CN112166358B

CN112166358B - Optical lens, camera module and assembling method thereof

Info

Publication number: CN112166358B
Application number: CN201980036052.5A
Authority: CN
Inventors: 陈烈烽; 田中武彦; 梅其敏; 蒋恒
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2018-05-30
Filing date: 2019-04-26
Publication date: 2022-07-26
Anticipated expiration: 2039-04-26
Also published as: CN112166358A

Abstract

An optical lens comprises a first lens component (100). The first lens part (100) comprises one or more first lenses (101), a first barrel (102) and an adhesive glue (103). The inner side of the first lens barrel (102) is provided with a composite containing hole (600), at least one first lens (101) is embedded into the composite containing hole (600), and the composite containing hole (600) comprises an annular containing area side wall (6011). The outer side of the embedded first lens (101) comprises a first area (10131) and a second area (10132), and the first area (10131) and the second area (10132) are mutually staggered. The first area (10131) is an area of the outer side surface of the first lens (101) which is leaned against the accommodating area side wall (6011), and the second area (10132) is an area of the outer side surface of the first lens (101) which is exposed outside the accommodating area side wall (6011). The adhesive glue (103) adheres the first barrel (102) to the first lens (101) by contacting the second area (10132). The optical lens, the corresponding camera module and the assembling method of the optical lens and the camera module can reduce the lens position deviation caused by lens barrel deformation and improve the imaging quality of the optical lens or the camera module.

Description

Optical lens, camera module and assembling method thereof

Cross-referencing

The present application claims priority of the invention patent application No. 201810584364.7 entitled "optical lens, camera module and assembly method thereof" filed in 2018 in the year 06/08 from the chinese patent office, priority of the utility model patent application No. 201820882490.6 entitled "optical lens, camera module" filed in 2018 in the year 06/08 from the chinese patent office, priority of the invention patent application No. 201810541239.8 entitled "optical lens, camera module and assembly method thereof" filed in 2018 in the year 05/30 from the chinese patent office, priority of the utility model patent application No. 201820822167.X entitled "optical lens, camera module" filed in 2018 in the year 05/30 from the chinese patent office, the entire contents of the above patent applications are incorporated herein by reference.

Technical Field

The application relates to the technical field of optical imaging, in particular to an optical lens, a camera module and an assembling method thereof.

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, it is difficult to realize the requirements of high pixel, small size and large aperture in the same camera module. 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), the quality of the optical imaging lens and the manufacturing errors during the module packaging process often need to be considered. Specifically, in the manufacturing process of the optical imaging lens, factors affecting the lens resolution come from errors in the respective elements and their assembly, errors in the thickness of the lens spacer elements, errors in the assembly and fitting of the respective lenses, variations in the refractive index of the lens material, and the like. The errors of each element and the assembly thereof comprise the optical surface thickness of each lens monomer, the optical surface rise of the lens, the surface type of the optical surface, the curvature radius, the single surface and the surface eccentricity of the lens, the inclination of the optical surface of the lens and the like, and the magnitude of the errors depends on the precision of the mold and the control capability of the forming precision. The error in the thickness of the lens spacing element depends on the machining accuracy of the element. The error of the fitting fit of each lens depends on the dimensional tolerance of the fitted components and the fitting accuracy of the lens. The error introduced by the change in refractive index of the lens material depends on the stability of the material and batch consistency. The errors of the elements influencing the resolution force have the phenomenon of accumulated deterioration, and the accumulated errors are increased along with the increase of the number of the lenses. The existing resolution solution is to perform tolerance control on the sizes of the elements with high relative sensitivity and compensate for lens rotation to improve the resolution, but because a lens with high pixels and large aperture is sensitive, the tolerance is required to be strict, such as: partial 1um lens eccentricity of the sensitive lens can bring about 9' image plane inclination, so that the processing and assembling difficulty of the lens is increased, and meanwhile, the process capability index (CPK) of lens assembly is low and large in fluctuation due to the long feedback period in the assembling process, so that the reject ratio is high. 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 accuracy, and if the accuracy of each element is simply improved, the improvement capability is limited, the improvement cost is high, and the increasingly improved imaging quality requirements of the market cannot be met.

The applicant provides an assembling method for adjusting and determining the relative positions of an upper sub-lens and a lower sub-lens based on an active calibration process, and then bonding the upper sub-lens and the lower sub-lens together according to the determined relative positions so as to manufacture a complete optical lens or a camera module. The solution can improve the process capability index (CPK) of the optical lens or the camera module which is produced in large scale; the requirements on the precision and the assembly precision of each element of a material (such as a sub-lens or a photosensitive assembly for assembling an optical lens or a camera module) can be relaxed, so that the overall cost of the optical imaging lens and the camera module is reduced; can adjust the various aberrations of the module of making a video recording in real time at the equipment in-process, reduce the defective rate, reduction in production cost promotes the formation of image quality.

However, active calibration of the optical system of the lens is a new production process, and the actual mass production needs to consider many factors such as reliability, falling resistance, weather resistance and manufacturing cost of the optical lens and the camera module, and sometimes needs to face various non-measurable factors to cause yield reduction. For example, in one process scheme, a glue material is filled between the first lens component and the second lens component to maintain the first lens component and the second lens component in relative positions determined by active calibration. However, in actual trial production, the imaging quality of the optical lens and the camera module is often degraded compared with that obtained in the active calibration stage, and the degradation sometimes exceeds the tolerance range, resulting in poor product. The applicant has found that, after an active calibration process is introduced to the assembly of an optical lens or a camera module, variations of a plastic material, a lens barrel or a lens and other unknown factors may be the causes of the above problems. There is a need for a solution that overcomes the above problems to improve product yield.

Disclosure of Invention

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

According to an aspect of the present application, there is provided an optical lens including:

a first lens component, comprising:

one or more first lenses;

the first lens barrel is provided with a compound accommodating hole on the inner side, and at least one first lens is embedded into the compound accommodating hole, wherein the compound accommodating hole comprises an annular accommodating area side wall, the outer side surface of the embedded first lens comprises a first area and a second area, and the first area and the second area are staggered with each other, wherein the first area is an area of the outer side surface of the first lens, which is supported against the accommodating area side wall, and the second area is an area of the outer side surface of the first lens, which is exposed out of the accommodating area side wall; and

an adhesive glue adhering the first barrel and the first lens by contacting the second area.

The side wall of the accommodating area is provided with a boss extending along the axial direction of the first lens barrel.

Wherein, still include:

a second lens part including a second barrel and at least one second lens mounted within the second barrel, the at least one second lens and the one or more first lenses together constituting an imageable optical system; and

a first glue material located in a first gap between the first lens component and the second lens component, the first glue material adapted to support and secure the first lens component and the second lens component after curing.

Wherein the first lens has a first optical zone for imaging and a first structural zone surrounding the optical zone; and is

The composite containment bore further comprises:

the center of the top surface of the accommodating area is provided with a light through hole, and the first structure area of the embedded first lens leans against the top surface of the accommodating area;

the top surface of the glue painting area; and

the side wall of the glue area is positioned at the periphery of the side wall of the accommodating area, the adhesive glue is positioned in an area among the side wall of the glue area, the top surface of the glue area, the boss and the outer side surface of the first lens, and the adhesive glue is in contact with the outer side surface of the first lens through the second area.

And in the direction along the axis of the first lens cone, the top surface of the glue painting area is lower than the top surface of the accommodating area.

The lug boss is provided with an outer side face, and a gap is formed between the outer side face of the lug boss and the side wall of the painting glue area.

The lug bosses are provided with a plurality of lug bosses distributed on the side wall of the accommodating area.

Wherein a maximum thickness of the first region in a direction along an axis of the first barrel is 1/2-3/4 of a thickness of the structural region.

Wherein a maximum thickness of the second region in a direction along an axis of the first barrel is 1/4 to 1/2 of a thickness of the structural region.

Wherein the composite accommodating hole is integrally formed.

The first lens barrel is made of plastic, and the first lens is made of glass.

And the side wall of the painting glue area and/or the top surface of the painting glue area are rough surfaces.

Wherein the rough surface is formed by a saw-toothed structure.

Wherein the boss has a rough outer surface in contact with the adhesive glue.

Wherein the second region is subjected to a roughening treatment.

The side wall of the accommodating area is circular on a plane perpendicular to the optical axis of the optical lens, the outer side surface of the first lens is circular, the first lens is embedded into the composite accommodating hole, and the contact part of the side wall of the composite accommodating hole and the outer side surface of the first lens is in tight fit.

The light-transmitting hole is provided with a stray light reflecting surface, and the stray light reflecting surface forms a certain angle with the optical axis of the optical lens.

Wherein, the bonding glue forms a ring shape with a gap.

Wherein a transition between the first region and the second region is arcuate in shape.

The accommodating area side wall comprises an accommodating area side wall main body and a boss inner side surface, and the distance from the boss inner side surface to the central axis of the first lens barrel is smaller than the distance from the accommodating area side wall main body to the central axis of the first lens barrel.

The bosses are arranged around the axis of the first lens barrel at equal intervals, and the angle of the central angle occupied by each boss is 20-40 degrees.

According to another aspect of the present application, there is provided a camera module, including: an optical lens as claimed in any preceding claim.

According to yet another aspect of the present application, there is provided an optical lens assembly method, the optical lens including a first lens part and a second lens part, wherein the first lens part includes a first barrel and at least one first lens mounted within the first barrel, and the second lens part includes a second barrel and at least one second lens mounted within the second barrel, the optical lens assembly method including:

pre-positioning the first lens part and the second lens part which are separated from each other, so that the at least one first lens and the at least one second lens jointly form an imaging optical system;

performing active calibration according to the actually measured imaging result of the optical system, and determining the relative position of the first lens part and the second lens part; and

bonding the first lens part and the second lens part to support and fix the relative positions of the first lens part and the second lens part;

the inner side of the first lens barrel is provided with a composite accommodating hole, at least one first lens is embedded into the composite accommodating hole, the composite accommodating hole comprises an annular accommodating area side wall, the outer side surface of the embedded first lens comprises a first area bearing against the accommodating area side wall and a second area exposed outside the accommodating area side wall, the first area and the second area are staggered with each other, and adhesive glue bonds the first lens barrel and the first lens by contacting the second area.

According to still another aspect of the present application, there is provided a camera module assembly method, including: assembling the optical lens by the optical lens assembling method; and manufacturing a camera module based on the assembled optical lens.

According to still another aspect of the present application, there is provided an optical lens including:

a first lens component, comprising:

one or more first lenses;

the first lens barrel is provided with a compound accommodating hole on the inner side, and at least one first lens is embedded into the compound accommodating hole, wherein the compound accommodating hole comprises an annular accommodating area side wall, and the height of the accommodating area side wall is 1/2-3/4 of the height of the outer side surface of the embedded first lens.

The outer side surface of the embedded first lens comprises a first area and a second area, wherein the first area is an area of the outer side surface of the first lens, which bears against the side wall of the accommodating area, the second area is an area of the outer side surface of the first lens, which is exposed out of the side wall of the accommodating area, and the first lens part further comprises adhesive glue, which is located between the first lens barrel and the first lens and bonds the first lens barrel and the first lens by contacting the second area.

Wherein the optical lens further includes:

the second lens component comprises a second lens barrel and at least one second lens arranged in the second lens barrel, and the at least one second lens and the one or more first lenses form an imaging optical system together; and

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

1. this application can be through setting up the boss in compound holding hole, increase the embedding degree of depth of first lens, increase the contact surface of first lens and first lens cone tight fit to the steadiness of first lens with the equipment of first lens cone has been improved.

2. The embedded assembly can be reinforced through the adhesive, and the relative position of the first lens barrel and the first lens can be prevented from deviating due to the change of various environmental factors (for example, caused by the fact that the thermal expansion rates of the lens and the lens barrel are inconsistent when the lens and the lens barrel are baked).

3. This application can both improve the stability of lens embedding (for example can avoid lens embedding depth to be too shallow and the not hard up that leads to) guarantee again to glue the area of contact of material and first lens side through adopting the design that holds face of leaning on (first region 10131) and cover face of gluing (second region 10132) crisscross each other to increase the steadiness that first lens cone and first lens bonded.

4. This application can both guarantee the tight fit of first lens and first lens cone in processes such as initiative calibration through adopting the design that the face of leaning on (first region 10131) and the face of covering with glue (second region 10132) crisscross each other, can subdue (or prevent) and lead to the deformation or the offset of first lens because of environmental condition changes (for example receive the stoving) after initiative calibration again to promote the imaging quality based on the split type optical lens of initiative calibration process preparation, also help improving the preparation yield of this kind of optical lens.

5. This application can increase the area of contact of first lens and first lens cone close fit through the embedding degree of depth that increases the holding face (first region 10131) to the gomphosis intensity between first lens and the first lens cone has been improved.

a first lens part including a first barrel and at least one first lens mounted within the first barrel;

the second lens component comprises a second lens barrel and at least one second lens arranged in the second lens barrel, and the at least one second lens and the first lens jointly form an imaging optical system; and

a first rubber located in a first gap between a first lens component and a second lens component, the first rubber being adapted to support and secure the first lens component and the second lens component after curing, wherein an included angle between an axis of the first lens component and an axis of the second lens component is different from zero;

wherein the inner side of the first lens barrel has a first containing hole, at least one of the at least one first lens is embedded in the first containing hole, the first containing hole has a first containing hole side surface, the embedded first lens has a first outer side surface, and

the first outer side includes:

the contact part is in direct contact with the side surface of the first accommodating hole and forms close fit with the first accommodating hole; and

a non-contact portion which is not in direct contact with a side surface of the first accommodation hole and is bonded to the first barrel by an adhesive paste.

The side surface of the first accommodating hole is polygonal, the side surface of the first lens is circular, and the embedded first lens and the first accommodating hole form tight fit at the contact part.

The first lens is provided with a first optical area for imaging and a first structural area surrounding the first optical area, the outer side of the first structural area is in a circular shape, the top surface of the first structural area bears against the top surface of the first accommodating hole, and the diameter of an inscribed circle of a polygon on the side surface of the first accommodating hole is smaller than that of a circle on the outer side surface of the first structural area, so that a tight fit is formed between the side surface of the first accommodating hole and a contact part of the outer side surface of the first structural area.

The adhesive glue is arranged in the area among the side face of the first containing hole, the top face of the first containing hole and the outer side face of the first structure area.

Wherein the polygon is a regular polygon.

Wherein, first holding hole includes first holding layer and is located first drawing glue film of first holding layer below, first holding layer has first holding hole side with first holding hole top surface, the height of first holding hole side is less than the thickness of first constitutional area, first drawing glue film has first drawing glue film top surface and first drawing glue film side, first drawing glue film side arrives the distance of optical axis is greater than first holding hole side arrives the distance of optical axis, the lateral surface of first constitutional area first drawing glue film top surface with clearance between the first drawing glue film side forms first drawing glue area, bonding glue arrange in first drawing glue area with first lens cone is fixed together.

And a first bonding glue containing area is formed among the side surface of the first containing hole, the top surface of the first containing hole and the outer side surface of the first structure area, and the first bonding glue containing area is communicated with the first painting glue area to contain the bonding glue.

Wherein a first distance of the first accommodation hole is at least 0.015mm greater than a radius of the first lens embedded therein, wherein the first distance is a distance from a vertex of the polygon of the first accommodation hole to a center of the first accommodation hole.

Wherein a second distance of the first receiving hole is smaller than a radius of the first lens inserted into the first receiving hole to form a tight fit at the contact portion, and a difference between the radius of the first lens and the second distance, which is a distance from an edge of the polygon of the first receiving hole to a center of the first receiving hole, is not more than 0.005 mm.

Wherein the adhesive of the first painting area forms a ring shape having a gap.

Wherein the first lens is formed by an injection molding process and an outer side surface of the first lens has a lens cut surface;

the first lens barrel is formed through an injection molding process, and the outer side surface of the first lens barrel is provided with a lens barrel cut surface; and

the lens barrel cut surface is disposed on a side opposite to the lens barrel cut surface.

The inner side of the second lens barrel is provided with a second containing hole, the second lens is embedded into the second containing hole, the second lens is provided with a second optical area for imaging and a second structure area surrounding the second optical area, the side surface of the second containing hole is in close fit with the outer side surface of the second structure area, and the second lens is fixed with the second lens barrel through the adhesive glue.

Wherein the first rubber is adapted to support and fix the first lens component and the second lens component so that the relative position of the first lens component and the second lens component is maintained at the relative position determined by the active calibration.

performing active calibration according to the actually measured imaging result of the optical system, and determining the relative positions of the first lens component and the second lens component; and

wherein, the inner side of the first lens cone is provided with a first containing hole, the first containing hole is provided with a first containing hole side surface and a first containing hole top surface, the middle area of the first containing hole top surface is provided with a light through hole, and the side surface of the first accommodating hole is polygonal on a plane perpendicular to the optical axis of the optical lens, the first lens has a first optical area for imaging and a first structural area surrounding the first optical area and the outer side of the first structural area is circular, the first lens is embedded into the first containing hole and forms close fit with the contact part of the outer side surface of the first structure area on the side surface of the first containing hole, the top surface of the first structure area is supported against the top surface of the first containing hole, and adhesive glue is also arranged between the outer side surface of the first structure area and the inner side surface of the first lens barrel so as to fix the first lens and the first lens barrel together.

Wherein, first holding hole includes first holding layer and is located the first drawing glue film of first holding layer below, first holding layer has first holding hole side with first holding hole top surface, the height of first holding hole side is less than the thickness of first constitutional area, first drawing glue film has first drawing glue film top surface and first drawing glue film side, first drawing glue film side arrives the distance of optical axis is greater than first holding hole side arrives the distance of optical axis, the lateral surface of first constitutional area first drawing glue film top surface with clearance between the first drawing glue film side forms first drawing glue area still include before the predetermined step:

inverting the first barrel;

inserting the first lens into the first accommodating hole, so that the top surface of the first structure area of the first lens is supported against the top surface of the first accommodating hole, and the first optical area of the first lens is positioned at the light-passing hole;

and drawing the bonding glue in the first glue drawing area, and curing the bonding glue to realize the bonding of the first lens and the first lens barrel, wherein the bonding glue forms a ring shape with a gap.

Wherein, before the pre-positioning step, the method further comprises:

inverting the second barrel, wherein the inner side of the second barrel is provided with a plurality of stages of stepped second accommodating holes; and

and sequentially embedding a plurality of second lenses into the multistage second accommodating holes.

The side surfaces of the multistage second accommodating holes are circular; and the number of the first and second groups,

in the step of sequentially embedding the plurality of second lenses into the multistage second accommodating holes, each second lens forms a tight fit with the corresponding first-stage second accommodating hole.

The second accommodating holes of at least one stage of the multiple stages of the second accommodating holes are polygonal accommodating holes, each polygonal accommodating hole is provided with a second accommodating hole side surface and a second accommodating hole top surface, the second accommodating hole side surfaces are polygonal on a plane perpendicular to the optical axis of the optical lens, the second lens is provided with a second optical area for imaging and a second structural area surrounding the second optical area, and the outer side surfaces of the second structural areas are circular; and

the step of inserting the plurality of second lenses into the multistage second accommodation holes in sequence further comprises: inserting at least one second lens into the corresponding polygonal receiving hole; the second lens is embedded into the polygonal containing hole, the contact part of the side face of the second containing hole and the outer side face of the second structure area is in close fit, the top face of the second structure area is supported against the top face of the second containing hole, glue bonding glue is drawn between the outer side face of the second structure area and the inner side face of the second lens barrel, and then the bonding glue is solidified to fix the second lens and the second lens barrel together.

Wherein, before the pre-positioning step, the method further comprises:

forming a first lens with a gate part on the side surface through an injection molding process, wherein the gate part is a part corresponding to an injection port for injecting a liquid molding material in the injection molding process;

cutting off a gate portion of the first lens, thereby forming a lens cut surface on a side surface of the first lens;

forming a first barrel having the gate portion on a side surface thereof by an injection molding process; and

cutting out the gate portion of the first barrel, thereby forming a barrel cut surface at a side surface of the first barrel;

and in the step of fitting the first lens into the first accommodation hole, the lens cut surface is disposed on a side opposite to the barrel cut surface.

Wherein, before the pre-positioning step, the molding method of the first barrel or the second barrel includes:

injecting hot-melt plastic into a forming cavity of a mold to obtain a formed lens cone, wherein the mold comprises a movable side mold plate, a fixed side mold plate, a plurality of tooth plate groups and a mold core assembly, the movable side mold plate and the fixed side mold plate are detachably connected through the tooth plate groups, the mold core assembly comprises the forming cavity formed by a movable mold core and a fixed mold core, and the forming cavity corresponds to the first lens cone or the second lens cone in shape; and

and cutting off a gate part of the formed lens barrel to obtain the first lens barrel or the second lens barrel.

According to still another aspect of the present application, there is provided a camera module assembling method, including assembling an optical lens by the optical lens assembling method described in any one of the above; and manufacturing a camera module based on the assembled optical lens.

1. this application can be provided with excessive gluey space on first lens cone, excessive gluey space holds glue from the top surface of lens, and glue is carried out lens cone and lens and is partly started fixing by the top of lens to fix the relative position of first lens cone and first lens better.

2. The first lens barrel is provided with a first lens, the first lens is in a circular shape, and the size of the polygon is smaller than that of the first lens, so that the first lens is tightly matched with the first lens barrel, and the strength between the first lens and the first lens barrel is enhanced.

3. The first lens barrel is provided with the polygon, the first lens is in the shape of a circle, the polygon is larger than the circle in size, therefore, the first lens can be assembled into the first lens barrel more easily, the polygon is in interference relation with the circle, and the contact parts are arranged around the axis of the first lens barrel at equal intervals, so that pre-positioning can be achieved during assembly.

4. The excessive glue space (glue containing space) arranged in the application increases the bonding area of the first lens cone and the glue material, and also increases the bonding area of the first lens and the glue material, so that the bonding strength of the first lens and the first lens cone is increased.

5. The cut-out part of the first lens is arranged corresponding to the cut-out part of the first lens barrel, so that deformation caused by size difference is reduced.

6. The contact part of the first lens lateral surface (with the contact part of the first lens) evenly distributed on this lateral surface to evenly increase the intensity between first lens cone and the first lens, reduce the lens offset that lens cone deformation caused.

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 an optical lens of an embodiment of the present application;

fig. 2A shows a schematic cross-sectional view of a first lens component of an optical lens of an embodiment of the present application;

FIG. 2B shows a side view of a first optic of an optical lens of an embodiment of the present application;

FIG. 2C further illustrates an expanded view of the outer side of the first lens of the optical lens of an embodiment of the present application;

fig. 3 illustrates a perspective view of a first barrel of an optical lens according to an embodiment of the present application;

FIG. 4A illustrates a bottom view of a first lens component of an optical lens of one embodiment of the present application;

FIG. 4B is a cross-sectional view of the boss taken through section line A-A in FIG. 4A;

FIG. 5 is a bottom view of the first lens component of the optical lens of FIG. 4A with adhesive depicted therein according to one embodiment of the present application;

FIG. 6A illustrates a bottom view of a first lens component of an optical lens of one embodiment of the present application;

FIG. 6B is a cross-sectional view of the boss taken through section line A-A in FIG. 6A;

fig. 7 is a schematic cross-sectional view illustrating a first barrel of an optical lens according to an embodiment of the present application;

FIG. 8 illustrates a bottom view of a first lens component of an optical lens of an embodiment of the present application;

FIG. 9A illustrates a relative position adjustment in active calibration in one embodiment of the present application;

FIG. 9B illustrates rotational adjustment in active calibration of another embodiment of the present application;

fig. 9C shows a relative position adjustment with added v, w direction adjustments in an active calibration of yet another embodiment of the present application.

FIG. 10 shows a schematic cross-sectional view of an optical lens of an embodiment of the present application;

fig. 11 is a schematic cross-sectional view illustrating a first barrel of an optical lens according to an embodiment of the present application;

FIG. 12 illustrates a cross-sectional schematic view of a first lens component of an optical lens of one embodiment of the present application;

fig. 13A shows a schematic cross-sectional view of a first barrel of an optical lens according to another embodiment of the present application;

FIG. 13B illustrates a cross-sectional view of one embodiment of the present application taken along section line A-A shown in FIG. 4A;

FIG. 14A illustrates a cross-sectional view of a first lens component of an optical lens of an embodiment of the present application;

FIG. 14B illustrates a cross-sectional view of one embodiment of the present application taken along section line B-B shown in FIG. 5A;

FIG. 15 is a cross-sectional view of one embodiment of the present application with size markings added based on the first lens component shown in FIG. 5B;

FIG. 16 depicts a cross-sectional view of a first lens component of an optical lens of yet another embodiment of the present application after painting;

FIG. 17 shows a schematic top view of a first barrel cast according to an embodiment of the present application;

FIG. 18A shows a cross-sectional view of a first lens casting of an embodiment of the present application;

FIG. 18B shows a top view of a first lens of an embodiment of the present application after cast molding;

FIG. 19 illustrates a cross-sectional schematic view of a second lens component of an optical lens of one embodiment of the present application;

FIG. 20 illustrates a cross-sectional schematic view of a first lens component of an optical lens of one embodiment of the present application;

FIG. 21A illustrates a top view of a first barrel of a first lens component of the optical lens of FIG. 11 in one embodiment of the present application;

FIG. 21B illustrates a top view of the first lens component of the optical lens of FIG. 11 in one embodiment of the present application;

FIG. 21C illustrates a top view of the first lens component of the optical lens of FIG. 11 after painting in accordance with one embodiment of the present application;

FIG. 22 illustrates a bottom view of a first lens component of an optical lens of an embodiment of the present application;

FIG. 23A illustrates a relative position adjustment in active calibration in one embodiment of the present application;

FIG. 23B illustrates rotational adjustment in active calibration of another embodiment of the present application;

fig. 23C illustrates a relative position adjustment with added v, w direction adjustment in active calibration of yet another 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 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 in the present specification, expressions such as first, second, etc. are used only for distinguishing 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" 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 the list of listed features, that the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, the use of "may" mean "one or more embodiments of the application" when describing embodiments of the application. Also, the term "exemplary" is intended to refer to examples or illustrations.

As used herein, the terms "substantially," "about," and the like are used as words of table approximation, not as words of table degree, 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. 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 an optical lens according to an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, the optical lens includes a first lens part 100, a second lens part 200, and a first rubber 300. The first lens part 100 comprises a first barrel 102 and a first lens 101 mounted in the first barrel 102, and the first barrel 102 and the first lens 101 are optionally connected by using an adhesive 103. The second lens part 200 comprises a second lens barrel 202 and five second lenses 201 installed in the second lens barrel 202, and the five second lenses 201 and the first lens 101 together form an imageable optical system. The first barrel 102 may be made of a different material than the second barrel 202. Note that the materials of the first barrel 102 and the second barrel 202 may be the same. The first rubber 300 is located in the first gap 400 between the first lens part 100 and the second lens part 200, and the first rubber 300 is adapted to support and fix the first lens 101 and the second lens part 200 after curing. In this embodiment, the first lens barrel 102 and the second lens barrel 202 are optionally connected by a first glue 300 to achieve the connection of the first lens part 100 and the second lens part 200. In this embodiment, the first rubber 300 is disposed between the first lens barrel 102 and the second lens barrel 202, optionally in other embodiments the first rubber 300 may be disposed between the first lens 101 and the second lens barrel 202 and/or between the first lens 101, the first lens barrel 102, and the second lens barrel 202, optionally in other embodiments the first rubber 300 may be disposed between the first lens barrel 102 and the second lens 201 and/or between the first lens 101, the first lens barrel 102, and the second lens 201. The first glue 300 may be adapted to support and fix the first lens 101 and the second lens part 200, so that the relative position of the first lens 101 and the second lens part 200 is maintained at the relative position determined by the active calibration. In the embodiment shown in fig. 1, the number of the first lens 101 is one, but it is obvious to those skilled in the art that the number of the first lens 101 may be two or more; similarly, the number of the second lenses 201 is 5 in fig. 1, but it is obvious to those skilled in the art that other numbers can be selected for the number of the second lenses 201, and 5 are merely exemplary.

Fig. 2A shows a schematic cross-sectional view of a first lens part 100 of an optical lens according to an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, the inner side of the first barrel 102 has a composite accommodating hole 600, the composite accommodating hole 600 has an accommodating section side wall 6011 and an accommodating section top surface 6012, and a middle area of the accommodating section top surface 6012 has a light passing hole 700. The first lens 101 can be embedded into the composite containing hole 600, the first lens 101 has a first optical area 1011 for imaging and a first structural area 1012 surrounding the first optical area 1011, the side wall 6011 of the containing area forms a close fit with the outer side surface of the first structural area 1012, the first lens 101 is fixed with the first lens barrel 102 by the adhesive 103, and the first structural area 1012 of the first lens 101 embedded in the composite containing hole 600 bears against the top surface 6012 of the containing area. Tight fitting means herein that the distance from the receiving area side wall 6011 to the axis 1001 of the first lens component 100 is smaller than the distance from the outer side surface 1013 of the first structure area 1012 to the axis 1001 of the first lens component 100. Therefore, when the first lens 101 is inserted into the composite accommodating hole 600, the accommodating area side wall 6011 is deformed by the extrusion of the first lens, and the deformation forms a reaction force on the first lens, so that the accommodating area side wall 6011 and the outer side surface of the first structure area are supported against each other and tightly fit with each other.

Fig. 2B shows a side view of the first optic 101 of the optical lens of one embodiment of the present application. In this embodiment, the outer side surface of the first lens includes a first region 10131 abutting against the receiving area side wall 6011 and a second region 10132 exposed outside the receiving area side wall 6011, and the first region 10131 and the second region 10132 are staggered with each other. Interleaving in this context means embedding each other. Fig. 2C further illustrates an expanded schematic view of the outer side surface of the first lens 101 of the optical lens of an embodiment of the present application. Referring to fig. 2B and 2C, a boundary 10133 between the first region 10131 and the second region 10132 has a wavy shape and protrusions and recesses of the boundary 10133 alternately appear such that a portion of the first region 10131 is embedded in the second region 10132 and a portion of the second region 10132 is embedded in the first region 10131, thereby forming a state in which the first region 10131 and the second region 10132 are staggered with each other. Fig. 3 illustrates a perspective view of the first barrel 102 of the optical lens according to an embodiment of the present application. The side wall 6011 of the accommodating area has a boss 2000 extending along the axial direction of the first barrel, so that the first region 10131 and the second region 10132 in fig. 2B are mutually staggered, and the number of the bosses shown in the figure is 4, but those skilled in the art may know that the number of the bosses may also be other numbers, for example, two, three or more than four. In the above embodiment, the boss is disposed in the composite accommodating hole, so that the embedding depth of the first lens is increased, and the contact surface of the first lens and the first lens barrel in tight fit is increased, thereby improving the stability of the first lens and the first lens barrel in assembly. In addition, the embedded assembly is reinforced by the adhesive, so that the relative position deviation of the first lens barrel and the first lens caused by the change of various environmental factors (for example, caused by the inconsistent thermal expansion rates of the lens and the lens barrel when being baked) can be reduced. The design that the bearing surface (the first area 10131) and the glue coating surface (the second area 10132) are staggered mutually is adopted, so that the stability of lens embedding (for example, looseness caused by too shallow lens embedding depth can be avoided), and the contact area between a glue material and the side surface of the first lens can be ensured, so that the bonding stability of the first lens barrel and the first lens is improved.

Further, for the split lens, the split lens is assembled by two (or more) lens components as shown in fig. 1, and an optical system formed by the first lens component and the second lens component (i.e. an optical surface of the first lens and an optical surface of the second lens constitute an imageable optical system) can be actively calibrated, and then the first lens component and the second lens component are bonded according to the relative position determined by the active calibration, so as to obtain a high-quality imaging effect. However, in actual trial production, the imaging quality of the optical lens and the camera module is often degraded compared with that obtained in the active calibration stage, and the degradation sometimes exceeds the tolerance range, resulting in poor product. The applicant has found that subsequent processes of active alignment (e.g. baking) may result in deformation and positional deviation of the first lens, which in turn may result in variation of the optical system state of the finished product relative to the optical system state determined by active alignment. The design that the bearing surface (the first area 10131) and the glue-coated surface (the second area 10132) are staggered mutually is adopted, so that the tight fit between the first lens and the first lens barrel can be ensured in the processes of active calibration and the like, and the deformation or the position deviation of the first lens caused by the change of environmental conditions (such as baking) after the active calibration can be reduced (or prevented), so that the imaging quality of the split optical lens manufactured based on the active calibration process is improved, and the manufacturing yield of the optical lens is also improved.

Referring to fig. 2A, in this embodiment, the composite containment hole 600 further comprises a glue area top surface 6022 and glue area side walls 6021, the glue area side walls 6021 being located at the periphery of the containment area side walls 6011, wherein the adhesive 103 is located in the area between the glue area side walls 6021, the glue area top surface 6021, the top surface of the boss 2000, and the outer side surface 1013 of the first lens, and the adhesive 103 is in contact with the outer side surface 1013 of the first lens by the second area 10132.

In this embodiment, the boss 2000 formed on the receiving space side wall 6011 along the axial direction of the first barrel increases the contact height between the outer surface 1013 of the first lens and the glue space side wall 6021, and increases the contact area between the outer surface 1013 of the first lens and the glue space side wall 6021, so that the first lens can be firmly fixed. In addition, the adhesive glue 103 contacts with the outer side surface 1013 of the first lens through the second area 10132, so that the contact area between the adhesive glue 103 and the outer side surface 1013 of the first lens is also increased, the connection strength between the first lens and the first lens barrel is improved, and meanwhile, the second area 10132 between the bosses 2000 forms an overflow glue accommodating area which can accommodate the overflow adhesive glue, so that the first optical area 1011 can be prevented from being polluted.

Further, in this embodiment, the inner diameter (i.e., the diameter of the inner side surface) of the side wall 6011 of the accommodation area is smaller than the first lens diameter, and the difference between the inner diameter of the side wall 6011 of the accommodation area and the first lens diameter is not greater than 10 μm.

Further, in another embodiment, the inner diameter (i.e. the diameter of the inner side surface) of the side wall 6011 of the accommodation area is smaller than the diameter of the first lens by 1-10 μm, such as 5 μm.

Referring to fig. 2A, further, in an embodiment, the glue area top surface 6022 is lower than the receiving area top surface 6012 in the direction along the axis of the first barrel.

Referring to fig. 3, further, in an embodiment, the boss 2000 has a plurality of bosses 2000 distributed on the receiving area side wall 6011, the boss 2000 has an outer side surface, and a gap is formed between the outer side surface of the boss and the glue area side wall 6021, which may provide communication between different glue overflow receiving areas, so that the flow of the adhesive glue 103 may be achieved.

Fig. 4A illustrates a bottom view of first lens component 100 of an optical lens of one embodiment of the present application. Wherein fig. 4B is a cross-sectional view of the boss 2000 taken through section line a-a in fig. 4A. Referring to fig. 4B, L is a lens structure area thickness, and the dotted line is a boundary line between the top surface of the first structure area 1012 and the side wall 6011 of the receiving area of the first lens 101, wherein the height of the projection 2000 is 0.25L, and the height of the side wall 6011 of the receiving area is 0.5L. Referring to fig. 2 as well, in the direction along the axis of the first barrel, the maximum thickness of the first region 10131 is 3/4 of the thickness of the first structural region 1012, and the maximum thickness of the second region 10132 is 1/2 of the thickness of the first structural region 1012.

Further, in one embodiment, the compound accommodating hole 600 is integrally formed, the first barrel 102 is made of plastic, and the first lens 101 is made of glass.

Further, in this embodiment, the glue region sidewall 6021 and/or the glue region top surface 6022 are roughened surfaces, the boss 2000 has a roughened outer surface in contact with the adhesive, and the second region 10132 is roughened, wherein the roughened surfaces are optionally roughened surfaces formed by saw-tooth structures.

Referring also to fig. 2A, further, in one embodiment, the clear aperture 700 has a slanted stray light reflecting surface 701. Specifically, the stray light reflecting surface 701 forms a certain angle with the optical axis of the optical lens, and the stray light reflecting surface 701 is inclined, so that stray light can be prevented from influencing imaging. Fig. 5 is a bottom view of the first lens part 100 of the optical lens of fig. 4A showing the adhesive 103, and referring to fig. 5, the adhesive 103 forms a ring shape having a gap, and in this embodiment, the number of the gap is only one, but those skilled in the art will recognize that the number of the gap may be more than two.

FIG. 6A illustrates a bottom view of a first lens component 100 of an optical lens of one embodiment of the present application. Wherein fig. 6B is a cross-sectional view of the boss 2000 taken through section line a-a in fig. 6A. Referring to fig. 6B, a transition between the first region 10131 and the second region 10132 is arc-shaped.

Fig. 7 shows a schematic cross-sectional view of the first barrel 102 of the optical lens according to an embodiment of the present application. Wherein the section plane is a section plane passing through a central axis of the first lens barrel. In this embodiment, the sidewall of the accommodating area includes a boss inner side surface and an accommodating area sidewall body, and a distance from the boss inner side surface to the central axis of the first lens barrel is smaller than a distance from the accommodating area sidewall body to the central axis of the first lens barrel. In this embodiment, after the first lens 101 is inserted into the first barrel 102, the outer side surface of the first lens is tightly fitted with the inner side surface of the boss and the sidewall body of the receiving area at the same time, because the distance from the inner side surface of the boss to the central axis of the first barrel is less than the distance from the sidewall body of the receiving area to the central axis of the first barrel, compared with an embodiment in which the distance from the inner side surface of the boss to the central axis of the first barrel is equal to the distance from the sidewall body of the receiving area to the central axis of the first barrel, in this embodiment, the outer side surface 1013 of the first lens 101 bears a greater force, and the first lens 101 can be inserted into the first barrel 102 more firmly.

Fig. 8 illustrates a bottom view of first lens component 100 of an optical lens of one embodiment of the present application. Referring to fig. 8, when there are 3 bosses, each boss occupies a circular arc angle of 30 degrees, and occupies a circular arc angle of 90 degrees in total. Further, in an embodiment, the number of the bosses 2000 is preferably more than 2, and the 2 or more bosses 2000 can form a stable snap ring or a support structure to ensure the overall structural strength, wherein each boss 2000 is integrally formed with the receiving area side wall 6011, an occupied center angle of each boss is preferably 20 ° to 40 °, and a distance between every two bosses 2000 in the clockwise direction of the receiving area side wall 6011 is preferably the same, so as to ensure that the strength of the bosses 2000 matching with the first lens 101 is implemented by the bosses arranged in an array, so as to ensure that the force borne by each boss 2000 can be approximately equal, thereby enhancing the structural stability. Wherein, when having 2 bosss, every boss accounts for 40 degrees's circular arc angle.

Further, in this one embodiment, the lateral area of the first lens is approximately 2 π rL, where r is the radius of the lens and L is the thickness of the first structure region of the lens. The side surface of the first lens is in contact with the side wall 6011 of the accommodating area with bosses, when the thickness of the bosses is 1/4L, the number of the bosses is 3, and the arc angle occupied by each boss 2000 is 30 degrees, the contact surface area of the bosses 2000 is about 0.125 pi rL, so that the bonding surface area of the first lens is about 0.875 pi rL.

It is assumed that the number of bosses is n, the angle occupied by each boss is b (unit is DEG), and the thickness of the boss is set to L ₁ The contact surface area of the boss 2000 is (L) ₁ π rnb)/180. Wherein the height of the specific sidewall of the second region is assumed to be L ₂ The area of the second region not contacted by the mesa is 2 π L ₂ r-((L ₁ π rnb)/180), wherein L ₁ And L ₂ The relationship of (c) is: 1/3L ₂ ＞L1＜3/4L ₂

Wherein the relation between the first lens bonding surface area S1 and the contact surface area S2 is: (L) ₁ πrnb)/180≥S1+S2≤2πrL ₂ 。

Further, in another embodiment of the present application, a camera module based on the optical lens is further provided. The camera module comprises an optical lens and a photosensitive assembly. Wherein the optical lens may be the optical lens in any of the foregoing embodiments.

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

step S10, a preparation step. A first lens part 100 and a second lens part 200 are prepared to be separated from each other, wherein the first lens part 100 includes a first barrel 102 and at least one first lens 101 mounted in the first barrel 102, and the second lens part 200 includes a second barrel 202 and at least one second lens 201 mounted in the second barrel 202.

Step S20, pre-positioning step. The first lens part 100 and the second lens part 200 are pre-positioned, so that the at least one first lens 101 and the at least one second lens 201 together form an imageable optical system.

Step S30, active calibration step. And performing active calibration according to the actually measured imaging result of the optical system, and determining the relative positions of the first lens component 100 and the second lens component 200.

Step S40, a bonding step. Bonding the first lens part 100 and the second lens part 200 to support and fix a relative position of the first lens part 100 and the second lens part 200, wherein an axis of the first lens part 100 and an axis of the second lens part 200 may have an included angle α different from zero.

Referring to fig. 2A, in the present embodiment, in the preparation step, the inner side of the first barrel has a composite receiving hole 600, at least one first lens 101 is inserted into the composite receiving hole 600, wherein the composite receiving hole 600 includes an annular receiving area side wall 6011, the outer side surface 1013 of the inserted first lens includes a first area 10131 bearing against the receiving area side wall 6011 and a second area 10132 exposed outside the receiving area side wall, and the first area 10131 and the second area 10132 are staggered with each other, and the adhesive 103 adheres the first barrel and the first lens by contacting the second area.

In one embodiment, the composite accommodating hole includes an accommodating area and a glue area located below the accommodating area, the accommodating area has an accommodating area side wall and an accommodating area top surface, the height of the accommodating area side wall is smaller than the thickness of the first structural area, the glue area has a glue area top surface and a glue area side wall, the distance from the glue area side wall to the optical axis is greater than the distance from the accommodating area side wall to the optical axis, a glue area is formed by a gap between the outer side surface of the first structural area, the glue area top surface and the glue area side wall, and step S10 may include substeps S101, S102 and S103. Steps S101, S102 and S103 are as follows:

step S101, inverting the first lens barrel 102 to make the composite accommodating hole 600 up and the light-passing hole 700 down;

step S102, embedding the first lens 101 into the composite containing hole 600, so that the top surface 6012 of the containing area contacts with the top surface of the first structure area 1012 of the first lens 101, and the first optical area 1011 of the first lens 101 is located at the light passing hole 700;

step S103, drawing the adhesive 103 on the glue drawing area to the glue drawing area, so as to bond the first lens 101 and the first lens barrel 102, wherein the adhesive 103 forms a ring shape with a gap.

In the embodiment, wherein the diameter of the first lens 102 is larger than the diameter of the composite receiving hole 600 by 1-10 μm in step 102, thereby forming a tight fit, the position of the annular gap is preferably set to a position facing the sidewall of the receiving area in step 103.

Further, in another embodiment of the present application, an assembling method of the image pickup module based on the optical lens is also provided. The camera module assembly side comprises an optical lens and a photosensitive assembly. The method for assembling the optical lens can be the method for assembling the optical lens in any of the foregoing embodiments.

Further, according to an embodiment of the present application, there is provided an optical lens including a first lens part, the first lens part includes one or more first lenses and a first lens barrel, wherein the first lens barrel has a composite accommodating hole inside, the at least one first lens is embedded in the composite accommodating hole, the composite accommodating hole includes an annular accommodating area side wall, the height of the accommodating area side wall is 1/2 to 3/4 of the height of the outer side surface of the embedded first lens, and the diameter of the inner side surface of the accommodating area side wall is 1 μm to 10 μm smaller than the diameter of the first lens. In this embodiment, the height of the sidewall of the accommodating area embedded in the outer side surface of the first lens is 1/2 to 3/4, and the diameter of the inner side surface of the sidewall of the accommodating area is 1 μm to 10 μm smaller than the diameter of the first lens, so that the outer side surface of the first lens is embedded 1/2 to 3/4 of the sidewall of the accommodating area in a tight fit manner. The tight fit engagement force and engagement depth above 1/2 securely engage the first lens in the compound receiving hole.

Further, in one embodiment, the outer side surface of the first lens is embedded to include a first area and a second area, wherein the first area is an area of the outer side surface of the first lens, which bears against the sidewall of the accommodating area, and the second area is an area of the outer side surface of the first lens, which is exposed outside the sidewall of the accommodating area, and the first lens component further includes an adhesive glue, which is located between the first lens barrel and the first lens and bonds the first lens barrel and the first lens by contacting the second area.

Further, in one embodiment, the optical lens further includes a second lens component and a first plastic material, wherein the second lens component includes a second lens barrel and at least one second lens installed in the second lens barrel, and the at least one second lens and the one or more first lenses together form an imageable optical system; the first rubber is positioned in a first gap between the first lens component and the second lens component, and the first rubber is suitable for supporting and fixing the first lens component and the second lens component after being solidified.

On the basis of the above embodiment, further, the number of the first mirror plates 101 may be smaller than the number of the second mirror plates 201, and the second mirror plates 201 are closer to the photosensitive chip than the first mirror plates 101. Further, in one embodiment, the number of the first lenses 101 is one, and the outer diameter of the first lenses 101 may be larger than the second lens 201 with the smallest outer diameter.

Further, in another embodiment of the present application, a camera module based on the optical lens is also provided. The camera module comprises an optical lens and a photosensitive assembly. Wherein the optical lens may be the optical lens in any of the foregoing embodiments. The embodiment can reduce the secondary variation of the optical system of the camera module after the active calibration is completed, thereby ensuring the imaging quality of the camera module and improving the yield in mass production. In some embodiments, the camera module may further include a motor (or other type of optical actuator), the optical lens may be mounted in a cylindrical carrier of the motor, and a base of the motor is mounted on a top surface of the photosensitive assembly. The photosensitive member may include, for example, a wiring board, a photosensitive chip mounted on a surface of the wiring board, a ring-shaped support formed on or mounted on the surface of the wiring board and surrounding the photosensitive chip, and a color filter. The ring support may form a step, and the color filter is mounted on the step of the ring support. The base of the motor is mounted on the top surface of the ring-shaped support body.

Note that, in the above embodiments, the boss 2000 is disposed in the composite accommodating hole 600, so that the outer side surface of the first lens 101 has the first area 10131 and the second area 10132 which are staggered with each other, but the present application is not limited thereto. In other embodiments of the present application, other designs may be adopted as long as the outer side surface of the first lens has a first region 10131 and a second region 10132 that are staggered with each other, so that the bearing surface (the first region 10131) and the adhesive coating surface (the second region 10132) of the outer side surface of the first lens are staggered with each other. The bearing surface (the first area 10131) and the adhesive-coated surface (the second area 10132) are mutually staggered, so that the stability of lens embedding (for example, looseness caused by too shallow lens embedding depth) can be improved, and the contact area between the adhesive material and the side surface of the first lens can be ensured, so that the bonding stability of the first lens barrel and the first lens is improved.

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. Fig. 9A illustrates a relative position adjustment in active calibration in an embodiment of the present application. In this adjustment mode, the first lens part 100 (or the first lens 101) can move in the x, y, and z directions relative to the second lens part 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 and y directions both lie in a tuning plane P in which the translation can be resolved into two components in the x and y directions.

FIG. 9B illustrates rotational adjustment in active calibration of another embodiment of the present application. 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. 9A. 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. 9C shows a relative position adjustment manner with v and w direction adjustments added in the active calibration of yet another embodiment of the present application. 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 part 100 with respect to the second lens part 200 (that is, the tilt of the optical axis of the first lens part 100 with respect to the optical axis of the second lens part 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 application, 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 provided between the bottom surface of the first lens component 100 and the top surface of the second lens component 200; and in the bonding step, the adhesive material is arranged in the gap.

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 can bear against or partially bear against the sides of the first lens component 100 to thereby clip the first lens component 100.

Fig. 10 shows a schematic cross-sectional view of an optical lens of an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, the optical lens includes a first lens part 100, a second lens part 200, and a first rubber 300. The first lens part 100 comprises a first lens barrel 102 and a first lens 101 installed in the first lens barrel 102, and the first lens barrel 102 and the first lens 101 are optionally connected by using an adhesive 103; a second lens part 200 including a second barrel 202 and five second lenses 201 installed in the second barrel 202, wherein the five second lenses 201 and the first lens 101 together form an imageable optical system, and the first barrel 102 is made of a material different from that of the second barrel 202; and a first rubber 300 located in a first gap 400 between the first lens part 100 and the second lens part 200, the first rubber 300 being adapted to support and fix the first lens 101 and the second lens part 200 after curing, wherein an included angle α between an axis 1001 of the first lens part 100 and an axis 2001 of the second lens part 200 is different from zero. In this embodiment, the first lens barrel 102 and the second lens barrel 202 are optionally connected by a first glue 300 to achieve the connection of the first lens part 100 and the second lens part 200. In this embodiment, the first rubber 300 is disposed between the first lens 101 and the second lens barrel 202, optionally in other embodiments the first rubber 300 may be disposed between the first lens barrel 102 and the second lens barrel 202 and/or between the first lens 101, the first lens barrel 102, and the second lens barrel 202, optionally in other embodiments the first rubber 300 may be disposed between the first lens barrel 102 and the second lens 201 and/or between the first lens 101, the first lens barrel 102, and the second lens 201. The first glue 300 may be adapted to support and fix the first lens 101 and the second lens part 200, so that the relative position of the first lens 101 and the second lens part 200 is maintained at the relative position determined by the active calibration. In the embodiment shown in fig. 10, the number of the first lens 101 is one, but it is obvious to those skilled in the art that the number of the first lens 101 may be two or more; similarly, the number of the second lens 201 is 5 in fig. 10, but it is obvious to those skilled in the art that other numbers may be selected for the number of the second lens 201, and the 5 are only examples here.

Fig. 11 shows a schematic cross-sectional view of the first barrel 102 of the optical lens according to the embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, the first barrel 102 has a first accommodating hole 600 on the inner side, the first accommodating hole 600 has a first accommodating hole side surface 6011 and a first accommodating hole top surface 6012, and the middle area of the first accommodating hole top surface 6012 has a light passing hole 700. Fig. 12 shows a schematic cross-sectional view of a first lens part 100 of an optical lens according to an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. Referring to fig. 12, the first lens 101 can be inserted into the first receiving hole 600, the first lens 101 has a first optical area 1011 for imaging and a first structural area 1012 surrounding the first optical area 1011, the first receiving hole side 6011 forms a tight fit with the outer side of the first structural area 1012, and the first lens 101 is fixed with the first lens barrel 102 by an adhesive 103. The first lens 101 has a first outer side surface 1013, and the first outer side surface 1013 includes a contact portion and a non-contact portion, wherein the contact portion is in direct contact with the first accommodation hole side surface 6011 and forms a tight fit; the non-contact portion is not in direct contact with the first accommodation hole side 6011, and is bonded to the first barrel 102 by an adhesive glue 103. The tight fit means herein that the distance from the side surface 6011 of the first receiving hole to the central axis 1001 of the first lens part 100 is smaller than the distance from the outer side surface of the first structure area 1012 to the central axis 1001 of the first lens part 100, so that the first lens 101 is suitable for being tightly fitted into the first receiving hole 600. Fig. 13A illustrates a schematic longitudinal cross section of the first barrel 102 of the optical lens according to an embodiment of the present application, where the longitudinal cross section is a cross section passing through an optical axis of the optical lens, and is not described in detail below. Fig. 13B shows a schematic cross-sectional view taken on the basis of the section line a-a shown in fig. 13A. Referring to fig. 13A and 13B, in the present embodiment, the first accommodation hole side 6011 has a polygonal shape on a plane perpendicular to the optical axis of the optical lens. Fig. 14A shows a schematic longitudinal sectional view of the first lens section 100 of the optical lens of the embodiment of the present application. Fig. 14B shows a schematic cross-sectional view taken on the basis of the section line B-B shown in fig. 14A. Referring to fig. 14A and 14B, on a plane perpendicular to the optical axis of the optical lens, the outer side surface 1013 of the first structure region 1012 is circular and has a diameter adapted to the shape and size of the polygon 6011 (for example, the diameter of the outer side surface of the first structure region 1012 may be slightly larger than the diameter of an inscribed circle of the polygon, which may also be referred to as an inscribed circle), which is a circle tangent to each side of the polygon, to form a tight fit at the contact portion of the first receiving hole side surface and the outer side surface of the first structure region. In this embodiment, the polygon may be a regular polygon, specifically a regular hexagon, and those skilled in the art may also select polygons with other numbers of sides.

Referring to fig. 12, further, in this embodiment, the first accommodating hole 600 includes a first accommodating layer 601 and a first painting adhesive layer 602 located below the first accommodating layer 601, the first containing layer 601 has the first containing hole side surface 6011 and the first containing hole top surface 6012, the height of the first containment hole side 6011 is less than the thickness of the first structural section 1012, the first make layer 602 has a first make layer top surface 6022 and first make layer side surfaces 6021, the distance from the first painting glue layer side surface 6021 to the optical axis is greater than the distance from the first containing hole side surface 6011 to the optical axis, the gap between the outer side surface 1013 of the first structure region 1012, the first make layer top surface 6022 and the first make layer side surface 6021 forms a first make layer region 800, the adhesive 103 is disposed in the first glue area 800 to fix the first lens 101 and the first barrel 102 together. Referring to fig. 14A, a first adhesive receiving area 900 is formed between the first receiving hole side surface 6011, the first receiving hole top surface 6012, and the outer side surface 1013 of the first structure area 1012, and the first adhesive receiving area 900 is communicated with the first adhesive area 800 to receive the overflowing adhesive 103.

Fig. 15 shows a cross-sectional schematic view with increased dimensional markings based on the first lens component 100 shown in fig. 14B. Referring to fig. 15, a first distance D of the first receiving hole 600, which is a distance from a vertex of the polygon of the first receiving hole 600 to a center of the first receiving hole 600, is greater than a radius r of the first lens 101 inserted into the first receiving hole 600. A second distance d of the first receiving hole 600, which is a distance from an edge of the polygon of the first receiving hole 600 to a center of the first receiving hole 600, is smaller than a radius r of the first lens 101 inserted into the first receiving hole 600. Fig. 16 is a schematic cross-sectional view of a first lens component 100 after being glued for an optical lens according to an embodiment of the application. The cross section of fig. 16 is taken based on the section line C-C in fig. 3. Referring to fig. 16, the adhesive 103 located in the first painting area 800 forms a ring shape having a gap, and the adhesive 103 in the embodiment shown in fig. 16 has one gap, but those skilled in the art will understand that the number of the gaps may be two or more. It should be noted that, in another embodiment, since the glass lens may not have the notch, the first barrel may not have a corresponding notch.

Further, still referring to FIG. 15, in one embodiment, the first distance D is greater than the radius r of the first lens and D-D is greater than or equal to 0.02mm, and the second distance D is less than the radius r of the first lens and r-D is less than or equal to 0.005 mm.

In this embodiment of the present application, the first lens 101 is tightly fitted with the first receiving hole 600, so that the first lens 101 can be tightly clamped on the first barrel 102, thereby facilitating installation; the first accommodating hole side 6011 of the first barrel 102 is designed in a polygonal shape, so that the first lens 101 is installed while the first adhesive receiving area 900 is provided, and an overflowing adhesive material can be received, so that the first optical area 1011 of the first lens 101 is prevented from being polluted, and the imaging quality of an optical system is ensured; the adhesive glue 103 for connecting the first lens 101 and the first lens barrel 102 is in a gap glue painting mode, and has an air exhausting function, so that part deformation caused by expansion of air can be avoided.

Fig. 17 is a schematic top view of the first barrel 102 cast according to the embodiment of the present application. Referring to fig. 17, in general, when the first barrel 102 is injection molded, the gate 1021 serves as a passage for pouring hot-melt plastic, and after cooling molding, the gate 1021 and excess plastic that is not molded need to be cut off, and the plastic between the first barrel 102 needs to be cut off, so that a cut surface 3000 at the end of the first barrel 102 is formed. In addition, in the process, the size of the first barrel 102 changes due to thermal expansion and cold contraction, wherein the size change is small near the notch surface 3000 due to the relatively thin wall thickness and small shrinkage rate; at the same time, because of the pressure loss at the portion away from the gate 1021, the contraction rate of the portion away from the cutout is larger than that of the portion near the gate 1021. Similar problems exist with the first lens 101 during the casting process, using the same principle. Fig. 18A is a cross-sectional view of the first lens 101 cast according to the embodiment of the present application, and fig. 18B is a top view of the first lens 101 cast according to the embodiment of the present application. Referring to fig. 18B, the first lens 101 has a notch surface 2000. Based on the same principle as casting the first barrel 102, the first lens 101 has a large shrinkage rate away from the notch surface 2000. Still referring to fig. 14B, further, in this embodiment, the first lens 101 has a first optical zone 1011 and a first structural zone 1012, the first structural zone 1012 having an extension. The first lens 101 is formed by an injection molding process and an outer side surface of the first lens 101 has a lens cut surface 2000, and the lens cut surface 2000 is a cut surface formed by cutting off a gate 1015 of the first structure region 1012. The first barrel 102 is formed by an injection molding process and an outer side surface of the first barrel 102 has a barrel cut surface 3000 formed by cutting off a gate portion 1021 of the first barrel 102. The gate portion is a portion corresponding to an injection port for injecting a liquid molding material in an injection molding process. In this embodiment, the lens notch plane 2000 is disposed on the opposite side of the barrel notch plane 3000, that is, the end of the first barrel 102 with a large shrinkage rate is disposed at the end of the first lens 101 with a small shrinkage rate, and the end of the first barrel 102 with a small shrinkage rate is disposed at the end of the first lens 101 with a large shrinkage rate. This design allows for a size compensation that makes the structure of the assembled first lens component more stable, which helps to reduce the second order variation after active alignment.

Fig. 19 shows a schematic cross-sectional view of a second lens component 200 of an optical lens according to an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, further, the inner side of the second lens barrel 202 may also have the second receiving hole, the second lens 201 is embedded in the second receiving hole, the second lens 201 has a second optical area for imaging and a second structural area surrounding the second optical area, the side surface of the second receiving hole forms a close fit with the outer side surface of the second structural area, and the second lens 201 is fixed to the second lens barrel 202 by an adhesive glue. The second accommodating hole in the inner side of the second barrel 202 may also include a second accommodating layer and a second glue layer, and the specific structure thereof is the same as the structure of the first accommodating hole 600 of the first barrel 102 in the embodiment shown in fig. 10, and is not repeated herein.

Further, in another embodiment of the present application, a camera module based on the optical lens is also provided. The camera module comprises an optical lens and a photosensitive assembly. Wherein the optical lens may be the optical lens in any of the foregoing embodiments.

Step S40, a bonding step. Bonding the first lens component 100 and the second lens component 200 to support and fix the relative position of the first lens component 100 and the second lens component 200, wherein an included angle alpha between the axis of the first lens component 100 and the axis of the second lens component 200 is not zero.

Referring to fig. 12, in the present embodiment, in the preparation step, the inner side of the first barrel 102 has a first accommodation hole 600, the first accommodation hole 600 has a first accommodation hole side surface 6011 and a first accommodation hole top surface 6012, a middle area of the first accommodation hole top surface 6012 has a light passing hole 700, the first lens 101 is embedded in the first accommodation hole 600, the first lens 101 has a first optical zone 1011 for imaging and a first structural zone 1012 surrounding the first optical zone 1011, the first accommodation hole side surface 6011 forms a tight fit with an outer side surface 1013 of the first structural zone 1012, and the first lens 101 is fixed with the first barrel 102 by an adhesive glue 103.

In one embodiment, the first receiving hole includes a first receiving layer and a first drawing layer located below the first receiving layer, the first receiving layer has a first receiving hole side surface and a first receiving hole top surface, the height of the first receiving hole side surface is smaller than the thickness of the first structure area, the first drawing layer has a first drawing layer top surface and a first drawing layer side surface, the distance from the first drawing layer side surface to the optical axis is greater than the distance from the first receiving hole side surface to the optical axis, and a gap between the first structure area outer side surface, the first drawing layer top surface and the first drawing layer side surface forms a first drawing area, wherein step S10 may include substeps 101, S102 and S103. Steps S101, S102 and S103 are as follows:

in step S101, fig. 20 shows a schematic cross-sectional view of a first lens part 100 of an optical lens according to an embodiment of the present application. Wherein the cross section is a cross section passing through an optical axis of the optical lens. Referring to fig. 20, the first barrel 102 is inverted. Fig. 21A illustrates a top view of the first barrel 102 of the first lens part 100 of the optical lens of fig. 20, and the first accommodation hole side 6011 has a polygonal structure with reference to fig. 21A;

step S102, referring to fig. 20, the first lens 101 is inserted into the first accommodating hole 600, such that the first accommodating hole top surface 6012 contacts with the top surface of the first structure area 1012 of the first lens 101, and the first optical area 1011 of the first lens 101 is located at the light passing hole 700. Fig. 21B shows a top view of the first lens part 100 of the optical lens of fig. 11, referring to fig. 21B, wherein the cut surface 2000 of the first lens 101 is disposed on the side opposite to the cut surface 3000 of the first barrel 102;

step S103, fig. 21C shows a top view of the first lens part 100 of the optical lens of fig. 20, and referring to fig. 21C, the adhesive glue 103 is drawn to the first glue layer 602 in the first glue area 800, so as to bond the first lens 101 and the first lens barrel 102, wherein the adhesive glue 103 forms a ring shape with a gap.

Further, in one embodiment, step S101 includes identifying the first barrel 102, identifying the cut surface 3000 of the first barrel 102, and having the cut surface 3000 of the first barrel 102 at a predetermined position. Meanwhile, the first accommodating hole side surface 6011 of the first barrel 102 is identified, whether the first accommodating hole side surface 6011 is damaged or not is judged, whether the second distance d is greater than the radius r of the first lens 101 or not is judged, and if the first accommodating hole side surface 6011 is damaged or the second distance d is less than the radius r of the first lens 101, the first barrel 102 is determined to be a defective product.

Further, in one embodiment, step S102 includes identifying the first lens 101, identifying the cut surface 2000 of the first lens 101, and disposing the cut surface 2000 of the first barrel 102 on the side opposite to the cut surface 3000 of the first barrel 102.

Fig. 22 illustrates a bottom view of the first lens component 100 of the optical lens according to an embodiment of the present application, and referring to fig. 22, further, in step S103, the adhesive 103 is drawn to the first adhesive layer 602 in the first adhesive region 800 to form a ring shape having a notch, where the notch is disposed corresponding to a vertex of the polygon.

In one embodiment, step S10 may include sub-steps S104 and S105. Steps S104 and S105 are as follows:

step S104, inverting the second lens barrel 202, wherein the inner side of the second lens barrel is provided with a plurality of stages of stepped second accommodating holes, and the side surfaces of the plurality of stages of second accommodating holes are circular;

and S105, sequentially embedding a plurality of second lenses into the multistage second accommodating holes, wherein each second lens is tightly matched with the corresponding stage of second accommodating hole.

In one embodiment, at least one of the second accommodating holes of the plurality of stages is a polygonal accommodating hole having a second accommodating hole side surface and a second accommodating hole top surface, and the second accommodating hole side surface is polygonal on a plane perpendicular to the optical axis of the optical lens, the second lens has a second optical area for imaging and a second structural area surrounding the second optical area and the outer side surface of the second structural area is circular, wherein steps S104 and S105 can be replaced by steps S104, S105 and S106. Steps S104, S105 and S106 are as follows:

step S104, inverting the second lens barrel 202, wherein the side surface of the second accommodating hole is in a polygonal structure;

step S105, inserting the second lens 201 into the first accommodating hole 600, so that the side surface of the second accommodating hole contacts with the outer side surface of the second structure area to form a tight fit, and the top surface of the second structure area is supported against the top surface of the second accommodating hole;

step S106, drawing the adhesive glue into the gap between the outer side surface of the second lens 201 and the side surface of the first accommodating hole 600, so as to bond the second lens 201 and the second barrel 202, wherein the adhesive glue forms a ring shape with a gap.

In one embodiment, step S10 may include sub-steps S1001, S1002, S1003, and S1004, among others. Steps S1001, S1002S, 1003, and S1004 are as follows:

step S1001, forming a first lens with a gate part on the side surface through an injection molding process, wherein the gate part is a part corresponding to an injection port used for injecting a liquid molding material in the injection molding process;

step S1002, cutting off a gate portion of the first lens, thereby forming a lens cut surface on a side surface of the first lens;

a step S1003 of cutting off the gate portion of the first barrel, thereby forming a barrel cut surface on a side surface of the first barrel;

step S1004 of setting the lens cut surface on a side opposite to the barrel cut surface in the step of fitting the first lens into the first accommodation hole.

According to an embodiment of the present application, there is also provided a molding method of a lens barrel, including:

step S100, a mould is prepared, wherein the mould comprises a movable side mould plate, a fixed side mould plate, a plurality of tooth plate groups and a mould core assembly, the movable side mould plate and the fixed side mould plate are detachably connected through the tooth plate groups, the mould core assembly comprises a containing cavity formed by a movable mould core and a fixed mould core, and hot-melt plastics can form a lens cone with a polygonal shape in the containing cavity.

Step S200, injecting hot-melt plastic into a mold with a polygonal shape;

step S300, cutting off the gate portion of the lens barrel, thereby forming a barrel cut surface on a side surface of the lens barrel.

Further, in another embodiment of the present application, an assembling method of an image pickup module based on the optical lens is also provided. The camera module assembling method comprises assembling an optical lens and a photosensitive assembly. The assembling method of the optical lens can be the assembling method of the optical lens in any of the foregoing embodiments.

On the basis of the above embodiment, further, the number of the first mirror plates 101 may be smaller than the number of the second mirror plates 201, and the second mirror plates 201 are closer to the photosensitive chip than the first mirror plates 101. Further, in one embodiment, the number of the first lenses 101 is one, and the outer diameter of the first lenses 101 is larger than the second lens 201 with the smallest outer diameter.

Further, in another embodiment of the present application, a camera module based on the optical lens is further provided. The camera module comprises an optical lens and a photosensitive assembly. Wherein the optical lens may be the optical lens in any of the embodiments described above. The embodiment can reduce the secondary variation of the optical system of the camera module after the active calibration is completed, thereby ensuring the imaging quality of the camera module and improving the yield in mass production. In some embodiments, the camera module may further include a motor (or other type of optical actuator), and the optical lens may be mounted within a cylindrical carrier of the motor, the base of the motor being mounted to the top surface of the photosensitive assembly. The photosensitive member may include, for example, a wiring board, a photosensitive chip mounted on a surface of the wiring board, a ring-shaped support formed on or mounted on the surface of the wiring board and surrounding the photosensitive chip, and a color filter. The ring support may form a step, and the color filter is mounted on the step of the ring support. The base of the motor is mounted on the top surface of the annular support body.

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. Fig. 23A shows a relative position adjustment manner in the active calibration in one embodiment of the present application. In this adjustment manner, the first lens part 100 (or the first lens 101) can move along the x, y, and z directions relative to the second lens part 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. 23B illustrates rotational adjustment in active calibration of another embodiment of the present application. 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. 23A. 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. 23C shows a relative position adjustment manner with v and w direction adjustments added in the active calibration of yet another embodiment of the present application. 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.

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 an axis of the first lens component 100 and an axis of the second lens component 200 may be different from zero.

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 according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made 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. An optical lens, comprising:

a first lens component, comprising:

one or more first lenses;

a first lens barrel, having a composite accommodating hole on the inner side, at least one first lens being inserted into the composite accommodating hole, wherein the composite accommodating hole includes an annular accommodating area sidewall, the outer side surface of the inserted first lens includes a first area and a second area, and the first area and the second area are inserted into each other, wherein the first area is an area of the outer side surface of the first lens, which bears against the accommodating area sidewall, the second area is an area of the outer side surface of the first lens, which is exposed outside the accommodating area sidewall, and the distance from the accommodating area sidewall to the axis of the first lens part is smaller than the distance from the outer side surface of the first lens to the axis of the first lens part; and

2. An optical lens barrel according to claim 1, wherein the side wall of the receiving area has a boss formed to extend in an axial direction of the first barrel.

3. An optical lens according to claim 2, further comprising:

a first glue located in a first gap between the first lens component and the second lens component, the first glue adapted to support and secure the first lens component and the second lens component after curing.

4. The optical lens of claim 3, wherein the first lens has a first optical zone for imaging and a first structured zone surrounding the optical zone; and is

The composite containment hole further comprises:

the top surface of the glue painting area; and

the drawing glues the district lateral wall, the drawing glues the district lateral wall and is located the periphery of holding district lateral wall, wherein it is located to bond glue the district lateral wall is glued to the drawing picture the district top surface is glued to the drawing the boss and the region between the lateral surface of first lens, and bond and glue and pass through the second region with the lateral surface contact of first lens.

5. The optical lens barrel according to claim 4, wherein the top surface of the glue area is lower than the top surface of the accommodating area in a direction along an axis of the first barrel.

6. An optical lens according to claim 4, characterized in that the boss has an outer side face, and a gap is provided between the outer side face of the boss and the side wall of the glue area.

7. The optical lens as claimed in claim 4, wherein the plurality of bosses are distributed on the sidewall of the receiving area.

8. An optical lens according to claim 4, characterized in that the maximum thickness of the first region in the direction along the axis of the first barrel is 1/2-3/4 of the thickness of the structural zone.

9. An optical lens according to claim 4, characterized in that the maximum thickness of the second region in the direction along the axis of the first barrel is 1/4-1/2 of the thickness of the structural zone.

10. An optical lens according to claim 4, characterized in that the compound containment hole is formed integrally.

11. An optical lens barrel according to claim 10, wherein the first barrel is made of plastic and the first lens is made of glass.

12. An optical lens according to claim 4, wherein the side walls of the picture area and/or the top surface of the picture area are rough.

13. An optical lens according to claim 12, wherein the roughened surface is a roughened surface formed by a saw-tooth structure.

14. An optical lens according to claim 4, characterized in that the bosses have a rough outer surface in contact with the adhesive glue.

15. An optical lens according to claim 4, characterized in that the second area is roughened.

16. The optical lens as claimed in claim 4, wherein the side wall of the receiving area is circular on a plane perpendicular to the optical axis of the optical lens, the outer side surface of the first lens is circular, and the first lens is inserted into the composite receiving hole and forms a close fit with the contact portion of the side wall of the composite receiving hole and the outer side surface of the first lens.

17. An optical lens as claimed in claim 4, characterized in that the light aperture has a stray light reflecting surface which is at an angle to the optical axis of the optical lens.

18. An optical lens according to claim 4, wherein the adhesive is formed in a ring shape having a notch.

19. An optical lens according to claim 4, characterized in that the transition between the first region and the second region is arc-shaped.

20. The optical lens barrel according to claim 4, wherein the receiving-area sidewall includes a receiving-area sidewall body and a boss inner side, and a distance from the boss inner side to the central axis of the first barrel is smaller than a distance from the receiving-area sidewall body to the central axis of the first barrel.

21. An optical lens according to claim 4, wherein the bosses are arranged at equal intervals around the axis of the first barrel, and the angle occupied by each boss is 20 ° to 40 ° with respect to the central angle.

22. The utility model provides a module of making a video recording which characterized in that includes: an optical lens as claimed in any one of claims 1 to 19.

23. An optical lens assembly method, wherein the optical lens includes a first lens component and a second lens component, wherein the first lens component includes a first barrel and at least one first lens mounted within the first barrel, and wherein the second lens component includes a second barrel and at least one second lens mounted within the second barrel, the optical lens assembly method comprising:

bonding the first lens piece and the second lens piece to support and fix the relative positions of the first lens piece and the second lens piece;

the inner side of the first lens barrel is provided with a composite containing hole, at least one first lens is embedded into the composite containing hole, the composite containing hole comprises an annular containing area side wall, the outer side surface of the embedded first lens comprises a first area which is abutted to the containing area side wall and a second area which is exposed out of the containing area side wall, the first area and the second area are embedded into each other, the distance from the containing area side wall to the axis of the first lens part is smaller than the distance from the outer side surface of the first lens to the axis of the first lens part, and bonding glue bonds the first lens barrel and the first lens by contacting the second area.

24. A camera module assembly method is characterized by comprising the following steps: assembling an optical lens using the optical lens assembly method of claim 23; and manufacturing a camera module based on the assembled optical lens.

25. An optical lens, comprising:

a first rubber located in a first gap between a first lens component and a second lens component, the first rubber being adapted to support and fix the first lens component and the second lens component after curing, wherein an included angle between an axis of the first lens component and an axis of the second lens component is not zero;

wherein the inner side of the first lens barrel has a first containing hole, at least one of the at least one first lens is embedded into the first containing hole, the first containing hole has a first containing hole side surface, the embedded first lens has a first outer side surface, and

the first outer side includes:

a non-contact portion which is not in direct contact with a side surface of the first accommodation hole and is bonded to the first barrel by an adhesive paste;

the first lens is formed by an injection molding process and an outer side surface of the first lens has a lens cut surface;

the first lens barrel is formed through an injection molding process, and the outer side surface of the first lens barrel is provided with a lens barrel notch surface; and

26. An optical lens barrel according to claim 25, wherein the side of the first receiving hole is polygonal, the side of the first lens is circular, and the inserted first lens and the first receiving hole form a close fit at the contact portion.

27. The optical lens of claim 26, wherein the first receiving hole further has a first receiving hole top surface, a middle area of the first receiving hole top surface has a light through hole, the first lens has a first optical zone for imaging and a first structure zone surrounding the first optical zone and an outer side surface of the first structure zone is circular, the top surface of the first structure zone bears against the first receiving hole top surface, and a diameter of an inscribed circle of the polygon of the first receiving hole side surface is smaller than a diameter of a circle of the outer side surface of the first structure zone to form a tight fit at a contact portion of the first receiving hole side surface and the outer side surface of the first structure zone.

28. An optical lens according to claim 27, characterized in that the area between the first receptacle hole side face, the first receptacle hole top face and the outer side face of the first structure region is provided with the adhesive glue.

29. An optical lens according to claim 28, characterised in that the polygon is a regular polygon.

30. The optical lens barrel according to claim 28, wherein the first receiving hole includes a first receiving layer and a first drawing layer located below the first receiving layer, the first receiving layer has the first receiving hole side surface and the first receiving hole top surface, the height of the first receiving hole side surface is smaller than the thickness of the first structure area, the first drawing layer has a first drawing layer top surface and a first drawing layer side surface, the distance from the first drawing layer side surface to the optical axis is greater than the distance from the first receiving hole side surface to the optical axis, a first drawing area is formed in a gap between the outer side surface of the first structure area, the first drawing layer top surface and the first drawing layer side surface, and the adhesive glue is arranged in the first drawing area to fix the first lens and the first lens barrel together.

31. An optical lens element according to claim 30, wherein a first adhesive receiving area is formed between the first receiving hole side surface, the first receiving hole top surface and the outer side surface of the first structure area, and the first adhesive receiving area communicates with the first painting area to receive the adhesive.

32. The optical lens of claim 27, wherein a first distance of the first receiving hole is at least 0.015mm greater than a radius of the first lens inserted into the first receiving hole, wherein the first distance is a distance from a vertex of the polygon of the first receiving hole to a center of the first receiving hole.

33. An optical lens according to claim 27, characterized in that the second distance of the first receiving hole is smaller than the radius of the first lens fitted therein to form a tight fit at the contact portion, and the difference between the radius of the first lens and the second distance, which is the distance from the edge of the polygon of the first receiving hole to the center of the first receiving hole, is not more than 0.005 mm.

34. An optical lens according to claim 30, wherein the adhesive glue in the first glue area forms a ring shape with a gap.

35. An optical lens barrel according to claim 26, wherein the inner side of the second lens barrel has a second receiving hole, the second lens is inserted into the second receiving hole, the second lens has a second optical area for imaging and a second structure area surrounding the second optical area, the side surface of the second receiving hole forms a close fit with the outer side surface of the second structure area, and the second lens is fixed with the second lens barrel by the adhesive glue.

36. An optical lens element according to claim 25 wherein the first piece of glue is adapted to support and secure the first and second lens components so that the relative positions of the first and second lens components are maintained in the relative positions determined by active alignment.

37. The utility model provides a module of making a video recording which characterized in that includes: an optical lens as claimed in any one of claims 25 to 36.

38. An optical lens assembly method, wherein the optical lens includes a first lens component and a second lens component, wherein the first lens component includes a first barrel and at least one first lens mounted within the first barrel, and wherein the second lens component includes a second barrel and at least one second lens mounted within the second barrel, the optical lens assembly method comprising:

wherein, the inner side of the first lens cone is provided with a first containing hole, the first containing hole is provided with a first containing hole side surface and a first containing hole top surface, the middle area of the first containing hole top surface is provided with a light through hole, and the side surface of the first accommodating hole is polygonal on a plane perpendicular to the optical axis of the optical lens, the first lens has a first optical area for imaging and a first structural area surrounding the first optical area and the outer side of the first structural area is circular, the first lens is embedded into the first containing hole and forms close fit with the contact part of the outer side surface of the first structural area on the side surface of the first containing hole, the top surface of the first structural area is supported against the top surface of the first containing hole, adhesive glue is further arranged between the outer side face of the first structure area and the inner side face of the first lens barrel so as to fix the first lens and the first lens barrel together;

prior to the step of pre-positioning comprising:

cutting off a gate portion of the first lens to form a lens cut surface on a side surface of the first lens;

and in the step of fitting the first lens into the first accommodation hole, the lens cut surface is provided on a side opposite to the barrel cut surface.

39. The lens assembling method of claim 38, wherein the first receiving hole includes a first receiving layer and a first drawing layer located below the first receiving layer, the first receiving layer has a first receiving hole side surface and a first receiving hole top surface, the height of the first receiving hole side surface is smaller than the thickness of the first structure area, the first drawing layer has a first drawing layer top surface and a first drawing layer side surface, the distance from the first drawing layer side surface to the optical axis is greater than the distance from the first receiving hole side surface to the optical axis, a gap between the first structure area outer side surface, the first drawing layer top surface and the first drawing layer side surface forms a first drawing area, and the pre-positioning step further includes:

inverting the first barrel;

inserting the first lens into the first accommodating hole, enabling the top surface of the first structure area of the first lens to bear against the top surface of the first accommodating hole, and enabling the first optical area of the first lens to be located in the light through hole;

and drawing the bonding glue in the first glue drawing area, and curing the bonding glue to realize the bonding of the first lens and the first lens barrel, wherein the bonding glue forms a ring shape with a notch.

40. A lens assembling method according to claim 38, further comprising, before the pre-positioning step:

41. The lens assembly method according to claim 40, wherein the side surfaces of the multistage second accommodation holes are each circular; and the number of the first and second groups,

in the step of sequentially embedding the plurality of second lenses into the multistage second accommodating holes, each second lens forms a close fit with the corresponding stage of second accommodating hole.

42. The lens assembly method according to claim 40, wherein at least one of the second receiving holes of the plurality of stages is a polygonal receiving hole having a second receiving hole side surface and a second receiving hole top surface, and the second receiving hole side surface is polygonal on a plane perpendicular to the optical axis of the optical lens, the second lens has a second optical area for imaging and a second structural area surrounding the second optical area, and an outer side surface of the second structural area is circular; and

the step of sequentially inserting the plurality of second lenses into the multistage second accommodation holes further comprises: inserting at least one second lens into the corresponding polygonal receiving hole; the second lens is embedded into the polygonal containing hole, the contact part of the side face of the second containing hole and the outer side face of the second structure area is in close fit, the top face of the second structure area is supported against the top face of the second containing hole, glue bonding glue is drawn between the outer side face of the second structure area and the inner side face of the second lens barrel, and then the bonding glue is solidified to fix the second lens and the second lens barrel together.

43. The lens assembly method according to claim 38, wherein the molding method of the first barrel or the second barrel includes:

injecting hot-melt plastic into a forming cavity of a mold to obtain a formed lens cone, wherein the mold is provided with a movable side template, a fixed side template, a plurality of tooth plate groups and a mold core assembly, the movable side template and the fixed side template are detachably connected through the plurality of tooth plate groups, the mold core assembly is provided with the forming cavity formed by a movable mold core and a fixed mold core, and the shape of the forming cavity corresponds to the first lens cone or the second lens cone; and

44. A camera module assembly method is characterized by comprising the following steps: assembling an optical lens using the optical lens assembling method according to any one of claims 38 to 43; and manufacturing a camera module based on the assembled optical lens.