CN111090158B

CN111090158B - Clamping device, clamping method, optical lens and camera module assembly method

Info

Publication number: CN111090158B
Application number: CN201811242242.6A
Authority: CN
Inventors: 杨旭; 王雷
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2018-10-24
Filing date: 2018-10-24
Publication date: 2022-02-25
Anticipated expiration: 2038-10-24
Also published as: CN111090158A; WO2020082862A1

Abstract

The invention provides a clamping method of an optical actuator assembly, wherein the optical actuator assembly comprises a motor shell, a motor carrier and an optical component fixed on the motor carrier, wherein the motor carrier is movably connected with the motor shell; the clamping method of the optical actuator assembly comprises the following steps: clamping the optical component and the motor housing using a clamping device, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the optical component, and the second clamp clamps the motor housing; and fixing the relative positions of the first jig and the second jig so that the relative positions of the optical component and the motor housing are kept unchanged. The invention also provides an optical lens, an assembling method of the camera module and a clamping device. The invention can avoid the movement of the optical component relative to the motor shell and can improve the assembly precision of the optical lens and the camera module.

Description

Clamping device, clamping method, optical lens and camera module assembly method

Technical Field

The invention relates to the technical field of optical imaging, in particular to a clamping device and a clamping method for an optical actuator assembly, and an assembling method of an optical lens and a camera module.

Background

With the popularization of mobile electronic devices, technologies related to camera modules applied to mobile electronic devices for helping users to obtain images (e.g., videos or images) have been rapidly developed and advanced, and in recent years, camera modules have been widely applied to various fields such as medical treatment, security, industrial production, and the like.

In order to meet the increasingly wide market demands, a high-pixel, small-size and large-aperture diaphragm is an irreversible development trend of the existing camera module. However, the need to achieve high pixel, small size, large aperture in the same imaging mold is very difficult. For example, the compact development of mobile phones and the increase of the mobile phone screen occupation ratio make the space inside the mobile phone available for the front camera module smaller and smaller, and the market puts forward higher and higher demands on the imaging quality of the camera module.

In the field of compact camera modules (e.g., camera modules for mobile phones), lenses are important components of camera modules, directly affecting the imaging quality of camera modules. In the multi-group lens, the lens components are actively aligned and connected by using a rubber material, so that a complete optical system is formed. When assembling the automatic focusing camera module, need anchor clamps centre gripping motor to carry out initiative calibration, at the initiative calibration in-process, the stability influence imaging quality of camera lens. In the process of assembling the split-type lens module, the lens is divided into a plurality of lens components, wherein the lower lens component and the motor are assembled into an optical actuator component in advance, then the lens components, the optical actuator component and the photosensitive component are actively calibrated, and bonding and fixing are carried out after the active calibration is completed.

At present, in the active calibration and bonding process, a clamp only clamps a motor, but shaking is generated between a lower lens component and the motor, so that the active calibration effect is influenced, after the active calibration is completed, the lower lens component needs to be subjected to glue drawing operation to fix a first lens component and a second lens component, and the lower lens component is not directly clamped by the clamp in the glue drawing process and the curing process, so that position deviation is generated, and the quality of an optical lens and a camera module is finally influenced.

The invention provides a clamping method of an optical actuator assembly, so that the relative positions of a lower lens component and a motor shell are kept unchanged, the positions of the lower lens component and the motor shell are kept fixed in the active calibration and bonding process, and the imaging quality of an optical lens and a camera module is further ensured.

Disclosure of Invention

The present invention aims to provide a solution that overcomes at least one of the drawbacks of the prior art.

According to one aspect of the present invention, there is provided a method of clamping an optical actuator assembly comprising a motor housing, a motor carrier and an optical component secured to the motor carrier, wherein the motor carrier is movably connected to the motor housing; the clamping method of the optical actuator assembly comprises the following steps:

1) clamping the optical component and the motor housing using a clamping device, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the optical component, and the second clamp clamps the motor housing; and

2) fixing the relative positions of the first and second clamps so that the relative positions of the optical component and the motor housing remain unchanged.

Wherein in the step 1), in a stationary state in which the optical actuator assembly is not energized, the optical component and the motor housing are respectively clamped by the first clamp and the second clamp; or energizing the optical actuator assembly to move the optical component relative to the motor housing to a selected position within a range of travel, and then clamping the optical component and the motor housing by the first clamp and the second clamp, respectively.

Wherein in the step 1), the top surface of the optical component is above the top surface of the motor housing.

Wherein, in the step 1), when the second jig clamps the motor housing, the bottom surface of the motor housing is below the bottom surface of the second jig.

Wherein, in the step 1), the optical component and the motor housing are simultaneously clamped using the first jig and the second jig.

Wherein the step 1) comprises:

a) clamping the motor housing by using the second clamp; and

b) the optical component is then clamped using the first clamp.

According to another aspect of the present invention, there is provided an assembling method of an optical lens, including:

10) preparing a first lens part and an optical actuator assembly separated from each other, wherein the optical actuator assembly includes a motor housing, a motor carrier movably connected with the motor housing, and a second lens part fixed to the motor carrier, the first lens part includes at least one first lens, and the second lens part includes a second barrel and at least one second lens mounted within the second barrel;

20) pre-positioning the first lens component and the optical actuator assembly such that the at least one first optic and the at least one second optic together comprise an imageable optical system;

30) performing active calibration according to the measured imaging result of the optical system, determining the relative positions of the first lens component and the second lens component, and keeping the relative positions of the second lens component and the motor housing unchanged by clamping the optical actuator assembly in the active calibration process; and

40) and bonding the first lens part and the second lens part to fix the relative positions of the first lens part and the second lens part.

In the step 20), a clamping device is first used to clamp the second lens component and the motor housing, where the clamping device includes a first clamp and a second clamp, the first clamp clamps the second lens component, and the second clamp clamps the motor housing; then, in the pre-positioning process, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the second lens component and the motor shell are kept unchanged.

Wherein in the step 30), during the active calibration, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the second lens component and the motor housing are kept unchanged.

Wherein in the step 40), in the bonding process, the relative position of the first clamp and the second clamp is fixed, so that the relative position of the second lens component and the motor housing is kept unchanged.

Wherein none of the motors are energized.

In the step 20), the first lens component further includes a first lens barrel, and the at least one first lens is mounted in the first lens barrel.

In the step 20), when the first fixture clamps the second lens component, the bottom surface of the first fixture is higher than the top surface of the motor, and the height of the bottom surface of the first fixture, which is higher than the top surface of the motor, is less than or equal to 1.0 mm.

According to another aspect of the present invention, there is provided a method for assembling a camera module, including:

100) preparing a photosensitive assembly and an optical lens separated from each other, wherein the optical lens includes an optical actuator assembly including a motor housing, a motor carrier, and an optical component fixed to the motor carrier, wherein the motor carrier is movably connected with the motor housing;

200) pre-positioning the optical lens and the photosensitive assembly to enable the optical lens and the photosensitive assembly to jointly form a camera system;

300) performing active calibration according to the actual measurement shooting result of the camera system, and determining the relative position of the optical lens and the photosensitive assembly, wherein in the active calibration process, the relative position of the optical component and the motor shell is kept unchanged by clamping the optical actuator assembly; and

400) and bonding the optical lens and the photosensitive assembly to fix the relative positions of the optical lens and the photosensitive assembly.

In step 200), a clamping device is used to clamp the optical component and the motor housing, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the optical component, and the second clamp clamps the motor housing; then, in the pre-positioning process, the relative positions of the first jig and the second jig are fixed, so that the relative positions of the optical component and the motor housing are kept unchanged.

Wherein in the step 30), during the active calibration, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the optical component and the motor housing are kept unchanged.

Wherein in the step 40), the relative position of the first clamp and the second clamp is fixed in the bonding process, so that the relative position of the optical component and the motor housing is kept unchanged.

Wherein none of the motors are energized.

In the step 200), when the optical component is clamped by the first clamp, the bottom surface of the first clamp is higher than the top surface of the motor, and the height of the first clamp is not more than 1.0 mm.

According to yet another aspect of the present invention, there is provided a clamping device characterized by comprising a first clamp and a second clamp, each having a geometric center, wherein a distance between the geometric center of the first clamp and the geometric center of the second clamp is 0.9mm to 5.0 mm.

Wherein a straight line passing through a geometric center of the first jig and a geometric center of the second jig is a clamping axis, and the first jig and the second jig are arranged in an overlapping manner in a direction of the clamping axis.

Wherein the clamping device further comprises a first drive device and a second drive device for driving the first clamp and the second clamp, respectively, the first drive device and the second drive device being arranged such that projections onto a projection plane perpendicular to the clamping axis overlap.

Wherein the clamping device further comprises a first drive and a second drive for driving the first clamp and the second clamp, respectively, the first drive and the second drive being arranged such that their projections onto a projection plane parallel to the clamping axis overlap, wherein the projection plane passes through a midpoint of a line connecting a geometric center of the first drive and a geometric center of the second drive.

Wherein the first clamp has a first jaw and a second jaw, the connecting portion of the first jaw having an end connected to the clamping portion of the first jaw and a root connected to the first drive, the end of the connecting portion of the first jaw extending toward but not beyond the clamping axis relative to the root of the connecting portion of the first jaw; the connecting portion of the second clamping jaw has an end portion connected with the clamping portion of the second clamping jaw and a root portion connected with the first driving device, and the end portion of the connecting portion of the second clamping jaw extends towards the clamping axis relative to the root portion of the connecting portion of the second clamping jaw and exceeds the clamping axis.

Wherein the second clamp has a third jaw and a fourth jaw, the connecting portion of the third jaw having an end connected to the clamping portion of the third jaw and a root connected to the second drive, the end of the connecting portion of the third jaw extending toward but not beyond the clamping axis relative to the root of the connecting portion of the third jaw; the connecting portion of the fourth clamping jaw has an end portion connected with the clamping portion of the fourth clamping jaw and a root portion connected with the second driving device, and the end portion of the connecting portion of the fourth clamping jaw extends towards the clamping axis relative to the root portion of the connecting portion of the fourth clamping jaw and exceeds the clamping axis.

The first clamp is provided with two clamping jaws, and the thickness of the two clamping jaws of the first clamp is 0.2-2 mm.

Wherein the second clamp is provided with two clamping jaws, and the thickness of the two clamping jaws of the second clamp is 1.5mm-4.0 mm.

The inner sides, used for clamping articles, of the two clamping jaws of the first clamp are arc-shaped surfaces, and the two clamping jaws of the first clamp are suitable for clamping an optical lens.

Wherein the inner side of the two clamping jaws of the second clamp for clamping the article is a plane, and the two clamping jaws of the second clamp are suitable for clamping the optical actuator.

Compared with the prior art, the invention has at least one of the following technical effects:

1. the invention uses a clamping device to clamp the optical component and the motor shell, and fixes the relative position of the first clamp and the second clamp, so as to keep the relative position of the optical component and the motor shell unchanged, and improve the assembly precision of the optical lens and the camera module.

2. When the optical component is clamped by the first clamp, the bottom surface of the first clamp is higher than the top surface of the motor, and the height of the bottom surface of the first clamp, which is higher than the top surface of the motor, is not more than 1.0mm, so that the abrasion of the first clamp to the top surface of the motor is avoided.

3. The distance between the geometric center of the first clamp and the geometric center of the second clamp is 0.9mm-5.0mm, and the distance is suitable for clamping the optical component and the motor shell simultaneously.

4. The first and second drive means are arranged such that the projections onto a projection plane perpendicular to the clamping axis overlap, thereby reducing the width of the clamping means.

5. The first and second drive means are arranged such that their projections onto a plane of projection parallel to the clamping axis overlap, wherein the plane of projection passes through the midpoint of the line connecting the geometric centre of the first drive means and the geometric centre of the second drive means, thereby reducing the thickness in a direction parallel to the clamping axis.

6. The thickness of the two clamping jaws of the first clamp is 0.2 mm-2 mm, the thickness of the two clamping jaws of the second clamp is 1.5mm-4.0mm, and the two clamping jaws are respectively suitable for clamping an optical component and a motor shell.

Drawings

Exemplary embodiments are illustrated in referenced figures of the drawings. The embodiments and figures disclosed herein are to be regarded as illustrative rather than restrictive.

FIG. 1 shows a perspective view of a clamping device according to one embodiment of the invention;

FIG. 2 shows a top view of a first clamp of a clamping device of one embodiment of the present invention;

FIG. 3 shows a top view of a second clamp of the clamping device of one embodiment of the present invention;

FIG. 4 shows a perspective view of a clamping device according to another embodiment of the invention;

FIG. 5 shows a top view of a first clamp of a clamping device according to another embodiment of the invention;

FIG. 6 shows a top view of a second clamp of a clamping device according to another embodiment of the invention;

FIG. 7 illustrates a cross-sectional schematic view of an optical actuator assembly in accordance with one embodiment of the present invention;

FIG. 8 illustrates a flow chart of a clamping method of an optical actuator assembly according to one embodiment of the present invention;

FIG. 9 shows a schematic cross-sectional view of an optical lens of one embodiment of the invention;

FIG. 10A illustrates a relative position adjustment in active calibration in one embodiment of the invention;

FIG. 10B illustrates rotational adjustment in active calibration of another embodiment of the present invention;

FIG. 10C illustrates a relative position adjustment with added v, w direction adjustment in active calibration according to yet another embodiment of the present invention.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that the expressions first, second, etc. in this specification are used only to distinguish one feature from another feature, and do not indicate any limitation on the features. Thus, a first body discussed below may also be referred to as a second body without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "has," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

As used herein, the terms "substantially," "about," and the like are used as terms of table approximation and not as terms of table degree, and are intended to account for inherent deviations in measured or calculated values that will be recognized by those of ordinary skill in the art.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 shows a perspective view of a clamping device according to an embodiment of the invention. The clamping device 1 as shown in fig. 1 comprises a first clamp 10, a second clamp 20, a first drive 30 and a second drive 40. The first and

second driving devices

30 and 40 are used to drive the first and

second clamps

10 and 20, respectively. Fig. 2 shows a top view of the first clamp 10 of the clamping device of one embodiment of the invention. As shown in fig. 2, the first clamp 10 has a geometric center 11.

Fig. 3 shows a top view of the second clamp 20 of the clamping device of one embodiment of the invention. As shown in fig. 3, the second clamp 20 has a geometric center 21. Wherein the distance between the geometric center 11 of the first clamp 10 and the geometric center 21 of the second clamp 20 is 0.9mm-5.0mm, which is the optimal distance for the clamping device to clamp the optical actuator assembly. In the present embodiment, a straight line passing through the geometric center 11 of the first clamp 10 and the geometric center 21 of the second clamp 20 is a clamping axis, and the first clamp 10 and the second clamp 20 are arranged to overlap in the direction of the clamping axis. As shown in fig. 1, the projections of the first drive device 30 and the second drive device 40 on a projection plane perpendicular to the clamping axis overlap, i.e., the first drive device 30 and the second drive device 40 overlap each other as viewed in a direction along the clamping axis. The overlapping arrangement of the drive means in the direction of the clamping axis allows a reduction in the size of the clamping means in the direction perpendicular to the clamping axis, and the routing of the tail of the drive means can be arranged on one side, which arrangement facilitates the co-operation of the clamping means with the device in the direction perpendicular to the clamping axis.

The holding device in the above embodiment is adapted to hold an optical actuator assembly, wherein the optical actuator assembly comprises a motor housing, a motor carrier and an optical component fixed to the motor carrier, wherein the motor carrier is movably connected to the motor housing (for example, by using a spring or a reed), and the holding device is adapted to hold the optical component and the motor housing, wherein the first clamp holds the optical component, and the second clamp holds the motor housing, and the holding device is capable of keeping the relative positions of the optical component and the motor housing unchanged.

Further, in one embodiment, referring to fig. 2, the inner side of the two clamping jaws of the first clamp 10 for clamping the article is an arc-shaped surface, which makes the first clamp 10 suitable for clamping the optical lens, wherein the outer side surface of the optical lens is circular, and the arc-shaped surface of the two clamping jaws of the first clamp 10 for clamping the inner side of the article is suitable for matching with the outer side surface of the optical lens.

Further, in one embodiment, referring to fig. 3, the inner sides of the two jaws of the second gripper 20 for gripping the article are flat surfaces which make the second gripper 20 suitable for gripping the optical actuator, wherein the outer side of the optical actuator is square and the flat surfaces of the two jaws of the second gripper 20 for gripping the inner side of the article are suitable for matching with the outer side of the optical actuator.

Further, in one embodiment, the first clamp 10 has two clamping jaws, and the thickness of the two clamping jaws of the first clamp 10 is 0.2mm to 2mm, wherein the thickness of the two clamping jaws of the first clamp 10 is suitable for clamping a lens component of an optical lens.

Further, in an embodiment, the second clamp 20 has two clamping jaws, and the thickness of the two clamping jaws of the second clamp 20 is 1.5mm-4.0mm, wherein the thickness of the two clamping jaws of the second clamp 20 is suitable for clamping the optical actuator of the optical lens.

Fig. 4 shows a perspective view of a clamping device according to another embodiment of the invention. The clamping device 1 ' as shown in fig. 4 comprises a first clamp 10 ', a second clamp 20 ', a first drive 30 ' and a second drive 40 '. The first and second driving means 30 ', 40' are adapted to drive the first and second clamps 10 ', 20', respectively. Fig. 5 shows a top view of the first clamp 10 'of a clamping device 1' according to another embodiment of the invention. As shown in fig. 5, the first clamp 10 'has a geometric center 11'. Fig. 6 shows a top view of a second clamp 20 'of a clamping device 1' according to another embodiment of the invention. As shown in fig. 6, the second clamp 20 'has a geometric center 21'. Wherein the distance between the geometric center 11 'of the first clamp 10' and the geometric center 21 'of the second clamp 20' is 0.9mm-5.0mm, which is the optimal distance for the clamping device to clamp the optical actuator assembly. In the present embodiment, a straight line passing through the geometric center 11 'of the first clamp 10' and the geometric center 21 'of the second clamp 20' is a clamping axis, and the first clamp 10 'and the second clamp 20' are arranged such that their projections on a projection plane parallel to the clamping axis overlap. As shown in fig. 4, the projections of the first driving device 30 'and the second driving device 40' on a projection plane parallel to the clamping axis overlap, wherein the projection plane passes through the midpoint of the line connecting the geometric center of the first driving device 30 'and the geometric center of the second driving device 40'. Said first drive means 30 'and said second drive means 40' are arranged side by side in the direction of said gripping axis, i.e. said first drive means 30 'and said second drive means 40' are arranged in parallel as seen in the direction of the gripping axis. The parallel arrangement of the drive means in the direction of the clamping axis allows the size of the clamping means in the direction of the clamping axis to be reduced and the wiring of the tail of the drive means can be arranged on both sides, which arrangement facilitates the co-operation of the clamping means with the device in a direction parallel to the clamping axis. With reference to fig. 5, the first clamp 10 'has a first jaw a and a second jaw b, the connection portion a1 of the first jaw a having an end a11 connected to the gripping portion of the first jaw a and a root a12 connected to the first drive means, the end a11 of the connection portion of the first jaw a extending towards the gripping axis (geometric centre 11') but not beyond the gripping axis with respect to the root a12 of the connection portion of the first jaw a; the connecting portion b1 of the second jaw b has an end b11 connected to the clamping portion of the second jaw b and a root b12 connected to the first driving device, and the end b11 of the connecting portion b1 of the second jaw b extends toward and beyond the clamping axis (geometric center 11') with respect to the root b12 of the connecting portion of the second jaw b. With reference to fig. 6, the second clamp has a third jaw c and a fourth jaw d, the connection portion c1 of the third jaw c having an end c11 connected to the gripping portion of the third jaw c and a root c12 connected to the second drive means, the end c11 of the connection portion c1 of the third jaw c extending towards the gripping axis (geometric centre 21') but not beyond it with respect to the root c12 of the connection portion c1 of the third jaw c; the connecting portion d1 of the fourth jaw d has an end d11 connected to the clamping portion of the fourth jaw d and a root d12 connected to the second driving device, and the end d11 of the connecting portion d1 of the fourth jaw d extends toward and beyond the clamping axis (geometric center 21') with respect to the root d12 of the connecting portion d1 of the fourth jaw d.

FIG. 7 illustrates a cross-sectional schematic view of an optical actuator assembly in accordance with one embodiment of the present invention. As shown in fig. 7, the optical actuator assembly 2000 includes a motor 300 and an optical component (a second lens component 200), wherein the motor 300 includes a motor housing 301 and a motor carrier 302, the second lens component 200 includes at least one second lens 201 and a second lens barrel 202, the second lens component 200 is fixed to the motor carrier 302, and the motor carrier 302 is movably connected with the motor housing 301 (for example, by using a spring plate or a reed).

FIG. 8 illustrates a flow chart of a clamping method of an optical actuator assembly according to one embodiment of the invention. Referring to fig. 8, the clamping method includes the following steps S10 to S20:

s10: the optical component (the second lens component 200) and the motor housing 301 in fig. 7 are clamped using a clamping device.

Wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the second lens component 200, and the second clamp clamps the motor housing 301. Wherein, the optical component is the second lens component 200 in the present embodiment, and the optical component may be the whole lens in other embodiments.

S20: fixing the relative positions of the first and second clamps so that the relative positions of the optical component and the motor housing remain unchanged.

The motor housing 301 and the motor carrier 302 in fig. 7 are movably connected, so that the optical component fixed to the motor carrier 302 is easily moved during the assembling process, and by clamping the optical component 200 and the motor housing 301 respectively by using a clamping device having a first clamp and a second clamp, the relative position of the optical component and the motor housing can be kept unchanged, so that the fixation of the optical component and the motor housing is maintained during the assembling process of the optical lens, and the assembling accuracy of the optical lens is improved.

Further, in one embodiment, in step S10, in a rest state where the optical actuator assembly is not energized, the optical component and the motor housing are respectively clamped by the first clamp and the second clamp; or energizing the optical actuator assembly to move the optical component relative to the motor housing to a selected position within a range of travel, and then clamping the optical component and the motor housing by the first clamp and the second clamp, respectively.

In this embodiment, the first and second clamps may fix the optical component at any position in its range of travel relative to the motor housing 301.

Further, in one embodiment, in step S10, the top surface of the optical component is above the top surface of the motor housing. In this embodiment, the top surface of the optical component is above the top surface of the motor housing 301, thereby being adapted to allow the first clamp to clamp the optical component.

Further, in an embodiment, in step S10, the method further includes: when the second jig clamps the motor housing, the bottom surface of the motor housing is below the bottom surface of the second jig.

In this embodiment, the bottom surface of the motor housing is below the bottom surface of the second fixture, so that the second fixture is suitable for connecting the motor housing and the photosensitive component while clamping the motor housing 302, thereby completing the assembly of the camera module.

Further, in an embodiment, in step S10, the method further includes: clamping the optical component and the motor housing simultaneously using the first clamp and the second clamp.

Further, in one embodiment, the step 10) includes:

a) clamping the motor housing by using the second clamp; and

b) the optical component is then clamped using the first clamp.

Fig. 9 shows a schematic cross-sectional view of an optical lens of an embodiment of the invention. As shown in fig. 9, the optical lens 1000 includes a motor 300, a second lens part 200, and a first lens part 100. The motor 300 includes a motor housing 301 and a motor carrier 302, the second lens part 200 includes at least one second lens 201 and a second lens barrel 202, and the first lens part 100 includes at least one first lens 101 and a second lens barrel 102. In fig. 9, the first lens part 100 includes at least one first lens 101 and a second lens barrel 102, but in other embodiments the first lens part 100 may not include the second lens barrel 102. The second lens component 200 is fixed to the motor carrier 302, wherein the motor carrier 302 is movably connected with the motor housing 301 (for example, by using a spring plate or a spring plate).

There is also provided, in accordance with an embodiment of the present invention, an optical lens assembly method, including:

s100: referring to fig. 9, a first lens part 100 and an optical actuator assembly are prepared, which are separated from each other, wherein the optical actuator assembly includes a motor housing 301, a motor carrier 302, and a second lens part 200 fixed to the motor carrier 301, wherein the motor carrier 302 is movably connected to the motor housing 301, the first lens part 100 includes at least one first lens 101, and the second lens part 200 includes a second barrel 202 and at least one second lens 201 mounted in the second barrel 202.

S200: the first lens part 100 and the optical actuator assembly are pre-positioned such that the at least one first lens 101 and the at least one second lens 201 together form an imageable optical system.

S300: and performing active calibration according to the measured imaging result of the optical system, determining the relative positions of the first lens component 100 and the second lens component 200, enabling the optical axis of the first lens component to be coincident with the optical axis of the second lens component, and keeping the relative positions of the second lens component 200 and the motor shell 301 unchanged by clamping the optical actuator assembly in the active calibration process.

S400: the first lens part 100 and the second lens part 200 are bonded to fix the relative positions of the first lens part 100 and the second lens part 200.

The optical lens assembling method enables the relative position of the second lens component 200 and the motor shell 301 to be kept unchanged in the active calibration and bonding process, and can improve the assembling precision of the optical lens.

Further, in one embodiment, in step S200, the second lens component 200 and the motor housing 301 are clamped by using a clamping device, wherein the clamping device includes a first clamp and a second clamp, the first clamp clamps the second lens component 200, and the second clamp clamps the motor housing 301; then, in the pre-positioning process, the relative positions of the first jig and the second jig are fixed, so that the relative positions of the second lens part 200 and the motor housing 301 are kept unchanged.

Further, in one embodiment, in step S300, during the active calibration, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the second lens component and the motor housing are kept unchanged.

Further, in one embodiment, in step S400, during the bonding process, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the second lens component 200 and the motor housing 301 are kept unchanged.

Further, in one embodiment, none of the motors are energized.

Further, in an embodiment, in step S100, the first lens part 100 further includes a first barrel 102, and the at least one first lens 101 is mounted in the first barrel 102.

Further, in one embodiment, in step S200, the method further includes: when the first clamp clamps the second lens component 200, the bottom surface of the first clamp is higher than the top surface of the motor, and the height of the height is less than or equal to 1.0 mm.

In this embodiment, the bottom surface of the first clamp and the top surface of the motor are kept at a proper clearance, so that the abrasion of the top surface of the motor by the first clamp can be avoided.

According to an embodiment of the present invention, there is also provided a camera module assembling method, including:

s1000: preparing a photosensitive assembly and an optical lens to be separated from each other, wherein the optical lens includes an optical actuator assembly including a motor housing, a motor carrier, and an optical member fixed to the motor carrier, wherein the motor carrier is movably connected with the motor housing.

S2000: and pre-positioning the optical lens and the photosensitive assembly to enable the optical lens and the photosensitive assembly to jointly form a camera system.

S3000: and performing active calibration according to the measured shooting result of the camera system, and determining the relative position of the optical lens and the photosensitive assembly, wherein in the active calibration process, the relative position of the optical component and the motor shell is kept unchanged by clamping the optical actuator assembly.

S4000: and bonding the optical lens and the photosensitive assembly to fix the relative positions of the optical lens and the photosensitive assembly.

The camera module assembly method enables the relative position of the optical component and the motor shell to be kept unchanged in the active calibration process, and can improve the assembly precision of the camera module.

Further, in one embodiment, in step S2000, the optical component and the motor housing are clamped by using a clamping device, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the optical component, and the second clamp clamps the motor housing; then, in the pre-positioning process, the relative positions of the first jig and the second jig are fixed, so that the relative positions of the optical component and the motor housing are kept unchanged.

Further, in one embodiment, in step S3000, during the active calibration, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the optical component and the motor housing are kept unchanged.

Further, in one embodiment, in step S4000, the relative positions of the first jig and the second jig are fixed during the bonding process, so that the relative positions of the optical member and the motor housing are maintained.

Further, in one embodiment, in step S2000, the method further includes: when the first clamp clamps the optical component, the bottom surface of the first clamp is higher than the top surface of the motor, and the height of the first clamp is less than or equal to 1.0 mm.

Further, the active calibration described herein may adjust the relative positions of the first lens component 100 and the second lens component 200 in multiple degrees of freedom. The active calibration refers to controlling one lens component to adjust relative to the other lens component to calibrate the whole optical system according to the actually measured resolving power of the optical system, so that the optical axes of the lens components are adjusted consistently, and the actually measured resolving power of the optical system reaches the standard.

FIG. 10A illustrates a relative position adjustment in active calibration in one embodiment of the invention. In this adjustment manner, the first lens component 100 can move along the x, y, and z directions relative to the second lens component 200 (i.e., the relative position adjustment in this embodiment has three degrees of freedom). Where the z-direction is the direction along the optical axis and the x, y-directions are the directions perpendicular to the optical axis. The x, y directions both lie in a tuning plane P within which translation can be resolved into two components in the x, y directions.

FIG. 10B illustrates rotational adjustment in active calibration according to another embodiment of the present invention. In this embodiment, the relative position adjustment has an increased rotational degree of freedom, i.e., adjustment in the r direction, in addition to the three degrees of freedom of fig. 10A. In the present embodiment, the adjustment in the r direction is a rotation in the adjustment plane P, i.e. a rotation around an axis perpendicular to the adjustment plane P.

Further, fig. 10C shows a relative position adjustment manner with v and w direction adjustments added in the active calibration according to yet another embodiment of the present invention. Where the v direction represents the rotation angle of the xoz plane, the w direction represents the rotation angle of the yoz plane, and the rotation angles of the v direction and the w direction may be combined into a vector angle representing the total tilt state. That is, by the v-direction and w-direction adjustment, the tilt posture of the first lens component 100 with respect to the second lens component 200 (i.e., the tilt of the optical axis of the first lens component 100 with respect to the optical axis of the second lens component 200) can be adjusted.

The adjustment of the above-mentioned six degrees of freedom x, y, z, r, v, and w may affect the imaging quality of the optical system (e.g., affect the magnitude of the resolution). In other embodiments of the present invention, the relative position adjustment may be performed by adjusting only any one of the six degrees of freedom, or by a combination of any two or more of the six degrees of freedom.

Further, in an embodiment, in the active calibration step, the movement further comprises a translation in the adjustment plane, i.e. a movement in the x, y direction.

Further, in one embodiment, the active calibration further comprises: and adjusting and determining the included angle of the axis of the first lens component 100 relative to the axis of the second lens component 200, namely the adjustment in the w and v directions according to the measured resolution force of the optical system. In the assembled optical lens or camera module, an included angle between the axis of the first lens component 100 and the axis of the second lens component 200 may be different from zero.

Further, in one embodiment, the active calibration further comprises: moving the first lens component 100 in a direction perpendicular to the adjustment plane (i.e. adjustment in z-direction), the relative position between the first lens component 100 and the second lens component 200 in the direction perpendicular to the adjustment plane is determined from the measured resolving power of the optical system.

Further, in one embodiment, in the pre-positioning step, a gap is formed between the bottom surface of the first lens component 100 and the top surface of the second lens component 200.

In one embodiment, in the active calibration step, the second lens component 200 may be fixed, the first lens component 100 may be held by a clamp, and the first lens component 100 may be moved by a six-axis movement mechanism connected to the clamp, so as to achieve the above-mentioned relative movement between the first lens component 100 and the second lens component 200 in six degrees of freedom. Wherein the clip may bear against or partially bear against a side of the first lens component 100, thereby clipping the first lens component 100.

In the above embodiments, as an example, the optical lens is described as including the first lens part and the second lens part. However, the number of lens components in the optical lens is not particularly limited, i.e., the number of lens components is not limited to two, and may be three or four, etc., depending on the particular design needs.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A method of clamping an optical actuator assembly, the optical actuator assembly comprising a motor housing, a motor carrier and an optical component secured to the motor carrier, wherein the motor carrier is movably connected to the motor housing; the clamping method of the optical actuator assembly comprises the following steps:

2) fixing the relative positions of the first jig and the second jig so that the relative positions of the optical component and the motor housing, which is located at the outer periphery of the optical component, are maintained.

2. The holding method according to claim 1, wherein in the step 1), in a rest state in which the optical actuator assembly is not energized, the optical component and the motor housing are held by the first and second clamps, respectively; or energizing the optical actuator assembly to move the optical component relative to the motor housing to a selected position within a range of travel, and then clamping the optical component and the motor housing by the first clamp and the second clamp, respectively.

3. The clamping method according to claim 1, wherein in step 1), the top surface of the optical component is above the top surface of the motor housing.

4. The clamping method according to claim 3, wherein in the step 1), when the second clamp clamps the motor housing, a bottom surface of the motor housing is below a bottom surface of the second clamp.

5. The clamping method according to claim 1, wherein in the step 1), the optical member and the motor housing are clamped simultaneously using the first clamp and the second clamp.

6. Clamping method according to claim 1, characterized in that said step 1) comprises:

a) clamping the motor housing by using the second clamp; and

b) the optical component is then clamped using the first clamp.

7. A method of assembling an optical lens, comprising:

8. The assembly method according to claim 7, wherein in the step 20), a clamping device is used to clamp the second lens component and the motor housing, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the second lens component, and the second clamp clamps the motor housing; then, in the pre-positioning process, the relative positions of the first clamp and the second clamp are fixed, so that the relative positions of the second lens component and the motor shell are kept unchanged.

9. The assembly method according to claim 8, wherein in the step 30), the relative positions of the first jig and the second jig are fixed during the active calibration, so that the relative positions of the second lens component and the motor housing are kept unchanged.

10. The assembly method according to claim 9, wherein in the step 40), the relative positions of the first jig and the second jig are fixed during the bonding process, so that the relative positions of the second lens component and the motor housing are kept unchanged.

11. The method of assembling of any of claims 8-10, wherein none of the motors are energized.

12. The method of assembling of claim 7, wherein in step 20), the first lens component further comprises a first barrel, and the at least one first lens is mounted within the first barrel.

13. The assembly method according to claim 8, wherein in the step 20), when the first jig clamps the second lens component, the bottom surface of the first jig is higher than the top surface of the motor, and the height of the bottom surface of the first jig higher than the top surface of the motor is less than or equal to 1.0 mm.

14. An assembling method of a camera module is characterized by comprising the following steps:

15. The assembling method according to claim 14, wherein in the step 200), the optical component and the motor housing are clamped by using a clamping device, wherein the clamping device comprises a first clamp and a second clamp, the first clamp clamps the optical component, and the second clamp clamps the motor housing; then, in the pre-positioning process, the relative positions of the first jig and the second jig are fixed, so that the relative positions of the optical component and the motor housing are kept unchanged.

16. The assembly method according to claim 15, wherein in step 30) the relative positions of the first and second clamps are fixed during the active calibration so that the relative positions of the optical component and the motor housing remain unchanged.

17. The method of assembling of claim 16, wherein in step 40), the relative positions of the first and second fixtures are fixed during the bonding process to maintain the relative positions of the optical component and the motor housing.

18. The method of assembling of any of claims 15-17, wherein none of the motors are energized.

19. The assembling method according to claim 15, wherein in the step 200), when the first jig clamps the optical component, the bottom surface of the first jig is higher than the top surface of the motor, and the height of the height is less than or equal to 1.0 mm.