CN208432778U - Optical lens and camera module - Google Patents
Optical lens and camera module Download PDFInfo
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- CN208432778U CN208432778U CN201820813850.7U CN201820813850U CN208432778U CN 208432778 U CN208432778 U CN 208432778U CN 201820813850 U CN201820813850 U CN 201820813850U CN 208432778 U CN208432778 U CN 208432778U
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Abstract
The utility model provides a kind of optical lens, comprising: the first lens assembly comprising the first lens barrel and at least one first eyeglass, first eyeglass include the first optics area and first structure area, and being located at bottom in the first eyeglass is the first eyeglass of bottom；Second lens assembly, it includes the second lens barrel and at least one second eyeglass, at least one described first eyeglass and at least one described second eyeglass collectively form imageable optical system, and the bottom surface in the first structure area of the first eyeglass of the bottom is lower than the top surface of second lens barrel；And connection glue material, between first lens assembly and second lens assembly, and it is suitable for supporting first lens assembly and second lens assembly and fixed relative position between the two.The utility model additionally provides corresponding camera module and assemble method.The utility model can reduce the optics overall length of camera module, and then reduce the height of camera module；Image quality can be promoted.
Description
Technical field
The utility model relates to optical image technology fields, specifically, the utility model relates to optical lens and camera shootings
Mould group.
Background technique
With popularizing for mobile electronic device, the user that is used to help for being applied to mobile electronic device obtains image
The relevant technologies of the camera module of (such as video or image) have obtained swift and violent development and progress, and in recent years, take the photograph
As mould group is all widely used in many fields such as medical treatment, security protection, industrial production.
In order to meet the more and more extensive market demand, high pixel, small size, large aperture are that existing camera module is irreversible
The development trend turned.However, to realize that high pixel, small size, the demand of three aspects of large aperture are that have in same camera shooting molding
Great difficulty.For example, the increase of the compact development and Mobile phone screen accounting of mobile phone, allows interior of mobile phone to can be used in preposition camera shooting
The space of mould group is smaller and smaller, and market has also been proposed higher and higher demand to the image quality of camera module.
In compact camera module (such as camera module for mobile phone) field, generally require in view of optical imaging lens
The quality and the foozle during module packaging of head.Specifically, in the manufacturing process of optical imaging lens, mirror is influenced
Head resolving power factor is matched from the assembly of each element and its error of assembly, the error, each eyeglass of eyeglass spacer element thickness
The error of conjunction and the variation of lens materials refractive index etc..Wherein, each element and its error of assembly include each lens monomer
Eccentric between optics face thickness, lens optical face rise, optical surface face type, radius of curvature, eyeglass single side and face, lens optical face is inclined
The size of oblique equal error, these errors depends on mould and die accuracy and formed precision control ability.The mistake of eyeglass spacer element thickness
Difference depends on the machining accuracy of element.The error of the assembly cooperation of each eyeglass depends on the dimensional tolerance and mirror that are assembled element
The assembly precision of head.The introduced error of variation of lens materials refractive index then depend on material stability and batch it is consistent
Property.There is the phenomenon that accumulation deteriorates in the error of above-mentioned each elements affect resolving power, this cumulative errors can be with lens numbers
Increase and constantly increase.Existing resolving power solution is to carry out tolerance for the size of the element high to each relative sensitivity
Control, eyeglass revolution compensate raising resolving power, but since the camera lens of high pixel large aperture is more sensitive, it is desirable that tolerance is tight
Severe, such as: part sensitivity camera lens 1um eccentricity of glasses lens can bring 9 ' image planes to tilt, and cause machining eyeglass and assembling difficulty increasing,
Simultaneously because feedback cycle is long in an assembling process, cause that the Measure of Process Capability (CPK) of lens assembling is low, fluctuation is big, causes
Fraction defective is high.And as described above, it is present in multiple element, each factor because the factor for influencing camera lens resolving power very more
Control all there is the limit of the accuracy of manufacture, if only promoting the precision of each element merely, hoisting power is limited, promoted at
This is high, and is not able to satisfy the increasing image quality demand in market.
Present applicant has proposed a kind of based on active calibration technique adjustment and determines the relative position of upper and lower sub- camera lens, so
Upper and lower sub- camera lens is bonded together according to identified relative position afterwards, and then produces complete optical lens or camera shooting
The assemble method of mould group.The process capability of optical lens or camera module that this solution is able to ascend mass production refers to
Number (CPK)；It enables to each of material (such as sub- camera lens or photosensory assembly for assembling optical lens or camera module)
The precision of a element and its requirement of assembly precision become loose, so reduce optical imaging lens and camera module integral into
This；The various aberrations of camera module can be adjusted in an assembling process in real time, reduce fraction defective, reduce production cost,
Promote image quality.
However, being generally required between the bottom surface of upper sub- camera lens and the top surface of lower sub- camera lens to give active calibration leaving space
Certain gap is left in design, this gap causes the height of the camera lens based on active calibration technique (to refer to along optical axis side
Upward size) commonly greater than monomer-type camera lens (camera lens for referring to only single lens barrel).The height of camera lens or camera module is excessive
Often restrict one of an important factor for terminal device (such as mobile phone) size reduces (such as reducing mobile phone thickness).
On the other hand, carrying out active calibration to the optical system of camera lens itself is a kind of new production technology, practical volume production
Need to consider the factors such as reliability, crash resistance, weatherability and the cost of manufacture of optical lens and camera module, sometimes also
It needs yield to decline caused by survey factor in face of various.For example, in a kind of process program, in the first lens assembly and
Glue material is filled between second lens assembly, so that the first lens assembly and the second lens assembly are maintained at determined by active calibration
Relative position.However practical test manufacture discovery, optical lens are compared the active calibration stage with the image quality of camera module and are obtained
Image quality usually deteriorate, it is this deterioration sometimes exceed tolerance, cause product bad.Applicant studies hair
It is existing, after introducing active calibration technique in the assembling of optical lens or camera module, glue material, lens barrel or eyeglass variation and its
Its X factor may be the reason of leading to the above problem.Currently there is an urgent need to which the solution of the above problem can be overcome,
To promote product yield.
Utility model content
The utility model is intended to provide a kind of solution of at least one defect that can overcome the prior art.
One aspect according to the present utility model provides a kind of optical lens, comprising: the first lens assembly comprising
First lens barrel and at least one first eyeglass for being installed on first lens barrel, first eyeglass includes first for imaging
First structure area other than optics area and first optics area, and have at least one described first eyeglass positioned at most lower
One the first eyeglass of bottom of side；
Second lens assembly comprising the second lens barrel and at least one second eyeglass for being installed on second lens barrel, institute
It states at least one first eyeglass and at least one described second eyeglass collectively forms imageable optical system, and the bottom
The bottom surface in the first structure area of the first eyeglass is lower than the top surface of second lens barrel；And connection glue material, it is located at described first
Between lens assembly and second lens assembly, and it is suitable for supporting first lens assembly and second lens assembly
And fixed relative position between the two.
In one embodiment, the connection glue material is suitable for supporting and fixing first lens assembly and second mirror
Head part, so that the two is maintained at relative position determined by active calibration, and the axis of first lens assembly and institute
Stating has the angle being not zero between the axis of the second lens assembly, wherein the active calibration is according to the optical system
Actual imaging result and the relative position done to first lens assembly and second lens assembly adjusts.
In one embodiment, the connection glue material includes the first glue material, is located at bottom surface and the institute of first lens barrel
Between the top surface for stating the second lens barrel.
In one embodiment, second eyeglass include for imaging the second optics area and second optics area with
The second outer structural area has second eyeglass of top positioned at the top at least one described second eyeglass；And institute
Stating connection glue material further includes the second glue material, between the first bottom surface and the second top surface, wherein first bottom surface is described
The bottom surface in the first structure area of the first eyeglass of bottom, second top surface are the tops of the second structural area of second eyeglass of top
Face.
In one embodiment, first glue material is suitable for temporary support and fixed first camera lens part after precuring
The relative position and second glue material of part and second lens assembly are suitable for described in permanent support after hardening and fixation
The relative position of first lens assembly and second lens assembly.
In one embodiment, first glue material is light binding and second glue material is hot-setting adhesive.
In one embodiment, first glue material and second glue material are UV hot-setting adhesive.
In one embodiment, first bottom surface and second top surface are flat surface.
In one embodiment, the inside of second lens barrel has step-like breasting face, and second top surface
At least part bears against the step-like breasting face.
In one embodiment, second glue material contacts second lens barrel.
In one embodiment, there is second mirror of top positioned at the top at least one described second eyeglass
Piece, wherein at least one of incidence surface of the second eyeglass of the light-emitting surface of the first eyeglass of the bottom and the top is not convex
Face.
In one embodiment, second glue material does not contact second lens barrel.
In one embodiment, the second structural area of second eyeglass of top includes bearing against area and bond regions, wherein institute
It states the side for bearing against area and top surface and bears against the step-like breasting face, and second glue material is arranged in the bond regions.
In one embodiment, second top surface has excessive glue groove, and the excessive glue groove is located at leaning on for second top surface
The one end in nearly second optics area, second glue material are black.
In one embodiment, first lens assembly is located at the optical lens front end, and second camera lens part
Part is located at the optical lens rear end.
Another aspect according to the present utility model additionally provides a kind of camera module comprising any of the above-described optical lens.
Another aspect according to the present utility model, additionally provides a kind of optical lens, and assemble method includes: preparation first
Lens assembly and the second lens assembly, wherein first lens assembly includes the first lens barrel and is installed on first lens barrel
At least one first eyeglass, first eyeglass include other than the first optics area and first optics area for imaging
One structural area, and there is first eyeglass of bottom positioned at bottom at least one described first eyeglass, described second
Lens assembly includes the second lens barrel and at least one second eyeglass for being installed on second lens barrel；To first lens assembly
It is pre-positioned with second lens assembly, so that at least one described first eyeglass and at least one described second eyeglass are total
With the imageable optical system of composition, and the bottom surface in the first structure area of first eyeglass of bottom is made to be lower than second lens barrel
Top surface；Based on the actual measurement imaging results of the optical system to the phase of first lens assembly and second lens assembly
Active calibration is carried out to position；And first lens assembly and second lens assembly are bonded with connection glue material, so that
First lens assembly and second lens assembly are maintained at relative position determined by active calibration.
In one embodiment, the step of glue material bonding with connection includes: in the top surface of second lens assembly
Arrange the connection glue material；First lens assembly and second lens assembly are moved to phase determined by active calibration
To position；And solidify the connection glue material.
In one embodiment, the step of first carrying out the active calibration, then execute the step of arranging the connection glue material.
In one embodiment, the step of arranging the connection glue material, then the step of executing the active calibration are first carried out.
In one embodiment, it is described with connection glue material bonding the step of in, the connection glue material include the first glue material with
Second glue material arranges that described the step of connecting glue material includes: to arrange the first glue material in the top surface of the second lens barrel, and push up second
The second glue material is arranged in face, wherein second top surface is the top surface of the second structural area of the second eyeglass of top, the top second
Eyeglass is second eyeglass for being located at the top at least one described second eyeglass, and second structural area is the second eyeglass
The optics area for optical imagery other than region.
In one embodiment, in the step of glue material bonding with connection, first glue material is located at first mirror
Between the bottom surface of cylinder and the top surface of second lens barrel, and second glue material is located at second top surface and first bottom
Between face, wherein first bottom surface is the bottom surface in the first structure area of first eyeglass of bottom.
In one embodiment, described the step of solidifying the connection glue material includes: by the first glue material precuring
Make the relative position of its temporary support and fixed first lens assembly and second lens assembly；And by described second
The permanent cured relative position for making its permanent support and fixed first lens assembly and second lens assembly of glue material.
In one embodiment, the precuring includes being exposed processing to the first glue material.
In one embodiment, it is described it is permanent cured include to first lens assembly and described second after precuring
The baking of lens assembly is handled.
In one embodiment, in the preparation process, the inside of second lens barrel has step-like breasting face, and
At least part of second top surface bears against the step-like breasting face.
In one embodiment, the step of active calibration include: make first bottom surface and second top surface it
Between along optical axis direction spacing be less than 80um within the scope of carry out active calibration.
Compared with prior art, the utility model has at least one following technical effect:
1, the utility model can reduce the optics overall length (TTL) of camera module, and then reduce the height of camera module.
2, the split type assembling optical lens based on active calibration of the utility model can be with improving optical camera lens and camera shooting
The image quality of mould group, particularly suitable for compact camera module (such as mobile phone camera module).
3, in some embodiments of the utility model, the technology difficulty of the first eyeglass and the second lens forming is lower, has
Help save cost, improves production efficiency.
4, in some embodiments of the utility model, the manufacture craft of the second lens assembly is mature, can reduce the second mirror
The assembling tolerance of cylinder and the second eyeglass, and then image quality is promoted, promote yield.
5, some embodiments of the utility model can inhibit the secondary of the split type assembling optical lens based on active calibration
The deterioration of image quality caused by variation.
6, some embodiments of the utility model can inhibit or prevent excessive glue pollution optical system, so that it is good to improve product
Rate.
Detailed description of the invention
Exemplary embodiment is shown in reference attached drawing.Embodiment and attached drawing disclosed herein should be considered illustrative
, and not restrictive.
Fig. 1 shows the vertical section schematic diagram of the optical lens 1000 in a comparative example；
Fig. 2 shows the vertical section schematic diagrams of the optical lens of the utility model one embodiment；
Fig. 3 A shows the vertical section schematic diagram of another embodiment of the utility model；
Fig. 3 B shows the first eyeglass of top 101 in Fig. 3 A illustrated embodiment；
Fig. 4 A shows the vertical section schematic diagram of the optical lens of the utility model another embodiment；
Fig. 4 B shows the first eyeglass of top 101 in Fig. 4 A illustrated embodiment；
Fig. 5 A shows the vertical section schematic diagram of the optical lens of the utility model further embodiment；
Fig. 5 B shows the first eyeglass of top 101 in Fig. 5 A illustrated embodiment；
Fig. 6 A~D shows the optical lens assembling process of the utility model one embodiment；
Fig. 7 A shows relative position regulative mode in the active calibration in the utility model one embodiment；
Fig. 7 B shows the adjusting of the rotation in the active calibration of another embodiment of the utility model；
Fig. 7 C shows in the active calibration of another embodiment of the utility model and increases the opposite of the direction v, w adjusting
Position regulative mode；
Fig. 8 shows the auto-focusing mould group in the utility model one embodiment；
Fig. 9 shows the optical lens in the utility model one embodiment.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in the present specification, the first, second equal statement is only used for a feature and another feature differentiation
It comes, without indicating any restrictions to feature.Therefore, discussed below without departing substantially from teachings of the present application
First main body is also known as the second main body.
In the accompanying drawings, for ease of description, thickness, the size and shape of object are slightly exaggerated.Attached drawing is merely illustrative
And it is and non-critical drawn to scale.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
In bright book use when indicate exist stated feature, entirety, step, operations, elements, and/or components, but do not exclude the presence of or
It is attached with one or more of the other feature, entirety, step, operation, component, assembly unit and/or their combination.In addition, ought be such as
When the statement of at least one of " ... " appears in after the list of listed feature, entire listed feature is modified, rather than is modified
Individual component in list.In addition, when describing presently filed embodiment, use " can with " indicate " one of the application or
Multiple embodiments ".Also, term " illustrative " is intended to refer to example or illustration.
As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and
Be not used as the term of table degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or calculated value
In inherent variability.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with
The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and
It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 2 shows the vertical section schematic diagrams of the optical lens of the utility model one embodiment.This paper central fore-and-aft vertical plane refers to
By the section of optical axis, hereinafter repeat no more.With reference to Fig. 2, the optical lens of the present embodiment include: the first lens assembly 100,
Second lens assembly 200 and connection glue material.Wherein, the first lens assembly 100 includes the first lens barrel 102 and is installed on described first
One the first eyeglass 101 of lens barrel 102, first eyeglass 101 include the first optics area 1011 and described for imaging
First structure area 1012 other than one optics area 1011.Second lens assembly 200 includes the second lens barrel 202 and is installed on described the
Four the second eyeglasses 201 of two lens barrels 202, first eyeglass 101 and four the second eyeglasses 201 collectively form imageable light
System, and the bottom surface in the first structure area 1012 of first eyeglass 101 is lower than the top surface of second lens barrel 202.Example
The medial surface height (referring to the size on optical axis direction) of first lens barrel 102 can be such as designed to the thickness less than first structure area
(referring to the size on optical axis direction), in this way after the first eyeglass is embedded in the first lens barrel, a part of the lateral surface of the first eyeglass 101
It is exposed to other than the medial surface of the first lens barrel 102, and is exposed to outer part and sinks down into the light hole of the second lens barrel 202,
To realize that the bottom surface in the first structure area 1012 of the first eyeglass 101 is lower than the top surface of second lens barrel 202.Further,
Glue material is connected between first lens assembly 100 and second lens assembly 200, and is suitable for support described first
Lens assembly 100 and second lens assembly 200 and fixed relative position between the two.In the present embodiment, the connection
Glue material is suitable for supporting and fixing first lens assembly 100 and second lens assembly 200, so that the two is maintained at actively
Relative position determined by calibrating, and the axis of the axis of first lens assembly 100 and second lens assembly 200
Between can have the angle being not zero, wherein the active calibration is the actual imaging result according to the optical system and right
The relative position adjustment that first lens assembly 100 and second lens assembly 200 are done.It hereinafter, can also be in conjunction with real
Example is applied to be further described through active calibration.In the present embodiment, the connection glue material includes the first glue material 301, is located at institute
It states between the bottom surface of the first lens barrel 102 and the top surface of second lens barrel 202.
It may be noted that in another embodiment, the number of the first eyeglass 101 may be multiple.At this point, multiple first eyeglasses
It is located at the first eyeglass of bottom 101 of bottom in 101 with one.And the first structure area of first eyeglass of bottom 101
1012 bottom surface is lower than the top surface of second lens barrel 202.In addition, it is readily appreciated that, (the example when the first eyeglass 101 only has one
As shown in Figure 2), then first eyeglass 101 can be considered as first eyeglass of bottom 101.
In above-described embodiment, the bottom surface in the first structure area 1012 of the first eyeglass of bottom 101 is lower than second lens barrel 202
Top surface, 101 position of the first eyeglass of the camera lens (being properly termed as AOA camera lens) based on active calibration technology can be made to sink,
Reduce the optics overall length (TTL) of camera module, and then reduces the height of camera module.
To make above-mentioned technical effect it is more readily appreciated that the comparative example below with reference to Fig. 1 is illustrated.Fig. 1 shows one
The vertical section schematic diagram of optical lens 1000 in comparative example.The optical lens 1000 includes the first lens assembly 100, the second mirror
Head part 200 and connection glue material.First lens assembly 100 includes the first eyeglass 101 and the first lens barrel 102, the second lens assembly
200 include the second lens barrel 202 and multiple second eyeglasses 201.With the breasting face of multi-stage stairs shape on the inside of second lens barrel 202
2022, the multiple second eyeglass 201 is sequentially embedded the breasting face 2022 of the multi-stage stairs shape from small to large.It is designing
On, the design size of the second eyeglass 201 of top is usually smaller, and the top area 2021 of the second lens barrel is often between the first mirror
Between piece 101 and the second eyeglass 201, along with gap needed for needing reserved active calibration, therefore the first eyeglass in design
The gap as needed for reserved active calibration the distance between 101 structural area bottom surface and the structural area top surface of the second eyeglass 201 D
And the thickness of the top area 2021 of the second lens barrel 202 between the first eyeglass 101 and the second eyeglass 201 determines.In light
The design phase is learned, the face type of each eyeglass just must take into account above-mentioned distance D, in this way so that active calibration has required activity
Space.And in the utility model, by making the bottom surface in first structure area 1012 of the first eyeglass of bottom 101 be lower than second mirror
The top surface of cylinder 202 can make the optical design stage without the concern for the thickness of the top area 2021 of the second lens barrel 202, this
Sample can make 101 position of the first eyeglass of AOA camera lens sink in the design of face type, to reduce the optics overall length of camera module
(TTL), so reduce camera module height.
Further, Fig. 3 A shows the vertical section schematic diagram of another embodiment of the utility model.Fig. 3 B shows figure
The first eyeglass of top 101 in 3A illustrated embodiment.With reference to Fig. 3 A and Fig. 3 B, in the present embodiment, second eyeglass 201 includes
For the second structural area other than the second optics area 2011 and second optics area 2011 of imaging, the multiple second eyeglass
There is second eyeglass 201 of top positioned at the top in 201.The connection glue material includes the first glue material 301 and the second glue
Material 302.First glue material 301 is located between the bottom surface of first lens barrel 102 and the top surface of second lens barrel 202.Second glue
Material 302 is between the first bottom surface 1013 and the second top surface 2013, wherein first bottom surface 1013 is first mirror of bottom
The bottom surface in the first structure area 1012 of piece 101, second top surface 2013 are the second structural areas of second eyeglass of top 201
2012 top surface.First glue material 301 is suitable for temporary support and fixed first lens assembly 100 and institute after precuring
State the relative position of the second lens assembly 200.Second glue material 301 is suitable for permanent support after hardening and fixed described first
The relative position of lens assembly 100 and second lens assembly 200.In the present embodiment, first glue material 301 can be light
Solid glue and second glue material 302 can be hot-setting adhesive.In another embodiment, first glue material 301 and described second
Glue material 302 can be UV hot-setting adhesive.In the present embodiment, the second glue material 302 be located at the first eyeglass 101 and the second eyeglass 201 it
Between, guarantee the opposite position determined by active calibration to fix and support the first lens assembly 100 and the second lens assembly 200
It sets, can inhibit second mutation (such as can inhibit secondary caused by being combined shakiness with the first eyeglass 101 because of the first lens barrel 102
Variation) caused by image quality deterioration.Also, in the present embodiment, the structural area of the first eyeglass 101 and the second eyeglass 201
Surface is burnishing surface.First eyeglass 101 and the technology difficulty of the second eyeglass 201 forming are lower, help to save cost, improve
Production efficiency.
Further, in one embodiment, first bottom surface 1013 and second top surface 2013 are flat surface.
The inside of second lens barrel 202 has step-like breasting face 2022, and at least part of second top surface 2013 is held
It is against the step-like breasting face 2022.In the present embodiment, the manufacture craft of the second lens assembly 200 is mature, can reduce by second
The assembling tolerance of lens barrel 202 and the second eyeglass 201, and then image quality is promoted, promote yield.
In one embodiment, second glue material 302 contacts second lens barrel 202.Second glue material 302 can be with
For black.Second glue material 302 of black helps to block stray light and enters optical system from the second structural area 2012.
In another embodiment, second glue material 302 does not contact second lens barrel 202.In the present embodiment, first
Eyeglass 101 and the second eyeglass 201 are directly fixed and supported by the second glue material 302, can inhibit image quality caused by second mutation
Deterioration.It, can be with for example, the second mutation caused by being combined shakiness with the first eyeglass 101 because of the first lens barrel 102 can be inhibited
It prevents from leading to the position of the first eyeglass 101 because lens barrel makes a variation (such as morphing after the first, second lens barrel is heated or dampness)
Or face type morphs.
Fig. 4 A shows the vertical section schematic diagram of the optical lens of the utility model another embodiment.Fig. 4 B shows figure
The first eyeglass of top 101 in 4A illustrated embodiment.With reference to Fig. 4 A and Fig. 4 B, in the present embodiment, second eyeglass of top 201
The second structural area 2012 include bearing against area 2014 and bond regions 2015, wherein the side for bearing against area and top surface bear against institute
Step-like breasting face 2022 is stated, and second glue material 302 is arranged in the bond regions.
Further, Fig. 5 A shows the vertical section schematic diagram of the optical lens of the utility model further embodiment.Figure
5B shows the first eyeglass of top 101 in Fig. 5 A illustrated embodiment.With reference to Fig. 5 A and Fig. 5 B, in the present embodiment, described second
Top surface 2013 can have excessive glue groove 2019, and the excessive glue groove 2019 is located at close second light of second top surface 2013
One end of school district 2011, second glue material 302 can be black.The present embodiment can prevent the second glue material 302 from polluting optics
Area avoids captured image from occurring bad caused by stain, to improve the yield of optical lens or camera module production.
Further, in one embodiment, first lens assembly 100 is located at the optical lens front end, and institute
It states the second lens assembly 200 and is located at the optical lens rear end.
Further, in one embodiment, it is located at a bottom of lowermost end in first eyeglass with one
First eyeglass has second eyeglass of top positioned at the top in second eyeglass.Wherein first mirror of bottom
At least one of incidence surface of the second eyeglass of the light-emitting surface of piece and the top is not convex surface.That is going out when the first eyeglass of bottom
When smooth surface is convex surface, the incidence surface of the second eyeglass of top is concave surface or plane；When the incidence surface of the second eyeglass of top is convex surface
When, the light-emitting surface of the first eyeglass of bottom is concave surface or plane.The above design is in order to avoid the light-emitting surface of the first eyeglass of bottom
Incidence surface with the second eyeglass of top is simultaneously convex surface, and first bottom surface 1013 is caused to be difficult to sink down into the light passing of the second lens barrel
In hole.It may be noted that the incidence surface of the second eyeglass of light-emitting surface and the top of first eyeglass of bottom can also be concave surface,
Perhaps be plane or one be plane another be concave surface, these designs can be in order to making first bottom surface 1013
It sinks down into the light hole of the second lens barrel.Fig. 9 shows the optical lens in the utility model one embodiment.As shown in figure 9,
The light-emitting surface of its first eyeglass of bottom is concave surface, and the incidence surface of the second eyeglass of top is convex surface.In addition, showing bonding in the figure
The adhesive glue 1019 of first eyeglass and the first lens barrel.
In addition, it may be noted that the first bottom surface (bottom surface in the first structure area of the first eyeglass of bottom) described herein is lower than
The top surface of second lens barrel refers to that the first bottom surface is integrally lower than the top surface of second lens barrel.
Further, in some embodiments of the utility model, camera module is additionally provided.The camera module can wrap
Include the optical lens in hereinbefore any one embodiment.Camera module may include optical lens and photosensory assembly.Optical frames
Head is mounted and fixed to photosensory assembly.Wherein, there is sensitive chip in photosensory assembly.Camera module can be fixed-focus mould group,
It can be the other types of mould group such as auto-focusing mould group.Fig. 8 shows the auto-focusing in the utility model one embodiment
Mould group, wherein the second lens assembly further includes motor 209 (or other optical actuator).Second lens barrel 202 is installed in motor
On the inside of carrier, the pedestal of motor is installed on the top surface of the microscope base 409 of photosensory assembly.
Further, one embodiment according to the present utility model additionally provides a kind of optical lens assemble method, including
Step S10 to S40.
Step S10 prepares the first lens assembly 100 and the second lens assembly 200, wherein first lens assembly 100
Including the first lens barrel 102 and it is installed at least one first eyeglass 101 of first lens barrel 102, first eyeglass 101 wraps
Include the first structure area 1012 other than the first optics area 1011 and first optics area 1011 for imaging, and it is described extremely
There is first eyeglass of bottom 101 positioned at bottom, second lens assembly 200 wraps in few first eyeglass 101
It includes the second lens barrel 202 and is installed at least one second eyeglass 201 of second lens barrel 202.Second lens barrel 202 it is interior
Side can have step-like breasting face 2022, and at least part of second top surface 2013 bears against described step-like hold
By face 2022.
Step S20 is pre-positioned first lens assembly 100 and second lens assembly 200, so that described
At least one first eyeglass 101 and at least one described second eyeglass 201 collectively form imageable optical system, and make described
The bottom surface in the first structure area 1012 of the first eyeglass of bottom 101 is lower than the top surface of second lens barrel 202.
Step S30, based on the actual measurement imaging results of the optical system to first lens assembly 100 and described second
The relative position of lens assembly 200 carries out active calibration.
Step S40 bonds first lens assembly 100 and second lens assembly 200 with connection glue material, so that institute
It states the first lens assembly 100 and is maintained at relative position determined by active calibration with second lens assembly 200.
Further, in one embodiment, step S40 includes: to arrange institute in the top surface of second lens assembly 200
State connection glue material；First lens assembly 100 and second lens assembly 200 are moved to phase determined by active calibration
To position；And solidify the connection glue material.The step of active calibration can be first carried out, then execute the arrangement connection
The step of glue material.The step of arranging the connection glue material, then the step of executing the active calibration can also be first carried out.
Further, in one embodiment, in step S40, make the connection glue material solidify the step of include: will be described
First glue material, 301 precuring makes its temporary support and fixed first lens assembly 100 and second lens assembly 200
Relative position；And make its permanent support and fixed first lens assembly 100 and institute for second glue material is permanent cured
State the relative position of the second lens assembly 200.Wherein the precuring may include being exposed processing to the first glue material 301.
It is described it is permanent cured may include baking to first lens assembly 100 and second lens assembly 200 after precuring
Roasting processing.
Fig. 6 A~D shows the optical lens assembling process of the utility model one embodiment.Fig. 6 A shows practical
The schematic diagram of picture glue is carried out in novel one embodiment.With reference to Fig. 6 A, the first lens assembly 100 and the second camera lens are first made respectively
Then component 200 draws glue in the top surface of the second lens assembly 200.In the present embodiment, the connection glue material includes the first glue material
301 and second glue material 305, first glue material 301 be located at first lens barrel 102 bottom surface and second lens barrel 202
Between top surface, and second glue material 301 is between second top surface 2013 and first bottom surface 1013, wherein institute
State the bottom surface that the first bottom surface 1013 is the first structure area 1012 of first eyeglass of bottom 101.In step s 40, institute is arranged
The step of stating connection glue material includes: to arrange the first glue material 301 in the top surface of the second lens barrel 202, and in 2013 cloth of the second top surface
The second glue material 302 is set, wherein second top surface 2013 is the top surface of the second structural area 2012 of the second eyeglass 201 of top, institute
Stating the second eyeglass 201 of top is second eyeglass 201 for being located at the top at least one described second eyeglass 201, described
Second structural area 2012 is the region other than the optics area for optical imagery of the second eyeglass 201.Fig. 6 B shows practical
The first lens assembly 100 and the second lens assembly 200 are arranged into determined by active calibration relatively in novel one embodiment
The schematic diagram of position.Wherein, corresponding coordinate can be completed before drawing glue and be recorded to active calibration, according to institute after drawing glue
The coordinate recorded arranges the first lens assembly 100 and the second lens assembly 200 so that the two is restored determined by active calibration
Relative position.Active calibration can also carry out after drawing glue, specifically can be pre-positioned (step S20) after drawing glue
With active calibration (step S30), image quality the first lens assembly 100 and the second mirror up to standard are determined according to actual measurement resolving power
The relative position of head part 200.Fig. 6 C shows the schematic diagram of the precuring in the utility model one embodiment.The present embodiment
In, precuring is completed by exposure-processed, and wherein arrow schematically provides direction of illumination.It may be noted that leading in procuring process
It crosses external intake mechanism (such as clamping device) and the first lens assembly 100 and the second lens assembly 200 is maintained into active school
Relative position determined by standard.After the completion of precuring, it can be tieed up by fixing and supporting for the first glue material 301 after precuring
Hold the relative position determined by active calibration.Fig. 6 D shows the permanent cured signal in the utility model one embodiment
Figure.In the present embodiment, the solidification of the second glue material 302 can be realized by carrying out whole baking to the semi-finished product after precuring.
Second glue material 302 can be hot-setting adhesive or UV hot-setting adhesive.Since thermosetting can have stronger adhesive effect, may be implemented
It is permanent cured, i.e., the first lens assembly 100 and the second lens assembly 200 are permanently combined.And this combination has reliability
The many advantages such as height, good weatherability.
Further, in one embodiment, in step S30, the step of active calibration includes: to make first bottom
Active calibration is carried out in the range of being less than 80um along the spacing of optical axis direction between face 1013 and second top surface 2013.
Since the first eyeglass is designed using sunk type, the first eyeglass of bottom and top second can reduce in the optical design stage
Design gaps between eyeglass (refer between the design between the structural area of the second eyeglass of structural area and top of the first eyeglass of bottom
Gap).
Further, one embodiment according to the present utility model additionally provides a kind of camera module production method, packet
It includes: making optical lens using the optical lens production method in previous embodiment；And the optical lens is installed on sense
Optical assembly obtains the camera module.It may be noted that optical lens can be first made in the present embodiment, then again by optical lens
It is installed on photosensory assembly；Be also possible to optical lens assembling (such as bonding of the first lens assembly and the second lens assembly) and
The assembling (such as bonding of the second lens assembly and photosensory assembly) of optical lens and photosensory assembly synchronously completes.
Further, active calibration described herein can be in multiple degrees of freedom to 100 He of the first lens assembly
The relative position of second lens assembly 200 is adjusted.Fig. 7 A shows the active calibration in the utility model one embodiment
Middle relative position regulative mode.In the regulative mode, first lens assembly 100 (being also possible to the first eyeglass 101) can
To move relative to second lens assembly 200 along x, y, z direction, (the relative position adjustment i.e. in the embodiment has three
A freedom degree).Wherein the direction z is the direction along optical axis, and x, the direction y is the direction perpendicular to optical axis.X, the direction y is in one
In a adjustment plane P, two components that can be analyzed to the direction x, y are translated in adjustment plane P.
Fig. 7 B shows the adjusting of the rotation in the active calibration of another embodiment of the utility model.In this embodiment,
Relative position adjusts other than the three degree of freedom with Fig. 7 A, also adds rotary freedom, the i.e. adjusting in the direction r.This reality
It applies in example, the adjusting in the direction r is the rotation in the adjustment plane P, i.e., around the axis perpendicular to the adjustment plane P
Rotation.
Further, Fig. 7 C shows in the active calibration of another embodiment of the utility model and increases the direction v, w
The relative position regulative mode of adjusting.Wherein, the direction v represents the rotation angle of xoz plane, and the direction w represents the rotation of yoz plane
The rotation angle in angle, the direction v and the direction w can synthesize an azimuth, this azimuth represents total heeling condition.That is,
It is adjusted by the direction v and the direction w, lateral attitude of adjustable first lens assembly 100 relative to the second lens assembly 200
(inclination of optical axis of the optical axis of namely described first lens assembly 100 relative to second lens assembly 200).
The adjusting of above-mentioned x, y, z, r, v, w six-freedom degree may influence the optical system image quality (such as
Influence the size of resolving power).In the other embodiments of the utility model, relative position regulative mode, which can be, only to be adjusted
Any one of six-freedom degree is stated, it can also wherein wantonly two or the combination of more.
Further, in one embodiment, in active calibration step, the movement further includes in the adjustment plane
Translation, i.e. movement on the direction x, y.
Further, in one embodiment, the active calibration further include: according to the actual measurement solution picture of the optical system
Power (refers to the resolving power according to measured by the actual imaging result of optical system), adjusts and determines first lens assembly 100
Axis relative to second lens assembly 200 axis angle, i.e. adjusting on the direction w, v.The optical frames assembled
In head or camera module, can have between the axis of first lens assembly 100 and the axis of second lens assembly 200
There is the angle being not zero.
Further, in one embodiment, the active calibration further include: along the side perpendicular to the adjustment plane
It is determined to movement first lens assembly 100 (adjusting i.e. on the direction z) according to the actual measurement resolving power of the optical system
Between first lens assembly 100 and second lens assembly 200 perpendicular to it is described adjustment plane direction on
Relative position.
Further, in one embodiment, in the pre-determined bit step, make the bottom surface of first lens assembly 100
There is gap between the top surface of second lens assembly 200；And in the adhesion step, the glue material is arranged in described
Gap.
In one embodiment, in active calibration step, the second lens assembly 200 can be fixed, passes through fixture clamping the
One lens assembly 100, under the drive for six shaft movement mechanisms being connect with fixture, mobile first lens assembly 100, to realize
The relative movement under above-mentioned six-freedom degree between first lens assembly 100 and the second lens assembly 200.Wherein, fixture can
To bear against or partially bear against the side of the first lens assembly 100, so that the first lens assembly 100 be picked up.In a reality
It applies in example, the curvature of the first eyeglass can be greater than the curvature of the second eyeglass, so that sensitivity of first lens assembly to position change
Degree is greater than the second lens assembly, consequently facilitating active calibration.Such as it can reduce the first lens assembly during active calibration
Stroke, or enhancing active calibration regulating power (i.e. enhance to manufacture and assembling link in various errors compensate
Ability, regulating power means to compensate bigger error more greatly, so that optical system be made to can achieve design
It is required that).
It is noted that the eyeglass number of the first lens assembly and the second lens assembly can be according to need in above-described embodiment
It adjusts.Such as first the number of lenses of lens assembly and the second lens assembly can be respectively two and four, can also be respectively
Three and three, it can also be respectively four and two, can also be respectively five and one.The eyeglass sum of entire optical lens can also basis
It needs to adjust, such as the eyeglass sum of optical lens can be six, be also possible to five or seven.
It is also important to note that the optical lens of the application, lens assembly is not limited to two, such as the number of lens assembly can also
To be the numbers for being greater than two such as three or four.It, can be by adjacent two when the lens assembly for forming optical lens is more than two
Lens assembly is respectively seen as previously described first lens assembly and previously described second lens assembly.
Above description is only the better embodiment of the application and the explanation to institute's application technology principle.Art technology
Personnel should be appreciated that utility model range involved in the application, however it is not limited to which the specific combination of above-mentioned technical characteristic forms
Technical solution, while should also cover do not depart from the utility model design in the case where, by above-mentioned technical characteristic or its etc.
The other technical solutions for carrying out any combination with feature and being formed.Such as features described above and (but being not limited to) disclosed herein
Technical characteristic with similar functions is replaced mutually and the technical solution that is formed.
Claims (16)
1. a kind of optical lens characterized by comprising
First lens assembly comprising the first lens barrel and at least one first eyeglass for being installed on first lens barrel, described the
One eyeglass includes the first structure area other than the first optics area and first optics area for imaging, and described at least one
There is first eyeglass of bottom positioned at bottom in a first eyeglass；
Second lens assembly comprising the second lens barrel and at least one second eyeglass for being installed on second lens barrel, it is described extremely
Few first eyeglass and at least one described second eyeglass collectively form imageable optical system, and the bottom first
The bottom surface in the first structure area of eyeglass is lower than the top surface of second lens barrel；And
Glue material is connected, positioned at first lens assembly and second lens assembly between, and is suitable for support described the
One lens assembly and second lens assembly and fixed relative position between the two.
2. optical lens according to claim 1, which is characterized in that the connection glue material is suitable for supporting and fixing described the
One lens assembly and second lens assembly, so that the two is maintained at relative position determined by active calibration, and described
There is the angle being not zero, wherein the active school between the axis of first lens assembly and the axis of second lens assembly
Standard is the actual imaging result according to the optical system and is done to first lens assembly and second lens assembly
Relative position adjustment.
3. optical lens according to claim 1, which is characterized in that the connection glue material includes the first glue material, is located at
Between the bottom surface of first lens barrel and the top surface of second lens barrel.
4. optical lens according to claim 3, which is characterized in that second eyeglass includes the second light for imaging
The second structural area other than school district and second optics area has one positioned at the top at least one described second eyeglass
A the second eyeglass of top；And
The connection glue material further includes the second glue material, between the first bottom surface and the second top surface, wherein first bottom surface
It is the bottom surface in the first structure area of first eyeglass of bottom, second top surface is the second structure of second eyeglass of top
The top surface in area.
5. optical lens according to claim 4, which is characterized in that first glue material is suitable for temporarily propping up after precuring
The relative position and second glue material of support and fixed first lens assembly and second lens assembly are suitable for solid
The relative position of permanent support and fixed first lens assembly and second lens assembly after change.
6. optical lens according to claim 5, which is characterized in that first glue material is light binding and described the
Two glue materials are hot-setting adhesive.
7. optical lens according to claim 5, which is characterized in that first glue material and second glue material are UV
Hot-setting adhesive.
8. optical lens according to claim 4, which is characterized in that first bottom surface and second top surface are flat
Smooth face.
9. optical lens according to claim 4, which is characterized in that the inside of second lens barrel has step-like breasting
Face, and at least part of second top surface bears against the step-like breasting face.
10. optical lens according to claim 9, which is characterized in that second glue material contacts second lens barrel.
11. optical lens according to claim 1, which is characterized in that have at least one described second eyeglass and be located at
One the second eyeglass of top of the top, wherein the second eyeglass of the light-emitting surface of the first eyeglass of the bottom and the top enters light
At least one of face is not convex surface.
12. optical lens according to claim 9, which is characterized in that second glue material does not contact second lens barrel.
13. optical lens according to claim 9, which is characterized in that wrap the second structural area of second eyeglass of top
It includes and bears against area and bond regions, wherein the side for bearing against area and top surface bear against the step-like breasting face, and the bonding
Area arranges second glue material.
14. optical lens according to claim 4, which is characterized in that second top surface has excessive glue groove, the excessive glue
For slot position in one end close to second optics area of second top surface, second glue material is black.
15. optical lens according to claim 1, which is characterized in that first lens assembly is located at the optical frames
Head front end, and second lens assembly is located at the optical lens rear end.
16. a kind of camera module, which is characterized in that including optical lens described in any one of claim 1-15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813850.7U CN208432778U (en) | 2018-05-29 | 2018-05-29 | Optical lens and camera module |
| PCT/CN2019/088814 WO2019228348A1 (en) | 2018-05-29 | 2019-05-28 | Optical lens, and camera module and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820813850.7U CN208432778U (en) | 2018-05-29 | 2018-05-29 | Optical lens and camera module |
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| CN208432778U true CN208432778U (en) | 2019-01-25 |
Family
ID=65100780
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820813850.7U Active CN208432778U (en) | 2018-05-29 | 2018-05-29 | Optical lens and camera module |
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| CN (1) | CN208432778U (en) |
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| WO2019228348A1 (en) * | 2018-05-29 | 2019-12-05 | 宁波舜宇光电信息有限公司 | Optical lens, and camera module and assembly method thereof |
| WO2020156027A1 (en) * | 2019-02-03 | 2020-08-06 | 宁波舜宇光电信息有限公司 | Optical lens, camera module, and assembly method for the optical lens |
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