CN117518390A

CN117518390A - Optical drive assembly and camera module

Info

Publication number: CN117518390A
Application number: CN202210907060.6A
Authority: CN
Inventors: 请求不公布姓名; 岑凯迪; 白华
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-06

Abstract

The application provides an optical driving assembly, which comprises an optical lens assembly and a driving device. The optical lens assembly is a split lens part and comprises a first lens part, a second lens part and a third lens part which are arranged along a sequential optical axis, wherein the driving device comprises a shell, the shell provides a first lens part installation position for the first lens part, the first lens part is kept above the second lens part, a third lens part installation position is provided for the third lens part, the third lens part is kept below the second lens part, and the second lens part can move along the optical axis direction relative to the first lens part and the third lens part.

Description

Optical drive assembly and camera module

Technical Field

The application relates to the technical field of camera modules, in particular to an optical driving assembly capable of performing optical inner focusing, an assembly method thereof and a camera module.

Background

With the popularization of mobile electronic devices, the camera module is widely applied to the mobile electronic devices for image acquisition. Along with the increasing requirement of users on the imaging quality of the imaging module, the pixels of the imaging module are continuously improved, and meanwhile, the size of the photosensitive chip is correspondingly increased, so that the requirements on the optical lens matched with the imaging module are also increased. On the other hand, in the conventional integrated optical lens disposed in the image pickup module, it is difficult to achieve miniaturization due to technical limitations of the design and the assembling method of the integrated optical lens, including one lens barrel and a plurality of lenses provided in the lens barrel. The miniaturization and light weight development requirements of the terminal equipment are met, the installation space reserved for the camera module is limited, and the volume of the camera module is limited; on the other hand, an increase in the size of the photosensitive chip causes an increase in the size and weight of an optical lens to be matched therewith, and it is difficult for the driving force that can be provided by the existing motor to be increased accordingly in order to realize the auto-focusing function. In addition, under the premise of limited driving force, the heavier the optical lens, the shorter the stroke of the motor capable of driving the optical component to move will affect focusing. In addition, the heavier the optical lens, the slower the speed at which the motor drives the optical member to move, and the longer the optical member reaches a predetermined position, the focusing effect will be affected.

In order to achieve better optical focusing, it is necessary to achieve driving of a large stroke of an optical lens, and further, it is necessary to increase the volume of a motor or to change the structure of the motor, the number of motor parts is increased, the thickness of a device main body is increased, and it is difficult to achieve miniaturization while providing sufficient driving force

Disclosure of Invention

In view of the above, the present invention provides an optical driving assembly, an assembling method thereof and an image pickup module, which can drive a part of a lens portion of the optical lens assembly to move, thereby realizing optical focusing in a limited optical lens internal space, and providing sufficient driving force while achieving compact and miniaturized overall structure.

An object of the present invention is to provide an optical driving assembly and an image capturing module thereof, wherein the optical lens assembly is divided into a plurality of lens portions, and a part of the lens portions are driven to move, so that the imaging quality is improved, and the miniaturization of the whole structure is ensured.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof and an image pickup module, wherein the optical lens assembly is divided into a plurality of lens portions, and a part of the lens portions are driven to move, so as to realize a focusing function and solve the problem of insufficient driving force.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof and an image capturing module, which divide an optical lens assembly into a plurality of lens portions, wherein one lens portion is disposed on a movable carrier of a driving device, and the other lens portions are fixed to the driving device, so as to realize movement of a part of lenses relative to the other lens portions to realize focusing.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image pickup module, in which a first lens portion and a third lens portion are mounted on a metal housing, and the metal housing provides a mounting reference surface with stable structure, so that the relative positions of the first lens portion and the third lens portion can be kept stable.

An object of the present invention is to provide an optical drive assembly, an assembling method thereof, and an image pickup module, wherein a first lens part is mounted at a first lens part mounting position of a housing, the first lens part is held above a second lens part, a third lens part is mounted at a third lens part mounting position of the housing, and the third lens part is held below the second lens part, thereby forming an imageable optical lens assembly.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof and an image capturing module, wherein a second lens portion is disposed on a carrier assembly, and the carrier assembly drives the second lens portion to move along an optical axis direction relative to a first lens portion and a third lens portion.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image capturing module, wherein a third lens portion is mounted at a third lens portion mounting position of a housing, and the third lens portion is mounted on a base, so that the base can be indirectly connected to the housing, and a base-mounting reference surface is provided.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image capturing module, wherein a first lens portion is mounted at a first lens portion mounting position of a housing, a third lens portion is mounted at a third lens portion mounting position of the housing, and the first lens portion mounting position and the third lens portion mounting position are arranged in a staggered manner in a horizontal direction, so that the structure is reasonable.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image capturing module, wherein a first lens portion mounting position and a third lens portion mounting position of a housing are arranged in a staggered manner with an extension arm of a slide glass, so that the structure is compact and reasonable.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image capturing module, wherein a part of an extension arm of a slide extends from an avoidance groove of a housing to the inside, and a mechanism is reasonably arranged while an adjustment space of a second lens portion is provided.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image capturing module, wherein a first lens portion is mounted on a bearing portion of a first lens portion mounting portion of a housing, a third lens portion is mounted on a coupling portion of a third lens portion mounting portion of the housing, and the first lens portion mounting portion and the third lens portion mounting portion are arranged in a staggered manner in a height direction, so that the structure is compact and reasonable.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image pickup module, in which a lens part is mounted on a bearing part of a first lens part mounting position of a housing, and a third lens part is mounted on a coupling part of a third lens part mounting position of the housing, so that a height gap exists between the first lens part and the third lens part in an optical axis direction, and a second lens part moves in the height gap.

An object of the present invention is to provide an optical driving assembly, an assembling method thereof, and an image pickup module, wherein a part of an extension arm of a slide is disposed below a bearing portion of a first lens portion, and a part of the extension arm is disposed in an avoidance groove of a housing, so that the optical driving assembly is stable and supported while the structure is compact and the arrangement is reasonable.

Other advantages and features of the present invention will become more fully apparent from the following detailed description, and may be learned by the practice of the invention as set forth hereinafter.

According to one aspect of the present invention, there is provided a method of assembling an optical drive assembly, comprising:

(a) Providing an optical lens, wherein the optical lens comprises a first lens part, a second lens part and a third lens part;

(b) Providing a driving device, wherein the driving device comprises a carrier component and a fixing part, the fixing part comprises a shell, and the third lens part and the shell are fixed;

(c) Preassembling the second lens part on a carrier component of the driving device, preassembling the first lens part on the shell, and arranging the first lens part, the second lens part and the third lens part along the optical axis direction;

(d) Assembling and calibrating the relative positions of the first lens part, the second lens part and the third lens part;

(e) And fixing the first lens part on the shell and fixing the second lens part on the carrier component.

In one embodiment of the invention, the housing includes a housing body, a first lens portion mounting position, a third lens mounting position, and an avoidance groove, and the first lens portion mounting position, the third lens mounting position, and the avoidance groove are disposed in a staggered manner in a horizontal direction.

In one embodiment of the present invention, the step (b) includes the steps of:

(b1) Providing a driving device, wherein the driving device comprises a carrier component and a fixing part, the fixing part comprises a shell and a base, the base is fixed on the shell, and the carrier component is movably arranged on the fixing part;

(b2) Fixing the third lens part with the shell;

(b3) And connecting the base with the third lens part.

In one embodiment of the present invention, in the step (b 1), the carrier member is movably connected to the fixing portion by a holding member, and moves in a space formed by the housing and the base.

In one embodiment of the present invention, in the step (b 2), the third lens portion is fixed to the third lens portion mounting position of the housing.

In an embodiment of the invention, the third lens portion mounting location of the housing includes at least one connecting arm and at least one combining portion, the connecting arm extends inwards from the housing body and is formed integrally with the connecting portion, and the combining portion is fixedly connected with the third lens portion.

In one embodiment of the invention, the carrier assembly includes a carrier and a slide fixedly attached to the carrier, the slide being a sheet-like structure extending inwardly from the carrier, including a support portion for carrying the second lens portion and at least one extension arm.

In an embodiment of the invention, the upper end surface of the housing body near the object side extends inwards to form the first lens part mounting position, and the first lens part mounting position comprises an opening and at least one bearing part, wherein the opening corresponds to the first lens part, so that light enters through the first lens part, and the bearing part is used for bearing against the first lens part.

In one embodiment of the present invention, in the step (b 3), the second lens portion is preassembled to the support portion of the slide, and the first lens portion is preassembled to the bearing portion of the first lens portion mounting position.

In one embodiment of the invention, step (d) further comprises: the second lens part can be adjusted and moved on the supporting part, the position of the first lens part on the bearing part is adjustable, the position of the second lens part is clamped and adjusted through the avoiding groove, and the assembly is carried out based on real-time adjustment of the imaging quality of the whole lens optical imaging system.

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

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

Drawings

The foregoing and other objects, features and advantages of the present application will become more apparent from the following more particular description of embodiments of the present application, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 shows an overall structural view of an optical drive assembly in the present application.

Fig. 2 shows an exploded schematic view of an optical drive assembly of the present application.

FIG. 3 shows a schematic A-A cross-section of an optical drive assembly of the present application.

Fig. 4 shows a schematic structural view of a portion of the optical drive assembly driving device 20 in the present application.

Fig. 5 shows a schematic structural view of the carrier 211 assembly 21 in the optical drive assembly of the present application.

Fig. 6 shows a schematic structural view of the housing 25 in the optical drive assembly of the present application.

FIG. 7 shows a schematic B-B cross-sectional view of an optical drive assembly of the present application.

Fig. 8 shows a schematic structural view of the optical drive assembly chassis 24 in the present application.

Fig. 9 shows a schematic cross-sectional view of the camera module in the present application.

Detailed Description

Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present invention and not all embodiments of the present invention, and it should be understood that the present invention is not limited by the example embodiments described herein.

In the description of the present invention, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present invention that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or both elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

To meet the requirements of miniaturization and sufficient driving force, the invention provides an optical driving assembly for driving part of lenses to realize focusing. The optical driving assembly comprises a split lens assembly, wherein the lens assembly comprises a plurality of lens parts, one lens part is arranged on a movable carrier of a driving device, and the other lens parts are fixed on the driving device, so that part of lenses move relative to the other lens parts to realize focusing.

On the one hand, the optical lens has limited internal space, the size of the motor part is difficult to reduce and is arranged in the optical lens, on the other hand, the motor structure is complex, the number of parts is increased, the accumulated tolerance chain of assembly is long, the assembly difficulty is increased, and the assembly precision is difficult to ensure. In addition, because the fixed lens parts are bonded through glue, and the lens barrels of the lens parts are mostly resin, the thermal expansion coefficients of the fixed lens parts and the lens barrels are different, so that the variation of the lenses of the assembled camera module in the process of baking and the like is different, the variation of the lens parts occurs, and the imaging quality of the final camera module is reduced.

Exemplary optical drive Assembly

As shown in fig. 1 to 8, an optical drive assembly according to an embodiment of the present application is illustrated, which includes an optical lens assembly 10 and a driving device 20. The optical lens assembly 10 is a split lens part, and includes a plurality of lens parts, wherein the lens parts are disposed along an optical axis, and a part of the optical lens assembly 10 is disposed inside the driving device 20 and is held and driven by the driving device 20.

FIG. 3 is a schematic view of the optical drive assembly of FIG. 1 taken along section A-A, as shown in FIG. 3. The optical lens assembly 10 includes a first lens portion 11, a second lens portion 12, and a third lens portion 13, the first lens portion 11, the second lens portion 12, and the third lens portion 13 being disposed in order from an object side to an image side along a direction of an optical axis. Wherein the first lens part 11 is disposed in a near object side direction of the driving device 20, the second lens part 12 is disposed in the driving device 20 and driven by the driving device 20 to move along an optical axis direction, and the third lens part 13 is disposed inside the driving device 20 to allow light to sequentially pass through the first lens part 11, the second lens part 12, and the third lens part 13 of the optical lens assembly 10.

Wherein the first lens part 11 further includes a first lens group 111 and a first lens barrel 112, the first lens group 111 is mounted in the first lens barrel 112, the second lens part 12 includes a second lens group 121 and a second lens barrel 122, the second lens group 121 is mounted in the second lens barrel 122, the third lens part 13 includes a third lens group 131 and a third lens barrel 132, and the third lens group 131 is mounted in the third lens barrel 132. The first lens group 111, the second lens group 121 and the third lens group 131 together form an imageable optical system.

In the present application, the driving device 20 further includes at least one carrier component 21, a fixing portion 22, at least one driving component 23, at least one holding component 24 connecting the carrier component 21 and the fixing portion 22, and at least one circuit component 25, wherein the fixing portion 22 is composed of a housing 221 and a base 222, and the housing 221 is fixedly connected to the base 222. Meanwhile, the optical lens assembly 10 is partially a movable lens, in an alternative embodiment of the present application, the relative positions of the second lens portion 12 with respect to the first lens portion 11 and the third lens portion 13 can be adjusted, where the first lens portion 11 and the third lens portion 13 are respectively fixed with the fixing portion 22 of the driving device 20 so as to be disposed on a predetermined optical path of the imageable optical system, the second lens portion 12 is disposed on the carrier assembly 21 of the driving device 20, and the driving assembly 23 drives the second lens portion 12 to perform position adjustment to achieve clear imaging, in other words, the second lens portion 12 can move along the optical axis to achieve focusing under the driving action of the driving device 20.

For better image quality, the second lens portion 12 is optically more sensitive than the other lens portions in the optical design. In some embodiments, the third lens portion 13 is disposed below the second lens portion 12 along the optical axis and is disposed on the base 222 of the driving device 20, and the number of lenses of the third lens group 131 of the third lens portion 13 may be more than three.

In some alternative embodiments, the driving assembly 23 of the driving device 20 further includes at least one driving coil 231 and at least one driving magnet 232, the driving magnet 232 and the driving coil 231 are disposed on the fixing portion 22 of the driving device 20 and the carrier assembly 21, wherein in one alternative embodiment, the driving magnet 232 is disposed on the carrier assembly 21 and corresponds to the driving coil 231 being disposed on the fixing portion 22, and in another alternative embodiment, the driving magnet 232 is disposed on the fixing portion 22 and the driving coil 231 is disposed on the carrier assembly 21. In one alternative embodiment, the second lens portion 12 is disposed on the carrier assembly 21, the driving coil 231 is disposed on the carrier assembly 21, the driving magnet 232 is disposed on the housing 221, the driving coil 231 is electrically connected to the circuit assembly 25 of the driving device through at least one holding element 24, and when the driving coil 231 is energized, the driving carrier assembly 21 moves along the optical axis direction relative to the base 222, so as to drive the second lens portion 12 disposed on the carrier assembly 21 to move along the optical axis, thereby realizing the focusing function.

Wherein the first lens portion 11 and the third lens portion 13 are disposed at different height positions of the housing 221, the height difference between the first lens portion 11 and the third lens portion 13 forms a gap for accommodating the second lens portion 12, and allowing the second lens portion 12 to move along the optical axis direction under the driving of the driving device 20, so as to implement the adjustment of the optical system.

As shown in fig. 3-5, the carrier assembly 21 further includes a carrier 211 and a slide 212 fixedly coupled to the carrier 211. The carrier 211 has a hollow ring structure, and the carrier 211 has an outer side wall 2111, an inner side surface 2112, an upper end surface 2113, a lower end surface 2114 and a through hole 2115. The upper end surface 2113 of the carrier 211 is close to the object side end, i.e., close to the light incident side, the lower end surface 2114 is close to the image side end, i.e., close to the light emitting side, and the through hole 2115 is located inside the carrier 211, and extends from the upper end surface 2113 to the lower end surface 2114 to form the through hole 2115.

The slide 212 is a sheet-like structure extending inwardly from the carrier 211, and further includes a support 2121 and at least one extension arm 2122. The support 2121 is a hollow ring structure for carrying and supporting the second lens portion 12, and the second lens barrel 122 of the second lens portion 12 is disposed on the support 2121, such that the second lens group 121 is disposed corresponding to the middle through hole of the support 2121. The extension arm 2122 extends radially from the support 2121 to the carrier 211 and, in some alternative embodiments, extends to an upper end surface 2113 of the carrier 211 in fixed connection with the carrier 211. The extension arms 2122 may be provided in a plurality, symmetrically disposed about the support 2121 to provide a uniform and balanced support, and in some alternative embodiments, the extension arms 2122 may be provided in greater than three to provide a more stable support plane. In an alternative embodiment of the present invention, the number of the extension arms 2122 is four, and the extension arms extend from four sides of the upper end surface 2113 of the carrier 211 to the supporting portion 2121, respectively, so as to avoid the plurality of holding members 24 disposed at corner positions of the upper end surface 2113 of the carrier 211. The carrier 211 forms a plurality of relief holes 2123 with the extension arm 2122 and support 2121 of the slide 212. The carrier 212 is fixedly connected to the upper end surface 2113 of the carrier 211, and the carrier 212 may be embedded in the upper end surface of the carrier 211. In other alternative embodiments, the carrier 212 may be integrally formed with the carrier 211 by an insert molding process.

The second lens portion 12 is fixed to the carrier member 21 and moves in response to movement of the carrier member 21. In some embodiments of the present application, the second lens portion 12 is disposed on the support 2121 of the slide 212, that is, the second lens barrel 122 is fixedly connected to the support 2121 of the slide 212, and the radial dimension of the second lens barrel 122 is smaller than the dimension of the support 2121 of the slide 212, so that the second lens barrel 122 is supported against the support 2121 of the slide 212. In some alternative embodiments, the second lens group 121 is disposed directly on the support 2121 of the slide 212.

The third lens portion 13 is arranged inside the carrier assembly 21, the carrier assembly 21 being movable relative to the third lens portion 13. In some alternative embodiments of the present application, the third lens portion 13 is disposed in the through hole 2115 of the carrier 211, and there is a certain gap between the outer side surface of the third lens barrel 132 of the third lens portion 13 and the inner side surface 2112 of the carrier 211, that is, the maximum outer diameter of the third lens barrel 132 is smaller than the diameter of the through hole 2115 of the carrier 211, so that the carrier assembly 21 can move relative to the third lens portion 13 movably, without interference or collision.

The drive coil 231 of the drive assembly 23 is disposed on the carrier assembly 21 for acting with the drive magnet 232 to provide a driving force for movement of the carrier assembly 21. The driving coil 231 is disposed on the outer side wall 2111 of the carrier 211, and the driving magnet 232 may be disposed around the driving coil 231 around the outer side wall 2111 of the carrier 211.

In some alternative embodiments, the outer side wall 2111 of the carrier 211 forms an annular winding slot, and the driving coil 231 is wound around the winding slot, so as to ensure that the driving coil 231 is fixedly disposed on the outer side wall 2111 of the carrier 211.

In other alternative embodiments, the outer side wall 2111 of the carrier 211 is formed with a plurality of protrusions for surrounding the driving coil 231, and the driving coil 231 is symmetrically disposed at the outer side wall 2111.

The outer side wall 2111 of the carrier 211 is provided with a columnar protrusion extending outwardly from the outer side wall 2111 of the carrier 211. The number of columnar projections may be plural, and in some alternative embodiments of the present application, the number of columnar projections is 2, and the columnar projections are disposed at two opposite corners of the carrier 211. The end of the driving coil 231 may be wound around the columnar protruding portion, that is, one end (initial end) of the driving coil 231 is wound around one of the columnar protruding portions, the main body of the driving coil 231 is wound around the outer side wall 2111 of the carrier 211, and the other end (final end) of the driving coil 231 is wound around the other columnar protruding portion. In one specific example of the present application, the columnar protrusion is of a T-shaped structure, i.e., the thickness of the tip (outer end) of the columnar protrusion is thicker than that of other positions to prevent the drive coil 231 from falling off during winding.

The driving magnet 232 is disposed at the opposite side of the driving coil 231 for providing a magnetic field required for the movement of the driving coil 231, thereby driving the carrier assembly 21 and the second lens part 12 to move up and down in the optical axis direction. The number of the driving magnets 23 is at least one, and in some alternative embodiments of the present application, the number of the driving magnets 232 is 2, symmetrically disposed outside the carrier 211, opposite to the driving coil 231, to provide a smooth driving force.

As shown in fig. 6 and 7, fig. 7 is a schematic view of the optical driving assembly in section B-B in fig. 1, and the housing 221 of the driving device 20 further includes a housing main body 2211, a first lens portion mounting position 2212, a third lens portion mounting position 2213, and a avoiding groove 2214. The housing main body 2211, the first lens portion mounting position 2212 and the third lens portion mounting position 2213 can be of an integrally formed metal structure so as to keep the connection stability of all components in the housing. The housing body 2211 is of an annular hollow structure, and the first lens part mounting position and the third lens mounting position are arranged in a staggered manner in the horizontal direction. The upper end surface of the housing body 2211 near the object side extends inward to form a first lens portion mounting position 2212 for bearing against the first lens portion 11, i.e. the first lens portion 11 is fixed to the first lens portion mounting position 2212 of the housing 221. The housing body 2211 extends inward to form a third lens portion mounting location 2213 for fixedly connecting the third lens portion 13, i.e. the third lens portion 13 is fixed to the third lens portion mounting location 2213 of the housing 221.

The first lens portion mounting position 2212 further includes an opening 22121 and at least one bearing portion 22122, the opening 22121 corresponds to the clear aperture of the first lens portion 11, such that light enters the opening 22121 through the first lens portion 11, and the bearing portion 22122 extends inward from the housing body 2211 to the opening 22121 for bearing against the first lens portion 11. The aperture of the opening 22121 is smaller than the outer diameter of the lens barrel of the first lens portion 11 and larger than the clear aperture of the first lens portion 11, so that the first lens barrel 112 of the first lens portion 11 is supported by the supporting portion 22122. In some alternative embodiments, the number of the bearing portions 22122 can be 2, and the bearing portions 22122 can be formed by extending inward from opposite sides of the housing body 2211, and the inner side of the bearing portion 22122 can be annular to form the opening 22121.

The third lens portion mounting position 2213 further includes at least one connecting arm 22131 and at least one coupling portion 22132. The connecting arm 22131 extends inward from the housing main body 2211, is integrally formed with the connecting portion 22132, and the connecting portion 22132 is fixedly connected to the third lens portion 13, i.e. the connecting portion 22132 is fixedly connected to an upper end surface of the third lens barrel 132 of the third lens portion 13. In some alternative embodiments, the connecting arms 22131 are offset from the bearing portions 22122 of the first lens mounting locations 2212, and the number of the connecting arms 22131 may be four, which are respectively located at two sides of the bearing portion 22122 of the first lens mounting location 2212.

The opening 22121 is formed with a relief groove 2214 along a radial direction of the opening 22121, the relief groove 2214 extends to the housing main body 2211, and is located between two connecting arms 22131 of the third lens mounting portion 2213, and the relief groove 2214 and the connecting arms 22131 are arranged in a staggered manner and adjacent to each other.

In some alternative embodiments, the third barrel 132 of the third lens part 13 is provided with a stopper protrusion that mates with the coupling portion 22132 of the third lens part mounting location 2213 for restricting the coupling portion 22132 within the mounting location formed by the stopper protrusion. In some embodiments, an upper end surface of the third lens barrel 132 of the third lens part 13 is provided with a groove for accommodating an adhesive medium, and the coupling portion 22132 extends laterally and is fixed to the third lens barrel 132 by the adhesive medium, thereby fixedly connecting the third lens part 13 to the housing 221.

In some alternative embodiments, the first lens portion 11 is fixed to the bearing portion 22122 of the first lens portion mounting location 2212 of the housing 221, and the third lens portion 13 is fixed to the coupling portion 22132 of the third lens portion mounting location 2213 of the housing 221. The connecting arm 22131 of the third lens portion mounting position 2213 extends inward and downward from the housing main body 2211 to the coupling portion 22132, and the bearing portion 22122 is higher than the coupling portion 22132 in the height direction, so that a height gap exists between the first lens portion 11 and the third lens portion 13 in the optical axis direction. The second lens portion 12 is disposed in the opening 22121, is accommodated in the height gap formed by the first lens portion 11 and the third lens portion 13, and is driven to move along the optical axis in the height gap.

As shown in fig. 3 and 6, the part of the extension arm 2122 of the slide 212 extends from the avoidance groove 2214 to the inside, the connection arm 22131 and the combining portion 22132 are disposed in the avoidance hole 2123 formed by the carrier 211 and the extension arm 2122 and the support portion 2121 of the slide 212, that is, the avoidance groove 2214 is disposed corresponding to the part of the extension arm 2122 of the slide 212, and the connection arm 22131 and the combining portion 22132 of the housing 221 are disposed in a dislocation manner with the extension arm 2122 of the slide 212, so that the structure is reasonable.

The connection arm 22131 and the coupling portion 22132 are disposed in the escape hole 2123 formed between the upper end portion of the carrier 211 and the extension arm 2122 and the support portion 2121 of the slide 212, and the connection arm 22131 and the coupling portion 22132 are disposed so as not to overlap with the slide 212 in the horizontal direction, i.e., the size of the outer side of the support portion 2121 of the slide 212 in the radial direction is smaller than that of the connection arm 22131 and the coupling portion 22132, and a certain gap is provided between the outer side of the support portion 2121 of the slide 212 and the connection arm 22131 and the coupling portion 22132 in the horizontal direction, so that the slide 212 does not interfere with and collide with the connection arm 22131 and the coupling portion 22132 when driven under the interaction of the driving coil 231 and the driving magnet 232.

The avoiding groove 2214 is located between two connecting arms 22131 of the third lens portion mounting position 2213, and is disposed at a peripheral side of the second lens portion 12, so as to form an adjusting space of the second lens portion 12, so as to facilitate adjusting a position of the second lens portion 12 in a subsequent assembling process. That is, when the optical driving assembly is assembled, the assembling apparatus clips the second lens portion 12 located in the driving device 20 from the avoidance groove 2214, and performs real-time adjustment based on the imaging quality of the entire lens optical imaging system to perform assembly, thereby improving the accuracy, reliability and efficiency of assembly.

Correspondingly, the outer side surface of the second lens barrel 122 of the second lens portion 12 may have at least one clamping portion 1221, which is formed by integrally extending outwards along the outer side of the second lens barrel 122, and the number of the clamping portions 1221 is plural. In some alternative embodiments of the present application, the number of the clamping portions 1221 is 2, and the clamping portions are symmetrically disposed along the first lens barrel 112 and extend into the avoidance groove 2214 formed by the housing 221, so as to clamp the clamping portion 1221 of the second lens portion 12 through the avoidance groove 2214, and adjust the position of the second lens portion 12, so as to meet the optical imaging requirement.

In some alternative embodiments of the present application, as shown in fig. 6, in order to ensure that the first lens portion 11 and the third lens portion 13 have a sufficient bonding area with the housing 221, the number of the bearing portions 22122 of the first lens portion mounting position 2212 is 2, and the bearing portions 22122 of the first lens portion mounting position 2212 are respectively disposed on two opposite sides of the housing main body 2211 and symmetrically disposed, and an included angle between the bearing portion 22122 of the first lens portion mounting position 2212 and the optical axis is not less than 60 degrees, so that the bonding between the first lens portion 11 and the housing 221 is stable. The number of the connecting arms 22131 of the third lens portion mounting position 2213 is four, the connecting arms are respectively located at two sides of the bearing portion 22122 of the first lens portion mounting position 2212, are arranged on the periphery side of the second lens portion 12 and are symmetrically arranged, and the bonding balance and stability of the third lens portion 13 and the shell 221 are provided. The escape grooves 2214 are located between the two connection arms 22131 of the third lens mount 2213, and the number of the escape grooves 2214 is 2, and the escape grooves 2214 are symmetrically arranged on the outer side of the second lens portion 12. The escape grooves 2214 are respectively provided at the other two opposite sides of the housing main body 2211 to reserve a sufficient space so that the second lens part 12 can be clamped and adjusted. Through reasonable arrangement of the structure and the position of the bearing part 22122 of the first lens part mounting position 2212, the connecting arm 22131 of the third lens part mounting position 2213 and the avoiding groove 2214, compact arrangement and stable mounting of each component are realized in a limited space.

The slide 212 has 4 extension arms 2122 uniformly distributed on the circumferential side of the annular support 2121, the extension arms 2122 are divided into two groups, each two groups are opposite, the first group of extension arms 2122 is disposed under the bearing portion 22122 of the first lens portion mounting position 2212, and the second group of extension arms 2122 is disposed in the avoiding groove 2214. Wherein the slide 212 is moved by the drive, the second set of extension arms 2122 remain within the avoidance slot 2214 at all times. Wherein, each extension arm 2122 is disposed between every two connection arms 22131 of the third lens portion mounting position 2213. The clamping portion 1221 of the second barrel 122 is disposed above the support portion 2121 of the slide 212, and extends outward from the second barrel 122 in the direction of the escape groove 2214 of the housing 221, i.e., in line with the direction of the second set of extension arms 2122, to adjust the position of the second lens portion 12 through the escape groove 2214. By such arrangement, on the one hand, the slide 212 is firmly connected with the carrier 211, and on the other hand, the clamping portion 1221 of the second lens barrel 122 is consistent with the extending direction of the extension arm 2122, so that the contact area between the slide 212 and the second lens portion 12 is increased, and the second lens portion 12 is stably supported. In addition, the space of the avoidance groove 2214 is fully utilized, and the clamping portion 1221 and the extension arm 2122 of the second barrel 122 are disposed in the avoidance groove 2214, so that the structure is compact and the disposition is reasonable.

As shown in fig. 4, the driving magnet 232 is provided on the inner side surface of the main body 2211 of the case 221, and is provided so as to face the driving coil 231. One side surface of the drive magnet 232 is fixed to the housing main body 2211, and the opposite side is provided opposite to the drive coil 231 on the carrier 211. In some alternative embodiments, the first lens portion mounting portion 2212 of the housing 221 is recessed downward at four corners to form a lower stepped surface 22123, the lower stepped surface 22123 is lower than the bearing portion 22122, and the driving magnet 232 is fixed to an inner surface of the lower stepped surface 22123, that is, an upper side surface of the driving magnet 232 is fixed in contact with an inner side surface of the lower stepped surface 22123.

In some alternative embodiments, as shown in fig. 3 and 7, the connection arm 22131 of the third lens portion mounting position 2213 extends inward and downward from the housing main body 2211 to the coupling portion 22132, and the bearing portion 22122 of the first lens portion mounting position 2212 is higher than the connection arm 22131 and the coupling portion 22132 in the height direction, so that a height gap exists between the first lens portion 11 and the third lens portion 13 in the optical axis direction. The bearing portion 22122 is higher than the slide 212, and the combined portion 22132 of the third lens portion mounting portion 2213 in fixed contact with the third lens portion 13 is lower than the slide 212, that is, the combined portion 22132 and the bearing portion 22122 form a stroke interval, and the slide 212 moves up and down in the stroke interval to drive the second lens portion 12 to move under the action of driving force.

The base 222 of the fixing portion 22 of the driving device 20 includes a base body 2221, the base body 2221 is provided with a base through hole 22211, and the third lens portion 13 is disposed in the base through hole 22211 and fixedly connected to the inner side of the base body 2221. The base 222 is disposed in the housing 221, the base 222 is fixedly connected to the inside of the housing main body 2211 of the housing 221, and further, the circumferential surface of the base 222 is fixedly connected to the end portion of the housing main body 2221 near the image side. The base 222 and the housing 221 constitute a fixing portion 22.

The base 222 is fixedly connected to the housing body 2221, the third lens unit 13 is disposed and fixed in the base 222, the outer side of the third lens barrel 132 of the third lens unit 13, the housing 221 and the base 222 form a first accommodating space, and the carrier 211 and the driving coil 231 are movably disposed in the first accommodating space and can move in the optical axis direction in the first accommodating space.

The first lens portion 11, the housing 221, and the third lens portion 13 form a second accommodating space, in which the slide 212 and the second lens portion 12 are movably disposed, and in which movement occurs in the optical axis direction.

The carrier assembly 21 forms a movable part of the driving device 20, the base 222 and the housing 221 form a fixed part 22 of the driving device 20, the driving coil 231 and the driving magnet 232 of the driving assembly 23 are respectively arranged on the movable part and the fixed part 22, the first lens part 11 and the third lens part 13 are fixedly arranged on the fixed part 22, the second lens part 12 is fixed on the movable part, the fixed part 22 and other components form a first accommodating space and a second accommodating space, and the movable part moves under the action of driving force in the first accommodating space and the second accommodating space, so that the second lens part 12 is driven to move, and optical internal focusing is realized.

As shown in fig. 4 and 6, the driving device 20 further includes a holding assembly 24, and the holding assembly 24 is used for movably supporting and holding the movable portion to the fixed portion and supporting the movable portion to be movable relative to the fixed portion 22. In this embodiment, the holding component 24 may be an elastic component, and is adapted to drive the carrier component 21 and the second lens portion 12 to return to the original position (i.e. the position when not driven), and includes an upper elastic component 241 and a lower elastic component 242. The upper elastic member 241 and the lower elastic member 242 are oppositely disposed at opposite sides of the carrier 211, that is, the upper elastic member 241 is disposed at the light incident side of the carrier 211, and the lower elastic member 242 is disposed at the light emergent side of the carrier 211, so as to repositionably suspend the carrier assembly 21 and the second lens portion 12 in the accommodating space of the fixing portion 22.

Specifically, the upper elastic member 241 is disposed between the driving magnet 232, the carrier 211 and the housing 221, and has a sheet-like structure as a whole, including an elastic inner ring, an elastic outer ring and an elastic connecting beam. The inner ring is arranged on the upper surface of the carrier 211, the outer ring is borne on the driving magnet 232 and fixedly connected with the driving magnet 232, and the elastic connecting beam is connected with the inner ring and the outer ring, and comprises a plurality of horizontal bending steps, so that elastic restoring force can be provided.

Likewise, the lower elastic member 242 is disposed between the base 222 and the carrier 211, and includes an elastic inner ring, an elastic outer ring, and an elastic connection beam extending between the elastic inner ring and the elastic outer ring, wherein the elastic inner ring is fixed to the carrier 211 and the elastic outer ring is fixed to the base 222. In some alternative embodiments, the lower elastic member 242 includes at least two elastic units symmetrically disposed, the elastic units including an inner ring, an outer ring, and an elastic connection beam extending to connect the inner ring and the outer ring.

When the carrier 211 moves in the optical axis direction by the driving force, the elastic member deforms to accumulate the elastic force; when the carrier 211 is stopped, the elastic force of the elastic member is released, and the carrier 211 is driven to return to the original position, so as to drive the second lens portion 12 connected to the carrier 211 to return to the original position.

The elastic connecting beam extends from the elastic outer ring to the elastic inner ring in a bending manner so as to reserve enough space for the movement of the carrier 211, thereby not only providing guarantee for the large movement stroke of the carrier 211, but also reducing the driving resistance of the carrier 211 and improving the optical focusing sensitivity. It will be appreciated that the longer the length of the resilient connecting beam, the more the resilient connecting beam bends, the less the resilient connecting beam itself deforms after deformation, and the more easily it resets after the resilient connecting beam is stretched.

As shown in fig. 4 and 5, in some embodiments, the carrier 211 further includes a first anti-collision boss 2116, and the first anti-collision boss 2116 is disposed on an upper end surface 2113 and a lower end surface 2114 of the carrier 211, respectively, so that the carrier 211 does not directly collide with the base 222 and the housing 221 when moving along the optical axis direction, and the second lens portion 12 disposed on the carrier 211 is prevented from being damaged due to the collision. The first crush lobes 2116 can be a material having a modulus of elasticity that is less than that of the carrier 211, such as silicone. The first anti-collision boss 2116 may be integrally formed with the carrier 211 by injection molding, or may be fixed to the carrier 211 by bonding.

The upper surface of the first anti-collision boss 2116 of the upper end surface 2113 of the carrier protrudes from the upper elastic member 241, and the lower surface of the first anti-collision boss 2116 of the lower surface 2114 of the carrier protrudes from the lower elastic member 242, so as to avoid the elastic member from colliding with the base 222 or the housing 221 of the fixing portion during the movement of the carrier 211, resulting in damage of the elastic member.

The carrier 211 further comprises first bearing bosses 2117, the first bearing bosses 2117 are respectively arranged on the upper end surface 2113 and the lower end surface 2114 of the carrier, the first bearing bosses 2117 form a height difference with the surface of the main body of the carrier 211, that is, the first bearing bosses 2117 have a height difference with the upper end surface 2113 of the carrier 211, and the first bearing bosses 2117 form a height difference with the lower end surface 2114 of the carrier 211. The first bearing boss 2117 is provided with an elastic mechanism setting position, an elastic inner ring of the upper elastic member 241 is fixedly connected to an elastic mechanism setting position on the upper surface of the carrier 211, an elastic outer ring is fixedly connected to the upper surface of the driving magnet 23, an elastic connecting beam of the upper elastic member 241 extends outwards from the elastic inner ring to the elastic outer ring, an elastic inner ring of the lower elastic member 242 is fixedly connected to an elastic mechanism setting position on the lower surface of the carrier 211, the elastic outer ring is fixed to the base 222, and an elastic connecting beam of the lower elastic member 242 extends outwards from the elastic inner ring to the elastic outer ring. The elastic mechanism on the upper surface of the carrier 211 is positioned lower than the first anti-collision boss 2116, and the height difference formed by the first bearing boss 2117 and the surface of the main body of the carrier 211 enables the upper elastic member 241 and the lower elastic member 242 to be suspended, so as to provide a deformation space for the deformation of the elastic member, and avoid the elastic member colliding with the base 222 or the shell 221 of the fixing portion in the moving process of the carrier 211, so that the elastic member is damaged.

In a specific example of the present application, a part of the outer ring of the upper elastic member 241 is fixedly connected to the inner side surface of the lower stepped surface 22123 of the housing 221, and a part of the outer ring is fixedly connected to the upper surface of the driving magnet 232, that is, the driving magnet 223 and the lower stepped surface 22123 of the housing 221 clamp the upper elastic member 241. The lower step surface 22123 of the housing 221 and the bearing portion 22122 form a height difference, the outer ring of the upper elastic member 241 is disposed on the lower step surface 22123, the elastic connection beam is disposed below the bearing portion 22122, and the height difference between the lower step surface 22123 of the housing 221 and the bearing portion 22122 provides a deformation space for deformation of the elastic connection beam, so as to avoid collision between the elastic member and the base 222 of the fixing portion or the housing 221 during movement of the carrier 211, resulting in damage of the elastic member.

In some alternative embodiments, as shown in fig. 8, the base 222 further includes a base boss 2222. The base boss 2222 integrally extends upward from a peripheral area of the base body 2221 such that an upper surface of the base boss 2222 forms a step having a height difference with an upper surface of the base body 2221. The upper surface of base boss 2222 is provided with elastic mechanism installation position, and the outer loop of lower shell fragment component rigid coupling is in the elastic mechanism installation position on base boss 2222. The difference in height between the upper surface of the base boss 2222 and the surface of the base body 2221 provides a deformation space for the deformation of the elastic connection beam of the lower elastic member 242, so as to prevent the elastic member from being damaged due to collision with the base 222 or the housing 221 of the fixing portion during the movement of the carrier 211. The base body 2221 includes a base upper surface 22212 and a second impact-preventing boss 22213, the second impact-preventing boss 22213 being located on the base upper surface 22212 and being disposed corresponding to the first impact-preventing boss 2116 located on the lower surface of the carrier 211, so as to prevent the elastic member from being damaged by the impact with the base 222 or the housing 221 of the fixing portion during the movement of the carrier 211.

The carrier 211 is suspended in the housing 221 by the elastic connection beam of the upper elastic member 241 and the elastic connection beam of the lower elastic member 242, and a certain movement space is reserved for the carrier 211 by the deformation of the elastic connection beam and a certain restoring force is provided for the carrier 211.

The driving device 20 further includes a circuit assembly 25, where the circuit assembly 25 includes a conductive element 251, the conductive element 251 is disposed on the base 222, one end of the conductive element 251 is connected to the circuit board, and one end is connected to the outer ring of the lower elastic member 242, and the inner ring portion of the lower elastic member 242 is electrically connected to the driving coil 231 located on the columnar protrusion, so as to form a driving circuit, and realize the electrical conduction of the movement of the second lens portion 12. In some embodiments, the conductive element 251 may be integrally formed with the base 222 by an insert molding process.

The driving device 20 further includes a sensing member for sensing the position of the carrier 211, and focusing according to the shooting requirement to obtain a clear image.

Through reasonable design of the driving device 20, namely the first lens part 11 is arranged at the first lens part mounting position 2212 of the shell 221, the third lens part 13 is fixed with the third lens part mounting position 2213 of the shell 221, the shell 221 with a firm and stable structure is used as a mounting reference surface, in a part of preferred embodiments, the shell is formed by integrally forming a metal shell, the stable fixing of the first lens part 11 and the third lens part 13 is realized, the relative positions of the first lens part 11 and the third lens part 13 can be kept stable, the influence of temperature or other environmental factors is smaller, and the reliability is better ensured; meanwhile, the assembly tolerance of the first lens part 11 and the third lens part 13 is smaller, and the assembly consistency is better.

The second lens part 12 is disposed between the first lens part 11 and the third lens part 13, a first gap is reserved between the first lens part 11 and the second lens part 12 along the optical axis direction, the first lens part 11 is supported by the supporting part 22122 of the first lens part mounting position 2212, the second lens part 12 is disposed on the carrier assembly 21, a second gap is reserved between the first anti-collision boss 2116 of the carrier 211 of the carrier assembly 21 and the supporting part 22122 of the shell 221, wherein the first gap is smaller than the second gap, and the second gap limits the mechanical travel distance of the carrier 211 in the up-down movement process under the action of the driving device 20, so that the second lens part 12 collides with the first lens part 11, and the image quality of the optical imaging system is damaged.

According to another aspect of the present application, the present application further provides an assembling method of an optical driving assembly, wherein the assembling method of the optical driving assembly includes the following steps:

(a) Providing an optical lens 10, wherein the optical lens 10 comprises a first lens part 11, a second lens part 12 and a third lens part 13;

(b) Providing a driving device 20, wherein the driving device 20 comprises a carrier assembly 21 and a fixing part 22, and the fixing part 22 comprises a shell 221 for fixing the third lens part 13 and the shell 221;

(c) Preassembling the second lens part 12 on the carrier assembly 21 of the driving device 20, preassembling the first lens part 11 on the housing 211 such that the first lens part 11, the second lens part 12 and the third lens part 13 are disposed along the optical axis direction;

(d) Assembling and calibrating the relative positions of the first lens part 11, the second lens part 12 and the third lens part 13;

(e) The first lens portion 11 is secured to the housing 211 and the second lens portion 12 is secured to the carrier assembly 21.

In some alternative embodiments, the housing 211 of the driving device 20 includes a housing body 2211, a first lens portion mounting location 2212, a third lens portion mounting location 2213, and a relief groove 2214. The first lens portion 2212, the third lens portion mount 2213, and the avoiding groove 2214 are disposed offset in the horizontal direction. The third lens portion 13 is fixed to the third lens portion mounting position 2213, the first lens portion 11 is preassembled to the first lens portion mounting position 2212, the second lens portion 12 is preassembled to the carrier assembly 21, and is disposed between the first lens portion 11 and the third lens portion 13. The escape groove 2214 forms an adjustment space of the second lens part 12. By active calibration, the positions of the first lens part 11 and the second lens part 12 are adjusted, so that assembly calibration and fixation are realized, and the assembly of the optical drive assembly is completed.

In some embodiments, step (b) of the method of assembling an optical drive assembly comprises the steps of:

(b1) Providing a driving device 20, wherein the driving device 20 comprises a carrier assembly 21 and a fixing portion 22, the fixing portion 22 comprises a housing 221 and a base 222, the base 222 is fixed on the housing 221, and the carrier assembly 21 is movably arranged on the fixing portion 22;

(b2) Fixing the third lens portion 13 to the housing 221;

(b3) The base 222 is connected to the third lens portion 13.

In some alternative embodiments, the drive device 20 includes a carrier assembly 21 including a carrier 211 and a slide 212 fixedly coupled to the carrier 211. Slide 212 is a sheet-like structure extending inwardly from carrier 211, and further includes a support 2121 and at least one extension arm 2122, wherein support 2121 is configured to carry second lens portion 12.

In some embodiments, in step (b 1), the carrier assembly 21 is movably connected to the fixing portion 22 by a retaining assembly 24, wherein the fixing portion 22 includes a housing 221 and a base 222, the base 222 is fixed to the housing 221, the carrier assembly 21 is movably disposed on the base 222, and the carrier assembly 21 is movably assembled inside the housing 211 and moves in a space formed by the housing 211 and the base 222. In some embodiments, the bottom of the carrier 211 is supported on the base 222 by a lower elastic member and the top of the carrier 211 is supported inside the housing 221 by an upper elastic member.

The driving device 20 further includes a driving assembly 23, and the driving assembly 23 further includes at least one driving coil 231 and at least one driving magnet 232, where the driving magnet 232 and the driving coil 231 are disposed on the housing 221 and the carrier assembly 21 of the driving device 20, for driving the second lens portion 12 to move along the optical axis.

In step (b 2), the third lens portion 13 is fixed to the third lens portion mounting position 2213 of the housing 211. The third lens portion mounting position 2213 of the housing 211 includes at least one connection arm 22131 and at least one coupling portion 22132. The connecting arm 22131 extends inward from the housing main body 2211, is integrally formed with the connecting portion 22132, and the connecting portion 22132 is fixedly connected to the third lens portion 13, i.e. the connecting portion 22132 is fixedly connected to an upper end surface of the third lens barrel 132 of the third lens portion 13.

Wherein a third lens portion 13 is arranged inside the carrier assembly 21, the carrier assembly 21 being movable relative to the third lens portion 13. The third lens portion 13 is disposed within the through hole 2115 of the carrier 211, beneath the slide 211.

In step (b 3), the base 222 includes a base body 2221, the base body 2221 is provided with a base through hole 22211, and the third lens part 13 is provided in the base through hole 22211 and fixedly connected to the inside of the base body 2221.

The first lens portion mounting portion 2212 of the housing 211 further includes an opening 22121 and at least one bearing portion 22122, the opening 22121 corresponds to the clear aperture of the first lens portion 11, such that light enters the opening 22121 through the first lens portion 11, and the bearing portion 22122 extends inward from the housing body 2211 to the opening 22121 for bearing against the first lens portion 11.

In step (c) and step (d), the second lens portion 12 is preassembled on the carrier assembly 21 of the driving device 20, the second lens portion 12 is preassembled on the support portion 2121 of the slide 212, and the first lens portion 11 is preassembled on the bearing portion 2212 of the first lens portion mounting portion 2212 of the housing 211, so that the first lens portion 11, the second lens portion 12 and the third lens portion 13 are disposed along the optical axis direction to form an optical system for imaging.

The second lens part 12 can be adjusted and moved on the supporting part 2121, the position of the first lens part 11 on the bearing part 2212 of the first lens part mounting position 2212 is adjustable, the position of the second lens part 12 is clamped and adjusted through the avoiding groove 2214, the assembly is carried out based on real-time adjustment of the imaging quality of the whole lens optical imaging system until the imaging requirement parameter is met, and then the first lens part 11 and the second lens part 12 are fixed.

A further advantage of the present application is that the second lens portion 12 is disposed between the first lens portion 11 and the third lens portion 13, and the second lens portion 12 is connected to the driving device 20 through the carrier 21, since the first lens portion 11 and the third lens portion 13 are disposed on the housing 221, there is relatively small assembly tolerance accumulation, and the relative positions of the second lens portion 12 with respect to the first lens portion 11 and the third lens portion 13 perform correction based on imaging quality, and then fixing, so that the optical lens assembly 10 has relatively high imaging quality and high yield. One advantage of the present application is that by such arrangement, each lens portion is directly or indirectly connected to the housing 25, thereby providing a consistent reference datum, easier assembly, and higher stability of the relative position between each lens portion after active focusing.

The second lens portion 12 is supported on the carrier 212, a third gap is reserved between the lower surface of the carrier 212 and the third lens portion 13, a fourth gap is reserved between the first anti-collision boss 2116 of the carrier lower end surface 2114 of the carrier assembly 21 and the upper surface 22212 of the base 222, the third gap is smaller than the fourth gap, and the fourth gap limits the mechanical travel distance of the carrier 211 in the up-and-down movement process of the carrier 211 under the action of the driving device 20, so that the second lens portion 12 and the carrier 212 supported by the second lens portion 12 collide with the third lens portion 13, and the image quality of the optical imaging system is damaged.

On the one hand, the housing 221 provides a first lens portion mounting position 2212 for the first lens portion 11, holds the first lens portion 11 above the second lens portion 12, the housing 221 provides a third lens portion mounting position 2213 for the third lens portion 13, holds the third lens portion 13 below the second lens portion 12, and on the other hand, the space formed by the housing 221, the base 222 and the third lens barrel 132 of the third lens portion 13 defines a travel space for movement of the carrier 211 and the second lens portion 12.

In summary, a specific structure and an assembling method of the optical driving assembly according to the embodiments of the present application are explained, wherein the optical driving assembly solves the contradiction between insufficient driving force and increased motor size of the driving device 20 by driving the second lens portion 12 of the split optical lens to move. By driving the second lens portion 12 to move to achieve focusing, the internal space of the driving device 20 can be effectively utilized, and the height and lateral dimensions of the overall optical driving assembly can be reduced.

Exemplary camera Module

As shown in fig. 9, the image capturing module according to the embodiment of the present application is illustrated, the optical driving component is combined with a photosensitive component 30 to form an image capturing module, and the optical driving component is held on the photosensitive path of the photosensitive component 30, so that the photosensitive component 30 can receive the light projected from the optical driving component to implement imaging.

The photosensitive assembly 30 includes at least one circuit board 31, at least one photosensitive chip 32, and a filter assembly 33, wherein the photosensitive chip 32 is mounted on and electrically connected to the circuit board 31, and the filter assembly 33 is held on a photosensitive path of the photosensitive chip 32.

The circuit board 31 may be used as a substrate of the photosensitive assembly 30 for carrying other parts of the photosensitive assembly 30. The circuit board 31 may have an upper surface 311 and a lower surface 312 opposite to the upper surface 311, the upper surface 311 faces the object side, and the lower surface 312 faces the object side. The wiring board 31 includes a wiring board main body, a connection tape, and a connector portion. The connection belt portion is connected between the circuit board main body and the connector portion to achieve electrical conduction between the circuit board main body and the connector portion, and the connector is used for connection with external equipment.

The photo chip 32 may be a photo coupling element (CCD) or a complementary metal oxide semiconductor element (COMS). And the photo-sensing chip 32 may include a centrally located photo-sensing region and a non-photo-sensing region surrounding the photo-sensing region. The photosensitive region of the photosensitive chip 32 may receive light via an optical system including the first lens portion 11, the second lens portion 12, and the third lens portion 13, and have a photosensitive path corresponding to the photosensitive region.

The photosensitive chip 32 may be disposed on the upper surface 311 of the circuit board 31. Specifically, the photosensitive chip 32 may be mounted on a central area of the upper surface 311 of the wiring board 31.

The photosensitive chip 32 is electrically connected to the circuit board 31. The photosensitive Chip 32 may be electrically connected to the circuit board body of the circuit board 31 by wire bonding (wire bonding), soldering, flip-Chip (FC), rewiring layer (RDL, redistributionLayer), or the like. In some embodiments, the electrical connection may be implemented as a wire bond. After the photosensitive chip 32 is mounted on the circuit board 31, one end of the gold wire is connected to the photosensitive chip 32 by a gold wire bonding process, and the other end is connected to the circuit board 31.

In some embodiments, the wiring board 31 has a mounting groove that accommodates the photosensitive chip 32, and the shape of the mounting groove corresponds to the shape of the photosensitive chip 32. Illustratively, the depth of the mounting groove may be equal to the thickness of the circuit board 31. The photosensitive assembly 30 may further include a reinforcing plate, and when the thickness of the photosensitive chip 32 is less than or equal to the thickness of the circuit board 31, the photosensitive chip 32 may be completely embedded in the mounting groove of the circuit board 31, and a reinforcing plate, such as a steel plate, may be further provided on the lower surface 312 of the circuit board 31 for reinforcing the strength of the circuit board 31.

The filter assembly 33 includes a filter element 331, and the filter element 331 is held on the photosensitive path of the photosensitive chip 32 for filtering the imaging light entering the photosensitive chip 32. In some embodiments, the filter assembly 33 further includes a bracket 332 for supporting and holding the filter element 331. The filter element 331 is mounted on the bracket 332, forms the filter assembly 33, and corresponds to at least a portion of the photosensitive area of the photosensitive chip 32 to be held on the photosensitive path of the photosensitive chip 32.

The photosensitive assembly 30 further includes at least one electronic component 34, and the electronic component 34 is disposed on the circuit board 31 and electrically connected to the circuit board 31. The electronic component 34 may be disposed on the upper surface 311 of the circuit board 31 and spaced apart from the photosensitive chip 32. Specifically, the electronic component 34 may be mounted on an edge region of the upper surface 311 of the circuit board 31 and spaced apart from the photosensitive chip 32 by a certain distance. The electronic components 34 may be implemented, for example, as capacitors, resistors, driving devices, etc.

In the camera module provided by the application, the optical driving assembly comprises the first lens part 11, the second lens part 12 and the third lens part 13, wherein the positions of the first lens part 11 and the third lens part 13 are in a fixed state and the second lens part 12 is in an adjustable state in the imaging process of the optical system.

The driving device 20 is fixedly connected with the second lens part 12, and under the action of the driving device 20, the second lens part 12 can move along the direction of the optical axis in the working process so as to realize focusing.

In some embodiments, the camera module further includes an upper cover having a through hole, the first lens portion 11 is accommodated in the through hole, and the light entrance aperture of the first lens portion 11 is consistent with the center of the through hole, and the upper cover is fixedly connected with the first lens barrel 112 of the first lens portion 11 and the first lens portion mounting position 2212 of the housing 221 to form a protection structure for preventing stray light and dust from entering.

Claims

1. A method of assembling an optical drive assembly, comprising:

2. The assembly method of claim 1, wherein the housing includes a housing body, a first lens portion mounting location, a third lens mounting location, and an escape groove, the first lens portion mounting location, the third lens mounting location, and the escape groove being disposed offset in a horizontal direction.

3. The method of assembling of claim 2, wherein in step (b), the steps of:

(b2) Fixing the third lens part with the shell;

(b3) And connecting the base with the third lens part.

4. A method of assembling as claimed in claim 3, wherein in step (b 1), the carrier member is movably connected to the fixing portion by a holding member, and moves in a space defined by the housing and the base.

5. The assembling method according to claim 4, wherein the step (b 2) fixes the third lens portion to the third lens portion mounting position of the housing.

6. The assembly method of claim 5, wherein the third lens portion mounting location of the housing includes at least one connecting arm and at least one coupling portion, the connecting arm extending inwardly from the housing body and integrally formed with the connecting portion, the coupling portion being fixedly coupled to the third lens portion.

7. The method of assembly of claim 6, wherein the carrier assembly comprises a carrier and a slide fixedly attached to the carrier, the slide being a sheet-like structure extending inwardly from the carrier and including a support portion for carrying the second lens portion and at least one extension arm.

8. The assembly method according to claim 7, wherein the upper end surface of the housing body near the object side extends inward to form the first lens portion mounting position, the first lens portion mounting position includes an opening and at least one bearing portion, the opening corresponds to the first lens portion, so that light enters through the first lens portion, and the bearing portion is used for bearing against the first lens portion.

9. The method of assembling according to claim 8, wherein in the step (b 3), the second lens portion is preassembled to the support portion of the slide, and the first lens portion is preassembled to the bearing portion of the first lens portion mounting location.

10. The method of assembling of claim 9, wherein step (d) further comprises: the second lens part can be adjusted and moved on the supporting part, the position of the first lens part on the bearing part is adjustable, the position of the second lens part is clamped and adjusted through the avoiding groove, and the assembly is carried out based on real-time adjustment of the imaging quality of the whole lens optical imaging system.