WO2022155880A1

WO2022155880A1 - Camera module and electronic device

Info

Publication number: WO2022155880A1
Application number: PCT/CN2021/073223
Authority: WO
Inventors: 江传东
Original assignee: 欧菲光集团股份有限公司; 南昌欧菲光电技术有限公司
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-07-28

Abstract

Disclosed is a camera module, comprising a lens assembly, the lens assembly being provided with a first lens set, a second lens set and a third lens set, which are sequentially arranged along an optical axis. The first lens set comprises at least one first lens and a first lens seat bearing the first lens, a first drive member is mounted on the first lens seat, and the first drive member drives the second lens set and the third lens set to move in the direction of the optical axis. The second lens set comprises at least one second lens and a second lens seat bearing the second lens, the second lens seat is slidably connected to the first lens seat, a second drive member is mounted on the second lens seat, and the second drive member drives the third lens set to move in the direction of the optical axis. The third lens set comprises at least one third lens and a third lens seat bearing the third lens, and the second lens seat is slidably connected to the third lens seat. The second drive member drives the third lens set to move along the optical axis to realize the focusing of the camera module, and the first drive member drives the second lens seat to move along the optical axis to realize the zooming in/out of the camera module. Further disclosed is an electronic device.

Description

Camera module and electronic device

technical field

The present invention relates to the field of camera technology, in particular to a camera module and an electronic device.

Background technique

In order to obtain a higher magnification requirement than conventional camera modules without increasing the thickness of the mobile phone itself, consumers in the market are more accepting of camera modules with zoom function, and various electronic devices are equipped with zoom camera modules to obtain better performance. photo experience.

In the process of realizing the present application, the applicant found that there are at least the following problems in the prior art: the existing camera modules mostly use fixed focus, which cannot realize continuous optical zooming, and cannot realize rapid optical zooming during or after optical zooming. Real-time focus thus degrades the user experience.

SUMMARY OF THE INVENTION

In view of the above, it is necessary to provide a camera module and an electronic device to solve the above problems.

An embodiment of the present application provides a camera module including a lens assembly, a first drive assembly, a second drive assembly and a photosensitive assembly.

Specifically, the lens assembly includes a first mirror group, a second mirror group and a third mirror group arranged in sequence along the optical axis.

The first mirror group includes at least one first mirror lens and a first mirror base supporting the first mirror lens, a first driving member is installed on the first mirror frame, and the first driving member drives the second mirror The group and the third mirror group move in the direction of the optical axis.

The second lens group includes at least one second lens and a second lens seat supporting the second lens, the second lens seat is slidably connected with the first lens seat, and a second lens seat is mounted on the second lens seat Two driving components, the second driving component drives the third mirror group to move along the direction of the optical axis.

The third lens group includes at least one third lens and a third lens seat supporting the third lens, and the second lens seat is slidably connected with the third lens seat.

The photosensitive component is arranged on the image side of the third lens group.

In this way, the second drive member drives the third mirror base to drive the third mirror group to slide, changing the distance between the third mirror group and the second mirror group along the optical axis, so that the third mirror group and the second mirror group focus The first driving member drives the second mirror base to drive the second mirror group and the third mirror group to move, and changes the distance between the second mirror group and the third mirror group and the first mirror group along the optical axis direction, so as to achieve the first mirror group. The zoom effect between the group and the second lens group. In this way, continuous focusing and continuous zooming of the camera module are realized.

An embodiment of the present application further provides an electronic device, including the camera module described in the above embodiments. In this way, the electronic device can be provided with the functions of continuous zooming and focusing.

Additional aspects and advantages of embodiments of the present invention will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the invention.

Description of drawings

FIG. 1 is a schematic structural diagram of a camera module in a first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a camera module in a second embodiment of the present invention.

Description of main component symbols

Camera module

100, 200

Lens Assembly 10

Photosensitive component 40

The first mirror group 110

The first lens 1110

The second mirror group 120

The second lens 1210

The third mirror group 130

The third lens 1310

The third lens holder 210

Rails 202

Second lens mount 220

The second driver 230

The first mirror holder 310

The first driver 320

Second slider 212

Coil set 232

first slider 314

Piezo rod 324

Electromagnetic parts 510

Position sensor 520

Light steering element 60

Flat Components 62

Prism assembly 64

Magnetic parts 326

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to FIG. 1 , an embodiment of the present application provides a camera module 100 , which includes a light turning element 60 , a lens assembly 10 , a first driver 320 , a second driver 230 and a photosensitive assembly 40 , and is used to implement a camera module. 100 continuous focus and continuous zoom.

Specifically, the lens assembly 10 includes a first lens group 110 , a second lens group 120 and a third lens group 130 which are sequentially arranged along the optical axis.

The first lens group 110 includes at least one first lens 1110 and a first lens holder 310 supporting the first lens 1110 . The first lens holder 310 is mounted with a first driving member 320 , and the first driving member 320 drives the second mirror group 120 and the third mirror group 130 moves along the optical axis direction.

The second lens group 120 includes at least one second lens 1210 and a second lens base 220 supporting the second lens 1210 . The second lens base 220 is slidably connected to the first lens base 310 , and a second drive is installed on the second lens base 220 The second driving member 230 drives the third mirror group 130 to move along the optical axis direction.

The third lens group 130 includes at least one third lens 1310 and a third lens mount 210 supporting the third lens 1310 . The third lens mount 210 is slidably connected to the second lens mount 220 .

The photosensitive element 40 is disposed on the image side of the third lens group 130 .

In this way, the second driving member 230 drives the third mirror base 210 to slide, the position of the second mirror group 120 relative to the second mirror base 220 is fixed, and the third mirror group 130 is driven by the third mirror base 210 to connect with the second mirror group 120 The distance along the optical axis direction changes, so that the third mirror group 130 and the second mirror group 120 have a focusing effect; the first driving member 320 drives the second mirror base 220 to move, and the second mirror base 220 drives the second mirror group 120 and the third mirror base 210 move synchronously, and the first mirror group 110 moves relative to the second mirror base 220, so that the distance between the second mirror group 120 and the third mirror group 130 and the first mirror group 110 along the optical axis direction occurs. changes, so that a zoom effect is generated between the first lens group 110 and the second lens group 120 .

Referring to FIG. 1 , the present application provides a first embodiment. The camera module 100 includes a second sliding member 212 , the second sliding member 212 is connected with the second mirror base 220 , and the third mirror base 210 is slidably connected to the second sliding member 212 . Piece 212.

In this embodiment, the second sliding member 212 is set as two sliding rods arranged in parallel to each other to ensure the stability of the third mirror base 210 when moving. It is understood that in other embodiments, the second sliding member 212 It can also be set to one or several, and the second sliding member 212 can also be set to other components with sliding function.

The second driving member 230 includes two coil groups 232 , one of which is connected to the second mirror base 220 , the other coil group 232 is connected to the third mirror base 210 , and the two coil groups 232 are supplied with current in the same direction When the two coil groups 232 are attracted by an attractive force, the third mirror base 210 drives the third mirror group 130 to approach the second mirror group 120 along the second sliding member 212, and when the two coil groups 232 pass current in opposite directions, A repulsive force is generated between the two coil groups 232 , so that the third mirror base 210 drives the third mirror group 130 away from the second mirror group 120 along the second sliding member 212 , so as to change the direction of the second mirror group 120 and the third mirror group 130 . The distance in the direction of the optical axis further enables a focusing effect between the second mirror group 120 and the third mirror group 130, and the coil group is used as the driving force, which occupies a small space and has low magnetic interference.

The camera module 100 further includes a first sliding member 314 , and the second lens holder 220 is slidably connected to the first sliding member 314 .

Specifically, the first sliding member 314 is set as a sliding rod. It can be understood that in other embodiments, the first sliding member 314 can also be set as two or several sliding rods arranged in parallel with each other. The first sliding member 314 It can also be set to other parts with sliding function.

The first driving member 320 includes a piezoelectric rod 324. The piezoelectric rod 324 is arranged on the first mirror base 310 and is connected to the second mirror base 220. After the piezoelectric rod 324 is supplied with electric current, the second mirror base 220 can be driven along the first mirror base 220. The slider 314 slides.

In this way, the piezoelectric rod 324 generates a telescopic motion after the electric current is applied, and drives the second mirror base 220 to slide along the first sliding member 314 , and the second mirror base 220 drives the second mirror group 120 and the second mirror group 120 and the second mirror located on the second sliding member 212 . The three mirror bases 210 are moved so that the distances between the second mirror group 120 and the third mirror group 130 and the first mirror group 110 along the optical axis direction are changed, so that the distance between the second mirror group 120 and the first mirror group 110 is changed. For the zooming effect, the second lens mount 220 moves in a straight line under the driving of the piezoelectric rod 324, which improves the continuous stability of zooming.

The camera module 100 further includes an electromagnetic component 510 and a position sensing component 520 .

Specifically, the electromagnetic member 510 is disposed on the third mirror base 210 to generate a magnetic field after the two coil sets 232 are supplied with current, and the position sensing member 520 is disposed on the first mirror base 310 .

After the coil set 232 is energized, the electromagnetic component 510 is magnetized, and the electromagnetic component 510 generates a magnetic field. The position sensing component 520 senses the change of the magnetic field of the electromagnetic component 510 and converts it into an electrical signal, and the electrical signal is converted into a digital signal through the set conversion device. signal, according to the comparison between the digital signal and the stored database, determine the position of the second mirror base 220 relative to the position sensing element 520, and further convert the data signal, so as to determine the second mirror base 220 relative to the first mirror The position of the group 110 is fed back to the signal changing device, so as to monitor the zoom effect.

The light turning element 60 is disposed on the object side of the first mirror group 110 , so that the light source enters the camera module 100 and increases the range of the light entering the camera module 100 .

Further, the light turning element 60 includes a planar assembly 62 or a prismatic assembly 64 .

In this way, the use of the plane component 62 or the prism component 64 enables the camera module 100 to be applied to a non-periscope lens or a periscope lens, thereby increasing the use range of the camera module 100 with continuous zoom and focus.

Referring to FIG. 2 , the present application provides a second embodiment. In this embodiment, the camera module 200 is similar to the camera module 100 in the first embodiment. The camera module 200 includes a lens assembly 10 , a first driving member 320 , The second driving member 230 , the photosensitive member 40 , the position sensing member 520 and the light turning element 60 , the difference between this embodiment and the first embodiment is that the first driving member 320 , the second driving member 230 and the position sensing member 520 are different from the first embodiment. are different, as follows:

The second sliding member 212 is configured as a sliding rod, and the third mirror base 210 is slidably connected to the second sliding member 212 .

It can be understood that, in other embodiments, the second sliding member 212 can also be set as two or several sliding rods arranged in parallel with each other, and the second sliding member 212 can also be set as other components with sliding function.

The second driving member 230 includes a piezoelectric rod 324. The piezoelectric rod 324 is disposed on the second mirror base 220 and connected to the third mirror base 210. After the piezoelectric rod 324 is supplied with current, it can drive the third mirror base 210 along the second mirror base 210. The slider 212 slides.

In this way, the piezoelectric rod 324 produces a telescopic motion after the current is supplied, the piezoelectric rod 324 drives the third mirror base 210 to slide along the second sliding member 212 , and the third mirror base 210 drives the third mirror group 130 to move, so that the third mirror The position of the group 130 relative to the second mirror base 220 changes, and the position of the second mirror group 120 relative to the second mirror base 220 is fixed. Therefore, the distance between the third mirror group 130 and the second mirror group 120 along the optical axis direction occurs. The second mirror group 120 and the third mirror group 130 produce a focusing effect, and the third mirror group 130 moves in a straight line driven by the piezoelectric rod 324, which improves the continuous stability of focusing.

The camera module 200 includes a guide rail 202 . The guide rail 202 is disposed on the first mirror base 310 and arranged along the optical axis direction. The second mirror base 220 is slidably connected to the guide rail 202 .

Further, two guide rails 202 are arranged parallel to each other. It is understood that in other embodiments, the guide rails 202 can also be arranged as one or several, and the guide rails 202 can also be arranged as other components with sliding function.

The first driving member 320 includes a magnetic member 326 and a coil set 232 , the magnetic member 326 is arranged on the opposite side of the first mirror base 310 , the coil set 232 is arranged on the opposite side of the second mirror base 220 , and one coil set 232 corresponds to A magnetic piece 326, when the coil set 232 is fed with current in the same direction, the coil set 232 generates a magnetic field, the magnetic piece 326 is magnetized by the generated magnetic field, and the coil set 232 and the adjacent magnetic piece 326 generate an attractive force. Under the action, the second mirror base 220 drives the second mirror group 120 and the third mirror base 210 to move along the guide rail 202 toward the direction close to the first mirror group 110. When the coil group 232 passes current in the opposite direction, the coil group 232 generates a magnetic field, The magnetic element 326 is magnetized by the generated magnetic field, and the coil group 232 and the adjacent magnetic element 326 generate a repulsive force. Under the action of the generated repulsive force, the second mirror base 220 drives the second mirror group 120 and the third mirror base 210 along the guide rail. 202 moves in the direction away from the first mirror group 110, so that the distance between the second mirror group 120 and the first mirror group 110 along the optical axis direction changes, and the position of the first mirror group 110 relative to the guide rail 202 is fixed, thereby making the first mirror group 110. A zoom effect is produced between the second mirror group 120 and the first mirror group 110 , and the coil group 232 and the magnetic member 326 are used as driving forces, which occupy a small space and have low magnetic interference.

The camera module 200 further includes a position sensing element 520 , and the position sensing element 520 is disposed on the side of the second mirror base 220 close to the magnetic element 326 .

Further, the position sensing element 520 is disposed in the coil assembly 232 , the coil assembly 232 may form a cavity structure, and the position sensing element 520 is disposed in the cavity formed by the coil assembly 232 . In this way, the space occupied by the position sensing element 520 can be saved.

After the coil set 232 is energized, the magnetic element 326 is magnetized and a magnetic field is generated. The position sensing element 520 forms an electrical signal to the magnetic element 326 through the change of the magnetic field of the magnetic element 326. The electrical signal is converted into a digital signal through the set conversion device. The comparison between the digital signal and the stored database determines the position of the second mirror base 220 relative to the first mirror base 310, and further converts the data signal to judge the second mirror base 220 relative to the first mirror group 110. position, and feed back the data to the signal switching device, so as to monitor the zoom effect.

An embodiment of the present application also provides an electronic device (not shown in the figure), which includes the above-mentioned

camera module

100 or 200. In this way, the continuous zoom and focus structure provided by the

camera module

100 or 200 can enable the electronic device to have continuous zoom. and focus function.

The electronic devices of the embodiments of the present invention include, but are not limited to, smart phones, car cameras, surveillance cameras, tablet computers, notebook computers, electronic book readers, portable multimedia players (PMP), portable telephones, video telephones, digital Imaging-enabled electronic devices such as still cameras, mobile medical devices, wearable devices, etc.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are included in the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims

A camera module, comprising:

a lens assembly, comprising a first mirror group, a second mirror group and a third mirror group arranged in sequence along the optical axis;

The first mirror group includes at least one first mirror lens and a first mirror base supporting the first mirror lens, a first driving member is installed on the first mirror frame, and the first driving member drives the second mirror the group and the third mirror group move along the direction of the optical axis;

The second lens group includes at least one second lens and a second lens seat supporting the second lens, the second lens seat is slidably connected with the first lens seat, and a second lens seat is mounted on the second lens seat two driving parts, the second driving part drives the third mirror group to move along the optical axis direction;

The third lens group includes at least one third lens and a third lens seat supporting the third lens, and the second lens seat is slidably connected to the third lens seat;

The photosensitive component is arranged on the image side of the third mirror group.
The camera module according to claim 1, wherein the second driving member comprises two coil groups, wherein one coil group is connected to the second mirror group, and the other coil group is connected to the third mirror group. The mirror groups are connected, and after the two coil groups are supplied with current, an attractive force or a repulsive force is generated between the two coil groups, so as to drive the third mirror base to approach or move away from the second mirror base along the optical axis direction. mirror set.
The camera module according to claim 2, wherein the first driving member comprises a piezoelectric rod, and the piezoelectric rod is arranged on the first mirror base and connected with the second mirror base, The piezoelectric rod is used for driving the second mirror base to slide along the optical axis direction.
The camera module of claim 3, wherein the camera module further comprises:

an electromagnetic component, arranged on the third mirror base, to generate a magnetic field after the coil assembly is supplied with an electric current;

The position sensing element is arranged on the side of the first mirror base close to the second mirror base to sense the position of the second mirror base relative to the first mirror base.
The camera module of claim 1, wherein the second driving member comprises a piezoelectric rod, and the piezoelectric rod is disposed on the second mirror base and connected to the third mirror base , the piezoelectric rod is used to drive the third mirror base to slide along the optical axis direction.
The camera module according to claim 5, wherein the camera module further comprises a guide rail, the guide rail is arranged on the first mirror base and is arranged along the optical axis direction, and the second mirror base is connected to the optical axis. the guide rail is slidably connected;

The first driving element includes a magnetic element and a coil group, the magnetic element is arranged on the opposite side of the first mirror base, the coil group is arranged on the opposite side of the second mirror holder, and one coil The set corresponds to one of the magnetic components, the coil set generates a magnetic field after passing current, and the magnetic component and the coil set generate an attractive force or a repulsive force to drive the second mirror base to slide along the guide rail.
6. The camera module according to claim 6, wherein the camera module further comprises a position sensing element, and the position sensing element is arranged on the second mirror base to sense the relative position of the second mirror base to the position sensing element. the position of the first mirror group.
The camera module according to any one of claims 1 to 7, further comprising a light turning element, and the light turning element is arranged on the object side of the first mirror group.
The camera module according to claim 8, wherein the light redirecting element is a plane component or a prism component.
An electronic device, comprising the camera module according to any one of claims 1 to 9.