CN111522113A

CN111522113A - Optical lens, camera module and assembling method thereof

Info

Publication number: CN111522113A
Application number: CN201910108672.7A
Authority: CN
Inventors: 陈烈烽; 梅哲文; 田中武彦; 孙鑫翔; 刘林
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2019-02-03
Filing date: 2019-02-03
Publication date: 2020-08-11

Abstract

The present invention provides an optical lens comprising: a first lens component comprising at least one first lens; the second lens component comprises at least one second lens, and the at least one second lens and the at least one first lens form an imaging optical system together; and a first glue located in a first gap between the first lens piece and the second lens piece, the first glue adapted to support and secure the first lens piece and the second lens piece after curing; the first lens component is provided with a first bottom surface, the second lens component is provided with a second top surface, and the first bottom surface and/or the second top surface are/is provided with a painting area for arranging a first glue material; and the first bottom surface is provided with a first glue resisting part, and/or the second top surface is provided with a third glue resisting part. The invention also provides a corresponding camera module and an assembling method of the optical lens. The invention can prevent the first rubber material from influencing the optical lens and can improve the imaging quality of the optical lens or the camera module.

Description

Optical lens, camera module and assembling method thereof

Technical Field

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

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.

At the in-process that improves the camera shooting capability of the module of making a video recording, the main factor that influences the imaging quality has three: firstly, the imaging quality of the lens is high, and the high-quality lens can well correct the aberration of an optical system to achieve higher imaging quality; secondly, the light sensing capability of the light sensing chip is generally stronger when the single pixel area of the light sensing chip is larger; and thirdly, the ISP (image processing algorithm) has different algorithm capabilities and different image optimization capabilities of different manufacturers, and even if the ISP has hardware with the same specification, images finally obtained through processing of different manufacturers have larger difference. Among the above factors, the quality of the lens determines the level of the imaging capability of the whole camera module, and in order to obtain high-quality large-aperture lenses, large wide-angle lenses, telephoto lenses and higher-quality images, the lens designed by manufacturers contains more and more lenses, and six, seven or more lenses are obtained. The requirement on the precision of lens assembly is very high due to the increase of the number of lenses, but due to the existence of assembly tolerance and component tolerance, the imaging quality is affected as the tolerance of the final lens forming is larger, meanwhile, the sensitivity of the large-aperture and large-wide-angle lens is higher, and the requirement on the precision of lens assembly is higher, and in all, due to the existence of component tolerance and assembly tolerance, the imaging quality and yield of the lens are greatly affected.

In order to overcome the difficulties, the invention provides a multi-group lens, which can adjust the imaging quality of the lens through active correction, and when the component tolerance and the assembly tolerance are in a certain range, the imaging quality of the lens can be compensated through active correction, and then a plurality of groups are assembled and fixed through adhesive bonding to form a lens with a perfect optical system.

However, when assembling the lens, the upper and lower sub-lenses need to be bonded and fixed by using a glue material, but the glue material is in a liquid state when not cured and has fluidity, and there is a time interval between the two processes of arranging the glue material between the lens component and the curing glue material, so that the glue material tends to flow and spread to both sides in the painting area, meanwhile, when arranging the glue material in the painting area, the glue material is generally in a ring shape with an oval cross section, and the upper and lower sub-lenses have a small gap after active alignment, which causes the glue material to be squeezed and spread to the inside and the outside of the lens. The glue material diffusing to the outside affects the appearance, and overflows to affect a motor or other components, so that the overall performance and reliability of the module are affected; the glue material diffused to the inside flows to the position, which is not expected to be bonded, in the lens, so that the performance and the reliability of the lens are influenced; secondly, the lens barrel of the sub-lens and the lens are easy to contact with the adhesive material bonded between the lens barrel and the lens, and the two adhesive materials have different components and performances, so that the overall performance and reliability of the two adhesive materials are influenced.

Disclosure of Invention

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

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

a first lens component comprising at least one first lens;

the second lens component comprises at least one second lens, and the at least one second lens and the at least one first lens form an imaging optical system together; and

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

the first lens component is provided with a first bottom surface, the second lens component is provided with a second top surface, and the first bottom surface and/or the second top surface are/is provided with a painting area for arranging a first glue material;

and the first bottom surface is provided with a first glue resisting part, and/or the second top surface is provided with a third glue resisting part.

In one embodiment, the first lens part further comprises a first barrel, the at least one first lens being mounted within the first barrel, the second lens part further comprises a second barrel, the at least one second lens being mounted within the second barrel,

wherein the first lens cone is provided with a first bottom surface, the second lens cone is provided with a second top surface, the first bottom surface and/or the second top surface are/is provided with a glue painting area for arranging a first glue material,

and wherein the at least one first lens has an optical zone and the at least one second lens also has an optical zone, the first glue blocking portion being between the glue zone and the optical zone of the at least one first lens; and/or the third glue blocking portion is between the glue area and the optical area of the at least one second lens.

In one embodiment, the at least one first lens includes an optical zone and a non-optical zone, wherein the non-optical zone is disposed outside of the optical zone, the second lens component further includes a second barrel, the at least one second lens is mounted within the second barrel,

the non-optical area of at least one first lens is provided with a first bottom surface, the second lens barrel is provided with a second top surface, the first bottom surface and/or the second top surface is provided with a glue area for arranging a first glue material,

and wherein the at least one second lens also has an optical zone, the first glue blocking portion is between the glue area and the optical zone of the at least one first lens; and/or the third glue blocking portion is between the glue area and the optical area of the at least one second lens.

In one embodiment, the at least one first lens has an outer side, the first barrel has a first inner side;

the outer side surface of at least one first lens is connected with the first inner side surface of the first lens barrel through a second rubber material.

In one embodiment, the at least one first lens is more than one, and the outer side surface of the lens close to the first bottom surface and the first inner side surface of the at least one first lens are connected by using a second glue material.

In one embodiment, the first glue blocking portion is a groove or a boss, and the third glue blocking portion is a groove or a boss.

In one embodiment, the first glue resisting part is a groove, the width of the first glue resisting part is 0.01mm-0.3mm, and the depth of the first glue resisting part is 0.02mm-0.1 mm.

In one embodiment, the first glue blocking part is a boss, the width of the first glue blocking part is 0.01mm-0.3mm, and the height of the first glue blocking part is 0.02mm-0.1 mm.

In one embodiment, the third glue blocking portion is a groove, the width of the third glue blocking portion is 0.2mm-1mm, and the depth of the third glue blocking portion is 0.02mm-0.085 mm.

In one embodiment, the third glue blocking part is a boss, the width of the third glue blocking part is 0.2mm-1mm, and the height of the third glue blocking part is 0.02mm-0.085 mm.

In one embodiment, the width of the first glue material after curing is 0.15mm to 1mm, and the height of the first glue material after curing is 0.04mm to 0.1 mm.

In one embodiment, the first bottom surface has a first glue blocking portion thereon, the first glue blocking portion is between the glue painting area and the optical area of the at least one first lens, the first glue blocking portion includes a distal end away from the at least one first lens, the first lens barrel has a first outer side surface, and a distance between the distal end of the first glue blocking portion and the first outer side surface is greater than or equal to 0.35 mm.

In one embodiment, the second top surface has a third glue blocking portion thereon, the third glue blocking portion is between the glue area and the optical area of the at least one second lens, the third glue blocking portion includes a distal end away from the at least one second lens, the second barrel has a second outer side surface, and a distance between the distal end of the third glue blocking portion and the second outer side surface is greater than or equal to 0.45 mm.

In one embodiment, the first lens barrel has a first outer side surface, and a second glue blocking portion is arranged between the first outer side surface and the glue painting area and is located on the first bottom surface.

In one embodiment, the second lens barrel has a second outer side surface, and a fourth glue blocking portion is arranged between the second outer side surface and the glue painting area and is located on the second top surface.

In one embodiment, the first glue material is distributed annularly on the first bottom surface and/or the second top surface.

In one embodiment, the first glue blocking portions are distributed on the first bottom surface in a ring shape.

In one embodiment, the third glue blocking portions are distributed on the second top surface in an annular shape.

In one embodiment, the second lens barrel has a second outer side surface, and the first glue material is in contact with the second outer side surface of the second lens barrel and is not in contact with the third glue blocking portion.

In one embodiment, the second lens barrel has a second outer side surface, and the first glue material is in contact with the second outer side surface of the second lens barrel and in contact with the third glue blocking portion.

In one embodiment, the second lens barrel has a second outer side surface, and the first glue material does not contact with the second outer side surface of the second lens barrel and does not contact with the third glue blocking portion.

In one embodiment, the first bottom surface has a first glue blocking portion thereon, the first glue blocking portion being between the glue area and the optical area of the at least one first lens; the second top surface is provided with a third glue blocking part, and the third glue blocking part is arranged between the glue painting area and the optical area of the at least one second lens;

wherein the first glue blocking portion comprises a proximal end adjacent to the at least one first lens and a distal end distal to the at least one first lens, and the third glue blocking portion comprises a proximal end adjacent to the at least one second lens and a distal end distal to the at least one second lens;

and the distal end of the third glue resisting part is positioned between the proximal end and the distal end of the first glue resisting part.

In one embodiment, the at least one first lens has a first structural area having a top surface of an arcuate configuration, and the first barrel has a first inner bottom surface having an arcuate surface that mates with the top surface of the arcuate configuration of the first structural area.

According to an aspect of the present invention, there is also provided a camera module including the optical lens of any one of the above.

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

preparing a first lens part and a second lens part separated from each other;

the first lens part and the second lens part form a complete optical system; and

connecting the first lens part and the second lens part through a first rubber material;

the first lens component is provided with a first bottom surface, the second lens component is provided with a second top surface, the first bottom surface is provided with a first glue blocking portion, and/or the second top surface is provided with a second glue blocking portion.

In one embodiment, the first lens part includes a first barrel and at least one first lens mounted in the first barrel, and the second lens part includes a second barrel and at least one second lens mounted in the second barrel, and in the step of preparing the first lens part and the second lens part separated from each other, includes:

the first lens barrel and the at least one first lens are connected through the second rubber material.

In one embodiment, the second lens part includes a second barrel and at least one second lens mounted in the second barrel, and in the step of preparing the first lens part and the second lens part separated from each other, includes:

and assembling the second lens barrel and the at least one second lens.

In one embodiment, the step of combining the first lens component and the second lens component into a complete optical system comprises:

pre-positioning the first lens part and the second lens part to enable at least one first lens and at least one second lens to jointly form an imaging optical system; and

and performing active calibration according to the actual measurement imaging result of the optical system, and determining the relative positions of the first lens component and the second lens component.

In one embodiment, the first lens part includes a first barrel having a first bottom surface and at least one first lens mounted within the first barrel, the second lens part includes a second barrel having a second top surface and at least one second lens mounted within the second barrel,

wherein the first bottom surface and/or the second top surface is/are provided with a painting glue area for arranging a first glue material,

and wherein the at least one first lens has an optical zone, the at least one second lens also has an optical zone, the first base surface has a first resist portion thereon, the first resist portion is between the lens zone and the optical zone of the at least one first lens; and/or the second top surface is provided with a third glue blocking part, and the third glue blocking part is arranged between the glue painting area and the optical area of the at least one second lens.

In one embodiment, the step of determining the relative position of the first lens component and the second lens component in the active calibration based on the measured imaging result of the optical system comprises:

arranging a first glue material in the glue painting area; and

In one embodiment, the glue area is located on the first bottom surface;

wherein, in the step of drawing gluey district arrangement first gluey material, include:

and arranging a first glue material on the glue painting area on the first bottom surface.

In one embodiment, the glue area is located on the second top surface;

and arranging the first glue material on the glue painting area on the second top surface.

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

moving the first lens piece or the second lens piece away;

arranging a first glue material in the glue painting area; and

moving the first lens piece or the second lens piece back to the relative position of the active calibration.

In one embodiment, the glue area is located on the first bottom surface;

In one embodiment, the glue area is located on the second top surface;

wherein, in the drawing gluey district arranges first gluey material step, include:

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

1. the first glue blocking part is arranged between the glue painting area and the optical area of at least one first lens, and/or the third glue blocking part is arranged between the glue painting area and the optical area of at least one second lens, wherein the first glue blocking part can effectively prevent the second glue material from overflowing to the outer side of the lens, and simultaneously can also prevent the first glue material from flowing to the inner part of the lens, and the third glue blocking part can effectively prevent the first glue material from flowing to the inner part of the lens; the invention can prevent the first rubber material from influencing the lens and avoid the contact between the first rubber material and the second rubber material, thereby avoiding the influence on the performance and the reliability of the two rubber materials due to different components and performances between the two rubber materials.

2. In one embodiment, the distal end of the third glue blocking portion is located between the proximal end and the distal end of the first glue blocking portion, and during the flowing of the first glue material to the first lens and the second lens, the first glue blocking portion and the third glue blocking portion can simultaneously block the first glue material and form a glue blocking structure similar to a "relay", so that a good glue blocking effect is achieved, and the first lens or the second lens can be effectively prevented from being polluted by the first glue material; or under the condition that the first lens barrel is connected with the first lens through the second glue material, the first glue material and the second glue material are prevented from contacting with each other, so that the performance and the reliability of the two glue materials are prevented from being influenced.

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 according to an embodiment of the invention;

FIG. 2 illustrates a schematic partial cross-sectional view of the optical lens of the embodiment of FIG. 1 with the first lens component separated from the second lens component;

FIG. 3 shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4A shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4B shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4C shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4D shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4E shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4F shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4G shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 4H shows a schematic partial cross-sectional view of an optical lens of an embodiment of the invention;

FIG. 5A illustrates a relative position adjustment in active calibration in one embodiment of the invention;

FIG. 5B illustrates rotational adjustment in active calibration according to another embodiment of the present invention;

fig. 5C shows a relative position adjustment with added v, w direction adjustments in an active calibration according to yet another embodiment of the present invention.

Detailed Description

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

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

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

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

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

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

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

Fig. 1 shows a schematic cross-sectional view of an optical lens according to an embodiment of the present invention. The cross section is a cross section passing through an optical axis of the optical lens. In this embodiment, the optical lens 1000 includes a first lens component 100, a second lens component 200, and a first plastic 300. The first lens component 100 includes a first barrel 102 and a first lens 101 installed in the first barrel 102, and the first barrel 102 and the first lens 101 are optionally connected by using a second plastic material 103. In other embodiments, the first barrel 102 and the first lens 101 are optionally connected by using a connection manner such as an interference fit or a snap fit, instead of using an adhesive such as the second adhesive 103. When the first lens barrel 102 and the first lens barrel 101 are optionally connected by the second plastic material 103, at least one first lens 101 has an outer side surface 10121, the first lens barrel 102 has a first inner side surface 1022, the at least one first lens 101 and the first lens barrel 102 are connected by the second plastic material 103, and the second plastic material 103 connects the outer side surface 10121 of the at least one first lens 101 and the first inner side surface 1022 of the first lens barrel 102. In one embodiment, the first barrel 102 and the first lens 101 are optionally connected by using a contact manner such as interference fit or snap fit, and the second rubber material 103 is used to connect the outer side surface 10121 of at least one first lens 101 and the first inner side surface 1022 of the first barrel 102, so as to reinforce the connection and enhance the strength. In yet another embodiment (not the embodiment shown in fig. 1, but refer to the position of the feature in fig. 1), the first barrel 102 has a first bottom surface 1021, and when the number of the at least one first lens 101 is more than one, the outer side surface 10121 of the lens close to the first bottom surface 1021 in the at least one first lens 101 and the first inner side surface 1022 of the first barrel 102 are connected by using the second adhesive material 103, that is, when the number of the first lens 101 is more than one, the outer side surface of the first lens 101 closest to the first bottom surface 1021 of the first barrel 102 and the first inner side surface 1022 of the first barrel 102 are connected by using the second adhesive material 103.

Referring also to fig. 1, the second lens part 200 includes a second barrel 202 and at least one second lens 201 mounted in the second barrel 202, and the at least one second lens 201 and the first lens 101 together constitute an imageable optical system, wherein the number of the at least one second lens 201 in fig. 1 is only exemplary and not limited, and the number of the at least one second lens 201 may be 6 or 7. The first rubber 300 is located in a first gap 400 between the first lens component 100 and the second lens component 200, and the first rubber 300 is adapted to support and fix the first lens component 100 and the second lens component 200 after curing. The first barrel 102 has a first bottom 1021, the second barrel 202 has a second top 2021, and the first bottom 1021 and/or the second top 2021 have a painting area for disposing the first glue material 300. The glue area may be located on the first bottom surface 1021 or the second top surface 2021, or on both the first bottom surface 1021 and the second top surface 2021. Since the first adhesive material 300 has fluidity, the painting area is an initial area for arranging the first adhesive material, and is not a final position area of the first adhesive material 300 shown in fig. 1. As shown in fig. 1, the at least one first lens 101 has an optical area 1011, the at least one second lens 201 also has an optical area 2011, the first bottom surface 1021 has a first glue blocking portion 10211, the first glue blocking portion 10211 is between the glue area and the optical area 1011 of the at least one first lens 101, the second top surface 2021 has a third glue blocking portion 20211, and the third glue blocking portion 20211 is between the glue area and the optical area 2011 of the at least one second lens 201. In the embodiment shown in fig. 1, both the first glue resisting portion 10211 and the third glue resisting portion 20211 are provided, and in other embodiments, only either one of the first glue resisting portion 10211 and the third glue resisting portion 20211 may be provided.

Referring to fig. 1, the first glue blocking portion 10211 is a groove, and the third glue blocking portion 20211 is a boss. In other embodiments, the first glue blocking portion 10211 may be a boss, and the third glue blocking portion 20211 may be a groove; or the first glue resisting part 10211 and the third glue resisting part 20211 may also be grooves at the same time, or bosses at the same time. In fig. 1, the optical lens 1000 has both the first glue blocking portion 10211 and the third glue blocking portion 20211, and in other embodiments, only one of the first glue blocking portion 10211 or the third glue blocking portion 20211 may be provided.

In one embodiment, the first glue material 300 is distributed on the first bottom surface 1021 and/or the first top surface 2021 in a ring shape. In one embodiment, the first glue blocking portions 10211 are distributed annularly on the first bottom surface 1021. In one embodiment, the third glue blocking portions 20211 are annularly distributed on the first top surface 2021.

In the above embodiment, the first glue blocking portion 10211 is disposed between the glue area and the optical area 1011 of the first lens 101, and the third glue blocking portion 20211 is disposed between the glue area and the optical area 2011 of the second lens 201, so that the first glue material 300 can be limited, and the first lens 101 or the second lens 201 can be prevented from being contaminated by the first glue material 300 through the first gap 400; or under the condition that the first barrel 102 and the first lens 101 are connected through the second plastic material 103, the first plastic material 300 and the second plastic material 103 are prevented from contacting with each other, so that the performance and reliability of the first plastic material 300 and the second plastic material 103 are prevented from being affected. Under the condition that the first barrel 102 and the first lens 101 are connected by the second adhesive material 103, the first adhesive blocking portion 10211 can effectively prevent the second adhesive material 103 from overflowing to the outside of the lens, and can also prevent the first adhesive material 300 from flowing to the inside of the lens, thereby effectively preventing the first adhesive material 300 and the second adhesive material 103 from contacting with each other.

In one embodiment, the first lens component does not include a first barrel, includes at least one first lens, and the at least one first lens includes an optical zone and a non-optical zone, wherein the non-optical zone is disposed outside the optical zone. The non-optical area of at least one first lens has a first bottom surface having a glue area for disposing a first glue material. The first glue blocking part is arranged between the glue painting area and the optical area of the at least one first lens.

Fig. 2 shows a schematic partial cross-sectional view of the optical lens 1000 of the embodiment of fig. 1 with the first lens component 100 separated from the second lens component 200. Referring to fig. 2, the first lens unit 100 and the second lens unit 200 are separated, the first glue blocking portion 10211 is a groove, and the third glue blocking portion 20211 is a boss. In fig. 2, the first glue blocking portion 10211 is a groove, the width of the first glue blocking portion 10211 is 0.01mm to 0.3mm, and the depth of the first glue blocking portion 10211 is 0.02mm to 0.1 mm. The third glue-resisting part 20211 is a boss, the width of the third glue-resisting part 20211 is 0.2mm-1mm, and the height of the third glue-resisting part 20211 is 0.02mm-0.085 mm.

In other embodiments, the third glue resisting portion may be a groove, the width of the third glue resisting portion is 0.2mm-1mm, and the depth of the third glue resisting portion is 0.02mm-0.085 mm.

In other embodiments, the first glue blocking part is a boss, the width of the first glue blocking part is 0.01mm-0.3mm, and the height of the first glue blocking part is 0.02mm-0.1 mm.

Referring to fig. 1, after the first rubber 300 between the first lens part 100 and the second lens part 200 is cured, the width of the first rubber 300 is 0.15mm to 1mm, preferably greater than or equal to 0.3mm and less than or equal to 1mm, and the height of the first rubber 300 is 0.04mm to 0.1 mm.

Referring to fig. 2, the distance from the distal end d of the third glue blocking portion 20211 to the second outer side surface 2023 of the second barrel 200 is equal to or greater than 0.45 mm.

Referring to fig. 2, the distance from the distal end b of the first glue blocking portion 10211 to the first outer side surface 1023 of the first lens barrel 100 is equal to or greater than 0.35 mm.

Referring to fig. 2, the first bottom surface 1021 has a first glue blocking portion 10211, and the first glue blocking portion 10211 is located between the glue area (the first glue 300 in fig. 2 is not yet extruded and deformed, so the position of the first glue 300 in fig. 2 can be the glue area, that is, the glue area is the position of the first glue 300 in fig. 2) and the optical area of the at least one first lens 101; the second top surface 2021 has a third glue-blocking portion 20211 thereon, and the third glue-blocking portion 20211 is located between the glue area and the optical area of the at least one second lens 201. Wherein the first glue blocking portion 10211 comprises a proximal end a adjacent to the at least one first lens 101 and a distal end b distal to the at least one first lens 101, and the third glue blocking portion 20211 comprises a proximal end c adjacent to the at least one second lens 201 and a distal end d distal to the at least one second lens 201; and wherein the distal end d of the third glue blocking portion 20211 is located between the proximal end a and the distal end b of the first glue blocking portion 10211.

In the embodiment shown in fig. 2, the distal end d of the third glue blocking portion 20211 is located between the proximal end a and the distal end b of the first glue blocking portion 10211, during the first glue 300 flowing to the first lens 101 and the second lens 201, the first glue blocking portion 10211 and the third glue blocking portion 20211 can simultaneously block the first glue 300, and form a blocking structure similar to "relay", so as to have a better glue blocking effect, and effectively prevent the first glue 300 from contaminating the first lens 101 or the second lens 201; or under the condition that the first barrel 102 and the first lens 101 are connected through the second plastic material 103, the first plastic material 300 and the second plastic material 103 are prevented from contacting with each other, so that the performance and reliability of the first plastic material 300 and the second plastic material 103 are prevented from being affected.

Fig. 3 shows a schematic partial cross-sectional view of an optical lens 1000' of an embodiment of the invention. Referring to fig. 3, the first glue blocking portion 10211 'is a groove, and the third glue blocking portion 20211' is also a groove.

Referring also to fig. 3, the first bottom surface 1021 'has a first glue blocking portion 10211', the first glue blocking portion 10211 'being between the glue area and the optical area of the at least one first lens 101'; the second top surface 2021 'has a third glue-blocking portion 20211', and the third glue-blocking portion 20211 'is between the glue area and the optical area of the at least one second lens 201'. Wherein the first glue blocking portion 10211 'includes a proximal end adjacent to the at least one first lens 101' and a distal end distal to the at least one first lens 101 ', and the third glue blocking portion 20211' includes a proximal end adjacent to the at least one second lens 201 'and a distal end distal to the at least one second lens 201'; and wherein the distal end of the third glue blocking portion 20211 'is located between the proximal and distal ends of the first glue blocking portion 10211'.

In the embodiment shown in fig. 3, the distal end of the third glue blocking portion 20211 'is located between the proximal end and the distal end of the first glue blocking portion 10211', and the first glue blocking portion 10211 'and the third glue blocking portion 20211' are both groove structures, so that the first glue 300 'can be absorbed by the absorption of the groove structure, and a glue blocking structure similar to "relay" is formed, so that during the flowing of the first glue 300' to the first lens 101 'and the second lens 201', the first glue blocking portion 10211 'and the third glue blocking portion 11' can block the first glue 300 'at the same time, and the first glue blocking portion 10211' and the third glue blocking portion 20211 'have a better glue blocking effect, and can effectively prevent the first glue 300' from contaminating the first lens 101 'or the second lens 201'; or under the condition that the first lens barrel 102 ' and the first lens 101 ' are connected through the second adhesive material 103 ', the first adhesive material 300 ' and the second adhesive material 103 ' are prevented from contacting with each other, so that the performance and reliability of the first adhesive material 300 ' and the second adhesive material 103 ' are prevented from being affected.

Referring to fig. 2, the first barrel 102 has a first outer side surface 1023, and a second glue blocking portion 10212 is disposed between the first outer side surface 1023 and the glue painting area, wherein the second glue blocking portion 10212 is disposed on the first bottom surface 1021. In fig. 2, the second glue blocking portion 10212 is in a chamfered structure, and in other embodiments, the second glue blocking portion 10212 is optionally in a groove or boss structure. Although not shown, a fourth glue blocking portion may optionally be provided between the second outer side surface 2023 of the second barrel 202 and the glue area, wherein the fourth glue blocking portion may be a groove or a boss structure. Through setting up the third and hindering gluey portion or the fourth and hindering gluey portion, or set up the third simultaneously and hinder gluey portion and the fourth and hinder gluey portion and can effectively prevent first gluey material 300 to flow to optical lens 1000's lateral surface.

Referring to fig. 2, the first lens 101 has a first structural region 1012, the first structural region 1012 having a top surface of an arcuate configuration, and the first barrel 102 has a first inner bottom surface 1025, the first inner bottom surface 1025 having an arcuate surface that mates with the top surface of the arcuate configuration of the first structural region 1011. The arc-shaped matching structure of the first structure area 1011 of the first lens 101 and the first inner bottom surface 1025 of the first lens barrel 102 can reduce the assembly gap, thereby reducing the generation of stray light and improving the imaging quality of the lens.

Fig. 4A shows a schematic partial cross-sectional view of an optical lens 1000 of an embodiment of the present invention. As shown in fig. 4A, the third glue-blocking portion 20211 is a boss, and the first glue material 300 is in contact with the second outer side surface 2023 of the second barrel 200 and is not in contact with the third glue-blocking portion 20211.

Fig. 4B shows a schematic partial cross-sectional view of an optical lens 1000 according to an embodiment of the present invention. As shown in fig. 4B, the third glue-blocking portion 20211 is a boss, and the first glue material 300 contacts with the second outer side surface 2023 of the second barrel 200 and contacts with the third glue-blocking portion 20211 at the same time.

Fig. 4C shows a schematic partial cross-sectional view of an optical lens 1000' of an embodiment of the present invention. As shown in fig. 4C, the third glue-blocking portion 20211 ' is a groove, and the first glue material 300 ' contacts with the second outer side surface 2023 ' of the second barrel 200 ' and does not contact with the third glue-blocking portion 20211 '.

Fig. 4D shows a schematic partial cross-sectional view of an optical lens 1000' of an embodiment of the present invention. As shown in fig. 4D, the third glue-blocking portion 20211 ' is a groove, and the first glue material 300 ' contacts with the second outer side surface 2023 ' of the second barrel 200 ' and contacts with the third glue-blocking portion 20211 '.

Fig. 4E shows a schematic partial cross-sectional view of an optical lens 1000 according to an embodiment of the invention. As shown in fig. 4E, the third glue-blocking portion 20211 is a boss, and the first glue material 300 does not contact the second outer side surface 2023 of the second barrel 200 and does not contact the third glue-blocking portion 20211 at the same time.

Fig. 4F shows a schematic partial cross-sectional view of an optical lens 1000 according to an embodiment of the present invention. As shown in fig. 4F, the third glue-blocking portion 20211 is a boss, and the first glue material 300 does not contact with the second outer side surface 2023 of the second barrel 200 and simultaneously contacts with the third glue-blocking portion 20211.

Fig. 4G shows a schematic partial cross-sectional view of an optical lens 1000' of an embodiment of the invention. As shown in fig. 4G, the third glue-blocking portion 20211 ' is a groove, and the first glue material 300 ' does not contact with the second outer side surface 2023 ' of the second barrel 200 ' and does not contact with the third glue-blocking portion 20211 '.

Fig. 4H shows a schematic partial cross-sectional view of an optical lens 1000' of an embodiment of the present invention. As shown in fig. 4H, the third glue-blocking portion 20211 ' is a groove, and the first glue material 300 ' does not contact with the second outer side surface 2023 ' of the second barrel 200 ' and simultaneously contacts with the third glue-blocking portion 20211 '.

In another embodiment of the invention, the invention further provides a camera module based on the optical lens. 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.

There is also provided, in accordance with an embodiment of the present invention, a method of assembling an optical lens, the 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 such 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 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. The first lens part 100 and the second lens part 200 are bonded to support and fix the relative positions of the first lens part 100 and the second lens part 200.

The first barrel 102 has a first bottom 1021, the second barrel 202 has a second top 2021, and the first bottom 1021 and/or the second top 2021 have a painting area for disposing the first glue material 300;

and wherein, at least one first lens 101 has an optical area 1011, at least one second lens 201 also has an optical area 2011, the first bottom surface 1021 has a first glue blocking portion 10211, the first glue blocking portion 10211 is between the painting area and the optical area 1011 of at least one first lens 101; and/or the second top surface 2021 has a third glue-blocking portion 20211 thereon, the third glue-blocking portion 20211 is between the glue-painting area and the optical area 2011 of the at least one second lens 201.

In one embodiment, step S30 includes:

s301: arranging a first rubber material 300 in the rubber painting area;

s302: and performing active calibration according to the measured imaging result of the optical system, and determining the relative positions of the first lens component 100 and the second lens component 200.

In one embodiment, the painting area is located on the first bottom surface 1021, and in step S301, the painting area includes:

the first glue material 300 is disposed on the glue area on the first bottom surface 1021.

In one embodiment, the glue area is located on the second top surface 2021, and in step S301, the glue area includes:

the first glue material 300 is arranged on the glue area on the second top surface 2021.

In one embodiment, step S30 includes:

s301': performing active calibration according to the actual measurement imaging result of the optical system, and determining the relative positions of the first lens component and the second lens component;

s302': moving the first lens component 100 or the second lens component 200 away;

s303': arranging a first rubber material 300 in the rubber painting area; and

s304': moving either the first lens component 100 or the second lens component 200 back to the actively calibrated relative position.

In one embodiment, the painting area is located on the first bottom surface 1021, and in step S303', the painting area includes:

In one embodiment, the step S303' of placing the glue area on the second top surface 2021 includes:

the first glue material 300 is arranged on the glue area on the second top surface.

Further, active calibration in the present application may adjust the relative positions of the first lens component 100 and the second lens component 200 in multiple degrees of freedom. The active calibration refers to controlling one lens component to adjust relative to the other lens component to calibrate the whole optical system according to the actually measured resolution of the optical system, so that the axis of each lens component is adjusted consistently, and the actually measured resolution of the optical system reaches the standard. FIG. 5A illustrates a relative position adjustment in active calibration in one embodiment of the invention. In this adjustment manner, the first lens component 100 can move along the x, y, and z directions relative to the second lens component 200 (i.e., the relative position adjustment in this embodiment has three degrees of freedom). Where the z-direction is the direction along the optical axis and the x, y-directions are the directions perpendicular to the optical axis. The x, y directions both lie in a tuning plane P within which translation can be resolved into two components in the x, y directions.

FIG. 5B illustrates rotational adjustment in active calibration according to another embodiment of the present invention. In this embodiment, the relative position adjustment has an increased rotational degree of freedom, i.e., adjustment in the r direction, in addition to the three degrees of freedom of fig. 5A. In the present embodiment, the adjustment in the r direction is a rotation within the adjustment plane P, i.e. a rotation around an axis perpendicular to the adjustment plane P.

Further, fig. 5C shows a relative position adjustment manner with v and w direction adjustments added in the active calibration according to yet another embodiment of the present invention. Where the v direction represents the rotation angle of the xoz plane, the w direction represents the rotation angle of the yoz plane, and the rotation angles of the v direction and the w direction may be combined into a vector angle representing the total tilt state. That is, by the v-direction and w-direction adjustment, the tilt posture of the first lens part 100 with respect to the second lens part 200 (i.e., 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 invention, the relative position adjustment may be performed by adjusting only any one of the six degrees of freedom, or by a combination of any two or more of the six degrees of freedom.

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

Further, in one embodiment, the active calibration further comprises: the angle of the axis of the first lens component 100 relative to the axis of the second lens component 200, i.e. the adjustment in the w, v direction, is adjusted and determined based on the measured resolving power of the optical system. In the assembled optical lens or camera module, the axis of the first lens component 100 and the axis of the second lens component 200 may have an included angle different from zero.

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

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.

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

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

In the above-described embodiments, the optical lens is described as including the first lens part 100 and the second lens part 200 as an example. However, the number of lens components in the optical lens is not particularly limited, i.e., the number of lens components is not limited to two, and may be three or four, etc., depending on the particular design needs.

In the above-described embodiment, as an example, the number of lenses of the first lens part 100 is 1, and the number of lenses of the second lens part 200 is 5. However, the number of lenses in the first lens part 100 and the second lens part 200 is not particularly limited, i.e., the number of lenses of the lens part is not limited to a particular number, the number of lenses of the lens part may be 1 or more, etc., according to specific design needs.

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

Claims

1. An optical lens, comprising:

a first lens component comprising at least one first lens;

a second lens component comprising at least one second optic that together with the at least one first optic forms an imageable optical system; and

a first rubber located in a first gap between the first lens piece and the second lens piece, the first rubber adapted to support and secure the first lens piece and the second lens piece after curing;

the first lens component is provided with a first bottom surface, the second lens component is provided with a second top surface, and the first bottom surface and/or the second top surface are/is provided with a painting area for arranging the first glue material;

2. An optical lens assembly according to claim 1, wherein the first lens part further comprises a first barrel, the at least one first lens being mounted within the first barrel, the second lens part further comprises a second barrel, the at least one second lens being mounted within the second barrel,

wherein the first lens barrel is provided with the first bottom surface, the second lens barrel is provided with the second top surface, the first bottom surface and/or the second top surface are/is provided with the painting area for arranging the first glue material,

3. The optical lens of claim 1, wherein the at least one first lens includes an optical zone and a non-optical zone, wherein the non-optical zone is disposed outside of the optical zone, the second lens component further including a second barrel within which the at least one second lens is mounted,

the non-optical area of the at least one first lens is provided with the first bottom surface, the second lens barrel is provided with the second top surface, and the first bottom surface and/or the second top surface are/is provided with the painting area for arranging the first glue material,

and wherein the at least one second lens also has an optical zone, the first glue blocking portion being between the glue zone and the optical zone of the at least one first lens; and/or the third glue blocking portion is between the glue area and the optical area of the at least one second lens.

4. An optical lens according to claim 2, characterized in that the at least one first lens has an outer side face and the first barrel has a first inner side face;

the outer side surface of the at least one first lens is connected with the first inner side surface of the first lens barrel through a second rubber material.

5. An optical lens according to claim 4, wherein there is more than one first lens, and the outer side surface of the lens close to the first bottom surface of the at least one first lens is connected with the first inner side surface by using the second adhesive material.

6. An optical lens according to claim 2, wherein the first glue-blocking portion is a groove or a boss, and the third glue-blocking portion is a groove or a boss.

7. The optical lens of claim 6, wherein the first glue-blocking portion is a groove, the width of the first glue-blocking portion is 0.01mm-0.3mm, and the depth of the first glue-blocking portion is 0.02mm-0.1 mm.

8. The optical lens of claim 6, wherein the first glue blocking portion is a boss, the width of the first glue blocking portion is 0.01mm-0.3mm, and the height of the first glue blocking portion is 0.02mm-0.1 mm.

9. An optical lens according to claim 6, wherein the third glue-blocking portion is a groove, the width of the third glue-blocking portion is 0.2mm-1mm, and the depth of the third glue-blocking portion is 0.02mm-0.085 mm.

10. The optical lens of claim 6, wherein the third glue blocking portion is a boss, the width of the third glue blocking portion is 0.2mm-1mm, and the height of the third glue blocking portion is 0.02mm-0.085 mm.

11. The optical lens according to claim 2, wherein the cured width of the first adhesive material is 0.15mm to 1mm, and the cured height of the first adhesive material is 0.04mm to 0.1 mm.

12. The optical lens barrel according to claim 2, wherein the first bottom surface has the first glue blocking portion thereon, the first glue blocking portion is between the glue area and the optical area of the at least one first lens, the first glue blocking portion includes a distal end away from the at least one first lens, the first barrel has a first outer side surface, and a distance between the distal end of the first glue blocking portion and the first outer side surface is greater than or equal to 0.35 mm.

13. The optical lens barrel according to claim 2, wherein the second top surface has a third glue blocking portion thereon, the third glue blocking portion is between the painting zone and the optical zone of the at least one second lens, the third glue blocking portion includes a distal end away from the at least one second lens, the second barrel has a second outer side surface, and a distance between the distal end of the third glue blocking portion and the second outer side surface is greater than or equal to 0.45 mm.

14. An optical lens barrel according to claim 2, wherein the first barrel has a first outer side surface, and a second glue blocking portion is provided between the first outer side surface and the glue painting area, the second glue blocking portion being located on the first bottom surface.

15. An optical lens barrel according to claim 2, wherein the second barrel has a second outer side surface, and a fourth glue blocking portion is provided between the second outer side surface and the glue area, and the fourth glue blocking portion is located on the second top surface.

16. An optical lens according to claim 2, wherein the first glue is distributed annularly on the first bottom surface and/or the second top surface.

17. An optical lens according to claim 2, wherein the first glue blocking portions are annularly distributed on the first bottom surface.

18. An optical lens according to claim 2, wherein the third glue blocking portions are annularly distributed on the second top surface.

19. An optical lens barrel according to claim 2, wherein the second barrel has a second outer side surface, and the first glue material is in contact with the second outer side surface of the second barrel and is not in contact with the third glue blocking portion.

20. An optical lens barrel according to claim 2, wherein the second barrel has a second outer side surface, and the first adhesive material is in contact with the second outer side surface of the second barrel and in contact with the third adhesive blocking portion.

21. An optical lens barrel according to claim 2, wherein the second barrel has a second outer side surface, and the first adhesive material is not in contact with the second outer side surface of the second barrel and is not in contact with the third adhesive blocking portion.

22. An optical lens according to claim 2, wherein the first bottom surface has the first resist portion thereon between the painting zone and the optical zone of the at least one first lens; the second top surface is provided with the third glue resisting part, and the third glue resisting part is arranged between the glue painting area and the optical area of the at least one second lens;

23. An optical lens barrel according to claim 2 and any one of claims 4 to 22, wherein the at least one first lens has a first structure area having a top surface of an arc structure, the first barrel has a first inner bottom surface having an arc surface cooperating with the top surface of the arc structure of the first structure area.

24. A camera module comprising the optical lens of any one of claims 1-23.

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

preparing a first lens part and a second lens part separated from each other;

26. The method of assembling of claim 25, wherein the first lens part comprises a first barrel and at least one first lens mounted within the first barrel, and the second lens part comprises a second barrel and at least one second lens mounted within the second barrel, and wherein the step of preparing the first and second lens parts separate from each other comprises:

and connecting the first lens barrel and the at least one first lens through a second adhesive material.

27. The method of assembling of claim 25, wherein the second lens component comprises a second barrel and at least one second lens mounted within the second barrel, and wherein the step of preparing the first and second lens components separately from each other comprises:

assembling the second barrel and the at least one second lens.

28. The method of assembling of claim 25, wherein the first lens component comprises at least one first lens and the second lens component comprises at least one second lens, and wherein the step of combining the first lens component and the second lens component into a complete optical system comprises:

pre-positioning the first lens part and the second lens part to enable the at least one first lens and the at least one second lens to jointly form an imaging optical system; and

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

29. The method of assembly of claim 28, wherein the first lens component includes a first barrel having a first bottom surface and at least one first lens mounted within the first barrel, the second lens component includes a second barrel having a second top surface and at least one second lens mounted within the second barrel,

wherein the first bottom surface and/or the second top surface is provided with a painting area for arranging the first glue material,

and wherein the at least one first lens has an optical zone and the at least one second lens also has an optical zone, the first base surface having a first block portion thereon, the first block portion being between the painting zone and the optical zone of the at least one first lens; and/or the second top surface is provided with a third glue resisting part, and the third glue resisting part is arranged between the glue area and the optical area of the at least one second lens.

30. The method of assembling of claim 29, wherein determining the relative position of the first lens component and the second lens component in the step of performing an active calibration based on measured imaging of the optical system comprises:

arranging the first glue material in the glue painting area; and

31. The method of assembling of claim 30, wherein said painted area is located on said first bottom surface;

and arranging the first glue material on the glue painting area on the first bottom surface.

32. The method of assembling of claim 30, wherein said painted area is on said second top surface;

33. The method of assembling of claim 29, wherein determining the relative position of the first lens component and the second lens component in the step of performing an active calibration based on measured imaging of the optical system comprises:

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;

moving the first lens piece or the second lens piece away;

arranging the first glue material in the glue painting area; and

moving the first lens component or the second lens component back to the actively calibrated relative position.

34. The method of assembling of claim 33 wherein said painted area is on said first bottom surface;

35. The method of assembling of claim 33 wherein said painted area is on said second top surface;

wherein, in the step of arranging the first glue material in the glue painting area, the method comprises the following steps: