CN207123647U

CN207123647U - Pick-up lens

Info

Publication number: CN207123647U
Application number: CN201721167409.8U
Authority: CN
Inventors: 黄林
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2018-03-20
Anticipated expiration: 2027-09-13

Abstract

This application discloses a kind of pick-up lens, the pick-up lens is sequentially included along optical axis by thing side to image side：First lens, the second lens, the 3rd lens and the 4th lens.First lens have negative power；3rd lens have positive light coke；Second lens and the 4th lens are respectively provided with focal power；The thing side of 3rd lens is convex surface, and the image side surface of the 4th lens is concave surface, and the radius of curvature R 8 of the lens image side surface of radius of curvature R 5 and the 4th of the 3rd lens thing side meets 0.7 ＜ R5/R8 ＜ 1.2.

Description

Pick-up lens

Technical field

The application is related to a kind of pick-up lens, more specifically, the application is related to a kind of pick-up lens for including four lens.

Background technology

With the conventional photosensitive member such as photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor element (CMOS) The raising of part performance and the reduction of size, proposed for the high image quality of pick-up lens to match and miniaturization higher It is required that.

In order to meet the requirement of miniaturization, F-number Fno that existing pick-up lens generally configures (camera lens it is total effectively burnt Entry pupil diameters away from/camera lens) 2.0 or more than 2.0, with realize minimize while with good optical property.But It is with the continuous development of the portable type electronic products such as smart mobile phone, higher requirement is proposed to the pick-up lens to match, Particularly when for insufficient light (such as rainy days, dusk), hand shaking, this F-number Fno is 2.0 or more than 2.0 Pick-up lens can not meet the imaging requirements of higher order.

Especially, as laser acquisition is apart from the extensive rise of camera applications, to suitable for laser acquisition apart from camera The requirement of pick-up lens also more and more higher.In general distance measurement camera lens volume is larger, can not meet the needs of miniaturization； And traditional small-sized lens opening is less than normal, distance measurement camera can not be used in.Therefore, it is necessary to which camera lens is ensureing image quality Meanwhile meet large aperture and minimize the requirement of these two aspects.

Utility model content

This application provides be applicable to portable type electronic product, can at least solve or part solve it is of the prior art The pick-up lens of above-mentioned at least one shortcoming, for example, wide-angle lens.

On the one hand, this application provides such a pick-up lens, the pick-up lens along optical axis by thing side to image side sequentially Including：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；3rd lens can have There is positive light coke；Second lens and the 4th lens are respectively provided with focal power；The thing side of 3rd lens can be convex surface, the 4th lens Image side surface can be concave surface, and the radius of curvature R 5 and the radius of curvature R 8 of the 4th lens image side surface of the 3rd lens thing side can meet 0.7 ＜ R5/R8 ＜ 1.2.

In one embodiment, total effective focal length f of the effective focal length f1 of the first lens and pick-up lens can meet -3 ＜ f1/f ＜ -1.5.

In one embodiment, the first lens in the center thickness CT1 on optical axis, the second lens in the center on optical axis Thickness CT2 and the 3rd lens can meet 0.9 ＜ CT3/ (CT1+CT2) ＜ 1.5 in the center thickness CT3 on optical axis.

In one embodiment, the first lens and the second lens spacing distance T12 and the first lens thing side on optical axis Distance TTL of the face to pick-up lens imaging surface on the optical axis can meet 0.1 ＜ T12/TTL ＜ 0.3.

In one embodiment, the spacing distance T23 and the first lens thing of the second lens and the 3rd lens on optical axis Distance TTL of the side to pick-up lens imaging surface on optical axis can meet 0.1 ＜ T23*10/TTL ＜ 0.6.

In one embodiment, effective pixel area diagonal line length half ImgH and camera lens on pick-up lens imaging surface Total effective focal length f of head can meet 1 ＜ ImgH/f ＜ 1.5.

In one embodiment, effective half bore DT11 of the first lens thing side and the 4th lens image side surface is effective Half bore DT42 can meet 1.3 ＜ DT11/DT42 ＜ 1.8.

In one embodiment, on effective half bore DT11 of the first lens thing side and pick-up lens imaging surface effectively Pixel region diagonal line length half ImgH can meet 1.2 ＜ DT11/ImgH ＜ 1.7.

In one embodiment, on effective half bore DT42 of the 4th lens image side surface and pick-up lens imaging surface effectively Pixel region diagonal line length half ImgH can meet 0.7 ＜ DT42/ImgH ＜ 1.

In one embodiment, effective half bore DT32 of the 3rd lens image side surface and the 4th lens thing side is effective Half bore DT41 can meet 0.9 ＜ DT32/DT41 ＜ 1.4.

In one embodiment, the image side surface of the 4th lens and the intersection point of optical axis are to effectively the half of the 4th lens image side surface Distance SAG42 and the 4th lens between bore summit on optical axis can meet 0 ＜ SAG42/ in the center thickness CT4 on optical axis CT4 ＜ 0.8.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and at least one subsequent lens.The thing side of first lens and image side At least one in face is concave surface；At least one in the thing side of second lens and image side surface is convex surface；3rd lens Thing side and image side surface can be convex surface, wherein, the first lens are in the center thickness CT1 on optical axis, the second lens in optical axis On center thickness CT2 and the 3rd lens can meet 0.9 ＜ CT3/ (CT1+CT2) ＜ in the center thickness CT3 on optical axis 1.5。

In one embodiment, above-mentioned at least one subsequent lens may include between the 3rd lens and image side Four lens, the image side surface of the 4th lens can be concave surface.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke；4th lens can have negative power.Wherein, take the photograph As effective pixel area diagonal line length half ImgH on lens imaging face and pick-up lens total effective focal length f can meet 1 ＜ ImgH/f ＜ 1.5.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, total effective focal length of the effective focal length f1 of the first lens and pick-up lens F can meet -3 ＜ f1/f ＜ -1.5.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, the effective half bore DT11 and the 4th lens picture of the first lens thing side Effective half bore DT42 of side can meet 1.3 ＜ DT11/DT42 ＜ 1.8.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, effective half bore DT11 of the first lens thing side and pick-up lens into Effective pixel area diagonal line length half ImgH can meet 1.2 ＜ DT11/ImgH ＜ 1.7 in image planes.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, the first lens and the second lens the spacing distance T12 and on optical axis Distance TTL of the one lens thing side to pick-up lens imaging surface on the optical axis can meet 0.1 ＜ T12/TTL ＜ 0.3.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, the spacing distance T23 of the second lens and the 3rd lens on optical axis with Distance TTL of the first lens thing side to pick-up lens imaging surface on optical axis can meet 0.1 ＜ T23*10/TTL ＜ 0.6.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, the effective half bore DT32 and the 4th lens thing of the 3rd lens image side surface Effective half bore DT41 of side can meet 0.9 ＜ DT32/DT41 ＜ 1.4.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, effective half bore DT42 of the 4th lens image side surface and pick-up lens into Effective pixel area diagonal line length half ImgH can meet 0.7 ＜ DT42/ImgH ＜ 1 in image planes.

On the other hand, present invention also provides such a pick-up lens, the pick-up lens is along optical axis by thing side to image side Sequentially include：First lens, the second lens, the 3rd lens and the 4th lens.First lens can have negative power；Second lens With positive light coke or negative power；3rd lens can have positive light coke, and its thing side is convex surface；4th lens have positive light Focal power or negative power, its image side surface are concave surface.Wherein, the image side surface of the 4th lens and the intersection point of optical axis are to the 4th lens image side Distance SAG42 between effective half bore summit in face on optical axis can expire with the 4th lens in the center thickness CT4 on optical axis 0 ＜ SAG42/CT4 ＜ 0.8 of foot.

By on the axle between each power of lens of reasonable distribution, face type, the center thickness of each lens and each lens Spacing etc. so that pick-up lens has miniaturization, large aperture, high brightness etc. at least one while good image quality is realized Individual beneficial effect

Brief description of the drawings

With reference to accompanying drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent Point will be apparent.In the accompanying drawings：

Fig. 1 shows the structural representation of the pick-up lens according to the embodiment of the present application 1；

Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axle of the pick-up lens of embodiment 1, astigmatism curve, ratio chromatism, Curve and relative illumination curve；

Fig. 3 shows the structural representation of the pick-up lens according to the embodiment of the present application 2；

Fig. 4 A to Fig. 4 D respectively illustrate chromatic curve on the axle of the pick-up lens of embodiment 2, astigmatism curve, ratio chromatism, Curve and relative illumination curve；

Fig. 5 shows the structural representation of the pick-up lens according to the embodiment of the present application 3；

Fig. 6 A to Fig. 6 D respectively illustrate chromatic curve on the axle of the pick-up lens of embodiment 3, astigmatism curve, ratio chromatism, Curve and relative illumination curve；

Fig. 7 shows the structural representation of the pick-up lens according to the embodiment of the present application 4；

Fig. 8 A to Fig. 8 D respectively illustrate chromatic curve on the axle of the pick-up lens of embodiment 4, astigmatism curve, ratio chromatism, Curve and relative illumination curve；

Fig. 9 shows the structural representation of the pick-up lens according to the embodiment of the present application 5；

Figure 10 A to Figure 10 D respectively illustrate chromatic curve on the axle of the pick-up lens of embodiment 5, astigmatism curve, multiplying power color Poor curve and relative illumination curve；

Figure 11 shows the structural representation of the pick-up lens according to the embodiment of the present application 6；

Figure 12 A to Figure 12 D respectively illustrate chromatic curve on the axle of the pick-up lens of embodiment 6, astigmatism curve, multiplying power color Poor curve and relative illumination curve.

Embodiment

In order to more fully understand the application, refer to the attached drawing is made into more detailed description to the various aspects of the application.Should Understand, these describe the description of the simply illustrative embodiments to the application in detail, rather than limit the application in any way Scope.In the specification, identical reference numbers identical element.Stating "and/or" includes associated institute Any and all combinations of one or more of list of items.

It should be noted that in this manual, the statement of first, second, third, etc. is only used for a feature and another spy Sign makes a distinction, and does not indicate that any restrictions to feature.Therefore, in the case of without departing substantially from teachings of the present application, hereinafter The first lens discussed are also known as the second lens or the 3rd lens.

In the accompanying drawings, for convenience of description, thickness, the size and dimension of lens are somewhat exaggerated.Specifically, accompanying drawing Shown in sphere or aspherical shape be illustrated by way of example.That is, sphere or aspherical shape is not limited to accompanying drawing In the sphere that shows or aspherical shape.Accompanying drawing is merely illustrative and and non-critical drawn to scale.

Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define the convex surface position When putting, then it represents that the lens surface is extremely convex surface less than near axis area；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is extremely concave surface less than near axis area.It is referred to as thing side near the surface of object in each lens, It is referred to as image side surface near the surface of imaging surface in each lens.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory Represent stated feature, element and/or part be present when being used in bright book, but do not preclude the presence or addition of one or more Further feature, element, part and/or combinations thereof.In addition, ought the statement of such as " ... at least one " appear in institute When after the list of row feature, whole listed feature, rather than the individual component in modification list are modified.In addition, work as description originally During the embodiment of application, represented " one or more embodiments of the application " using "available".Also, term " exemplary " It is intended to refer to example or illustration.

Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein be respectively provided with The application one skilled in the art's is generally understood that identical implication.It will also be appreciated that term (such as in everyday words Term defined in allusion quotation) implication consistent with their implications in the context of correlation technique should be interpreted as having, and It will not explained with idealization or excessively formal sense, unless clearly so limiting herein.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The feature of the application, principle and other aspects are described in detail below.

According to the pick-up lens of the application illustrative embodiments include such as four have focal power lens, i.e., first Lens, the second lens, the 3rd lens and the 4th lens.This four lens are along optical axis from thing side to image side sequential.This is taken the photograph As camera lens can also further comprise the photo-sensitive cell that is arranged at imaging surface.

First lens can have negative power；Second lens have positive light coke or negative power；3rd lens can have Positive light coke；4th lens have positive light coke or negative power.

Alternatively, the 4th lens can have negative power.

- 3 ＜ f1/f ＜ -1.5 can be met between the effective focal length f1 of first lens and total effective focal length f of pick-up lens, More specifically, f1 and f can further meet -2.62≤f1/f≤- 1.86.The power of lens of reasonable disposition first, can be effective Ground expands the angle of visual field of camera lens.

The spacing distance T12 and pick-up lens of first lens and the second lens on optical axis total optical length TTL are (i.e., Distance on the thing side of first lens to the axle of pick-up lens imaging surface) between can meet 0.1 ＜ T12/TTL ＜ 0.3, more specifically Ground, T12 and TTL can further meet 0.15≤T12/TTL≤0.22., can be in reality by the reasonable disposition to T12 and TTL Now while big wide-angle, the relative illumination and aperture effect of camera lens are lifted.

Between the spacing distance T23 and pick-up lens of second lens and the 3rd lens on optical axis total optical length TTL 0.1 ＜ T23*10/TTL ＜ 0.6 can be met, more specifically, T23 and TTL can further meet 0.28≤T23*10/TTL≤ 0.51.Reasonable disposition T23 and TTL, be advantageous to be lifted the resolving power of camera lens；Meanwhile also help and ensure camera lens with shorter Total optical length, realize the miniaturization of camera lens.

First lens are saturating in the center thickness CT2 and the 3rd on optical axis in the center thickness CT1 on optical axis, the second lens Mirror can meet 0.9 ＜ CT3/ (CT1+CT2) ＜ 1.5 between the center thickness CT3 on optical axis, more specifically, CT1, CT2 and CT3 can further meet 1.01≤CT3/ (CT1+CT2)≤1.49.The lens of reasonable disposition first, the second lens and the 3rd lens Center thickness, be advantageously implemented miniaturization effect.

The thing side of 3rd lens can be convex surface, and the image side surface of the 4th lens can be concave surface.The song of 3rd lens thing side 0.7 ＜ R5/R8 ＜ 1.2 can be met between the radius of curvature R 8 of rate radius R5 and the 4th lens image side surface, more specifically, R5 and R8 0.80≤R5/R8≤1.07 can further be met.The rationally radius of curvature in each face of the 3rd lens of control and the 4th each face of lens, has Beneficial to the correction of all kinds of aberrations, be advantageous to be lifted the image quality of camera lens.

Alternatively, at least one in the thing side and image side surface of the first lens is concave surface；The thing side of second lens It is convex surface with least one in image side surface；The thing side of 3rd lens can be convex surface, and image side surface can be convex surface；4th lens Thing side can be convex surface, image side surface can be concave surface.

Can between the effective half bore DT11 and the 4th lens image side surface of first lens thing side effective half bore DT42 Meet 1.3 ＜ DT11/DT42 ＜ 1.8, more specifically, DT11 and DT42 can further meet 1.42≤DT11/DT42≤1.69, Effect is minimized to realize.

Effective half bore DT11 of first lens thing side and effective pixel area diagonal line length on pick-up lens imaging surface Half ImgH between can meet 1.2 ＜ DT11/ImgH ＜ 1.7, more specifically, DT11 and ImgH can further meet 1.33≤ DT11/ImgH≤1.54, to realize miniaturization effect.

Effective half bore DT42 of 4th lens image side surface and effective pixel area diagonal line length on pick-up lens imaging surface Half ImgH between can meet 0.7 ＜ DT42/ImgH ＜ 1, more specifically, DT42 and ImgH can further meet 0.89≤ DT42/ImgH≤0.98, to lift the relative illumination of camera lens.

Can between effective half bore DT32 of 3rd lens image side surface and effective half bore DT41 of the 4th lens thing side Meet 0.9 ＜ DT32/DT41 ＜ 1.4, more specifically, DT32 and DT41 can further meet 1.00≤DT32/DT41≤1.33, To lift the resolving power of camera lens.

The image side surface of 4th lens and the intersection point of optical axis between effective half bore summit of the 4th lens image side surface in light Distance SAG42 and the 4th lens on axle can meet 0 ＜ SAG42/CT4 ＜ 0.8 in the center thickness CT4 on optical axis, more specifically Ground, SAG42 and CT4 can further meet 0.31≤SAG42/CT4≤0.64.Reasonable Arrangement SAG42 and CT4, are advantageous to reduce Distortion, lift the image quality of camera lens.

Total effective focal length f of the half ImgH of effective pixel area diagonal line length and pick-up lens on pick-up lens imaging surface Between can meet 1 ＜ ImgH/f ＜ 1.5, more specifically, ImgH and f can further meet 1.17≤ImgH/f≤1.34.

In the exemplary embodiment, pick-up lens is also provided with least one diaphragm, to lift the imaging of camera lens Quality.Diaphragm can be arranged as required to any position between thing side and image side.

Alternatively, above-mentioned pick-up lens may also include the optical filter for correcting color error ratio and/or be located at for protecting The protective glass of photo-sensitive cell on imaging surface.

Multi-disc eyeglass, such as described above four can be used according to the pick-up lens of the above-mentioned embodiment of the application. , can by spacing on the axle between each power of lens of reasonable distribution, face type, the center thickness of each lens and each lens etc. Effectively reduce the volume of camera lens, reduce the susceptibility of camera lens and improve the machinability of camera lens so that pick-up lens is more favourable In producing and processing and be applicable to portable type electronic product.Meanwhile by the pick-up lens of above-mentioned configuration, also have for example big The beneficial effects such as aperture, high brightness, high image quality, it can preferably be applied to the fields such as distance measurement.

In presently filed embodiment, at least one in the minute surface of each lens is aspherical mirror.Non-spherical lens The characteristics of be：From lens centre to lens perimeter, curvature is consecutive variations.It is constant with having from lens centre to lens perimeter The spherical lens of curvature is different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve picture The advantages of dissipating aberration.After non-spherical lens, the aberration occurred when imaging can be eliminated as much as possible, so as to improve Image quality.

However, it will be understood by those of skill in the art that without departing from this application claims technical scheme situation Under, the lens numbers for forming pick-up lens can be changed, to obtain each result and advantage described in this specification.Though for example, So it is described in embodiments by taking four lens as an example, but the pick-up lens is not limited to include four lens.If Need, pick-up lens may also include the lens of other quantity.

The specific embodiment for the pick-up lens for being applicable to above-mentioned embodiment is further described with reference to the accompanying drawings.

Embodiment 1

Pick-up lens referring to Fig. 1 to Fig. 2 D descriptions according to the embodiment of the present application 1.Fig. 1 is shown according to the application The structural representation of the pick-up lens of embodiment 1.

As shown in figure 1, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

First lens L1 has negative power, and its thing side S1 is concave surface, and image side surface S2 is concave surface, and the first lens L1 Thing side S1 and image side surface S2 is aspherical.

Second lens L2 has positive light coke, and its thing side S3 is concave surface, and image side surface S4 is convex surface, and the second lens L2 Thing side S3 and image side surface S4 is aspherical.

3rd lens L3 has positive light coke, and its thing side S5 is convex surface, and image side surface S6 is convex surface, and the 3rd lens L3 Thing side S5 and image side surface S6 is aspherical.

4th lens L4 has negative power, and its thing side S7 is convex surface, and image side surface S8 is concave surface, and the 4th lens L4 Thing side S7 and image side surface S8 is aspherical.

Alternatively, pick-up lens may also include the optical filter L5 with thing side S9 and image side surface S10.Light from object Sequentially pass through each surface S1 to S10 and be ultimately imaged on imaging surface S11.

Alternatively, diaphragm STO can be set between the first lens L1 and the second lens L2, to lift image quality.

Table 1 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of the pick-up lens of embodiment 1 Coefficient, wherein, the unit of radius of curvature and thickness is millimeter (mm).

Table 1

It can be obtained by table 1, the 3rd lens L3 things side S5 lens L4 of radius of curvature R 5 and the 4th image side surface S8 curvature Meet R5/R8=1.03 between radius R8；First lens L1 is in the center thickness CT1 on optical axis, the second lens L2 on optical axis Center thickness CT2 and the 3rd lens L3 meet CT3/ (CT1+CT2)=1.24 in the center thickness CT3 on optical axis.

In embodiment 1, each lens can use non-spherical lens, and each aspherical face type x is limited by below equation：

Wherein, x be it is aspherical along optical axis direction when being highly h position, away from aspheric vertex of surface apart from rise；C is Aspherical paraxial curvature, c=1/R (that is, paraxial curvature c is the mean curvature radius R of upper table 1 inverse)；K be circular cone coefficient ( Provided in table 1)；Ai is the correction factor of aspherical i-th-th ranks.Table 2 below is given available for each aspherical in embodiment 1 Minute surface S1-S8 high order term coefficient A₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

Face number

A4

A6

A8

A10

A12

A14

A16

S1

3.0642E-02

-7.2951E-03

1.2109E-03

-1.2987E-04

8.2620E-06

-2.7182E-07

3.1667E-09

S2

1.1256E-01

-7.4553E-02

1.1962E-01

-1.1722E-01

6.4425E-02

-1.7817E-02

1.8859E-03

S3

-9.6298E-02

3.2387E-01

-1.1075E+00

2.0286E+00

-2.1221E+00

1.1737E+00

-2.6935E-01

S4

-1.4363E-01

1.1071E-01

-1.1036E-01

7.7104E-02

-3.4727E-02

8.7770E-03

-9.6168E-04

S5

8.5990E-03

-7.0148E-04

-1.1257E-03

5.2453E-04

-1.1488E-04

1.3396E-05

-6.6236E-07

S6

8.6813E-03

-3.2359E-03

-2.5427E-03

1.2039E-03

-2.2194E-04

2.0108E-05

-7.5337E-07

S7

-7.4705E-03

-4.1334E-03

-6.6334E-04

-1.7190E-05

-3.6760E-06

2.0842E-05

-3.0230E-06

S8

-1.5401E-02

1.3561E-02

-8.0973E-03

2.1632E-03

-2.8327E-04

1.6408E-05

-2.8401E-07

Table 2

Table 3 below provides total effective focal length f of pick-up lens, effective focal length f1 to f4, the camera lens of each lens in embodiment 1 Head optics total length TTL (that is, from distance on the first lens L1 thing side S1 center to imaging surface S11 axle) and take the photograph As the half ImgH of effective pixel area diagonal line length on the S11 of lens imaging face.

Table 3

The spacing distance T12 and pick-up lens of first lens L1 and the second lens L2 on optical axis optics total length TTL Between meet T12/TTL=0.15；Spacing distance T23s and pick-up lens of the second lens L2 and the 3rd lens L3 on optical axis Meet T23*10/TTL=0.37 between optics total length TTL；First lens L1 effective focal length f1 and always having for pick-up lens Meet f1/f=-2.11 between effect focal length f；The half ImgH of effective pixel area diagonal line length on pick-up lens imaging surface S11 Meet ImgH/f=1.26 between total effective focal length f of pick-up lens.

In embodiment 1, the first lens L1 things side S1 effective half bore DT11 and the 4th lens L4 image side surfaces S8 Meet DT11/DT42=1.43 between effective half bore DT42；First lens L1 things side S1 effective half bore DT11 is with taking the photograph As meeting DT11/ImgH=1.33 between the half ImgH of effective pixel area diagonal line length on the S11 of lens imaging face；4th is saturating The half of effective pixel area diagonal line length on mirror L4 image side surfaces S8 effective half bore DT42 and pick-up lens imaging surface S11 Meet DT42/ImgH=0.93 between ImgH；3rd lens L3 image side surfaces S6 effective half bore DT32 and the 4th lens L4 things Meet DT32/DT41=1.33 between side S7 effective half bore DT41；4th lens L4 image side surfaces S8 and optical axis intersection point Distance SAG42 and the 4th lens L4 is in the center on optical axis on to the axle on the 4th lens L4 image side surfaces S8 effective half bore summit Thickness CT4 meets SAG42/CT4=0.43.

Fig. 2A shows chromatic curve on the axle of the pick-up lens of embodiment 1, and it represents the light of different wave length via mirror Converging focal point after head deviates.Fig. 2 B show the astigmatism curve of the pick-up lens of embodiment 1, its represent meridianal image surface bending and Sagittal image surface is bent.Fig. 2 C show the ratio chromatism, curve of the pick-up lens of embodiment 1, its represent light via after camera lens The deviation of different image heights on imaging surface.Fig. 2 D show the relative illumination curve of the pick-up lens of embodiment 1, and it is represented not With the relative illumination corresponding to the angle of visual field.Understand that the pick-up lens given by embodiment 1 can be realized good according to Fig. 2A to Fig. 2 D Good image quality.

Embodiment 2

Pick-up lens referring to Fig. 3 to Fig. 4 D descriptions according to the embodiment of the present application 2.In the present embodiment and following implementation In example, for brevity, by clipped description similar to Example 1.Fig. 3 shows taking the photograph according to the embodiment of the present application 2 As the structural representation of camera lens.

As shown in figure 3, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

Second lens L2 has positive light coke, and its thing side S3 is convex surface, and image side surface S4 is convex surface, and the second lens L2 Thing side S3 and image side surface S4 is aspherical.

Table 4 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of the pick-up lens of embodiment 2 Coefficient, wherein, the unit of radius of curvature and thickness is millimeter (mm).Table 5 is shown available for each aspherical mirror in embodiment 2 The high order term coefficient in face, wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Table 6 is shown The optics total length TTL of total effective focal length f of pick-up lens, the effective focal length f1 to f4 of each lens, pick-up lens in embodiment 2 And on pick-up lens imaging surface S11 effective pixel area diagonal line length half ImgH.

Table 4

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.2289E-02

-4.2682E-03

5.2154E-04

-3.2167E-05

-6.5861E-09

1.0613E-07

-3.8767E-09

S2

8.3413E-02

-4.6106E-02

6.1582E-02

-4.9594E-02

2.2677E-02

-5.1310E-03

4.3856E-04

S3

-7.7210E-02

2.2969E-01

-6.3031E-01

9.5376E-01

-8.3010E-01

3.8396E-01

-7.3574E-02

S4

-1.0983E-01

6.3218E-02

-5.1160E-02

2.9146E-02

-1.0614E-02

2.1446E-03

-1.8642E-04

S5

6.3913E-03

7.3420E-04

-1.6498E-03

6.9869E-04

-1.5284E-04

1.7182E-05

-7.5579E-07

S6

7.3652E-03

-4.1759E-03

3.8963E-04

-1.5330E-04

6.4190E-05

-1.0426E-05

6.1475E-07

S7

2.6001E-05

-1.1399E-02

4.9366E-03

-1.7443E-03

3.3698E-04

-3.2219E-05

1.2035E-06

S8

-2.1226E-02

1.1221E-02

-3.7164E-03

7.4355E-04

-8.1779E-05

3.3695E-06

1.1787E-08

Table 5

Table 6

Fig. 4 A show chromatic curve on the axle of the pick-up lens of embodiment 2, and it represents the light of different wave length via mirror Converging focal point after head deviates.Fig. 4 B show the astigmatism curve of the pick-up lens of embodiment 2, its represent meridianal image surface bending and Sagittal image surface is bent.Fig. 4 C show the ratio chromatism, curve of the pick-up lens of embodiment 2, its represent light via after camera lens The deviation of different image heights on imaging surface.Fig. 4 D show the relative illumination curve of the pick-up lens of embodiment 2, and it is represented not With the relative illumination corresponding to the angle of visual field.Understand that the pick-up lens given by embodiment 2 can be realized good according to Fig. 4 A to Fig. 4 D Good image quality.

Embodiment 3

The pick-up lens according to the embodiment of the present application 3 is described referring to Fig. 5 to Fig. 6 D.Fig. 5 is shown according to this Shen Please embodiment 3 pick-up lens structural representation.

As shown in figure 5, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

Second lens L2 has negative power, and its thing side S3 is concave surface, and image side surface S4 is convex surface, and the second lens L2 Thing side S3 and image side surface S4 is aspherical.

Table 7 shows surface type, radius of curvature, thickness, material and the circular cone of each lens of the pick-up lens of embodiment 3 Coefficient, wherein, the unit of radius of curvature and thickness is millimeter (mm).Table 8 is shown available for each aspherical mirror in embodiment 3 The high order term coefficient in face, wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Table 9 is shown The optics total length TTL of total effective focal length f of pick-up lens, the effective focal length f1 to f4 of each lens, pick-up lens in embodiment 3 And on pick-up lens imaging surface S11 effective pixel area diagonal line length half ImgH.

Table 7

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.1698E-02

-4.8541E-03

8.0127E-04

-8.3661E-05

4.8322E-06

-1.2574E-07

6.0448E-10

S2

5.4816E-02

-4.6444E-02

6.1798E-02

-4.9551E-02

2.2696E-02

-5.1364E-03

4.2446E-04

S3

-6.3615E-02

1.1774E-01

-3.1590E-01

4.3047E-01

-3.3423E-01

1.3046E-01

-1.9150E-02

S4

-1.0435E-01

4.3045E-02

-2.6015E-02

4.6346E-03

3.1642E-03

-2.0783E-03

3.5438E-04

S5

6.3587E-03

2.1999E-03

-2.5964E-03

1.0024E-03

-2.1783E-04

2.6311E-05

-1.2972E-06

S6

2.8861E-03

-6.1943E-03

6.0177E-03

-3.2723E-03

8.4682E-04

-1.0625E-04

5.3215E-06

S7

7.3554E-03

-1.4720E-02

6.8602E-03

-1.9286E-03

1.3716E-04

2.3213E-05

-2.8750E-06

S8

-1.4432E-02

1.6791E-03

4.2821E-03

-2.7722E-03

7.1596E-04

-8.6196E-05

3.9515E-06

Table 8

Table 9

Fig. 6 A show chromatic curve on the axle of the pick-up lens of embodiment 3, and it represents the light of different wave length via mirror Converging focal point after head deviates.Fig. 6 B show the astigmatism curve of the pick-up lens of embodiment 3, its represent meridianal image surface bending and Sagittal image surface is bent.Fig. 6 C show the ratio chromatism, curve of the pick-up lens of embodiment 3, its represent light via after camera lens The deviation of different image heights on imaging surface.Fig. 6 D show the relative illumination curve of the pick-up lens of embodiment 3, and it is represented not With the relative illumination corresponding to the angle of visual field.Understand that the pick-up lens given by embodiment 3 can be realized good according to Fig. 6 A to Fig. 6 D Good image quality.

Embodiment 4

The pick-up lens according to the embodiment of the present application 4 is described referring to Fig. 7 to Fig. 8 D.Fig. 7 is shown according to this Shen Please embodiment 4 pick-up lens structural representation.

As shown in fig. 7, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

First lens L1 has negative power, and its thing side S1 is convex surface, and image side surface S2 is concave surface, and the first lens L1 Thing side S1 and image side surface S2 is aspherical.

Table 10 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens of embodiment 4 Coefficient is bored, wherein, the unit of radius of curvature and thickness is millimeter (mm).Table 11 is shown available for each aspheric in embodiment 4 The high order term coefficient of face minute surface, wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Table 12 shows The optics overall length of total effective focal length f of pick-up lens in embodiment 4, the effective focal length f1 to f4 of each lens, pick-up lens is gone out Spend the half ImgH of effective pixel area diagonal line length on TTL and pick-up lens imaging surface S11.

Table 10

Face number

A4

A6

A8

A10

A12

A14

A16

S1

5.3925E-03

1.3960E-04

-2.1237E-04

4.3406E-05

-4.3647E-06

2.2423E-07

-4.7155E-09

S2

-6.3116E-04

2.9146E-02

-4.7154E-02

4.8565E-02

-2.8868E-02

9.0888E-03

-1.1811E-03

S3

-1.0530E-01

3.6547E-01

-1.1996E+00

2.1243E+00

-2.1431E+00

1.1400E+00

-2.4991E-01

S4

-1.5961E-01

1.1440E-01

-1.1717E-01

8.3431E-02

-3.8259E-02

9.8471E-03

-1.0958E-03

S5

1.2268E-02

-9.1803E-03

3.7129E-03

-1.5761E-03

4.4957E-04

-6.1599E-05

3.1724E-06

S6

5.0505E-03

-2.7187E-03

-3.7048E-03

1.8038E-03

-3.6432E-04

3.8496E-05

-1.7088E-06

S7

-1.2627E-04

-1.0610E-02

3.1536E-03

-2.0136E-03

6.3007E-04

-6.8055E-05

9.4689E-07

S8

1.9575E-03

7.6049E-04

-1.7800E-03

2.6516E-05

1.5704E-04

-3.2119E-05

1.8879E-06

Table 11

Table 12

Fig. 8 A show chromatic curve on the axle of the pick-up lens of embodiment 4, and it represents the light of different wave length via mirror Converging focal point after head deviates.Fig. 8 B show the astigmatism curve of the pick-up lens of embodiment 4, its represent meridianal image surface bending and Sagittal image surface is bent.Fig. 8 C show the ratio chromatism, curve of the pick-up lens of embodiment 4, its represent light via after camera lens The deviation of different image heights on imaging surface.Fig. 8 D show the relative illumination curve of the pick-up lens of embodiment 4, and it is represented not With the relative illumination corresponding to the angle of visual field.Understand that the pick-up lens given by embodiment 4 can be realized good according to Fig. 8 A to Fig. 8 D Good image quality.

Embodiment 5

The pick-up lens according to the embodiment of the present application 5 is described referring to Fig. 9 to Figure 10 D.Fig. 9 is shown according to this Shen Please embodiment 5 pick-up lens structural representation.

As shown in figure 9, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

Table 13 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens of embodiment 5 Coefficient is bored, wherein, the unit of radius of curvature and thickness is millimeter (mm).Table 14 is shown available for each aspheric in embodiment 5 The high order term coefficient of face minute surface, wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Table 15 shows The optics overall length of total effective focal length f of pick-up lens in embodiment 5, the effective focal length f1 to f4 of each lens, pick-up lens is gone out Spend the half ImgH of effective pixel area diagonal line length on TTL and pick-up lens imaging surface S11.

Table 13

Table 14

Table 15

Figure 10 A show chromatic curve on the axle of the pick-up lens of embodiment 5, and it represents the light of different wave length via mirror Converging focal point after head deviates.Figure 10 B show the astigmatism curve of the pick-up lens of embodiment 5, and it represents meridianal image surface bending Bent with sagittal image surface.Figure 10 C show the ratio chromatism, curve of the pick-up lens of embodiment 5, and it represents light via camera lens The deviation of different image heights on imaging surface afterwards.Figure 10 D show the relative illumination curve of the pick-up lens of embodiment 5, its Represent the relative illumination corresponding to the different angles of visual field.Understood according to Figure 10 A to Figure 10 D, the pick-up lens energy given by embodiment 5 Enough realize good image quality.

Embodiment 6

The pick-up lens according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.Figure 11 is shown according to this Apply for the structural representation of the pick-up lens of embodiment 6.

As shown in figure 11, pick-up lens along optical axis by thing side into image side sequentially include the first lens L1, the second lens L2, 3rd lens L3, the 4th lens L4 and imaging surface S11.Pick-up lens may also include the photo-sensitive cell for being arranged at imaging surface S11.

Alternatively, diaphragm STO can be set between the second lens L2 and the 3rd lens L3, to lift image quality.

Table 16 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens of embodiment 6 Coefficient is bored, wherein, the unit of radius of curvature and thickness is millimeter (mm).Table 17 is shown available for each aspheric in embodiment 6 The high order term coefficient of face minute surface, wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.Table 18 shows The optics overall length of total effective focal length f of pick-up lens in embodiment 6, the effective focal length f1 to f4 of each lens, pick-up lens is gone out Spend the half ImgH of effective pixel area diagonal line length on TTL and pick-up lens imaging surface S11.

Table 16

Table 17

Table 18

Figure 12 A show chromatic curve on the axle of the pick-up lens of embodiment 6, and it represents the light of different wave length via mirror Converging focal point after head deviates.Figure 12 B show the astigmatism curve of the pick-up lens of embodiment 6, and it represents meridianal image surface bending Bent with sagittal image surface.Figure 12 C show the ratio chromatism, curve of the pick-up lens of embodiment 6, and it represents light via camera lens The deviation of different image heights on imaging surface afterwards.Figure 12 D show the relative illumination curve of the pick-up lens of embodiment 6, its Represent the relative illumination corresponding to the different angles of visual field.Understood according to Figure 12 A to Figure 12 D, the pick-up lens energy given by embodiment 6 Enough realize good image quality.

To sum up, embodiment 1 to embodiment 6 meets the relation shown in table 19 below respectively.

Conditional embodiment	1	2	3	4	5	6
							f1/f	-2.11	-2.16	-2.21	-1.86	-2.14	-2.62
R5/R8	1.03	0.94	1.00	0.80	1.07	1.03
							CT3/(CT1+CT2)	1.24	1.04	1.49	1.04	1.01	1.26
DT11/DT42	1.43	1.55	1.50	1.42	1.66	1.69
							DT11/ImgH	1.33	1.39	1.38	1.39	1.49	1.54
T12/TTL	0.15	0.19	0.21	0.19	0.22	0.17
							T23*10/TTL	0.37	0.28	0.28	0.30	0.30	0.51
DT32/DT41	1.33	1.07	1.08	1.05	1.11	1.00
							DT42/ImgH	0.93	0.90	0.91	0.98	0.89	0.91
SAG42/CT4	0.43	0.41	0.41	0.31	0.64	0.46
							ImgH/f	1.26	1.26	1.25	1.34	1.26	1.17

Table 19

The application also provides a kind of camera device, and its electronics photo-sensitive cell can be photosensitive coupling element (CCD) or complementation Property matal-oxide semiconductor element (CMOS).Camera device can be such as digital camera independent picture pick-up device or The photographing module being integrated on the mobile electronic devices such as mobile phone, tablet personal computer.The camera device is equipped with described above Pick-up lens.

Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein The technical scheme that the technical characteristic of energy is replaced mutually and formed.

Claims

1. pick-up lens, sequentially included by thing side to image side along optical axis：First lens, the second lens, the 3rd lens and the 4th are saturating Mirror, it is characterised in that

First lens have negative power；

3rd lens have positive light coke；

Second lens and the 4th lens are respectively provided with focal power；

The thing side of 3rd lens is convex surface, and the image side surface of the 4th lens is concave surface, the 3rd lens thing side The radius of curvature R 8 of radius of curvature R 5 and the 4th lens image side surface meet 0.7 ＜ R5/R8 ＜ 1.2.

2. pick-up lens according to claim 1, it is characterised in that the effective focal length f1 of first lens takes the photograph with described As total effective focal length f of camera lens meets -3 ＜ f1/f ＜ -1.5.

3. pick-up lens according to claim 1, it is characterised in that first lens are thick in the center on the optical axis CT1, second lens are spent in the center thickness CT2 on the optical axis and the 3rd lens in the center on the optical axis Thickness CT3 meets 0.9 ＜ CT3/ (CT1+CT2) ＜ 1.5.

4. pick-up lens according to claim 1, it is characterised in that first lens and second lens are described Spacing distance T12 and distance of the first lens thing side to the pick-up lens imaging surface on the optical axis on optical axis TTL meets 0.1 ＜ T12/TTL ＜ 0.3.

5. pick-up lens according to claim 1, it is characterised in that second lens and the 3rd lens are described Spacing distance T23 and distance of the first lens thing side to the pick-up lens imaging surface on the optical axis on optical axis TTL meets 0.1 ＜ T23*10/TTL ＜ 0.6.

6. pick-up lens according to any one of claim 1 to 5, it is characterised in that on the pick-up lens imaging surface Effective pixel area diagonal line length half ImgH and the pick-up lens total effective focal length f meet 1 ＜ ImgH/f ＜ 1.5.

7. pick-up lens according to claim 1, it is characterised in that effective half bore of the first lens thing side DT11 and the 4th lens image side surface effective half bore DT42 meet 1.3 ＜ DT11/DT42 ＜ 1.8.

8. the pick-up lens according to claim 1 or 7, it is characterised in that effective half mouthful of the first lens thing side Footpath DT11 meets 1.2 ＜ DT11/ImgH ＜ with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface 1.7。

9. the pick-up lens according to claim 1 or 7, it is characterised in that effective half mouthful of the 4th lens image side surface Footpath DT42 meets 0.7 ＜ DT42/ImgH ＜ with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface 1。

10. pick-up lens according to claim 1, it is characterised in that effective half bore of the 3rd lens image side surface DT32 and effective half bore DT41 of the 4th lens thing side meet 0.9 ＜ DT32/DT41 ＜ 1.4.

11. pick-up lens according to claim 1, it is characterised in that the image side surface and the optical axis of the 4th lens Intersection point to the distance SAG42 between effective half bore summit of the 4th lens image side surface on the optical axis and described the Four lens meet 0 ＜ SAG42/CT4 ＜ 0.8 in the center thickness CT4 on the optical axis.

12. pick-up lens, sequentially included by thing side to image side along optical axis：First lens, the second lens, the 3rd lens and at least one Individual subsequent lens, it is characterised in that

At least one in the thing side and image side surface of first lens is concave surface；

At least one in the thing side and image side surface of second lens is convex surface；

The thing side of 3rd lens and image side surface are convex surface,

Wherein, first lens in the center thickness CT1 on the optical axis, second lens in the center on the optical axis Thickness CT2 and the 3rd lens meet 0.9 ＜ CT3/ (CT1+CT2) ＜ 1.5 in the center thickness CT3 on the optical axis.

13. pick-up lens according to claim 12, it is characterised in that first lens have negative power, and it has The total effective focal length f for imitating focal length f1 and the pick-up lens meets -3 ＜ f1/f ＜ -1.5.

14. pick-up lens according to claim 12, it is characterised in that first lens and second lens are in institute State spacing distance T12 and distance of the first lens thing side to the pick-up lens imaging surface on the optical axis on optical axis TTL meets 0.1 ＜ T12/TTL ＜ 0.3.

15. pick-up lens according to claim 12, it is characterised in that second lens and the 3rd lens are in institute State spacing distance T23 on optical axis and the first lens thing side to the pick-up lens imaging surface on the optical axis away from Meet 0.1 ＜ T23*10/TTL ＜ 0.6 from TTL.

16. pick-up lens according to claim 12, it is characterised in that at least one subsequent lens include being located at institute The 4th lens between the 3rd lens and the image side are stated, the image side surface of the 4th lens is concave surface.

17. pick-up lens according to claim 16, it is characterised in that the radius of curvature R 5 of the 3rd lens thing side Meet 0.7 ＜ R5/R8 ＜ 1.2 with the radius of curvature R 8 of the 4th lens image side surface.

18. pick-up lens according to claim 16, it is characterised in that effective half bore of the first lens thing side DT11 and the 4th lens image side surface effective half bore DT42 meet 1.3 ＜ DT11/DT42 ＜ 1.8.

19. pick-up lens according to claim 18, it is characterised in that effective half bore of the first lens thing side DT11 meets 1.2 ＜ DT11/ImgH ＜ with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface 1.7。

20. pick-up lens according to claim 18, it is characterised in that effective half bore of the 4th lens image side surface DT42 meets 0.7 ＜ DT42/ImgH ＜ 1 with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface.

21. pick-up lens according to claim 16, it is characterised in that effective half bore of the 3rd lens image side surface DT32 and effective half bore DT41 of the 4th lens thing side meet 0.9 ＜ DT32/DT41 ＜ 1.4.

22. pick-up lens according to claim 16, it is characterised in that the image side surface and the optical axis of the 4th lens Intersection point to the distance SAG42 between effective half bore summit of the 4th lens image side surface on the optical axis and described the Four lens meet 0 ＜ SAG42/CT4 ＜ 0.8 in the center thickness CT4 on the optical axis.

23. the pick-up lens according to any one of claim 12 to 22, it is characterised in that the pick-up lens imaging surface Upper effective pixel area diagonal line length half ImgH and the pick-up lens total effective focal length f meet 1 ＜ ImgH/f ＜ 1.5.

24. pick-up lens, sequentially included by thing side to image side along optical axis：First lens, the second lens, the 3rd lens and the 4th are saturating Mirror, it is characterised in that

First lens have negative power；

Second lens have positive light coke or negative power；

3rd lens have positive light coke；

4th lens have negative power；

Effective pixel area diagonal line length half ImgH and the pick-up lens total effectively Jiao on the pick-up lens imaging surface Meet 1 ＜ ImgH/f ＜ 1.5 away from f.

25. pick-up lens according to claim 24, it is characterised in that the thing side of the 3rd lens is convex surface, institute The image side surface for stating the 4th lens is concave surface.

26. pick-up lens according to claim 25, it is characterised in that the radius of curvature R 5 of the 3rd lens thing side and institute The radius of curvature R 8 for stating the 4th lens image side surface meets 0.7 ＜ R5/R8 ＜ 1.2.

27. pick-up lens according to claim 24, it is characterised in that effective half bore of the first lens thing side DT11 meets 1.2 ＜ DT11/ImgH ＜ with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface 1.7。

28. the pick-up lens according to claim 24 or 27, it is characterised in that effectively the half of the 4th lens image side surface Bore DT42 meets 0.7 ＜ DT42/ImgH with effective pixel area diagonal line length half ImgH on the pick-up lens imaging surface ＜ 1.

29. pick-up lens according to claim 28, it is characterised in that effective half bore of the first lens thing side DT11 and the 4th lens image side surface effective half bore DT42 meet 1.3 ＜ DT11/DT42 ＜ 1.8.

30. pick-up lens according to claim 24, it is characterised in that effective half bore of the 3rd lens image side surface DT32 and effective half bore DT41 of the 4th lens thing side meet 0.9 ＜ DT32/DT41 ＜ 1.4.

31. pick-up lens according to claim 25, it is characterised in that the image side surface and the optical axis of the 4th lens Intersection point to the distance SAG42 between effective half bore summit of the 4th lens image side surface on the optical axis and described the Four lens meet 0 ＜ SAG42/CT4 ＜ 0.8 in the center thickness CT4 on the optical axis.

32. pick-up lens according to claim 24, it is characterised in that first lens have negative power, and it has The total effective focal length f for imitating focal length f1 and the pick-up lens meets -3 ＜ f1/f ＜ -1.5.

33. the pick-up lens according to claim 24 or 32, it is characterised in that first lens and second lens On the optical axis spacing distance T12 and the first lens thing side to the pick-up lens imaging surface on the optical axis Distance TTL meets 0.1 ＜ T12/TTL ＜ 0.3.

34. pick-up lens according to claim 33, it is characterised in that second lens and the 3rd lens are in institute State spacing distance T23 on optical axis and the first lens thing side to the pick-up lens imaging surface on the optical axis away from Meet 0.1 ＜ T23*10/TTL ＜ 0.6 from TTL.

35. pick-up lens according to claim 33, it is characterised in that first lens are in the center on the optical axis Thickness CT1, second lens are in the center thickness CT2 on the optical axis and the 3rd lens on the optical axis Heart thickness CT3 meets 0.9 ＜ CT3/ (CT1+CT2) ＜ 1.5.