CN110275265A - Optical lens, camera module and its assemble method - Google Patents
Optical lens, camera module and its assemble method Download PDFInfo
- Publication number
- CN110275265A CN110275265A CN201810220897.7A CN201810220897A CN110275265A CN 110275265 A CN110275265 A CN 110275265A CN 201810220897 A CN201810220897 A CN 201810220897A CN 110275265 A CN110275265 A CN 110275265A
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- Prior art keywords
- lens
- glue
- lens assembly
- glue material
- optical
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
Abstract
The present invention provides a kind of optical lens, it include: the first lens assembly, including the first lens barrel and at least one first eyeglass, the first lens barrel has hole for injecting glue, and hole for injecting glue has the outlet positioned at the top surface of first lens barrel or the entrance of lateral surface and positioned at the bottom surface of first lens barrel；Second lens assembly comprising the second lens barrel and at least one second eyeglass, the second eyeglass and the first eyeglass collectively form imageable optical system, and the end face at the top of second lens assembly has the glue groove of leading around optical axis, and glue groove is led in outlet alignment；And glue material, at least part inject the gap leading glue groove and being distributed between first, second lens assembly along glue groove is led, the two are bonded together.The present invention also provides corresponding optical lens assemble method and camera modules and its assemble method.The present invention can use the mode for first pre-fixing then encapsulating injection glue, and reduce glue curing deformation influences to upper and lower lens assembly bring.
Description
Technical field
The present invention relates to optical image technology fields, specifically, the present invention relates to optical lens, camera module and its groups
Dress method.
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 is that existing camera module is irreversible
The development trend turned.Currently, market proposes higher and higher demand to the image quality of camera module.Intended optical is influenced to set
The quality and the foozle during module packaging that the factor of the camera module resolving power of meter includes optical imaging lens.
Specifically, in the manufacturing process of optical imaging lens, influence camera lens resolving power factor from each element and
The error and lens materials refractive index that the assembly of its error assembled, the error of eyeglass spacer element thickness, each eyeglass cooperates
Variation etc..Wherein, each element and its error of assembly include the optics face thickness of each lens monomer, lens optical face rise,
Eccentric between optical surface face type, radius of curvature, eyeglass single side and face, lens optical face tilts equal error, and the size of these errors takes
Certainly in mould and die accuracy and formed precision control ability.The error of eyeglass spacer element thickness depends on the machining accuracy of element.Respectively
The error of the assembly cooperation of eyeglass depends on being assembled the dimensional tolerance of element and the assembly precision of camera lens.Lens materials refraction
The introduced error of the variation of rate then depends on the stability and batch consistency of material.
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
Increasing for quantity and constantly increase.Existing resolving power solution is that the size of the element high to each relative sensitivity is carried out
Allowance 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
Harsh, such as: part sensitivity camera lens 1um eccentricity of glasses lens can bring 9 ' image planes to tilt, and lead to machining eyeglass and assembling difficulty increasingly
Greatly, it simultaneously because feedback cycle is long in an assembling process, causes that the Measure of Process Capability (CPK) of lens assembling is low, fluctuation is big, leads
Cause fraction defective high.And as described above, it is present in multiple element, Mei Geyin because the factor for influencing camera lens resolving power very more
All there is the limit of the accuracy of manufacture in the control of element, if only promoting the precision of each element merely, hoisting power is limited, be promoted
It is with high costs, and it is not able to satisfy the increasing image quality demand in market.
On the other hand, in the process of camera module, the assembling process of each structural member (such as sensitive chip patch
Dress, motor camera lens lock process etc.) it all may cause sensitive chip inclination, multinomial slant stack may cause imaging modules
Parsing power cannot reach set specification, and it is low in turn result in Mo Zu factory yields.In recent years, Mo Zu factory passes through by imaging lens
When head and photosensitive module group assembling, the inclination of sensitive chip is mended by active calibration (Active Alignment) technique
It repays.However this technological compensa tion ability is limited.Since a variety of aberrations for influencing resolving power derive from optical system (especially optics
Imaging lens) ability itself, when the resolving power deficiency of optical imaging lens itself, existing photosensitive mould group active calibration work
Skill is difficult to compensate for.
To overcome drawbacks described above, present applicant has proposed a kind of based on active calibration technique adjustment and determines upper and lower sub- mirror
Then upper and lower sub- camera lens is bonded together according to identified relative position, and then produces complete by the relative position of head
The assemble method of optical lens or camera module.This solution is able to ascend the optical lens or camera shooting mould of mass production
The Measure of Process Capability (CPK) of group；Enable to material (such as sub- camera lens for assembling optical lens or camera module or
Photosensory assembly) the precision of each element and its requirement of assembly precision become loose, and then reduce and optical imaging lens and take the photograph
As the overall cost of mould group；The various aberrations of camera module can be repaired in an assembling process in real time, reduce fraction defective,
Production cost is reduced, image quality is promoted.However, active calibration and bonding based on upper and lower sub- camera lens are a kind of completely new lifes
Production. art will be realized reliable and stable mass production based on this production technology, still face lot of challenges.For example, utilizing glue
Material bonds the lens barrel of upper sub- camera lens and lower sub- camera lens, and glue material solidifies in deformation process, and glue material can act on lens barrel formation
Power, which will lead to lens barrel and undesirable deformation occurs, and then lead to the lens shape being mounted in the lens barrel and position
It changes.Under this situation, glue material is fully cured determined by lens position and the active calibration of rear actual optical system
There are deviations for the lens position of optical system, this may cause image quality and expection is not achieved.For another example the coefficient of expansion of glue material
It is fixed, but the glue material being arranged between upper and lower sub- camera lens is often non-uniform that (such as upper and lower lens barrel generates excessive glue meeting
Lead to glue material uneven thickness), this is easy to cause lens barrel unbalance stress to cause deformation, in turn results in eyeglass variation, reduces into image quality
Amount.
Summary of the invention
The present invention is intended to provide a kind of solution at least one the above-mentioned defect that can overcome the prior art.
According to an aspect of the invention, there is provided a kind of optical lens, comprising: the first lens assembly comprising first
Lens barrel and at least one first eyeglass being mounted in first lens barrel, wherein the first lens barrel has hole for injecting glue, the injecting glue
Hole has the outlet positioned at the top surface of first lens barrel or the entrance of lateral surface and positioned at the bottom surface of first lens barrel；Second
Lens assembly comprising the second lens barrel and at least one second eyeglass being mounted in second lens barrel, it is described at least one
Second eyeglass and at least one described first eyeglass collectively form imageable optical system, the top of second lens assembly
End face has the glue groove of leading of the optical axis around second lens assembly, and leads glue groove described in outlet alignment；And glue
Material leads glue groove and is distributed in first lens assembly and described second along the glue groove of leading described at least part injection
First lens assembly and second lens assembly are bonded together by the gap between lens assembly.
In one embodiment, the glue material includes the first glue material and the second glue material, and the bonding of second glue material
Power is greater than the bonding force of first glue material.
In one embodiment, the gap includes the first gap and the second gap, and first glue material is coated in described
First gap, second glue material is by leading glue groove described in hole for injecting glue injection to be distributed in second gap, and institute
The second gap described in the first gap-ratio is stated close to the outside of the optical lens.
In one embodiment, first gap is located at the end face of first lens barrel and the end face of second lens barrel
Between.
In one embodiment, the end face led glue groove and be located at second lens barrel, and second gap is located at
Between the end face of first lens barrel and the end face of second lens barrel.
In one embodiment, the glue material is used to support and fixes first lens assembly and second camera lens part
Part, so that the relative position of first lens assembly and second lens assembly is maintained at by determined by active calibration
Relative position.
In one embodiment, first glue material is the glue material by photocuring.
In one embodiment, second glue material is to pass through heat cure, moisture-curable, anaerobic curing or oxidative cure
Glue material.
In one embodiment, first glue material is UV glue or UV hot-setting adhesive.
In one embodiment, second glue material is hot-setting adhesive or UV hot-setting adhesive.
In one embodiment, first glue material and second glue material are same material in liquid, and described
First glue material and second glue material form the unlike material with diverse microcosmic structure after hardening, so that second glue material
The bonding force provided after solidification is greater than the bonding force provided after first glue material solidifies.
In one embodiment, first glue material and second glue material are UV hot-setting adhesive.
In one embodiment, first glue material and second glue material do not contact each other.
In one embodiment, size of first gap on the optical axis direction along the optical lens is 30-
100μm。
In one embodiment, size of second gap on the optical axis direction along the optical lens is 30-
100μm。
In one embodiment, second gap and first gap are in the optical axis direction along the optical lens
On size difference be less than threshold value.
In one embodiment, the axis of the hole for injecting glue is parallel with the optical axis or relative to the inclined light shaft.
In one embodiment, the entrance of the hole for injecting glue be located at first lens barrel top surface and the hole for injecting glue
Axis is parallel with the optical axis.
In one embodiment, the bottom end face of first lens barrel has the convex block in bottom view in a ring, and
The convex block corresponds to each other with the glue groove of leading, and the outlet is located at the convex block.
In one embodiment, second gap is located at the convex block and described leads between glue groove.
In one embodiment, described to lead glue groove in a top view and be in continuous annular or in annular jaggy.
In one embodiment, there are the notch multiple and multiple notches to be respectively aligned to the difference for leading glue groove
Position.
In one embodiment, first gap has the first opening towards the outside of the optical lens, on edge
On the direction of the optical axis size of first opening be greater than the average-size in first gap.
In one embodiment, first eyeglass is than second eyeglass close to the front end of the optical lens.
According to another aspect of the present invention, a kind of camera module is additionally provided comprising the optical lens of previous embodiment.
According to another aspect of the invention, a kind of optical lens assemble method is additionally provided, comprising: prepare the first camera lens part
Part and the second lens assembly, wherein first lens assembly includes the first lens barrel and is mounted in first lens barrel at least
One the first eyeglass, wherein the first lens barrel has hole for injecting glue, the hole for injecting glue has the top surface for being located at first lens barrel or outer
The entrance of side and positioned at the outlet of the bottom surface of first lens barrel, second lens assembly includes the second lens barrel and is mounted on
The end face of at least one second eyeglass in second lens barrel, the top of second lens assembly has around the second camera lens
The optical axis of component leads glue groove；First lens assembly and second lens assembly are pre-positioned, make it is described at least
One the second eyeglass and at least one described first eyeglass collectively form imageable optical system, and described in outlet alignment
Lead glue groove；The relative position of first lens assembly and second lens assembly is adjusted and determined based on active calibration；
And first lens assembly and second lens assembly are bonded by glue material, wherein at least part of the glue material
By leading glue groove described in hole for injecting glue injection, and first lens assembly and described second is distributed in along the glue groove of leading
First lens assembly and second lens assembly are bonded together by the gap between lens assembly.
In one embodiment, described bonded by glue material includes: to solidify the glue material, utilizes cured glue material branch
First lens assembly and second lens assembly are supportted, so that first lens assembly and second lens assembly
Relative position is maintained at through relative position determined by active calibration.
In one embodiment, described that first lens assembly and second lens assembly be pre-positioned also
It include: to make to form the first gap and the second gap between first lens assembly and second lens assembly, wherein described
The second gap is close to the outside of the optical lens described in first gap-ratio；Described includes: by the first glue by glue material bonding
Material is coated in first gap；Solidify first glue material so that first lens assembly and second lens assembly are pre-
It is fixed；Glue groove will be led described in the injection of the second glue material by the hole for injecting glue after pre-fixing, so that second glue material is along institute
It states and leads glue groove and be distributed in second gap, wherein the bonding force of second glue material is greater than the bonding force of first glue material；
And solidify second glue material so that first lens assembly and second lens assembly permanently combine.
In one embodiment, in described the step of being bonded by glue material, first glue material is light binding, described
Second glue material is hot-setting adhesive.
In one embodiment, the solidification first glue material includes: to solidify first glue by photocuring
Material.
In one embodiment, the solidification second glue material includes: to solidify second glue by heat cure
Material.
In accordance with a further aspect of the present invention, a kind of camera module assemble method is additionally provided, comprising: utilize previous embodiment
The optical lens assemble method assembles optical lens；And assembled optical lens is utilized to make camera module.
In accordance with a further aspect of the present invention, additionally providing a kind of camera module assemble method includes: to prepare the first camera lens part
Part and camera module component, wherein the camera module component includes combined second lens assembly and photosensitive mould group,
And first lens assembly includes the first lens barrel and at least one first eyeglass for being mounted in first lens barrel, wherein
First lens barrel has hole for injecting glue, and the hole for injecting glue has positioned at the top surface of first lens barrel or the entrance of lateral surface and is located at institute
The outlet of the bottom surface of the first lens barrel is stated, second lens assembly includes the second lens barrel and is mounted in second lens barrel extremely
Glue is led with the optical axis around the second lens assembly in the end face of few second eyeglass, the top of second lens assembly
Slot；First lens assembly and second lens assembly are pre-positioned, at least one described second eyeglass and institute are made
It states at least one first eyeglass and collectively forms imageable optical system, and lead glue groove described in outlet alignment；Based on actively
Calibrate the relative position to adjust and determine first lens assembly and second lens assembly；And it is bonded by glue material
First lens assembly and second lens assembly, wherein at least part of the glue material is infused by the hole for injecting glue
Enter it is described lead glue groove, and led between glue groove is distributed between first lens assembly and second lens assembly along described
First lens assembly and second lens assembly are bonded together by gap.
Compared with prior art, the present invention has at least one following technical effect:
1, the present invention can reduce the offset of lens position caused by lens barrel deformation.
2, the present invention can use and first pre-fix lens module, and then the mode of encapsulating injection glue, reduces glue curing
Deformation is influenced to upper and lower lens assembly bring.
3, the present invention can bring pollution to eyeglass to avoid excessive glue.
4, the present invention can provide camera module and optical lens with better image quality.
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 diagrammatic cross-section of the camera module 1000 of one embodiment of the invention；
Fig. 2 shows the schematic top plan views of the first lens barrel 101 in embodiment illustrated in fig. 1；
Fig. 3 shows the bonded areas of the first lens assembly 100 and the second lens assembly 200 in one embodiment of the invention
Enlarged local section schematic diagram；
Fig. 4 shows the part of the bonded areas of the first lens assembly 100 and the second lens assembly 200 in another embodiment
Amplification profile schematic diagram；
Fig. 5 shows another enlarged local section schematic diagram of Fig. 4 embodiment, and section shown by the figure is without described
Hole for injecting glue 109；
Fig. 6 shows the flow chart of the optical lens assemble method in one embodiment of the invention；
Fig. 7 shows the flow chart of step 40 in one embodiment of the invention；
Fig. 8 shows the flow chart of the camera module assemble method of another embodiment of the invention.
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. 1 shows the diagrammatic cross-section of the camera module 1000 of one embodiment of the invention.The camera module 1000 packet
Include optical lens and photosensory assembly 300.Wherein, optical lens includes the first lens assembly 100, the second lens assembly 200 and incites somebody to action
The glue material (not shown in figure 1) that first lens assembly 100 and the second lens assembly 200 are bonded together.Wherein, the first mirror
First eyeglass 102 that head part 100 lens barrel 101 and be mounted in first lens barrel 101 including first.First lens barrel
101 have hole for injecting glue 109, and the hole for injecting glue 109 has positioned at the entrance 109a of the top surface of first lens barrel 101 and positioned at institute
State the outlet 109b of the bottom surface of the first lens barrel 101.Further, Fig. 2 shows the first lens barrels 101 in embodiment illustrated in fig. 1
Schematic top plan view.Hole for injecting glue 109 has multiple (the present embodiment is four), they are distributed on a circle.It is readily appreciated that,
In other embodiments, the number of hole for injecting glue 109 is not limited to four, which is also possible to one, two, three, five etc..
As shown in Figure 1, hole for injecting glue 109 is vertical in the present embodiment, i.e. the axis of the hole for injecting glue 109 and the optical axis of optical lens is parallel.But
It is noted that in other embodiments, the axis of hole for injecting glue 109 can also be relative to the inclined light shaft of optical lens.Also, it infuses
The entrance in glue hole 109 also can be set the position other than the top surface of the first lens barrel 101, such as the entrance of hole for injecting glue 109 can be with
The lateral surface of first lens barrel 101 is set.
In one embodiment, the second lens assembly 200 include the second lens barrel and be mounted in second lens barrel five
One the first eyeglass 102 of a second eyeglass 202, this five the second eyeglasses 202 and the first lens assembly 100 collectively forms can be at
The optical system of picture.Also, the end face (such as top surface of the second lens barrel 201) at the top of the second lens assembly 200 has around institute
State leading glue groove 209 (this leads glue groove can be annular in shape in a top view) for the optical axis of the second lens assembly 200, and the note
Glue groove 209 is led described in the outlet alignment in glue hole 109, so that the glue (being referred to as glue material) injected from hole for injecting glue 109 enters
Lead glue groove 209.Glue groove 209 is led described at least part injection of glue material and is distributed in described first along the glue groove 209 of leading
Gap between lens assembly 100 and second lens assembly 200, by first lens assembly 100 and described second
Lens assembly 200 is bonded together.
Referring still to Fig. 1, in one embodiment, the second lens assembly 200 can also include motor 203, the second lens barrel
202 may be mounted in the carrier of motor 203.The photosensory assembly 300 includes wiring board 301, installs in assist side 301
On sensitive chip 302, installation assist side 301 and around the cylindrical support body 303 of the sensitive chip and it is mounted on tubular
Colour filter 304 on supporter 303.The motor 203 is installed thus by the second camera lens part in the top surface of the cylindrical support body 303
Part 200 is fixed together with photosensory assembly 300.It is noted that in other embodiments of the invention, the motor 203 in Fig. 1
It can be replaced or the motor 203 in Fig. 1 or be cancelled and directly by second by the other structures of such as cylindrical support body
Lens barrel 201 is mounted on the top surface of cylindrical support body 303.It may be noted that the motor 203 can also be other in other embodiments
The optical actuator of type is replaced, such as SMA (marmem) actuator.Wherein, optical actuator refers to for promoting
The optical lens device mobile relative to sensitive chip.
Further, Fig. 3 shows the first lens assembly 100 and the second lens assembly 200 in one embodiment of the invention
Bonded areas enlarged local section schematic diagram.With reference to Fig. 3, first lens assembly 100 and second lens assembly
Gap between 200 includes the first gap and the second gap.The first gap and second have been marked respectively with " 1. " and " 2. " in Fig. 3
The position in gap.The glue material includes the first glue material and the second glue material, wherein the first glue material and the second glue material are located at the
One gap and the second gap, and first the second gap of gap-ratio is close to outside (i.e. the second gap-ratio of the optical lens
Optical axis of one gap close to the optical lens).Wherein the bonding force of the second glue material is greater than the bonding force of first glue material.Institute
The first glue material is stated coated in first gap, second glue material passes through the 109 (entrance of hole for injecting glue 109 of hole for injecting glue
109a and outlet 109b are located at the top surface 101a and bottom surface 101b of the first lens barrel 101) glue groove 209 is led to be distributed described in injection
In second gap, and the second gap described in first gap-ratio is close to the outside of the optical lens (between i.e. second
Gap is than the first gap close to the optical axis of the optical lens).In one embodiment, the first gap may be at the second gap
Different height (in the present embodiment, highly referring to along the scale on optical axis direction).First gap and the second gap are respectively positioned on
Between the end face (lower end surface, i.e. bottom surface) of first lens barrel 101 and the end face (upper surface, i.e. top surface) of the second lens barrel 201.Still join
Examine Fig. 3, the bottom surface 101b of the first lens barrel 101 forms step-like, and specifically, bottom surface 101b includes that the first bottom surface is segmented 101c
101d is segmented with the second bottom surface and connects the bottom surface connection segment of the first bottom surface segmentation 101c and the second bottom surface segmentation 101d
101e.The top surface 201a formation of second lens barrel 201 is matched step-like with bottom surface 101b, and specifically, top surface 201a includes
First top surface is segmented 201c and the second top surface segmentation 201d and the first top surface of connection segmentation 201c and the second top surface is segmented 201d
Top surface connection segment 201e.First gap is located at the first bottom surface segmentation 101c and described the of first lens barrel 101
Between the first top surface segmentation 201c of two lens barrels 201.Second gap is located at the second bottom surface segmentation 101d of first lens barrel 101
Between the second top surface segmentation 201d of second lens barrel 201.Wherein, the glue groove 209 of leading is formed in second top surface
It is segmented 201d.
In the present embodiment, after the first glue material and the solidification of the second glue material, first lens assembly 100 and described the can support
Two lens assemblies 200, so that the relative position of first lens assembly 100 and second lens assembly 200 is maintained at logical
Relative position determined by active calibration is crossed, to improve the image quality of optical lens or camera module.
In one embodiment, the first glue material can be UV glue.Second glue material can be hot-setting adhesive.UV glue is coated in first
Gap.UV glue is solidified by the direct irradiation of light, with to the first lens assembly and the second lens assembly according to active calibration
Identified relative position is pre-fixed.Then heat by solid glue by hole for injecting glue injection the second gap, then to pre-fixing after
The optical lens of injection hot-setting adhesive is heated, so that the thermosetting adhesive curing of its second gap location, to enhance optical lens
Structural strength improves the reliability of optical lens.
It may be noted that in other embodiments, the first glue material can also be that other glue materials by photocuring (such as can be
UV hot-setting adhesive).Second glue material can also be other glue materials by heat cure, moisture-curable, anaerobic curing or oxidative cure.
In another embodiment, the first glue material and the second glue material can be the same material in liquid, such as the first glue
Material and the second glue material can be all made of UV hot-setting adhesive.However, the UV hot-setting adhesive for being located at the first gap and the second gap is respectively adopted
Different modes solidified (such as can first with the UV hot-setting adhesive in the first gap of light direct irradiation make its complete photocuring, so
Heat cure is carried out to the UV hot-setting adhesive in the second gap again afterwards), to form the different materials with diverse microcosmic structure after hardening
Matter, so that the bonding force that second glue material provides after solidifying is greater than the bonding force provided after first glue material solidifies.It is described
Microstructure for example can be molecular structure, micron-sized physical aspect, molecular ratios, lattice form etc..
Further, in one embodiment, first glue material and second glue material can not contact each other, to keep away
Chemical change is generated after exempting from the first glue material and the mixing of the second glue material, influences glue property.Due to avoiding the first glue material and second
Chemical change is generated after glue material mixing, the present embodiment can further enhance the reliability of optical lens or camera module.
Further, in one embodiment, first gap is on the optical axis direction along the optical lens
Having a size of 30-100 μm.
Further, in one embodiment, second gap is on the optical axis direction along the optical lens
Having a size of 30-100 μm.
Further, described when the first glue material and the second glue material use liquid when identical material (when uncured)
The difference of second gap and size of first gap on the optical axis direction along the optical lens is less than threshold value (threshold
Value can select in 0-100 μm of range).
In one embodiment, the axis of the hole for injecting glue is parallel with optical axis (as shown in Figure 3).But it is noted that concurrent
It is bright to be not limited to this, such as in another embodiment, the axis of hole for injecting glue can also be relative to inclined light shaft.
Further, Fig. 4 shows the bonding of the first lens assembly 100 and the second lens assembly 200 in another embodiment
The enlarged local section schematic diagram in region.The embodiment and the embodiment of Fig. 3 are essentially identical, and difference is the first lens barrel 101
Bottom surface forms a convex block 108 corresponding with glue groove 209 is led, and (convex block can be in circular ring shape in bottom view, thus and annulus
Shape leads the matching of glue groove 209).And the convex block 108 corresponds to each other with the glue groove of leading, and the outlet position of hole for injecting glue 109
In the convex block.Second gap is located at convex block 108 and described leads between glue groove 109.It is described due to increasing convex block 108
Second gap and first gap, in this way can be to avoid because of glue material thickness can be equal along the size on the optical axis direction
Degree is uneven and causes the first lens barrel 101 or the second lens barrel 201 that undesirable deformation occurs, so that the glue material institute after solidifying
Deviate the opposite position determined by active calibration in the relative position of fixed the first lens assembly 100 and the second lens assembly 200
It sets.Further, Fig. 5 shows another enlarged local section schematic diagram of Fig. 4 embodiment, section shown by the figure without
The hole for injecting glue 109.From fig. 5, it can be seen that convex block 108 is solid in the section.As can be seen that in addition to hole for injecting glue is arranged
Other than 109 one or more positions, convex block 108 can be it is solid, to constitute corresponding with glue groove 209 is led circular ring shape
(referring to the circular ring shape in bottom view).It may be noted that the circular ring shape is not limited to continuous circular ring shape in the application.For example,
In another embodiment, the glue groove 209 of leading can also be in annular jaggy in a top view.Correspondingly, the convex block 108
It can be in annular jaggy.In addition, the shapes such as the cross sectional shape of boss is including but not limited to trapezoidal, rectangle.Correspondingly, glue is led
The shapes such as the including but not limited to trapezoidal, rectangle of the cross sectional shape of slot.
Further, referring still to Fig. 3, in one embodiment, first gap has towards the optical lens
Outside the first opening, the size of first opening is greater than the flat of first gap on the direction along the optical axis
Equal size.
In above-described embodiment, than second eyeglass, close to the front end of the optical lens, (i.e. light enters first eyeglass
Penetrate end).But the present invention is not limited thereto.
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.For example, working as optical frames
Head lens assembly number be three when, optical lens may include two the first lens assemblies and be located at the two first camera lens parts
Second lens assembly between part, and all first eyeglasses and second camera lens part of the two the first lens assemblies
All second eyeglasses of part collectively form carry out active calibration can image optics system.When the number of the lens assembly of optical lens
When being four, optical lens may include two the first lens assemblies and two the second lens assemblies, and press the first lens assembly, second
Lens assembly, the first lens assembly, the second lens assembly order arrange from top to bottom, and the two the first lens assemblies
All second eyeglasses of all first eyeglasses and two the second lens assemblies collectively form carry out active calibration can image optics
System.Suchlike other deformations no longer repeat one by one herein.
Further, Fig. 6 shows the flow chart of the optical lens assemble method in one embodiment of the invention.With reference to figure
6, this method comprises:
Step 10, prepare the first lens assembly and the second lens assembly, wherein first lens assembly includes the first mirror
Cylinder and at least one first eyeglass being mounted in first lens barrel, wherein the first lens barrel has hole for injecting glue, the hole for injecting glue
Entrance with the top surface or lateral surface for being located at first lens barrel and positioned at the outlet of the bottom surface of first lens barrel, described the
Two lens assemblies include the second lens barrel and at least one second eyeglass for being mounted in second lens barrel, second camera lens part
Glue groove is led with the optical axis around the second lens assembly in the end face at the top of part.
Step 20, first lens assembly and second lens assembly are pre-positioned, make it is described at least one
Second eyeglass and at least one described first eyeglass collectively form imageable optical system, and the outlet alignment of the hole for injecting glue
It is described to lead glue groove.
Step 30, the phase of first lens assembly and second lens assembly is adjusted and determined based on active calibration
To position.
Step 40, first lens assembly and second lens assembly are bonded by glue material, wherein described
At least part of glue material is distributed in first mirror along the glue groove of leading by leading glue groove described in hole for injecting glue injection
Gap between head part and second lens assembly bonds first lens assembly and second lens assembly
Together.In this step, first lens assembly and second lens assembly are supported using cured glue material, so that described
The relative position of first lens assembly and second lens assembly is maintained at through relative position determined by active calibration.
Further, in one embodiment, in the step 30, make first lens assembly and second camera lens
The first gap and the second gap are formed between component, wherein the second gap described in first gap-ratio is close to the optical lens
Outside.First gap is for coating the first glue material, and the second gap is for coating the second glue material.The cohesive force of second glue material is greater than
First glue material.
Further, Fig. 7 shows the flow chart of step 40 in one embodiment of the invention.With reference to Fig. 7, the step 40
Including sub-step:
Step 401, the first glue material is coated in first gap.
Step 402, solidify first glue material so that first lens assembly and second lens assembly pre-fix.
Step 403, glue groove will be led described in the injection of the second glue material by the hole for injecting glue after pre-fixing, so that described second
Glue material is distributed in second gap along the glue groove of leading, wherein the bonding force of second glue material is greater than first glue material
Bonding force.
Step 404, solidify second glue material so that first lens assembly and second lens assembly are permanently tied
It closes.Wherein, the first glue material can be UV glue, and the second glue material can be hot-setting adhesive.UV glue is coated in the first gap.UV glue passes through light
Direct irradiation solidified, with to the first lens assembly and the second lens assembly according to relative position determined by active calibration
It is pre-fixed.Then hot-setting adhesive is injected into the second gap, then the optics to the injection hot-setting adhesive after pre-fixing by hole for injecting glue
Camera lens is heated, so that the thermosetting adhesive curing of its second gap location improves optics to enhance the structural strength of optical lens
The reliability of camera lens.
It may be noted that in other embodiments, the first glue material can also be that other glue materials by photocuring (such as can be
UV hot-setting adhesive).Second glue material can also be other glue materials by heat cure, moisture-curable, anaerobic curing or oxidative cure.
In another embodiment, the first glue material and the second glue material can be the same material in liquid, such as the first glue
Material and the second glue material can be all made of UV hot-setting adhesive.However, the UV hot-setting adhesive for being located at the first gap and the second gap is respectively adopted
Different modes solidified (such as can first with the UV hot-setting adhesive in the first gap of light direct irradiation make its complete photocuring, so
Heat cure is carried out to the UV hot-setting adhesive in the second gap again afterwards), to form the different materials with diverse microcosmic structure after hardening
Matter, so that the bonding force that second glue material provides after solidifying is greater than the bonding force provided after first glue material solidifies.It is described
Microstructure for example can be molecular structure, micron-sized physical aspect, molecular ratios, lattice form etc..
Further, in one embodiment, first glue material and second glue material can not contact each other, to keep away
Chemical change is generated after exempting from the first glue material and the mixing of the second glue material, influences glue property.Due to avoiding the first glue material and second
Chemical change is generated after glue material mixing, the present embodiment can further enhance the reliability of optical lens or camera module.
Further, in one embodiment, first gap is on the optical axis direction along the optical lens
Having a size of 30-100 μm.
Further, in one embodiment, second gap is on the optical axis direction along the optical lens
Having a size of 30-100 μm.
Further, described when the first glue material and the second glue material use liquid when identical material (when uncured)
The difference of second gap and size of first gap on the optical axis direction along the optical lens is less than threshold value (threshold
Value can select in 0-100 μm of range).
It may be noted that the first gap and the second gap on the optical axis direction along the optical lens size (for convenient for
Describe, the size in this paragragh on the optical axis direction along the optical lens is referred to size) it is finally by leading
Determined by dynamic calibration result, however the size is also related in the design gaps of design phase with optical lens.In the design phase,
When the size for the design gaps reserved between the first lens assembly and the structural plane of the second lens assembly is smaller, active calibration institute
The size in determining the first gap and the second gap also can reduction therewith.The size in lesser first gap and the second gap has
Help the second mutation for inhibiting glue material to solidify caused lens barrel and/or eyeglass, to improve optical lens or accordingly image mould
The image quality of group.
In step 402, when being bonded the first lens barrel and the second lens assembly using the first glue material, glue material solidifies shape
Become smaller to lens barrel formation active force, therefore not will lead to lens barrel and undesirable deformation occurs.Also, in the active calibration stage,
First lens assembly and/or the second lens assembly are usually by outside intake mechanism intake (such as clamping or absorption), to adjust the
The relative position of one lens assembly and the second lens assembly.Pre-fixing can make between the first lens assembly and the second lens assembly
Relative position absorb mechanism outside the disengaging after remain at relative position determined by active calibration.That is, first
It is provided and is supported so that the two is maintained at active calibration determines for the first lens assembly and the second lens assembly after glue material solidification
Relative position.And in step 403, part supporting role has been played in the solidification of the first glue material, therefore can be to avoid in the second glue
Lens position variation caused by occurring in material solidification process because of lens barrel deformation, is formed by the first mirror after ensuring that solidification
First lens assembly determined by permanent relative positions and active calibration between head part and the second lens assembly and the second mirror
Relative position between head part is consistent.Also, glue material is injected by hole for injecting glue, is not needed the first lens assembly (or second
Lens assembly) it removes, the relative position that can be effectively avoided between the first lens assembly and the second lens assembly is deviateed actively
Relative position determined by calibrating, thus the image quality of improving optical camera lens or camera module.
It further, in one embodiment, can be before executing step 30, in first lens assembly and described
Gap between two lens assemblies carries out the first glue material coating, executes step 30 again then to adjust and determine the first lens assembly
With the relative position of the second lens assembly.After determining the relative position (i.e. step 401 executes before step 30), step is executed
Rapid 402~404 solidify glue material, to support first lens assembly and second camera lens part using cured glue material
Part, and then be maintained at the relative position of first lens assembly and second lens assembly and determined by active calibration
Relative position.And in another embodiment, step 30 can be first carried out to adjust and determine the first lens assembly and second
The relative position of lens assembly.After determining the relative position, temporarily the first lens assembly (or second lens assembly) is removed,
Then the first glue material coating is carried out, then is moved back to the first lens assembly (or second lens assembly) based on identified relative position
(i.e. step 401 executes after step 30).Final curing glue material makes first lens assembly and second lens assembly
Relative position be maintained at through relative position determined by active calibration.
Further, according to one embodiment of present invention, a kind of camera module assemble method is additionally provided, comprising: benefit
Optical lens is assembled with the optical lens assemble method of aforementioned any embodiment, then utilizes assembled optical lens to make and takes the photograph
As mould group.
Further, Fig. 8 shows the flow chart of the camera module assemble method of another embodiment of the invention, the party
Method includes:
Step 100, prepare the first lens assembly and camera module component, wherein the camera module component includes being incorporated in
The second lens assembly and photosensitive mould group together, and first lens assembly includes the first lens barrel and is mounted on described first
At least one first eyeglass in lens barrel, wherein the first lens barrel has hole for injecting glue, the hole for injecting glue, which has, is located at first mirror
The top surface of cylinder or the entrance of lateral surface and positioned at the outlet of the bottom surface of first lens barrel, second lens assembly includes second
Lens barrel and at least one second eyeglass being mounted in second lens barrel, the end face at the top of second lens assembly has
Surround the optical axis of the second lens assembly leads glue groove.
Step 200, first lens assembly and second lens assembly are pre-positioned, make it is described at least one
Second eyeglass and at least one described first eyeglass collectively form imageable optical system, and the outlet alignment of the hole for injecting glue
It is described to lead glue groove.
Step 300, first lens assembly and second lens assembly are adjusted and determined based on active calibration
Relative position.
Step 400, first lens assembly and second lens assembly are bonded by glue material, wherein the glue material
At least part by leading glue groove described in hole for injecting glue injection, and be distributed in first camera lens part along the glue groove of leading
First lens assembly and second lens assembly are bonded in one by the gap between part and second lens assembly
It rises.In this step, first lens assembly and second lens assembly are supported using cured glue material, so that described first
The relative position of lens assembly and second lens assembly is maintained at through relative position determined by active calibration.
As can be seen that the second lens assembly and photosensitive mould group are first assembled in one in the present embodiment compared with previous embodiment
It rises and constitutes camera module component, then camera module component and the first lens assembly are assembled again, obtain complete camera module.
The process that camera module component and the first lens assembly are assembled can also there are many deformations, such as can refer to previously described light
Learn multiple embodiments of lens assembling method, the assembling of Lai Shixian camera module component and the first 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 invention scope involved in the application, however it is not limited to skill made of the specific combination of above-mentioned technical characteristic
Art scheme, while should also cover in the case where not departing from the inventive concept, by above-mentioned technical characteristic or its equivalent feature into
Row any combination and the other technical solutions formed.Such as features described above and (but being not limited to) disclosed herein have it is similar
The technical characteristic of function is replaced mutually and the technical solution that is formed.
Claims (33)
1. a kind of optical lens characterized by comprising
First lens assembly comprising the first lens barrel and at least one first eyeglass being mounted in first lens barrel, wherein
First lens barrel has hole for injecting glue, and the hole for injecting glue has positioned at the top surface of first lens barrel or the entrance of lateral surface and is located at institute
State the outlet of the bottom surface of the first lens barrel；
Second lens assembly comprising the second lens barrel and at least one second eyeglass being mounted in second lens barrel, it is described
At least one second eyeglass and at least one described first eyeglass collectively form imageable optical system, second lens assembly
Top end face there is the optical axis around second lens assembly lead glue groove, and the outlet be aligned described in lead glue
Slot；And
Glue material leads glue groove and is distributed in first lens assembly and institute along the glue groove of leading described at least part injection
The gap between the second lens assembly is stated, first lens assembly and second lens assembly are bonded together.
2. optical lens according to claim 1, which is characterized in that the glue material includes the first glue material and the second glue material,
And the bonding force of second glue material is greater than the bonding force of first glue material.
3. optical lens according to claim 1, which is characterized in that the gap includes the first gap and the second gap,
First glue material is coated in first gap, and second glue material is by leading glue groove described in hole for injecting glue injection to be distributed
In second gap, and the second gap described in first gap-ratio is close to the outside of the optical lens.
4. optical lens according to claim 3, which is characterized in that first gap is located at the end of first lens barrel
Between face and the end face of second lens barrel.
5. optical lens according to claim 3, which is characterized in that the end led glue groove and be located at second lens barrel
Face, and second gap is located between the end face of first lens barrel and the end face of second lens barrel.
6. optical lens according to claim 1, which is characterized in that the glue material is used to support and fixes first mirror
Head part and second lens assembly, so that the relative position of first lens assembly and second lens assembly is kept
Passing through relative position determined by active calibration.
7. optical lens according to claim 3, which is characterized in that first glue material is the glue material by photocuring.
8. optical lens according to claim 3, which is characterized in that second glue material is solid by heat cure, moisture
The glue material of change, anaerobic curing or oxidative cure.
9. optical lens according to claim 3, which is characterized in that first glue material is UV glue or UV hot-setting adhesive.
10. optical lens according to claim 3, which is characterized in that second glue material is hot-setting adhesive or UV hot-setting adhesive.
11. optical lens according to claim 3, which is characterized in that first glue material and second glue material are in liquid
It is same material when state, and first glue material and second glue material are formed after hardening with diverse microcosmic structure not
Same material, so that the bonding force that second glue material provides after solidifying is greater than the bonding force provided after first glue material solidifies.
12. optical lens according to claim 11, which is characterized in that first glue material and second glue material are
UV hot-setting adhesive.
13. optical lens according to claim 3, which is characterized in that first glue material and second glue material are each other
It does not contact.
14. optical lens according to claim 3, which is characterized in that first gap is along the optical lens
Optical axis direction on size be 30-100 μm.
15. optical lens according to claim 3, which is characterized in that second gap is along the optical lens
Optical axis direction on size be 30-100 μm.
16. optical lens according to claim 3, which is characterized in that second gap and first gap are on edge
The difference of size on the optical axis direction of the optical lens be less than threshold value.
17. optical lens according to claim 1, which is characterized in that the axis of the hole for injecting glue is parallel with the optical axis
Or relative to the inclined light shaft.
18. optical lens according to claim 1, which is characterized in that the entrance of the hole for injecting glue is located at first mirror
The top surface and the axis of the hole for injecting glue of cylinder are parallel with the optical axis.
19. optical lens according to claim 1, which is characterized in that the bottom end face of first lens barrel, which has, to be faced upward
Convex block in view in a ring, and the convex block corresponds to each other with the glue groove of leading, and the outlet is located at the convex block.
20. optical lens according to claim 19, which is characterized in that second gap be located at the convex block with it is described
It leads between glue groove.
21. optical lens according to claim 1, which is characterized in that described to lead glue groove in a top view be in continuous ring
Shape is in annular jaggy.
22. optical lens according to claim 21, which is characterized in that the notch has multiple and multiple notches
It is respectively aligned to the different location for leading glue groove.
23. optical lens according to claim 3, which is characterized in that first gap has towards the optical frames
First opening in the outside of head, the size of first opening is greater than first gap on the direction along the optical axis
Average-size.
24. optical lens according to claim 1, which is characterized in that first eyeglass is more close than second eyeglass
The front end of the optical lens.
25. a kind of camera module, which is characterized in that including optical lens described in any one of claim 1-24.
26. a kind of optical lens assemble method characterized by comprising
Prepare the first lens assembly and the second lens assembly, wherein first lens assembly includes the first lens barrel and is mounted on institute
At least one first eyeglass in the first lens barrel is stated, wherein the first lens barrel has hole for injecting glue, the hole for injecting glue has positioned at described
The top surface of first lens barrel or the entrance of lateral surface and positioned at the outlet of the bottom surface of first lens barrel, the second lens assembly packet
At least one second eyeglass for including the second lens barrel and being mounted in second lens barrel, the end at the top of second lens assembly
Glue groove is led with the optical axis around the second lens assembly in face；
First lens assembly and second lens assembly are pre-positioned, at least one described second eyeglass and institute are made
It states at least one first eyeglass and collectively forms imageable optical system, and lead glue groove described in outlet alignment；
The relative position of first lens assembly and second lens assembly is adjusted and determined based on active calibration；And
First lens assembly and second lens assembly are bonded by glue material, wherein at least part of the glue material
By leading glue groove described in hole for injecting glue injection, and first lens assembly and described second is distributed in along the glue groove of leading
First lens assembly and second lens assembly are bonded together by the gap between lens assembly.
27. optical lens assemble method according to claim 26, which is characterized in that described bonded by glue material is wrapped
It includes:
Solidify the glue material, supports first lens assembly and second lens assembly using cured glue material, so that
The relative position of first lens assembly and second lens assembly is maintained at through opposite position determined by active calibration
It sets.
28. optical lens assemble method according to claim 26, which is characterized in that described to first camera lens part
Part and second lens assembly are pre-positioned further include: are made between first lens assembly and second lens assembly
The first gap and the second gap are formed, wherein the second gap described in first gap-ratio is close to the outside of the optical lens；
It is described to include: by glue material bonding
First glue material is coated in first gap；
Solidify first glue material so that first lens assembly and second lens assembly pre-fix；
Glue groove will be led described in the injection of the second glue material by the hole for injecting glue after pre-fixing, so that second glue material is along described
It leads glue groove and is distributed in second gap, wherein the bonding force of second glue material is greater than the bonding force of first glue material；With
And
Solidify second glue material so that first lens assembly and second lens assembly permanently combine.
29. optical lens assemble method according to claim 28, which is characterized in that it is described by glue material bond
In step, first glue material is light binding, and second glue material is hot-setting adhesive.
30. optical lens assemble method according to claim 28, which is characterized in that the solidification first glue material
It include: to solidify first glue material by photocuring.
31. optical lens assemble method according to claim 28, which is characterized in that it is characterized in that, the solidification
Second glue material includes: to solidify second glue material by heat cure.
32. a kind of camera module assemble method characterized by comprising
Optical lens is assembled using optical lens assemble method described in any one of claim 26-31；And
Assembled optical lens is utilized to make camera module.
33. a kind of camera module assemble method characterized by comprising
Prepare the first lens assembly and camera module component, wherein the camera module component includes combined second mirror
Head part and photosensitive mould group, and first lens assembly includes the first lens barrel and is mounted in first lens barrel at least
One the first eyeglass, wherein the first lens barrel has hole for injecting glue, the hole for injecting glue has the top surface for being located at first lens barrel or outer
The entrance of side and positioned at the outlet of the bottom surface of first lens barrel, second lens assembly includes the second lens barrel and is mounted on
The end face of at least one second eyeglass in second lens barrel, the top of second lens assembly has around the second camera lens
The optical axis of component leads glue groove；
First lens assembly and second lens assembly are pre-positioned, at least one described second eyeglass and institute are made
It states at least one first eyeglass and collectively forms imageable optical system, and lead glue groove described in outlet alignment；
The relative position of first lens assembly and second lens assembly is adjusted and determined based on active calibration；And
First lens assembly and second lens assembly are bonded by glue material, wherein at least part of the glue material
By leading glue groove described in hole for injecting glue injection, and first lens assembly and described second is distributed in along the glue groove of leading
First lens assembly and second lens assembly are bonded together by the gap between lens assembly.
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| CN201810220897.7A CN110275265A (en) | 2018-03-16 | 2018-03-16 | Optical lens, camera module and its assemble method |
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| CN201810220897.7A CN110275265A (en) | 2018-03-16 | 2018-03-16 | Optical lens, camera module and its assemble method |
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