CN116661088A

CN116661088A - Telescopic lens and camera module with same

Info

Publication number: CN116661088A
Application number: CN202210146156.5A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2023-08-29

Abstract

The application provides a telescopic lens, which comprises an optical lens, a first lens component and a second lens component, wherein the at least two first lens components and the second lens components are sequentially arranged from an object side to an image side along an optical axis direction and can move relatively; a first driving part including a first driving element; and a second driving part including a second driving element for driving the first lens part to move along the optical axis direction of the optical lens to realize optical focusing. The first driving portion is provided for driving the second driving portion and the first lens member disposed in the second driving portion in the optical axis direction of the optical lens. The second driving part has a receiving cavity for receiving the first lens part of the optical lens, an inner diameter of which is between a maximum outer diameter of the first lens part and a maximum outer diameter of the second lens part. The structure and arrangement of the components of the telescopic lens are optimized optimally, and the imaging quality is ensured while the transverse dimension of the telescopic lens is reduced.

Description

Telescopic lens and camera module with same

Technical Field

The application relates to the technical field of camera modules, in particular to a telescopic lens and a camera module with the telescopic lens.

Background

The description herein provides background information related to the present application only and does not necessarily constitute prior art.

Currently, in the market, a camera module configured in a mobile electronic device (for example, a smart phone) needs to realize both a long focus function and a wide angle function, the development trend of the light and thin electronic device limits the size of the camera module, and the size limitation of the camera module makes the vertical camera module and the periscope camera module unable to meet the above requirements.

In addition, in order to meet the development trend of the light and thin terminal equipment, various manufacturers are devoting to research on the camera module with high imaging quality and reduced or unchanged overall height. The imaging quality of the camera module is improved, the size of the photosensitive chip is increased, along with the increasing size of the photosensitive chip, especially after the image surface size of the photosensitive chip is increased to 1 inch, the thickness of the module TTL and the camera head is increased further, so that the irreconcilable contradiction exists between the increase of the size of the chip and the height of the module.

As the size of the photosensitive chip increases, the size of the camera module increases, and the size of the camera module cannot be increased as desired due to the size limitation of the mobile electronic device. The adoption of the telescopic lens can realize that the camera module can have enough TTL to meet imaging requirements in a working state, and the height compression of the camera module is minimized in a non-working state. However, since the size of the retractable lens is large, the size of a motor that is required to drive the retractable lens to change in both the extended and retracted states is also required to be large so as to be able to provide a sufficient driving force for the retractable lens. This situation makes it difficult to reduce the lateral dimensions of the telescopic module, contrary to the need for miniaturization of the camera module.

How to use a large-size chip to improve the imaging quality of a camera module and simultaneously reduce or keep unchanged the overall height of the camera module is an urgent problem to be solved by various large manufacturers at present.

It is desirable to provide a retractable camera module that is capable of being moved telescopically relative to a photosensitive chip by a motor driving an optical lens to switch between a retracted state and an extended state. The conventional VCM motor can not meet the requirement of automatic focusing travel of the telescopic camera module; although the conventional stepping motor can meet the requirement of the stroke of the telescopic camera module, the stroke of the telescopic camera module is not accurate enough when the automatic focusing is realized due to the fact that the precision of the stepping motor is not high enough and the limitation of the stepping angle, and clear imaging cannot be realized.

Meanwhile, there is also a need to reduce the lateral dimensions of the camera module and the retractable lens, that is, in the direction transverse to the optical axis, so as to optimize the installation space requirement of the whole camera module for terminal devices such as mobile phones, and simultaneously ensure reliable working operation and high-quality imaging quality.

Therefore, there is a need to provide a novel retractable lens and an image capturing module with the retractable lens, so as to meet the above-mentioned needs.

Disclosure of Invention

The application provides a telescopic lens and an image pickup module with the telescopic lens, wherein the telescopic lens of the image pickup module can be telescopic back and forth along the optical axis direction, and the telescopic lens is beneficial to solving the contradiction between the imaging quality of the image pickup module and the height of the image pickup module.

Another advantage of the present application is to provide a retractable lens and an image pickup module with the retractable lens, in which the relative structure and positional relationship of a driving portion and lens members are reasonably arranged, the structural space of the retractable lens is optimized, and the overall size of the image pickup module is reduced.

Another advantage of the present application is to provide a retractable lens and an image pickup module with the retractable lens, in which an optimal reduction in the lateral structural size of the retractable lens is achieved while ensuring the imaging quality of the image pickup module by defining the azimuth and size relationship of the accommodation chamber for accommodating the first lens part and the lens part of the second driving section.

Another advantage of the present application is to provide a retractable lens and an image pickup module with the retractable lens, in which a second driving portion is disposed in a structural space formed by a difference in diameters of different lens components, thereby effectively achieving a reduced structural lateral dimension while facilitating driving operations of the driving components and ensuring good optical characteristics of the lens components.

Another advantage of the present application is to provide a retractable lens and an image capturing module with the retractable lens, wherein the elastic force of the elastic element provides a force for the optical lens to separate from the photosensitive chip, so as to simplify the driving structure design of the module.

Another advantage of the present application is to provide a retractable lens and an image pickup module with the retractable lens, in which a sufficient zoom stroke and a sufficient working space are provided for the image pickup module when the first driving portion drives up, and the overall height of the image pickup module is shortened when the first driving portion drives down, by driving the second driving portion and the lens member with the first driving portion, achieving miniaturization of the system structure.

Another advantage of the present application is to provide a retractable lens and an image capturing module with the retractable lens, in which the performance of the optical lens can be changed in a working state by setting the optical lens as a split type, so as to adapt to shooting in different environments and improve the imaging quality of the image capturing module.

Another advantage of the present application is to provide a retractable lens and an image pickup module with the retractable lens, in which the optical lenses are configured as separate units, so that the gap between the optical lenses can be greatly reduced in a non-operating state, so that the height of the module is minimized, and the problem that the module protrudes out of the terminal housing, thereby affecting the aesthetic appearance of the terminal is solved.

Another advantage of the present application is to provide a retractable lens and an image capturing module with the retractable lens, in which the imaging quality of the image capturing module is improved while achieving miniaturization of the overall structure by using the anti-shake manner of the chip in combination with the extension and retraction of the lens components.

Therefore, according to a first aspect of the present application, there is provided a retractable lens comprising:

an optical lens including at least two first lens components and second lens components arranged in order from an object side to an image side along an optical axis direction, wherein the first lens component is movable in the optical axis direction relative to the second lens component;

a first driving part including a first driving element; and

a second driving section including a second driving element for driving the first lens part to move in an optical axis direction of the optical lens to achieve optical focusing,

wherein a first driving portion is provided for driving a second driving portion and the first lens component arranged in the second driving portion in an optical axis direction of the optical lens,

wherein the second driving part has a receiving cavity for receiving the first lens part of the optical lens, and an inner diameter of the receiving cavity is between a maximum outer diameter of the first lens part and a maximum outer diameter of the second lens part.

According to some embodiments of the first aspect of the present application, in a projection plane perpendicular to the optical axis of the optical lens, a projection of the second driving portion in the optical axis direction of the optical lens at least partially overlaps a projection of the second lens component in the optical axis direction of the optical lens.

According to some embodiments of the first aspect of the application, a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens falls inside a projection of a maximum outer diameter of the second lens part in the optical axis direction of the optical lens.

According to some embodiments of the first aspect of the present application, a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens and a projection of a maximum outer diameter of the second lens part in the optical axis direction of the optical lens overlap each other.

According to some embodiments of the first aspect of the application, a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens falls outside a projection of a maximum outer diameter of the second lens part in the optical axis direction of the optical lens.

According to some embodiments of the first aspect of the application, the largest diameter dimension of the first lens part is smaller than the largest diameter dimension of the second lens part, the second driving element of the second lens part being arranged at the circumferential side of the first lens part.

According to some embodiments of the first aspect of the present application, the first driving part further comprises a movable sleeve, the first driving element of the first driving part being in driving connection with the movable sleeve so as to be capable of driving the movable sleeve to move in the optical axis direction of the optical lens, wherein the movable sleeve further comprises a sleeve protrusion extending in the receiving cavity of the sleeve body in the image side direction, wherein in a non-operating state of the telescopic lens the sleeve protrusion of the movable sleeve abuts against the second driving part.

According to some embodiments of the first aspect of the application, the first drive element of the first drive section further comprises a drive mechanism and a transmission mechanism in driving connection with the drive mechanism, wherein the first drive element is in driving connection with the movable sleeve via the transmission mechanism, wherein the drive mechanism of the first drive element of the first drive section comprises a drive means comprising a gear arrangement and a drive screw, the gear arrangement comprising a first gear and a second gear intermeshed with the first gear, wherein the first gear is driven by the drive means, the second gear is in driving connection with the drive screw, and the drive screw is in driving connection with the first articulation end of the movable sleeve.

According to some embodiments of the first aspect of the present application, the first driving part further comprises a guide member for guiding the movement of the movable sleeve, the guide member comprising a main guide rod inserted into the second movable connecting end of the movable sleeve and a sub guide rod inserted into the third movable connecting end of the movable sleeve, wherein the main guide rod and the sub guide rod extend parallel to the optical axis direction of the optical lens, one end of which is fixed to the fixed base of the first driving part, and the other end of which is fixed to the driving housing of the first driving part, wherein the main guide rod and the first driving element of the first driving part are located on the same side of the telescopic lens in a projection plane perpendicular to the optical axis of the optical lens, and the sub guide rod is located on the opposite side of the telescopic lens from the main guide rod based on the optical axis of the optical lens.

According to some embodiments of the first aspect of the present application, the second driving part further comprises a fixed carrier and a movable carrier movable relative to the fixed carrier along the optical axis direction of the optical lens, wherein the movable carrier has the accommodation cavity for accommodating the first lens part of the optical lens.

According to some embodiments of the first aspect of the present application, the telescopic lens further comprises at least one ejector mechanism arranged between the first lens part and the second lens part, wherein in an operational state of the telescopic lens the second driving part together with the first lens part arranged in the second driving part is caused to protrude with respect to the second lens part by the at least one ejector mechanism.

According to some embodiments of the first aspect of the present application, the first driving part and the ejector mechanism are arranged to provide driving forces in opposite directions, wherein in an operational state of the telescopic lens, the first driving part and the ejector mechanism cooperate with each other to drive the second driving part together with the first lens element arranged in the second driving part to a first position in an optical axis direction of the optical lens, wherein the second driving part is arranged to drive the first lens element arranged in the second driving part to move in the optical axis direction of the optical lens during and/or after being driven to the first position by the first driving part to achieve optical focusing.

According to some embodiments of the first aspect of the present application, in the working state and the non-working state of the telescopic lens, the bottom surface of the second driving part is always spaced from the top surface of the second lens part in the optical axis direction of the optical lens.

According to some embodiments of the first aspect of the present application, the ejector mechanism includes a first elastic member having a hollow structure inside and a support rod accommodated in the hollow structure of the first elastic member, wherein in a non-operating state of the retractable lens, the first elastic member of the at least one ejector mechanism is compressed between a first lens component and a second lens component, wherein the first elastic member is configured as a coil spring, and the support rod is inserted in the coil spring.

According to some embodiments of the first aspect of the application, the first driving part further comprises a stop mechanism comprising a first stop fixed part and a second stop movable part, wherein the first stop fixed part is arranged on the fixed base of the first driving part, and the second stop movable part is fixedly connected with the fixed carrier of the second driving part.

According to some embodiments of the first aspect of the present application, the first stopper fixing portion of the stopper mechanism has at least one first stopper that restricts movement of the second stopper movable portion of the stopper mechanism toward the object side in the optical axis direction of the optical lens, wherein the second stopper movable portion of the stopper mechanism includes a stopper movable portion main body, at least one stopper movable portion stay extending from an outer side wall of the stopper movable portion main body toward the object side in the optical axis direction of the optical lens, and a stopper movable portion through-hole provided in a middle portion of the stopper movable portion main body, wherein a size of the stopper movable portion through-hole is larger than a diameter of a bottom portion of the first lens member so that the first lens member can move in the optical axis direction of the optical lens within the stopper movable portion through-hole, wherein the stopper mechanism is provided between the movable sleeve of the first driving portion and the second driving portion in a projection plane perpendicular to the optical axis of the optical lens.

According to some embodiments of the first aspect of the present application, the second driving element of the second driving part is configured as a voice coil motor including a focusing magnet and a focusing coil provided on a movable carrier and a fixed carrier of the second driving part, respectively.

According to some embodiments of the first aspect of the present application, the second driving part further includes a magnetic attraction member having a magnetic attraction magnet and a first yoke, wherein the magnetic attraction magnet is disposed opposite to the first yoke and is disposed on the movable carrier and the fixed carrier of the second driving part, respectively, wherein the magnetic attraction magnet of the magnetic attraction member of the second driving part is disposed between the two focusing magnets, and the first yoke is disposed between the two focusing coils, as seen in a circumferential direction around an optical axis of the optical lens.

According to a second aspect of the present application, an image capturing module is provided, which includes a photosensitive assembly and a retractable lens as described above, wherein the retractable lens is disposed on a photosensitive path of the photosensitive assembly, so that light reflected by an object can be imaged on the photosensitive assembly after passing through the retractable lens.

According to some embodiments of the second aspect of the present application, the photosensitive assembly further includes a third driving portion, where the third driving portion is adapted to drive the photosensitive chip to translate, rotate or tilt, so as to implement an anti-shake function of the photosensitive chip of the camera module.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description and accompanying drawings.

Drawings

The technical scheme of the present application will be described in further detail with reference to the accompanying drawings and examples. In the drawings, like reference numerals are used to refer to like parts unless otherwise specified. Wherein:

fig. 1 is a schematic diagram of an outline structure of a camera module according to some embodiments.

FIG. 2 is an exploded view of some embodiments of a retractable lens according to the present application;

FIG. 3 is an exploded view of the second drive section shown in FIG. 2, together with a stop mechanism carrying the second drive section;

fig. 4 is a perspective view of a second drive portion in a non-operational state according to some embodiments;

fig. 5 is a perspective view of a second drive portion in an operative state according to some embodiments;

FIG. 6 is a schematic diagram of the positional relationship of the major components of the second drive element of the second drive section;

fig. 7 is a cross-sectional view of a second driving portion along the optical axis direction in a non-operating state according to some embodiments;

fig. 8 is a sectional view of a second driving portion in an operating state along the optical axis direction according to some embodiments;

Fig. 9 is a schematic cross-sectional view of a retractable lens in a direction perpendicular to an optical axis according to some embodiments.

Fig. 10 is a schematic diagram of an electronic device, to which the camera module and the retractable lens according to the present application are applied.

Detailed Description

The inventive concept will now be described in further detail with reference to specific examples. It is noted that the examples set forth herein are only for the purpose of clearly illustrating the inventive concepts of the present application and are not to be construed as limiting the application. The technical characteristics of the parts such as the telescopic lens, the camera module and the like can be combined or replaced at will within the framework of the application as long as the natural law or the technical specification is not violated, and the technical characteristics are within the scope of the application.

It is pointed out that the embodiments shown in the drawings are only for the purpose of illustrating and explaining the inventive concept in detail and image, which are not necessarily drawn to scale in terms of size and structure nor are they to be construed as limiting the inventive concept. In the drawings, the laser beam is indicated by solid lines, and the visible light beam is indicated by broken lines. Here, the solid lines and the dotted lines are only used to schematically distinguish the laser beam from the visible light beam, so as to clearly illustrate the proposed technical solution.

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the respective drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.

It should be noted that the optical axis or the optical axis direction referred to in the present invention means the center line of a light beam (light beam column), or the symmetry axis of an optical system. For the image capturing module, the photosensitive component or the optical lens, the optical axes thereof are generally coincident, which is simply referred to as an optical axis herein. The term transverse or radial direction as used herein refers generally to a direction perpendicular to the optical axis in a plane perpendicular to the optical axis, or a radial direction of a virtual circle centered on the intersection of the optical axis and this plane.

In order to meet the development trend of the light and thin terminal equipment, various manufacturers are devoted to researching the camera module with high imaging quality and reduced or unchanged overall height. The imaging quality of the camera module is improved, the size of the photosensitive chip is increased, along with the increasing size of the photosensitive chip, especially after the image surface size of the photosensitive chip is increased to 1 inch, the thickness of the module TTL and the camera head is increased further, so that the irreconcilable contradiction exists between the increase of the size of the chip and the height of the module.

How to use a large-size chip to improve the imaging quality of a camera module and simultaneously reduce or keep unchanged the overall height of the camera module is an urgent problem to be solved by various large manufacturers at present. Aiming at the problem, the invention provides a telescopic lens with a transparent cover plate, which is also called CG (Cover Glass), namely when a camera module is in a working state, the telescopic structure is utilized to extend out of CG, and an optical lens is far away from a photosensitive chip by a certain distance through an elastic element arranged at the lens end, so that the TTL requirement of imaging of a large-size chip is met, and the requirement of module shooting is completed; after shooting is completed, the CG is retracted to an initial position by utilizing the telescopic structure, and meanwhile, the distance between the photosensitive chip and the optical lens is compressed, so that the distance between the photosensitive chip and the optical lens is restored to an initial state, and the overall height of the shooting module is reduced in a non-working state. The arrangement mode can effectively solve the inherent contradiction between the imaging quality improvement of the large-size photosensitive chip and the height of the module, so that the terminal equipment provided with the camera module can be thinned, the shooting function of the terminal equipment is realized, the overall aesthetic property of the terminal equipment is improved, the requirements of the market are met, and the use satisfaction of users is improved.

Based on the above problems, by analyzing the image pickup height lowering path of the large-size chip, in the existing module design, the distances of four spaces can be correspondingly optimized, and the following steps are sequentially carried out from large to small: (1) height H1 of the lens body and compression of the lens gap; (2) the height H2 between the bottom surface of the optical lens and the photosensitive assembly; (3) CG to lens end face distance H3; (4) the height H4 of the photosensitive assembly itself. Through analysis and comparison, the current photosensitive assembly adopts a design mode of photosensitive chips and steel sheets, and the height-reducible distance is limited, so the heights of H1, H2 and H3 are mainly optimized correspondingly, and the main design thinking is as follows: the H1, H2 and H3 meet the imaging distance requirement in the working state, the distance between the H1, H2 and H3 is compressed to the minimum in the standby working state, the height of the device is reduced in the standby working state, and the development trend of thinning and thinning of terminal equipment matched with the device is met.

To this end, some embodiments of the present invention disclose a retractable lens 100 including an optical lens 20, a first driving portion 41, and a second driving portion 42. The optical lens 20 may include at least two first and second lens parts 21 and 22 sequentially arranged from an object side to an image side in an optical axis direction, wherein the first lens part 21 is movable in the optical axis direction with respect to the second lens part 22. The first driving part 41 comprises a first driving element 412 arranged to drive the second driving part 42 and/or the first lens part 21 arranged in the second driving part 42 in the optical axis direction of the optical lens 20 for achieving a preliminary optical focus. The second driving part 42 includes a second driving element 421 for driving the first lens part 21 to move in the optical axis direction of the optical lens 20 to achieve precise optical focusing.

Fig. 1 is a schematic diagram of an outline structure of an image capturing module according to some embodiments of the present invention. As shown, the camera module 2000 includes a retractable lens 100 and a photosensitive assembly 200, wherein the retractable lens 100 is disposed on a photosensitive path of the photosensitive assembly 200. When the telescopic lens is in a working state, the lens components can extend out to increase the distance between at least one lens component and other lens components, so that preliminary focusing is realized; when the retractable lens is in the non-working state, the lens component is retracted to compress the distance between at least one lens component and the other lens components, so that the height of the retractable lens in the non-working state is reduced.

In fig. 2, a structural exploded view of some embodiments of the proposed retractable lens is shown. As shown in fig. 2, the retractable lens 100 may include an optical lens 20, a pop-up mechanism 30, and a lens driving part, wherein the optical lens 20 is a split lens including at least two lens parts sequentially disposed along an optical axis, and the pop-up mechanism 30 is disposed between the at least two lens parts. When the telescopic lens is in a working state, at least one lens component extends out through the ejecting mechanism 30 so as to increase the distance between the at least one lens component and other lens components, thereby meeting the TTL (total optical length) requirement required by imaging of the large-size photosensitive chip; when the telescopic lens is in a non-working state, at least one lens component is retracted to an initial position by the lens driving part so as to compress the distance between the at least one lens component and other lens components, and the height of the telescopic lens in the non-working state is reduced.

In particular, as can be seen most intuitively from fig. 7 to 8, in some embodiments of the present application, the optical lens 20 includes a first lens part 21 and a second lens part 22 disposed in order in the optical axis direction, wherein the first lens part 21 includes a first lens barrel, and a first lens group mounted in the first lens barrel; the second lens part 22 includes a second barrel and a second lens group mounted in the second barrel. Of course, it is understood that in other embodiments of the present application, the optical lens 20 may further include a third lens component, a fourth lens component, etc., which the present application is not limited to.

In some embodiments of the present application, the first lens part 21 and the second lens part 22 have a lens gap therebetween along the optical axis direction, and the lens gap may be increased in the operating state of the telescopic lens or may be decreased in the non-operating state of the telescopic lens, so that the height of the telescopic lens, that is, the dimension of the telescopic lens along the optical axis direction, is adjusted by changing the lens gap. Of course, the number of lens gaps increases as the number of lens components increases, and the present application is not limited thereto. In some embodiments of the present application, the lens gap range is: 0.5mm-3mm.

Specifically, in some embodiments of the present application, the first lens part 21 is movable in the optical axis direction with respect to the second lens part 22. For example, in some embodiments of the present application, in the non-operating state, the first lens part 21 may be moved to the image side in the optical axis direction by the driving of the lens driving part to reduce the lens gap size between the first lens part 21 and the second lens part 22; in the operating state, the first lens part 21 can be moved to the object side in the optical axis direction by the cooperation of the eject mechanism 30 to increase the lens gap size between the first lens part 21 and the second lens part 22.

As shown in fig. 2, in some embodiments of the present application, an ejector mechanism 30 is disposed between the first lens part 21 and the second lens part 22, wherein the ejector mechanism 30 includes a first elastic member 31 and a support rod 32, and the first elastic member 31 has a hollow structure inside for accommodating the support rod 32. In the non-operating state, the lens gap between the first lens part 21 and the second lens part 22 is minimized under the action of the lens driving part, and the first elastic member 31 is in a state compressed by the first lens part 21 and the second lens part 22; in the operating state, the lens gap between the first lens part 21 and the second lens part 22 is maximized, the elastic force generated when the first elastic member 31 is compressed is released, and the first lens part 21 is driven to move in the optical axis direction with respect to the second lens part 22 by the elastic force. In the present application, the first elastic member 31 is a substance having a certain elasticity such as a spring or a leaf spring.

Specifically, in the operating state of the telescopic lens, the second drive section 42 together with the first lens part 21 arranged in the second drive section 42 is extended with respect to the second lens part 22 by the at least one ejector mechanism 30, wherein in the non-operating state of the telescopic lens the first elastic member 31 of the at least one ejector mechanism 30 is compressed between the first lens part 21 and the second lens part 22, wherein the first elastic member 31 is configured for example as a spiral spring in which the support rod 32 is inserted.

The first driving part 41 and the eject mechanism 30 may be arranged to provide driving forces in opposite directions, wherein in an operating state of the telescopic lens, the first driving part 41 and the eject mechanism 30 cooperate with each other to drive the second driving part 42 together with the first lens part 21 arranged in the second driving part 42 to a first position in the optical axis direction of the optical lens 20. The second driving portion 42 is provided to drive the first lens member 21 disposed in the second driving portion 42 to move in the optical axis direction of the optical lens 20 during being driven to the first position by the first driving portion 41 and/or after being driven to the first position by the first driving portion 41, to achieve optical focusing. In other words, the driving actions of the first driving portion 41 and the second driving portion 42 may be sequentially, simultaneously or alternately performed until precise optical focusing is finally achieved.

It should be noted that, in some embodiments of the present application, the height and shape of the support rod 32 are fixed, and the first elastic member 31 disposed on the support rod 32 is compressed or ejected to deform when the retractable lens is in the non-working state or the working state, while the height and shape of the support rod 32 do not change with the movement of the first lens component 21. This arrangement can be such that the deformation direction of the first elastic member 31 is defined in the optical axis direction by the support rod 32 to reduce errors occurring when the first elastic member 31 moves in the optical axis direction.

In some embodiments shown in fig. 2, the support rods 32 are disposed along the optical axis, i.e., parallel to the optical axis. One end of the support rod 32 is fixedly connected to the second lens part 22, for example, a second barrel of the second lens part 22, and the other end of the support rod 32 may pass through a stop mechanism 418, which will be described in detail later. Alternatively, in some embodiments of the present application, one end of the support rod 32 is fixedly connected to the second lens part 22, for example, the second lens barrel of the second lens part 22, and the other end of the support rod 32 may be movably connected to the first lens part 21, for example, the first lens barrel of the first lens part 21. The above-described structural measures can avoid the first lens member 21 from being deflected when the first lens member 21 moves in the optical axis direction.

As shown in fig. 2 and 7-8, in some embodiments of the present application, the lens driving section includes a first driving section 41 provided for driving the second driving section 42 and the first lens member 21 arranged in the second driving section 42 in the optical axis direction of the optical lens 20. The first driving part 41 may be disposed substantially at one side of the optical lens 20, and the first driving part 41 may abut against the optical lens 20 or the second driving part 42. In the non-operating state, the first driving portion 41 is driven downward in the optical axis direction, and the first lens member 21 of the optical lens 20 is driven to the image side in the optical axis direction by a portion abutting against the optical lens 20 or the second driving portion 42 to reduce a lens gap between the first lens member 21 and the second lens member 22. The first elastic member 31 of the eject mechanism 30 herein provides a force opposite to the driving force of the first driving section 41 and is compressed between the first lens part 21 and the second lens part 22. In the operating state, the first driving portion 41 moves upward in the optical axis direction and gradually reduces or even completely eliminates the pressing force, so that the first lens part 21 of the optical lens 20 moves toward the object side in the optical axis direction by the elastic force of the eject mechanism 30, increases the lens gap between the first lens part 21 and the second lens part 22, and reaches the first position. In other words, the first driving portion 41 and the eject mechanism 30 cooperate with each other to drive the second driving portion 42 together with the first lens member 21 arranged in the second driving portion 42 to the first position in the optical axis direction of the optical lens 20, wherein the second driving portion 42 is arranged to drive the first lens member 21 arranged in the second driving portion 42 to move in the optical axis direction of the optical lens 20 during and/or after being driven to the first position by the first driving portion 41 to achieve optical focusing. It should be noted that in the drawings of the present application, the direction is generally downward toward the image side, and the direction is upward toward the object side.

In some embodiments of the present application, in a cross section perpendicular to the optical axis, the second driving portion 42 is disposed radially inside the first driving portion 41 with an intersection point of the optical axis and the plane as a center, and the second driving portion 42 can drive the first lens component 21 to move continuously along the optical axis direction, so as to achieve precise focusing of the telescopic camera module.

The preliminary focusing in the present application means that the second driving portion 42 moves to the first position in the optical axis direction together with the first lens member 21 under the driving of the first driving portion 41 so that the photosensitive assembly 200 can image or the optical lens 20 is ready for imaging. In this case, the driving object of the first driving portion 41 includes the second driving portion 42 and the optical lens 20, and particularly the first lens member 21 of the optical lens 20 supported in the second driving portion 42. The fine focus means that the distance from the first lens part 21 to the photosensitive assembly 200 is adjusted according to the change of the focal point by the driving of the second driving part 42, and the first lens part 21 is moved to the second position in the optical axis direction so that the subject remains clearly imaged. In this case, the second driving portion 42 drives the optical lens 20, particularly the first lens part 21 of the optical lens 20. The above description is also applicable to the case of having a plurality of lens components, and the plurality of lens components may be divided into two groups as needed, corresponding to the aforementioned first lens component 21 and second lens component 22, respectively.

Referring to fig. 7-8, in some embodiments of the application, the size of the first lens part 21 is smaller than the size of the second lens part 22, also the largest diameter size of the first lens part 21 is said to be smaller than the largest diameter size of the second lens part 22. For example, in some embodiments of the present application, the maximum diameter size of the first lens component 21 is: 9.0mm-11.0mm, the maximum diameter size of the second lens part 22 is 16.5mm-18.5mm.

In some embodiments of the present application, the maximum diameter size of the first lens component 21 is: 10.2mm; the maximum diameter size of the second lens component 22 is: 17.5mm. In the present application, the first lens part 21 is a mover, i.e. movable by the driving part, and the second lens part 22 is a stator, i.e. fixed with respect to the motor base, for example. The second driving portion 42 is provided on the outer peripheral side of the first lens member 21 to drive the first lens member 21 to move in the optical axis direction with respect to the second lens member 22, achieving precision focusing.

It can be understood that, because the size difference between the first lens component 21 and the second lens component 22 is larger in the present application, the arrangement of the second driving portion 42 on the outer peripheral side of the first lens component 21 can reduce the occupation of the second driving portion 42 on the lateral space of the telescopic lens, thereby reducing the lateral size of the telescopic lens. Further, in some embodiments of the present application, the full-caliber size of the light incident end of the first lens component 21 is smaller than the maximum diameter of the first lens component 21, and the second driving portion 42 is disposed on the side of the first lens component 21 close to the light incident end, that is, the second driving portion 42 is disposed on the middle upper side of the first lens component 21, so as to further reduce the occupation of the second driving portion 42 on the transverse space of the telescopic lens, and further reduce the transverse size of the telescopic lens. In some embodiments of the present application, the full aperture size of the first lens component 21 is: 6mm-8mm. In some embodiments of the application, the full aperture size of the first lens part 21 is 7.4mm.

Further, in some embodiments of the present application, the second driving portion 42 and the first lens component 21 are disposed above the second lens component 22. That is, the bottom surface of the second driving portion 42 is higher than the top surface of the second lens member 22, regardless of the operating state or the non-operating state. In other words, the bottom surface of the second driving portion 42 is always spaced from the top surface of the second lens part 22 in the optical axis direction of the optical lens 20 in the operating state and the non-operating state of the telescopic lens.

In some embodiments of the present application, the second driving part 42 has a receiving cavity for receiving the first lens part 21 of the optical lens 20, whereby the first lens part 21 may be supported in the second driving part 42 and move together with the second driving part 42 under the combined action of the first driving part 41 and the eject mechanism 30.

In some embodiments of the application, the inner diameter of the accommodation cavity is between the maximum outer diameter of the first lens part 21 and the maximum outer diameter of the second lens part 22, thereby ensuring that the structural space of the telescopic lens transverse to the optical axis can be fully utilized, in particular, other parts and the like can be optimally arranged, and the structure and arrangement manner of the parts of the telescopic lens can be optimally optimized, thereby ensuring the compact structure of the telescopic lens while ensuring the imaging quality.

The value of the inner diameter of the accommodation chamber of the second driving part 42 for accommodating the first lens part 21 of the optical lens 20 is defined between the maximum outer diameter of the first lens part 21 and the maximum outer diameter of the second lens part 22, thereby ensuring that the second driving part 42 can be optimally arranged in the structural space formed by the diameter differences of the different lens parts, not only effectively achieving a reduced structural lateral dimension, but also facilitating the driving operation of the driving parts and ensuring good optical characteristics of the lens parts.

In some embodiments of the present application, in a projection plane perpendicular to the optical axis of the optical lens 20, the projection of the second driving portion 42 in the optical axis direction and the projection of the second lens part 22 in the optical axis direction may overlap at least partially. This is because, as the size of the photosensitive chip 62 increases gradually, especially when the image plane size of the photosensitive chip 62 is greater than 0.78 inches, the lateral size, the size perpendicular to the optical axis direction, and the longitudinal size, or the size along the optical axis direction of the optical lens 20 need to increase, and the requirements for increasing the lateral size and the longitudinal size of the optical lens 20 cannot be satisfied due to the limited height space and lateral space of the image capturing module. Therefore, in the present application, the expansion and contraction of the first lens member 21 is achieved by the first driving portion 41 cooperating with the eject mechanism 30 to reduce the height of the telescopic camera module in the non-operating state. The second driving portion 42 is provided on the outer peripheral side of the first lens member 21 having a smaller maximum diameter size to reduce the lateral size of the telescopic camera module.

In some embodiments of the present application, in a projection plane perpendicular to the optical axis of the optical lens 20, the projection of the outermost side of the second driving portion 42 in the optical axis direction may also fall within the projection of the maximum outer diameter of the second lens element 22 in the optical axis direction, or fall inside the projection of the outermost side of the second lens element 22 in the optical axis direction of the optical lens 20, that is, the outermost side of the second driving portion 42 is closer to the optical axis than the second lens element 22, that is, the size of the second driving portion 42 in the radial direction perpendicular to the optical axis is smaller than the second lens element 22.

In another specific example of the present application, in the projection plane perpendicular to the optical axis direction, the projection of the outermost side of the second driving portion 42 in the optical axis direction may also coincide with the projection of the maximum outer diameter of the second lens member 22 in the optical axis direction, or with the projection of the outermost side of the second lens member 22 in the optical axis direction of the optical lens 20, that is, the distance between the outermost side of the second driving portion 42 and the outermost side of the second lens member 22 reaching the optical axis is the same, or the size of the second driving portion 42 in the radial direction perpendicular to the optical axis is substantially equal to the second lens member 22.

In another specific example of the present application, in the projection plane perpendicular to the optical axis direction, the projection of the outermost side of the second driving portion 42 in the optical axis direction may also fall outside the projection of the maximum outer diameter of the second lens member 22 in the optical axis direction, or fall outside the projection of the outermost side of the second lens member 22 in the optical axis direction of the optical lens 20, that is, the outermost side of the second lens member 22 is closer to the optical axis than the second lens member 22, or the size of the second driving portion 42 in the radial direction perpendicular to the optical axis is larger than the second lens member 22. In this case, one end of the support rod 32 may be fixed directly to the fixed base 417 of the first driving portion 41 instead of being fixed to the second barrel to which the second lens part 22 is connected.

In another specific example of the present application, the lateral dimension of the second driving portion 42 is smaller than the lateral dimension of the second lens component 22, and this arrangement makes full use of the outer peripheral side space of the first lens component 21, so that not only the lateral dimension of the retractable lens can be reduced, but also the lateral dimension of the retractable camera module can be reduced, and the structure of the retractable lens can be made more compact.

The telescopic camera module provided by the application can be applied as a long-focus camera module, when automatic focusing is carried out, the conventional VCM motor cannot meet the requirement of the automatic focusing stroke of the telescopic camera module, and the conventional stepping motor can meet the requirement of the stroke of the telescopic camera module, but the precision is not high enough due to the limitation of relatively large stepping angle, so that the moving stroke of the telescopic camera module is not accurate enough when the automatic focusing is realized only by the stepping motor, and clear imaging cannot be realized. Therefore, in the application, two driving parts are arranged, wherein the first driving part 41 can generate a larger driving stroke, so that the stroke requirement of automatic focusing of the telescopic camera module is met; the second driving portion 42 has higher accuracy, and can provide a more accurate driving stroke, so that the subject can be clearly imaged on the photosensitive member. The first driving element 412 of the first driving part 41 may be a motor with a relatively large driving stroke, such as a piezoelectric motor or a stepping motor, and the second driving element 421 of the second driving part 42 may be a motor with relatively high precision, such as a VCM motor or a memory alloy motor, which is not limited in the present application. The present application is described by taking a stepping motor and a VCM as examples.

As shown in fig. 2, in some embodiments of the present application, the first driving portion 41 includes a driving housing 411, a first driving element 412, a movable sleeve 413, and a fixed base 417, where the driving housing 411 is sleeved on the fixed base 417, and the driving housing 411 and the fixed base 417 form an accommodating space, and the first driving element 412, the movable sleeve 413, and other elements are accommodated therein. Further, a first driving member 412 is provided on the fixed base 417 and is capable of driving the movable sleeve 413 to move in the accommodation space in the optical axis direction.

Specifically, in some embodiments of the present application, the fixing base 417 of the first driving portion 41 includes a fixing base body having a base through hole in a middle portion thereof, and the second lens part 22 is received in the base through hole and fixed to an inner sidewall of the base through hole by the second barrel of the second lens part 22.

Specifically, in some embodiments of the present application, the first driving element 412 further includes a driving mechanism 4121 and a transmission mechanism 4122, wherein the driving mechanism 4121 is movably connected to the transmission mechanism 4122, and the transmission mechanism 4122 is movably connected to the movable sleeve 413. After the driving mechanism 4121 is energized, the driving mechanism 4121 drives the transmission mechanism 4122 to move, and the force generated by the first driving element 412 is transmitted to the movable sleeve 413 through the transmission mechanism 4122, thereby driving the movable sleeve 413 to move in the optical axis direction. The first driving element 412 of the present application is described by taking a stepper motor as an example.

Specifically, in some embodiments of the present application, the drive mechanism 4121 includes a drive 41211 and the transmission mechanism 4122 includes a gear arrangement 41221 and a drive screw 41222. The gear arrangement 41221 includes a first gear 412211 and a second gear 412212, the first gear 412211 is drivingly connected to the drive arrangement 41211, the second gear 412212 is drivingly connected to the drive screw 41222, and the first gear 412211 and the second gear 412212 intermesh to effect transmission of force. The driving device 41211 in the stepping motor controls the pitch angle of the stepping motor by controlling the electric pulse signal applied to the motor coil (the angle through which the rotor rotates per input of the pulse electric signal is called a step pitch angle). After the electric pulse signal is provided to the driving device 41211 of the stepper motor, the first gear 412211 disposed on the driving device 41211 rotates with the electric pulse signal, and the engagement between the first gear 412211 and the second gear 412212 drives the second gear 412212 to rotate, so that the driving screw 41222 can be engaged with the second gear 412212, and the force on the driving device 41211 can be transferred to the driving screw 41222.

Specifically, in some embodiments of the present application, one end of the stepping motor is fixed to the fixed base 417 of the first driving portion 41. The stepping motor is fixedly connected to the bottom end of the fixed base 417 of the first driving portion 41 by a fixing portion, and a first gear 412211 of the stepping motor is located between the fixed base 417 and the driving device 41211. That is, the driving device 41211 of the stepping motor, the gear device 41221, and the fixing base 417 are sequentially disposed along the height direction of the retractable lens to fully utilize the height space of the retractable lens. The height direction refers to the direction along the optical axis. Further, the fixed end of the stepping motor is positioned at a corner of the fixed base 417 of the first driving portion 41, so that the structure of the retractable lens is more compact.

As shown in fig. 2, 7 and 8, in some embodiments of the application, a drive screw 41222 is movably coupled to the movable sleeve 413. The movable sleeve 413 includes a sleeve main body 4131, a sleeve movable portion 4132, and a sleeve supporting portion 4133, wherein the sleeve main body 4131 is disposed between the sleeve movable portion 4132 and the sleeve supporting portion 4133, the sleeve main body 4131 is substantially cylindrical having a hollow structure forming a receiving chamber, and the second driving portion 42 and the first lens member 21 are disposed in the receiving chamber of the sleeve main body 4131. Further, in some embodiments of the present application, the sleeve moving portion 4132 is disposed at the bottom of the sleeve main body 4131, the sleeve supporting portion 4133 is disposed at the top of the sleeve main body 4131, and the movable sleeve 413 is movably connected to the driving screw 41222 through the sleeve moving portion 4132. In some embodiments of the application, the middle portion of the drive housing 411 has an opening 4111, the diameter of the opening 4111 being greater than the diameter of the sleeve body 4131 such that the sleeve body 4131 can move within the opening 4111 under the drive of the first drive element 412.

Specifically, in some embodiments of the present application, the retractable lens further includes a transparent cover plate 10, the transparent cover plate 10 is disposed on the light incident side of the optical lens 20, and the transparent cover plate 10 is fixed on the sleeve supporting portion 4133 to move along with the movement of the movable sleeve 413. In some embodiments of the present application, the top surface of the transparent cover plate 10 is not higher than the top surface of the sleeve support portion 4133, not only the optical lens 20 can be protected, but also an increase in the height of the retractable lens can be avoided. Further, the transparent cover plate 10 and the movable sleeve 413 may form an enclosed space, and the second driving part 42 and the optical lens 20 are accommodated therein, so that dirt such as dust or water is prevented from being polluted.

Specifically, in some embodiments of the present application, the sleeve movable portion 4132 is provided with a first movable connection end 41321, and the first movable connection end 41321 is internally threaded, so as to implement movement of the movable sleeve 413 along the optical axis direction by matching between the threads on the drive screw 41222 and the threads on the drive screw. In some embodiments of the present application, the material of the movable sleeve 413 is typically plastic and the material of the drive screw 41222 is typically metal, and debris may be generated when the two are moved against each other. In order to solve the above-mentioned problem, in other embodiments of the present application, a transmission member 413211, especially a metal transmission member, may be disposed in the first movable connecting end 41321, the outer surface of the transmission member 413211 is fixedly connected with the inner surface of the first movable connecting end 41321, and the inner surface of the transmission member 413211 has a threaded structure, so that the transmission member 413211 drives the movable sleeve 413 to move along the optical axis direction by matching the threads of the transmission member 413211 with the threads of the transmission screw 41222. The transmission screw 41222 is movably connected with the movable sleeve 413 through threads, so that the self-locking function of the first driving part 41 can be realized, namely, when the transmission screw 41222 rotates, the movable sleeve 413 can be driven to move along the optical axis direction; when the rotation of the drive screw 41222 is stopped, the movable sleeve 413 is also stopped, and the movable sleeve 413 does not move continuously due to sliding friction due to the presence of the threads, so that the movable sleeve 413 can be kept at a certain height, and the self-locking function of the first driving part 41 is realized.

More specifically, in some embodiments of the present application, the first driving part 41 further includes a guide member, wherein the guide member includes a main guide rod 4151 and a sub guide rod 4152, the main guide rod 4151 and the sub guide rod 4152 are precisely established as guide members that guide when the optical lens 20 moves in the optical axis direction, and the axis thereof is parallel to the optical axis of the optical lens 20. Further, in some embodiments of the present application, the sleeve movable portion 4132 of the movable sleeve 413 is provided with a second movable connecting end 41322 and a third movable connecting end 41323, and the second movable connecting end 41322 and the third movable connecting end 41323 are through holes or grooves, so that the main guide rod 4151 and the sub guide rod 4152 can be inserted into the second movable connecting end 41322 and the third movable connecting end 41323, respectively, and slidably move therein. The main guide rod 4151 is disposed beside the drive screw 41222 for support and guiding purposes, that is, the main guide rod 4151 is located on the same side of the retractable lens as the driving device 41211 and the drive screw 41222 of the stepper motor. The function of the secondary guide 4152 is to avoid undesired rotational movements of the movable sleeve 413 about the optical axis and may therefore be arranged on the side opposite to the stepper motor or on the side opposite to the primary guide 4151 based on the optical axis of the optical lens 20, see for this purpose the azimuthal relationship indicated by the dashed line L in fig. 9. When the stepping motor is disposed at a corner of the telescopic lens, the sub guide rod 4152 is disposed at a corner of the telescopic lens opposite thereto, i.e., the sub guide rod 4152 is located at a different side of the telescopic lens from the main guide rod 4151, thereby providing torque to prevent the movable sleeve 413 from rotating relative to the main guide rod 4151. One ends of the main guide rod 4151 and the sub guide rod 4152 are fixed to the fixing base 417 of the first driving portion 41, and the other ends are fixed to the driving housing 411, so that the main guide rod 4151 and the sub guide rod 4152 can be stably established in the retractable lens.

It should be noted that in some embodiments of the present application, the material of the movable sleeve 413 is typically plastic, and the material of the main guide 4151 is typically metal, and may generate debris when the two are moved frictionally with each other. To solve the above problem, in other embodiments of the present application, a metal connector 413221 may be disposed in the second movable connecting end 41322, the outer surface of the connector 413221 is fixedly connected to the inner surface of the second movable connecting end 41322, and the connector 413221 may be configured as a through hole or a groove, so that the main guide rod 4151 can be inserted into the connector 413221 and slidably move therein. That is, the connector 413221 is disposed within the second movable connecting end 41322 such that the connector 413221 is in direct frictional contact with the primary lever 4151. Preferably, the connector 413221 is a metallic material that prevents the generation of debris during active contact with the primary guide 4151.

Specifically, in some embodiments of the present application, the movable sleeve 413 further includes a sleeve protrusion 4134, and the sleeve protrusion 4134 is disposed on the sleeve support portion 4133 and extends toward the image side within the accommodating cavity of the sleeve main body 4131, for which reference may be made to the schematic diagrams of fig. 7 to 8. Here, the process of the retractable lens entering the non-working state is as follows: the movable sleeve 413 is moved in the image side direction by the driving of the first driving part, the sleeve protrusion 4134 of the movable sleeve 413 is in contact with the second driving part 42, the first driving element 412 drives the movable sleeve 413 to move further downward in the optical axis direction, i.e., in the image side direction, the sleeve protrusion 4134 abuts against the second driving part 42 to drive the second driving part 42 and the first lens part 21 supported in the second driving part 42 to move downward, thereby reducing the lens gap between the first lens part 21 and the second lens part 22, and the first elastic member 31 of the eject mechanism 30 is also compressed, thereby reducing the overall height of the telescopic lens in the non-operating state. The process of the telescopic lens entering the working state is as follows: the first driving element 412 drives the movable sleeve 413 to move upward in the optical axis direction, i.e., toward the object side, and the pressure exerted by the sleeve boss 4134 on the second driving portion 42 decreases until the abutment with the second driving portion 42 is released and the abutment pressure disappears, and at the same time, the first elastic member 31 of the eject mechanism 30 drives the second driving portion 42 and the first lens section 21 to move upward in the optical axis direction, i.e., toward the object side, by its elastic force, so that the first lens section 21 ejects for preliminary focusing.

Fig. 4 and 5 show different states of the second driving portion 42 in the non-operating state and in the operating state, respectively, including a stopper mechanism 418 carrying the second driving portion 42 and the first lens member 21 arranged in the second driving portion 42. Fig. 5 illustrates an operating state of the retractable lens in which the second driving portion 42, the first lens member 21 and the second stopper movable portion 4182 are in an extended state with respect to the first stopper fixed portion 4181, and fig. 4 illustrates a non-operating state of the retractable lens in which the second driving portion 42, the first lens member 21 and the second stopper movable portion 4182 are retracted into the first stopper fixed portion 4181.

In some embodiments of the present application, the inner side wall of the sleeve protrusion 4134 forms a sleeve through hole 41342, and the diameter of the sleeve through hole 41342 is larger than the diameter of the end surface of the first lens component 21, so that after preliminary focusing, there is enough movement space of the first lens component 21 along the optical axis direction, so that the second driving portion 42 can continuously drive the first lens component 21 to move along the optical axis direction to achieve precise focusing.

It will be appreciated that in some embodiments of the application, the second drive portion 42 is disposed between the sleeve boss 4134 and the ejector mechanism 30 as viewed in the optical axis direction. It can also be said that the second driving portion 42 achieves the movement of the second driving portion 42 in the optical axis direction by the sleeve protrusion 4134 of the movable sleeve 413 cooperating with the eject mechanism 30. The sleeve protrusion 4134 of the movable sleeve 413 is opposite to the ejection mechanism 30 along the optical axis direction, so that on one hand, the parallelism of the second driving portion 42 can be improved, and a stable support can be provided for the second driving portion 42 all the time in the moving process of the second driving portion 42, so that the second driving portion 42 is prevented from being dynamically inclined; on the other hand, the eject mechanism 30 is disposed between the second driving section 42 and the second lens member 22 as viewed in the optical axis direction, so that it is possible to avoid the damage of the optical lens 20 caused by the impact between the second driving sections 42 on the second lens member 22 when the retractable lens is in the retracted state.

Fig. 3 is an exploded view of the structure of the second drive portion 42 shown in fig. 2, along with a stop mechanism 418 carrying the second drive portion 42, as shown, in some embodiments of the present application, the first drive portion 41 further includes the stop mechanism 418. The stop mechanism 418 includes a first stop fixing portion 4181 and a second stop moving portion 4182, the first stop fixing portion 4181 is disposed on the fixed base 417 of the first driving portion 41, the second stop moving portion 4182 is disposed on the second driving portion 42, and the first stop fixing portion 4181 and the second stop moving portion 4182 cooperate with each other to limit movement of the second driving portion 42. Referring to fig. 7 and 8 together, the stop mechanism 418 may be disposed between the first driving portion 41 and the second driving portion 42, or between the movable sleeve 413 of the first driving portion 41 and the second driving portion 42, as seen in a direction perpendicular to the optical axis.

In some embodiments of the present application, the first stopper fixing portion 4181 extends upward from the inner side wall of the fixing base 417, the inside of the first stopper fixing portion 4181 is a hollow structure, and the top thereof is provided with a first stopper 41811 extending inward. The second stop movable portion 4182 is disposed inside the first stop fixed portion 4181, and the second stop movable portion 4182 includes a stop movable portion main body 41821, a stop movable portion through hole 41822, and a stop movable portion support post 41823, and the stop movable portion through hole 41822 is disposed in the middle of the stop movable portion main body 41821. The stopper movable portion through hole 41822 is larger in size than the maximum outer diameter of the first lens part 21 so that the first lens part 21 can move in the optical axis direction within the stopper movable portion through hole 41822 without interference. The stopper movable portion support column 41823 extends upward in the height direction along the outer side wall of the stopper movable portion main body 41821, and the stopper movable portion main body 41821 supports the second driving portion 42 thereon.

Specifically, in some embodiments of the present application, the pop-up mechanism 30 is disposed between the second lens component 22 and the second stop moving portion 4182, wherein one end of the support rod 32 is fixedly connected to the second lens barrel of the second lens component 22, and the other end of the support rod 32 is movably connected to the second stop moving portion 4182. In some embodiments of the present application, the stopper movable portion support post 41823 has a through hole therein, through which the other end of the support rod 32 is sleeved in the stopper movable portion support post 41823, so that the second stopper movable portion 4182 can move along the support rod 32 in the optical axis direction. In the embodiment shown in fig. 2, four through holes are provided in the stopper movable portion stay 41823, into which the corresponding four support rods 32 are respectively inserted.

In addition, one end of the first elastic member 31 of the pop-up mechanism 30 is fixedly connected to the top of the second lens component 22, and the other end of the first elastic member 31 is fixedly connected to the stop movable portion support 41823, and when the stop movable portion moves along the optical axis direction, the first elastic member 31 is driven to deform due to compression or stretching. Further, in some embodiments of the present application, the first elastic member 31 of the eject mechanism 30 may extend upward to the inside of the stopper movable portion support 41823 to increase the length of the first elastic member 31 so that the first elastic member 31 can generate a larger elastic force after being compressed. In some embodiments of the present application, the number of the ejector mechanisms 30 is at least three, and the number of the stopper movable portion posts 41823 is the same as the number of the ejector mechanisms 30, and the number of the stopper movable portion posts 41823 is at least three, so that the second stopper movable portion 4182 is driven and supported more stably during the movement.

Specifically, in some embodiments of the present application, during the upward movement of the second stopper movable portion 4182 in the optical axis direction, the stopper movable portion main body 41821 of the second stopper movable portion 4182 and the first stopper 41811 of the first stopper fixed portion 4181 contact each other to limit the movement of the second stopper movable portion 4182. In some embodiments of the present application, in the non-operating state, the first driving element 412 drives the movable sleeve 413 to move downward along the optical axis direction, the sleeve protrusion 4134 and the second driving portion 42 keep abutting each other, and downward pressure is generated when the sleeve protrusion 4134 abuts the second driving portion 42, so that the second driving portion 42 and the second stop moving portion 4182 are driven to move downward. The second stopper movable portion 4182 moves downward to compress the first elastic member 31, and the stopper movable portion main body 41821 and the first stopper 41811 are separated from each other, i.e., the top surface of the stopper movable portion main body 41821 is lower than the bottom surface of the first stopper 41811 and does not contact with each other. In the operating state, the first driving element 412 drives the movable sleeve 413 to move upward in the optical axis direction, the pressure generated by abutment of the sleeve boss 4134 against the second driving portion 42 is reduced until canceled, and at the same time, the first elastic member 31 drives the second stopper movable portion 4182 to move upward in the optical axis direction by its elastic force, in which the second driving portion 42 is kept in abutment with the sleeve boss 4134 all the time. When the stopper movable portion main body 41821 contacts the first stopper 41811, the movement of the second stopper movable portion 4182 is restricted by the first stopper fixed portion 4181 and cannot continue to move upward. Further, the first driving element 412 continues to drive the movable sleeve 413 to move upward, so that a certain gap is generated between the bottom surface of the sleeve protrusion 4134 of the movable sleeve 413 and the bottom surface of the second driving portion 42, thereby avoiding tilting of the second driving portion 42 and the optical lens 20 when the stepper motor is driven, and forming an advantageous heat dissipation cavity inside the retractable lens.

More specifically, in some embodiments of the present application, the stopper movable portion support posts 41823 of the second stopper movable portion 4182 have a certain gap with the side wall of the second driving portion 42, and it is understood that the stopper movable portion main body 41821 of the second stopper movable portion 4182 may also have a certain gap with the bottom surface of the second driving portion 42. This is because the optical lens 20 in the present application is a split lens, in the assembling process, the second driving portion 42 and the first lens component 21 are assembled to form a semi-finished product, and then at least one direction adjustment is performed between the semi-finished product and the second lens component 22, so as to meet the imaging requirement of the telescopic camera module. In the present application, a certain adjustment gap is left between the side and bottom of the second lens component 22 and the second stop movable portion 4182, so as to facilitate active calibration in the subsequent assembly process.

Further, in some embodiments of the present application, the movable sleeve 413 may also further include a second resilient member 4135, with which the cushioning effect is achieved by the second resilient member 4135. Specifically, a second elastic member 4135 is disposed between the second movable connecting end 41322 of the sleeve movable portion 4132 of the movable sleeve 413 and the connecting piece 413221, one end of the second elastic member 4135 is fixedly connected to the main guide rod 4151, and the other end of the second elastic member 4135 is fixedly connected to the second movable connecting end 41322 and the connecting piece 413221. In some embodiments of the application, the second resilient member 4135 is a spring. When the retractable lens is in the working state, the second movable connecting end 41322 of the movable sleeve 413 can drive the second elastic member 4135 and the connecting piece 413221 to move upwards along the main guide rod 4151, and generate a certain compression on the second elastic member 4135, and generate a certain buffering effect on the movement of the movable sleeve 413 through the elastic force of the second elastic member 4135. When the retractable lens is in the non-working state, the second movable connecting end 41322 of the movable sleeve 413 can drive the second elastic member 4135 and the connecting piece 413221 to move downwards along the main guide rod 4151, and a certain stretching is generated on the second elastic member 4135, and a certain buffering effect is generated on the movement of the first carrier through the reactive elastic force of the second elastic member 4135. Of course, in other embodiments of the present application, the second elastic member 4135 may be disposed on the sub-guide 4152, which is not limited in the present application.

As shown in fig. 2, in some embodiments of the present application, the first driving part 41 further includes a waterproof and dustproof cover 414, one end of the waterproof and dustproof cover 414 is fixed to the bottom surface of the driving housing 411, and the other end is fixed to the top surface of the sleeve movable portion 4132 of the movable sleeve 413. The waterproof and dustproof sleeve 414 is an integral foldable sleeve between two ends, and is particularly made of flexible materials. In some embodiments of the present application, the waterproof and dustproof cover 414 is made of metal at both ends and rubber in the middle. Of course, in another specific example of the present application, the two ends and the middle of the waterproof and dustproof cover 414 may be made of the same rubber material. When the telescopic lens is in a working state, the movable sleeve 413 moves upwards along the optical axis direction, and the waterproof and dustproof sleeve 414 is extruded to be in a contracted state; when the retractable lens is in the non-working state, the movable sleeve 413 moves downward along the optical axis direction, and the waterproof and dustproof cover 414 is stretched to be in the stretched state.

Specifically, in some embodiments of the present application, the driving housing 411 and the waterproof and dustproof cover 414 house the first driving element 412 in a closed space, so as to prevent impurities such as dust or water vapor from entering the retractable lens, thereby achieving waterproof and dustproof effects.

In some embodiments of the present application, the first driving part 41 further includes a first sensing assembly for sensing a moving position of the retractable lens. The first sensing component includes a first position sensing magnet and a first position sensing element, the first position sensing magnet is disposed on the movable sleeve 413, the first position sensing element is disposed on the fixed base 417 of the first driving portion 41, and the first position sensing magnet is disposed opposite to the first position sensing element. In some embodiments of the present application, the first position sensing magnet may move along the optical axis direction along with the movable sleeve 413, and the first position sensing element senses the magnetic field intensity of the first position sensing magnet, so that the position of the movable sleeve 413 may be determined, and the movable sleeve 413 is further driven to move to a required position, so that the driving component is controlled according to a predetermined focusing procedure, and focusing is further achieved. In some embodiments of the present application, the first position sensing magnet is a plurality of magnet cores stacked together to match with a larger movement stroke of the retractable lens. In the present application, the first position sensing element may be a hall element, a driving IC, or a TMR.

Further, in some embodiments of the present application, the first driving part 41 further includes a first electrical connection. In some embodiments of the present application, in order to facilitate the line conduction, the first electrical connection part is integrally formed with the fixed base 417 of the first driving part 41 using an Insert molding technique (Insert molding), and is conducted to the outside of the retractable lens from the fixed base 417. In another specific example of the present application, at least two LDS grooves may be provided on the surface of the fixed base 417 of the first driving portion 41, and an LDS (laser direct structuring technology) is applied in the grooves, and a conductive plating layer (for example, a nickel-palladium-gold plating layer) is plated on the surface of the LDS groove, so that interference of other metals in the interior can be avoided, and circuit conduction can be achieved. In another specific example of the present application, the first electrical connection portion extends downward to the circuit board 61 of the photosensitive assembly 200, and is conducted to an external circuit through the circuit board 61 of the photosensitive assembly 200, which is not limited in the present application.

The second driving portion 42 is described further herein with reference to fig. 4 to 5. As described above, the first lens member 21 may be disposed in the second driving portion 42, and is driven to move in the optical axis direction by the second driving portion 42 for precise focusing. Specifically, in some embodiments of the present application, the second driving portion 42 includes a second driving element 421, a movable carrier 422, a fixed carrier 423, and a magnetic attraction member 426. The fixed carrier 423 includes a base 4231 and a casing, where the casing is sleeved on the base 4231 and accommodates the second driving element 421 of the second driving portion 42, the movable carrier 422, the magnetic attraction member 426, and other elements therein. The housing of the fastening carrier 423 can also serve here as an outer housing of the entire second drive section 42. The fixed carrier 423 of the second driving part 42 may be configured as a stator, and the base 4231 of the fixed carrier 423 of the second driving part 42 may be disposed on the second stopper movable portion 4182 of the stopper mechanism 418 of the first driving part 41 such that the second driving part 42 may move with the movement of the second stopper movable portion 4182 of the stopper mechanism 418 of the first driving part 41 to achieve preliminary focusing. When the second stop movable portion 4182 of the stop mechanism 418 of the first driving portion 41 stops moving, the driving force generated by the second driving element 421 of the second driving portion 42 can continue to drive the movable carrier 422 of the second driving portion 42 to move along the optical axis direction, so as to achieve precise focusing. The first lens component 21 is disposed in the movable carrier 422 of the second driving part 42, and when the second driving element 421 of the second driving part 42 drives the movable carrier 422 of the second driving part 42 to move in the optical axis direction, the first lens component 21 disposed in the second driving part 42 can also move accordingly.

Specifically, in some embodiments of the present application, the second driving element 421 of the second driving section 42 is described by taking the VCM motor as an example. For example, referring to fig. 6, the second driving element 421 of the second driving portion 42 includes at least one focusing coil 4212 and at least one focusing magnet 4211, the at least one focusing coil 4212 is disposed on an inner sidewall of a housing of the fixed carrier 423 of the second driving portion 42, and the at least one focusing magnet 4211 is disposed on the fixed carrier 423 of the second driving portion 42 and is disposed opposite to the at least one focusing coil 4212. The at least one focusing magnet 4211 may be provided on the side of the movable carrier 422 or may be provided at the corner of the fixed carrier 423, as long as it is provided opposite to the at least one focusing coil 4212. In other embodiments of the present application, the positions of the at least one focusing coil 4212 and the at least one focusing magnet 4211 may be exchanged, i.e. the at least one focusing coil 4212 is disposed on the movable carrier 422 and the at least one focusing magnet 4211 is disposed on the fixed carrier 423.

Specifically, referring to fig. 9, in some embodiments of the present application, the movable carrier 422 of the second driving portion 42 is configured to have a polygonal shape including at least four sides and at least four corners, wherein the movable carrier 422 is provided with a cut edge at least one of the four corners. In some embodiments of the application, the movable carrier 422 includes a first edge 4221 and a second edge 4223, the first edge 4221 and the second edge 4223 being non-parallel to each other and angled. The movable carrier 422 further includes a third side 4222, two ends of the third side 4222 are respectively connected to the first side 4221 and the second side 4223, and the third side 4222 is not parallel to the first side 4221 and the second side 4223, and is at an angle. Further, the number of the trimming is greater than 1, and in another specific example of the present application, the number of the trimming is four, that is, four corners of the movable carrier 422 are trimmed, and the movable carrier 422 has an octagonal structure. It should be noted that, since the movable carrier 422 of the second driving portion 42 is movably disposed in the fixed base 417 of the first driving portion 41, the shape of the fixed carrier 423 of the second driving portion 42 and the shape of the movable carrier 422 are mutually adapted, i.e. the fixed carrier 423 of the second driving portion 42 also includes a first side, a second side, and a third side, and the first side, the second side, and the third side of the fixed carrier 423 are opposite to the first side 4221, the second side 4223, and the third side 4222 of the movable carrier 422 of the second driving portion 42. In short, the above description of the topographical features of the movable carrier 422 also applies, at least in part, to the stationary carrier 423.

In some embodiments of the present application, the second drive portion 42 is disposed inside the movable sleeve 413, the size and shape of the second drive portion 42 being primarily affected by the movable carrier 422 and the fixed carrier 423. In some embodiments of the present application, the second driving portion 42 has a polygonal cross section, the movable sleeve 413 has a polygonal cross section and is circumscribed by a circle, and the smaller the number of sides of the movable carrier 422, the larger the size of the movable sleeve 413 on the outer side thereof is required. Therefore, in order to reduce the lateral dimension of the second driving portion 42, in the present application, the corners of the movable carrier 422 are subjected to trimming processing to increase the number of sides of the movable carrier 422, thereby reducing the lateral dimension of the movable sleeve 413. Of course, it will be appreciated that the movable carrier 422 is most space efficient within the movable sleeve 413 when the movable carrier 422 is approximately circular in shape, and in some embodiments of the present application the cross-sectional shape of the movable carrier 422 is configured as an octagon to reduce the lateral dimension of the second drive section 42. In another specific example of the present application, the cross-sectional shape of the movable carrier 422 may be sixteen deformed or the like, which is not limited by the present application. Correspondingly, the outer shape and dimensions of the movable sleeve 413 may be configured according to the dimensions and outer shape of the second drive part 42, in particular according to the dimensions and outer shape of the fixed carrier 423 and the movable carrier 422. Alternatively, the movable sleeve 413 may be configured to have a polygonal shape inside and a circular shape outside, which match the second driving portion 42. Further alternatively, the movable sleeve 413 may be constructed integrally with the outer casing of the second drive portion 42.

Specifically, in some embodiments of the present application, the number of focusing coils 4212 and focusing magnets 4211 is two, respectively. Referring to the dotted octagon in fig. 9, a first focusing magnet may be provided on the first side 4221 of the movable carrier 422, a second focusing magnet may be provided on the second side 4223 of the movable carrier 422, a first focusing coil may be provided on the first side 4221 of the fixed carrier 423, a second focusing coil may be provided on the second side 4223 of the fixed carrier 423, and two coils may be provided opposite to the two magnets. When the first edge 4221 and the second edge 4223 are perpendicular to each other to form an included angle of 90 degrees, that is, the first focusing actuator formed by the first focusing coil and the first focusing magnet and the second focusing actuator formed by the second focusing coil and the second focusing magnet form an included angle of 90 degrees, so as to generate a thrust force for balancing the movable carrier 422 in the driving process, thereby reducing the inclination generated in the driving process.

In some embodiments of the present application, the first driving element 412 of the first driving part 41 and the second driving element 421 of the second driving part 42 are arranged offset from each other as viewed in a cross section of the telescopic lens. Alternatively, the first driving element 412 of the first driving part 41 and the second driving element 421 of the second driving part 42 are not on the same straight line passing through the optical axis in a projection plane perpendicular to the optical axis of the optical lens 20. Referring to fig. 9, the first driving element 412 of the first driving part 41, for example, a stepping motor, is disposed on a broken line L passing through the optical axis, and the second driving element 421 of the second driving part 42 should be disposed in other orientations, for example, on other sides of the octagon shown by the broken line, which are not penetrated by the broken line L, so as to avoid being directly diametrically opposed to the first driving element 412 of the first driving part 41. Through this kind of setting method, on the one hand can make full use of the inside structure space position of telescopic lens, reduce telescopic lens's structure size as far as possible, on the other hand can leave certain space of dodging for other spare parts such as step motor and guide member, further optimize telescopic lens's overall structure, ensure telescopic lens's imaging quality simultaneously.

In some embodiments of the present application, the sides of the second driving portion 42 are parallel to the sides of the retractable lens, when the first driving element 412 is a stepper motor, the first driving element 412 is disposed at a corner of the retractable lens, and the second driving element 421 is disposed at least one side of the retractable lens, which can provide a certain avoiding space for the disposition of the first driving element 412 due to the larger size of the stepper motor, and can make the retractable lens more compact. The sides of the second driving portion 42 and the sides of the retractable lens may refer to sides of the polygonal outer shape of the housing thereof in a cross section perpendicular to the optical axis, and the sides are connected to form an angle. For example, in the cross section shown in fig. 9, the stepping motor is arranged at one corner of the quadrangular cross section of the telescopic lens.

In some embodiments of the present application, the second driving part 42 has a polygonal shape in a cross section perpendicular to the optical axis of the optical lens 20, wherein a side of the second driving part 42 corresponding to the position of the first driving element 412 of the first driving part 41 is different from, i.e., not the same side as, a side of the second driving part 42 corresponding to the position of the second driving element 421.

Specifically, in some embodiments of the present application, the stepper motor corresponds to one cut edge of the movable carrier 422 or the fixed carrier 423, and the second driving element 421 is disposed on both sides of the movable carrier 422 or the fixed carrier 423 adjacent to the cut edge. It should be noted that here, a cut edge of the movable carrier 422 or the fixed carrier 423 may also be understood as a side edge of a polygonal shape of the movable carrier 422 or the fixed carrier 423 in a cross section perpendicular to the optical axis. It can also be said that the second driving part has a polygonal shape as a whole, wherein the side of the second driving part corresponding to the stepping motor (the side of the dotted octagon shown in fig. 9 directly facing the stepping motor, i.e. the side through which the dotted line L passes) and the side of the second driving part corresponding to the second driving member 421 are not parallel to each other. In other words, the sides of the corresponding second driving portion of the second driving element 421 can only be those sides of the dashed octagon shown in fig. 9 which are not penetrated by the dashed line L. The arrangement mode can fully utilize the space position in the telescopic lens on one hand and can leave a certain avoiding space for the stepping motor and the guide member on the other hand.

Specifically, in some embodiments of the present application, the first driving element 412 of the first driving portion 41 is disposed on the opposite side of the second driving element 421 of the second driving portion 42, or is disposed offset from each other, as viewed in the cross section of the telescopic lens. For example, the second driving portion 42 has a polygonal structure in outline, wherein the side of the second driving portion 42 closest to the first driving element 412 of the first driving portion 41 is not the same side as the side of the second driving portion 42 where the second driving element 421 is located. It can also be said that the distance from the first driving element 412 of the first driving part 41 to the plane on the nearest side of the second driving part 42 is smaller than the distance from the first driving element 412 of the first driving part 41 to the plane on which the second driving element 421 is provided on the second driving part 42. In other words, the first driving element 412, such as a stepping motor, and the second driving element 421, such as a focusing coil 4212 and a focusing magnet 4211, are disposed away from each other as much as possible in a projection plane perpendicular to the optical axis, not close to each other. This arrangement not only achieves the above-described advantageous effects, but also further avoids magnetic interference between the first driving element 412 and the second driving element 421.

Fig. 6 is a schematic positional relationship of main components of the second driving element 421 of the second driving section 42, and here schematically illustrates a structure and a relative positional relationship of main components of the second driving element 421, such as the focusing substrate 427, the focusing magnet 4211, the focusing coil 4212, the magnet 4261, and the first yoke 4262. As shown in fig. 6, in some embodiments of the present application, the magnet 426 includes a magnet 4261 and a first yoke 4262, the magnet 4261 being disposed opposite to the first yoke 4262 so that the first lens part 21 of the optical lens 20 can return to an initial position (initial position refers to an initial position of the optical lens 20) after moving by a magnetic attraction force between the magnet 4261 and the first yoke 4262. In some embodiments of the present application, the magnet 4261 is disposed on the movable carrier 422, and the first yoke 4262 is disposed on the fixed carrier 423 opposite to the magnet 4261, that is, the magnet 4261 may move with the movable carrier 422, and after the focusing coil 4212 stops energizing, the magnet 4261 and the first yoke 4262 have a magnetic attraction force to return the movable carrier 422 to the initial position.

Alternatively, an iron piece 4263 may be provided on the focusing substrate (FPC) 427 on the side opposite to the focusing coil 4212. The iron piece 4263 facing away from the focusing coil 4212 on the back surface of the focusing substrate 427 is for increasing strength. Further alternatively, an iron piece 4264, which is a magnetic conductive piece for example, may be provided on the back surface of the focusing magnet 4211 for restricting the magnetic field size, enhancing the strength, and reducing the magnetic field overflow.

Specifically, in some embodiments of the present application, the magnet 4261 is disposed on the third side 4222 of the movable carrier 422, and the first yoke 4262 is disposed on the third side of the fixed carrier 423 opposite thereto. That is, the magnet 4261 is disposed between the first focusing magnet and the second focusing magnet, and the first yoke 4262 is disposed between the first focusing coil and the second focusing coil, as seen in the circumferential direction around the optical axis. The magnetic attraction member 426 may be said to be disposed in the middle region of the adjacent surface of the driving portion where at least two sets of coils and at least two sets of magnets are located. In some embodiments of the present application, the magnetic attraction member 426 and the first driving element 412 are disposed on opposite sides, or are offset from each other, that is, the edge of the second driving portion 42 where the magnetic attraction member 426 is located is not the same edge of the second driving portion 42 corresponding to the first driving element 412, so as to avoid magnetic interference between the magnetic attraction member 426 and the first driving element 412.

Specifically, in some embodiments of the present application, since the third side forms a certain angle with both the first side and the second side, the second driving element 421 and the magnetic member 426 also form a certain angle in a cross section perpendicular to the optical axis. The direction of the magnetic attraction force generated between the magnetic attraction magnet 4261 and the first yoke 4262 may be not perpendicular to the plane in which the driving force generated by the focusing magnet 4211 and the focusing coil 4212 is located. The plane in which the driving force is located is a plane in which the focusing coil 4212 or the focusing magnet 4211 is located in the optical axis direction. The horizontal direction refers to a direction in a plane perpendicular to the optical axis direction.

In some embodiments of the present application, as shown in fig. 3, a support member 424 is provided between the movable carrier 422 and the fixed carrier 423 so that the movable carrier 422 always supports and guides the movable carrier 422 while moving with respect to the fixed carrier 423, and also friction between the movable carrier 422 and the fixed carrier 423 can be reduced.

Specifically, in some embodiments of the present application, at least two extending posts 42311 extend upward from the base 4231 of the fixed carrier 423, the support assembly 424 is clamped between the at least two extending posts 42311 and the movable carrier 422, and a track is provided between the at least two extending posts 42311 and the movable carrier 422 to accommodate the support assembly 424 therein. In some embodiments of the present application, the number of support members 424 is two, and the corresponding number of tracks is the same as the number of support members 424. Wherein the track comprises a first track and a second track. In some embodiments of the present application, the movable carrier 422 may further include a fourth side and a fifth side, one end of the fourth side being connected to the second side, one end of the fifth side being connected to the first side, and the fourth side being non-parallel to and angled with respect to the second side, the fifth side being non-parallel to and angled with respect to the first side, and the fourth side, the fifth side being non-parallel to and angled with respect to the third side. The first track is arranged on the fourth side, and the second track is arranged on the fifth side. Of course, in other embodiments of the present application, the sixth side, the seventh side, the eighth side may also exist, such that the movable carrier 422 is hexagonal, heptagonal, octagonal, etc., and the present application is not limited thereto. The fourth and fifth sides are cut edges formed at the corners of the movable carrier 422 as a whole.

Specifically, in some embodiments of the present application, the support assembly 424 may be configured as a guide bar 4243, which not only reduces the overall height of the second driving portion 42, but also prevents the movable carrier 422 from being dynamically tilted during movement. Of course, in other embodiments of the present application, the support assembly 424 may also be configured as a ball or a slider, as the present application is not limited in this regard. It should be noted that, in the present application, the supporting component 424 is disposed at the corner of the second driving portion 42, not only makes full use of the free space of the corner of the second driving portion 42, but also has a larger wall thickness at the corner of the fixed carrier 423 and the movable carrier 422, so as to avoid breaking when forming the track. Here, the magnetic attraction member may also be held between the fixed carrier 423 and the movable carrier 422 by the magnetic attraction holding support assembly 424 at all times.

Further, in some embodiments of the present application, the second driving portion 42 further includes a second electrical connection portion 427, where the second electrical connection portion 427 may be a focusing substrate (FPC), and the focusing substrate 427 is disposed on an inner side surface of the housing, and the focusing coil 4212 may be disposed on the focusing substrate 427 and on a side facing the focusing magnet 4211, so as to simplify an electrical connection structure of the second driving portion 42, and achieve line conduction of the focusing coil 4212 through the focusing substrate 427. In some embodiments of the present application, the second electrical connection 427 may extend downward to the fixed base 417 of the first driving part 41 to make electrical circuit connection with the first electrical connection on the fixed base 417 of the first driving part 41. Of course, in other embodiments of the present application, the second electrical connection 427 may be implemented in other manners, which is not limited in the present application.

It should be noted that, in some embodiments of the present application, the second driving portion 42 further includes a second position sensing element disposed on a side of the focusing substrate 427 facing the magnet 4261. The magnet 4261 may move along the optical axis direction along with the movable carrier 422, and the second position sensing element senses the magnetic field strength of the magnet 4261, so as to determine the position of the movable carrier 422, and further drive the movable carrier 422 to move to a desired position. In the present application, the second position sensing element may be a hall element, a driving IC, or a TMR.

Specifically, in some embodiments of the present application, the first yoke 4262 is disposed on the focusing substrate 427, and the first yoke 4262 may be disposed on the focusing substrate 427 in correspondence with the position of the magnet 4261. As shown in fig. 6, the first yoke 4262 may be disposed on the front surface of the focusing substrate 427 facing the magnet 4261, or on the inner surface of the focusing substrate 427; alternatively, the first yoke 4262 may be disposed opposite to the magnet 4261 on the back surface of the focusing substrate 427 or on the outer surface of the focusing substrate 427. Further, the focusing substrate 427 connects at least two focusing coils 4212, and the first yoke 4262 is disposed in a middle area of the two focusing coils 4212 on the focusing substrate 427.

The magnetic attraction member 426, the at least two coils and the at least two magnets are arranged on different sides of the driving part separately, and the magnetic attraction member 426 is arranged in the middle area of the adjacent surfaces of the driving part where the at least two coils and the at least two magnets are located, so that not only can the increase of the single-side size of the camera module be avoided, but also the generation of inclination in the driving process, namely the generation of dynamic inclination, can be avoided.

The application also provides a camera module, which is also called as a telescopic camera module, and comprises a telescopic lens and a photosensitive assembly, wherein the telescopic lens is arranged on a photosensitive path of the photosensitive assembly, so that light reflected by an object is imaged on the photosensitive assembly after passing through the telescopic lens. The telescopic lens of the camera module can be telescopic relative to the photosensitive assembly, namely, the telescopic lens can be switched between an extended working state and a retracted non-working state, wherein in the working state, the telescopic lens is extended for focusing and imaging, and in the non-working state, the telescopic lens is retracted so as to reduce the overall height dimension of the telescopic camera module, provide a flat surface and a regular shape for terminal equipment such as a mobile phone and the like, and simultaneously facilitate storage or transportation.

According to some embodiments of the present application, as shown in fig. 7 and 8, the photosensitive chip 62 of the photosensitive assembly 200 is disposed on the light emitting side of the retractable lens along the optical axis direction, and is configured to receive the external light collected by the retractable lens and perform imaging. At present, the imaging quality of the camera module is improved, and the size of the photosensitive chip 62 is increased, so that along with the increasing size of the photosensitive chip 62, especially after the image surface size of the photosensitive chip 62 is increased to 1 inch, the size of the telescopic camera module is increased further. As described above, the retractable lens is disposed on the photosensitive assembly 200 to achieve the reduction of the height dimension and the lateral dimension of the retractable camera module. However, since the size of the retractable lens is relatively large, when the retractable lens is to be driven to realize the optical anti-shake function, not only a large driving force is required, but also the size of the retractable lens is further increased. Accordingly, in the present application, an optical anti-shake function is provided on the photosensitive member 200.

Specifically, in some embodiments of the present application, the photosensitive assembly 200 includes a mounting member, where the mounting member includes a circuit board 61 and components such as a photosensitive chip 62, an electronic component (not shown), a filter element 63, and a filter element bracket 64 mounted on the circuit board 61. The wiring board 61 includes a wiring board 61 main body, a connection tape (not shown) that connects the wiring board 61 main body and the connector portion and realizes electrical conduction between the wiring board 61 main body and the connector portion, and a connector portion (not shown). The photosensitive chip 62 and electronic components (not shown) are electrically connected to the main body of the wiring board 61, and the connector is mounted to the connector portion. The photosensitive chip 62 is used for receiving external light collected by the telescopic lens, imaging and is electrically connected with the portable device through the circuit board 61. The photo-sensing chip 62 includes a photo-sensing region and a non-photo-sensing region, and the photo-sensing chip 62 is electrically connected to the circuit board 61 through a pad of the photo-sensing chip 62 located in the non-photo-sensing region, for example, the photo-sensing chip 62 is electrically connected to a main body of the circuit board 61 through wire bonding (wire bonding), soldering, FC process (flip chip), RDL (re-wiring layer technology), or the like. The photosensitive chip 62 is adapted to be fixed to the front surface of the main body of the circuit board 61 by an adhesive medium (the surface of the circuit board 61 facing the optical lens 20 is defined as the front surface, and the opposite side of the circuit board 61 from the front surface is the bottom surface of the circuit board 61). In some embodiments of the present application, a groove or a through hole (a through hole of the circuit board 61) is formed in the middle of the main body of the circuit board 61, and the photosensitive chip 62 is mounted and fixed in the groove or the through hole of the circuit board 61, so that the influence of the thickness of the main body of the circuit board 61 on the thickness of the photosensitive assembly 200 is reduced, and the height of the camera module is reduced.

Specifically, in some embodiments of the present application, a filter element holder 64 is provided on the main body of the wiring board 61 for supporting other components. In one embodiment of the present application, the filter element holder 64 is implemented as a separately molded plastic holder that is attached to the surface of the main body of the wiring board 61 by an adhesive medium and serves to support other components. Of course, in other embodiments of the present application, the filter element holder 64 may be formed on the main body of the circuit board 61 in other manners, for example, the filter element holder 64 is implemented as a molded base, which is integrally formed at a predetermined position of the main body of the circuit board 61 through a molding process, which is not limited to the present application.

Specifically, in some embodiments of the present application, a filter element 63 is held on the photosensitive path of the photosensitive chip 62 for filtering the imaging light entering the photosensitive chip 62. In one specific example of the present application, the filter element 63 is mounted on the filter element holder 64 and corresponds to at least the photosensitive region of the photosensitive chip 62. It should be noted that in other examples of the application, the filter element 63 may be indirectly mounted to the filter element holder 64 by other supports. In other embodiments of the present application, the filter 63 may be mounted at other positions of the image capturing module, for example, the filter 63 may be formed in the optical lens 20 (e.g., as a filter attached to a surface of a certain optical lens of the optical lens 20), which is not limited to the present application.

In some embodiments of the present application, the photosensitive assembly 200 further includes a third driving portion 50, where the third driving portion 50 is adapted to drive the photosensitive chip 62 of the mounting member to translate, rotate or tilt, so as to implement the anti-shake function of the photosensitive chip 62 of the telescopic camera module. Further, the third driving portion 50 includes a chip anti-shake fixing portion 501, a chip anti-shake movable portion 502, and a third driving element, which may be a VCM motor, a piezoelectric motor, an SMA motor, or the like, and the SMA motor is described as an example in the present application to further reduce the height of the photosensitive assembly 200. The third driving element includes at least one SMA wire, and the mounting piece is disposed on the chip anti-shake movable portion 502, and the at least one SMA wire drives the mounting piece to implement an optical anti-shake function in at least one direction.

Specifically, in some embodiments of the present application, the chip anti-shake movable portion 502 is disposed in the chip anti-shake fixing portion 501, at least one SMA wire is disposed between the chip anti-shake movable portion 502 and the chip anti-shake fixing portion 501, one end of the at least one SMA wire is connected to the chip anti-shake movable portion 502, and the other end of the at least one SMA wire is connected to the chip anti-shake fixing portion 501, and when the at least one SMA wire is heated and contracted, the at least one SMA wire drives the chip anti-shake movable portion 502 to move, so as to implement the optical anti-shake function of the photosensitive assembly 200.

In some embodiments of the present application, the at least one SMA wire includes a first SMA wire, a second SMA wire, a third SMA wire, and a fourth SMA wire, where the first SMA wire, the second SMA wire, the third SMA wire, and the fourth SMA wire are respectively disposed on four sides of the chip anti-shake fixing portion 501, that is, two SMA wires opposite to each other in the four SMA wires are parallel, and two adjacent SMA wires are perpendicular to each other.

In some embodiments of the present application, the circuit board 61 extends upward from the bottom surface of the light sensing assembly 200 and from the side of the telescopic camera module to the external electronic device. On the one hand, the reactive force of the circuit board 61 during the movement is reduced; on the other hand, the transverse dimension of the telescopic camera module can be fully utilized.

Fig. 10 is a schematic diagram of an electronic device, to which the camera module and the retractable lens according to the present application are applied. The electronic device includes an electronic device main body 1000 and at least one camera module 2000 disposed in the electronic device main body 1000, including the retractable lens described in the above embodiments. The image capturing module 2000 is mounted on the electronic device main body 1000, and may be used as a front image capturing lens or a rear image capturing lens of the electronic device. Optionally, in some embodiments of the present application, the electronic device may be, but is not limited to, a mobile phone, a computer, a tablet computer, and other photographing devices with photographing functions, such as a smart wearable device, a monitoring device, and the like.

It should be noted that the technical solutions presented herein are not limited to what has been described in the above description, and that a person skilled in the art may make numerous variations and modifications to the above-described embodiments without departing from the inventive idea of the present invention, which variations and modifications are all within the scope of protection of the present invention.

Claims

1. A retractable lens is characterized in that the retractable lens comprises,

a first driving part including a first driving element; and

2. The retractable lens according to claim 1, wherein, in a projection plane perpendicular to the optical axis of the optical lens, a projection of the second driving portion in the optical axis direction of the optical lens and a projection of the second lens component in the optical axis direction of the optical lens overlap at least partially.

3. The retractable lens according to claim 2, wherein a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens falls inside a projection of a maximum outer diameter of the second lens component in the optical axis direction of the optical lens.

4. The retractable lens according to claim 2, wherein a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens and a projection of a maximum outer diameter of the second lens component in the optical axis direction of the optical lens coincide with each other.

5. The retractable lens according to claim 2, wherein a projection of an outermost side of the second driving portion in the optical axis direction of the optical lens falls outside a projection of a maximum outer diameter of the second lens component in the optical axis direction of the optical lens.

6. The retractable lens according to claim 2, wherein a maximum diameter size of the first lens component is smaller than a maximum diameter size of the second lens component, the second driving element of the second lens component being disposed on a peripheral side of the first lens component.

7. The retractable lens according to any one of claims 1 to 6, wherein the first driving portion further comprises a movable sleeve, the first driving element of the first driving portion being in driving connection with the movable sleeve so as to be capable of driving the movable sleeve to move in the optical axis direction of the optical lens, wherein the movable sleeve further comprises a sleeve protrusion extending in the image side direction within the accommodation chamber of the sleeve body, wherein the sleeve protrusion of the movable sleeve presses against the second driving portion in the non-operating state of the retractable lens.

8. The retractable lens according to claim 7, wherein the first driving element of the first driving portion further comprises a driving mechanism and a transmission mechanism in driving connection with the driving mechanism, wherein the first driving element is in driving connection with the movable sleeve through the transmission mechanism, wherein the driving mechanism of the first driving element of the first driving portion comprises a driving means comprising a gear arrangement and a drive screw, the gear arrangement comprising a first gear and a second gear intermeshed with the first gear, wherein the first gear is driven by the driving means, the second gear is in driving connection with the drive screw, and the drive screw is in driving connection with the first articulation end of the movable sleeve.

9. The retractable lens according to claim 7, wherein the first driving portion further comprises a guide member for guiding the movement of the movable sleeve, the guide member comprising a main guide rod inserted into the second movable connecting end of the movable sleeve and a sub guide rod inserted into the third movable connecting end of the movable sleeve, wherein the main guide rod and the sub guide rod extend parallel to the optical axis direction of the optical lens, one end of which is fixed to the fixed base of the first driving portion, and the other end of which is fixed to the driving housing of the first driving portion, wherein the main guide rod and the first driving element of the first driving portion are located on the same side of the retractable lens in a projection plane perpendicular to the optical axis of the optical lens, and the sub guide rod is located on the opposite side of the retractable lens from the main guide rod based on the optical axis of the optical lens.

10. The retractable lens according to claim 7, wherein the second driving portion further comprises a fixed carrier and a movable carrier movable with respect to the fixed carrier in a direction of an optical axis of the optical lens, wherein the movable carrier has the accommodation chamber for accommodating the first lens member of the optical lens.

11. The retractable lens according to claim 10, wherein the retractable lens further comprises at least one ejector mechanism provided between the first lens part and the second lens part, wherein in an operating state of the retractable lens, the second driving portion is caused to protrude with respect to the second lens part together with the first lens part arranged in the second driving portion by the at least one ejector mechanism.

12. The retractable lens according to claim 11, wherein the first driving portion and the eject mechanism are arranged to provide driving forces in opposite directions, wherein in an operating state of the retractable lens, the first driving portion and the eject mechanism cooperate with each other to drive the second driving portion together with the first lens member arranged in the second driving portion to a first position in an optical axis direction of the optical lens, wherein the second driving portion is arranged to drive the first lens member arranged in the second driving portion to move in the optical axis direction of the optical lens during and/or after being driven to the first position by the first driving portion to achieve optical focusing.

13. The retractable lens according to claim 12, wherein a bottom surface of the second driving portion is always kept at a distance from a top surface of the second lens part in an optical axis direction of the optical lens in an operating state and a non-operating state of the retractable lens.

14. The retractable lens according to claim 12, wherein the eject mechanism includes a first elastic member having a hollow structure inside and a support rod accommodated in the hollow structure of the first elastic member, wherein in a non-operating state of the retractable lens, the first elastic member of the at least one eject mechanism is compressed between a first lens component and a second lens component, wherein the first elastic member is configured as a coil spring, and the support rod is inserted in the coil spring.

15. The retractable lens according to any one of claims 10 to 14, wherein the first driving portion further comprises a stopper mechanism including a first stopper fixing portion provided on a fixing base of the first driving portion and a second stopper movable portion fixedly connected with the fixing carrier of the second driving portion.

16. The retractable lens according to claim 15, wherein the first stopper fixing portion of the stopper mechanism has at least one first stopper that restricts movement of the second stopper movable portion of the stopper mechanism toward the object side in the optical axis direction of the optical lens, wherein the second stopper movable portion of the stopper mechanism includes a stopper movable portion main body, at least one stopper movable portion stay extending from an outer side wall of the stopper movable portion main body toward the object side in the optical axis direction of the optical lens, and a stopper movable portion through-hole provided in a middle portion of the stopper movable portion main body, wherein a size of the stopper movable portion through-hole is larger than a diameter of a bottom portion of the first lens member so that the first lens member can move in the optical axis direction of the optical lens within the stopper movable portion through-hole, wherein the stopper mechanism is provided between the movable sleeve of the first driving portion and the second driving portion in a projection plane perpendicular to the optical axis of the optical lens.

17. The retractable lens according to claim 15 or 16, wherein the second driving element of the second driving portion is configured as a voice coil motor including a focusing magnet and a focusing coil provided on a movable carrier and a fixed carrier of the second driving portion, respectively.

18. The retractable lens according to claim 17, wherein the second driving portion further comprises a magnetic attracting member having a magnetic attracting magnet and a first yoke, wherein the magnetic attracting magnet is disposed opposite to the first yoke and is disposed on the movable carrier and the fixed carrier of the second driving portion, respectively, wherein the magnetic attracting magnet of the magnetic attracting member of the second driving portion is disposed between the two focusing magnets, and the first yoke is disposed between the two focusing coils, as seen in a circumferential direction around an optical axis direction of the optical lens.

19. An imaging module comprising a photosensitive assembly and a retractable lens according to any one of claims 1 to 18, wherein the retractable lens is disposed in a photosensitive path of the photosensitive assembly such that light reflected by an object is imaged on the photosensitive assembly after passing through the retractable lens.

20. The camera module of claim 19, wherein the photosensitive assembly further comprises a third driving portion adapted to drive the photosensitive chip to translate, rotate or tilt, thereby implementing an anti-shake function of the photosensitive chip of the camera module.