of module of making a video recording, can reduce the mutual Interference of the module of making a video recording with antenna module among the electronic equipment, practice thrift the supplementary product and the relevant cost of the module of making a video recording in the complete machine assembling process that solve EMI problem.

The embodiment of the application can also combine the mode of driving the imaging chip to realize focusing with the technology of driving the lens assembly to focus, can increase the optical size movement amount and can achieve ultramicro distance focusing. The lens assembly capable of continuously zooming can be combined, so that the continuous zooming and the automatic focusing can be split into two movable parts, and the difficulty in realizing the conventional continuous zooming module motor can be reduced.

The embodiment of the invention also provides electronic equipment which comprises the camera module and can achieve the same technical effect of the camera module, and the details are not repeated for avoiding the repetition. For example, the electronic device may be a mobile phone, a tablet, and the like, which is not limited in this application.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure and, therefore, the scope of the disclosure is to be defined by the appended claims.

Claims

1. The utility model provides a module of making a video recording which characterized in that includes:

a housing;

the lens assembly is fixed on the shell;

2. The camera module of claim 1, further comprising:

a flexible circuit board, a first portion of the flexible circuit board being located within the housing and electrically connected to the imaging assembly; the second portion of the flexible circuit board is located outside the housing.

3. The camera module of claim 2, wherein the first portion of the flexible circuit board comprises:

a central portion electrically connected to a first surface of the imaging assembly; the first surface is a surface arranged opposite to the lens component;

an edge portion disposed around the central portion and connected with a bottom surface of the housing; the bottom surface of the shell is a surface far away from the lens assembly;

at least one connecting portion connected to the central portion and the edge portion.

4. The camera module according to claim 3, wherein the connecting portion has a routing length greater than a distance from the first position to the second position;

wherein the first position is a position on the central portion connected to the connecting portion and the second position is a position on the edge portion connected to the connecting portion.

5. The camera module of claim 1, wherein the imaging assembly comprises:

the first magnetic driving piece is arranged on a first side surface of the bearing bracket;

the imaging device comprises a first circuit board and an imaging chip, wherein a first surface of the first circuit board is connected with the bottom surface of the bearing support, and the imaging chip is arranged on the first surface;

wherein the first side surface is disposed adjacent to the bottom surface.

6. The camera module of claim 5, further comprising:

the support is fixed on the inner wall of the shell, and the second magnetic driving piece is located between the support and the shell.

7. The camera module of claim 6, wherein the slide rail structure comprises:

a plurality of balls;

at least one first groove arranged on the first side surface of the bearing bracket;

at least one second groove arranged on the bracket;

the at least one first groove and the at least one second groove are arranged in a one-to-one correspondence mode, an accommodating space is formed by the at least one first groove and the at least one second groove, and the ball is arranged in each accommodating space.

8. The camera module of claim 5, wherein the first magnetic actuator is one of an electromagnet and a magnet, and the second magnetic actuator is the other of the electromagnet and the magnet.

9. The camera module of claim 8, further comprising:

a driving chip electrically connected with the electromagnet;

the driving chip is arranged on the first circuit board, or the driving chip is arranged on the first side surface.

10. The camera module of claim 9, wherein the imaging assembly further comprises:

the infrared filter is arranged between the bearing bracket and the imaging chip;

under the condition that the driving chip is arranged on the first circuit board, a first chamfer is arranged on the infrared filter at a position corresponding to the first connecting end of the electromagnet, and a second chamfer is arranged on the infrared filter at a position corresponding to the second connecting end of the electromagnet; and under the condition that the driving chip is arranged on the first side face, the infrared filter is rectangular.

11. The camera module of claim 9, wherein the driver chip has a position feedback element for collecting position information of the imaging chip.

12. The camera module according to claim 9, wherein a notch is formed in the first side surface of the carrier bracket when the driver chip is disposed on the first circuit board;

the driving chip is positioned in the gap, and the driving chip is arranged to protrude out of the first side surface.

13. The camera module of claim 9, wherein when the first magnetic driving member is the electromagnet and the driving chip is disposed on the first circuit board, the camera module further comprises: a first magnetic attraction plate;

the first magnetic attraction plate is arranged on a first side face of the bearing support, and the first magnetic attraction plate is located between the first magnetic driving piece and the bearing support.

14. The camera module of claim 9, wherein when the first magnetic driving member is the electromagnet and the driving chip is disposed on the first side surface, the camera module further comprises: a second circuit board;

the driving chip and the electromagnet are arranged on the first surface of the second circuit board, and the second surface of the second circuit board is connected with the first side surface of the bearing support;

wherein the first surface is disposed opposite the second surface.

15. The camera module of claim 14, further comprising: a second magnetic attraction plate;

the second magnetic attraction plate is arranged on the first side face of the bearing support, and the bearing support is located between the second circuit board and the second magnetic attraction plate.

16. The camera module of claim 9, wherein in the case where the first magnetic driving member is the electromagnet, the first magnetic driving member comprises: a coil;

the first side surface of the bearing support is provided with a first protruding part, and the coil is wound on the first protruding part.

17. The camera module of claim 16, wherein in a case where the driver chip is disposed on the first circuit board, the first side surface of the carrier bracket is further provided with a second protrusion and a third protrusion;

the second protruding part is arranged close to the second side surface, and the first connecting end of the coil is arranged on the second protruding part and is electrically connected with the driving chip; wherein the second side is disposed adjacent to the first side;

the third protruding part is arranged close to the third side face, and the second connecting end of the coil is arranged on the third protruding part and is electrically connected with the driving chip; wherein the third side is disposed adjacent to the first side.

18. An electronic device comprising the camera module according to any one of claims 1 to 17.