CN209858823U - Optical lens and camera module - Google Patents

Abstract

The application provides an optical lens, includes: a plurality of sub lens units coupled to each other and each including a lens barrel and a lens; a snap mechanism by which the lens barrel and the lens of at least one of the plurality of sub-lens parts are engaged; and a connecting medium adapted to secure the plurality of sub-lens components together. The split-type lens processing method and the split-type lens processing device can reduce the bad loss of the processing procedure, improve the yield of the split-type lens, and improve the imaging quality of the optical lens or the camera module.

Description

Optical lens and camera module

Technical Field

The present application relates to the field of optical lenses, and in particular, to an optical lens, a camera module and a method for manufacturing the same.

Background

With the development and progress of the technology level, the mobile electronic device is becoming popular, and the related technology of the imageable optical device used for the mobile electronic device to help the user to obtain images (such as video or images) is rapidly developed and advanced, and is widely applied in many fields such as medical treatment, security, industrial production, etc.

In order to meet the continuously improved requirements of consumers on photographing, the camera module with automatic focusing is widely applied to digital products, such as terminal equipment of smart phones, tablet computers, monitoring and the like, and presents a rapid development trend.

At present, the trend of digital products towards miniaturization and high performance is developing, and accordingly, higher and higher requirements are put on the volume and performance of the optical lens.

The optical lens with large aperture and high pixel has complicated optical design and high sensitivity. With the increasing specifications of the lenses, from 20M, 40M, 48M to 64M or even higher, the lenses with higher pixels need to be designed in a smaller space, and the optical sensitivity of the lenses is very high. Therefore, the eccentricity and tilt (tilt) generated during the manufacturing process of the optical lens are required to be severe. In the conventional optical lens assembling process, the phenomenon of inclination or decentration of any optical lens can greatly affect the overall optical performance of the optical lens. In addition, as the number of lenses in an optical lens is increasing, for example, 5 lenses are increasing toward 6 lenses, 7 lenses or even more lenses, so that the assembling difficulty of the optical lens is increasing while the higher and higher volume and performance requirements are met, and the yield of the finished optical lens is decreasing in the production process of the optical lens.

The split type optical lens solves the above problems at least partially. In the split type optical lens, one complete optical lens is divided into a plurality of sub optical lenses, and the sub optical lenses include a lens barrel and at least one optical lens assembled in the lens barrel. The at least one optical lens is typically coupled in the barrel by laying a ring of glue material at a location where the non-optical area contacts the barrel.

The conventional assembly method of the split type optical lens is explained as follows. In the assembling method, firstly, the positions between each sub-optical lens and a photosensitive component of the split type optical lens are adjusted in an Active Alignment (AA) mode until the imaging requirement is met; and then, fixedly connecting each sub lens at the relative position determined by the active calibration through a glue material.

Compared with the common optical lens, the split-type optical lens adopts more glue to fix the whole optical system in order to ensure that the structure of the whole split-type optical lens is more stable. Although the assembly difficulty is reduced and the production yield of products is improved, the materials of the rubber material and the lens barrel and the lens are inconsistent in the aspects of temperature characteristics, mechanical characteristics and the like. In the later assembling process or the reliability test process, the glue material in the sub-optical lens or the glue material connecting and fixing each optical sub-lens expands or contracts when the environmental temperature of the optical lens changes due to baking or other reasons, so that the non-directional deformation is caused, and the structure of the optical lens is greatly changed. Specifically, the expansion or contraction of the material in the sub-optical lens causes the optical lens in the sub-optical lens to shift or tilt, and the optical performance of the optical lens is seriously degraded.

In addition, as described above, because there are many factors affecting the resolution of the lens, the factors exist in a plurality of elements, and the control of each factor has a limit to the manufacturing precision.

In recent years, module factories compensate for the inclination of a photosensitive chip through an active calibration process when assembling an imaging lens and a photosensitive module. However, this process has limited compensation capability. Because various aberrations affecting the resolving power are derived from the capability of the optical system, when the resolving power of the optical imaging lens is insufficient, the existing active calibration process of the photosensitive module is difficult to compensate.

SUMMERY OF THE UTILITY MODEL

An aspect of the present application provides an optical lens, which may include: a plurality of sub lens members engageable with each other and each including a lens barrel and a lens; the lens barrel and the lens of at least one of the plurality of sub-lens parts may be engaged by a snap-fit mechanism; and a connecting medium adapted to secure the plurality of sub-lens components together.

In one embodiment of the present application, the snap mechanism may include a recess formed at an inner side of the lens barrel, and the lens may be fixed in the recess in a snap manner.

In one embodiment of the present application, the snap mechanism may include first and second recesses formed at an inner side portion of the lens barrel and a protrusion formed on an edge of the lens, the protrusion of the lens may enter the second recess through the first recess and may be fixed in the second recess of the lens barrel in a snap manner by rotating the lens.

In one embodiment of the present application, the snap mechanism may include a recess formed on an inner side of the lens barrel and a protrusion formed on an edge of the lens, and the protrusion of the lens may be fixed in the recess of the lens barrel in a snap manner.

In one embodiment of the present application, the snap mechanism may include a raised portion and a light blocking portion formed on an inner side portion of the barrel, the barrel may be open at an upper end to receive the lens and the light blocking portion, an edge of the lens may mate with the inner side portion and the raised portion of the barrel, and the light blocking portion may be located above the lens and may engage with the inner side portion of the barrel.

In one embodiment of the present application, a lower surface of the snap mechanism may be flush with a lower surface of the lens barrel of at least one of the plurality of sub-lens units.

In one embodiment of the present application, the snap mechanisms may be evenly distributed along the circumference of the lens barrel and lens.

In one embodiment of the present application, the snap mechanism may be disposed circumferentially along the lens barrel and the lens.

In an embodiment of the present application, the connecting medium of the optical lens includes a glue material, the glue material may be located between the plurality of sub-lens components to bond the plurality of sub-lens components together, and the glue material may also be located between the snap mechanism and the lens.

In one embodiment of the present application, the glue material may be a photo-cured, thermal-cured, moisture-cured, anaerobic-cured, or oxidation-cured glue material.

In an embodiment of the present application, the sub-lens component having the snap structure is close to the object side.

According to another aspect of the present application, a camera module is also provided, which may include the optical lens described above.

According to still another aspect of the present application, there is also provided a method of manufacturing an optical lens. The manufacturing method may include: engaging a lens barrel and a lens of at least one of a plurality of sub lens sections of the optical lens by a snap mechanism, wherein the plurality of sub lens sections each include a lens barrel and a lens;

aligning the plurality of sub-lens components with one another; and

the plurality of sub-lens components are secured together using a connecting medium.

In an embodiment of the present application, engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism may include: the lens is fixed in a recessed portion formed in an inner side portion of the lens barrel of the buckle mechanism in a buckle manner.

In an embodiment of the present application, engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism may include: making a convex part formed on the edge of the lens enter a second concave part formed on the inner side part of the lens barrel through a first concave part formed on the inner side part of the lens barrel of the buckling mechanism; and fixing the convex part in the second concave part of the lens barrel in a buckling manner by rotating the lens.

In an embodiment of the present application, engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism may include: the convex part of the buckle mechanism formed on the edge of the lens is fixed in a concave part of the buckle mechanism formed on the inner side part of the lens barrel in a buckling manner.

In an embodiment of the present application, engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism may include: receiving the lens and the light blocking portion through the open upper end portion of the lens barrel, the light blocking portion and a boss portion formed at an inner side portion of the lens barrel forming a snap mechanism; fitting the edge of the lens with the inner side portion and the convex portion of the lens barrel; and the shading part is positioned above the lens and is jointed with the inner side part of the lens barrel.

In one embodiment of the present application, the step of aligning the plurality of sub-lens components with each other comprises: determining a relative position between the plurality of sub-lens components by active calibration.

In one embodiment of the present application, the manufacturing method may further include: the buckling mechanisms are uniformly distributed along the circumferential directions of the lens barrel and the lens.

In one embodiment of the present application, the manufacturing method may further include: and a buckling mechanism is arranged along the circumferential direction of the lens barrel and the lens.

In one embodiment of the present application, the manufacturing method may further include: a connecting medium, which may be a glue material, is applied between the snap mechanism and the lens.

In one embodiment of the present application, the glue material may be a photo-cured, thermal-cured, moisture-cured, anaerobic-cured, or oxidation-cured glue material.

Compared with the prior art, one or more embodiments of the application have at least one of the following technical effects:

1. the step of applying the glue material can be reduced, the reject ratio in the manufacturing process is reduced, and the manufacturing yield of the split type lens is improved;

2. the optical lens component has good structural strength, good stability and good assembly consistency, and has no deviation of glue material drawing or different performances caused by difference of glue materials by rigid buckling combination of the optical lens and the lens cone;

3. through not using or only using a small amount of gluey material reinforcement, reduced the area of contact of gluing material and lens, effectively reduced the variation that brings by gluing material inflation or shrink in the production process, for example glue material inflation or shrink drive lens skew or slope, cause optical lens performance badly.

4. The transverse size of the sub-lens barrel is reduced;

5. the bonding area among all the sub-lenses is increased; and

6. the performance and reliability of the optical lens are improved.

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 schematic cross-sectional view of a conventional split type optical lens in the related art;

FIG. 2 shows a schematic cross-sectional view of an optical lens according to an embodiment of the present application, with its sub-lens components in an assembled state;

fig. 3 shows a schematic cross-sectional view of a sub-lens part of an optical lens according to an embodiment of the present application, wherein a lens barrel and a lens of the sub-lens part are in an unassembled state, and the lens barrel is provided with a convex portion and a concave portion as a snap mechanism along an inner circumference thereof;

fig. 4 shows a schematic perspective view of a sub-lens part of an optical lens according to an embodiment of the present application, wherein a lens barrel and a lens of the sub-lens part are in an unassembled state, and the lens barrel is uniformly provided with a convex portion and a concave portion as a snap mechanism along an inner circumference thereof;

fig. 5 shows a schematic cross-sectional view of a sub-lens section of the optical lens according to the embodiment shown in fig. 3, wherein the lens barrel and the lens of the sub-lens section are in an assembled state;

fig. 6 shows a schematic perspective view of a sub-lens part of an optical lens according to an embodiment of the present application, wherein a lens barrel and a lens of the sub-lens part are in an unassembled state, and the lens barrel is provided with an annular convex portion and an annular concave portion as a snap mechanism along an inner circumferential direction thereof;

fig. 7 illustrates a schematic cross-sectional view of an optical lens according to an embodiment of the present application, in which a glue material is applied as a connecting medium between two sub-lens components of the optical lens;

fig. 8a shows a schematic cross-sectional view of a lens barrel and a lens of a prior art sub-lens component after conventional connection, wherein the lens barrel and the lens are connected by a glue material as a connection medium, and the area of a connection surface of the lens barrel for connecting with lens barrels of other sub-lens components is small;

fig. 8b shows a schematic cross-sectional view of a snap-in connection of a barrel and a lens of a sub-lens part of an optical lens according to an embodiment of the present application, wherein the barrel and the lens are connected by a snap-in mechanism and the connecting surface area of the barrel for connecting with barrels of other sub-lens parts is larger;

fig. 9 shows a schematic perspective view of a sub-lens part of an optical lens according to an embodiment of the present application, wherein the lens barrel and the lens of the sub-lens part are in an unassembled state, and the lens barrel is uniformly provided with the concave portions of the snap mechanisms along the inner circumference thereof and the lens has the convex portions of the snap mechanisms along the inner circumference thereof;

fig. 10 shows a schematic cross-sectional view of a snap-in connection of a barrel and a lens of a sub-lens part of an optical lens according to an embodiment of the present application, wherein the barrel and the lens are connected by a snap-in mechanism comprising protrusions evenly circumferentially arranged on an inner side of the barrel and recesses evenly circumferentially arranged on an outer side of the lens, the barrel and the lens of the sub-lens part being in an unassembled state;

fig. 11 shows a schematic cross-sectional view of a snap-in connection of a lens barrel and a lens of a sub-lens part of the optical lens shown in fig. 10, wherein the lens barrel and the lens are connected by a snap-in mechanism comprising a convex portion circumferentially uniformly arranged at an inner side of the lens barrel and a concave portion circumferentially uniformly arranged at an outer side of the lens, the lens barrel and the lens of the sub-lens part being in an assembled state;

fig. 12 shows a schematic cross-sectional view of a snap-in connection of a lens barrel and a lens of a sub-lens part of an optical lens according to an embodiment of the present application, wherein the lens barrel and the lens are connected by a snap-in mechanism comprising circumferentially uniformly arranged depressions at an inner side of the lens barrel and circumferentially uniformly arranged protrusions at an outer side of the lens, the lens barrel and the lens of the sub-lens part being in an assembled state;

FIG. 13 illustrates a schematic exploded perspective view of a sub-lens assembly of an optical lens according to one embodiment of the present application, wherein the snap mechanism includes a boss and a shutter formed on an inner side of a barrel that is open at an upper end to receive a lens and the shutter, an edge of the lens mates with the inner side and the boss of the barrel, and the shutter is positioned above the lens and engages the inner side of the barrel;

fig. 14 shows a schematic cross-sectional view of a sub-lens part of the optical lens shown in fig. 13, wherein the lens barrel and the lens of the sub-lens part are in an assembled state;

FIG. 15 shows a schematic cross-sectional view of a sub-lens section of an optical lens according to one embodiment of the present application, wherein the snap mechanism comprises a protrusion formed at an inner side of a barrel that is open at an upper end to receive a lens and a shutter formed by a connecting medium such as opaque glue, an edge of the lens mates with the inner side and the protrusion of the barrel, and the shutter is located above the lens, engaging the inner side of the barrel;

FIG. 16 shows a schematic cross-sectional view of a camera module according to one embodiment of the present application; and

fig. 17 shows a flowchart of a method of manufacturing an optical lens according to an embodiment of the present application.

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 application and does not limit the scope of the 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 in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Accordingly, the first lens component discussed below may also be referred to as a second lens component without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of each component may have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, 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, the use of "may" when describing embodiments of the present application means "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 "approximately", "about" and the like are used as table-approximating terms and not as table-degree terms, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one 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. In addition, unless explicitly defined or contradicted by context, the specific steps included in the methods described herein are not necessarily limited to the order described, but can be performed in any order or in parallel. For example, the active calibration steps described herein may be performed interchangeably with the adhesive placement steps without affecting the practice of the present embodiments. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 shows a schematic cross-sectional view of a conventional split type optical lens 1000 in the related art. As shown in fig. 1, the split lens includes a first sub-lens unit 1100 and a second sub-lens unit 1200. The first and second sub-lens parts 1100 and 1200 respectively include a lens barrel (1110, 1210) and at least one lens (1120, 1220).

In a conventional assembly process in the art, the relative position between the first and second sub-lens parts 1100 and 1200 is determined by active calibration, and then the first and second sub-lens parts 1100 and 1200 are connected by a connecting medium 1300 such as glue, thereby fixing the positions of the first and second sub-lens parts 1100 and 1200 determined during active calibration.

In this context, active calibration means: respectively placing the first sub-lens unit 1100 and the second sub-lens unit 1200 on the photosensitive path of the photosensitive chip, and enabling the lens formed by the first sub-lens unit 1100 and the second sub-lens unit 1200 to normally form an image; electrifying the photosensitive assembly to open the image, and acquiring the image formed by the split type optical lens 1000; adjusting the relative position of the first sub-lens part 1100 with respect to the second sub-lens part 1200 in at least one direction, which is at least one of a horizontal direction (xy), a vertical direction (z), a tilt direction (vw), and a circumferential direction (u), or at least one of xyz (horizontal and vertical directions), uvw (six directions around z, x, y, respectively), according to the quality of the imaged image (usually determined in terms of TV line, MTF, SFR, etc.); the relative position is fixed by laying a glue material between the first sub-lens unit 1100 and the second sub-lens unit 1200 and curing the glue material. The step of laying the glue material may be performed before the active calibration step, i.e. before the relative position is adjusted, or may be performed after the relative position is determined.

Therefore, for the split type optical lens 1000, a gap necessarily exists between the first sub-lens part 1100 and the second sub-lens part 1200. A plastic material is arranged on the lens portion to fixedly connect the first sub-lens unit 1100 and the second sub-lens unit 1200; the first sub-lens unit 1100 and the second sub-lens unit 1200 fix the lenses (1120, 1220) and the lens barrels (1110, 1210) by the adhesive material.

The split optical lens 1000 has poor reliability mainly due to the adhesive material bonded between the sub-lens parts and the adhesive material used for fixing the assembled lens in the sub-lens parts.

Fig. 2 shows a schematic cross-sectional view of an optical lens 2000 according to an embodiment of the present application. In this embodiment, the two sub-lens components (2100, 2300) of the optical lens 2000 are in an assembled state, as shown in fig. 2. The two sub-lens members (2100, 2300) are joined to each other and each include a lens barrel and a lens.

Fig. 3 shows a schematic cross-sectional view of a sub-lens part 2100 of an optical lens according to an embodiment of the present application. The sub-lens assembly 2100 is shown in fig. 2 as an example only.

The optical lens 2000 may further include a connection medium. The connecting medium is adapted to secure the plurality of sub-lens components together. The optical lens 2000 further includes a snap mechanism. The barrel 2110 and the lens 2120 of at least one of the plurality of sub-lens members 2100 are engaged by a snap mechanism 2200.

In this embodiment, the lens barrel 2110 and the lens 2120 of the sub-lens assembly 2100 are assembled together by the snap mechanism 2200, thereby forming a firm structure to reduce the contact area between the glue and the lens 2120 in the sub-lens assembly 2100. In this case, the glue may be eliminated entirely or a small amount of glue may be applied to reinforce the structure of the lens component 2100. The glue material can be photo-cured, thermal cured, moisture cured, anaerobic cured or oxidation cured glue material.

As shown in fig. 3, the lens barrel 2110 and the lens 2120 of the sub-lens member 2100 are in an unassembled state, and the lens barrel 2110 is provided with a projection 2210 and a recess 2220 as a snap mechanism 2200 in its inner circumferential direction.

Fig. 4 shows a schematic perspective view of a sub-lens component 3100 of an optical lens according to an embodiment of the application.

In this embodiment, the plurality of sub-lens members 3100 includes a barrel 3110 and a lens 3120.

The optical lens further includes a connecting medium. The connecting medium is adapted to secure the plurality of sub-lens components together. The optical lens further includes a snap mechanism 3200. The barrel and lens of at least one of the plurality of sub-lens components are joined by a snap mechanism 3200.

In this embodiment, the lens barrel 3110 and the lens 3120 of the sub-lens member 3100 are assembled together by the snap mechanism 3200, so as to form a firm structure, thereby reducing the contact area between the plastic material and the lens 3120 in the sub-lens member 3100. In this case, the glue may be eliminated entirely or a small amount of glue may be applied to reinforce the structure of the sub-lens component 3100.

As shown in fig. 4, the lens barrel 3110 and the lens 3120 of the sub-lens member 3100 are in an unassembled state, and the lens barrel 3110 is uniformly provided with a convex portion 3210 and a concave portion 3220 as a snap mechanism 3200 along an inner circumferential direction thereof. In other words, the snap mechanism 3200 may comprise a plurality of protrusions 3210 and recesses 3220. In the example shown in fig. 4, the snap mechanism 3200 includes 4 protrusions 3210 and a corresponding 4 recesses 3220. The convex portions 3210 and the concave portions 3220 are uniformly arranged along the inner circumferential direction of the lens barrel 3110 in order to make the force applied to the lens 3120 by the lens barrel 3110 uniform.

Fig. 5 shows a schematic cross-sectional view of a sub-lens part 2100 of an optical lens according to the embodiment shown in fig. 3. In fig. 5, the barrel 2110 and the lens 2120 of the sub-lens unit 2100 are in an assembled state.

As shown in fig. 5, the circumferential edge of lens 2120 engages within recess 2220 of catch mechanism 2200, thereby securely engaging lens 2120 and barrel 2110.

Fig. 6 shows a schematic perspective view of a sub-lens part 4100 of an optical lens according to an embodiment of the present application.

In fig. 6, the barrel 4110 and the lens 4120 of the sub-lens part 4100 are in an unassembled state. In this embodiment, the lens barrel 4110 is provided with an annular boss 4210 and an annular recess 4220 as the click mechanism 4200 along its inner circumference. The annular boss 4210 and the annular recess 4220 are provided along the entire circumferential inner side of the lens barrel 4110, in other words, the snap mechanism 4200 includes only one annular boss 4210 and one annular recess 4220. Thus, the force of the lens 4120 received by the barrel 4110 can be uniform.

Fig. 7 shows a schematic cross-sectional view of an optical lens 5000 according to an embodiment of the present application.

In this embodiment, the optical lens 5000 includes two sub-lens components — a first sub-lens component 5100 and a second sub-lens component 5200. The first sub-lens member 5100 and the second sub-lens member 5200 are joined to each other, and each include a lens barrel and a lens.

The optical lens 5000 further includes a connection medium 5300. Connecting medium 5300 is adapted to secure first sub-lens component 5100 and second sub-lens component 5200 together. The optical lens 5000 further includes a snap mechanism 5400. The lens barrel 5110 and the lens 5120 of the first sub-lens component 5100 are joined together by the snap mechanism 5400, so as to form a firm structure, thereby reducing the contact area between the rubber material and the lens 5120 in the first sub-lens component 5100. In this case, the glue in the first sub-lens unit 5100 may be completely eliminated, or a small amount of glue may be applied to reinforce the structure of the first sub-lens unit 5100.

As shown in fig. 7, a small amount of glue is applied between the lens barrel 5110 and the lens 5120 of the first sub-lens unit 5100 to further fix the position of the lens 5120 in the lens barrel 5110.

In various implementations, a glue material may be applied between the lens and the lens barrel of the sub-lens component to assist in fixing the lens and the lens barrel.

Fig. 8a shows a schematic cross-sectional view of a lens barrel 1110 and a lens 1120 of a first sub-lens part 1100 of the optical lens shown in fig. 1 after conventional connection.

When assembling the split optical lens, the adhesive material is usually disposed on the lens barrel of the sub-lens component located below. The lower sub-lens part typically has a large glue application area, but the area available for bonding of the upper sub-lens part is relatively small.

As shown in fig. 8a, the lens barrel 1110 and the lens 1120 are connected by a glue 1130 as a connection medium, and the area of a lower connection surface 1111 of the lens barrel 1110 for connecting with lens barrels of other sub-lens components is small.

Fig. 8b shows a schematic cross-sectional view of a sub-lens part 2100 of an optical lens according to the embodiment shown in fig. 3. In fig. 8b, the barrel 2110 and lens 2120 of the sub-lens assembly 2100 are in an assembled state.

As shown in fig. 8b, the circumferential edge of lens 2120 engages within recess 2220 of catch mechanism 2200, thereby securely engaging lens 2120 and barrel 2110. In addition, the area of the connection surface 2111 of the lens barrel 2110 for connection with lens barrels of other sub-lens components is larger than that of the first sub-lens component 1100 shown in fig. 8 a.

Therefore, under the condition that the lateral dimension (xy direction) of the first sub-lens component is fixed, the sub-lens component 2100 has a relatively large bonding area, so that the bonding force between the sub-lens components is larger, the reliability of the split type lens is better, and the arrangement mode of the glue can be more diversified due to the large bonding area. Also, in the case where the bonding area is constant, the lateral dimension of the first sub-lens unit may be set smaller, thereby further reducing the volume of the entire optical lens.

Fig. 9 shows a schematic perspective view of a sub-lens part 6100 of an optical lens according to an embodiment of the present application. In fig. 9, the lens barrel 6110 and the lens 6120 of the sub-lens unit 6100 are in an unassembled state. The lens barrel 6110 is uniformly provided with the concave portions 6210 of the snap mechanisms 6200 in the inner circumferential direction thereof, and the lens 6120 has the convex portions 6220 of the snap mechanisms 6200 in the outer circumferential direction thereof. The recess 6210 includes a first recess portion 6211 and a second recess portion 6212.

When the sub-lens unit 6100 is assembled, the convex portion 6220 of the lens 6120 enters the second concave portion 6212 through the first concave portion 6211 and is fixed in the second concave portion 6212 of the lens barrel 6110 in a snap-fit manner by rotating the lens 6120.

Alternatively, a glue material may be applied at the junction of the convex portion 6220 and the concave portion 6210 to reinforce the effect. It is contemplated that the snap mechanism 6200 may also be provided to include a raised portion uniformly provided along the inner circumferential direction of the lens barrel 6110 and a recessed portion uniformly provided along the outer circumferential direction of the lens 6120.

Fig. 10 shows a schematic cross-sectional view of a snap-in connection of a lens barrel 7110 and a lens 7120 of a sub-lens component 7100 of an optical lens (not shown) according to an embodiment of the present application. The lens barrel 7110 and the lens 7120 of the sub-lens assembly 7100 are in an unassembled state.

As shown in fig. 10, the lens barrel 7110 and the lens 7120 are connected by a snap mechanism 7200. The snap structure 7200 includes protrusions 7220 evenly circumferentially disposed on the inner side of the lens barrel 7110 and depressions 7210 evenly circumferentially disposed on the outer side of the lens 7120.

Fig. 11 shows a schematic cross-sectional view of a snap-in connection of a lens barrel 7110 and a lens 7120 of a sub-lens component 7100 of the optical lens shown in fig. 10. In fig. 11, the lens barrel 7110 and the lens 7120 of the sub-lens member 7100 are in an assembled state.

Fig. 12 shows a schematic cross-sectional view of a snap-in connection of a lens barrel 8110 and a lens 8120 of a sub-lens component 8100 of an optical lens (not shown) according to an embodiment of the present application.

This embodiment is similar to the embodiment shown in fig. 10 and 11, except that the snap structure 8200 comprises circumferentially uniformly disposed depressions 8220 located on the inner side of the lens barrel 8110 and circumferentially uniformly disposed protrusions 8210 located on the outer side of the lens 8120.

Fig. 13 illustrates a schematic exploded perspective view of a sub-lens component 9100 of an optical lens (not shown) according to one embodiment of the present application.

As shown in fig. 13, the snap mechanism 9200 includes a convex portion 9210 and a light shielding portion 9220 formed at an inner side portion of the lens barrel 9110. The lens barrel 9110 is open at an upper end portion to receive the lens 9120 and the light shielding portions 9220.

Fig. 14 shows a schematic sectional view of a sub-lens member 9100 of the optical lens shown in fig. 13, in which a lens barrel 9110 and a lens 9120 of the sub-lens member 9100 are in an assembled state.

As shown in fig. 14, the edge of the lens 9120 mates with the inner side portion of the lens barrel 9110 and the convex portion 9210. The light shielding portion 9220 is located above the lens 9120, and engages with an inner side portion of the lens barrel 9110. A sealant is applied between the light shielding portion 9220 and the inner side portion of the lens barrel 9110 to fix the light shielding member.

The light shielding portion 9220 may be made of any suitable material, such as plastic, metal, black film.

The light shielding portion 9220 may be a plastic material, and preferably, a non-light-transmissive plastic material. For example, as shown in fig. 15, a convex portion 9210 and a light shielding portion 9220 formed of a connection medium such as a light-impermeable adhesive material are formed on the inner side portion of the lens barrel 9110.

Fig. 16 shows a schematic cross-sectional view of a camera module 100 according to an embodiment of the present application.

As shown in fig. 16, in this example, the camera module 100 includes two sub-lens components, a first sub-lens component and a second sub-lens component 120. Wherein the first sub-lens component is similar to sub-lens component 2100 shown in figure 3, the same reference numerals as in figure 3 are used in the following description for clarity purposes. Although the sub-lens assembly 2100 illustrated in fig. 3 is employed in this embodiment, it should be understood that the camera module 100 may include any of the above-described embodiments of sub-lens assemblies having snap-fit structures.

The first sub-lens section 2100 and the second sub-lens section 120 are joined to each other, and each includes a lens barrel and a lens.

The camera module 100 also includes other components that are common in camera modules and for clarity, these components, which are well known in the art, are not described in detail.

The optical lens 100 includes a connection medium 130. The connecting medium 130 secures the first sub-lens member 2100 and the second sub-lens member 120 together.

In the above-described embodiments, the sub-lens part having the snap structure is closer to the object side than the sub-lens part without the snap structure. In addition, the sub lens component with the buckling structure can be closer to the image side.

Fig. 17 shows a flowchart of a method of manufacturing an optical lens according to an embodiment of the present application.

As shown in fig. 17, the method for manufacturing the optical lens includes the steps of:

step S100: engaging a lens barrel and a lens of at least one of a plurality of sub lens sections of an optical lens, which are separated from each other and each include the lens barrel and the lens, by a snap mechanism;

step S200: aligning the plurality of sub-lens components with one another;

step S300: the plurality of sub-lens components are secured together using a connecting medium.

In one embodiment of the present application, the step of engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism comprises:

and fixing the lens in a concave part of the buckling mechanism formed at the inner side part of the lens barrel in a buckling manner.

In one embodiment of the present application, the step of engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism comprises: making a convex part formed on the edge of the lens enter a second concave part formed on the inner side part of the lens barrel through a first concave part formed on the inner side part of the lens barrel of the buckling mechanism; and fixing the convex part in a second concave part of the lens barrel in a buckling manner by rotating the lens.

In one embodiment of the present application, the step of engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism comprises: fixing a convex portion of the clip mechanism formed on an edge of the lens in a snap manner in a concave portion of the clip mechanism formed on an inner side portion of the lens barrel.

In one embodiment of the present application, the step of engaging the lens barrel and the lens of at least one of the plurality of sub-lens parts of the optical lens by a snap mechanism comprises: receiving the lens and a light blocking portion through an open upper end portion of the lens barrel, the light blocking portion and a boss formed at an inner side portion of the lens barrel forming the snap mechanism; mating an edge of the lens with an inner side portion of the barrel and the boss; and positioning the light shielding portion above the lens and engaging an inner portion of the lens barrel.

In one embodiment of the present application, the step of aligning the plurality of sub-lens components with each other comprises: determining a relative position between the plurality of sub-lens components by active calibration. Specifically, the positions between each sub-optical lens component and the photosensitive assembly of the split-type optical lens are adjusted in an active calibration mode until the imaging requirements are met.

In one embodiment of the present application, the method of manufacturing an optical lens further includes the steps of: the buckling mechanisms are evenly distributed along the circumferential directions of the lens barrel and the lens.

In one embodiment of the present application, the method of manufacturing an optical lens further includes the steps of: the buckling mechanism is arranged along the circumferential direction of the lens barrel and the lens.

In one embodiment of the present application, the method of manufacturing an optical lens further includes the steps of: applying a glue material between the snap mechanism and the lens.

The above description is only a preferred embodiment of the 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 protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the technical idea described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (11)

1. An optical lens, comprising:

a plurality of sub lens units coupled to each other and each including a lens barrel and a lens;

a snap mechanism by which the lens barrel and the lens of at least one of the plurality of sub-lens components are engaged; and

a connecting medium adapted to secure the plurality of sub-lens components together.

2. An optical lens barrel according to claim 1, wherein the snap mechanism includes a recess formed in an inner side portion of the lens barrel, the lens being fixed in the recess in a snap manner.

3. An optical lens barrel according to claim 1, wherein the locking mechanism includes a first recess and a second recess formed in an inner side portion of the lens barrel and a projection formed on an edge of the lens, the projection of the lens enters the second recess through the first recess and is fixed in the second recess of the lens barrel in a locking manner by rotating the lens.

4. An optical lens barrel according to claim 1, wherein the snap mechanism includes a recess formed in an inner side portion of the lens barrel and a protrusion formed on an edge of the lens, the protrusion of the lens being fixed in the recess of the lens barrel in a snap manner.

5. An optical lens barrel according to claim 1, wherein the snap mechanism includes a convex portion and a light blocking portion formed on an inner side portion of the lens barrel, the lens barrel being open at an upper end portion to receive the lens and the light blocking portion, an edge of the lens being fitted with the inner side portion and the convex portion of the lens barrel, and the light blocking portion being located above the lens and engaging with the inner side portion of the lens barrel.

6. An optical lens according to any of claims 1 to 5, characterized in that the snap mechanisms are evenly distributed along the circumference of the barrel and the lens.

7. An optical lens barrel according to any one of claims 1 to 5, wherein the snap mechanism is provided circumferentially along the lens barrel and the lens.

8. An optical lens according to any of claims 1-5, characterized in that the connecting medium comprises a glue material between the sub-lens parts to bond them together, the glue material also being located between the snap mechanism and the lens.

9. An optical lens according to claim 8, wherein the glue material is a photo-cured, thermo-cured, moisture-cured, anaerobic-cured or oxidation-cured glue material.

10. An optical lens element according to any one of claims 1-5, wherein the sub-lens elements with snap structures are close to the object side.

11. A camera module comprising the optical lens of any one of claims 1-10.