CN117008396A

CN117008396A - Telescopic lens and camera module with same

Info

Publication number: CN117008396A
Application number: CN202210466406.3A
Authority: CN
Inventors: 管敏; 郭美杉; 叶林敏; 王欣; 吴安安
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-07

Abstract

The invention provides a telescopic lens and an image pickup module with the telescopic lens, wherein the telescopic lens comprises an optical lens and a driving assembly, the optical lens comprises a first lens assembly and a second lens assembly, a lens gap with a variable interval is formed between the first lens assembly and the second lens assembly, the first lens assembly of the optical lens is in transmission connection with the driving assembly, the driving assembly drives the first lens assembly to move along the optical axis direction, so that the telescopic lens can be switched between an operating state and a non-operating state in an adjustable manner, and when the telescopic lens is in the operating state, the first lens assembly is driven to move along the direction of an object side, and the lens gap is increased; when the telescopic lens is in the non-working state, the first lens component is driven to move along the image side direction, so that the lens gap is reduced.

Description

Telescopic lens and camera module with same

Technical Field

The present invention relates to the field of camera modules, and more particularly, to a retractable lens and a camera module with the retractable lens.

Background

The size that current module of making a video recording is along with its imaging quality's continuous promotion sensitization chip constantly increases, and the height of module also constantly increases, when imaging in assembling terminal equipment with it, though jumbo size sensitization chip can promote imaging quality, can make the height increase of making a video recording the module, when installing terminal equipment with it in, its back can bulge terminal equipment shell certain height, when receiving external effort, its convex part is not only damaged easily, still can influence the aesthetic measure of its terminal product appearance, reduces user's experience and feels.

In order to reduce the overall height of the camera module while improving the imaging quality of the camera module, the camera module is suitable for the trend of developing the light and thin of terminal equipment, and in the prior art, a telescopic camera module structure exists, namely, a telescopic structure is arranged on an optical lens, when the camera module works, an optical lens is driven to be far away from a photosensitive chip through the telescopic structure, when the camera module does not work, the optical lens is enabled to be close to the photosensitive chip through the telescopic structure, the distance between the photosensitive chip and the optical lens is greatly compressed, and the structural design mode of the telescopic optical lens is used for matching with the photosensitive chip with a large size, so that the contradiction between the imaging quality and the module height can be solved.

However, since the optical lens needs to extend out of the housing of the terminal device in the imaging process, when the extending optical lens receives external force, such as beating, pressing and the like, the optical lens is extremely easy to damage, when the external force is large, the whole module structure is damaged, and normal operation of the terminal device cannot be ensured.

Disclosure of Invention

The invention 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 invention is to provide a retractable lens and an image capturing module with the retractable lens, wherein the retractable lens includes a CG (Cover Glass) retractable structure, and the image capturing module is protected in an inner space thereof by CG protection, so as to improve dustproof and waterproof performance of the image capturing module.

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

Another advantage of the present invention is to provide a retractable lens and an image capturing module with the retractable lens, wherein the retractable lens further includes an elastic mechanism, and the elastic mechanism is disposed between a first lens component and a second lens component of the optical lens, so as to drive the first lens component to pop up, so that the image capturing module obtains a larger focusing range.

Another advantage of the present invention is to provide a retractable lens and an image capturing module with the retractable lens, wherein the alignment degree of the CG during the retractable process is ensured by arranging guide rods on both sides of the module.

Another advantage of the present invention is to provide a retractable lens and an image capturing module with the retractable lens, wherein by using a stepper motor to drive a CG, sufficient working space is provided for the image capturing module when the stepper motor drives the CG to rise, and the height of the image capturing module is compressed when the stepper motor drives the CG to fall, thereby achieving miniaturization of the overall structure.

Another advantage of the present invention 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 invention is to provide a retractable lens and an image pickup module with the retractable lens, in which the optical lens is configured as a split type, so that the gap between the optical lenses can be greatly compressed in a non-working 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 appearance of the terminal is solved.

Another advantage of the present invention is to provide a retractable lens and an image capturing module with the retractable lens, in which the image quality of the image capturing module is improved while the overall structure is miniaturized by using the anti-shake mode of the chip and matching with the extension and retraction of CG.

According to one aspect of the present invention, a retractable lens of the present invention capable of achieving the foregoing and other objects and advantages includes:

the optical lens comprises a first lens component and a second lens component, wherein the first lens component is positioned on the light incident side of the second lens component; and

The driving assembly is connected with the first lens assembly, and the driving assembly drives the first lens assembly to move along the optical axis direction;

wherein the optical lens satisfies the following relation: MAXCT/TTL is more than or equal to 0.23 and less than or equal to 0.31; wherein MAXCT is the lens gap between the first lens component and the second lens component, and TTL is the total optical length of the optical lens in the working state.

According to an embodiment of the present invention, the optical lens satisfies the following relationship: F/FG1 is more than or equal to 1.0 and less than or equal to 1.3; -1.4.ltoreq.F/FG2.ltoreq.0.7; TTL/IMGH is less than or equal to 0.66 and less than or equal to 0.72; and (3) CTTL/IMGH is not more than 0.46 and not more than 0.56, wherein IMGH is the image height of the optical lens, CTTL is the total optical length of the optical lens in a non-working state, F is the focal length of the optical lens, FG1 is the focal length of the first lens assembly, and FG2 is the focal length of the second lens assembly.

According to an embodiment of the present invention, the optical lens satisfies the following relationship: f is more than or equal to 8.10 and less than or equal to 9.55; FG1 is more than or equal to 6.9 and less than or equal to 8.9; -11.6.ltoreq.FG2.ltoreq.6.4.

According to an embodiment of the present invention, the optical lens satisfies the following relationship: IMGH is more than or equal to 14.3 and less than or equal to 16.33; TTL is more than or equal to 10.00 and less than or equal to 11.70; CTTL is more than or equal to 7.45 and less than or equal to 9.00.

According to an embodiment of the present invention, the optical lens satisfies the following relationship: BFL is more than or equal to 0.65 and less than or equal to 0.95; HFOV is less than or equal to 40 and less than or equal to 80; 4.3.ltoreq.EPD.ltoreq.5.3, wherein BFL is the back focal length of the optical lens, HFOV is the horizontal viewing angle of the optical lens, EPD is the entrance pupil aperture of the optical lens.

According to an embodiment of the present invention, when the telescopic lens is in the working state, the lens gap range is 0.5mm-3.52mm in the working state; when in the non-working state, the lens clearance range is smaller than 0.2mm.

According to an embodiment of the invention, the first lens assembly comprises a plurality of lenses and the second lens assembly comprises a single lens.

According to an embodiment of the present invention, the optical lens system further includes an elastic mechanism, wherein the elastic mechanism is disposed between the first lens assembly and the second lens assembly, and the first lens assembly is driven by the elastic mechanism to move along the optical axis direction.

According to an embodiment of the present invention, the optical lens further includes a transparent cover plate, wherein the transparent cover plate is located on an object side of the optical lens and is movably connected to the driving component, and the driving component drives the transparent cover plate to move along the optical axis direction.

According to an embodiment of the present invention, the driving assembly includes a first driving portion and a second driving portion, the first driving portion is located outside the second driving portion, the light-transmitting cover plate is supported above the light incident side of the optical lens by the first driving portion, and the optical lens is drivingly disposed on the second driving portion.

According to an embodiment of the present invention, the driving assembly further includes a shift mechanism, wherein the shift mechanism is disposed between the first driving portion and the second driving portion, and the shift mechanism is connected to the elastic mechanism, and the shift mechanism is configured to restrict displacement of the first lens assembly in the optical axis direction.

According to an embodiment of the present invention, the driving assembly further includes a shift mechanism, wherein the shift mechanism is disposed between the second driving portion and the optical lens, and the shift mechanism is connected to the elastic mechanism, and the shift mechanism is configured to restrict displacement of the first lens assembly in the optical axis direction.

According to an embodiment of the invention, the conductive element is arranged inside the gear element, the conductive element comprising a conductive body and at least one conductive pillar, wherein the conductive pillar extends integrally upwards from the conductive body.

According to an embodiment of the present invention, the first driving part includes a first driving element, a movable sleeve, and a fixed base, wherein the driving element is disposed on the fixed base, the first driving element is in driving connection with the movable sleeve, and the movable sleeve is driven by the first driving element to move up and down along the optical axis direction.

According to an embodiment of the present invention, the first driving part further includes at least one guide member, wherein the at least one guide member is disposed at the fixed base along the direction of the optical axis, and the guide member includes a main guide bar and a sub guide bar, wherein the main guide bar and the sub guide bar are located at two diagonal positions of the fixed base.

According to another aspect of the present invention, there is further provided a retractable lens including:

the optical lens comprises a first lens component and a second lens component, wherein a lens gap with a variable interval size is formed between the first lens component and the second lens component;

the driving assembly is used for driving the first lens assembly to move along the optical axis direction, so that the telescopic lens can be adjustably switched between an operating state and a non-operating state;

When the telescopic lens is in the working state, the lens clearance range is 0.5mm-3.52mm in the working state; when in the non-working state, the lens clearance range is smaller than 0.2mm.

According to another aspect of the present invention, there is further provided an image capturing module including:

the retractable lens as described above; and

the telescopic lens is arranged on a photosensitive path of the photosensitive assembly.

Further objects and advantages of the present invention will become fully apparent from the following description and the accompanying drawings.

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

Drawings

Fig. 1 is a schematic diagram of an overall structure of an image capturing module according to a first preferred embodiment of the present invention.

Fig. 2A is a schematic cross-sectional view of the camera module according to the first preferred embodiment of the present invention in an operating state.

Fig. 2B is a schematic cross-sectional view of the camera module in a standby state according to the first preferred embodiment of the present invention.

Fig. 3 is an exploded view of the camera module according to the first preferred embodiment of the present invention.

Fig. 4 is an exploded view of a first driving assembly of the retractable lens of the camera module according to the first preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a movable sleeve of the retractable lens of the camera module according to the first preferred embodiment of the present invention.

Fig. 6 is an exploded view of the driving assembly of the retractable lens of the camera module according to the first preferred embodiment of the present invention.

Fig. 7A is a schematic diagram of the driving assembly of the camera module according to the first preferred embodiment of the present invention, wherein the camera module is in an operating state.

Fig. 7B is a schematic diagram of the driving assembly of the camera module according to the first preferred embodiment of the present invention, wherein the camera module is in a standby state.

Fig. 8 is a schematic overall structure of an image capturing module according to a second preferred embodiment of the present invention.

Fig. 9A is a schematic cross-sectional view of the camera module according to the second preferred embodiment of the present invention in an operating state.

Fig. 9B is a schematic cross-sectional view of the camera module in a standby state according to the second preferred embodiment of the present invention.

Fig. 10 is an exploded view of the camera module according to the second preferred embodiment of the present invention.

Fig. 11A and 11B are schematic views illustrating a driving state of a second driving assembly of the camera module according to the second preferred embodiment of the present invention.

Fig. 12A and 12B are schematic structural views of an optical lens of the camera module according to the above preferred embodiment of the invention.

Fig. 13A and 13B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 13A shows the optical lens structure of the image capturing module in the working state, and fig. 13B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 14A and 14B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 14A shows the optical lens structure of the image capturing module in the working state, and fig. 14B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 15A and 15B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 15A shows the optical lens structure of the image capturing module in the working state, and fig. 15B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 16A and 16B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 16A shows the optical lens structure of the image capturing module in an operating state, and fig. 16B shows the optical lens structure of the image capturing module in a non-operating state.

Fig. 17A and 17B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 17A shows the optical lens structure of the image capturing module in the working state, and fig. 17B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 18A and 18B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 18A shows the optical lens structure of the image capturing module in the working state, and fig. 18B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 19A and 19B are schematic views of an alternative implementation of the optical lens of the image capturing module according to the above preferred embodiment of the present invention, where fig. 19A shows the optical lens structure of the image capturing module in the working state, and fig. 19B shows the optical lens structure of the image capturing module in the non-working state.

Fig. 20 is a schematic structural diagram of an electronic device to which the camera module of the present invention is applied.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

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. In order to solve the problem, the invention provides a CG telescopic lens, namely when an image pickup module is in a working state, the CG is extended out by a telescopic structure, 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.

According to the above analysis requirements, the present invention provides a CG telescopic lens and an imaging module with the CG telescopic lens, where the imaging module includes:

the transparent cover plate covers the upper end face of the optical lens, and the gap between the transparent cover plate and the optical lens can be changed;

The optical lens comprises a first lens component and a second lens component, wherein a gap exists between the first lens component and the second lens component, and the first lens component and the second lens component can form an optical system;

the photosensitive assembly comprises a circuit board, a photosensitive chip, an electronic element and a light filtering element, wherein the photosensitive chip is fixed on the upper surface of the circuit board and is communicated with the circuit board, the electronic elements are distributed on the side edge of the photosensitive chip, the electronic elements and the connecting part of the photosensitive chip and the circuit board are molded through a molding process, the upper end face of a formed molding seat is provided with a light filtering element mounting position, namely, the molding seat molds the electronic elements in the molding seat, and the integral height of the photosensitive element can be effectively reduced.

The first driving part comprises a driving shell, a first driving element, a movable sleeve, a guide member, a first sensing assembly and a fixed base, wherein the first driving element can be a stepping motor;

The second driving part comprises a second driving element, a transmission mechanism and a telescopic structure, wherein the second driving element can be one type of AF motor and is fixed with the optical lens, and the transmission mechanism is positioned on the upper end surface of the second driving element and is mainly used for realizing focusing in the shooting process so as to prevent the optical lens from excessively moving.

The third driving part is mainly a photosensitive chip anti-shake component and comprises a chip anti-shake fixing part, a chip anti-shake movable part and a driving piece SMA, wherein the chip anti-shake movable part is connected with the photosensitive component, and when the photosensitive chip movable part moves relative to the fixing part, the photosensitive chip can be driven to move, so that the anti-shake function of the photosensitive chip is realized.

The elastic mechanism comprises a spring and a guide rod, wherein the spring is positioned between the two lens assemblies, is sleeved outside the supporting rod, and provides acting force of the mutual principle of the two lens assemblies while supporting the two lens assemblies.

The magnet corresponds to the elastic mechanism, so that the influence of motion on resonance of the elastic member when the elastic member is driven externally can be reduced, and the simple harmonic vibration of the elastic member is reduced.

According to the CG telescopic lens designed by the application, the CG cover plate is driven by the stepping motor to stretch along the optical axis direction, and the CG cover plate is matched with the elastic component and the support rod which are arranged between the optical lenses, when the module is in a working state, the CG is driven by the stepping motor to rise along the optical axis direction, and the distance between the optical lenses is increased under the action of the elastic component so as to meet the TTL requirement of imaging; after shooting is completed, the stepping motor drives the CG to move along the direction opposite to the optical axis, so that the CG compresses the distance between the first lens assembly and the second lens assembly, the CG returns to an initial state, the whole height is kept to be reduced, and a shooting process is realized.

In a specific shooting process, when the TTL of the optical lens meets the imaging requirement of a large-size chip, in order to further improve the imaging quality, a second driving element arranged on the optical lens, namely an AF motor, is utilized to realize focusing, so that a shot photo is clearer; the shake in the photographing process is corrected by using a third driving element, i.e., a chip anti-shake motor, provided at the end of the photosensitive chip, and a high-quality photographing process has been completed. Namely, the CG telescopic lens provided by the proposal solves the contradiction between the large-size chip and the height of the module by utilizing the first driving element, so that the whole module can keep miniaturized; the second driving element is used for solving the focusing position in the imaging process of the large-size chip, only part of the optical lens is driven to focus, the driving force requirement is reduced, and meanwhile the shooting definition problem is solved; the anti-shake problem of the large-size chip is solved by utilizing the third driving element, and the driving element is only arranged at the photosensitive chip end of the camera module, so that the camera module only drives the photosensitive chip to move, and the anti-shake is realized relative to the whole optical lens, so that the anti-shake requirement can be met under the condition of providing smaller driving force, and the miniaturization can be realized.

Therefore, the CG telescopic lens provided by the application can provide a better solution application for imaging of a large-size chip, and accords with the development trend of the current camera module.

It should be noted that, in the present application, the optical lens satisfies the following relationship: MAXCT/TTL is more than or equal to 0.23 and less than or equal to 0.31; wherein MAXCT is the lens gap between the first lens component and the second lens component, and TTL is the total optical length of the optical lens in the working state.

According to at least one embodiment of the present application, the optical lens satisfies the following relationship: F/FG1 is more than or equal to 1.0 and less than or equal to 1.3; -1.4.ltoreq.F/FG2.ltoreq.0.7; TTL/IMGH is less than or equal to 0.66 and less than or equal to 0.72; and the refractive power of the first lens component and the second lens component can be adjusted, so that excessive spherical aberration and other aberration can be avoided when the total length is compressed.

According to at least one embodiment of the present application, the optical lens satisfies the following relationship: f is more than or equal to 8.10 and less than or equal to 9.55; FG1 is more than or equal to 6.9 and less than or equal to 8.9; -11.6. Ltoreq.FG2. Ltoreq.6.4, whereby the field of view range can be adjusted.

According to at least one embodiment of the present application, the optical lens satisfies the following relationship: IMGH is more than or equal to 14.3 and less than or equal to 16.33; TTL is more than or equal to 10.00 and less than or equal to 11.70; CTTL is more than or equal to 7.45 and less than or equal to 9.00, thereby reducing the overall height of the module.

According to at least one embodiment of the present application, the optical lens satisfies the following relationship: BFL is more than or equal to 0.65 and less than or equal to 0.95; and HFOV is less than or equal to 40 and less than or equal to 80, wherein BFL is the back focal length of the optical lens, HFOV is the horizontal viewing angle of the optical lens, EPD is the entrance pupil aperture of the optical lens, and therefore the viewing angle of the lens group can be effectively controlled to obtain more image information.

According to at least one embodiment of the present application, the optical lens satisfies the following relationship: 4.3.ltoreq.EPD is less than or equal to 5.3, wherein EPD is the entrance pupil aperture of the optical lens, thereby improving the light absorption capacity of the optical lens group and enabling the photographed image to be clearer.

Referring to fig. 1 to 7B of drawings of the present specification, a retractable lens and an image pickup module with the retractable lens according to a first preferred embodiment of the present application are explained in the following description. The camera module comprises a telescopic lens 100 and a photosensitive assembly 200, wherein the telescopic lens 100 is arranged on a photosensitive path of the photosensitive assembly 200. The retractable lens 100 includes a transparent cover 10, an optical lens 20, and a driving assembly 30, wherein the transparent cover 10 is CG (cover glass) of the present application disposed on an upper end surface of the optical lens 20, and is mainly used for protecting the optical lens 20 and for passing light. The transparent cover plate 10 and the optical lens 20 are disposed at the driving unit 30, and the movement of the transparent cover plate 10 and the optical lens 20 is driven by the driving unit 30.

In detail, the camera module has a working state and a standby state, when the camera module is in the working state, the driving assembly 30 drives the transparent cover plate 10 to move upwards along the optical axis direction of the optical lens 20, so that a space cavity 102 with a variable distance is formed between the transparent cover plate 10 and the optical lens 20, and a larger zooming or focusing space of the optical lens 20 is provided; when the camera module is in the standby working state, the driving assembly 30 drives the transparent cover plate 10 to move downwards along the optical axis direction, so as to reduce the size of the spacing cavity 102 between the transparent cover plate 10 and the optical lens 20, thereby reducing the size of the camera module in the height direction, and being beneficial to miniaturization of the overall size of the camera module.

In other words, the transparent cover plate 10 is supported above the optical lens 20 by the first driving part 31, and the transparent cover plate 10 may be driven in the optical axis direction by the first driving part 31 such that the spacing cavity 102 having a variable distance is formed between the transparent cover plate 10 and the optical lens 20 in order to adjust the focal length of the optical lens 20.

The driving assembly 30 includes a first driving part 31 and a second driving part 32, wherein the first driving part 31 is connected to the transparent cover plate 10, and the transparent cover plate 10 is driven to move up and down along the optical axis direction by the first driving part 31. The second driving part 32 is connected to the optical lens 20, and the second driving part 32 drives the optical lens 20 to realize zooming or focusing.

In short, the CG is provided to the first driving portion 31, and the first driving portion 31 is mainly for driving the CG to move up and down in the optical axis direction to achieve compression of the distance between the optical lens 20 and the photosensitive member 200. The second driving part 32 is disposed inside the first driving part 31, which may be one type of AF motor, and the second driving part 32 is disposed at a side surface of the optical lens 20, mainly for achieving focusing of the optical lens 20 during photographing, so as to obtain a clear image.

In the preferred embodiment of the present invention, the camera module can be applied to electronic devices such as mobile phones, computers, tablet computers, and the like as a tele camera module. When carrying out automatic focusing, the current VCM motor can't satisfy the demand of module automatic focusing stroke of making a video recording, and current step motor is nevertheless can satisfy the demand of module stroke of making a video recording, but because its step angle is great restriction relatively, causes its precision not enough for the module of making a video recording moves the stroke not accurate enough when only realizing automatic focusing through step motor, can't realize clear formation of image. The optical lens 20 is thus driven in stages by the first driving part 31 and the second driving part 32 in the preferred embodiment of the present invention to meet the demands of the stroke and precision of the auto-focusing or focusing of the camera module.

The first driving part 31 can generate a larger driving stroke, so that the requirement of the automatic focusing stroke of the camera module is met, and the primary focusing of the camera module is realized through the first driving part 31; the second driving part 32 has higher precision, can provide more accurate driving stroke, and realizes accurate focusing of the camera module through the second driving part 32, so that a shot object can be clearly imaged on the photosensitive assembly. In the preferred embodiment of the present application, the first driving element of the first driving part 31 may be a piezoelectric motor or a motor with a larger driving stroke such as a stepping motor; the second driving element in the second driving portion 32 may be a motor with higher precision, such as a VCM motor, a memory alloy motor, etc., which is not limited by the present application. As shown in fig. 2A to 6, the first driving part includes a driving housing 311, a first driving element 312, a movable sleeve 313, a waterproof and dustproof cover 314, a guiding member 315, a first sensing assembly, a fixed base 317, and a first electrical connection portion. The driving housing 311 is disposed at a side of the fixing base 317, and forms an accommodating space with the fixing base 317, where the accommodating space is used for accommodating other components in the camera module therein, so as to enhance the overall structural stability and protect the internal components.

The first driving member 312 is provided to the fixed base 317, and drives the movable sleeve 313 to move in the accommodation space in the optical axis direction; the fixing base 317 includes a fixing base body, and a base through hole is formed in a middle portion of the fixing base body, and the second lens assembly 22 is received in the base through hole and is fixed to an inner sidewall of the base through hole by the second lens barrel 221 of the second lens assembly 22. The first driving member 312 is drivingly connected to the movable sleeve 313, and the movable sleeve 313 is driven to move up and down in the optical axis direction by the first driving member 312. The transparent cover plate 10 is disposed at the top end of the movable sleeve 313 and moves with the movable sleeve 313. The first driving element 312 is disposed on the fixed base 317, and the first driving element 312 drives the movable sleeve 313 to move up and down with the fixed base 317 as a support. It should be noted that, the movable sleeve 313 is sleeved on the outer side of the optical lens 20, and when the camera module is in the working state, the first driving element 312 drives the transparent cover 10 to move upwards through the movable sleeve 313, so that a gap between the lower surface of the transparent cover 10 and the upper end surface of the optical lens 20 is increased.

In the preferred embodiment of the present invention, the first driving member 312 is mainly used to drive CG up/down in the optical axis direction, and may be one of a piezoelectric motor or a stepping motor. Preferably, in the preferred embodiment of the present invention, the first drive element 312 is a stepper motor driven drive assembly.

In detail, the first driving element 312 includes a driving mechanism 3121 and a transmission mechanism 3122, wherein the transmission mechanism 3122 is drivingly connected to the driving mechanism 3121 and the movable sleeve 313, the transmission mechanism 3122 is driven by the driving mechanism 3121, and the movable sleeve 313 is driven to move up and down in the optical axis direction by the transmission mechanism 3122. It should be noted that in the preferred embodiment of the present invention, the first driving element 312 is a stepper motor.

More preferably, the transmission 3122 is a geared screw transmission. The transmission mechanism 3122 further includes a first gear 31221, a second gear 31222, and a transmission screw 31223, wherein the first gear 31221 and the second gear 31222 are pivotably disposed to the fixed base 317. The first gear 31221 is disposed on the first driving element 312, and the first gear 31221 may be synchronously rotated with the first driving element 312, the first gear 31221 and the second gear 31222 are engaged, one end of the driving screw 31223 is fixed to the second gear 31222, and the other end of the driving screw 31223 is drivingly connected with the movable sleeve 313. When the camera module is in the working state, the first driving element 312 drives the first gear 31221 to rotate, and the second gear 31222 drives the driving screw 31223 to move under the action of the first gear 31221, wherein the driving screw 31223 is pivotally connected to the movable sleeve 313 in a driving manner, and the driving screw 31223 drives the movable sleeve 313 to move in parallel along the optical axis direction.

It should be noted that, the driving mechanism 3121 in the stepper motor controls the pitch angle of the stepper motor by controlling the electric pulse signal applied to the motor coil (the angle through which the rotor rotates per input of one pulse electric signal is called a floating angle); after the electric pulse signal is provided to the driving mechanism 3121 of the stepper motor, the first gear 31221 disposed on the driving device will rotate therewith, and the engagement between the first gear 31221 and the second gear 31222 drives the second gear 31222 to rotate, so that the driving screw 31223 can be meshed with the second gear 31222, and the force on the driving device can be transmitted to the driving screw 31223.

The first driving element 312 is fixed to one side of the fixed base 317, and the first driving element 312 has a driving screw mechanism built therein, wherein the driving screw mechanism 312 of the first driving element 312 is fixedly connected with the first gear 31221.

The movable sleeve 313 includes a sleeve main body 3131, a sleeve movable portion 3132, a sleeve supporting portion 3133, and a sleeve protrusion 3134, wherein an opening is provided on an upper surface of the sleeve supporting portion 3133, the transparent cover plate 10 is disposed at the opening, and the sleeve movable portion 3132 moves along a guide rod direction parallel to the optical axis, is sleeved on the driving screw 31223 of the driving mechanism 3122, and is connected to the driving screw 31223.

When the stepping motor works, the gear device is driven to rotate, so that the gear drives the sleeve movable part 3132 to move, and when the sleeve movable part 3132 moves up and down along the guide rod, the transparent cover plate 10 fixed at the opening of the upper surface of the supporting part is also driven to move up and down along the optical axis direction, so that the telescopic movement of the optical lens 20 is realized. Meanwhile, on the inner side wall corresponding to the opening of the sleeve movable portion 3132, a corresponding sleeve protrusion 3134 is provided, that is, extends downward by a certain height along the direction of the optical axis.

As shown in fig. 2A to 6, the sleeve movable portion 3132 is located on the circumferential side of the sleeve main body 3131, which corresponds to the position of the driving mechanism 3121, and the sleeve movable portion 3132 is provided with a thread groove corresponding to the drive screw 31223. The sleeve support 3133 is located at an intermediate position of the sleeve body 3131, wherein the sleeve support 3133 supports the transparent cover 10 and maintains the transparent cover 10 in an optical path of the optical lens 20. The sleeve support 3133 is provided with a light entrance portion, wherein the transparent cover plate 10 is fixed to the light entrance portion of the sleeve support 3133 by the sleeve support 3133. The sleeve protrusion 3134 is located at a lower end of the sleeve support 3133, and the sleeve protrusion 3134 integrally extends downward from the sleeve support 3133.

The movable sleeve 313 moves relative to the driving housing 311 along the direction of the optical axis under the action of the stepping motor, so that a gap exists between the movable sleeve 3132 and the driving housing 311 in order to prevent external dust from entering the inside of the module from the gap, and the imaging quality of the module is affected, the first driving portion 30 further comprises a waterproof and dustproof cover 314, the waterproof and dustproof cover 314 is made of a flexible rubber material, one end of the waterproof and dustproof cover 314 is arranged on the driving housing 311, the other end of the waterproof and dustproof cover is connected with the movable sleeve 3132, and when the movable sleeve 3132 moves relative to the driving housing 311, the waterproof and dustproof cover 314 can seal the gap between the movable sleeve 3132 and the movable sleeve to prevent external dust from entering the inside of the module.

To further secure the degree of collimation in which the driving mechanism 3121 drives the sleeve movable portion 3132 to move in the optical axis direction, that is, such that the direction of movement is parallel to the optical axis direction. The first driving part 31 further includes at least one guide member 315, wherein the at least one guide member 315 is disposed on the fixing base 317 along the direction of the optical axis, which is located at opposite corners of the fixing base 317. Preferably, in the preferred embodiment of the present invention, the guide member 315 includes a main guide bar 3151 and a sub guide bar 3152, wherein the main guide bar 3151 is used to ensure alignment during movement so that the driving mechanism 3121 drives the sleeve to move along the direction of the optical axis, and the sub guide bar 3152 is used to prevent rotation during movement of the sleeve, i.e. further ensure alignment during lifting of the sleeve. The main guide bar 3151 and the sub guide bar 3152 of the guide member 315 are located at two diagonal positions of the fixed base 317, and the moving direction of the movable sleeve is guided by the guide member 315.

Further, in order to sense the position of the sleeve movable portion 3132, to improve the accuracy of adjusting the transparent cover plate 10, the first driving portion 31 further includes at least one first sensing component, wherein the first sensing component is disposed on the movable sleeve 313, and the moving position of the movable sleeve 313 is sensed by the first sensing component. The first sensing component further comprises a first position sensing magnet and a first position sensing element, wherein the first position sensing magnet is arranged on the sleeve movable part 3132 and is arranged on the side surface of the sleeve movable part 3132, the first position sensing element is arranged at a position corresponding to the first position sensing magnet, and the position of the sleeve movable part 3132, namely the position of the transparent cover plate 10 in the optical axis direction, is accurately sensed by sensing the position of the magnet.

The first driving part 31 further comprises a first electrical connection for mainly energizing the driving mechanism 3121 and the sensing element, which cooperates with other wires inside the module for providing the operation current of the stepper motor. When the first electrical connection part is electrified for shooting, the stepping motor drives the sleeve movable part 3132 to ascend along the direction of the optical axis, namely the transparent cover plate 10; when the photographing process is completed, the stepping motor drives the sleeve movable part 3132 to descend in a direction opposite to the optical axis, i.e., drives the transparent cover plate 10 to descend so as to return to an initial state, so that the overall height is lowered.

Preferably, in the preferred embodiment of the present invention, the first electrical connection part may be integrally formed on the fixing base 317 by Insert molding technology (Insert injection molding), and is conducted to the exterior of the retractable lens by the fixing base 317; or an LDS groove may be provided on the surface of the fixing base 317, and an LDS (laser direct structuring) is used to conduct in the groove; or the first electrical connection portion may extend downward to the circuit board of the photosensitive assembly 200, and be conducted through the circuit board of the photosensitive assembly 200, which is not limited thereto.

As shown in fig. 2A and 2B, the optical lens 20 is a split optical lens, and includes a first lens component 21 and a second lens component 22, where the first lens component 21 is located on the light incident side of the second lens component 22. The first lens component 21 includes a first lens barrel 211 and at least one first lens group 212, the second lens component 22 includes a second lens barrel 221 and at least one second lens group 222, wherein a lens gap 23 exists between the first lens group 212 and the second lens group 222, and the two lens components can form an integral optical imaging system. Preferably, in the preferred embodiment of the present invention, the lens gap 23 between the first lens group 21 and the second lens group 22 ranges from 0.5mm to 3.52mm in an operating state and is smaller than 0.2mm in a standby state, so that the first lens group 21 has sufficient space to be movable in the optical axis direction with respect to the second lens group 22. More preferably, in the preferred embodiment of the present invention, the second lens assembly 22 is a fixed focus lens, and the first lens assembly 21 is driven to move up and down along the optical axis direction.

Preferably, the size of the first lens assembly 21 is smaller than the size of the second lens assembly 22. Specifically, the maximum diameter size of the first lens component 21 is 9.0mm-11.0mm, and the maximum diameter size of the second lens component 22 is 16.5mm-18.5mm; the second driving part 32 is disposed on the outer peripheral sides of the first lens assembly 21 and the second lens assembly 22, and drives the first lens assembly 21 to move along the optical axis direction, thereby realizing precise focusing. It should be noted that the lens gap 23 between the first lens component 21 and the second lens component 22 is adjustable, when the lens gap 23 between the two lens components is adjusted to meet the TTL requirement of imaging, when the lens gap 23 between the two lens components is in a standby working state, the lens gap 23 between the two lens components is compressed, so that the overall structure height is reduced.

In order to adjust the lens gap 23 between the first lens component 21 and the second lens component 22, the telescopic lens 100 further comprises at least one elastic mechanism 40, wherein the at least one elastic mechanism 40 is disposed between the first lens component 21 and the second lens component 22, and the at least one elastic mechanism 40 drives the first lens component 21 to move, so that the lens gap 23 between the first lens component 21 and the second lens component 22 is prolonged to meet the optical requirement of the camera module.

In the working state, the first lens assembly 21 extends out along the optical axis direction through the elastic mechanism 40, so as to increase the distance between the first lens assembly 21 and the second lens assembly 22, and meet the TTL requirement required by imaging of the large-size photosensitive chip; in the standby state, the first lens assembly 21 is retracted in the optical axis direction by the driving assembly 30 to reduce the distance between the first lens assembly 21 and the second lens assembly 22, so that the height of the image pickup module in the non-operating state is reduced.

It will be appreciated that in this preferred embodiment of the invention, the first driving portion 31 is provided on the side of the optical lens 20 and abuts against the optical lens 20. When in the standby state, the first driving portion 31 is driven downward in the optical axis direction, the first lens assembly 21 is driven to move toward the image side in the optical axis direction by a portion abutting against the optical lens 20 to reduce a lens gap between the first lens assembly and the second lens assembly, and the spring is compressed between the first lens assembly 21 and the second lens assembly 22; when the first driving part 31 moves upward in the optical axis direction in the operating state, the first lens assembly 21 moves toward the object side in the optical axis direction under the action of the elastic mechanism 40 to increase the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 while the optical lens 20 loses the pressure of the first driving part 31; the second driving part 32 cooperates with the elastic mechanism 40 to realize movement of the first lens assembly 21 in the optical axis direction; the second driving portion 32 is disposed at the inner side of the first driving portion 31, and can drive the first lens assembly 21 to move continuously along the optical axis direction, so as to achieve precise focusing of the telescopic module.

Each of the elastic mechanisms 40 further includes a guide rod 41 and a spring 42, wherein the guide rod 41 is fixedly provided to the second barrel 221 of the second lens part 22, and the spring 42 is telescopically provided to the guide rod 41. One end of the guide bar 41 is fixed to one side of the second barrel 221 of the second lens part 22, and the other end of the guide bar 41 extends upward from the second lens part 22.

Preferably, in the preferred embodiment of the present invention, the number of the elastic mechanisms 40 is at least two, and the elastic mechanisms 40 are uniformly and symmetrically arranged at the second barrel 221 of the second lens part 22.

When the optical lens 20 images, the acting force arranged on the upper end surface of the optical lens 20 is released, and the first lens assembly 21 moves relative to the second lens assembly 22 under the action of the elastic mechanism 40, so that the distance between the first lens assembly and the second lens assembly meets the TTL requirement when a large-size chip images. When the lens is in a standby operation state, a force is applied to the upper end surface of the optical lens 20, and the elastic force between the first and second lens components is overcome, so that the lens is compressed to a state before imaging, thereby reducing the height of the whole lens, and keeping the whole structure miniaturized.

Further, when the optical lens 20 rises in the optical axis direction by the urging force of the elastic mechanism 40, it rises to some extent, abuts against the sleeve protrusion 3134, thereby restricting excessive movement of the lens, and when the lens is retracted to the initial state, the urging force is again applied to the upper end surface of the optical lens 20 through the sleeve protrusion 3134, so that the lens gap 23 between the first lens part 21 and the second lens part 22 is reduced, returning to the state of small height.

That is, when the camera module is in the working state, the transparent cover 10 is driven by the movable sleeve 313 to move upwards by the first driving part 31, so that the distance between the lower end of the transparent cover 10 and the upper end of the optical lens 20 is increased, so as to adjust the focal length of the optical lens 20. The optical lens 20 moves upward in the optical axis direction by the elastic record 40, and the lens gap 23 between the first lens part 21 and the second lens part 22 is increased, further adjusting the focal length of the optical lens 20. When the first lens part 21 of the optical lens 20 moves upward to some extent, the upper end of the first lens part 21 abuts against the sleeve protrusion 3134. Accordingly, the lower end surface of the sleeve protrusion 3134 corresponds at least partially to the first barrel 211 of the first lens part 21, whereby the sleeve protrusion 3134 limits the moving distance of the first lens part 21, thereby preventing the first lens part 21 from transitionally moving.

In the standby state, the sleeve protrusion 3134 and the second driving part 32 remain in contact with each other, or the sleeve protrusion 3134 is in contact with the upper end of the first lens assembly 21. Preferably, in the preferred embodiment of the present invention, in the standby state, the sleeve protrusion 3134 is pressed against the upper end of the first lens assembly 21, presses the elastic mechanism 40 downward through the first lens assembly 21, and maintains the spring 42 of the elastic mechanism 40 in a compressed state. The first driving element 31 drives the movable sleeve 313 to move downwards along the optical axis direction, and the sleeve protrusion 3134 abuts against the first lens barrel 211 of the first lens assembly 21, so as to drive the second driving part 32 and the first lens assembly 21 to move downwards, and reduce the lens gap 23 between the first lens assembly 21 and the second lens assembly 22. Accordingly, in the working state, the first driving element 31 drives the movable sleeve 313 to move upwards along the optical axis direction, the pressure generated by the abutment of the sleeve protrusion 3134 on the first lens assembly 21 is cancelled, and the spring 42 drives the first lens assembly 21 to move upwards along the optical axis direction through the elastic force thereof, so that the first lens assembly 21 pops up for preliminary focusing.

When the camera module is switched from the operating state to the standby operating state, the first driving part 31 of the camera module drives the transparent cover plate 10 and the optical lens 20 to synchronously move downwards. The first driving element 312 of the first driving portion 31 drives the transparent cover plate 10 to move downward along the optical axis direction through the movable sleeve 313, wherein the movable sleeve 313 is that the lower end of the sleeve protrusion 3134 is pressed against the upper end surface of the optical lens 20, and drives the first lens component 21 of the optical lens 20 downward through the sleeve protrusion 3134, and the elastic mechanism 40 is compressed, thereby reducing the lens gap 23 between the first lens component 21 and the second lens component 22.

The spring 42 is hollow, is sleeved outside the guide rod 41, and is supported by the guide rod 41 to support the spring 42. The height and shape of the guide bar 41 are fixed, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is compressed when the retractable lens is in a standby state, and the spring 42 is in a compressed state; when the telescopic lens is in an operating state, the lens gap 23 between the first lens component 21 and the second lens component 22 is stretched, and the spring is in a released state. It will be appreciated that when the spring 42 is compressed or ejected to deform, the height and shape of the guide rod 21 will not change with the deformation of the elastic member, and this arrangement can limit the deformation direction of the spring 42 to the direction along the optical axis by the guide rod 41, thereby reducing the error generated when the spring 42 moves along the optical axis.

It should be noted that, the sleeve protrusion 3134 is used to abut against the upper end surface of the optical lens 20, so that a certain gap can be reserved for focusing the lens along the optical axis direction, and on the other hand, the sleeve protrusion 3134 can be used to play a role in buffering/anti-collision so as to prevent the lens from excessively moving under the action of the elastic mechanism 40, so as to avoid damaging the optical lens 20. In the preferred embodiment of the present invention, an iris 70 is further disposed on the end surface of the optical lens 20 and is sleeved on the upper end surface of the first lens assembly 21, the iris 70 includes an iris fixing portion, an iris blade, an iris driving portion and an iris electrical connection portion, the iris electrical connection portion is electrically connected to the outside, the iris blade is moved relative to the iris fixing portion by the effect of the iris driving portion, thereby changing the size of the aperture formed by the iris blade, and the amount of light passing into the optical lens 20 is adjusted by adjusting the size of the aperture covered on the optical lens 20, so as to compensate the amount of light entering the optical lens 20 required during near-focus shooting.

It should be noted that, in the first driving portion 31, the transparent cover plate 10 is driven to lift along the optical axis direction by the first driving element 312, and the lens gap 23 between the optical lenses 20 is adjusted by the elastic mechanism 40 between the split type optical lenses 20. In the standby operation state, the elastic mechanism 40 between the first lens part 21 and the second lens part 22 is in a compressed state, and when in the operation state, the first driving element 312 moves in the direction of the optical axis, so that the acting force applied to the end face of the optical lens 20 is reduced, the elastic force of the elastic mechanism 40 between the first lens part 21 and the second lens part 22 is released, and the lens gap 23 between the two optical lens 20 parts is pushed to increase to a TTL value satisfying imaging.

In the preferred embodiment of the present invention, the elastic mechanism 40 is a combination of a guide rod and a spring, and can provide an upward movement force of the lens while ensuring smooth movement of the lens. Since the sleeve protrusion 3134 can limit the movement of the optical lens 20, the excessive elastic force of the elastic mechanism 40 is prevented from affecting the imaging accuracy. The mode of combining the stepping motor with the elastic mechanism 40 to realize the extension and retraction of the camera module not only can solve the problem of high TTL of a large-size chip in imaging, but also can reduce the requirement on the driving force of the first driving element 312 by the arrangement of the elastic mechanism 40, and simplify the design of the whole driving structure. In the shooting process, the elastic mechanism 40 is used for adjusting the lens gap 23 between the first lens component 21 and the second lens component 22 to meet the TTL requirement of optical imaging, and the second driving part 32 is used for driving the optical lens 20 to move along the direction of the optical axis, so that a clearer image is obtained.

The first driving part 31 forms an external integral driving frame in which the main components imaged by the camera module are accommodated, and the second driving part 32, the elastic mechanism 40 and the iris 70 are also accommodated in the space of the first driving part 31.

The main driving element of the second driving part 32 is an AF motor, which can drive the optical lens 20 to move in the direction of the optical axis to achieve a focusing effect during photographing. The camera module further includes a third driving portion 60, wherein a main driving element of the third driving portion 60 is an OIS anti-shake component, which mainly drives the photosensitive chip to move along a direction perpendicular to the optical axis, so as to realize an anti-shake effect in the shooting process. Because of the limitation of the large-size chip, the corresponding optical lens 20 has a larger volume, if the traditional anti-shake method is adopted, that is, the corresponding anti-shake motor is arranged at the end of the optical lens 20, the driving force requirement for the driving motor is higher, the structural volume of the whole motor is increased, and the trend of miniaturization of the current module is not met, so that the anti-shake in shooting is realized by adopting the third driving part 60 in the preferred embodiment of the invention, and the miniaturization of the whole structure can be effectively realized.

In the shooting process, the gap between the first lens assembly 21 and the second lens assembly 22 is adjusted by using the elastic element so as to meet the TTL requirement of optical imaging, and meanwhile, the second driving part 32 is used for driving the optical lens to move along the direction of the optical axis, so that a clearer image is obtained.

In the working state, the first driving part 31 drives the transparent cover plate 25 to move upwards along the optical axis direction, and forms the interval cavity 102 with adjustable gap between the transparent cover plate 25 and the first lens assembly 21, so as to reserve enough activity space for the movement of the second driving part 32 for driving the optical lens 20. It should be noted that, in the preferred embodiment of the present invention, the transparent cover plate 10 is driven by a stepper motor to lift along the direction of the optical axis, the sleeve protrusion 3134 abutting against the upper end surface of the first optical lens 20 is matched with the elastic mechanism 40 between the first lens assembly 21 and the second lens assembly 22, so that the optical lens 20 moves upwards smoothly, and when the TTL to be imaged meets the imaging requirement of the large-size chip, the AF motor is used for focusing precisely.

In the focusing process, the elastic mechanism 40 drives the first lens assembly 21 to move under the driving action of elastic acting force, so that the first lens assembly 21 is separated from the second lens assembly 22, and a gap between the first lens assembly 21 and the second lens assembly 22 is increased, thereby realizing preliminary focusing of the camera module. And then the second driving portion 32 moves the optical lens 20, for example, the second driving portion 32 moves the first lens assembly 21 and/or the second lens assembly 22, so that the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is further adjusted, thereby realizing accurate focusing of the camera module, and being beneficial to improving the focusing accuracy and focusing speed of the camera module. It can be appreciated that, in the preliminary focusing process of the camera module, the elastic mechanism 40 drives the first lens assembly 21 to move, so that the movement speed is fast, and the preliminary focusing process can be realized as soon as possible. In the accurate focusing process of the camera module, the second driving part 32 moves the first lens assembly 21 and/or the second lens assembly 22 on the basis of preliminary focusing, so that the imaging accuracy of the camera module can be improved. Therefore, in the preferred embodiment of the present invention, the first lens assembly 21 is driven to move by the elastic mechanism 40 by moving the transparent cover plate 10 through a stepping motor, so that preliminary focusing is achieved, and then precise focusing is achieved by the second driving part 32, so that the optical lens 20 of the camera module can be smoothly moved, thereby improving overall accuracy.

The driving assembly 30 further comprises a transmission mechanism 33, wherein the transmission mechanism 33 is disposed between the second driving portion 32 and the optical lens 20, and is configured to limit displacement of the first lens assembly 21 in the optical axis direction. In detail, the gear transmission mechanism 33 is connected to the elastic mechanism 40 at an inner side of the second driving part 32, and the first lens assembly 21 is supported by the gear transmission mechanism 33 and moves up and down along with the gear transmission mechanism 33.

When the camera module is in the working state, the elastic mechanism 40 drives the first lens assembly 21 and the second lens assembly 22 to be separated through the gear transmission mechanism 33, so that the interval of the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is increased. When the first lens assembly 21 is separated from the second lens assembly 22, the shift mechanism 33 limits the displacement of the first lens enough time 21 to prevent the excessive spacing between the first lens assembly 21 and the second lens assembly 22.

The first lens assembly 21, the second lens assembly 22, the elastic mechanism 40 between the first lens assembly 21 and the second lens assembly 22, and the gear mechanism 33 for supporting and restraining the first lens assembly 21 are disposed inside the second driving portion 32. When the camera module is in a working state, the elastic mechanism 40 separates the first lens assembly 21 and the second lens assembly 22 by the transmission mechanism 33 to a larger interval, and then the second driving portion 32 (i.e. the AF motor) drives the optical lens 20 to further move along the optical axis direction, so as to accurately adjust the focal length of the optical system. It will be appreciated that in this preferred embodiment of the invention, the second driving portion 32 may be used to drive the first lens assembly 21 of the optical lens 20 or to drive the first lens assembly 21 and the second lens assembly 22 to move synchronously.

In the working state, since the elastic mechanism 40 and the second driving part 32 drive the optical lens 20 to move upward along the optical axis direction, when the optical lens 20 moves upward to a specific position, the upper end surface of the first lens assembly 21 of the optical lens 20 is pressed against the sleeve protrusion 3134 of the movable sleeve 313, and the movement of the optical lens 20 is restricted by the sleeve protrusion 3134.

Accordingly, the gear shifting mechanism 33 includes a gear element 331 and a conductive element 332, wherein the gear element 331 is fixed in position, the first lens assembly 21 is disposed on the conductive element 332, and the first lens assembly 21 can move synchronously with the conductive element 332. The gear member 331 cooperates with the conductive member 332 to limit movement of the second drive portion 32. In the preferred embodiment of the present invention, the gear element 331 may be fixedly disposed at an end portion of the second barrel 221 of the second lens assembly 22, wherein an inside of the gear element 331 is a hollow structure, and wherein the conductive element 332 is sleeved inside the gear element 331. The conductive element 332 is inside the gear element 331 and is telescopically movable up and down with respect to the gear element 331. The gear member 331 includes a gear body 3311 and at least one baffle 3312 extending integrally inward from the gear body 3311, wherein the baffle 3312 serves to block the conductive member 332 from moving upward.

The conductive element 332 is disposed inside the gear element 331, the conductive element 332 includes a conductive main body 3321 and at least one conductive support post 3323, and the conductive element 332 is further provided with a through hole 3322 and a conductive receiving cavity 3324 communicating with the through hole 3322, wherein the conductive support post 3323 integrally extends upward from the conductive main body 3321 and the conductive support post 3323 form the conductive receiving cavity 3324. A part of the first lens assembly 21 is disposed in the conductive housing 3324 of the conductive element 332, and the first lens assembly 21 can move synchronously with the conductive element 332. The through hole 3322 is formed at an intermediate position of the conductive body 3321, wherein the size of the through hole 3322 is larger than the diameter of the bottom of the first lens assembly 21 so that the first lens assembly 21 can move in the optical axis direction within the through hole 3322 without interference. The conductive support column 3323 extends upward in the height direction along the outer side wall of the conductive body and supports the second driving part 32 by the conductive body 3321.

It will be appreciated that the conductive element 332 is a supporting frame structure having an opening at an upper end, wherein the conductive element 332 is drivingly connected to the elastic mechanism 40, the elastic mechanism 40 transmits the force through the conductive element 332, and the conductive element 332 drives the second driving portion 32 to move upward along the optical axis direction.

Accordingly, the conductive member 332 is further provided with a plurality of guide grooves 3320, wherein the plurality of guide grooves 3320 correspond to the guide bar 41 of the elastic mechanism 40, and the guide bar 41 and the spring 42 of the elastic mechanism 40 are inserted into the guide grooves 3320 of the conductive member 332.

It should be noted that, in the preferred embodiment of the present invention, the groove structure of the baffle 3312 corresponding to the gear member 331 is formed between the conductive support posts 3323 of the conductive member 332, and when the conductive member 332 is driven to move up to a certain distance, the baffle 3312 of the gear member 331 blocks the conductive member 332 from moving up, limiting the moving distance of the conductive member 332 and thus limiting the moving distance of the second driving portion 32.

It should be noted that, since the elastic mechanism 40 is driven by the spring 42 as a driving force to move the first lens assembly 21, and when the camera module is in the standby state, the spring 42 of the elastic mechanism 40 is compressed by the first driving portion 31 through the transmission mechanism 33. It will be appreciated that when the elastic member is externally driven, the movement of the spring 42 is unstable due to simple harmonic vibration, thereby causing tilting or vibration of the first lens assembly 21 during movement.

The retractable lens 100 further includes at least one magnet 50, wherein the magnet 50 is aligned with the elastic mechanism 40, and the magnet 50 can reduce the influence of motion on the resonance of the elastic mechanism 40 when the lens is driven externally, that is, the simple harmonic vibration of the spring 42 is reduced by the magnet 50.

In this preferred embodiment of the present invention, the magnet 50 is provided to the movable sleeve 313 of the first driving part 31, and the magnet 50 can be moved synchronously with the movable sleeve 313. Therefore, the magnet 50 is located outside the elastic mechanism 40, and the expansion and contraction of the spring 42 are reduced by the magnet 50, which is a generated simple harmonic vibration.

As shown in fig. 3, the magnet 50 is provided at the bottom of the movable sleeve 313, that is, the magnet 50 is fixedly provided at the bottom of the sleeve body 3131 of the movable sleeve 313. Alternatively, in other alternative embodiments of the present invention, the magnet 50 is provided to the sleeve support 3133 of the movable sleeve 313, wherein the position of the magnet 50 corresponds to the position of each of the springs 42. Alternatively, in another alternative embodiment of the present invention, the magnet 50 is provided to the sleeve protrusion 3134 of the movable sleeve 313, and the position of the magnet 50 corresponds to the position of each of the springs 42.

The sleeve body 3131 has a lower end face 31311 and an inner side 31312. Preferably, in the preferred embodiment of the present invention, the magnet 50 is provided at the lower end surface 31311 of the sleeve body 3131, or the magnet 50 is attached to the inner side surface 31312 of the sleeve body 3131.

The magnet 50 may be, but is not limited to, a ring magnet, a bar magnet, a magnet block, or the like.

Preferably, in the preferred embodiment of the present invention, the magnet 50 is a ring-shaped magnet, wherein the magnet 50 is disposed along a lower end surface of the sleeve body 3131, and is attached, inlaid or fixed to the lower end surface 31311 of the sleeve body 3131 by means of adhesion. Alternatively, in another alternative embodiment of the present invention, the magnet 50 further includes a plurality of magnetic units 51, wherein the magnetic units 51 are disposed at a lower end of the sleeve body 3131 to be spaced apart from each other.

It should be noted that, in the preferred embodiment of the present invention, the magnet 50 is disposed at the lower end of the movable sleeve 313, so that the simple harmonic motion of the spring can be reduced, and the magnetic field generated by the magnet 50 does not affect other electronic components of the camera module, such as the magnetic components of the driving assembly 30.

That is, the magnet 50 cannot be located too close to the elastic mechanism 40, which would affect other electronic components or magnetic components in the camera module; the magnet 50 is also not positioned too far from the spring mechanism 40, otherwise the magnet 50 does not slow down the simple harmonic vibration of the spring 42.

Therefore, in the preferred embodiment of the present invention, the magnet 50 is located at the lower end of the sleeve body 3131 of the movable sleeve 313, so that the influence of the magnetic field generated by the magnet 50 on other electronic components or magnetic components can be avoided, and the influence of the movement of the spring 42 on the resonance of the spring when the spring 42 is driven by the acting force can be reduced by the magnet 50, so that the expansion and contraction process of the spring 42 is smoother, and the focusing of the camera module is more stable.

The second driving part 32 includes a second driving element 321, a movable carrier 322, a fixed carrier 323, and a second electrical connection part, wherein the optical lens 20 is fixed to the movable carrier 322, and the second driving element 321 is disposed between the movable carrier 322 and the fixed carrier 323. Preferably, in the preferred embodiment of the present invention, the second driving element 321 is an SMA element, and when the second driving element 321 is electrically connected to the power-on operation, the second driving element 321 drives the movable carrier 322 to move along the optical axis direction relative to the fixed carrier 323, so as to drive the optical lens 20 fixed thereto to move, so as to achieve the focusing effect of the optical lens 20 during the shooting process. Under the action of the elastic mechanism 40, the first lens assembly 21 is kept away from the second lens assembly 22, and the first optical lens 20 is clamped between the sleeve protrusion 3134 and the gear shifting mechanism 33 during the ascending along the optical axis direction, so that the flatness of the lens during the upward movement can be ensured, and the imaging precision is prevented from being influenced due to the inclination of the lens.

The second driving unit 321 includes two focusing coils and two focusing magnets, the focusing coils are disposed on the inner side wall of the housing of the second driving unit 321, and the focusing magnets are disposed on the fixed carrier 323 and are disposed opposite to the focusing coils. The movable carrier 322 includes at least four sides and at least four corners, and a cut edge is provided at least one corner, the second driving portion 32 is disposed inside the movable sleeve 313, and the size of the second driving portion 32 is mainly affected by the sizes of the fixed carrier 323 and the movable carrier 322. In the preferred embodiment of the present invention, the movable carrier 322 has a polygonal cross section, the movable sleeve 313 has a polygonal cross section and is circumscribed by a circle, and the smaller the number of sides of the movable carrier 322, the larger the size of the movable sleeve 313. It is therefore necessary to trim the movable carrier 322, thereby reducing the size of the movable sleeve and improving the utilization of the inside of the movable sleeve.

The first focusing magnet is disposed on a first side of the movable carrier 322, the second focusing magnet is disposed on a second side of the movable carrier 322, the first focusing coil is disposed on a first side of the fixed base 317, the second focusing coil is disposed on a second side of the fixed base 317, and the focusing coil and the focusing magnet are disposed opposite to each other.

The third driving part 60 includes a chip anti-shake fixing part, a chip anti-shake movable part, and a third driving element, wherein the third driving element is mainly used for driving the photosensitive chip to move along a direction perpendicular to the optical axis, so as to realize shake correction in the imaging process. The chip anti-shake movable part is fixed with the photosensitive chip, the third driving element is connected with the chip anti-shake fixed part and the movable part, and under the action of the third driving element, when the chip anti-shake movable part moves relative to the chip anti-shake fixed part, the photosensitive chip can be driven to correspondingly move, so that shake correction in the shooting process is realized.

The photosensitive assembly part 200 comprises a circuit board 70, a photosensitive chip 71, a color filter bracket 72, a color filter 73 and a third electric connection part, wherein the large-size photosensitive chip provided by the application is arranged on the upper surface of the circuit board 70 and is connected with the circuit board 70 in a conducting way, in order to further reduce the height of the photosensitive assembly part 200, the application adopts a mode of punching holes on the circuit board, and a supporting plate is arranged on the bottom surface of the circuit board 70, and the supporting plate can be in a steel plate structure and is mainly used for enhancing the strength of the circuit board and ensuring the bonding flatness of the photosensitive chip. The photosensitive chip is arranged in the hollowed circuit board, wires and other electronic components connected between the photosensitive chip and the circuit board are molded in the circuit board in a mode of molding a bracket, the upper surface of the molded part is provided with a mounting seat of the color filter so as to mount the color filter on the color filter, one end of a third electric connection part is arranged on the circuit board, and the other end of the third electric connection part is connected with an external power supply device so as to provide current required by the operation of the internal components. The setting mode of the molding seat not only can reduce the height of the photosensitive component, but also can mold gold wires and other electronic components which are conducted by the circuit inside the molding seat so as to protect the corresponding electronic components.

In the preferred embodiment of the present invention, the transparent cover plate 10 is lifted along the optical axis by the action of the driving element (i.e. the stepper motor) of the first driving part 31, and the elastic mechanism 40 between the optical lens 20 parts correspondingly stretches and contracts during the lifting process of the transparent cover plate 10 due to the action of the elastic mechanism 40 between the optical lens 20 parts, so that the gap between the optical lens 20 in the working and non-working states is adjusted, thereby solving the contradiction between the imaging quality and the high TTL of the large-size photosensitive chip, providing possibility for imaging of the large-size chip, and catering for the development trend of the thinning of the camera module.

Referring to fig. 8 to 11 of the drawings, an image pickup module according to a second preferred embodiment of the present invention is explained in the following description. Unlike the first preferred embodiment, in the preferred embodiment of the present invention, the second lens assembly 22 of the optical lens 20 is a fixed focus lens, which is fixed to the fixing base 317, the first lens assembly 21 is a focusing lens, which is drivingly connected to the second driving part 32 and the elastic mechanism 40, and the elastic mechanism 40 and the second driving part 32 respectively drive the first lens assembly 21 to move along the optical axis direction, so as to achieve precise focusing of the image capturing module.

The driving assembly 30 further comprises a gear mechanism 33, wherein the gear mechanism 33 is disposed between the first driving portion 31 and the second driving portion 32 for limiting the displacement of the second driving portion 32 along the optical axis direction. In detail, the gear transmission mechanism 33 is connected to the elastic mechanism 40 at the inner side of the first driving part 31, and the second driving part 32 is disposed at the inner side of the gear transmission mechanism 33, and the second driving part 32 moves up and down along with the gear transmission mechanism 33.

The second driving section 32, an AF driving section, is provided outside the first lens assembly 21, and is drivingly connected to the first barrel 211 of the first lens assembly 21. The second driving portion 32 drives the first lens assembly 21 to move up and down in the optical axis direction. The elastic mechanism 40 is supported below the second driving portion 32 through the gear mechanism 33, wherein the elastic mechanism 40 drives the first lens assembly 21 to move along the optical axis direction through the gear mechanism 33.

By means of the elastic mechanism 40 between the first lens assembly 21 and the second lens assembly 22, the gap 23 between the first lens assembly 21 and the second lens assembly 22 meets the TTL requirement of imaging of a large-size chip in the working state under the action of the stepping motor in the first driving part 31. When in standby operation, the transparent cover plate 10 is driven by the stepping motor to return to the initial position along the direction of the optical axis, in this process, the sleeve connected with the transparent cover plate 10 abuts against the upper end surface of the first lens assembly 21, and under the action of the stepping motor, the sleeve protrusion 3134 abuts against the upper end surface of the first lens assembly 21, so as to overcome the resistance of the elastic mechanism 40 between the two lens assemblies, compress the lens gap 23 between the two lenses, reduce the lens gap 23 between the first lens assembly 21 and the second lens assembly 22, and return to the state of no operation, so that the overall height is kept small.

In the preferred embodiment of the present application, the second driving part 32 (AF driving structure) of the camera module is provided to the first lens assembly 21, and the focusing function during photographing is achieved by adjusting the first lens assembly 21. Unlike the first embodiment described above, the present application can reduce the diaphragm elements, and by moving the first lens assembly 21 in the optical axis direction, not only can the focusing effect be achieved during photographing, but also the problem of near-focus photographing can be effectively solved, instead of the diaphragm effect of the first application. The AF driving part is only arranged on the first lens assembly 21, so that the requirement on the driving force of the AF motor can be effectively reduced while the focusing function in the shooting process is realized, and the design of a driving structure is simplified.

Unlike the first preferred embodiment described above, in this preferred embodiment of the present application, the sleeve protrusion 3134 of the movable sleeve 313 of the first driving part 31 extends downward from above, and the lower end of the sleeve protrusion 3134 is pressed against the upper end of the second driving part 32. When the camera module is switched from the working state to the standby state, the movable sleeve 313 of the first driving part 31 is pressed down against the second driving part 32 by the sleeve protrusion 3134, and the second driving part 32 drives the first lens assembly 21 to synchronously move down.

The second driving part 32 is disposed on the outer peripheral side of the first lens assembly 21, the transmission mechanism 33 is disposed between the first driving part 31 and the second driving part 32, the second driving part 32 is drivingly connected to the transmission mechanism 33, and the elastic mechanism 40 drives the first lens assembly 21 to move up and down in the optical axis direction through the transmission mechanism 33.

It should be noted that, in the preferred embodiment of the present invention, the outermost diameter of the second driving portion 32 is smaller than the maximum diameter of the second lens portion 21, so that the lateral dimension of the camera module is reduced, and the structure of the camera module can be made more compact. In addition, the difference from the first preferred embodiment is that the present solution can also eliminate the iris diaphragm element 70, and by driving the first lens assembly 21 to move along the optical axis direction, not only the focusing effect in the shooting process can be achieved, but also the problem of near-focus shooting can be effectively solved, so as to replace the iris diaphragm effect in the first embodiment.

Preferably, in this preferred embodiment of the invention, the movable sleeve 313 of the first driving part 31 and the housing part of the second driving part 32 may be connected as a unitary structure. That is, in the preferred embodiment of the present invention, the sleeve protrusion 3134 of the movable sleeve 313 of the first driving part 31 is drivingly connected with the second driving part 32, which is movable in synchronization with the movement of the movable sleeve 313.

When the camera module is in the working state, the elastic mechanism 40 drives the first lens assembly 21 and the second lens assembly 22 to be separated through the gear transmission mechanism 33, so that the interval of the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is increased. When the first lens assembly 21 is separated from the second lens assembly 22, the shift mechanism 33 limits the displacement of the first lens enough time 21 to prevent the excessive spacing between the first lens assembly 21 and the second lens assembly 22. As in the first preferred embodiment, in the preferred embodiment of the present invention, the retractable lens 100 further comprises at least one magnet 50, wherein the at least one magnet 50 is disposed on the movable sleeve 313, and resonance effects generated by movement of the elastic mechanism 40 when driven by an external force are alleviated by the magnet 50.

Accordingly, the gear shifting mechanism 33 includes a gear member 331 and a conductive member 332, wherein the gear member 331 is fixed in position, the second driving portion 32 is disposed on the conductive member 332, and the second driving portion 32 is synchronously movable with the conductive member 332. The gear member 331 cooperates with the conductive member 332 to limit movement of the second drive portion 32. In the preferred embodiment of the present invention, the gear member 331 may be fixedly disposed on the inner side wall of the fixing base 317 to extend upward, wherein the inside of the gear member 331 is a hollow structure, and the conductive member 332 is sleeved on the inside of the gear member 331. The conductive element 332 is inside the gear element 331 and is telescopically movable up and down with respect to the gear element 331. The gear member 331 includes a gear body 3311 and at least one baffle 3312 extending integrally inward from the gear body 3311, wherein the baffle 3312 serves to block the conductive member 332 from moving upward.

The conductive element 332 is disposed inside the gear element 331, the conductive element 332 includes a conductive main body 3321 and at least one conductive support post 3323, and the conductive element 332 is further provided with a through hole 3322 and a conductive receiving cavity 3324 communicating with the through hole 3322, wherein the conductive support post 3323 integrally extends upward from the conductive main body 3321 and the conductive support post 3323 form the conductive receiving cavity 3324. The second driving portion 32 is disposed in the conductive receiving cavity 3324 of the conductive element 332, and the second driving portion 32 is synchronously movable with the conductive element 332. The through hole 3322 is formed at an intermediate position of the conductive body 3321, wherein the size of the through hole 3322 is larger than the diameter of the bottom of the first lens assembly 21 so that the first lens assembly 21 can move in the optical axis direction within the through hole 3322 without interference. The conductive support column 3323 extends upward in the height direction along the outer side wall of the conductive body and supports the second driving part 32 by the conductive body 3321.

In the preferred embodiment of the present invention, therefore, the contradiction between the imaging quality of the large-sized chip and the height thereof is solved by providing the first driving part 31, and the size of the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is adjusted to satisfy the TTL requirement of optical imaging by using the first driving part 31 capable of driving the transparent cover plate 10 to move up and down in the operating state, and the lens gap 23 between the first optical lens assembly 20 and the second lens assembly 22 is compressed in the standby operating state to reduce the height of the whole module. In the module main body part, the AF driving device is utilized to realize the focusing effect in the shooting process so as to obtain a clearer image, and the anti-shake device of the photosensitive chip is utilized to realize shake correction in the shooting process so as to obtain a picture with higher imaging quality.

The design mode of the camera shooting module not only can solve the problem of integral height in the imaging process of a large-size chip, but also can effectively improve the imaging quality of the camera shooting module, and compared with the single-lens telescopic mode, the waterproof and dustproof capacity is further improved, meanwhile, the optical lens 20 is arranged in the first driving part, so that the optical lens 20 can be effectively protected, the stability of the integral structure can be ensured, the anti-falling capacity of the integral structure is improved, meanwhile, the development trend of lightening and thinning of terminal equipment is highly met, and the experience satisfaction degree of a user can be further increased.

Referring to fig. 12A-18B of the drawings, according to another aspect of the present invention, there are further provided several alternative embodiments of the optical lens 20 of the camera module. The first lens component 21 of the optical lens 20 is an upper group lens, and the second lens component 22 is a lower group lens, wherein an adjustable lens gap 23 exists between the first lens component 21 and the second lens component 22. The first lens assembly 21 is a movable lens group, wherein the first lens assembly 21 is acted on the second driving part 32 of the driving assembly 30 and the elastic mechanism 40, and the second lens assembly 22 is a fixed focus lens, wherein the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 can be changed with the movement of the first lens assembly 21.

In the preferred embodiment of the present invention, the first lens assembly 21 includes a plurality of lenses, wherein the lenses are sequentially arranged from an object side to an image side, and the operation mode of the image capturing module is adjusted by changing the position of the first lens assembly 21. When the camera module is in the working state, the elastic mechanism 40 drives the first lens assembly 21 to move along the object side direction, and can drive the first lens assembly 21 to move up and down along the optical axis direction through the second driving portion 32 of the driving assembly 30. Therefore, in the preferred embodiment of the present invention, the image capturing module has a larger adjustable space between the first lens assembly 21 and the second lens assembly 22 of the optical lens 20 in the operating state, so that the image capturing module can obtain a wider focal length. When the camera module is in the non-operating state, the first lens assembly 21 is moved toward the image side by the first driving portion 31 of the driving assembly 30, so that the interval of the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is reduced, and the overall height of the camera module is retracted with the movement of the transparent cover plate 10. Therefore, when the camera module is in the non-working state, the overall height of the camera module is reduced, which is beneficial to the miniaturization of the camera module.

As shown in fig. 12A and 12B, as an example, in one embodiment of the present invention, the total length of the optical lens 20 is 10.17mm when the image pickup module is in the operating state, and the total length of the optical lens 20 is 7.87mm when the image pickup module is in the non-operating state. Therefore, the optical lens 20 of the image capturing module meets the shooting performance, and simultaneously shortens the total length of the optical lens 20 by 2.30mm in a telescopic manner in a non-working state, which is beneficial to miniaturization and lightening of the whole image capturing module. In addition, the overall length of the optical lens is longer than that of the optical lens in the non-working state when the camera module is in the working state, so that the camera module can have a larger zoom range, and the camera module is beneficial to improving the shooting performance of the camera module, such as multiple zooming, long-distance shooting and the like.

It will be appreciated that in this preferred embodiment of the present invention, when the image capturing module is in the operating state, the lens gap 23 of the optical lens 20 of the image capturing module is increased, wherein the TTL (total optical length in operating state) total length of the optical lens 20 is lengthened to be suitable for improving the capturing quality of the image capturing module, and the zoom range of the optical lens is improved so that the image capturing module is suitable for long-distance capturing; when the camera module is in the non-operation mode, the lens gap 23 of the optical lens is reduced, and CTTL (total optical length in the non-operation state) of the optical lens 20 is shortened, thereby facilitating reduction of total height of the optical lens, shortening of overall height of the camera module, and miniaturization of the camera module. Preferably, in the preferred embodiment of the present invention, when the camera module is in the working state, the TTL of the optical lens 20 is greater than or equal to 10; when the camera module is in the non-working state, CTTL of the optical lens 20 is less than or equal to 9.

Preferably, in the preferred embodiment of the present invention, the width of the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is set to d, wherein the lens gap 23 ranges from 0.5mm to 3.52mm in the operating state when the image capturing module is in the operating state, and the lens gap 23 ranges less than 0.2mm in the standby state.

In the preferred embodiment of the present invention, the first lens assembly 21 comprises five, six or seven lenses, wherein the number of lenses of the first lens assembly 21 is herein by way of example only and not limitation.

As shown in fig. 13A and 13B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, wherein the lens of the second lens assembly 22 is L7. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lenses are shown in table 1 below.

TABLE 1

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As shown in table 1, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 10, which can satisfy long-distance shooting; in the non-working state, CTTL of the camera module 20 is 7.45. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is 2.784108 at the maximum.

As shown in fig. 14A and 14B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, wherein the lens of the second lens assembly 22 is L7. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lens are shown in table 2 below.

TABLE 2

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It is noted that F is a focal length of the optical lens, FG1 is a focal length of the first lens component, FG2 is a focal length of the second lens component, EPD is an entrance pupil aperture of the optical lens, MAXCT is a lens gap value between the first lens component and the second lens component, IMGH is an image height of the optical lens, HFOV is a horizontal viewing angle of the optical lens, FNO is an aperture size of the optical lens, and BFL is a back focal length of the optical lens.

As shown in table 2, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 11.24, which can satisfy long-distance shooting; in the non-working state, CTTL of the camera module 20 is 7.65. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is 2.69 at the maximum.

As shown in fig. 15A and 15B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, wherein the lens of the second lens assembly 22 is L6. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lenses are shown in table 3 below.

TABLE 3 Table 3

	construction	5+1p
				F	8.54
	FNO	1.97
				BFL	0.94
	IMGH	14.3
				HFOV	79.00
In the working state	TTL	10.20
			In a non-operating state	CTTL	7.60
First lens assembly	FG1	7.39
			Second lens assembly	FG2	-7.58
	EPD	4.34
			Lens gap	MAXCT	2.71
	F/FG1	1.15
				F/FG2	-1.13
	MAXCT/TTL	0.265651031
				TTL/IMGH	0.713286713
	CTTL/IMGH	0.531468531

As shown in table 3, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 10.20, which can satisfy long-distance shooting; in the non-working state, CTTL of the camera module 20 is 7.60. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is 2.71 at the maximum.

As shown in fig. 16A and 16B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, wherein the lens of the second lens assembly 22 is L7. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lenses are shown in table 4 below.

TABLE 4 Table 4

	construction	6+1p
				F	8.91
	FNO	1.68
				BFL	0.77
	IMGH	16.33
				HFOV	42.00
In the working state	TTL	11.24
			In a non-operating state	CTTL	8.50
First lens assembly	FG1	7.50
			Second mirrorHead assembly	FG2	-6.65
	EPD	5.30
			Lens gap	MAXCT	3.04
	F/FG1	1.19
				F/FG2	-1.34
	MAXCT/TTL	0.270690615
				TTL/IMGH	0.688303735
	CTTL/IMGH	0.520514391

As shown in table 4, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 11.24, which can satisfy long-distance shooting; in the non-operating state, the CTTL of the camera module 20 is 8.50. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is at most 3.04.

As shown in fig. 17A and 17B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, L7, wherein the lens of the second lens assembly 22 is L8. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lens are shown in table 5 below.

TABLE 5

	construction	7+1p
				F	8.69
	FNO	1.68
				BFL	0.67
	IMGH	16.33
				HFOV	42.40
In the working state	TTL	10.90
			In a non-operating state	CTTL	9.00
First lens assembly	FG1	7.23
			Second lens assembly	FG2	-10.38
	EPD	5.17
			Lens gap	MAXCT	3.22
	F/FG1	1.20
				F/FG2	-0.84
	MAXCT/TTL	0.295090586
				TTL/IMGH	0.66748316

As shown in table 5, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 10.9, which can satisfy long-distance shooting; in the non-operating state, the CTTL of the camera module 20 is 9.0. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is at most 3.22.

As shown in fig. 18A and 18B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, L7, wherein the lens of the second lens assembly 22 is L8. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lenses are shown in table 6 below.

TABLE 6

	construction	7+1p
				F	8.91
	FNO	1.80
				BFL	0.75
	IMGH	16.33
				HFOV	41.90
In the working state	TTL	11.70
			In a non-operating state	CTTL	8.57
First lens assembly	FG1	8.46
			Second lens assembly	FG2	-11.57
	EPD	4.95
			Lens gap	MAXCT	3.46
	F/FG1	1.05
				F/FG2	-0.77
	MAXCT/TTL	0.295855483
				TTL/IMGH	0.71647275

As shown in table 6, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 11.70, which can satisfy long-distance shooting; in the non-operating state, CTTL of the camera module 20 is 8.57. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is at most 3.46.

As shown in fig. 19A and 19B, in the preferred embodiment of the present invention, the first lens assembly 21 further includes lenses L1, L2, L3, L4, L5, L6, L7, wherein the lens of the second lens assembly 22 is L8. In other words, in the preferred embodiment of the present invention, the first lens assembly 21 is an upper lens group, the second lens assembly 22 is a lower lens group, and the optical parameters of the optical lens are shown in table 7 below.

TABLE 7

	construction	7+1p
				F	9.53
	FNO	1.93
				BFL	0.82
	IMGH	16.33
				HFOV	40.50
In the working state	TTL	11.62
			In a non-operating state	CTTL	9.00
First lens assembly	FG1	8.88
			Second lens assembly	FG2	-11.32
	EPD	4.94
			Lens gap	MAXCT	3.52
	F/FG1	1.07
				F/FG2	-0.84
	MAXCT/TTL	0.302841093
				TTL/IMGH	0.711573791
	CTTL/IMGH	0.551132884

As shown in table 7, in the working state, the TTL (Total Track Length, total lens length) of the optical lens 20 of the image capturing module is 11.62, which can satisfy long-distance shooting; in the non-operating state, the CTTL of the camera module 20 is 9.00. Therefore, it can be understood that, in the working state of the image capturing module, the first lens assembly 21 is moved toward the object side, so that the gap 23 between the first lens assembly 21 and the second lens assembly 22 is enlarged, thereby making the TTL of the optical lens 20 longer, which is beneficial to meeting the requirement of the image capturing module for long-distance capturing. In the non-working state, the CTTL of the optical lens 20 is shortened, and the requirements of the camera module for miniaturization and light and thin can be met, so that the overall height of the camera module is not excessively large.

It should be noted that, in the preferred embodiment of the present invention, the lens gap 23 between the first lens assembly 21 and the second lens assembly 22 is at most 3.52.

An electronic device according to another aspect of the present invention is illustrated in the following description with reference to fig. 20 of the drawings accompanying the present specification. The electronic device includes an electronic device main body 1000 and at least one camera module 2000 disposed on the electronic device main body 1000, wherein the camera module 2000 has the same structure and function as the retractable lens in the above preferred embodiment. 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. Alternatively, in the preferred embodiment of the present invention, the electronic device may be, but is not limited to, a mobile phone, a computer, a tablet computer, and other photographing devices having photographing functions, such as a smart wearable device, a monitoring device, and the like.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. A retractable lens, comprising:

2. The retractable lens according to claim 1, wherein the optical lens satisfies the following relation: F/FG1 is more than or equal to 1.0 and less than or equal to 1.3; -1.4.ltoreq.F/FG2.ltoreq.0.7; TTL/IMGH is less than or equal to 0.66 and less than or equal to 0.72; and (3) CTTL/IMGH is not more than 0.46 and not more than 0.56, wherein IMGH is the image height of the optical lens, CTTL is the total optical length of the optical lens in a non-working state, F is the focal length of the optical lens, FG1 is the focal length of the first lens assembly, and FG2 is the focal length of the second lens assembly.

3. The retractable lens according to claim 2, wherein the optical lens satisfies the following relation: f is more than or equal to 8.10 and less than or equal to 9.55; FG1 is more than or equal to 6.9 and less than or equal to 8.9; -11.6.ltoreq.FG2.ltoreq.6.4.

4. The retractable lens according to claim 2, wherein the optical lens satisfies the following relation: IMGH is more than or equal to 14.3 and less than or equal to 16.33; TTL is more than or equal to 10.00 and less than or equal to 11.70; CTTL is more than or equal to 7.45 and less than or equal to 9.00.

5. The retractable lens according to claim 2, wherein the optical lens satisfies the following relation: BFL is more than or equal to 0.65 and less than or equal to 0.95; HFOV is less than or equal to 40 and less than or equal to 80; 4.3.ltoreq.EPD.ltoreq.5.3, wherein BFL is the back focal length of the optical lens, HFOV is the horizontal viewing angle of the optical lens, EPD is the entrance pupil aperture of the optical lens.

6. The retractable lens according to claim 1, wherein the lens gap range is 0.5mm-3.52mm in an operating state when the retractable lens is in the operating state; when in the non-working state, the lens clearance range is smaller than 0.2mm.

7. The retractable lens of claim 1, wherein the first lens assembly comprises a plurality of lenses and the second lens assembly comprises a single lens.

8. The retractable lens according to claim 1, further comprising an elastic mechanism, wherein the elastic mechanism is disposed between the first lens component and the second lens component, and the first lens component is driven to move in the optical axis direction by the elastic mechanism.

9. The retractable lens according to claim 8, further comprising a transparent cover plate, wherein the transparent cover plate is located on the object side of the optical lens and is movably connected to the driving component, and the driving component drives the transparent cover plate to move along the optical axis direction.

10. The retractable lens according to claim 9, wherein the driving assembly comprises a first driving portion and a second driving portion, the first driving portion being located outside the second driving portion, the light-transmitting cover plate being supported by the first driving portion above the light incident side of the optical lens, the optical lens being drivingly disposed on the second driving portion.

11. The retractable lens according to claim 10, wherein the driving assembly further comprises a shift mechanism, wherein the shift mechanism is disposed between the first driving portion and the second driving portion, and the shift mechanism is connected to the elastic mechanism, the shift mechanism being configured to restrict displacement of the first lens assembly in the optical axis direction.

12. The retractable lens according to claim 10, wherein the driving assembly further comprises a shift mechanism, wherein the shift mechanism is disposed between the second driving portion and the optical lens, and the shift mechanism is connected to the elastic mechanism, the shift mechanism being configured to restrict displacement of the first lens assembly in the optical axis direction.

13. The retractable lens according to claim 12, wherein the conductive element is disposed inside the gear element, the conductive element comprising a conductive body and at least one conductive post, wherein the conductive post extends integrally upward from the conductive body.

14. The retractable lens according to claim 10, wherein the first driving portion includes a first driving element, a movable sleeve, and a fixed base, wherein the driving element is provided to the fixed base, the first driving element is drivingly connected to the movable sleeve, and the movable sleeve is driven to move up and down in the optical axis direction by the first driving element.

15. The retractable lens according to claim 14, wherein the first driving portion further comprises at least one guide member, wherein the at least one guide member is disposed on the fixed base along the direction of the optical axis, the guide member comprising a main guide bar and a sub guide bar, wherein the main guide bar and the sub guide bar are located at two diagonal positions of the fixed base.

16. The telescopic lens, its characterized in that includes:

17. The module of making a video recording, its characterized in that includes:

the retractable lens according to any one of claims 1 to 16; and