WO2021136280A1

WO2021136280A1 - Zoom lens, camera module, and electronic device

Info

Publication number: WO2021136280A1
Application number: PCT/CN2020/140927
Authority: WO
Inventors: 徐青
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-12-31
Filing date: 2020-12-29
Publication date: 2021-07-08
Also published as: CN111175952A

Abstract

Disclosed are a zoom lens (10), a camera module (100) and an electronic device (1000). The zoom lens (10) comprises a shell (11), a first lens assembly (12), a second lens assembly (13), a third lens assembly (14), and a driving chip (161), which comprises a first control end (1611) for controlling the second lens assembly (13) to move and a second control end (1612) for controlling the third lens assembly (14) to move. An effective control bit of the driving chip (161) is greater than or equal to a predetermined value.

Description

Zoom lens, camera module and electronic device

Priority information

This application requests the priority and rights of the patent application with the patent application number 201911417933.X filed with the State Intellectual Property Office of China on December 31, 2019, and the full text is incorporated herein by reference.

Technical field

This application relates to the technical field of consumer electronics, in particular to a zoom lens, a camera module and an electronic device.

Background technique

In the related art, the zoom lens can realize the change of the overall focal length through the movement of the lens group. However, most of the current drive chips are only suitable for realizing the focusing of the fixed-focus lens. Because the lens group moves within a small range during focusing, it is very important for the drive chip. The output accuracy requirement is not high.

Summary of the invention

The embodiments of the present application provide a zoom lens, a camera module, and an electronic device.

The zoom lens of the embodiment of the present application includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, and a driving chip. The first lens assembly, the second lens assembly and the third lens assembly are arranged in the housing. The second lens assembly and the third lens assembly are both located on the optical axis of the first lens assembly. The driving chip includes a first control terminal and a second control terminal, and the first control terminal is connected to the second lens assembly for controlling the second lens assembly relative to the first lens along the optical axis. The component moves; the second control end is connected with the third lens component for controlling the third lens component to move relative to the first lens component along the optical axis; the effective control position of the drive chip is greater than Or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.

The camera module of the embodiment of the present application includes a photosensitive element and a zoom lens. The photosensitive element is arranged on the image side of the zoom lens. The zoom lens includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, and a driving chip. The first lens assembly, the second lens assembly and the third lens assembly are arranged in the housing. The second lens assembly and the third lens assembly are both located on the optical axis of the first lens assembly. The driving chip includes a first control terminal and a second control terminal, and the first control terminal is connected to the second lens assembly for controlling the second lens assembly relative to the first lens along the optical axis. The component moves; the second control end is connected with the third lens component for controlling the third lens component to move relative to the first lens component along the optical axis; the effective control position of the drive chip is greater than Or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.

The electronic device of the present application includes a casing and the camera module of the above-mentioned embodiment. The camera module is installed on the casing. The camera module includes a photosensitive element and a zoom lens. The photosensitive element is arranged on the image side of the zoom lens. The zoom lens includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, and a driving chip. The first lens assembly, the second lens assembly and the third lens assembly are arranged in the housing. The second lens assembly and the third lens assembly are both located on the optical axis of the first lens assembly. The driving chip includes a first control terminal and a second control terminal, and the first control terminal is connected to the second lens assembly for controlling the second lens assembly relative to the first lens along the optical axis. The component moves; the second control end is connected with the third lens component for controlling the third lens component to move relative to the first lens component along the optical axis; the effective control position of the drive chip is greater than Or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.

The additional aspects and advantages of the embodiments of the present application will be partly given in the following description, and part of them will become obvious from the following description, or be understood through the practice of the embodiments of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the embodiments of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a schematic plan view of an electronic device according to some embodiments of the present application.

FIG. 2 is a schematic plan view from another perspective of the electronic device according to some embodiments of the present application.

FIG. 3 is a schematic diagram of a three-dimensional assembly of a zoom lens according to some embodiments of the present application.

FIG. 4 is a three-dimensional exploded schematic diagram of a zoom lens according to some embodiments of the present application.

FIG. 5 is a schematic plan view of a driving chip according to some embodiments of the present application.

6a and 6b are schematic cross-sectional views of the zoom lens in FIG. 3 along the line VI-VI under different focal lengths.

FIG. 7 is a schematic plan view of a lens of a zoom lens in some embodiments.

8a and 8b are schematic diagrams of the positions of the second lens assembly and the third lens assembly in different focal length states in some embodiments.

FIG. 9 is a schematic diagram of the relationship between the stroke and the current of the second lens assembly and the third lens assembly of the zoom lens in some embodiments.

FIG. 10 is a schematic cross-sectional view of the zoom lens in some embodiments taken by the section line corresponding to the line VI-VI in FIG. 3.

FIG. 11 is a schematic cross-sectional view of the zoom lens in FIG. 3 along the line XI-XI.

Detailed ways

The implementation of the present application will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings indicate the same or similar elements or elements with the same or similar functions throughout.

In addition, the implementation manners of the present application described below in conjunction with the drawings are exemplary, and are only used to explain the implementation manners of the present application, and should not be construed as limiting the application.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the level of the first feature is smaller than the second feature.

The zoom lens of the embodiment of the present application includes a housing, a first lens assembly, a second lens assembly, and a third lens assembly disposed in the housing, and a driving chip. The second lens assembly and the third lens assembly are both located in the first lens assembly. The drive chip includes a first control end and a second control end, the first control end is connected with the second lens assembly for controlling the second lens assembly to move along the optical axis relative to the first lens assembly; the second control end It is connected with the third lens assembly for controlling the movement of the third lens assembly relative to the first lens assembly along the optical axis; the effective control position of the driving chip is greater than or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.

In some embodiments, the predetermined value is a positive integer greater than or equal to 13, and when the moving stroke range of the zoom lens is certain, the predetermined value and the minimum moving unit are negatively correlated.

In some embodiments, the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis, and the first control end and the second control end cooperate to control the second lens assembly and the third lens assembly, respectively Moving relative to the first lens assembly to enable the zoom lens to switch between the short focus state and the long focus state, the second control end is also used to control the focusing of the third lens assembly in the short focus state and the long focus state.

In some embodiments, the zoom lens can be switched between the short focus state and the long focus state, and the driving chip further includes a third control terminal, which is used to control the movement of the third lens assembly along the optical axis to make the zoom The lens achieves focusing in the short focus state and the long focus state.

In some embodiments, the zoom lens further includes a fourth lens assembly disposed in the housing, and the driving chip further includes a third control terminal connected to the fourth lens assembly to control the fourth lens assembly along the optical axis. Move relative to the first lens assembly.

In some embodiments, the zoom lens further includes a first driving part and a second driving part. The first control end is connected to the second lens assembly through the first driving part, and the first control end is used to control the movement of the first driving part. Drive the second lens assembly to move relative to the first lens assembly along the optical axis; the second control end is connected to the third lens assembly through the second drive element, and the second control end is used to control the movement of the second drive element to drive the third lens assembly along the The optical axis moves relative to the first lens assembly.

In some embodiments, the first driving member includes a first coil and a first magnet, the second driving member includes a second coil and a second magnet, the first magnet and the second lens assembly are connected, and the second magnet and the third lens The first control terminal is connected to the first coil. The first control terminal is used to control the current input to the first coil to drive the first magnet to drive the second lens assembly to move relative to the first lens assembly along the optical axis. The second control The terminal is connected with the second coil, and the second control terminal is used to control the current input to the second coil to drive the second magnet to drive the third lens assembly to move relative to the first lens assembly along the optical axis.

In some embodiments, the housing includes a substrate, the bearing surface of the substrate is provided with a slide rail, the surfaces of the second lens assembly and the third lens assembly opposite to the bearing surface are both provided with balls, the second lens assembly and the third lens The ball of the assembly is slidably connected with the sliding rail, so that the second lens assembly and the third lens assembly move relative to the first lens assembly.

In some embodiments, the zoom lens further includes a prism assembly and an anti-vibration driver arranged in a housing. The housing includes a substrate. The prism assembly, the first lens assembly, the second lens assembly, and the third lens assembly are arranged in sequence along the optical axis. Set on the bearing surface of the substrate, the driving chip further includes a first anti-shake control terminal and a second anti-shake control terminal. Both the first anti-shake control terminal and the second anti-shake control terminal are connected to the anti-shake driver. The first anti-shake control end is used to control the movement of the anti-shake drive to drive the movement of the prism component in the first direction, and the second anti-shake control end is used to control the movement of the anti-shake drive to drive the prism assembly. For movement in the second direction, the optical axis, the first direction and the second direction are perpendicular to each other.

In some embodiments, the first direction is parallel to the bearing surface and perpendicular to the optical axis, the second direction is perpendicular to the bearing surface, and the bearing surface is parallel to the optical axis.

In some embodiments, the prism component includes a prism. The prism includes an incident surface, a reflective surface, and an exit surface that are sequentially connected. The first lens component is opposite to the incident surface or the exit surface, and the reflective surface is used to reflect light incident from the incident surface. So that the light is emitted from the exit surface.

In some embodiments, the second control terminal is also used to control the third lens assembly to move closer to or away from the first lens assembly along the optical axis, and to stop moving the first lens assembly when the sharpness of the image captured by the zoom lens reaches a preset sharpness. Three lens assembly.

The camera module of the embodiment of the present application includes a photosensitive element and a zoom lens. The photosensitive element is arranged on the image side of the zoom lens. The zoom lens includes a housing, a first lens assembly, a second lens assembly, and a third lens assembly arranged in the housing, and a driving chip. The second lens assembly and the third lens assembly are both located on the optical axis of the first lens assembly; The driving chip includes a first control terminal and a second control terminal. The first control terminal is connected to the second lens assembly for controlling the movement of the second lens assembly relative to the first lens assembly along the optical axis; the second control terminal and the third lens assembly The connection is used to control the movement of the third lens assembly relative to the first lens assembly along the optical axis; the effective control position of the driving chip is greater than or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.

The electronic device of the embodiment of the present application includes a casing and the camera module of any one of the above embodiments, and the camera module is mounted on the casing.

Please refer to FIG. 1 and FIG. 2, the electronic device 1000 includes a casing 200 and a camera module 100. The camera module 100 is combined with the casing 200. Specifically, the electronic device 1000 may be a mobile phone, a tablet computer, a display, a notebook computer, a teller machine, a gate, a smart watch, a head-mounted display device, a game console, and the like. The embodiments of the present application are described by taking the electronic device 1000 as a mobile phone as an example. It can be understood that the specific form of the electronic device 1000 is not limited to a mobile phone.

The housing 200 can be used to install the camera module 100, or in other words, the housing 200 can be used as a mounting carrier of the camera module 100. The electronic device 1000 includes a front 901 and a back 902. The camera module 100 can be set on the front 901 as a front camera, and the camera module 100 can also be set on the back 902 as a rear camera. In the embodiment of the present application, the camera module 100 is set On the back 902 as a rear camera. The housing 200 can also be used to install functional modules such as the camera module 100, power supply device, and communication device of the electronic device 1000, so that the housing 200 provides protections such as dustproof, anti-drop, and waterproof for the functional modules.

Referring to FIGS. 3 to 5, the camera module 100 includes a zoom lens 10 and a photosensitive element 50, and the photosensitive element 50 is installed on the image side of the zoom lens 10. The photosensitive element 50 may be a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) photosensitive element or a charge-coupled device (Charge-coupled Device, CCD) photosensitive element.

Referring to FIGS. 3 to 5, the zoom lens 10 according to the embodiment of the present application includes a housing 11, a first lens assembly 12, a second lens assembly 13, a third lens assembly 14 and a driving chip 161. The first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are arranged in the housing 11. The second lens assembly 13 and the third lens assembly 14 are all located on the optical axis O of the first lens assembly 12. The optical axis O of the lens assembly 12, the optical axis of the second lens assembly 13 and the optical axis of the third lens assembly 14 coincide. The driving chip 161 includes a first control terminal 1611 and a second control terminal 1612. The first control terminal 1611 is connected to the second lens assembly 13 for controlling the second lens assembly 13 to move relative to the first lens assembly 12 along the optical axis O; The second control end 1612 is connected to the third lens assembly 14 for controlling the movement of the third lens assembly 14 relative to the first lens assembly 12 along the optical axis O; the zoom lens 10 can control the second lens assembly 13 and the third lens assembly 14 along the The optical axis O moves relative to the first lens assembly 12 to switch between the short focus state and the long focus state. The effective control bit of the driving chip 161 is greater than or equal to a predetermined value, so that the minimum movement unit of the zoom lens 10 meets the predetermined movement accuracy, wherein the minimum movement unit is that the driving chip 161 can control the second lens assembly 13 and/or the third lens assembly 14 The minimum distance of each movement, the minimum movement unit corresponding to the predetermined movement accuracy can be 0.5 μm, 1 μm, 2 μm, etc. In the embodiment of the present application, the minimum movement unit corresponding to the predetermined movement accuracy is 0.5 μm.

The predetermined value may be a positive integer greater than or equal to 13. For example, the predetermined value is 13, 14, 15, 16, etc., the effective control bit of the driving chip 161 may be 13, 14, 15, 16, etc. The effective control bit is the number of pins that can be used to control the movement of the lens assembly (such as the second lens assembly 13 and/or the third lens assembly 14) among all the pins of the drive chip 161. For example, the number of pins in the drive chip 161 that can be used to control the movement of the lens assembly If the number of pins is 13, the effective control bit of the drive chip 161 is 13. In the case that the movement stroke range of the second lens assembly 13 and the third lens assembly 14 is constant, the predetermined value is negatively related to the minimum movement unit. For example, when the movement stroke range is constant (for example, 4096 micrometers (μm)), As the predetermined value increases (that is, the effective control bit of the driver chip increases), the minimum movement unit corresponding to the smallest signal that can be output will continue to decrease, such as increasing from 10 bits to 13 bits, the corresponding minimum movement The unit is changed from 4μm to 0.5μm, and the movement accuracy is significantly increased.

In a zoom lens, the movement range of the lens group of the zoom lens is relatively large. If the driving chip for focusing is used to control the movement of the lens group of the zoom lens, the movement accuracy of the lens group will be reduced.

In the zoom lens 10 of the embodiment of the present application, the driving chip 161 controls the second lens assembly 13 and the third lens assembly 14 to move relative to the first lens assembly 12 along the optical axis O through the first control terminal 1611 and the second control terminal 1612, respectively. The focal length of the zoom lens 10 can be changed. Since the effective control bit of the drive chip 161 is greater than or equal to 13, it is ensured that the smallest unit of the output signal of the drive chip 161 corresponds to the smallest moving unit, such as the drive chip 161 The minimum unit of the output signal corresponds to the minimum movement unit of 0.5 micrometers (μm), then the driving chip 161 can control the second lens assembly 13 and/or the third lens assembly 14 to move at a minimum distance of 0.5 micrometers each time, and the driving chip 161 can The stroke range for controlling the movement of the second lens assembly 13 and/or the third lens assembly 14 is relatively large (if the effective control position is 13, the stroke range is 2^13*0.5=4096μm), thereby realizing the lens assembly of the zoom lens 10 ( For example, the second lens assembly 13 and the third lens assembly 14) move with high precision and a wide range during zooming.

As shown in Figure 3, for the convenience of subsequent description, the direction parallel to the optical axis O is defined as the x direction, and the two directions perpendicular to the x direction are defined as the y direction and the z direction, namely, the x direction, the y direction and the z direction. Two by two are perpendicular to each other.

Referring to FIGS. 3, 4, 6a and 6b, the zoom lens 10 includes a housing 11, a prism assembly 15, a first lens assembly 12, a second lens assembly 13, a third lens assembly 14, and a driving assembly 16. The prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are sequentially arranged in the housing 11 along the optical axis O. Both the second lens assembly 13 and the third lens assembly 14 can move relative to the first lens assembly 12 along the optical axis O under the control of the driving assembly 16.

The housing 11 includes a base plate 111, a side plate 112, and a cover plate 113. The base plate 111, the side plate 112 and the cover plate 113 enclose a receiving space 114, and the prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are all disposed in the receiving space 114.

The substrate 111 includes a bearing surface 1111. The bearing surface 1111 is parallel to the optical axis O. The carrying surface 1111 is used to carry the side plate 112, the prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14. The substrate 111 may be a rectangular parallelepiped structure, a cube structure, a cylindrical structure, or a structure of other shapes, etc., which is not limited herein. In this embodiment, the substrate 111 has a rectangular parallelepiped structure.

A sliding rail 1112 is opened on the bearing surface 1111. The extending direction of the sliding rail 1112 is parallel to the x direction. The number of sliding rails 1112 is one or more, for example, the number of sliding rails 1112 is one, two, three, four, or even more. In this embodiment, the number of slide rails 1112 is two (the two slide rails 1112 are represented by the first slide rail 1113 and the second slide rail 1114 respectively). The extending directions of the first slide rail 1113 and the second slide rail 1114 are parallel to the x direction, and the second slide rail 1114 and the first slide rail 1113 are sequentially arranged along the y direction. In the x direction, the first distance between the end of the first slide rail 1113 close to the prism component 15 and the prism component 15 and the second distance between the end of the second slide rail 1114 close to the prism component 15 and the prism component 15 can be Same or different. The third distance between the end of the first slide rail 1113 away from the prism component 15 and the prism component 15 and the fourth distance between the end of the second slide rail 1114 away from the prism component 15 and the prism component 15 may be the same or different . For example, the difference between the first distance and the second distance may be: the first distance is greater than the second distance. Or, the first distance is smaller than the second distance. The difference between the third distance and the fourth distance may be: the third distance is greater than the fourth distance. Or, the third distance is less than the fourth distance. In this embodiment, the first distance is greater than the second distance, and the third distance is greater than the fourth distance. In this way, the movement of the second lens assembly 13 and the third lens assembly 14 is restricted by the first sliding rail 1113 and the second sliding rail 1114.

The side plate 112 is arranged around the edge of the base plate 111. The side plate 112 is perpendicular to the carrying surface 1111 of the substrate 111. The side plate 112 can be arranged on the base plate 111 by means of gluing, screwing, snapping, or the like. The side plate 112 can also be integrally formed with the base plate 111.

The side plate 112 includes a first side plate 1121 and a second side plate 1122 that are parallel to the x direction, and the first side plate 1121 and the second side plate 1122 are opposite to each other.

3 and 4, the cover plate 113 is disposed on the side plate 112. Specifically, the cover plate 113 can be installed on the upper surface 1123 of the side plate 112 by means of snapping, screwing, gluing, or the like.

The surface of the cover plate 113 opposite to the side plate 112 is provided with a light entrance 1131, and the depth direction of the light entrance 1131 can be perpendicular to the x direction, so that the camera module 100 has a periscope structure as a whole. In other embodiments, the light entrance 1131 is not a through hole, but a light-transmitting solid structure from which light can enter the receiving space 114 and enter the prism assembly 15.

6a and 6b, the prism assembly 15 is disposed on the carrying surface 1111 of the substrate 111 and is located in the receiving space 114, and the prism assembly 15 includes a mounting table 151 and a prism 152.

The mounting table 151 is disposed on the carrying surface 1111 of the substrate 111. Specifically, the mounting table 151 can be installed on the carrying surface 1111 by gluing, screwing, snapping, etc., and the mounting table 151 can also be integrally formed with the substrate 111. The mounting platform 151 is provided with a light inlet through hole 153, a light outlet through hole 154 and a receiving cavity 155. The light inlet through hole 153 and the light outlet through hole 154 connect the accommodating cavity 155 and the accommodating space 114. The light entrance through hole 153 is opposite to the light entrance 1131, and the light exit through hole 154 is opposite to the first lens assembly 12.

The prism 152 is disposed in the accommodating cavity 155, and the prism 152 can be installed on the mounting table 151 by means of gluing, clamping, or the like. The prism 152 includes an incident surface 156, a reflecting surface 157 and an emitting surface 158. The reflecting surface 157 obliquely connects the incident surface 156 and the emitting surface 158. The angle between the reflecting surface 157 and the bearing surface 1111 can be 15 degrees, 30 degrees, 45 degrees, and 60 degrees. In this embodiment, the angle between the reflective surface 157 and the bearing surface 1111 is 45 degrees. The incident surface 156 is opposite to the light through hole 153, and the exit surface 158 is opposite to the light through hole 154. The reflective surface 157 is used to reflect the light incident from the incident surface 156 so that the light is emitted from the exit surface 158. The prism 152 is used to change the exit direction of the light entering the light through hole 153. The prism 152 may be a triangular prism 152. Specifically, the cross section of the prism 152 is a right-angled triangle. The two right-angled sides of the right-angled triangle are respectively formed by the incident surface 156 and the exit surface 158, and the hypotenuse of the right-angled triangle is formed by the reflective surface 157.

Referring to FIGS. 4, 6 a and 6 b, the first lens assembly 12 includes a first housing 121 and a first lens group 122. The first lens group 122 is provided in the first housing 121.

The first housing 121 is disposed in the accommodating space 114. Specifically, the first housing 121 can be installed on the carrying surface 1111 by gluing, screwing, snapping, etc., and the first housing 121 can also be integrally formed with the substrate 111. The first housing 121 includes a light entrance hole 123, a light exit hole 124 and a receiving cavity 125. The light inlet hole 123 and the light outlet hole 124 connect the receiving cavity 125 with the receiving space 114. The light entrance hole 123 is opposite to the light exit hole 154 of the prism assembly 15, and the light exit hole 124 is opposite to the second lens assembly 13.

The first lens group 122 is located in the accommodating cavity 125, and the first lens group 122 can be installed in the first housing 121 by gluing, screwing, snapping, or the like. The first lens group 122 is opposite to the exit surface 158 of the prism 152. The first lens group 122 may have positive refractive power or negative refractive power. In this embodiment, the first lens group 122 has negative refractive power.

The first lens group 122 includes one or more first lenses 1221. For example, the first lens group 122 may include only one first lens 1221, and the first lens 1221 is a convex lens or a concave lens; or the first lens group 122 includes a plurality of first lenses 1221 (such as two, three, etc.). The first lens 1221 may be a convex lens or a concave lens, or a part of a convex lens and a part of a concave lens. In this embodiment, the first lens group 122 includes two first lenses 1221. The first lens 1221 may be a glass lens or a plastic lens.

The one or more first lenses 1221 may all be part of the revolving body, or part of the revolving body and part of the revolving body may be part of the revolving body. In this embodiment, each first lens 1221 is a part of the revolving body. For example, as shown in FIG. 7, the first lens 1221 is first formed by a mold to form a revolving lens S1. The shape of the revolving lens S1 cut by a plane perpendicular to the optical axis O is a circle, and the diameter of the circle is R, and then The edge of the revolving lens S1 is cut to form the first lens 1221. The shape of the first lens 1221 cut by the plane perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are respectively T1 and T2, T1/R∈[0.5,1), T2/R∈[0.5,1) . For example, T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc., and T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on. It can be understood that the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000, the optical parameters of the zoom lens 10 (such as the effective optical area size of the first lens 1221). Or, the lenses in the first lens group 122 are directly manufactured using a special mold, and the cavity of the mold is a part of the rotating body whose specific ratios of T1/R and T2/R have been determined, so as to directly make the first lens 1221. In this way, the first lens 1221 is a part of the revolving lens S1. Compared with the complete revolving lens S1, the first lens 1221 has a smaller volume, so that the overall volume of the zoom lens 10 is reduced, which is beneficial to the miniaturization of the electronic device 1000.

Please refer to FIGS. 4, 6 a and 6 b, the second lens assembly 13 includes a second housing 131, a second lens group 132 and a first ball 133. The second lens group 132 is installed in the second housing 131. When the second housing 131 slides, the second housing 131 drives the second lens group 132 to slide.

The second housing 131 is provided with a first light inlet 135 and a first light outlet 136 corresponding to the second lens group 132. The second housing 131 is formed with a first accommodating space 137 for accommodating the second lens group 132, and the first accommodating space 137 communicates with the accommodating space 114 through the first light inlet 135 and the first light outlet 136. The first light inlet 135 is opposite to the light outlet 124 of the first lens assembly 12, and the first light outlet 136 is opposite to the third lens assembly 14.

The second housing 131 further includes a first top surface 138 and a first bottom surface 139 opposite to each other (ie, the surface of the second housing 131 opposite to the bearing surface 1111). The first top surface 138 is opposite to the cover plate 113. The first bottom surface 139 is opposite to the carrying surface 1111 of the substrate 111. The first bottom surface 139 is provided with a first groove 1391, the first rolling ball 133 is disposed in the first groove 1391 and abuts against the bottom of the sliding rail 1112, and the first rolling ball 133 and the sliding rail 1112 are slidably connected.

Specifically, the first groove 1391 matches the shape of the first rolling ball 133. For example, the first rolling ball 133 has a spherical shape and the moving resistance is small. The first groove 1391 is a semicircular groove. The diameter of the first rolling ball 133 is It is equal to the diameter of the first groove 1391, that is, half of the first ball 133 is located in the first groove 1391. The first rolling ball 133 and the first groove 1391 are relatively tightly combined. When the first rolling ball 133 moves, the second housing 131 of the second lens assembly 13 can be driven to move. The sliding rail 1112 can be a groove formed on the bearing surface 1111 whose extending direction is parallel to the x direction, and the sliding rail 1112 can also be a protrusion provided on the bearing surface 1111 with an extending direction parallel to the x direction. The opposite surface of the bottom surface of the housing 131 is formed with a groove for mating with the first ball 133. In this embodiment, the sliding rail 1112 is a groove formed on the bearing surface 1111 with an extension direction parallel to the x direction. After the second lens assembly 13 is installed in the accommodating space 114, a part of the first ball 133 is located in the sliding rail 1112 and abuts against the bottom of the sliding rail 1112. The shape of the inner wall of the slide rail 1112 intercepted by the surface perpendicular to the x direction is a first arc, the outer contour of the first ball 133 intercepted by the surface perpendicular to the x direction is a second arc, and the curvature of the first arc It has the same curvature as the second arc. In this way, in the y direction, the outer wall of the first ball 133 and the inner wall of the slide rail 1112 are tightly combined, and the opposite sides of the outer wall of the first ball 133 are opposed by the opposite sides of the inner wall of the slide rail 1112.

The number of the first groove 1391 is one or more. For example, the number of first grooves 1391 is one, two, three, four, or even more. In this embodiment, the number of first grooves 1391 is three. The number of the first ball 133 may also be one or more. In this embodiment, the number of the first rolling balls 133 is the same as the number of the first grooves 1391, which is also three. Three first grooves 1391 are provided on the first bottom surface 139 at intervals.

The number of slide rails 1112 can be determined according to the positions of the three first grooves 1391. For example, if the connection line of the three first grooves 1391 is parallel to the optical axis O, only one slide rail 1112 needs to be provided; for another example, The three first grooves 1391 are divided into two groups (hereinafter referred to as the first group and the second group). The first group includes one first groove 1391, the second group includes two first grooves 1391, and the first group The first groove 1391 is not on the line connecting the two first grooves 1391 of the second group (that is, the three first grooves 1391 can form a triangle), and two slide rails 1112 are required to connect with the first group and the first group. The two groups correspond respectively. In this embodiment, the three first grooves 1391 are divided into a first group and a second group. The first group includes one first groove 1391, and the second group includes two first grooves 1391. The first group and the first group The slide rails 1113 correspond, and the second group corresponds to the second slide rails 1114. In this way, the first group of corresponding first balls 133 slide in the first slide rail 1113, the second group of corresponding first balls 133 slide in the second slide rail 1113, and the first group of corresponding first balls 133 and second The first ball 133 corresponding to the group is respectively restricted in the first slide rail 1113 and the second slide rail 1114, and the three first balls 133 enclose a triangle (the center of the first ball 133 located in the first slide rail 1113 is a triangle On the premise of ensuring the sliding stability, the number of the first balls 133 is minimized to reduce the sliding resistance. And because in the y direction, the opposite sides of the outer wall of the first ball 133 corresponding to the first group are interfered by the opposite sides of the inner wall of the first slide rail 1113, and the outer wall of the second group of corresponding first balls 133 is The opposite sides of the inner wall of the second slide rail 1114 interfere with the opposite sides, and the three first balls 133 form a triangle, which can prevent the second lens assembly 13 from shaking or tilting in the y direction, thereby ensuring the camera module The image quality of 100 is not affected. In addition, since the first distance is greater than the second distance, when the second lens assembly 13 slides in the x direction (that is, when it slides toward the first lens assembly 12), the first ball 133 corresponding to the first group is moved by the first slide rail 1114. The end close to the prism assembly 15 is in contact with each other to restrict the second lens assembly 13 from continuing to slide toward the first lens assembly 12, thereby limiting the movement stroke of the second lens assembly 13.

The second lens group 132 is disposed in the first accommodating space 137. Specifically, the second lens group 132 may be installed in the first accommodating space 137 by means of gluing, screwing, snapping, or the like. The second lens group 132 may have positive refractive power or negative refractive power. In this embodiment, the second lens group 132 has positive refractive power.

The second lens group 132 includes one or more second lenses 1321. The second lens group 132 may include only one second lens 1321, and the second lens 1321 is a convex lens or a concave lens; or the second lens group 132 includes multiple second lenses 1321 (such as two, three, etc.), and multiple second lenses 1321 The two lenses 1321 may both be convex lenses or concave lenses, or part of them may be convex lenses and part of them may be concave lenses. In this embodiment, the second lens group 132 includes three second lenses 1321. The second lens 1321 may be a glass lens or a plastic lens.

Referring to FIG. 7, one or more second lenses 1321 may all be part of a revolving body, or part of a revolving body, and a part of a revolving body. In this embodiment, each second lens 1321 is a part of the revolving body. For example, the second lens 1321 is first formed into a revolving lens S1 through a mold. The shape of the revolving lens S1 cut by a plane perpendicular to the optical axis O is a circle, and the diameter of the circle is R, and then the rotation of the revolving lens S1 The edge is cut to form a second lens 1321. The shape of the second lens 1321 cut by the plane perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are respectively T1 and T2, T1/R∈[0.5,1), T2/R∈[0.5,1) . For example, T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc., and T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on. It can be understood that the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000 and the optical parameters of the zoom lens 10 (such as the effective optical area size of the second lens 1321); or, the second lens 1321 They are all made directly using a special mold, and the cavity of the mold is a part of the revolving body whose specific ratios of T1/R and T2/R have been determined, so that the second lens 1321 is directly made. In this way, the second lens 1321 is a part of the revolving lens S1. Compared with the complete revolving lens S1, the second lens 1321 has a smaller volume, so that the overall volume of the zoom lens 10 is reduced, which is beneficial to the miniaturization of the electronic device 1000. It should be noted that: FIG. 7 is only used to illustrate the first lens 1221 and the second lens 1321, and is not used to indicate the size of the second lens 1321, and should not be understood as the size of the second lens 1321 and the size of the first lens 1221. the same.

Please refer to FIGS. 4, 6 a and 6 b, the third lens assembly 14 includes a third housing 141, a third lens group 142 and a third ball 143. The third lens group 142 is installed in the third housing 141. When the third housing 141 slides, the third housing 141 drives the third lens group 142 to slide.

The third housing 141 is provided with a second light inlet 145 and a second light outlet 146 corresponding to the third lens group 142. The third housing 141 is formed with a second accommodating space 147 for accommodating the third lens group 142, and the second accommodating space 147 communicates with the accommodating space 114 through the second light inlet 145 and the second light outlet 146. The second light inlet 145 is opposite to the first light outlet 136 of the second lens assembly 13, and the second light outlet 165 is opposite to the photosensitive element 50 (wherein, the photosensitive element 50 is disposed on the side plate 112 opposite to the second light outlet 165 On the inside surface).

The third housing 141 further includes a second top surface 148 and a second bottom surface 149 opposite to each other (ie, the surface of the third housing 141 opposite to the bearing surface 1111). The second top surface 148 is opposite to the cover plate 113. The second bottom surface 149 is opposite to the carrying surface 1111 of the substrate 111. The second bottom surface 149 is provided with a third groove 1491. The third ball 143 is arranged in the third groove 1491 and abuts against the bottom of the sliding rail 1112. The third ball 143 and the sliding rail 1112 are slidably connected.

Specifically, the shape of the third groove 1491 matches the shape of the third ball 143. For example, the third ball 143 is spherical and has a small moving resistance. The third groove 1491 is a semicircular groove. The diameter of the third ball 143 The diameter is equal to that of the third groove 1491, that is, half of the third ball 143 is located in the third groove 1491. The third rolling ball 143 and the third groove 1491 are relatively tightly combined. When the third rolling ball 143 moves, the third housing 141 of the third lens assembly 14 can be driven to move. After the third lens assembly 14 is installed in the receiving space 114, a part of the third ball 143 is located in the sliding rail 1112 and abuts against the bottom of the sliding rail 1112. The shape of the inner wall of the slide rail 1112 intercepted by the surface perpendicular to the x direction is a first arc, and the outer contour of the third ball 143 intercepted by the surface perpendicular to the x direction is a second arc, and the curvature of the first arc It has the same curvature as the second arc. In this way, in the y direction, the outer wall of the third ball 143 and the inner wall of the slide rail 1112 are tightly combined, and the opposite sides of the outer wall of the third ball 143 are opposed by the opposite sides of the inner wall of the slide rail 1112.

The number of the third groove 1491 is one or more. For example, the number of third grooves 1491 is one, two, three, four, or even more. In this embodiment, the number of third grooves 1491 is three. The number of the third ball 143 may also be one or more. In this embodiment, the number of third balls 143 is the same as the number of third grooves 1491, which is also three. Three third grooves 1491 are arranged on the second bottom surface 149 at intervals.

In this embodiment, the three third grooves 1491 are divided into a third group and a fourth group. The third group includes a third groove 1491, the fourth group includes two third grooves 1491, and the third group and the first group The slide rails 1113 correspond, and the fourth group corresponds to the second slide rails 1114. In this way, the third ball 143 corresponding to the third groove 1491 of the third group slides in the first slide rail 1113, and the third ball 143 corresponding to the third groove 1491 of the fourth group slides in the second slide rail 1113. The third ball 143 corresponding to the third group and the third ball 143 corresponding to the fourth group are respectively confined in the first slide rail 1113 and the second slide rail 1114. The three third balls 143 form a triangle to ensure stable sliding. Under the premise of performance, the number of third balls 143 is minimized to reduce the sliding resistance. And since in the y direction, the opposite sides of the outer wall of the third group of third balls 143 are opposed by the opposite sides of the inner wall of the first slide rail 1113, and the outer wall of the fourth group of third balls 143 is The opposite sides of the inner wall of the second slide rail 1114 are in conflict with the opposite sides of the inner wall of the second slide rail 1114, and the three third balls 143 form a triangle, which can prevent the third lens assembly 14 from shaking or tilting in the y direction, thereby ensuring the camera module The image quality of 100 is not affected. In addition, when the third lens assembly 14 slides in the opposite direction of the x direction (that is, when sliding toward the photosensitive element 50), the third ball 143 corresponding to the third group will first contact the first sliding rail 1113 near the photosensitive element 50 One end, thereby restricting the third lens assembly 14 to continue to slide in the opposite direction of the x direction, the first sliding rail 1113 can play a role in restricting the movement stroke of the third lens assembly 14. The third ball 143 corresponding to the third group is resisted by the end of the first sliding rail 1114 away from the prism assembly 15 to restrict the second lens assembly 13 from continuing to slide toward the first lens assembly 12, thereby restricting the movement of the second lens assembly 13 The role of the itinerary. And compared to the first distance being equal to the second distance and the third distance being equal to the fourth distance, when the first distance is greater than the second distance and the third distance is greater than the fourth distance, the length of the first slide rail 1113 is smaller.

The third lens group 142 is disposed in the second accommodating space 147. Specifically, the third lens group 142 can be installed in the second accommodating space 147 by means of gluing, screwing, snapping, or the like. The third lens group 142 may have positive refractive power or negative refractive power. In this embodiment, the third lens group 142 has negative refractive power.

The third lens group 142 includes one or more third lenses 1421. The third lens group 142 includes only one third lens 1421, and the third lens 1421 is a convex lens or a concave lens; or the third lens group 142 includes multiple third lenses 1421 (such as two, three, etc.), and multiple third lenses. The lens 1421 may be a convex lens or a concave lens, or a part of a convex lens and a part of a concave lens. In this embodiment, the third lens group 142 includes two third lenses 1421. The third lens 1421 may be a glass lens or a plastic lens.

Please refer to FIG. 7 again. The one or more third lenses 1421 may all be part of the revolving body, or part of the revolving body and part of the revolving body may be part of the revolving body. In this embodiment, each third lens 1421 is a part of the revolving body. For example, the third lens 1421 is first formed into a revolving lens S1 through a mold, and the shape of the revolving lens S1 cut by a plane perpendicular to the optical axis O is a circle, and the diameter of the circle is R, and then the rotation of the revolving lens S1 The edge is cut to form the third lens 1421. The shape of the third lens 1421 cut by the surface perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are T1 and T2, respectively, T1/R∈[0.5, 1), T2/R∈[0.5, 1) . For example, T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc., and T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on. It can be understood that the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000, the optical parameters of the zoom lens 10 (such as the effective optical area size of the third lens 1421); or, the third The lenses 1421 are directly manufactured using a special mold, and the cavity of the mold is a part of the revolving body whose specific ratios of T1/R and T2/R have been determined, so that the third lens 1421 is directly manufactured. In this way, the second lens 1321 is a part of the revolving lens S1. Compared with the complete revolving lens S1, the second lens 1321 has a smaller volume, so that the overall volume of the zoom lens 10 is reduced, which is beneficial to the miniaturization of the electronic device 1000. It should be noted that: FIG. 7 is only used to illustrate the first lens 1221, the second lens 1321, and the third lens 1421, and is not used to indicate the size of the third lens 1421, and should not be understood as the size and the third lens 1421 of the third lens 1421. The size of the second lens 1321 and the size of the first lens 1221 are the same.

4, 6a and 6b, the driving assembly 16 includes a first driving part 162, a second driving part 163, an anti-shake driving part 164 and a driving chip 161. The driving chip 161 includes a first control terminal 1611, a second control terminal 1612, a first anti-shake control terminal 1613, and a second anti-shake control terminal 1614. The first control terminal 1611 is connected to the second lens assembly 13 through the first driver 162 , The second control end 1612 is connected to the third lens assembly 14 through the second driving part 163, the first anti-shake control end 1613 and the second anti-shake control end 1614 are both connected to the anti-shake driving part 164, the anti-shake driving part 164 and The prism assembly 15 is connected.

The first driving member 162 includes a first coil 1621 and a first magnet 1622.

The number of the first coil 1621 is one or more. For example, the number of the first coil 1621 is one, two, three, four, or even more. In this embodiment, the number of the first coil 1621 is one. The first coil 1621 is disposed on the first side plate 1121 or the second side plate 1122. In this embodiment, the first coil 1621 is disposed on the inner surface of the first side plate 1121. The first coil 1621 can be glued or screwed. It is installed on the first side plate 1121 by means of, snap-fitting, etc. In other embodiments, there are two first coils 1621, and the two first coils 1621 are provided on the first side plate 1121 and the second side plate 1122 respectively. The first coil 1621 can be arranged at any position of the first side plate 1121. For example, the first coil 1621 can be arranged on the inner surface of the first side plate 1121 (ie, the surface located in the receiving space 114) and located on the second lens Between the group 132 and the third lens group 142; or, the first coil 1621 may be arranged on the inner surface of the first side plate 1121, and located between the first lens assembly 12 and the second lens assembly 13, etc., here is not Go into details again. In this embodiment, the first coil 1621 may be disposed on the inner surface of the first side plate 1121 and located between the second lens group 132 and the third lens group 142. In other embodiments, the first coil 1621 may be disposed on the first housing 121 and opposite to the first magnet 1622.

The first magnet 1622 is connected to the second lens group 132. Specifically, the first magnet 1622 is arranged on the second housing 131, and the first magnet 1622 can be arranged at any position of the second housing 131, for example, the first magnet 1622 is arranged On the surface of the second housing 131 opposite to the third housing 141, or, the first magnet 1622 is provided on the surface of the second housing 131 opposite to the first lens assembly 12, and so on. In this embodiment, the first magnet 1622 is provided on the surface of the second housing 131 opposite to the third housing 141. The first magnet 1622 can be installed on the second housing 131 by gluing, screwing, snapping, or the like. The first magnet 1622 may be a metal with magnetism. For example, the first magnet 1622 may be any one of iron, cobalt, and nickel, or the first magnet 1622 may be an alloy composed of at least two of iron, cobalt, and nickel. .

The second driving member 163 includes a second coil 1631 and a second magnet 1632.

There are one or more second coils 1631. For example, the number of second coils 1631 is one, two, three, four, or even more. In this embodiment, the number of second coils 1631 is one. The second coil 1631 is provided on the first side plate 1121 or the second side plate 1122. In this embodiment, the second coil 1631 is provided on the first side plate 1121. The second coil 1631 can be glued, screwed, or snapped. It is installed on the first side plate 1121 in a similar manner. In other embodiments, there are two second coils 1631, and the two second coils 1631 are provided on the first side plate 1121 and the second side plate 1122, respectively. The second coil 1631 can be arranged at any position of the side plate 112. For example, the second coil 1631 can be arranged on the inner surface of the first side plate 1121 and located between the second lens group 132 and the third lens group 142; or, The second coil 1631 may be disposed on the inner surface of the first side plate 1121 and located on the side of the third lens group 142 opposite to the second lens group 132; or, the second coil 1631 may be disposed on the side surface of the side plate 112. The opposite inner surface of the third lens group 142 (that is, the second coil 1631 is located on the side of the third lens group 142 opposite to the second lens group 132 and opposite to the second magnet 1632), etc., and will not be repeated here. . In this embodiment, the second coil 1631 is disposed on the inner surface of the first side plate 1121 and is located on the side of the third lens group 142 opposite to the second lens group 132.

The second magnet 1632 is connected to the third lens group 142. Specifically, the second magnet 1632 is arranged on the third housing, and the second magnet 1632 can be arranged at any position of the third housing 141. For example, the second magnet 1632 is arranged on the third housing 141. The surface of the third housing 141 opposite to the second housing 131, or the second magnet 1632 is provided on the surface of the third housing 141 opposite to the photosensitive element 50, and so on. In this embodiment, the second magnet 1632 is disposed on the surface of the third housing 141 opposite to the photosensitive element 50, and the second magnet 1632 can be installed on the second housing 131 by gluing, screwing, snapping, or the like. The second magnet 1632 may be a metal with magnetism. For example, the second magnet 1632 may be any one of iron, cobalt, and nickel, or the second magnet 1632 may be an alloy composed of at least two of iron, cobalt, and nickel. .

In other embodiments, the first coil 1621 is provided at any position of the second housing 131, for example, the first coil 1621 is provided on the surface of the second housing 131 opposite to the third housing 141, or the first coil 1621 is provided On the surface of the second housing 131 opposite to the first lens assembly 12 and so on. The first magnet 1622 is disposed on the first side plate 1121 or the second side plate 1122. For example, the first magnet 1622 is disposed on the first side plate 1121. Specifically, the first magnet 1622 is disposed on the inner surface of the first side plate 1121 and is located between the second lens group 132 and the third lens group 142.

The second coil 1631 is arranged at any position of the third housing 141. For example, the second coil 1631 is arranged on the surface of the third housing 141 opposite to the second housing 131, or the second coil 1631 is arranged on the surface of the third housing 141. The surface opposite to the photosensitive element 50 and so on. The second magnet 1632 is disposed on the first side plate 1121 or the second side plate 1122. For example, the second magnet 1632 is arranged on the first side plate 1121. Specifically, the second magnet 1632 is arranged on the inner surface of the first side plate 1121 and is located on the opposite side of the third lens group 142 from the second lens group 132. One side.

Referring to FIGS. 3, 4, 6a and 6b, in some embodiments, the first driving member 162 and the second driving member 163 may also be linear motors, and the stator of the first linear motor of the first driving member 162 It can be fixedly installed on the inner side of the side plate 112, the mover of the first linear motor extends from the stator and is connected to the second housing 131, and the stator of the second linear motor of the second driving member 163 is also fixedly installed on the side plate 112 On the inner surface of the second linear motor, the mover of the second linear motor extends from the stator and is connected to the third housing 141. When the mover of the first linear motor makes a linear telescopic movement, the second housing 131 can be driven to be linear along the optical axis O. When moving, when the mover of the second linear motor makes a linear telescopic movement, the third housing 141 is thereby driven to move linearly along the optical axis O. Of course, the first driving member 162 and the second driving member 163 may also have other structures, such as hydraulic structures, piezoelectric motors, etc., which will not be listed here.

Referring to FIG. 3, FIG. 4, FIG. 6a and FIG. 6b, the anti-shake driving member 164 includes a motor 1641 and a connecting frame 1642. One end of the connecting frame 1642 is connected to the motor 1641 and the other end is connected to the prism assembly 15. The connecting frame 1642 is fixedly connected to the mounting table 151 of the prism assembly 15, and the mounting table 151 conflicts with the bearing surface 1111.

The motor 1641 may be a stepper motor. The motor 1641 is used to drive the connecting frame 1642 to move in the first direction (that is, the direction parallel to the bearing surface 1111 and perpendicular to the optical axis O, or in other words, the direction parallel to the y direction of the zoom lens 10) to drive the prism assembly 15 along the first direction. Direction movement, the motor is also used to drive the connecting frame 1642 to move in the second direction (that is, the direction perpendicular to the bearing surface 1111, or the direction parallel to the z direction of the zoom lens 10) to drive the prism assembly 15 to move in the second direction , That is to say, the optical axis O, the first direction and the second direction are perpendicular to each other.

The driving chip 161 is connected to the first coil 1621, the second coil 1631 and the motor 1641. Specifically, the first control terminal 1611 is connected to the first coil 1621, the second control terminal 1612 is connected to the second coil 1631, and the first anti-shake control terminal 1613 and the second anti-shake control terminal 1614 are both connected to the motor 1641. The driving chip 161 is disposed on the substrate 111, for example, the substrate 111 itself is a circuit board, and the driving chip 161 is a part of the circuit board. Wiring can be carried out in the housing 11 to realize the connection of the driving chip 161 with the first coil 1621, the second coil 1631 and the motor 1641. The driving chip 161 is magnetically connected through the first coil 1621 and the first magnet 1622, and the second coil The magnetic connection between 1631 and the second magnet 1632 realizes the connection with the second lens assembly 13 and the third lens assembly 14.

The driver chip 161 includes multiple pins. For example, the number of pins of the driver chip 161 is greater than 13, such as 20 pins. Among the 20 pins, the first control terminal 1611, the second control terminal 1612, and the first control terminal 1612 are controlled. The number of output signal pins of the anti-shake control terminal 1613 and the second anti-shake control terminal 1614 (hereinafter referred to as control pins) is 13, that is, the effective control bit of the drive chip 161 is 13, and the number of pins in the 20 is still There are 4 pins, respectively, a first control terminal 1611, a second control terminal 1612, a first anti-shake control terminal 1613, and a second anti-shake control terminal 1614.

The driving chip 161 controls the signal output of the first control terminal 1611, the second control terminal 1612, the first anti-shake control terminal 1613, and the second anti-shake control terminal 1614 through 13 control pins. For example, the driver chip 161 can output current signals, voltage signals, etc. to the first control terminal 1611, the second control terminal 1612, the first anti-shake control terminal 1613, and the second anti-shake control terminal 1614. In the embodiment of the present application, the driver chip 161 can output current signals to the first control terminal 1611, the second control terminal 1612, the first anti-shake control terminal 1613, and the second anti-shake control terminal 1614.

In the embodiment of the present application, the movement accuracy of the zoom lens 10 needs to be less than or equal to 0.5 μm to ensure the accuracy of zooming and focusing of the zoom lens 10. For example, the movement accuracy of the zoom lens 10 is equal to 0.5 μm, which means that the drive chip 161 outputs every time For different current signals, the zoom lens 10 must move at least 0.5μm, and the drive chip 161 can output 2^13 different current signals through 13 control pins. The second lens assembly 13 and the third lens assembly 14 have the largest The stroke range is 2^13*0.5=4096 μm, that is, the distance between the starting point and the end point of the moving stroke of the second lens assembly 13 and the third lens assembly 14 can be up to 4096 μm.

Referring to Figure 5, Figure 6a and Figure 6b, when the user uses the electronic device 1000 (taking a mobile phone as an example, shown in Figure 1) to take a photo, the user can manually select the telephoto mode or the short focus mode. The telephoto mode is usually used to shoot far The viewing range is relatively small for the objects at the location, and the short focus mode (commonly known as the wide-angle mode) is usually used for shooting close objects, and the viewing range is relatively large. When the user selects the desired shooting mode, the processor of the mobile phone will issue a control instruction. After receiving the control instruction, the driving chip 161 starts to control the second lens assembly 13 and the third lens assembly 14 relative to the first lens assembly along the optical axis O. The lens assembly 12 moves to switch the zoom lens 10 between a long focus state (corresponding to a long focus mode) and a short focus state (corresponding to a short focus mode).

Specifically, the first control terminal 1611 outputs a current signal to control the current input into the first coil 1621. When the first coil 1621 is energized, the Lorentz force is generated between the first coil 1621 and the first magnet 1622. When the Lorentz force is greater than the static friction between the second lens assembly 13 and the slide rail, the first magnet 1622 is pushed by the Lorentz force to drive the second lens assembly 13 along the first slide rail 1113 and the second slide rail 1114 Move, the first control terminal 1611 can control the direction of the Lorentz force by controlling the direction of the current input into the first coil 1621, so that the second lens assembly 13 moves in the x direction or the direction opposite to the x direction, as The current signal output by the driving chip 161 changes, and the current input into the first coil 1621 changes at the same time, and the second lens assembly 13 can be in a fixed travel range (hereinafter referred to as the first travel range, for example, the first travel range is shown in FIGS. 8a and 8a and The AB section of the slide rail in Figure 8b moves within [0μm, 4096μm]). As the current in the input first coil 1621 changes, the stroke of the second lens assembly 13 also changes, where the stroke S (unit: μm) The corresponding relationship between) and current I (in milliamperes (ma)) is shown in Figure 9. The stroke corresponding to position A is 0um, and the stroke at position B is 4096um. It can be understood that when the mobile phone is used in different states, the Lorentz force required to move the second lens assembly 13 is also different, and the corresponding current required is also different, for example, when the mobile phone is in a vertical state (that is, perpendicular to the ground) , At this time, if the second lens assembly 13 moves toward the ground (that is, the opposite direction of the x direction), the Lorentz force F1 plus the gravity of the second lens assembly 13 is greater than that between the second lens assembly 13 and the slide rail. The static friction force can drive the second lens assembly 13 to move. At this time, the required Lorentz force F1 is small, as shown in the curve S1 in FIG. 9. When the stroke of the second lens assembly 13 starts to change, the corresponding current I1 is small. When the second lens assembly 13 moves away from the ground (that is, the x direction), the Lorentz force F2 is greater than the gravity of the second lens assembly 13 plus the static friction between the second lens assembly 13 and the sliding rail, The second lens assembly 13 is driven to move. At this time, the required Lorentz force F2 is relatively large, as shown in the curve S3 in FIG. 9. When the stroke of the second lens assembly 13 starts to change, the corresponding current I2 is relatively large. When the mobile phone is in a horizontal state (that is, parallel to the ground), when the second lens assembly 13 moves in the x-direction or the opposite direction to the x-direction, it is only necessary that the Lorentz force F3 is greater than the second lens assembly 13 and the sliding The static friction force between the rails is sufficient. At this time, the required Lorentz force F3 is between the Lorentz force F1 and the Lorentz force F2, as shown in the curve S2 in Fig. 9, and the stroke of the second lens assembly 13 begins to change The corresponding current I3 is located between the current I1 and the current I2. In this way, by controlling the current input into the first coil 1621 through the first control terminal 1611, the stroke of the second lens assembly 13 can be controlled.

The second control terminal 1612 outputs a current signal to control the current input into the second coil 1631. When the second coil 1631 is energized, the Lorentz force is generated between the second coil 1631 and the second magnet. When the Lorentz force is When the static friction force between the third lens assembly 14 and the slide rail is greater, the second magnet is pushed by the Lorentz force to drive the third lens assembly 14 to move along the first slide rail and the second slide rail, and the second control end 1612 The direction of the Lorentz force can be controlled by controlling the direction of the current input into the second coil 1631, so that the second lens assembly 13 moves in the x direction or the direction opposite to the x direction, following the current signal output by the driving chip 161 The current input into the second coil 1631 changes at the same time, and the third lens assembly 14 can be in a fixed travel range (hereinafter referred to as the second travel range, for example, the second travel range is the CD section of the slide rail in Figure 8a and Figure X. , Is the movement within [0μm, 4096μm]). As the current in the input second coil 1631 changes, the stroke of the third lens assembly 14 also changes. The corresponding relationship between the stroke and the current is shown in Figure X and Figure 9. The stroke corresponding to the C position is 0um, and the stroke of the D position is 4096um. It can be understood that when the mobile phone is used in different states, the Lorentz force required to move the third lens assembly 13 is also different, and the corresponding current required is also different, due to the Lorentz force required to move the third lens assembly 13 And the corresponding current changes are basically the same as the Lorentz force required to move the third lens assembly 13 and the corresponding current changes. For specific explanation, please refer to the foregoing description, which will not be repeated here. In this way, by controlling the current input into the second coil 1631 through the second control terminal 1612, the stroke of the third lens assembly 14 can be controlled.

In the long focus state and the short focus state, the second lens assembly 13 and the third lens assembly 14 respectively correspond to different strokes. For example, in the long focus state, the strokes of the second lens assembly 13 and the third lens assembly 14 are p0 and m0, respectively; in the short focus state, the strokes of the second lens assembly 13 and the third lens assembly 14 are p1 and the strokes respectively m1, where p0 and p1 are located in the first travel range, and m0 and m1 are located in the second travel range. According to the current state of the mobile phone (such as the vertical state or the horizontal state) and the moving direction of the lens assembly (such as the second lens assembly 13 and the third lens assembly 14), the mapping curve of the stroke S and the current I can be determined, for example, a mobile phone In a horizontal state, the currents I4 and I5 corresponding to p0 and p1 can be determined according to the mapping curve S2, and the currents I6 and I7 corresponding to m0 and m1 respectively. For example, the second lens assembly 13 is initially at the A position, and the third lens assembly 14 Initially at the C position, the first control terminal 1611 controls the input current of the first coil 1621 to I4, and the second control terminal 1612 controls the input current of the second coil 1631 to I6, and the second lens assembly 13 can be moved to p0. At the position, the third lens assembly 14 is moved to the m0 position, so that the zoom lens 10 is switched to the telephoto state. Similarly, the second lens assembly 13 is initially at the A position, and the third lens assembly 14 is initially at the C position. The first control terminal 1611 controls the input current to the first coil 1621 to I5, and the second control terminal 1612 controls the input second The current of the coil 1631 is I7, that is, the second lens assembly 13 is moved to the p1 position, and the third lens assembly 14 is moved to the m1 position, so that the zoom lens 10 is switched to the short focus state.

In the embodiment of the present application, when the zoom lens 10 is in the short-focus state (as shown in FIG. 6a), the first-axis distance z11 between the first lens group 122 and the second lens group 132 is greater than when the zoom lens 10 is in the long-focus state (The state shown in Figure 6b) the first on-axis distance between the first lens group 122 and the second lens group 132 is z12. When the zoom lens 10 is in the short-focus state, the second lens group 132 and the third lens group 142 are The on-axis distance z21 is greater than the second on-axis distance z21 between the second lens group 132 and the third lens group 142 when the zoom lens 10 is in the telephoto state. In other words, when the zoom lens 10 changes from the short focus state to the long focus state, the second lens group 132 moves closer to the first lens group 122 (the pitch on the first axis decreases), and the third lens group 142 moves closer to the second lens group. The lens group 132 moves, and the pitch on the second axis decreases. In other embodiments, the first on-axis distance z11 when the zoom lens 10 is in the short focus state is smaller than the first on-axis distance z12 when the zoom lens 10 is in the long focus state, and the second on-axis distance when the zoom lens 10 is in the short focus state. The on-axis spacing z21 is smaller than the second on-axis spacing z22 when the zoom lens 10 is in the telephoto state; or, the first on-axis spacing z11 when the zoom lens 10 is in the short focus state is smaller than the first when the zoom lens 10 is in the telephoto state. The on-axis spacing z12, the second on-axis spacing z21 when the zoom lens 10 is in the short focus state is greater than the second on-axis spacing z22 when the zoom lens 10 is in the long focus state, etc., the zoom lens 10 switches from the short focus state to the long focus state In the state, the change trend of the distance z1 on the first axis and the distance z2 on the second axis can be determined according to the parameters of the first lens group 122 to the third lens group 142 (such as surface parameters, aspheric coefficient parameters, etc.). This will not be listed one by one.

It can be understood that the zoom lens 10 varies the focal length according to the magnitude of the reduction of the pitch on the first axis and the pitch on the second axis. For example, as the pitch on the first axis and the pitch on the second axis gradually decrease, the zoom The focal length of the lens 10 gradually increases. For another example, as the distance on the first axis and the distance on the second axis gradually decrease, the focal length of the zoom lens 10 gradually increases, and so on. In this embodiment, as the distance on the first axis and the distance on the second axis gradually decrease, the focal length of the zoom lens 10 gradually increases. In this way, the zoom lens 10 can control the focal length to gradually change. For example, as the distance on the first axis and the distance on the second axis gradually decrease, the focal length gradually changes from 1 times the initial focal length to the initial focal length (the initial focal length is when the zoom lens 10 is at The focal length in the short-focus state) is 10 times, so that the zoom lens 10 realizes a 10 times optical zoom.

After the zoom lens 10 completes zooming, the mobile phone can obtain the image of the subject through the camera module 100, and at the same time determine whether the sharpness of the image reaches the preset sharpness in real time, and the sharpness of the image can be obtained by calculating the contrast ratio of the image. During imaging, the light sequentially passes through the light entrance 1131 of the cover plate 113 and the light entrance through hole 153 of the prism assembly 15 and is reflected by the reflective surface 157 of the prism 152 and then exits from the light exit through hole 154, and then the light passes through the first lens in turn. The light inlet 123, the first lens group 122, and the light outlet 124 of the assembly 12, the first light inlet 135 of the second lens assembly 13, the second lens group 132 and the first light outlet 136, and the third lens assembly 14 The second light inlet 145, the third lens group 142, and the second light outlet 146 finally reach the photosensitive element 50 for imaging.

When the sharpness of the image does not reach the preset sharpness, it means that the focal length at this time does not make the subject clearly imaged. At this time, focusing is required. The focusing process is to slightly adjust the focal length, which is larger than zooming. In terms of adjusting the focal length, the focusing process does not change the current state of the zoom lens 10 (such as the short focus state or the long focus state).

In the process of achieving focusing, for example, the zoom lens 10 is in a short-focus state (ie, as shown in FIG. 8a, the second lens assembly 13 is located at the position p0, and the third lens assembly 14 is located at the position m0), the second control end 1612 Control the current input to the second coil 1631 so that the third lens group starts to move with P0 as the starting position, and moves with the minimum movement accuracy (such as 0.5μm) each time. For example, the focus stroke range is [0μm, 512μm] ( The position E and position F in Fig. 8a correspond to 0μm and 512μm, respectively, and the position P0 corresponds to 256μm in the stroke range. The second control end 1612 can control the third lens assembly 14 to move along the x direction, each time it moves ( That is, move 0.5μm), that is, obtain the sharpness of the image of the subject once and determine whether the sharpness reaches the preset sharpness. If the sharpness does not reach the preset sharpness until the position E is moved, control the first The three lens assembly 14 is quickly moved to the P0 position (for example, the current input to the second coil 1631 is just enough to make the third lens assembly 14 move 256μm in the opposite direction of the x direction), and then the third lens assembly 14 is controlled in the opposite direction of the x direction Continue to move to the F position, until the sharpness of the image of the subject reaches the preset sharpness to confirm that the focusing is completed, at this time the second control end 1612 controls the third lens assembly 14 to stop moving.

In the process of achieving focusing, for example, the zoom lens 10 is in a telephoto state (ie, as shown in FIG. 8b, the second lens assembly 13 is located at the position p1, and the third lens assembly 14 is located at the position m1), the second control end 1612 The current input to the second coil 1631 is controlled so that the third lens group starts to move with P1 as the starting position, and moves with the minimum movement accuracy (such as 0.5μm) each time. For example, the focus stroke range is [0μm, 512μm] ( The G and H positions in Figure 8b correspond to 0μm and 512μm, respectively, and the m1 position corresponds to 256μm in the stroke range), the second control end 1612 can control the third lens assembly 14 to move along the x direction, every time it moves ( That is, move 0.5μm), that is, obtain the sharpness of the image of the subject once and determine whether the sharpness reaches the preset sharpness. If the sharpness does not reach the preset sharpness until the G position is moved, control the first The three lens assembly 14 quickly moves to the m1 position (for example, controlling the current input to the second coil 1631 can just make the third lens assembly 14 move 256μm in the opposite direction of the x direction), and then control the third lens assembly 14 in the opposite direction of the x direction Continue to move to the H position until the sharpness of the image of the subject reaches the preset sharpness to confirm that the focusing is completed, at this time the second control end 1612 controls the third lens assembly 14 to stop moving. In this way, the focusing of the zoom lens 10 can be accurately completed, and due to the high movement accuracy (each movement can only move 0.5 μm), the focusing accuracy is better.

In other embodiments, the zoom lens 10 can also control the current input to the first coil 1621 through the first control terminal 1611 to control the second lens assembly 13 to move relative to the first lens assembly 12 along the optical axis O, thereby realizing the zoom lens 10 focus.

When the user uses the mobile phone to shoot, because the user generally does not use a stabilizer (such as a handheld pan-tilt, etc.) to shoot, the user's hand shake may cause the zoom lens 10 to be affected by the shaking and make the captured image blurry. Generally, a gyroscope is installed to detect the jitter of the user. After obtaining the jitter data of the user, the processor can generate the corresponding movement control instruction and send it to the driving chip 161. The driving chip 161 passes through the first anti-shake control terminal 1613. The motor 1641 and the second anti-shake control end 1614 respectively control the motor 1641 to drive the connecting frame 1642 to move in the first direction to drive the prism assembly 15 to move in the first direction. The motor 1641 is also used to drive the connecting frame 1642 to move in the second direction to drive the prism assembly. 15 moves in the second direction, the first direction is perpendicular to the second direction, the first direction is parallel to the bearing surface 1111 and perpendicular to the optical axis O (that is, the first direction is parallel to the y direction of the zoom lens 10), and the second The direction is perpendicular to the bearing surface 1111 (that is, the second direction is a direction parallel to the Z direction of the zoom lens 10). In this way, by controlling the prism assembly 15 to move in the first direction and the second direction perpendicular to the optical path O, the zoom lens 10 can change the deviation of the optical path caused by the user's shaking, thereby offsetting the effect of the user's shaking on the shooting, and realizing optical protection. shake.

4 and 5, in some embodiments, the driving chip 161 further includes a third control terminal 1615, the third control terminal 1615 is used to control the third lens assembly 14 in the short focus state and the long focus state .

Specifically, the zoom lens 10 needs to focus when it completes zooming to switch between the short focus state and the long focus state. In order to achieve higher focusing accuracy, the zoom lens 10 is separately provided with a third control end 1615 to control the third lens. The movement of the assembly 14 is only 500μm due to the small focusing stroke range, and its movement accuracy is 500um/2^13, which is approximately equal to 0.061μm. Compared with the second control end 1612, the third lens assembly 14 can be zoomed and simultaneously achieved. The stroke range required for focusing is 4000μm, and the corresponding movement accuracy is 0.5μm, which can achieve higher-precision focusing.

Referring to FIGS. 5 and 10, in some embodiments, the zoom lens 10 further includes a fourth lens assembly 17 disposed in the housing 10, and the driving chip 161 also includes a third control terminal 1615, which is used for the third control terminal 1615. To control the movement of the 17 pieces of the fourth lens group relative to the first lens assembly 12 along the optical axis O.

Specifically, the zoom lens 10 can be provided with a movable fourth lens assembly 17, a first lens assembly 12, a second lens assembly 13, and a third lens assembly in order to achieve a larger range of focal length changes, such as a 50x optical zoom. 14 and the fourth lens assembly 17 are sequentially arranged along the optical axis O, and the fourth lens assembly 17 is controlled to move along the x direction or the opposite direction of the x direction through the third control end 1615, so as to achieve a larger focal length change.

Referring to FIG. 11, in some embodiments, the cover plate 113 may further include a cover plate body 1132 and a boss 1133. The boss 1133 is connected to the cover plate body 1132. The first lens assembly 12 is disposed in the boss 1133. The first lens group 122 of a lens assembly 12 is opposite to the incident surface 156 of the prism 152.

Specifically, the boss 1133 is provided with an installation space 1135, the installation space 1135 is in communication with the accommodating space 114, the first lens assembly 12 is arranged in the installation space 1135, and the first lens assembly 12 is formed with an optical axis O', an optical axis O'and a light Axis O is vertical. The first lens assembly 12 can be installed in the installation space 1135 by means of gluing, screwing, snapping, etc., and the first lens assembly 12 can also be integrally formed with the boss 1133. The end surface of the boss 1133 opposite to the prism assembly 15 is provided with a light entrance 1131, and the depth direction of the light entrance 1131 can be parallel to the optical axis O', so that the camera module 100 has a periscope structure as a whole. The light entrance 1131 is opposite to the light entrance hole 123 of the first housing 121, and the light exit hole 124 is opposite to the light entrance through hole 153 of the prism assembly 15. In this way, the length of the zoom lens 10 in a certain direction (such as the x direction) can be reduced.

4, 6a and 6b, in some embodiments, the first top surface 138 is provided with a second groove 1381, the second lens assembly 13 further includes a second ball 134, and the second ball 134 is disposed on the first top surface 138. The two grooves 1381 are inside and conflict with the cover plate 113.

Specifically, the second groove 1381 matches the shape of the second ball 134. For example, the second ball 134 has a spherical shape with a small moving resistance. The second groove 1381 is a semicircular groove. The diameter of the second ball 134 It is equal to the diameter of the second groove 1381, that is, half of the second ball 134 is located in the second groove 1381. The second rolling ball 134 and the second groove 1381 are relatively tightly combined. When the second rolling ball 134 moves, the second housing 131 of the second lens assembly 13 can be driven to move. The number of the second groove 1381 is one or more. For example, the number of second grooves 1381 is one, two, three, four, or even more. In this embodiment, the number of second grooves 1381 is three. The number of the second ball 134 may also be one or more. In this embodiment, the number of the second balls 134 is the same as the number of the second grooves 1381, which is also three. Three second grooves 1381 are provided on the first top surface 138 of the second housing 131 at intervals. The second ball 134 is arranged in the second groove 1381 and abuts against the cover plate 113, so that the second lens assembly 13 is confined between the cover plate 113 and the substrate 111, which can prevent the second lens assembly 13 from shaking or shaking in the z-direction. Tilt to ensure that the image quality is not affected.

4, 6a and 6b, in some embodiments, the surface of the cover plate 113 opposite to the first top surface 138 is formed with a slide 1134, and the second ball 134 is disposed in the second groove 1381 and Conflict with the bottom of the slide 1134.

Specifically, the slideway 1134 may be a groove formed on the surface of the cover plate 113 opposite to the first top surface 138 with an extension direction parallel to the x direction, and the slideway 1134 may also be a groove provided on the cover plate 113 and the first top surface. The protrusion on the surface opposite to the surface 138 extends in parallel to the x direction, and the surface of the protrusion opposite to the first top surface 138 of the second housing 131 is formed with a groove that cooperates with the second ball 134. In this embodiment, the slideway 1134 is a groove formed on the surface of the cover plate 113 opposite to the first top surface 138 and the extending direction is parallel to the x direction. After the second lens assembly 13 is installed in the accommodating space 114, a part of the second ball 134 is located in the slideway 1134 and conflicts with the bottom of the slideway 1134. The shape of the inner wall of the slideway 1134 intercepted by the surface perpendicular to the x direction is a third arc, the outer contour of the second ball 134 intercepted by the surface perpendicular to the x direction is a fourth arc, and the curvature of the third arc is equal to The curvature of the fourth arc is the same. In this way, in the y direction, the outer wall of the second ball 134 and the inner wall of the slide 1134 are tightly combined, and the opposite sides of the outer wall of the second ball 134 are opposed by the opposite sides of the inner wall of the slide 1134.

The number of slideways 1134 can be determined according to the positions of the three second grooves 1381. For example, if the connection line of the three second grooves 1381 is parallel to the optical axis O, only one slideway 1134 needs to be provided; for another example, The three second grooves 1381 are divided into two groups (hereinafter referred to as the fifth group and the sixth group). The fifth group includes a second groove 1381, the sixth group includes two second grooves 1381, and the fifth group The second groove 1381 is not on the line connecting the two second grooves 1381 of the sixth group (that is, the three second grooves 1381 can form a triangle), and two slideways 1134 and the fifth group and the first groove 1134 are required. The six groups correspond respectively. In this embodiment, the three second grooves 1381 are divided into a fifth group and a sixth group. The fifth group includes one second groove 1381, and the sixth group includes two second grooves 1381. The number of slides 1134 is Two (hereinafter referred to as the first chute 1157 and the second chute 1158), the fifth group corresponds to the first chute 1157, and the sixth group corresponds to the second chute 1158. In this way, the second ball 134 corresponding to the fifth group slides in the first slide 1157, the second ball 134 corresponding to the sixth group slides in the second slide 1113, and the second ball 134 and the sixth group corresponding to the fifth group slide. The second ball 134 corresponding to the group is respectively confined in the first slide 1157 and the second slide 1158, and the three second balls 134 form a triangle. On the premise of ensuring the sliding stability, minimize the amount of the second ball 134 The quantity can reduce the sliding resistance. And since in the y direction, the opposite sides of the outer wall of the second ball 134 corresponding to the fifth group are interfered by the opposite sides of the inner wall of the first slide 1157, and the outer wall of the second ball 134 corresponding to the sixth group is The opposite sides are interfered by the opposite sides of the inner wall of the second slideway 1158, and the three second balls 134 form a triangle, which can prevent the second lens assembly 13 from shaking or tilting in the y direction, thereby ensuring the camera module The image quality of 100 is not affected.

4, 6a and 6b, in some embodiments, the second top surface 148 is provided with a fourth groove 1481, the third lens assembly 14 further includes a fourth ball 144, the fourth ball 144 is disposed on the The four grooves 1481 are inside and conflict with the cover plate 113.

Specifically, the fourth groove 1481 matches the shape of the fourth ball 144. For example, the fourth ball 144 has a spherical shape with low moving resistance. The fourth groove 1481 is a semicircular groove. The diameter of the fourth ball 144 The diameter is equal to that of the fourth groove 1481, that is, half of the fourth ball 144 is located in the fourth groove 1481. The fourth rolling ball 144 and the fourth groove 1481 are relatively tightly combined. When the fourth rolling ball 144 moves, the third housing 141 of the third lens assembly 14 can be driven to move. The number of the fourth groove 1481 is one or more. For example, the number of fourth grooves 1481 is one, two, three, four, or even more. In this embodiment, the number of fourth grooves 1481 is three. The number of the fourth ball 144 may also be one or more. In this embodiment, the number of the fourth balls 144 is the same as the number of the fourth grooves 1481, which is also three. Three fourth grooves 1481 are arranged on the second top surface 148 of the third housing 141 at intervals. The fourth ball 144 is disposed in the fourth groove 1481 and abuts against the cover plate 113, so that the third lens assembly 14 is confined between the cover plate 113 and the substrate 111, which can prevent the third lens assembly 14 from shaking or shaking in the z direction. Tilt to ensure that the image quality is not affected.

4, 6a and 6b, in some embodiments, the surface of the cover plate 113 opposite to the second top surface 148 is formed with a slide 1134, and the fourth ball 144 is disposed in the fourth groove 1481 and Conflict with the bottom of the slide 1134.

After the third lens assembly 14 is installed in the accommodating space 114, a part of the fourth ball 144 is located in the slideway 1134 and conflicts with the bottom of the slideway 1134. The shape of the inner wall of the slideway 1134 intercepted by the surface perpendicular to the x direction is a third arc, the outer contour of the fourth ball 144 intercepted by the surface perpendicular to the x direction is a fourth arc, and the curvature of the third arc is equal to The curvature of the fourth arc is the same. In the y direction, the outer wall of the fourth ball 144 and the inner wall of the slide 1134 are tightly combined, and the opposite sides of the outer wall of the fourth ball 144 are opposed by the opposite sides of the inner wall of the slide 1134.

In this embodiment, the three fourth grooves 1481 are divided into a seventh group and an eighth group. The seventh group includes a fourth groove 1481, the eighth group includes two fourth grooves 1481, and the seventh group and the first group The chute 1157 corresponds, and the eighth group corresponds to the second chute 1158. In this way, the fourth ball 144 corresponding to the seventh group slides in the first slide 1157, the fourth ball 144 corresponding to the eighth group slides in the second slide 1113, and the fourth ball 144 and the eighth group corresponding to the seventh group slide. The corresponding fourth balls 144 are respectively restricted in the first slide 1157 and the second slide 1158. The three fourth balls 144 form a triangle. On the premise of ensuring the sliding stability, minimize the fourth ball 144 The quantity can reduce the sliding resistance. And since in the y direction, the opposite sides of the outer wall of the fourth ball 144 corresponding to the seventh group are interfered by the opposite sides of the inner wall of the first slide 1157, and the outer wall of the fourth ball 144 corresponding to the eighth group is The opposite sides are in conflict with the opposite sides of the inner wall of the second slideway 1158, and the three fourth balls 144 form a triangle, which can prevent the second lens assembly 13 from shaking or tilting in the y direction, thereby ensuring the camera module The image quality of 100 is not affected.

In the description of this specification, reference is made to the terms “certain embodiments”, “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”. The description means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one feature. In the description of the present application, "a plurality of" means at least two, for example two, three, unless otherwise specifically defined.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. A person of ordinary skill in the art can comment on the foregoing within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and modifications, and the scope of this application is defined by the claims and their equivalents.

Claims

A zoom lens, characterized in that the zoom lens includes:

case;

A first lens assembly, a second lens assembly and a third lens assembly arranged in the housing, the second lens assembly and the third lens assembly are all located on the optical axis of the first lens assembly; and

A driver chip, the driver chip includes a first control terminal and a second control terminal, the first control terminal is connected to the second lens assembly for controlling the second lens assembly relative to the optical axis The first lens assembly moves; the second control end is connected to the third lens assembly for controlling the third lens assembly to move relative to the first lens assembly along the optical axis; the drive chip is effective The control bit is greater than or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.
The zoom lens according to claim 1, wherein the predetermined value is a positive integer greater than or equal to 13, and when the moving stroke range of the zoom lens is constant, the predetermined value and the minimum movement The unit is negatively correlated.
The zoom lens according to claim 1, wherein the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis, and the first control end and The second control end cooperates to respectively control the movement of the second lens assembly and the third lens assembly relative to the first lens assembly, so that the zoom lens can switch between a short focus state and a long focus state The second control end is also used to control the focusing of the third lens assembly in the short focus state and the long focus state.
The zoom lens according to claim 1, wherein the zoom lens can be switched between a short focus state and a long focus state, the driving chip further comprises a third control terminal, and the third control terminal is used for The third lens assembly is controlled to move along the optical axis, so that the zoom lens realizes focusing in the short focus state and the long focus state.
The zoom lens according to claim 1, wherein the zoom lens further comprises a fourth lens assembly arranged in the housing, the driving chip further comprises a third control terminal, the third control terminal and The fourth lens assembly is connected to control the fourth lens assembly to move relative to the first lens assembly along the optical axis.
The zoom lens according to claim 1, wherein the zoom lens further comprises a first driving part and a second driving part, and the first control end passes through the first driving part and the second lens assembly Connected, the first control end is used to control the movement of the first driving member to drive the second lens assembly to move relative to the first lens assembly along the optical axis; the second control end passes through the first lens assembly The two driving parts are connected with the third lens assembly, and the second control end is used for controlling the movement of the second driving part to drive the third lens assembly to move relative to the first lens assembly along the optical axis.
The zoom lens according to claim 6, wherein the first driving member includes a first coil and a first magnet, the second driving member includes a second coil and a second magnet, and the first magnet and The second lens assembly is connected, the second magnet and the third lens assembly are connected, the first control end is connected to the first coil, and the first control end is used to control the input of the first The current of the coil drives the first magnet to drive the second lens assembly to move relative to the first lens assembly along the optical axis, the second control terminal is connected to the second coil, and the second The control terminal is used to control the current input to the second coil to drive the second magnet to drive the third lens assembly to move relative to the first lens assembly along the optical axis.
The zoom lens according to claim 1, wherein the housing comprises a substrate, a bearing surface of the substrate is provided with a sliding rail, and the second lens assembly and the third lens assembly are connected to the bearing The opposite surfaces are provided with rolling balls, and the rolling balls of the second lens assembly and the third lens assembly are slidably connected with the sliding rail, so that the second lens assembly and the third lens assembly are opposite to the The first lens assembly moves.
The zoom lens according to claim 1, wherein the zoom lens further comprises a prism assembly and an anti-shake driving member arranged in the housing, the housing includes a substrate, the prism assembly, the second A lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged on the carrying surface of the substrate along the optical axis, and the driving chip further includes a first anti-shake control end and a second anti-shake The control end, the first anti-shake control end and the second anti-shake control end are both connected to the anti-shake driving part, the anti-shake driving part is connected to the prism assembly, and the first anti-shake control The end is used to control the movement of the anti-shake drive to drive the movement of the prism assembly in the first direction, and the second anti-shake control end is used to control the movement of the anti-shake drive to drive the prism assembly in the For movement in the second direction, the optical axis, the first direction and the second direction are perpendicular to each other.
The zoom lens according to claim 9, wherein the first direction is parallel to the bearing surface and perpendicular to the optical axis, the second direction is perpendicular to the bearing surface, and the bearing surface is perpendicular to the optical axis. The optical axis is parallel.
The zoom lens according to claim 10, wherein the prism component comprises a prism, the prism comprises an incident surface, a reflection surface, and an exit surface connected in sequence, and the first lens component is connected to the incident surface or the output surface. The exit surface is opposite, and the reflective surface is used to reflect the light incident from the incident surface so that the light exits from the exit surface.
The zoom lens according to claim 1, wherein the second control end is also used to control the third lens assembly to move closer to or away from the first lens assembly along the optical axis, and to move the third lens assembly closer to or away from the first lens assembly along the optical axis. When the sharpness of the image captured by the zoom lens reaches the preset sharpness, the third lens assembly stops moving.
A camera module, characterized in that the camera module includes:

Photosensitive element; and

For a zoom lens, the photosensitive element is arranged on the image side of the zoom lens;

The zoom lens includes:

case;

A first lens assembly, a second lens assembly and a third lens assembly arranged in the housing, the second lens assembly and the third lens assembly are all located on the optical axis of the first lens assembly; and

A driver chip, the driver chip includes a first control terminal and a second control terminal, the first control terminal is connected to the second lens assembly for controlling the second lens assembly relative to the optical axis The first lens assembly moves; the second control end is connected to the third lens assembly for controlling the third lens assembly to move relative to the first lens assembly along the optical axis; the drive chip is effective The control bit is greater than or equal to a predetermined value, so that the minimum movement unit of the zoom lens meets the predetermined movement accuracy.
The camera module according to claim 13, wherein the predetermined value is a positive integer greater than or equal to 13, and when the moving stroke range of the zoom lens is fixed, the predetermined value and the minimum The moving unit is negatively correlated.
The camera module of claim 13, wherein the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis, and the first control end Cooperate with the second control end to respectively control the movement of the second lens assembly and the third lens assembly relative to the first lens assembly, so that the zoom lens can be between the short focus state and the long focus state Switching, the second control terminal is also used to control the focusing of the third lens assembly in the short focus state and the long focus state.
The camera module according to claim 13, wherein the zoom lens can be switched between a short focus state and a long focus state, and the drive chip further comprises a third control terminal, and the third control terminal is used for To control the third lens assembly to move along the optical axis, so that the zoom lens realizes focusing in the short focus state and the long focus state.
The camera module according to claim 13, wherein the zoom lens further comprises a fourth lens assembly arranged in the housing, the driving chip further comprises a third control terminal, the third control terminal It is connected with the fourth lens assembly to control the movement of the fourth lens assembly relative to the first lens assembly along the optical axis.
The camera module according to claim 13, wherein the zoom lens further comprises a first driving part and a second driving part, and the first control end passes through the first driving part and the second lens The first control end is used to control the movement of the first driving member to drive the second lens assembly to move relative to the first lens assembly along the optical axis; the second control end passes through the The second driving member is connected to the third lens assembly, and the second control end is used to control the movement of the second driving member to drive the third lens assembly to move relative to the first lens assembly along the optical axis .
18. The camera module of claim 18, wherein the first driving member includes a first coil and a first magnet, the second driving member includes a second coil and a second magnet, and the first magnet Is connected to the second lens assembly, the second magnet is connected to the third lens assembly, the first control terminal is connected to the first coil, and the first control terminal is used to control the input of the first coil. The current of a coil drives the first magnet to drive the second lens assembly to move relative to the first lens assembly along the optical axis, the second control terminal is connected to the second coil, and the first The second control terminal is used for controlling the current input to the second coil to drive the second magnet to drive the third lens assembly to move relative to the first lens assembly along the optical axis.
The camera module according to claim 13, wherein the housing comprises a substrate, a bearing surface of the substrate is provided with a sliding rail, and the second lens assembly and the third lens assembly are connected to the The opposite surfaces of the bearing surface are provided with rolling balls, and the rolling balls of the second lens assembly and the third lens assembly are slidably connected with the sliding rail, so that the second lens assembly and the third lens assembly are opposite to each other. The first lens assembly moves.
The camera module according to claim 13, wherein the zoom lens further comprises a prism assembly and an anti-shake driving member arranged in the housing, the housing includes a substrate, the prism assembly, the The first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged on the carrying surface of the substrate along the optical axis, and the driving chip further includes a first anti-shake control end and a second anti-shake control end. The anti-shake control end, the first anti-shake control end and the second anti-shake control end are both connected to the anti-shake driving part, the anti-shake driving part is connected to the prism assembly, and the first anti-shake control end The control end is used to control the movement of the anti-shake drive to drive the movement of the prism assembly in a first direction, and the second anti-shake control end is used to control the movement of the anti-shake drive to drive the prism assembly For movement in the second direction, the optical axis, the first direction, and the second direction are perpendicular to each other.
22. The camera module of claim 21, wherein the first direction is parallel to the bearing surface and perpendicular to the optical axis, the second direction is perpendicular to the bearing surface, and the bearing surface is perpendicular to the The optical axis is parallel.
The camera module of claim 22, wherein the prism component comprises a prism, the prism comprises an incident surface, a reflection surface, and an exit surface connected in sequence, and the first lens component and the incident surface or The exit surface is opposite to each other, and the reflective surface is used to reflect the light incident from the incident surface so that the light exits from the exit surface.
The camera module according to claim 13, wherein the second control end is also used to control the third lens assembly to move closer to or away from the first lens assembly along the optical axis, and to move When the sharpness of the image captured by the zoom lens reaches a preset sharpness, the third lens assembly stops moving.
An electronic device, characterized in that, the electronic device comprises:

Chassis; and

The camera module of any one of claims 13-24, the camera module being mounted on the housing.