CN110798600A

CN110798600A - Lens module, control method and electronic equipment

Info

Publication number: CN110798600A
Application number: CN201911189620.3A
Authority: CN
Inventors: 杨鑫
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-02-14
Anticipated expiration: 2039-11-28
Also published as: CN110798600B

Abstract

The application discloses a lens module, a control method and electronic equipment. The lens module comprises an optical lens and a photosensitive element, the optical lens and the photosensitive element are sequentially arranged in the direction from the object side to the image side of the lens module, and the positions of the photosensitive elements on the optical axis are relatively fixed. When the lens module is switched from the non-working state to the working state, the optical lens moves towards the object side direction of the lens module along the optical axis; when the lens module is switched from the working state to the non-working state, the optical lens moves towards the image side direction of the lens module along the optical axis. According to the lens module, the control method and the electronic equipment, the optical lens moves towards the object side direction or the image side direction of the lens module along the optical axis, the switching between the working state and the non-working state of the lens module is realized, when the lens module is in the non-working state, the total length of the lens module is small, the lens module is convenient to accommodate in the electronic equipment, and therefore the thickness of the electronic equipment can be reduced.

Description

Lens module, control method and electronic equipment

Technical Field

The present disclosure relates to the field of imaging technologies, and in particular, to a lens module, a control method, and an electronic device.

Background

As the resolution of the image sensor increases, the size of the image sensor, that is, the image height of the image, increases, and the focal length of the optical lens increases while the field angle remains unchanged, so that the total length of the corresponding lens module increases. The increase of the total length of the lens module will cause the thickness of the body of the mobile terminal to be thicker, which is not beneficial to the lightness and thinness of the mobile terminal.

Disclosure of Invention

The embodiment of the application provides an optical lens, a control method of the optical lens, a camera module and electronic equipment.

The lens module of the embodiment of the application comprises an optical lens and a photosensitive element; in the direction from the object side to the image side of the lens module, the optical lens and the photosensitive element are sequentially arranged, and the positions of the photosensitive elements on the optical axis are relatively fixed. When the lens module is switched from the non-working state to the working state, the optical lens moves towards the object side direction of the lens module along the optical axis. When the lens module is switched from the working state to the non-working state, the optical lens moves towards the image side direction of the lens module along the optical axis.

The lens module comprises an optical lens and a photosensitive element, wherein the photosensitive element is used for converting optical signals passing through the optical lens into electric signals; the position of the photosensitive element on the optical axis is relatively fixed. When the lens module is switched from a non-working state to a working state, the optical lens moves along the optical axis in a direction away from the photosensitive element; when the lens module is switched from the working state to the non-working state, the optical lens moves towards the direction close to the photosensitive element along the optical axis.

The control method of the embodiment of the application acts on a lens module, the lens module includes an optical lens and a photosensitive element, the optical lens and the photosensitive element are sequentially arranged in a direction from an object side to an image side of the lens module, and a position of the photosensitive element on an optical axis is relatively fixed. The control method comprises the following steps: when the lens module is switched from the non-working state to the working state, the optical lens is controlled to move towards the object side direction of the lens module along the optical axis. When the lens module is switched from the working state to the non-working state, the optical lens is controlled to move towards the image side direction of the lens module along the optical axis.

The control method of the embodiment of the application acts on the lens module, and the lens module comprises an optical lens and a photosensitive element. The photosensitive element is used for converting the optical signal passing through the optical lens into an electric signal; the position of the photosensitive element on the optical axis is relatively fixed. The control method comprises the following steps: when the lens module is switched from a non-working state to a working state, the optical lens is controlled to move along the optical axis towards a direction far away from the photosensitive element; when the lens module is switched from the working state to the non-working state, the optical lens is controlled to move towards the direction close to the photosensitive element along the optical axis.

The electronic equipment comprises a lens module and a shell, wherein the shell is provided with a through hole, and the lens module comprises an optical lens and a photosensitive element; in the direction from the object side to the image side of the lens module, the optical lens and the photosensitive element are sequentially arranged, and the positions of the photosensitive elements on the optical axis are relatively fixed. When the lens module is switched from the non-working state to the working state, the optical lens moves towards the object side direction of the lens module along the optical axis. When the lens module is switched from the working state to the non-working state, the optical lens moves towards the image side direction of the lens module along the optical axis. When the lens module is switched from the non-working state to the working state, the lens module penetrates through the through hole to enable part of the lens module to be exposed out of the shell.

The lens module, the control method and the electronic device in the embodiments of the present application realize the switching between the working state and the non-working state of the lens module by moving the optical lens along the optical axis towards the object side direction (towards the direction away from the photosensitive element) or the image side direction (towards the direction close to the photosensitive element) of the lens module.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic partial structural diagram of an electronic device according to some embodiments of the present application, in which a lens module of the electronic device is in an operating state.

Fig. 2 is a schematic partial structural diagram of an electronic device according to some embodiments of the present application, in which a lens module of the electronic device is in a non-operating state.

Fig. 3 is a front view and a side view of an electronic device according to some embodiments of the present application.

Fig. 4 is an assembly diagram of a lens module according to an embodiment of the present application.

Fig. 5 is an exploded view of a lens module according to some embodiments of the present disclosure.

Fig. 6 is a schematic cross-sectional view of the lens module shown in fig. 4 along the line VI-VI.

Fig. 7 is an assembly view of a lens module according to another embodiment of the present application.

FIG. 8 is a schematic view of a lens of an optical lens of some embodiments of the present application.

Fig. 9 and 10 are flow diagrams illustrating a control method according to some embodiments of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

Referring to fig. 1 and fig. 2, a lens module 100 according to the present embodiment includes an optical lens 10 and a photosensitive element 20, the optical lens 10 and the photosensitive element 20 are sequentially arranged in an object-side to image-side direction of the lens module 100, the optical lens 10 can move along an optical axis O of the lens module 100, and the position of the photosensitive element 20 on the optical axis O is relatively fixed. When the lens module 100 is switched from the non-operating state to the operating state, the optical lens 10 moves along the optical axis O toward the object side of the lens module 100; when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 moves along the optical axis O toward the image side of the lens module 100.

Referring to fig. 1, fig. 2 and fig. 3, an electronic apparatus 1000 according to an embodiment of the present disclosure includes a lens module 100 and a housing 200, the housing 200 has a through hole 210, the lens module 100 includes an optical lens 10 and a photosensitive element 20, the optical lens 10 and the photosensitive element 20 are sequentially arranged in an object-side to image-side direction of the lens module 100, a position of the photosensitive element 20 on an optical axis O is relatively fixed, and the optical lens 10 can move along the optical axis O of the lens module 100. When the lens module 100 is switched from the non-operating state to the operating state, the optical lens 10 moves along the optical axis O toward the object side of the lens module 100; when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 moves along the optical axis O toward the image side of the lens module 100. When the lens module 100 is switched from the non-operating state to the operating state, the lens module 100 passes through the through hole 210 such that a portion of the lens module 100 is exposed outside the housing 200.

Referring to fig. 1 and fig. 2 together, a lens module 100 according to an embodiment of the present disclosure includes an optical lens 10 and a light sensing element 20, where the light sensing element 20 is configured to convert an optical signal passing through the optical lens 10 into an electrical signal; the position of the photosensitive element 20 on the optical axis O is relatively fixed. When the lens module 100 is switched from the non-operating state to the operating state, the optical lens 10 moves along the optical axis O in a direction away from the light sensing element 20; when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 moves along the optical axis O in a direction approaching the light sensing element 20.

Referring to fig. 1, fig. 2 and fig. 3 together, an electronic device 1000 according to an embodiment of the present disclosure includes a lens module 100 and a housing 200, wherein the housing 200 has a through hole 210, the lens module 100 includes an optical lens 10 and a photosensitive element 20, and the photosensitive element 20 is configured to convert an optical signal passing through the optical lens 10 into an electrical signal; the position of the photosensitive element 20 on the optical axis O is relatively fixed. When the lens module 100 is switched from the non-operating state to the operating state, the optical lens 10 moves along the optical axis O in a direction away from the light sensing element 20; when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 moves along the optical axis O in a direction approaching the light sensing element 20. When the lens module 100 is switched from the non-operating state to the operating state, the lens module 100 passes through the through hole 210 such that a portion of the lens module 100 is exposed outside the housing 200.

The lens module 100 and the electronic apparatus 1000 according to the embodiment of the application realize the switching between the operating state and the non-operating state of the lens module 100 by moving the optical lens 10 along the optical axis O in the object-side direction (the direction away from the photosensitive element 20) or the image-side direction (the direction close to the photosensitive element 20) of the lens module 100, and when the lens module 100 is in the non-operating state, the total length of the lens module 100 is small, so that the lens module is convenient to be accommodated in the electronic apparatus 1000, thereby reducing the thickness of the electronic apparatus 1000.

The electronic device 1000 may be a mobile phone, a notebook computer, a smart watch, a smart helmet, a smart bracelet, etc., and please refer to fig. 3, the description of the present application takes the electronic device 1000 as a mobile phone as an example. The lens module 100 can be disposed on the front surface 301 of the mobile phone, for example, the surface where the display screen 400 is located, to serve as a front camera, or disposed on the back surface 302 of the mobile phone, for example, the surface of the mobile phone case 200 away from the display screen 400 to serve as a rear camera (as shown in fig. 3).

The working state may refer to a state that the lens module 100 is in a state of taking an image, and in the working state, a user may take a picture or photograph through the lens module 100, and at this time, a part of the lens module 100 is exposed outside the housing 200; the non-operating state may refer to a state in which the lens module 100 does not capture an image, and at this time, the lens module 100 may be completely accommodated in the chassis 200, or, of course, may be partially accommodated in the chassis 200, and another portion is still exposed outside the chassis 200, and the length of the portion exposed outside the chassis 200 is small, which does not affect the normal use of the electronic device 1000. In the present embodiment, the lens module 100 is entirely accommodated in the housing 200 in the non-operating state.

The lens module 100 is switched from the non-operating state to the operating state, and can be determined by obtaining an instruction input by a user on the electronic device 1000, for example, when the lens module 100 is in the non-operating state and is accommodated in the housing 200, and obtaining an instruction input by the user on the electronic device 1000 to use a camera for shooting, after the lens module 100 receives the shooting instruction, the photosensitive element 20 is fixed, and the optical lens 10 moves along the optical axis O in the object-side direction of the lens module 100 to increase the distance between the optical lens 10 and the photosensitive element 20, at this time, the lens module 100 partially extends out of the housing 200, so that the focus on the optical lens 10 falls on the photosensitive element 20, and the switching from the non-operating state to the operating state is completed.

The lens module 100 can be switched from the operating state to the non-operating state, or determined by obtaining an instruction input by the user on the electronic device 1000, for example, when it is obtained that the user exits the shooting interface of the electronic device 1000, which indicates that the lens module 100 has completed shooting, the optical lens 10 is moved along the optical axis O toward the image side of the lens module 100 to reduce the distance between the optical lens 10 and the light sensing element 20, and when the optical lens 10 is partially or completely accommodated in the housing 200, the switching between the operating state and the non-operating state of the lens module 100 is completed.

The optical lens 10 may include one or more lenses, and the one or more lenses are sequentially arranged on the optical axis O of the lens module 100, for example, the optical lens 10 may include four lenses, five lenses, six lenses, seven lenses, eight lenses, and so on, and in the present embodiment, the optical lens 10 includes seven lenses, and the first lens 11, the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, and the seventh lens 17 are sequentially arranged in the object-side direction to the image-side direction of the lens module 100.

Referring to fig. 1, in some embodiments, when the lens module 100 is in an operating state, the lens module 100 includes a first total lens length L1 and a first rear focal length X1, wherein the first total lens length L1 may be a distance from the first lens element (i.e., the first lens element 11) to the photosensitive element 20 in an object-side direction to an image-side direction of the lens module 100, and the first rear focal length X1 may be a distance from the last lens element (i.e., the seventh lens element 17) to the photosensitive element 20 in the object-side direction to the image-side direction of the lens module 100.

A ratio of the first back focal length X1 and the first total lens length L1 may be greater than a first preset threshold. The first preset threshold may be (0, 1) and may be any value of (0, 1), for example, the first preset threshold may be 0.01, 0.1, 0.15, 0.2, 0.21, 0.25, 0.3, 0.4, 0.5, 0.6, 0.7, 0.85, 0.95, 0.99, and so on. The smaller the first preset threshold value is, the smaller the movement amount of the optical lens 10 when the lens module 100 is switched between the working state and the non-working state, i.e. the smaller the first back focal length X1 is, the smaller the size of the photosensitive element 20 in the lens module 100 is, so that the resolution of the photosensitive element 20 is also smaller, resulting in lower image quality; the larger the first preset threshold is, the larger the movement amount of the optical lens 10 when the lens module 100 is switched between the operating state and the non-operating state is, that is, the larger the first back focal length X1 is, correspondingly, the larger the resolution of the photosensitive element 20 on the lens module 100 can be made, and the better the quality of the obtained image is, but the larger the movement amount of the optical lens 10 is, the more difficult the control in the movement process of the optical lens 10 is. In one embodiment, the first preset threshold may be in a range of [0.25, 0.4], which not only ensures the quality of the image, but also reduces the control difficulty when the lens module 100 is switched between the working state and the non-working state.

Referring to fig. 2, in some embodiments, when the lens module 100 is in the non-operating state, the lens module 100 includes a second total lens length L2 and a second rear focal length X2, wherein the second total lens length L2 may be a distance from the first lens element (i.e., the first lens element 11) to the photosensitive element 20 in an object-side direction to an image-side direction of the lens module 100, and the second rear focal length X2 may be a distance from the last lens element (i.e., the seventh lens element 17) to the photosensitive element 20 in the object-side direction to the image-side direction of the lens module 100.

Specifically, the ratio of the second back focal length X2 and the second total lens length L2 may be smaller than a second preset threshold. The second preset threshold may be (0, 1) and may be any value of (0, 1), for example, the second preset threshold may be 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.8, 0.9, 0.99, and so on. The smaller the second preset threshold is, the smaller the second back focal length X2 is, and since the lens module 100 needs to be accommodated in the housing 200 in the non-operating state, the smaller the second back focal length X2 is, the smaller the thickness of the electronic device 1000 is; however, since the second back focal length X2 is small, when the lens module 100 is switched from the non-operating state to the operating state, the distance that the optical lens 10 needs to move is longer, that is, the larger the first back focal length X1 is, and correspondingly, the larger the movement amount of the optical lens 10 is, the more difficult the control during the movement of the optical lens 10 is. The larger the second preset threshold is, the larger the second back focal length X2 is, and the thicker the thickness of the electronic device 1000 is, which is not favorable for realizing the lightness and thinness of the electronic device 1000. In one embodiment, the second threshold may be in a range of [0.04, 0.2], which not only ensures the lightness and thinness of the electronic device 1000, but also reduces the control difficulty when the lens module 100 is switched between the operating state and the non-operating state.

Referring to fig. 1 and 2 together, in some embodiments, a ratio of the total second lens length L2 to the total first lens length L1 is less than a third predetermined threshold. The third preset threshold may be (0, 1), and the third preset range may be any value of (0, 1), for example, the third preset threshold may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.85, 0.89, 0.9, 0.91, 0.99, and the like. The smaller the third preset threshold, the smaller the first back focal length X1 of the lens module 100, the smaller the size of the photosensitive element 20 in the lens module 100, so that the smaller the resolution of the photosensitive element 20, resulting in lower image quality, or the larger the second back focal length X2, the larger the thickness of the electronic device 1000; the larger the third preset threshold is, the larger the first back focal length X1 of the lens module 100 is, or the smaller the second back focal length X2 is, the greater the control difficulty is when the lens module 100 is switched between the non-operating state and the operating state. In one embodiment, the third preset threshold may be in a range of [0.7, 0.9], for example, the third preset threshold may be 0.7, 0.75, 0.8, 0.81, 0.85, 0.88, 0.89, and the like, which not only ensures the imaging quality, but also realizes the lightness and thinness of the electronic device 1000, and reduces the control difficulty when the lens module 100 switches between the operating state and the non-operating state.

In some embodiments, the lens module 100 may further include a filter 30, and the filter 30 is disposed between the optical lens 10 and the photosensitive element 20. The filter 30 may be disposed between the seventh lens element 17 and the photosensitive element 20, and the filter 30 remains stationary on the optical axis O of the lens module 100 during the switching process between the non-operating state and the operating state of the lens module 100. The filter 30 may be an IR pass filter 30, an IR cut filter 30, or the like, and different types of filters 30 may be used according to actual use. For example, when the lens module 100 uses the IR pass filter 30, only infrared light is allowed to pass through the filter 30 to the photosensitive element 20, and the lens module 100 acquires an infrared image, which can be used for iris recognition, or depth information as a structured light image for structured light distance measurement, or 3D modeling together with a visible light image, or binocular distance measurement, etc. When the lens module 100 employs the IR cut filter 30, the infrared light is not allowed to pass through the filter 30, but the visible light is allowed to pass through the filter 30 and reach the light sensing element 20, and the lens module 100 acquires a visible light image, which can be used as a general shooting requirement.

In some embodiments, the lens module 100 may further include a diaphragm 18, and the diaphragm 18 is disposed on the first lens 11, and in particular, the diaphragm 18 may be disposed in an object-side direction of the first lens 11 facing the lens module 100. The stop 18 is movable along the optical axis O together with the optical lens 10 (i.e. the first lens 11) during the switching process between the non-operating state and the operating state of the lens module 100.

Referring to fig. 2, 4, 5 and 6, the lens module 100 according to the embodiment of the present invention may further include a housing 40 and a moving component 50, the housing 40 is disposed in the chassis 200, the optical lens 10 is mounted in the moving component 50, and the light sensing element 20 of the lens module 100 may be accommodated in the housing 40, and specifically, may be fixed at the tail end of the housing 40. When the lens module 100 is in the non-operating state, the moving element 50 can be accommodated in the housing 40, but of course, the moving element 50 can also be partly accommodated in the housing 40, and another part is exposed outside the housing 40. In the present embodiment, when the lens module 100 is in the non-operating state, the moving member 50 is accommodated in the housing 40. When the lens module 100 is in the working state, a part of the moving component 50 is exposed outside the housing 40, and another part is accommodated in the housing 40.

When the lens module 100 is switched between the non-operating state and the operating state, the moving element 50 can move along the optical axis O of the lens module 100, so as to drive the optical lens 10 in the moving element 50 to move along the optical axis O of the lens module 100. Referring to fig. 2 and fig. 3, specifically, when the lens module 100 is switched from the non-operating state to the operating state, the moving element 50 moves toward the object side of the lens module 100 along the optical axis O of the lens module 100, so as to drive the optical lens 10 to move toward the object side of the lens module 100. When the lens module 100 is switched from the operating state to the non-operating state, the moving element 50 moves along the optical axis O of the lens module 100 toward the image side of the lens module 100, so as to drive the optical lens 10 to move toward the image side of the lens module 100.

The housing 40 includes a base plate 41, side plates 42, and a cover plate 43. The substrate 41, the side plate 42 and the cover plate 43 form an accommodating space 46 with a through hole 45 at one side, the through hole 45 is disposed at one side of the housing 40 corresponding to the object-side direction of the lens module 100, and the moving assembly 50 can be completely accommodated in the accommodating space 46 when the lens module 100 is in the non-operating state; when the lens module 100 is in the working state, the moving component 50 is partially received in the receiving space 46, and another portion passes through the through hole 45 of the receiving space 46 so that the portion of the moving component 50 is exposed out of the receiving space 46.

For convenience of description, the optical axis of the lens module 100 is O, a direction parallel to the optical axis O is defined as an x direction, and two directions perpendicular to the x direction are respectively defined as a y direction and a z direction, i.e., the x direction, the y direction and the z direction are mutually perpendicular.

The substrate 41 includes a carrying surface 411, and the carrying surface 411 is used for carrying the side plate 42, the moving assembly 50, the optical lens 10, the optical filter 30 and the photosensitive element 20. The substrate 41 may have a rectangular parallelepiped structure, a square structure, a cylindrical structure, or a structure with other shapes, and is not limited herein, and in the embodiment of the present application, the substrate 41 has a rectangular parallelepiped structure.

The carrying surface 411 is formed with a sliding rail 412, and an extending direction of the sliding rail 412 is parallel to the optical axis O direction of the lens module 100, i.e. parallel to the x direction. The number of slide rails 412 is one, two, three, four, or even more. In the present embodiment, the number of the slide rails 412 is two. The two slide rails 412 are the same length. The length of the slide rail 412 in the x direction is smaller than the length of the substrate 41 in the x direction, so as to limit the moving assembly 50 and prevent the moving assembly 50 from falling off from the through hole 45 to the outside of the housing 40.

The side plate 42 includes an inner side 421, an outer side 422, an upper surface 423, and a lower surface 424. The inner side 421 is opposite to the outer side 422, the inner side 421 is located in the accommodating space 46, the outer side 422 is located outside the accommodating space 46, the inner side 421 is connected to both the upper surface 423 and the lower surface 424, and the outer side 422 is also connected to both the upper surface 423 and the lower surface 424. The upper surface 423 is opposite the lower surface 424. The lower surface 424 is combined with the carrying surface 411 of the substrate 41, and the upper surface 423 is opposite to the carrying surface 411 of the substrate 41.

The side plates 42 include a first side plate 425, a second side plate 426 and a third side plate 427, the first side plate 425, the second side plate 426 and the third side plate 427 are perpendicular to the bearing surface 411 of the substrate 41, the first side plate 425 and the second side plate 426 are parallel to each other and parallel to the optical axis O of the lens module 100, two ends of the third side plate 427 are respectively connected to the first side plate 425 and the second side plate 426, the third side plate 427 is parallel to the y direction, and the photosensitive element 20 can be fixed on the surface of the third side plate 427 located in the receiving space 46. The first side plate 425, the second side plate 426, and the third side plate 427 may be provided on the base plate 41 by gluing, screwing, engaging, or the like. The side plate 42 may also be integrally formed with the base plate 41.

Referring to fig. 7, in another embodiment, the side plate 42 may further include a fourth side plate 420, the fourth side plate 420 is disposed in parallel with the third side plate 427, and the fourth side plate 420 is provided with a through hole 45.

In both the lens module 100 shown in fig. 4 and the lens module 100 shown in fig. 7, referring to fig. 5 and 6, the inner side 421 of the first side plate 425 and/or the inner side 421 of the second side plate 426 are provided with a sliding groove 428 and a mounting groove 429. For example, the inner side 421 of the first side plate 425 is provided with a sliding groove 428 and a mounting groove 429, or the inner side 421 of the second side plate 426 is provided with a sliding groove 428 and a mounting groove 429, or both the inner side 421 of the first side plate 425 and the inner side 421 of the second side plate 426 are provided with a sliding groove 428 and a mounting groove 429. In this embodiment, the inner side 421 of the first side plate 425 and the inner side 421 of the second side plate 426 are both provided with a chute 428 and a mounting groove 429. The sliding groove 428 extends in parallel with the bearing surface 411.

The sliding groove 428 is communicated with the accommodating space 46, the extending direction of the sliding groove 428 is parallel to the x direction, the groove depth of the sliding groove 428 is smaller than the thickness of the first side plate 425 and smaller than the thickness of the second side plate 426, that is, the sliding groove 428 does not penetrate through the outer side surface 422 of the first side plate 425 and does not penetrate through the outer side surface 422 of the second side plate 426. In other embodiments, the chute 428 may extend through the outer side 422 of the first side plate 425, or may extend through the outer side 422 of the second side plate 426. The number of the chutes 428 formed on the inner side 421 of the first side plate 425 and the inner side 421 of the second side plate 426 may be one or more. For example, the inner side 421 of the first side plate 425 has a sliding slot 428, and the inner side 421 of the second side plate 426 has a sliding slot 428; for another example, the inner side 421 of the first side plate 425 has two sliding slots 428, and the inner side 421 of the second side plate 426 has two sliding slots 428; for another example, the inner side 421 of the first side plate 425 has a sliding slot 428, the inner side 421 of the second side plate 426 has two sliding slots 428, and so on, which are not listed here. In this embodiment, the inner side 421 of the first side plate 425 and the inner side 421 of the second side plate 426 are both provided with a sliding groove 428 and three mounting grooves 429. The shape of the sliding groove 428 taken by a plane perpendicular to the x direction is a rectangle, a semicircle, or other shapes such as other regular shapes or irregular and irregularly shaped shapes.

The three mounting grooves 429 are communicated with the receiving space 46, one end of each mounting groove 429 penetrates through the upper surface of the side plate 42, the other end of each mounting groove 429 is connected with the corresponding sliding groove 428, and the extending direction of each mounting groove 429 can be perpendicular to or oblique to the extending direction of the corresponding sliding groove 428. For example, the extending direction of the mounting groove 429 is perpendicular to the optical axis O of the lens module 100; or the extending direction of the mounting groove 429 and the optical axis O direction of the lens module 100 form a certain inclination angle (different from 0 degree, it can be 30 degrees, 60 degrees, 75 degrees, etc.). In the present embodiment, the extending direction of the mounting groove 429 is perpendicular to the x-direction, that is, the extending direction of the mounting groove 429 is perpendicular to the extending direction of the sliding groove 428.

The cover plate 43 is disposed on the side plate 42, and specifically, the cover plate 43 may be mounted on the upper surface 423 of the side plate 42 by one or more of engaging, screwing, gluing, and the like. The cover 43 includes a cover body 431 and an abutting portion 432. The abutting portions 432 are disposed at two sides of the cover body 431, and specifically, the abutting portions 432 are disposed at two sides of the cover body 431 corresponding to the first side plate 425 and the second side plate 426 respectively. When the cover plate 43 is mounted on the side plate 42, the abutting portion 432 is located in the mounting groove 429, and the length of the abutting portion 432 in the z direction is equal to the depth of the mounting groove 429 in the z direction. The location of the abutting portion 432 in the mounting groove 429 may be: the abutting part 432 is positioned in the mounting groove 429 and occupies part of the space of the mounting groove 429; the abutting portion 432 may be located in the mounting groove 429: the abutting portion 432 is located in the mounting groove 429 and completely fills the mounting groove 429, and at this time, the abutting portion 432 is combined with the mounting groove 429 more firmly, so that the connection between the cover plate 43 and the side plate 42 is more firmly. The number of the abutting portions 432 can be the same as the number of the mounting grooves 429, so that each abutting portion 432 corresponds to one mounting groove 429.

In some embodiments, the moving assembly 50 includes a housing 51 and sliders 52 disposed on both sides of the housing 51. The housing 51 is provided with a light inlet 511 and a light outlet 512 corresponding to the optical lens 10, the housing 51 is formed with a receiving space 517 for receiving the optical lens 10, and the receiving space 517 is communicated with the receiving space 46 through the light inlet 511 and the light outlet 512.

The housing 51 includes opposing top and

bottom walls

513, 514. The top wall 513 is opposite to the cover plate 43, and the bottom wall 514 is opposite to the carrying surface 411 of the substrate 41. The moving assembly 50 further includes a ball 516, the ball 516 being disposed on the bottom wall 514. Specifically, the bottom wall 514 is provided with a groove 515, the ball 516 is arranged in the groove 515, and the ball 516 in the groove 515 of the bottom wall 514 is abutted against the bottom of the slide rail 412.

Specifically, the groove 515 matches the shape of the ball 516, for example, the ball 516 is spherical, the movement resistance is small, the groove 515 is semicircular, the radius of the ball 516 is equal to the radius of the groove 515, that is, half of the ball 516 is located in the groove 515, the combination of the ball 516 and the groove 515 is tight, and the ball 516 can move the housing 51. The sliding rail 412 may be a groove formed on the bearing surface 411 and extending in a direction parallel to the x-direction, or the sliding rail 412 may be a protrusion disposed on the bearing surface 411 and extending in a direction parallel to the x-direction, and a surface of the protrusion opposite to the bottom wall 514 of the housing 51 is formed with a groove engaged with the ball 516. In this embodiment, the sliding rail 412 is a groove formed on the carrying surface 411 and having an extending direction parallel to the x-direction. After the moving assembly 50 is installed in the receiving space 46, a portion of the ball 516 is located in the sliding rail 412 and abuts against the bottom of the sliding rail 412. Certainly, the top wall 513 may also be provided with a ball 516, and the corresponding top wall 513 may also be provided with a groove 515, at this time, the inner surface of the cover plate 43 may also form a track, and the ball 516 located in the groove 515 of the top wall 513 is abutted against the bottom of the track, where the structure of the track is similar to that of the slide rail 412, and is not described herein again. A groove 515 is formed in the top wall 513 and a ball 516 is correspondingly disposed, so that the movement resistance between the housing 51 and the top wall 513 during the movement is smaller.

The number of grooves 515 may be one or more on the bottom wall 514 or the top wall 513. For example, the number of the grooves 515 is one, two, three, four, five, six, or even more, and in the present embodiment, the number of the grooves 515 is six. The number of the balls 516 may be one or more on the bottom wall 514 or the top wall 513. For example, the number of the balls 516 is one, two, three, four, five, six or even more, and the like, and in the present embodiment, the number of the balls 516 is the same as that of the grooves 515, and is also six. Six grooves 515 are spaced apart on either the bottom wall 514 or the top wall 513.

The following description will only take the groove 515, the ball 516 and the sliding rail 412 on the bottom wall 514 as an example, and the relationship between the groove 515, the ball 516 and the rail on the top wall 513 is referred to and will not be described in detail. Specifically, on the bottom wall 514, the number of the slide rails 412 can be determined according to the positions of the six grooves 515, for example, if the connecting line of the six grooves 515 is parallel to the optical axis O of the lens module 100, only one slide rail 412 is needed; for another example, the six grooves 515 are divided into two groups (hereinafter referred to as a first group and a second group), the first group and the second group respectively include three grooves 515, and the grooves 515 of the first group are not located on the connecting line of the grooves 515 of the second group, so that two sliding rails 412 are required to respectively correspond to the first group and the second group. In this embodiment, the six grooves 515 are divided into a first group and a second group, the first group and the second group respectively include three grooves 515, the grooves 515 of the first group correspond to the first slide rail 4121, and the grooves 515 of the second group correspond to the second slide rail 4122, so that the balls 516 corresponding to the grooves 515 of the first group move (including sliding, rolling, or rolling and sliding) in the first slide rail 4121, the balls 516 corresponding to the grooves 515 of the second group move in the second slide rail 4122, and the balls 516 corresponding to the first group and the balls 516 corresponding to the second group are respectively limited in the first slide rail 4121 and the second slide rail 4122, so as to reduce the number of the balls 516 as much as possible and reduce the movement resistance on the premise of ensuring the movement stability. Moreover, since in the y direction, the two opposite sides of the outer wall of the first group of corresponding balls 516 are abutted by the two opposite sides of the inner wall of the first slide rail 4121, and the two opposite sides of the outer wall of the second group of corresponding balls 516 are abutted by the two opposite sides of the inner wall of the second slide rail 4122, the housing 51 can be prevented from shaking or inclining in the y direction, so that the imaging quality of the lens module 100 is ensured not to be affected.

The slider 52 is located on a surface of the housing 51 opposite the inner side 421 of the first side plate 425 and/or the second side plate 426. For example, the slider 52 is located on a surface of the housing 51 opposite the inner side 421 of the first side plate 425; alternatively, the slider 52 is located on the surface of the housing 51 opposite the inner side 421 of the second side plate 426; alternatively, the slider 52 is located on a surface of the housing 51 opposite the inner side surface 421 of the first side plate 425 and on a surface of the housing 51 opposite the inner side surface 421 of the second side plate 426. In the present embodiment, the slider 52 is positioned on the surface of the housing 51 facing the inner surface 421 of the first side plate 425 and on the surface of the housing 51 facing the inner surface 421 of the second side plate 426. The slide block 52 is inserted into the slide groove 428 after passing through the mounting groove 429, so that the slide block 52 is slidably disposed in the slide groove 428.

The number of slides 52 matches the number of corresponding mounting slots 429. Specifically, the number of the sliding blocks 52 on the surface of the outer shell 51 opposite to the inner side 421 of the first side plate 425 is the same as the number of the mounting grooves 429 formed on the inner side 421 of the first side plate 425, and is three, and the three sliding blocks 52 correspond to the three mounting grooves 429 one by one; the number of the sliding blocks 52 on the surface of the outer shell 51 opposite to the inner side surface 421 of the second side plate 426 is the same as the number of the mounting grooves 429 formed in the inner side surface 421 of the second side plate 426, and the three sliding blocks 52 are in one-to-one correspondence with the three mounting grooves 429. In other embodiments, the number of the sliding blocks 52 may also be less than the number of the mounting grooves 429, for example, the number of the sliding blocks 52 located on the surface of the outer shell 51 opposite to the inner side 421 of the first side plate 425 is less than the number of the mounting grooves 429 formed on the inner side 421 of the first side plate 425, and the number of the sliding blocks 52 located on the surface of the outer shell 51 opposite to the inner side 421 of the second side plate 426 is less than the number of the mounting grooves 429 formed on the inner side 421 of the second side plate 426. Moreover, the length of the sliding block 52 along the x direction is less than or equal to the length of the mounting groove 429 along the x direction, so that the sliding block 52 can be conveniently inserted into the mounting groove 429 and then slide into the sliding groove 428.

The optical lens 10 is disposed in the accommodating space 517. Specifically, each lens in the optical lens 10 may be mounted in the accommodating space 517 by one or more of gluing, screwing, or clamping.

The lens module 100 of the embodiment of the present application further includes a driving element 54, the driving element 54 is disposed in the housing 40, the driving element 54 is connected to the housing 51, and the driving element 54 is used for driving the housing 51 to move so as to drive the optical lens 10 in the housing 51 to move. The driving unit 54 includes a driving coil 541 and a driving magnet 542.

The number of the driving coils 541 is one or more, for example, the number of the driving coils 541 is one, two, three, four, or even more, and in the present embodiment, the number of the driving coils 541 is one. The driving coil 541 is provided on the first side plate 425 or the second side plate 426, in the present embodiment, the driving coil 541 is provided on the first side plate 425, and the driving coil 541 may be attached to the first side plate 425 by one or more of gluing, screwing, and engaging. In other embodiments, there are two drive coils 541, and the two drive coils 541 are disposed on the first side plate 425 and the second side plate 426, respectively. The driving coil 541 may be disposed at any position of the first side plate 425, for example, the driving coil 541 may be disposed at the inner side 421 of the first side plate 425 and between the housing 51 and the third side plate 427 (photosensitive element 20); alternatively, the driving coil 541 may be disposed on the inner side 421 of the first side plate 425 and between the through hole 45 of the casing 40 and the housing 51, and so on, which are not listed here. In the present embodiment, the driving coil 541 may be provided on the inner side surface 421 of the first side plate 425 and between the housing 51 and the third side plate 427 (photosensitive element 20).

The driving magnet 542 is connected to the housing 51, and the driving magnet 542 may be disposed at any position on the housing 51, for example, the driving magnet 542 is disposed on the surface of the housing 51 opposite to the third side plate 427; alternatively, the drive magnet 542 is provided on the surface of the housing 51 facing the through hole 45 of the case 40, or the like. In the present embodiment, the drive magnet 542 is provided on the surface of the housing 51 facing the third side plate 427. The driving magnet 542 may be attached to the housing 51 by one or a combination of gluing, screwing, and engaging.

In other forms, the positions of the drive coil 541 and the drive magnet 542 may be reversed.

When the driving coil 541 is powered on, a lorentz force is generated between the driving coil 541 and the driving magnet 542, and since the driving coil 541 is fixed on the first side plate 425 or the second side plate 426, the driving magnet 542 is pushed by the lorentz force to move the housing 51 of the moving assembly 50 along the first sliding rail 4121 and the second sliding rail 4122, so as to drive the optical lens 10 to move on the optical axis O of the lens module 100. The lens module 100 controls the housing 51 to move in the x direction by energizing the driving coil 541.

In the process of switching the lens module 100 from the non-operating state to the operating state, the driving coil 541 is controlled to be powered on, for example, the driving coil 541 is controlled to be powered on by a current in a first direction, so that the housing 51 of the moving assembly 50 drives the optical lens 10 to move toward the object side of the lens module 100, the housing 51 passes through the through hole 45 on the housing 40 to expose a part of the housing outside the housing 40, and the power supply is stopped until a ratio of the first back focal length X1 of the lens module 100 to the first total lens length L1 meets a first preset threshold, so that the lens module 100 is switched from the non-operating state to the operating state. In the process of switching the lens module 100 from the working state to the non-working state, the driving coil 541 is controlled to be powered on, for example, the driving coil 541 is controlled to be powered on by a current opposite to the first direction, so that the housing 51 of the moving assembly 50 drives the optical lens 10 to move toward the image side of the lens module 100, the housing 51 retracts into the housing 40 through the through hole 45 on the housing 40, or a part of the housing 51 retracts into the housing 40 through the through hole 45 on the housing 40, and the other part of the housing 51 is still exposed outside the housing 40 until the ratio of the second back focal length X2 to the total second lens length L2 of the lens module 100 meets a second preset threshold, and the power is stopped to switch the lens module 100 from the working state to the non-working state.

In the optical lens 10 according to the embodiment of the present application, the lenses of the one or more lenses may be all parts of a solid of revolution, or may be partly a solid of revolution and partly a part of a solid of revolution. In the present embodiment, each lens is a part of a solid of revolution. Taking the first lens 11 as an example, as shown in fig. 8, the first lens 11 is first formed into a revolved lens s1 by a mold, the shape of the revolved lens s1 cut by a plane perpendicular to the optical axis O of the lens module 100 is a circle having a diameter R, and then the edge of the revolved lens s1 is cut to form the first lens 11. The shape of the first lens 11 cut by a plane perpendicular to the optical axis O is a rectangle whose two side lengths are T1 and T2, T1/R e [0.5, 1 ], T2/R e [0.5, 1 ], respectively. For example, T1/R may be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc., and T2/R may be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, etc. It is understood that the specific ratio of T1/R and T2/R is determined by the size of the internal space of the electronic device 1000, the optical parameters of the lens module 100 (such as the size of the effective optical area of the first lens 11), and other factors. Alternatively, the first lens 11 is directly formed using a special mold, i.e., a mold cavity which is a part of a solid of revolution for which specific ratios of T1/R and T2/R have been determined, thereby directly forming the first lens 11. In this way, the first lens element 11 is a part of the revolved lens element s1, and has a smaller volume than the whole revolved lens element s1, so that the overall volume of the lens module 100 is reduced, which is advantageous for the miniaturization of the electronic device 1000. Of course, other lenses (including at least one of the second lens 12, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, and the seventh lens 17) may also be treated in the same manner. It should be noted that fig. 8 is only used for illustrating the first lens 11, and is not used for indicating the size of the first lens 11, and it should be understood that the size of each lens is the same.

Referring to fig. 2 and 9 together, the control method of the present embodiment is used to control any one of the lens modules 100, where the lens module 100 includes an optical lens 10 and a photosensitive element 20, the optical lens 10 and the photosensitive element 20 are sequentially arranged in an object-side to image-side direction of the lens module 100, the optical lens 10 can move on an optical axis O of the lens module 100, and a position of the photosensitive element 20 on the optical axis O is relatively fixed. The control method comprises the following steps:

01, acquiring the state change of the lens module 100;

02, when the lens module 100 is switched from the non-operating state to the operating state, controlling the optical lens 10 to move along the optical axis O toward the object side of the lens module 100;

03, when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 is controlled to move along the optical axis O toward the image side of the lens module 100.

The control method of the embodiment of the present application is used for controlling any one of the lens modules 100, the lens module 100 includes an optical lens 10 and a photosensitive element 20, the photosensitive element 20 is used for converting an optical signal passing through the optical lens 10 into an electrical signal; the position of the photosensitive element 20 on the optical axis O is relatively fixed. The control method comprises the following steps: acquiring the state change of the lens module 100; when the lens module 100 is switched from the non-operating state to the operating state, the optical lens 10 is controlled to move along the optical axis O in a direction away from the photosensitive element 20; when the lens module 100 is switched from the operating state to the non-operating state, the optical lens 10 is controlled to move along the optical axis O in a direction approaching the photosensitive element 20.

In the control method of the present embodiment, the optical lens 10 moves along the optical axis O in the object-side direction (the direction away from the light sensing element 20) or the image-side direction (the direction close to the light sensing element 20) of the lens module 100, so that the lens module 100 is switched between the working state and the non-working state, and when the lens module 100 is in the non-working state, the total length of the lens module 100 is small, so that the lens module is convenient to be accommodated in the electronic device 1000, and the thickness of the electronic device 1000 can be reduced.

Referring to fig. 2 and 10 together, in some embodiments, the optical lens 10 is disposed in the housing 51, the light sensing element 20 is disposed in the housing 40, and the housing 40 is provided with a through hole 45 at one side of the lens module 100 in the object-side direction (away from the light sensing element 20), and the step 02 includes:

021, when the lens module 100 is switched from the non-operating state to the operating state, the control housing 51 passes through the through hole 45 so that a part of the housing 51 is exposed outside the housing 40.

The chassis 200 of the embodiment of the present application is provided with a through hole 210 corresponding to the through hole 45 of the housing 40, and when the lens module 100 is switched between the working state and the non-working state, the housing 51 passes through the through hole 45 and the through hole 210, so that the housing 51 is accommodated in the chassis 200 or exposed outside the chassis 200. The shape of the through-hole 210 may be the same as the shape of the through-hole 45 to improve the aesthetic appearance of the electronic apparatus 1000.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. The lens module is characterized by comprising an optical lens and a photosensitive element, wherein the optical lens and the photosensitive element are sequentially arranged in the direction from an object side to an image side of the lens module, and the positions of the photosensitive elements on an optical axis are relatively fixed;

when the lens module is switched from a non-working state to a working state, the optical lens moves towards the object side direction of the lens module along the optical axis;

when the lens module is switched from the working state to the non-working state, the optical lens moves towards the image side direction of the lens module along the optical axis.

2. The lens module is characterized by comprising an optical lens and a photosensitive element, wherein the photosensitive element is used for converting an optical signal passing through the optical lens into an electric signal; the position of the photosensitive element on the optical axis is relatively fixed;

when the lens module is switched from a non-working state to a working state, the optical lens moves along the optical axis in a direction away from the photosensitive element;

when the lens module is switched from the working state to the non-working state, the optical lens moves towards the direction close to the photosensitive element along the optical axis.

3. The lens module according to claim 1 or 2, wherein when the lens module is in an operating state, the lens module comprises a first total lens length and a first back focal length, and a ratio of the first back focal length to the first total lens length is greater than a first preset threshold; when the lens module is in a non-working state, the lens module comprises a second total lens length and a second back focal length, and the ratio of the second back focal length to the second total lens length is smaller than a second preset threshold value; and the ratio of the total length of the second lens to the total length of the first lens is smaller than a third preset threshold value.

4. The lens module as claimed in claim 1 or 2, further comprising a filter disposed between the optical lens and the photosensitive element, wherein the position of the filter on the optical axis is relatively fixed.

5. The lens module according to claim 1 or 2, further comprising:

the shell comprises a base plate and a side plate arranged on the base plate, wherein a sliding groove is formed in the side plate and extends along the direction of the optical axis; and

the moving assembly is arranged in the shell and comprises a shell and sliding blocks arranged on two sides of the shell, and the optical lens is arranged in the shell; the slider is movably installed in the chute, and the shell drives the optical lens to move along the optical axis.

6. The lens module as claimed in claim 5, wherein the moving assembly further comprises a ball disposed on a bottom wall of the housing of the moving assembly opposite to the substrate; and/or

The shell further comprises a cover plate, and the moving assembly further comprises a ball arranged on a top wall of the shell of the moving assembly opposite to the cover plate.

7. The lens module as claimed in claim 5, further comprising:

the driving piece is arranged in the shell and connected with the shell, and the driving piece is used for driving the shell to move so as to drive the optical lens to move along the optical axis.

8. The lens module as claimed in claim 5, wherein a through hole is opened on a side of the housing away from the photosensitive element, and when the lens module is switched from the non-operating state to the operating state, the housing passes through the through hole so that a portion of the housing is exposed outside the housing.

9. A method for controlling a lens module, the lens module comprising an optical lens and a photosensitive element, the optical lens and the photosensitive element being sequentially arranged in a direction from an object side to an image side of the lens module, the photosensitive element being relatively fixed in position on an optical axis, the method comprising:

when the lens module is switched from a non-working state to a working state, the optical lens is controlled to move towards the object side direction of the lens module along the optical axis;

when the lens module is switched from the working state to the non-working state, the optical lens is controlled to move towards the image side direction of the lens module along the optical axis.

10. The control method of a lens die set, characterized by that, the said lens die set includes optical lens and photosensitive element, the said photosensitive element is used for changing the optical signal through the said optical lens into the electrical signal; the position of the photosensitive element on the optical axis is relatively fixed; the control method comprises the following steps:

when the lens module is switched from a non-working state to a working state, the optical lens is controlled to move along the optical axis towards a direction far away from the photosensitive element;

when the lens module is switched from the working state to the non-working state, the optical lens is controlled to move towards the direction close to the photosensitive element along the optical axis.

11. An electronic device, comprising the lens module of any one of claims 1 to 8 and a housing, wherein the housing has a through hole, and when the lens module is switched from a non-operating state to an operating state, the lens module passes through the through hole to expose a portion of the lens module outside the housing.