CN208384208U - Optical lens and camera module - Google Patents
Optical lens and camera module Download PDFInfo
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- CN208384208U CN208384208U CN201820437842.7U CN201820437842U CN208384208U CN 208384208 U CN208384208 U CN 208384208U CN 201820437842 U CN201820437842 U CN 201820437842U CN 208384208 U CN208384208 U CN 208384208U
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Abstract
The utility model provides a kind of optical lens, comprising: the first lens assembly comprising at least one first eyeglass；Second lens assembly, it includes the second lens barrel and at least one second eyeglass for being mounted in second lens barrel, at least one described first eyeglass and at least one described second eyeglass collectively form imageable optical system, and have at least one free surface lens at least one described first eyeglass and at least one described second eyeglass；And connection medium, it is suitable for for first lens assembly and second lens assembly being fixed together.The present invention also provides corresponding camera modules.The utility model can reduce small size, large aperture optical lens distortion, camera module optics overall length can be reduced, free surface lens product bad problem caused by the position inaccurate of direction of rotation in lens barrel can be effectively avoided, the installation accuracy of free surface lens can be effectively improved.
Description
Technical field
The utility model relates to optical image technology fields, specifically, the utility model relates to optical lens and camera shooting
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.Large aperture camera lens can bring big field angle, however, this also cause camera lens optics overall length it is elongated and view
Distort larger problem for rink corner.Such as the mobile lens of 130 ° of field angles, distortion > 10%.In the neck of compact sized optical device
Domain, the above problem will be protruded more, it is difficult to be solved.
In recent years, free form surface (FREE-FORM) technology reaches its maturity, and can get using free form surface technology is had freely
The eyeglass of curved surface.Based on free form surface technology, Random Curved Surface Designing software can be passed through in optical design by progressive additional
Face type is machined in the front or rear surface of eyeglass, then for example, by lathe process complex surface.Currently, free form surface technology is in height
End spectacle lens industry obtains relatively broad application.If free surface lens to be used for the field (example of compact sized optical device
Such as mobile phone camera module field), it will help it reduces the distortion of big field angle and reduces the light of camera module to a certain extent
Learn overall length.By taking above-mentioned 130 ° of field angle mobile lens as an example, utilize free surface lens, it is contemplated that can reduce distortion to 2% with
Under.If free surface lens are used to do common auto-focusing mould group, optics can be reduced and be always about 10%, MTF design value
8% is promoted, distortion can be reduced to 1% or less.In other words, free surface lens can reduce or minimize optical system
Aberration realizes aberration correction, reduces the function of distortion, can also play the effect for reducing mould group optics overall length and/or modular volume
Fruit.
However, free form surface be it is a kind of complicated aspherical, be in most cases it is random asymmetrical, have more
Fold symmetry axis.And in the field of compact sized optical device (such as mobile phone camera module field), typical optics currently on the market
Camera lens is assembled by way of being embedded in piecewise.Specifically, the lens barrel that inside has step-like breasting face is prepared in advance,
Then each eyeglass is embedded in the step-like breasting face on the inside of the lens barrel piecewise to obtain complete optical lens.Due to mounting process
Limitation, eyeglass face type selected in lens barrel is usually the spherical surface or aspherical with rotational symmetry.If using certainly
By curve lens, the packaging technology of conventional compact camera module group lens just can not be installed accurately.Because having certainly
By in the optical system of curve lens, since non-rotationally-symmetric free surface lens keep its right since there is no single optical axis
Claim, it is difficult to find optical center, optical axis alignment and Correction Problemss are unable to control.The eyeglass face molded dimension of camera module usually < 0.7cm,
In the eyeglass installation of small size, higher installation requirement is needed, it is also desirable to more quick erectility.Problem above is all led
Free surface lens are caused to be dfficult to apply to compact camera module.
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
At least one first eyeglass；Second lens assembly comprising the second lens barrel and be mounted in second lens barrel at least one
Second eyeglass, at least one described first eyeglass and at least one described second eyeglass collectively form imageable optical system,
And there are at least one free surface lens at least one described first eyeglass and at least one described second eyeglass；And
Medium is connected, suitable for first lens assembly and second lens assembly are fixed together.
In one embodiment, the connection medium is glue material, is suitable for supporting and fixes first lens assembly
With second lens assembly, and make the relative position of first lens assembly and second lens assembly keep actively
Relative position determined by calibrating.In another embodiment, connection medium can also be welding medium.
In one embodiment, have between the axis of first lens assembly and the axis of second lens assembly
There is the angle being not zero.
In one embodiment, the number of first eyeglass is one, and first eyeglass is free-form curved mirror
Piece.
In one embodiment, the number of at least one second eyeglass is multiple, and it is described at least one the
There are a free surface lens in two eyeglasses.
In one embodiment, at least one described first eyeglass have free surface lens, and it is described at least
Also there are free surface lens in one the second eyeglass.
In one embodiment, first lens assembly further includes the first lens barrel, and it is described at least one first
Eyeglass is installed on the inside of first lens barrel.
In one embodiment, first lens assembly and/or second lens assembly are wrapped with it is characterized
The mark of the face type directional information of the free surface lens contained.
In one embodiment, the free surface lens have the datum plane perpendicular to its thickness direction, described
Free surface lens have reference direction, first lens assembly and/or second camera lens part in the datum plane
Part has the mark of the reference direction to characterize the face type directional information of the free surface lens.
In one embodiment, the connection medium is glue material, is suitable for supporting and fixes first lens assembly
With second lens assembly, and make the free surface lens reference direction and optical design determined by benchmark
The difference in direction is not more than 0.05 degree.
In one embodiment, on the optical axis direction along the optical lens, first lens assembly and institute
Stating has gap between the second lens assembly.
Another aspect according to the present utility model additionally provides a kind of camera module, including in aforementioned embodiments arbitrarily
Optical lens described in one.
Another aspect according to the present utility model, additionally provides a kind of optical lens, and assemble method includes: to prepare each other
The first lens assembly and the second lens assembly of separation, wherein first lens assembly includes at least one first eyeglass, institute
State at least one second eyeglass that the second lens assembly includes the second lens barrel He is mounted in second lens barrel, and it is described extremely
There are at least one free surface lens in few first eyeglass and at least one described second eyeglass；To first camera lens
Component and second lens assembly are pre-positioned, at least one described first eyeglass and at least one described second eyeglass are made
Collectively form imageable optical system；First lens assembly and second mirror are adjusted and determined based on active calibration
The relative position of head part；And first lens assembly and second lens assembly are bonded by glue material, make described
One lens assembly and second lens assembly are fixed and held at relative position determined by active calibration.
In one embodiment, there is at least one certainly in the preparation process, at least one described first eyeglass
By curve lens, and also there are at least one free surface lens at least one described second eyeglass.
In one embodiment, the active calibration includes: the actual measurement resolving power according to the optical system, passes through folder
Hold or adsorb first lens assembly and/or second lens assembly, come adjust and determine first lens assembly and
The relative positional relationship of second lens assembly.
In one embodiment, the active calibration further include: by adjusting first lens assembly and described the
The relative positional relationship of two lens assemblies, to make determined by reference direction and the optical design of the free surface lens
The difference of reference direction is not more than 0.05 degree, wherein the reference direction is used to characterize the face type direction of the free surface lens
Information.
In one embodiment, the active calibration further include: along adjustment the first lens assembly of planar movement, according to
The actual measurement resolving power of the optical system, determine between first eyeglass and second lens assembly along the plane
Moving direction on relative position, wherein the movement include it is described adjustment plane on rotation.
In one embodiment, in the active calibration step, the movement further includes in the adjustment plane
Translation.
In one embodiment, the active calibration further include: according to the actual measurement resolving power of the optical system, adjust
And determine the angle of axis of the axis of first lens assembly relative to second lens assembly.
In one embodiment, the active calibration further include: moved along the direction perpendicular to the adjustment plane
First lens assembly determines first lens assembly and described second according to the actual measurement resolving power of the optical system
The relative position in the direction perpendicular to the adjustment plane between lens assembly.
In one embodiment, in the preparation process, first lens assembly further includes the first lens barrel, and institute
State the inside that at least one first eyeglass is installed on first lens barrel.
In one embodiment, in the pre-determined bit step, make the bottom surface and described second of first lens assembly
There is gap between the top surface of lens assembly；And in the adhesion step, the glue material is arranged in the gap.
Another aspect according to the present utility model additionally provides a kind of camera module, assemble method, comprising: before utilization
State the optical lens assemble method assembling optical lens in any one embodiment；And it is taken the photograph based on optical lens assembling
As mould group.
Compared with prior art, the utility model has at least one following technical effect:
1, the utility model can be by reducing free surface lens applied to the optical lens of small size, large aperture
Distortion.
2, the utility model can by by free surface lens be applied to high pixel, small size, large aperture camera shooting mould
Group distorts to reduce.
3, the utility model can reduce camera module optics overall length, to reduce the volume of camera module.
4, undesirable rotation occurs in lens barrel for free surface lens when assembling can be effectively avoided in the utility model
Or the bad problem of product caused by the position inaccurate of direction of rotation.Free surface lens assembly error especially rotation error
Susceptibility it is very high, it is freely bent if assembling optical lens or camera module containing free surface lens based on traditional handicraft
Face eyeglass is easy to happen the position inaccurate of undesirable rotation or direction of rotation in lens barrel, and then leads to product image quality
It is not up to standard or even the problems such as can not be imaged.And the utility model can efficiently solve the above problem.
5, the utility model can effectively improve free surface lens in the installation accuracy of compact sized optical device field,
To improve the image quality of optical lens or camera module.
6, the utility model can effectively improve the production effect of optical lens or camera module containing free surface lens
Rate and promotion product yield, are suitable for producing in enormous quantities.
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 optical lens 1000 of the utility model one embodiment；
Fig. 2 shows the stereoscopic schematic diagrams of a free surface lens in the utility model one embodiment；
Fig. 3 shows the diagrammatic cross-section of the camera module 2000 of the utility model one embodiment；
Fig. 4 shows the diagrammatic cross-section of the optical lens 1000a of another embodiment of the utility model；
Fig. 5 shows the diagrammatic cross-section of the photosensory assembly 2000a of the optical lens 1000a based on Fig. 4；
Fig. 6 shows the diagrammatic cross-section of the optical lens 1000b of another embodiment of the utility model；
Fig. 7 shows the diagrammatic cross-section of the camera module 2000b of the optical lens 1000b based on Fig. 6；
Fig. 8 shows the flow chart of the optical lens assemble method in the utility model one embodiment；
Fig. 9 a shows relative position regulative mode in the active calibration in the utility model one embodiment；
Fig. 9 b shows the adjusting of the rotation in the active calibration of another embodiment of the utility model；
Fig. 9 c shows the phase for increasing the adjusting of the direction v, w in the active calibration of another embodiment of the utility model
To position regulative mode.
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 optical lens 1000 of the utility model one embodiment.The optical lens
1000 include the first lens assembly 100, the second lens assembly 200 and by first lens assembly 100 and the second lens assembly
The 200 glue material (not shown)s being bonded together.Wherein, the first lens assembly 100 includes the first lens barrel 101 and one first
Eyeglass 102, and the first eyeglass 102 is free surface lens.Second lens assembly 200 includes the second lens barrel 201 and five second
Eyeglass 202.Glue material is arranged in the gap 400 between the first lens assembly 100 and the second lens assembly 200, by described
One lens assembly 100 and second lens assembly 200 are fixed together.In the present embodiment, which supports and described in fixing
First lens assembly and second lens assembly, and make the opposite of first lens assembly and second lens assembly
Position keeps relative position determined by active calibration.
In the present embodiment, free surface lens have to be processed to form complicated light based on free form surface (FREE-FORM) technology
Learn surface.The complex optical surfaces can for example pass through Random Curved Surface Designing software for progressive additional face type in optical design
Design on the front or rear surface of eyeglass, then for example, by refined and polished on high-precision numerically controlled lathe and etc. processing
And it obtains.Fig. 2 shows the stereoscopic schematic diagrams of a free surface lens in the utility model one embodiment.With reference to Fig. 2,
It can be seen that free form surface is a kind of complicated aspherical, it is in most cases random asymmetrical.For free song
For the eyeglass of face, there is very strong directionality in the plane perpendicular to its thickness direction.In the present embodiment, can by
The active calibration stage adjusts the relative positional relationship of first lens assembly 100 and second lens assembly 200, to make
The difference of the reference direction for stating free surface lens and reference direction determined by optical design is not more than 0.05 degree (wherein
The reference direction is used to characterize the face type directional information of the free surface lens), then again with the glue material for being located at gap 400
First lens assembly 100 and second lens assembly 200 are supported and fix, so that 100 He of the first lens assembly
The relative position of second lens assembly 200 keeps relative position determined by active calibration, to guarantee optical lens
Image quality.
In contrast, in traditional optical lens packaging technology, multiple lens sets are loaded in same lens barrel.And non-rotation
Turning symmetrical free surface lens does not have the symmetrical intrinsic property of optical axis, that is, cannot rely on the optical axis of eyeglass and carry out group and load onto
The operation such as positioning, adjustment, cause assembly difficulty very big, especially rotation of the free surface lens in traditional handicraft in lens barrel
It is extremely difficult to turn positioning.In other words, the susceptibility of free surface lens assembly error especially rotation error is very high, if base
Optical lens or camera module containing free surface lens are assembled in traditional handicraft, free surface lens are easy hair in lens barrel
The position inaccurate of raw undesirable rotation or direction of rotation, and then cause product image quality not up to standard or even can not be imaged
Problem.
Further, Fig. 3 shows the diagrammatic cross-section of the camera module 2000 of the utility model one embodiment.It should
Camera module 2000 includes optical lens and photosensory assembly 300 as shown in Figure 1.The photosensory assembly 300 includes wiring board
301, the tubular for installing the sensitive chip 302 in assist side 301, installing in assist side 301 and surrounding the sensitive chip
Supporter 303 and the colour filter 304 being mounted on cylindrical support body 303.Further, the second lens assembly 200 may be used also
To include motor, the second lens barrel 202 be may be mounted in the carrier of motor.Described in the top surface installation of the cylindrical support body 303
Motor is to which the second lens assembly 200 to be fixed together with photosensory assembly 300.It is noted that in the other of the utility model
In embodiment, motor can also be replaced by the other structures of such as cylindrical support body, or can also be cancelled and directly by
Two lens barrels 201 are mounted on the top surface of cylindrical support body 303.It may be noted that the motor can also be other in other embodiments
The optical actuator of type is replaced, such as SMA (marmem) actuator, MEMS actuator etc..Wherein, optical actuation
Device refers to the device for promoting optical lens mobile relative to sensitive chip.
Above-described embodiment can be abnormal to reduce by the way that free surface lens are applied to small size, the optical lens of large aperture
Become, it can be by the way that free surface lens be reduced distortion applied to the camera module of high pixel, small size, large aperture；It can be with
Camera module optics overall length is reduced, to reduce the volume of camera module；Free surface lens when assembling can be effectively avoided
Occur in lens barrel it is undesirable rotation or direction of rotation position inaccurate caused by the bad problem of product.
Further, in one embodiment, ruler of the gap 400 on the optical axis direction along the optical lens
Very little is 30-100 μm.
Further, Fig. 4 shows the diagrammatic cross-section of the optical lens 1000a of another embodiment of the utility model.Such as
Shown in Fig. 4, the present embodiment and optical lens shown in FIG. 1 difference are there is free surface lens in the second lens assembly 200
209.First eyeglass of the first lens assembly 100 is using conventional eyeglass.Further, Fig. 5 shows the optical lens based on Fig. 4
The diagrammatic cross-section of the photosensory assembly 2000a of 1000a.
Further, Fig. 6 shows the diagrammatic cross-section of the optical lens 1000b of another embodiment of the utility model.Such as
Shown in Fig. 6, the present embodiment and optical lens 1000 shown in FIG. 1 difference are the first lens assembly 100 and the second lens assembly
Free surface lens 209a and 209b are respectively provided in 200.It, can be by described in adjusting in the active calibration stage under this design
The relative position of first lens assembly 100 and second lens assembly 200 makes the face of free surface lens 209a and 209b
Type direction forms complementation, to preferably adjust the actual imaging quality of optical system.Further, Fig. 7 is shown based on Fig. 6
Optical lens 1000b camera module 2000b diagrammatic cross-section.Since adjusting can be passed through in the active calibration stage
The relative position of first lens assembly 100 and second lens assembly 200 makes free surface lens 209a and 209b
Face type direction form complementation, therefore camera module 2000b can have better image quality.
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. 8 shows the flow chart of the optical lens assemble method in the utility model one embodiment.Ginseng
Fig. 8 is examined, this method comprises:
Step 10, prepare the first lens assembly being separated from each other and the second lens assembly, wherein first lens assembly
Including the first lens barrel and at least one first eyeglass being mounted in first lens barrel, second lens assembly includes second
Lens barrel and at least one second eyeglass being mounted in second lens barrel.Wherein, it in the first eyeglass and the second eyeglass, at least deposits
In a free surface lens.
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.
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.In this step, using admittedly
The glue material of change supports and fixes first lens assembly and second lens assembly, so that first lens assembly and institute
The relative position for stating the second lens assembly is maintained at through relative position determined by active calibration.
It further, in one embodiment, can be before executing step 30, in first lens assembly and described
Gap between two lens assemblies carries out glue material coating, executes step 30 again then to adjust and determine the first lens assembly and the
The relative position of two lens assemblies.After determining the relative position, executing step 40 solidifies glue material, to utilize cured glue
Material supports first lens assembly and second lens assembly, and then makes first lens assembly and second camera lens
The relative position of component is maintained at through relative position determined by active calibration.And in another embodiment, it can first hold
Row step 30 is to adjust and determine the relative position of the first lens assembly and the second lens assembly.After determining the relative position,
Temporarily the first lens assembly (or second lens assembly) is removed, then carries out glue material coating, then based on identified opposite position
It sets and is moved back to the first lens assembly (or second lens assembly).Final curing glue material makes first lens assembly and described
The relative position of two lens assemblies is maintained at through relative position determined by active calibration.
Further, active calibration described herein can be in multiple degrees of freedom to the first lens assembly and second
The relative position of lens assembly is adjusted.Fig. 9 a shows opposite position in the active calibration in the utility model one embodiment
Set regulative mode.In the regulative mode, first lens assembly (being also possible to the first eyeglass) can be relative to described
Two lens assemblies move (the relative position adjustment i.e. in the embodiment has three degree of freedom) along x, y, z direction.The wherein side z
To for along the direction of optical axis, x, the direction y is the direction perpendicular to optical axis.X, the direction y is in an adjustment plane P,
Translation can be analyzed to two components in the direction x, y in adjustment plane P.
Fig. 9 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. 9 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. 9 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,
Adjusted by the direction v and the direction w, adjustable first lens assembly relative to the second lens assembly lateral attitude (namely
Inclination of the optical axis of first lens assembly relative to the optical axis of second lens assembly).
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.
Particularly, in one embodiment, the active calibration includes at least the calibration in the direction r.Specifically, the master
Dynamic calibration steps (step 30) includes: that (in the utility model, resolving power can lead to according to the actual measurement resolving power of the optical system
The MTF curve or SFR curve for crossing actual measurement obtain, but the method for obtaining resolving power is without being limited thereto), it is described by clamping or adsorbing
First lens assembly and/or second lens assembly, to adjust and determine first lens assembly and second camera lens
The relative positional relationship of component.Wherein, along adjustment the first lens assembly of planar movement, according to the actual measurement solution of the optical system
Image force determines the opposite position on the moving direction along the plane between first eyeglass and second lens assembly
It sets, wherein the movement includes the rotation in the adjustment plane, i.e. movement on the direction r.In the present embodiment, described first
Lens assembly and/or second lens assembly have the face type directional information for characterizing its free surface lens for being included
Mark.
In one embodiment, the free surface lens have perpendicular to its thickness direction datum plane, it is described from
There is reference direction, first lens assembly and/or second lens assembly in the datum plane by curve lens
Mark with the reference direction is to characterize the face type directional informations of the free surface lens.Free surface lens to
Rotational positioning in the datum plane is very sensitive, and in the active calibration stage, make the first lens assembly and the second camera lens part
Part is relatively moved and is adjusted along the direction r, and the installation accuracy in the reference direction of free surface lens can be improved.Such as it can be with
So that the difference of reference direction determined by the reference direction of the free surface lens and optical design is not more than 0.05
Degree, and then obtain small size, large aperture optical lens or the camera module with high image quality.In the present embodiment, in freedom
When curve lens carry out rotation correction with respect to other camera lenses, it can acquire and obtain in real time aberration adjustment data and correct, finally
So that the camera lens and/or camera module with free surface lens obtains more excellent imaging effect.By adjusting so that two
Optical system composed by lens assembly is small with preferable imaging performance, such as the surrounding amount of distortion of imaging, optical system
Aberration is small.The adjustment index of active calibration can different demands be configured.So that the active school of different adjustment indexs
Optical lens after standard meets different optical properties.
On the other hand, pre-determined bit the stage, the mark of reference direction can help free surface lens be quickly pre-positioned to
On direction determined by optical design, active accommodation is then carried out on the basis of pre-determined bit again.It will be helpful to improve light in this way
Learn the production efficiency of camera lens or camera module.It in another embodiment, can also be based on machine vision technique to free form surface
The face type direction of eyeglass carries out machine recognition, and the pre-determined bit in the direction r is carried out based on recognition result, then again in the base of pre-determined bit
Active accommodation is carried out on plinth.
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 adjusts and determines the angle of axis of the axis of first lens assembly relative to second lens assembly, i.e. w, the side v
Upward adjusting.In the optical lens or camera module assembled, the axis of first lens assembly and second camera lens
It can have the angle being not zero between the axis of component.
Further, in one embodiment, the active calibration further include: along the side perpendicular to the adjustment plane
To movement first lens assembly (adjusting i.e. on the direction z), according to the actual measurement resolving power of the optical system, determine described in
The relative position in the direction perpendicular to the adjustment plane between first lens assembly and second lens assembly.
Further, in one embodiment, in the pre-determined bit step (step 20), make first lens assembly
There is gap between bottom surface and the top surface of second lens assembly；And in the adhesion step (step 40), the glue material
It is arranged in the gap.
Further, in one embodiment, in the preparation process (step 10), first lens assembly can be with
Without the first lens barrel.Such as first lens assembly can be made of single first eyeglass.Pre-determined bit step (the step 20)
In, make that there is gap between the bottom surface of first eyeglass and the top surface of second lens assembly；And the adhesion step
In (step 40), the glue material is arranged in the gap.In the present embodiment, the first eyeglass can form one by being fitted into mutually
Multiple sub- eyeglasses formed.In the present embodiment, the side and top surface in the non-optical face for being not used in imaging of the first eyeglass can be with shapes
At light shield layer.The light shield layer can be formed by the side of the first eyeglass and top surface silk-screen printing light screening material.
In one embodiment, in active calibration step, the second lens assembly can be fixed, the first mirror is clamped by fixture
Head part, under the drive for six shaft movement mechanisms being connect with fixture, mobile first lens assembly, to realize the first camera lens part
The relative movement under above-mentioned six-freedom degree between part and the second lens assembly.Wherein, fixture can be born against or part is held
It is against the side of the first lens assembly, so that the first lens assembly be picked up.
Further, one embodiment according to the present utility model additionally provides a kind of camera module assemble method, packet
It includes: using the optical lens assemble method assembling optical lens of aforementioned any embodiment, then utilizing assembled optical lens
Make camera module.
Further, another embodiment according to the present utility model additionally provides another camera module assemble method
Flow chart, this method comprises:
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, second lens assembly include the second lens barrel and are mounted in second lens barrel
At least one second eyeglass.Also, at least there are a free surface lens in the first eyeglass and the second eyeglass.
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.
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.
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
Multiple embodiments of lens assembling method are learned, to realize the assembling of 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 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 (12)
1. a kind of optical lens characterized by comprising
First lens assembly comprising at least one first eyeglass；
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 first eyeglass and at least one described second eyeglass collectively form imageable optical system, and described at least one
There are at least one free surface lens in a first eyeglass and at least one described second eyeglass；And
Medium is connected, suitable for first lens assembly and second lens assembly are fixed together.
2. optical lens according to claim 1, which is characterized in that the connection medium is glue material, is suitable for support simultaneously
Fixed first lens assembly and second lens assembly, and make first lens assembly and second camera lens part
The relative position of part keeps relative position determined by active calibration.
3. optical lens according to claim 2, which is characterized in that the axis of first lens assembly and described second
There is the angle being not zero between the axis of lens assembly.
4. optical lens according to claim 1, which is characterized in that the number of first eyeglass is one, and described
First eyeglass is free surface lens.
5. optical lens according to claim 1, which is characterized in that the number of at least one second eyeglass is more
It is a, and there are a free surface lens at least one described second eyeglass.
6. optical lens according to claim 1, which is characterized in that at least one described first eyeglass certainly with one
By curve lens, and there are a free surface lens at least one described second eyeglass.
7. optical lens according to claim 1, which is characterized in that first lens assembly further includes the first lens barrel,
And at least one described first eyeglass is installed on the inside of first lens barrel.
8. optical lens according to claim 1, which is characterized in that first lens assembly and/or second mirror
Head part has the mark for the face type directional information for characterizing its free surface lens for being included.
9. optical lens according to claim 8, which is characterized in that the free surface lens have perpendicular to its thickness
The datum plane in direction, the free surface lens have reference direction, first lens assembly in the datum plane
And/or second lens assembly has the mark of the reference direction to characterize the face type direction letter of the free surface lens
Breath.
10. optical lens according to claim 9, which is characterized in that the connection medium is glue material, is suitable for support simultaneously
Fixed first lens assembly and second lens assembly, and make the reference direction of the free surface lens with
The difference of reference direction determined by optical design is not more than 0.05 degree.
11. optical lens according to claim 1, which is characterized in that on the optical axis direction along the optical lens,
There is gap between first lens assembly and second lens assembly.
12. a kind of camera module, which is characterized in that including the optical lens as described in any one of claim 1-11.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437842.7U CN208384208U (en) | 2018-03-29 | 2018-03-29 | Optical lens and camera module |
| TW108108070A TWI756521B (en) | 2018-03-29 | 2019-03-11 | Optical lens, camera module and assembly method thereof |
| EP19775617.4A EP3761098B1 (en) | 2018-03-29 | 2019-03-12 | Optical camera lens, camera module and assembly method thereof |
| KR1020207024042A KR102540411B1 (en) | 2018-03-29 | 2019-03-12 | Optical lens, imaging module and method for assembling the same |
| US17/041,814 US20210011264A1 (en) | 2018-03-29 | 2019-03-12 | Optical lens and camera module and assembling method therefor |
| PCT/CN2019/077765 WO2019184695A1 (en) | 2018-03-29 | 2019-03-12 | Optical lens and camera module and assembling method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437842.7U CN208384208U (en) | 2018-03-29 | 2018-03-29 | Optical lens and camera module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208384208U true CN208384208U (en) | 2019-01-15 |
Family
ID=64975483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820437842.7U Active CN208384208U (en) | 2018-03-29 | 2018-03-29 | Optical lens and camera module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208384208U (en) |
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| WO2019184695A1 (en) * | 2018-03-29 | 2019-10-03 | 宁波舜宇光电信息有限公司 | Optical lens and camera module and assembling method therefor |
| CN110320625A (en) * | 2018-03-29 | 2019-10-11 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and its assemble method |
| WO2020042803A1 (en) * | 2018-08-30 | 2020-03-05 | 宁波舜宇光电信息有限公司 | Optical lens, and method and system for assembling same |
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| WO2020200062A1 (en) * | 2019-03-30 | 2020-10-08 | 华为技术有限公司 | Lens assembly, camera, and terminal |
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| CN110320625A (en) * | 2018-03-29 | 2019-10-11 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and its assemble method |
| WO2019184695A1 (en) * | 2018-03-29 | 2019-10-03 | 宁波舜宇光电信息有限公司 | Optical lens and camera module and assembling method therefor |
| WO2020042803A1 (en) * | 2018-08-30 | 2020-03-05 | 宁波舜宇光电信息有限公司 | Optical lens, and method and system for assembling same |
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