CN112616003B

CN112616003B - Camera module and electronic equipment

Info

Publication number: CN112616003B
Application number: CN202011629338.5A
Authority: CN
Inventors: 杨泽; 林杨
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-05-06
Anticipated expiration: 2040-12-30
Also published as: CN112616003A

Abstract

The application discloses camera module and electronic equipment, camera module includes: a drive motor; a lens disposed within the drive motor; the circuit board is connected with the driving motor; and at least one part of the position detection assembly is arranged outside the driving motor and is electrically connected with the circuit board. The driving motor that this scheme can solve present camera module existence drives power not enough and the relatively poor problem of formation of image effect.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of shooting devices, and particularly relates to a camera module and electronic equipment.

Background

Along with the increasing improvement of the life quality of people, more and more people like recording life in a shooting mode, so that the application range of the electronic equipment with the shooting function is wider and wider, and the requirements of people on the shooting effect are also continuously improved.

The camera module that can realize auto focus can improve the shooting effect better, and usually, the camera module can realize auto focus through the mode of driving motor drive camera lens motion, and this driving motor is equipped with driver chip and position detection subassembly, and this position detection subassembly is used for detecting whether the camera lens moves in place. In the existing camera module, parts such as a driving chip and a position detection assembly are integrated in a driving motor, so that the internal space of the driving motor is seriously occupied, and the size of a part for outputting driving force in the driving motor is small, so that the driving force of the driving motor is insufficient. Meanwhile, the space available for bearing the lens in the driving motor is also small, so that the specification of the lens is small, and the imaging effect is further poor.

Disclosure of Invention

The purpose of the embodiment of the application is to provide a camera module and electronic equipment, can solve the driving force of the driving motor that present camera module exists not enough and the relatively poor problem of formation of image effect.

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, which includes:

a drive motor;

a lens disposed within the drive motor;

the circuit board is connected with the driving motor;

and at least one part of the position detection assembly is arranged outside the driving motor and is electrically connected with the circuit board.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the above camera module.

In the embodiment of the application, at least one part of the position detection assembly is arranged outside the driving motor, and the part can be electrically connected with the circuit board, so that the part does not occupy the internal space of the driving motor, and the part of the driving motor for outputting the driving force can be properly increased, so that larger driving force can be output; meanwhile, the space of the driving motor for bearing the lens can be properly increased, so that the specification of the lens can be increased, and the imaging effect of the camera module can be improved.

Drawings

Fig. 1 is an exploded view of a camera module disclosed in an embodiment of the present application;

fig. 2 is a perspective view of a camera module disclosed in an embodiment of the present application;

fig. 3 is a front view of a camera module disclosed in an embodiment of the present application;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural diagram of a lens disclosed in an embodiment of the present application;

fig. 6 is a schematic view of a partial structure of a camera module disclosed in an embodiment of the present application;

fig. 7 is a matching diagram of a circuit board and a driving chip disclosed in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a filter assembly according to an embodiment of the present disclosure.

Description of reference numerals:

100-drive motor, 110-connection terminal, 121-lens carrier, 122-drive coil, 123-drive magnet, 124-housing;

200-a lens, 210-a light inlet, 220-a first surface and 230-a mounting groove;

300-circuit board, 310-circuit board main body, 320-auxiliary component, 330-photosensitive chip, 331-first edge, 332-second edge, 340-flexible circuit board and 350-connector;

400-position detection component, 410-hall element, 411-first hall element, 412-second hall element, 420-position feedback element;

500-a driver chip;

600-dust prevention;

700-filter component, 710-filter support, 711-avoidance groove and 720-filter.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes in detail a camera module and an electronic device provided in the embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

As shown in fig. 1 to 8, an embodiment of the present application discloses a camera module, which includes a driving motor 100, a lens 200, a circuit board 300, a position detecting assembly 400, and a driving chip 500.

The driving motor 100 can realize focusing of the camera module, the lens 200 is disposed in the driving motor 100, the driving motor 100 is connected to the lens 200, the circuit board 300 is connected to the driving motor 100, the circuit board 300 is provided with the photosensitive chip 330, at least a portion of the position detecting assembly 400 is disposed outside the driving motor 100 and electrically connected to the circuit board 300, in other words, a component of the position detecting assembly 400 disposed outside the driving motor 100 can be electrically connected to the circuit board 300. The driving chip 500 is used for controlling the operation state of the driving motor 100, and the driving chip 500 may be disposed in the driving motor 100.

Alternatively, the circuit board 300 may include a circuit board main body 310 and a flexible circuit board 340, the photosensitive chip 330 is disposed on the circuit board main body 310, one end of the flexible circuit board 340 is connected to the circuit board main body 310, and the other end is provided with a connector 350, the connector 350 is used for connecting to a main board of an electronic device, and the like. In addition, the circuit board 300 may be provided with at least one auxiliary component 320, and the auxiliary component 320 may assist the position detection assembly 400, the driving chip 500, and the like, where the auxiliary component 320 may be a sensor, a capacitor, and the like.

The driving motor 100 can apply an acting force to the lens 200, so as to drive the lens 200 to move relative to the photosensitive chip 330, thereby achieving the purpose of focusing. In the focusing process, the position detecting assembly 400 can detect the position of the lens 200 relative to the photosensitive chip 330 in real time, and feed back the detection data to the driving chip 500, and the driving chip 500 can accurately apply or change the electric energy of the driving motor 100 in combination with the real-time position of the lens 200 relative to the photosensitive chip 330 and the image information processing result of the camera module, so that the lens 200 is quickly and accurately driven to the position where clear imaging can be performed, thereby completing quick focusing.

In the embodiment of the present application, at least a portion of the position detecting assembly 400 is disposed outside the driving motor 100, and the portion may be electrically connected to the circuit board 300, so that the portion does not occupy the internal space of the driving motor 100, so that the portion of the driving motor 100 for outputting the driving force may be appropriately increased to output a larger driving force; meanwhile, the space of the driving motor 100 for carrying the lens 200 may be appropriately increased, so that the specification of the lens 200 may be increased, so as to improve the imaging effect of the camera module.

Optionally, the driving motor 100 may include a housing 124, a lens carrier 121, a driving coil 122 and a driving magnet 123, the lens carrier 121 is connected to the lens 200, optionally, the lens carrier 121 is provided with an inner hole for accommodating the lens 200, the inner hole may be a through hole or a threaded hole, the lens 200 may be in threaded fit with the threaded hole, and further, a dust-proof groove may be disposed at the bottom of the inner hole to achieve the purpose of dust-proof. One of the driving coil 122 and the driving magnet 123 is provided to the lens carrier 121, and the other is provided to the housing 124. Alternatively, the driving coil 122 may be provided to the lens carrier 121, and the driving magnet 123 may be provided to the housing 124; alternatively, the driving coil 122 may be provided to the housing 124 and the driving magnet 123 may be provided to the lens carrier 121. Regardless of the arrangement of the driving coil 122 and the driving magnet 123, when the driving coil 122 is powered on, it interacts with the driving magnet 123 to generate a magnetic force, and the magnetic force can drive the lens carrier 121 to move, so as to move the lens 200. The lens 200 is driven to move by the driving coil 122 and the driving magnet 123, so that the advantages of simple structure, reliable driving and the like are achieved.

Alternatively, the driving coil 122 may surround the lens carrier 121 to uniformly apply a force to the lens carrier 121, so that the lens carrier 121 may move more stably without being easily jammed.

In an optional embodiment, the driving motor 100 further includes a base, a first elastic sheet and a second elastic sheet, one of the first elastic sheet and the second elastic sheet is electrically connected to the circuit board 300, the first elastic sheet and the second elastic sheet are respectively located at two sides of the lens carrier 121, the first elastic sheet is provided with a first bearing portion, the second elastic sheet is provided with a second bearing portion, and the lens carrier 121 is supported by the first bearing portion and the second bearing portion. The lens carrier 121 can be suspended by the first elastic sheet and the second elastic sheet, so that the stroke of the driving motor 100 driving the lens carrier 121 to move is shortened, and the power consumption of the camera module is reduced.

In order to realize the connection between the second elastic sheet and the circuit board 300, the driving motor 100 may further include two connection terminals 110, and one end of each connection terminal 110 is fixed to the second elastic sheet and the other end is fixed to the circuit board 300.

In addition, the camera module may further include a filter assembly 700, where the filter assembly 700 includes a filter holder 710 and a filter 720, the driving motor 100 may be connected to the circuit board 300 through the filter holder 710, the filter 720 is disposed on the filter holder 710, and the filter 720 is located between the photosensitive chip 330 and the lens 200, so as to achieve a filtering effect. Further, the filter holder 710 is provided with an avoiding groove 711, one end of the connection terminal 110 can pass through the avoiding groove 711 and be connected with the circuit board 300, and in order to facilitate assembling the connection terminal 110, one end of the avoiding groove 711, which is away from the circuit board 300, can be provided with a chamfer so as to play a guiding role.

In an alternative embodiment, a portion of the position detecting assembly 400 is disposed on the lens 200, and another portion is disposed on the circuit board 300. Since the position detecting assembly 400 is used for detecting the position of the lens 200 relative to the sensor chip 330 in real time, a portion of the position detecting assembly 400 is disposed on the lens 200 and can move along with the lens 200, and another portion of the position detecting assembly is disposed on the circuit board 300, which facilitates obtaining the relative position change between the lens 200 and the sensor chip 330 and facilitating the electrical connection between the portion and the circuit board 300, so that the structural design of the position detecting assembly 400 can be simplified in this embodiment.

The structure of the position detecting assembly 400 can be flexibly selected as long as the position of the lens 200 relative to the photosensitive chip 330 can be detected. In an alternative embodiment, the position detecting assembly 400 includes a hall element 410 and a position feedback element 420, wherein the hall element 410 is disposed on the lens 200, and the position feedback element 420 is disposed on the circuit board 300. Alternatively, the hall element 410 may be specifically a hall magnet. When the lens 200 moves relative to the light sensing chip 330, the distance between the hall element 410 and the position feedback element 420 changes, the magnetic field of the hall element 410 changes, and the position feedback element 420 can sense the change of the magnetic field, so as to obtain the position of the lens 200 relative to the light sensing chip 330. The position detection assembly 400 has the advantages of simple structure, high detection precision and the like.

The lens 200 has a light inlet 210, and light can enter the camera module through the light inlet 210. The side of the lens 200 facing away from the light inlet 210 may be defined as a first side 220, the first side 220 faces the circuit board 300, and the hall element 410 may be disposed on the first side 220. Because the first surface 220 is closer to the circuit board 300, the distance between the hall element 410 and the position feedback element 420 can be shortened by the arrangement method, so that the acting force generated between the hall element 410 and the position feedback element 420 is more stable, and the accuracy of position detection and the sensitivity of the position detection assembly 400 are improved. In addition, the hall element 410 is disposed on the first surface 220, so that the hall element 410 is hidden, and the hall element 410 is not exposed to the external environment, thereby protecting the hall element 410.

In order to prevent the hall element 410 from interfering with the optical path, the hall element 410 may be disposed at an edge of the first face 220. In addition, first face 220 can be equipped with mounting groove 230, and hall element 410 sets up in mounting groove 230, so set up and to reduce the extra space that occupies of hall element 410 to make spare part in the camera module distribute compacter, the size of camera module reduces thereupon. Alternatively, the hall element 410 may be fixed in the mounting groove 230 by means of bonding, thereby improving the mounting strength of the hall element 410.

The number of the hall elements 410 may be one, in other embodiments, the number of the hall elements 410 is at least two, wherein the hall elements include a first hall element 411 and a second hall element 412, the first hall element 411 and the second hall element 412 are distributed on two sides of an optical axis of the lens 200, and further optionally, a central connecting line between the first hall element 411 and the second hall element 412 may intersect with the optical axis of the lens 200. The first hall element 411 and the second hall element 412 can both interact with the position feedback element 420 to acquire the position of the lens 200 relative to the light sensing chip 330, and the measured data can be corrected due to the different distribution positions of the first hall element 411 and the second hall element 412, so that the accuracy of the measured data is improved. In addition, once one of the first hall element 411 and the second hall element 412 is damaged, the other one can also interact with the position feedback element 420 to acquire the position of the lens 200 relative to the light sensing chip 330, so that the solution can also improve the reliability of position detection.

In an alternative embodiment, the photosensitive chip 330 has a first edge 331 and a second edge 332, the length of the first edge 331 is greater than the length of the second edge 332, and optionally, the photosensitive chip 330 may have a rectangular structure, the first edge 331 is a long edge of the photosensitive chip 330, and the second edge 332 is a short edge of the photosensitive chip 330. Further, the hall element 410 is disposed corresponding to the first edge 331, so that adverse effects on the optical path of the lens 200 can be alleviated or even avoided.

The hall element 410 and the position feedback element 420 may be arranged in a staggered manner, and in another embodiment, in a direction parallel to the optical axis of the lens 200, the orthographic projection of the hall element 410 and the orthographic projection of the position feedback element 420 at least partially coincide. This embodiment allows the hall element 410 and the position feedback element 420 to have a corresponding relationship in a direction parallel to the optical axis of the lens 200, i.e., the hall element 410 and the position feedback element 420 are arranged in a direction parallel to the optical axis of the lens 200, thereby enhancing the effect therebetween so as to obtain more accurate detection data. It should be noted that when the number of the hall elements 410 is at least two, only one position feedback element 420 may be provided, and in this case, one of the hall elements 410 and the position feedback element 420 may be arranged in a direction parallel to the optical axis of the lens 200.

It is mentioned above that the driving chip 500 may be disposed in the driving motor 100, and in other embodiments, the driving chip 500 may be disposed on a side of the circuit board 300 facing the lens 200. In this embodiment, the driving chip 500 no longer occupies the internal space of the driving motor 100, so the space of the driving motor 100 can be used for disposing a larger lens, or disposing other components. Meanwhile, the driving motor 100 can be a traditional open-loop motor, and the manufacturing difficulty of the motor is lower, so that the automatic manufacturing of the driving motor 100 is facilitated, and the manufacturing cost of the camera module is further reduced. In addition, the circuit board 300 is integrated with the driving chip 500, so that the assembly of the camera module is simpler.

In addition, the above scheme can omit a flexible circuit board for installing the driving chip 500, which is arranged by the traditional driving motor, and can omit a frame for fixing the flexible circuit board, thereby reducing the number of welding terminals, and being beneficial to the promotion of module stacking and module welding process. Therefore, the solution can simplify the structure of the driving motor 100, reduce the cost thereof, and facilitate the automated manufacturing.

When the photosensitive chip 330 has the first edge 331 and the second edge 332, and the length of the first edge 331 is greater than that of the second edge 332, the driving chip 500 may be located between the first edge 331 and the edge of the circuit board 300, where the space is relatively large, thereby being more beneficial to the arrangement of the driving chip 500.

In an alternative embodiment, the position feedback element 420 and the driving chip 500 form an integrated structure, that is, the position feedback element 420 and the driving chip 500 are integrated, which is more beneficial to assembling the camera module, and at the same time, the space occupied by the position feedback element 420 and the driving chip 500 can be further reduced. In another embodiment, the position feedback element 420 and the driving chip 500 are separately disposed, and the position feedback element 420 and the driving chip 500 are independently disposed at this time, which is more beneficial to the subsequent maintenance of the position feedback element 420 and the driving chip 500.

In order to prevent dust, the driving motor 100 is provided with a dust-proof member 600, and the dust-proof member 600 surrounds the lens 200. The dust-proof member 600 is closer to the lens 200, so that dust prevention can be achieved more directly and more efficiently. Alternatively, the dust-proof member 600 may be integrally disposed with the driving motor 100, which is more favorable for assembling the camera module; alternatively, the dust proof member 600 and the driving motor 100 are separately provided, so that the subsequent maintenance of the dust proof member 600 and the driving motor 100 is facilitated. When the bottom of the inner hole of the lens carrier 121 is provided with a dustproof groove and the driving motor 100 includes a base, the dustproof member 600 may be disposed at the through hole of the base for accommodating the lens 200, and the dustproof member 600 corresponds to the dustproof groove.

The embodiment of the application also discloses electronic equipment which comprises the camera module in any embodiment.

The electronic device disclosed in the embodiment of the present application may be a smart phone, a tablet computer, an electronic book reader, a wearable device (e.g., a smart watch), an electronic game machine, and the like, and the specific kind of the electronic device is not limited in the embodiment of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a camera module which characterized in that includes:

a drive motor (100), the drive motor (100) including a housing (124), a lens carrier (121), a drive coil (122), and a drive magnet (123), one of the drive coil (122) and the drive magnet (123) being provided to the lens carrier (121), and the other being provided to the housing (124);

the lens (200) is arranged in the driving motor (100), the lens (200) is connected with the lens carrier (121), the driving coil (122) is electrified and interacts with the driving magnet (123) to drive the lens carrier (121) and the lens (200) to move so as to realize focusing;

a circuit board (300), the circuit board (300) being connected to the driving motor (100);

the position detection assembly (400), the position detection assembly (400) with the circuit board (300) electricity is connected, the position detection assembly (400) includes hall element (410) and position feedback element (420), hall element (410) set up in camera lens (200), position feedback element (420) set up in circuit board (300).

2. The camera module according to claim 1, wherein the lens (200) has a light inlet (210), a first surface (220) is a surface of the lens (200) facing away from the light inlet (210), and the hall element (410) is disposed on the first surface (220).

3. The camera module according to claim 2, wherein the first surface (220) is provided with a mounting groove (230), and the hall element (410) is disposed in the mounting groove (230).

4. The camera module according to claim 2, wherein the number of the hall elements (410) is at least two, and the hall elements include a first hall element (411) and a second hall element (412), and the first hall element (411) and the second hall element (412) are distributed on two sides of an optical axis of the lens (200).

5. The camera module according to claim 2, wherein the circuit board (300) is provided with a photosensitive chip (330), the photosensitive chip (330) has a first edge (331) and a second edge (332), the length of the first edge (331) is greater than that of the second edge (332), and the hall element (410) is disposed corresponding to the first edge (331).

6. The camera module according to claim 1, characterized in that the orthographic projection of the hall element (410) at least partially coincides with the orthographic projection of the position feedback element (420) in a direction parallel to the optical axis of the lens (200).

7. The camera module according to claim 1, further comprising a driving chip (500), wherein the driving chip (500) is disposed on a side of the circuit board (300) facing the lens (200).

8. The camera module according to claim 7, wherein the circuit board (300) is provided with a photosensitive chip (330), the photosensitive chip (330) has a first edge (331) and a second edge (332), the length of the first edge (331) is greater than the length of the second edge (332), and the driving chip (500) is located between the first edge (331) and the edge of the circuit board (300).

9. The camera module according to claim 1, wherein the driving motor (100) is provided with a dust-proof member (600), the dust-proof member (600) surrounding the lens (200).

10. An electronic device, comprising the camera module according to any one of claims 1 to 9.