CN209327663U

CN209327663U - Optical imaging lens

Info

Publication number: CN209327663U
Application number: CN201822200156.0U
Authority: CN
Inventors: 王新权; 谢检来; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2019-08-30
Anticipated expiration: 2028-12-26

Abstract

This application discloses a kind of optical imaging lens, which sequentially includes: the first lens, the second lens and the third lens by object side to image side along optical axis.Wherein, the first lens have positive light coke, and image side surface is concave surface；Second lens have positive light coke, and object side is concave surface；The third lens have negative power；First lens all have airspace between each adjacent lens into the third lens；And total effective focal length f of optical imaging lens and the Entry pupil diameters EPD of optical imaging lens meet f/EPD < 1.4.

Description

Optical imaging lens

Technical field

This application involves a kind of optical imaging lens, more specifically, this application involves a kind of optics including three pieces lens Imaging lens.

Background technique

As the development of the portable electronic products such as mobile phone, tablet computer is universal, people to its performance, thickness requirement not Also require the pick-up lens entrained by it that there is miniaturization feature to adapt to the trend toward miniaturization of electronic product while disconnected raising. The F-number (F number) of existing miniaturization pick-up lens is usually larger, and light-inletting quantity is less than normal, is unable to satisfy core in infrared light work Piece quantum efficiency (Quantum Efficiency, QE) relatively low requirement to the big light-inletting quantity of camera lens.Therefore, it is urgent to provide a kind of big Aperture, miniaturization, high image quality pick-up lens with meet miniaturization camera the fields such as infrared light detecting, identification application Demand.

Utility model content

This application provides be applicable to portable electronic product, can at least solve or part solve it is in the prior art The optical imaging lens of at least one above-mentioned disadvantage.

On the one hand, this application provides such a optical imaging lens, the camera lens along optical axis by object side to image side according to Sequence includes: the first lens, the second lens and the third lens.Wherein, the first lens can have positive light coke, and image side surface can be recessed Face；Second lens can have positive light coke, and object side can be concave surface；The third lens can have negative power；First lens are extremely Can have airspace in the third lens between each adjacent lens.Wherein, the total effective focal length f and optics of optical imaging lens The Entry pupil diameters EPD of imaging lens can meet f/EPD < 1.4.

In one embodiment, the effective focal length f1 and second of total effective focal length f of optical imaging lens, the first lens The effective focal length f2 of lens can meet 2.5 < f1/f+f2/f < 3.5.

In one embodiment, the combination of total the effective focal length f and the second lens and the third lens of optical imaging lens Focal length f23 can meet 0.5 < f/f23 < 1.0.

In one embodiment, the curvature of the image side surface of the radius of curvature R 1 and the first lens of the object side of the first lens Radius R2 can meet 0 < | R1/R2 | < 0.5.

In one embodiment, the radius of curvature R 3 of the object side of the second lens and the effective focal length f3 of the third lens can Meet 0 < R3/f3 < 1.3.

In one embodiment, the image side surface of maximum the effective radius DT11 and the third lens of the object side of the first lens Maximum effective radius DT32 can meet 0.3 < DT11/DT32 < 1.2.

In one embodiment, center thickness CT1, second lens center on optical axis of first lens on optical axis The summation ∑ CT of thickness CT2 and the first lens to the third lens center thickness on optical axis respectively can meet 0.5 < (CT1+ CT2)/∑ CT < 1.0.

In one embodiment, optical imaging lens further include diaphragm, and the imaging surface of diaphragm to optical imaging lens exists The imaging surface of distance SL on optical axis and the object side of the first lens to optical imaging lens distance TTL on optical axis can meet 0.6 < SL/TTL < 1.2.

In one embodiment, the airspace T12 and the first lens of the first lens and the second lens on optical axis be extremely The summation ∑ AT of airspace of two lens of arbitrary neighborhood on optical axis can meet 0.2 < T12/ ∑ AT < 1 in the third lens.

In one embodiment, the object side of the first lens to optical imaging lens distance of the imaging surface on optical axis The half ImgH of effective pixel area diagonal line length can meet 0.7 < (TTL/ on the imaging surface of TTL and optical imaging lens ImgH)/2 < 1.2.

On the other hand, this application provides such a optical imaging lens, and the camera lens is along optical axis by object side to image side It sequentially include: the first lens, the second lens and the third lens.Wherein, the first lens can have positive light coke, and image side surface can be Concave surface；Second lens can have positive light coke, and object side can be concave surface；The third lens can have negative power；First lens Can have airspace between each adjacent lens into the third lens.Wherein, the maximum of the object side of the first lens effectively half The maximum effective radius DT32 of diameter DT11 and the image side surface of the third lens can meet 0.3 < DT11/DT32 < 1.2.

The application use three pieces lens, each power of lens of reasonable distribution, face type, each lens center thickness and Spacing etc. on axis between each lens, so that above-mentioned optical imaging lens have large aperture, miniaturization, high image quality etc. at least One beneficial effect.

Detailed description of the invention

In conjunction with attached 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 schematic diagram of the optical imaging lens according to the embodiment of the present application 1；

Fig. 2A to Fig. 2 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 1, astigmatism curve and Distortion curve；

Fig. 3 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 2；

Fig. 4 A to Fig. 4 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 2, astigmatism curve and Distortion curve；

Fig. 5 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 3；

Fig. 6 A to Fig. 6 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 3, astigmatism curve and Distortion curve；

Fig. 7 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 4；

Fig. 8 A to Fig. 8 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 4, astigmatism curve and Distortion curve；

Fig. 9 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 5；

Figure 10 A to Figure 10 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 5, astigmatism curve with And distortion curve；

Figure 11 shows the structural schematic diagram of the optical imaging lens according to the embodiment of the present application 6；

Figure 12 A to figure 12 C respectively illustrate chromatic curve on the axis of the optical imaging lens of embodiment 6, astigmatism curve with And distortion curve.

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, first, second, third, etc. statement is only used for a feature and another spy Sign distinguishes, without indicating any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter The first lens discussed are also known as the second lens or the third lens.

In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing Shown in spherical surface or aspherical shape.Attached 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 convex surface position When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is concave surface near axis area is less than.Each lens are known as the lens near the surface of object Object side, each lens are known as the image side surface of the lens near the surface of imaging surface.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory It indicates there is stated feature, element and/or component when using in bright book, but does not preclude the presence or addition of one or more Other feature, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in institute When after the list of column feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative " It is intended to refer to example or illustration.

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.

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

Optical imaging lens according to the application illustrative embodiments may include the lens that such as three pieces have focal power, That is, the first lens, the second lens and the third lens.This three pieces lens is along optical axis by object side to image side sequential.

In the exemplary embodiment, the first lens can have positive light coke, and image side surface can be concave surface；Second lens can With positive light coke, object side can be concave surface；The third lens can have negative power.In the first lens into the third lens, Can have airspace between each adjacent lens.First lens are arranged to positive light coke and its image side surface is concave surface, And the second lens are arranged to positive light coke and its object side is concave surface, facilitate correction system spherical aberration, reduces tolerance spirit Sensitivity；The third lens are arranged to be conducive to balance system aberration with negative power, and are conducive to shortening system overall length with reality The miniaturization of existing camera lens；Make to all have airspace between each adjacent lens, is conducive to the assembling of camera lens, and can reduce and be fabricated to This.

In the exemplary embodiment, the object side of the first lens is convex surface.

In the exemplary embodiment, the image side surface of the second lens is convex surface.

In the exemplary embodiment, the optical imaging lens of the application can meet conditional f/EPD < 1.4, wherein f For total effective focal length of optical imaging lens, EPD is the Entry pupil diameters of optical imaging lens.More specifically, f and EPD are further 0.8 < f/EPD < 1.3, such as 0.98≤f/EPD≤1.21 can be met.Meet conditional f/EPD < 1.4, is conducive to shorten mirror Head overall length, makes more compact structure, while can also increase the light-inletting quantity of system, improves the image quality of image space sensitive chip, reduces Influence of the dark current to imaging.

In the exemplary embodiment, the optical imaging lens of the application can meet 2.5 < f1/f+f2/f < of conditional 3.5, wherein f is total effective focal length of optical imaging lens, and f1 is the effective focal length of the first lens, and f2 is having for the second lens Imitate focal length.More specifically, f1, f2 and f can further meet 2.67≤f1/f+f2/f≤3.10.Meet 2.5 < f1/f of conditional + f2/f < 3.5 is conducive to the deviation angle for reducing light, improves the image quality of system.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.5 < f/f23 < 1.0 of conditional, Wherein, f is total effective focal length of optical imaging lens, and f23 is the combined focal length of the second lens and the third lens.More specifically, f 0.65≤f/f23≤0.81 can further be met with f23.Meet 0.5 < f/f23 < 1.0 of conditional, is conducive to balance each The tolerance sensitivity of mirror, while being conducive to shorten camera lens overall length.

In the exemplary embodiment, the optical imaging lens of the application can meet 0 < of conditional | R1/R2 | < 0.5, Wherein, R1 is the radius of curvature of the object side of the first lens, and R2 is the radius of curvature of the image side surface of the first lens.More specifically, R1 and R2 can further meet 0.25≤| R1/R2 |≤0.39.Meet 0 < of conditional | R1/R2 | < 0.5 is conducive to rationally adjust Contribution amount of whole first lens to imaging system aberration.

In the exemplary embodiment, the optical imaging lens of the application can meet 0 < R3/f3 < 1.3 of conditional, In, R3 is the radius of curvature of the object side of the second lens, and f3 is the effective focal length of the third lens.More specifically, R3 and f3 is into one Step can meet 0.11≤R3/f3≤0.97.Meet 0 < R3/f3 < 1.3 of conditional, it is saturating second to be conducive to operative constraint light The deviation of mirror reduces the sensibility of system.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.5 < of conditional (CT1+CT2)/∑ CT < 1.0, wherein CT1 is center thickness of first lens on optical axis, and CT2 is center thickness of second lens on optical axis, ∑ CT is summation of first lens to the third lens center thickness on optical axis respectively.More specifically, CT1, CT2 and ∑ CT into One step can meet 0.71≤(CT1+CT2)/∑ CT≤0.82.Meet 0.5 < of conditional (CT1+CT2)/∑ CT < 1.0, favorably In space on reasonable distribution axis, shortens system overall length, make the more compact structure of system.

In the exemplary embodiment, above-mentioned optical imaging lens may also include diaphragm.Object side can be for example arranged in diaphragm Between the first lens.Diaphragm to optical imaging lens distance SL and first lens of the imaging surface on optical axis object side extremely Distance TTL of the imaging surface of optical imaging lens on optical axis can meet 0.6 < SL/TTL < 1.2.More specifically, SL and TTL 0.8 < SL/TTL < 1.0, such as 0.93≤SL/TTL≤0.99 can further be met.Meet 0.6 < SL/TTL < 1.2, has Conducive to relative aperture is expanded, system light-inletting quantity is improved, the signal-to-noise ratio of imaging sensor is improved.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.2 < T12/ ∑ AT < 1 of conditional, Wherein, T12 is the airspace of the first lens and the second lens on optical axis, and ∑ AT is that the first lens are any into the third lens The summation of airspace of adjacent two lens on optical axis.More specifically, T12 and ∑ AT can further meet 0.5 < T12/ ∑ AT < 1, such as 0.58≤T12/ ∑ AT≤0.87.Meet 0.2 < T12/ ∑ AT < 1 of conditional, is conducive to the assembly of eyeglass, and And also help shortening system overall length.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.3 < DT11/DT32 < of conditional 1.2, wherein DT11 is the maximum effective radius of the object side of the first lens, and DT32 is that the maximum of the image side surface of the third lens has Imitate radius.More specifically, DT11 and DT32 can further meet 0.60≤DT11/DT32≤0.98.0.3 < DT11/ of conditional DT32 < 1.2 is conducive to the incident angle for adjusting each visual field, improves image quality, balance system overall length.

In the exemplary embodiment, the optical imaging lens of the application can meet 0.7 < of conditional (TTL/ImgH)/2 < 1.2, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical imaging lens, and ImgH is light Learn the half of effective pixel area diagonal line length on the imaging surface of imaging lens.More specifically, TTL and ImgH can further meet 0.8 < (TTL/ImgH)/2 < 1.0, such as 0.90≤(TTL/ImgH)/2≤0.97.Meet 0.7 < (TTL/ of conditional ImgH)/2 < 1.2 is conducive to the miniaturization of lens module, it is made to be more suitable for having the portable of strict demand to thickness Electronic equipment.

Optionally, above-mentioned optical imaging lens may also include optical filter for correcting color error ratio and/or for protecting The protection glass of photosensitive element on imaging surface.

Multi-disc eyeglass, such as described above three can be used according to the optical imaging lens of the above embodiment of the application Piece.By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing Deng the volume that can effectively reduce camera lens, the machinability for reducing the susceptibility of camera lens and improving camera lens, so that optical imaging lens Head, which is more advantageous to, to be produced and processed and is applicable to the portable electronic products such as mobile phone.Optical imaging lens through the above configuration Can also have the characteristics such as large aperture, miniaturization, high image quality, and can be applied in fields such as infrared light detecting, identifications.

In presently filed embodiment, at least one of mirror surface of each lens is aspherical mirror, that is, first thoroughly At least one of the object side of each lens in mirror, the second lens and the third lens and image side surface are aspherical mirror.It is non- The characteristics of spherical lens is: from lens centre to lens perimeter, curvature is consecutive variations.It is aspherical compared with spherical lens Lens have more preferably radius of curvature characteristic, have the advantages that improve and distort aberration and improvement astigmatic image error.It is mostly used in system Non-spherical lens can eliminate the aberration occurred when imaging, as much as possible so as to improve image quality.Optionally, The object side of each lens in one lens, the second lens and the third lens and image side surface are aspherical mirror.

However, it will be understood by those of skill in the art that without departing from this application claims technical solution the case where Under, the lens numbers for constituting optical imaging lens can be changed, to obtain each result and advantage described in this specification.Example Such as, although being described by taking three lens as an example in embodiments, which is not limited to include three Lens.If desired, the optical imaging lens may also include the lens of other quantity.

The specific embodiment for being applicable to the optical imaging lens of above embodiment is further described with reference to the accompanying drawings.

Embodiment 1

Referring to Fig. 1 to Fig. 2 C description according to the optical imaging lens of the embodiment of the present application 1.Fig. 1 is shown according to this Apply for the structural schematic diagram of the optical imaging lens of embodiment 1.

As shown in Figure 1, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Convex surface, image side surface S6 are concave surface.Optical filter E4 has object side S7 and image side surface S8.Light from object sequentially passes through each table Face S1 to S8 is simultaneously ultimately imaged on imaging surface S9.

In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote mirror The image quality of head.

Table 1 show the surface types of each lens of the optical imaging lens of embodiment 1, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 1

As shown in Table 1, the object side of any one lens of the first lens E1 into the third lens E3 and image side surface are It is aspherical.In the present embodiment, the face type x of each non-spherical lens is available but is not limited to following aspherical formula and is defined:

Wherein, x be it is aspherical along optical axis direction when being highly the position of h, away from aspheric vertex of surface apart from rise；C is Aspherical paraxial curvature, c=1/R (that is, inverse that paraxial curvature c is upper 1 mean curvature radius R of table)；K be circular cone coefficient ( It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th rank.The following table 2 give can be used for it is each aspherical in embodiment 1 The high-order coefficient A of mirror surface S1-S6₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-5.0570E-02

3.9856E-01

-1.4229E+00

1.8379E+00

-7.0850E-01

-3.7571E-01

0.0000E+00

S2

1.7275E-01

-1.2415E+00

5.0980E+00

-1.4093E+01

1.8090E+01

-1.0705E+01

2.4122E+00

0.0000E+00

S3

1.9266E-01

-1.4738E+00

6.7015E+00

-1.9068E+01

2.6344E+01

-1.6584E+01

3.8760E+00

0.0000E+00

S4

9.8842E-01

-3.8418E+00

9.4228E+00

-1.2814E+01

9.5025E+00

-3.1915E+00

4.1552E-01

0.0000E+00

S5

1.0582E+00

-4.2107E+00

8.4130E+00

-1.0068E+01

7.0585E+00

-2.6438E+00

4.0695E-01

0.0000E+00

S6

6.8067E-01

-1.9929E+00

2.9115E+00

-2.5603E+00

1.3252E+00

-3.6972E-01

4.2673E-02

0.0000E+00

Table 2

Table 3 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 1 ImgH, optics total length TTL (that is, distance from the object side S1 of the first lens E1 to imaging surface S9 on optical axis), maximum half Field angle HFOV, F-number Fno, total effective focal length f of optical imaging lens and the effective focal length f1 to f3 of each lens.

ImgH(mm)	1.62	f(mm)	1.85
				TTL(mm)	2.98	f1(mm)	3.28
HFOV(°)	41.8	f2(mm)	2.05
				Fno	1.12	f3(mm)	-5.39

Table 3

Optical imaging lens in embodiment 1 meet:

F/EPD=1.12, wherein f is total effective focal length of optical imaging lens, and EPD is the entrance pupil of optical imaging lens Diameter；

F1/f+f2/f=2.88, wherein f is total effective focal length of optical imaging lens, and f1 is the effective of the first lens E1 Focal length, f2 are the effective focal length of the second lens E2；

F/f23=0.65, wherein f is total effective focal length of optical imaging lens, and f23 is that the second lens E2 and third are saturating The combined focal length of mirror E3；

| R1/R2 |=0.36, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, and R2 is the first lens E1 Image side surface S2 radius of curvature；

R3/f3=0.76, wherein R3 is the radius of curvature of the object side S3 of the second lens E2, and f3 is the third lens E3's Effective focal length；

(CT1+CT2)/∑ CT=0.82, wherein CT1 is center thickness of the first lens E1 on optical axis, CT2 second Center thickness of the lens E2 on optical axis, ∑ CT are the first lens E1, the second lens E2, the third lens E3 respectively on optical axis Center thickness summation；

SL/TTL=0.93, wherein SL is imaging surface S9 distance on optical axis of the diaphragm to optical imaging lens, TTL For the first lens E1 object side S1 to optical imaging lens distance of the imaging surface S9 on optical axis；

T12/ ∑ AT=0.87, wherein T12 is the airspace of the first lens E1 and the second lens E2 on optical axis, ∑ AT is the first lens E1, airspace of two lens of arbitrary neighborhood on optical axis is total in the second lens E2, the third lens E3 With；

DT11/DT32=0.60, wherein DT11 is the maximum effective radius of the object side S1 of the first lens E1, and DT32 is The maximum effective radius of the image side surface S6 of the third lens E3；

(TTL/ImgH)/2=0.92, wherein TTL be the first lens E1 object side S1 to optical imaging lens imaging Distance of the face S9 on optical axis, ImgH are the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens.

Fig. 2A shows chromatic curve on the axis of the optical imaging lens of embodiment 1, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 2 B shows the astigmatism curve of the optical imaging lens of embodiment 1, indicates meridian Curvature of the image and sagittal image surface bending.Fig. 2 C shows the distortion curve of the optical imaging lens of embodiment 1, indicates different pictures Distortion sizes values corresponding to height.According to fig. 2 A to Fig. 2 C it is found that optical imaging lens given by embodiment 1 can be realized it is good Good image quality.

Embodiment 2

Referring to Fig. 3 to Fig. 4 C description according to the optical imaging lens of the embodiment of the present application 2.In the present embodiment and following In embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2 Optical imaging lens structural schematic diagram.

As shown in figure 3, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are concave surface.Optical filter E4 has object side S7 and image side surface S8.Light from object sequentially passes through each table Face S1 to S8 is simultaneously ultimately imaged on imaging surface S9.

Table 4 show the surface types of each lens of the optical imaging lens of embodiment 2, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 4

As shown in Table 4, in example 2, the object side of any one lens of the first lens E1 into the third lens E3 It is aspherical with image side surface.Table 5 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-1.4906E-01

1.3873E+00

-6.5668E+00

1.5192E+01

-1.7435E+01

7.3818E+00

0.0000E+00

S2

2.9723E-01

-2.2494E+00

9.2261E+00

-2.6117E+01

3.7190E+01

-2.5305E+01

6.6222E+00

0.0000E+00

S3

-4.5436E-03

-2.3988E-01

8.9270E-01

-6.7386E+00

1.5340E+01

-1.3141E+01

3.9143E+00

0.0000E+00

S4

1.7691E+00

-8.9138E+00

2.9924E+01

-6.1716E+01

7.5419E+01

-4.7543E+01

1.1786E+01

0.0000E+00

S5

1.4686E+00

-6.7675E+00

1.7510E+01

-2.7902E+01

2.6500E+01

-1.3637E+01

2.8945E+00

0.0000E+00

S6

5.5253E-01

-1.6646E+00

2.8396E+00

-3.0813E+00

2.0127E+00

-7.1786E-01

1.0613E-01

0.0000E+00

Table 5

Table 6 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 2 ImgH, optics total length TTL, maximum angle of half field-of view HFOV, F-number Fno, total effective focal length f of optical imaging lens and each The effective focal length f1 to f3 of lens.

ImgH(mm)	1.52	f(mm)	1.75
				TTL(mm)	2.84	f1(mm)	3.24
HFOV(°)	40.9	f2(mm)	1.69
				Fno	1.19	f3(mm)	-4.04

Table 6

Fig. 4 A shows chromatic curve on the axis of the optical imaging lens of embodiment 2, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 4 B shows the astigmatism curve of the optical imaging lens of embodiment 2, indicates meridian Curvature of the image and sagittal image surface bending.Fig. 4 C shows the distortion curve of the optical imaging lens of embodiment 2, indicates different pictures Distortion sizes values corresponding to height.According to Fig. 4 A to Fig. 4 C it is found that optical imaging lens given by embodiment 2 can be realized it is good Good image quality.

Embodiment 3

The optical imaging lens according to the embodiment of the present application 3 are described referring to Fig. 5 to Fig. 6 C.Fig. 5 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 3.

As shown in figure 5, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

Table 7 show the surface types of each lens of the optical imaging lens of embodiment 3, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 7

As shown in Table 7, in embodiment 3, the object side of any one lens of the first lens E1 into the third lens E3 It is aspherical with image side surface.Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each non- Spherical surface type can be limited by the formula (1) provided in above-described embodiment 1.

Table 8

Table 9 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 3 ImgH, optics total length TTL, maximum angle of half field-of view HFOV, F-number Fno, optical imaging lens total effective focal length f and The effective focal length f1 to f3 of each lens.

ImgH(mm)	1.26	f(mm)	1.43
				TTL(mm)	2.45	f1(mm)	2.49
HFOV(°)	40.9	f2(mm)	1.33
				Fno	0.98	f3(mm)	-3.10

Table 9

Fig. 6 A shows chromatic curve on the axis of the optical imaging lens of embodiment 3, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 6 B shows the astigmatism curve of the optical imaging lens of embodiment 3, indicates meridian Curvature of the image and sagittal image surface bending.Fig. 6 C shows the distortion curve of the optical imaging lens of embodiment 3, indicates different pictures Distortion sizes values corresponding to height.According to Fig. 6 A to Fig. 6 C it is found that optical imaging lens given by embodiment 3 can be realized it is good Good image quality.

Embodiment 4

The optical imaging lens according to the embodiment of the present application 4 are described referring to Fig. 7 to Fig. 8 C.Fig. 7 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 4.

As shown in fig. 7, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are convex surface.Optical filter E4 has object side S7 and image side surface S8.Light from object sequentially passes through each table Face S1 to S8 is simultaneously ultimately imaged on imaging surface S9.

Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 4 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 10

As shown in Table 10, in example 4, the object side of any one lens of the first lens E1 into the third lens E3 It is aspherical with image side surface.Table 11 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

9.0943E-01

-1.6367E+00

6.0225E-01

-5.7699E-02

-5.5338E-03

5.1823E-04

0.0000E+00

S2

4.7300E-01

-3.3850E+00

2.1905E+01

-8.7126E+01

1.6086E+02

-1.3751E+02

4.4524E+01

0.0000E+00

S3

-1.3489E-01

2.5388E-02

2.0136E-01

5.5959E-01

-3.1192E-01

-6.3939E-01

1.5363E-02

-1.9277E-04

-4.9594E-05

S4

9.8779E-01

-5.2420E-01

2.4406E-01

-5.7859E-02

7.4392E-03

-4.9391E-04

1.3275E-05

0.0000E+00

S5

1.9309E-01

3.1166E-01

1.9638E-01

-5.8275E-02

5.6111E-01

9.3527E-01

1.4371E-01

-5.8807E-04

-1.4629E-04

S6

-8.7750E-02

-1.6469E-01

1.6669E-01

9.1663E-01

1.7140E+00

3.1996E+00

5.2544E+00

4.5796E-06

8.8153E-06

Table 11

Table 12 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 4 ImgH, optics total length TTL, maximum angle of half field-of view HFOV, F-number Fno, total effective focal length f of optical imaging lens and each The effective focal length f1 to f3 of lens.

ImgH(mm)	1.06	f(mm)	1.26
				TTL(mm)	2.00	f1(mm)	2.62
HFOV(°)	40.4	f2(mm)	1.30
				Fno	1.10	f3(mm)	-57.16

Table 12

Fig. 8 A shows chromatic curve on the axis of the optical imaging lens of embodiment 4, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Fig. 8 B shows the astigmatism curve of the optical imaging lens of embodiment 4, indicates meridian Curvature of the image and sagittal image surface bending.Fig. 8 C shows the distortion curve of the optical imaging lens of embodiment 4, indicates different pictures Distortion sizes values corresponding to height.According to Fig. 8 A to Fig. 8 C it is found that optical imaging lens given by embodiment 4 can be realized it is good Good image quality.

Embodiment 5

The optical imaging lens according to the embodiment of the present application 5 are described referring to Fig. 9 to Figure 10 C.Fig. 9 shows basis The structural schematic diagram of the optical imaging lens of the embodiment of the present application 5.

As shown in figure 9, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 5 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 13

As shown in Table 13, in embodiment 5, the object side of any one lens of the first lens E1 into the third lens E3 It is aspherical with image side surface.Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

6.3408E-01

-8.2111E-01

-4.6840E-01

5.2680E-01

-1.4560E-01

1.2633E-02

0.0000E+00

S2

3.5964E-01

-3.0032E+00

2.0015E+01

-7.9399E+01

1.4780E+02

-1.2812E+02

4.2105E+01

0.0000E+00

S3

-1.4007E-01

3.8648E-02

2.0110E-01

5.9878E-01

-1.9551E-01

-2.2207E-01

-5.6582E-02

1.0386E-01

1.9606E-02

S4

6.5400E-01

-6.6274E-02

2.1230E-02

-3.4015E-03

2.7921E-04

-1.0094E-05

7.9168E-08

0.0000E+00

S5

1.5687E-01

3.3905E-01

2.5615E-01

-4.3416E-02

4.1589E-01

2.1058E-01

-2.4386E-02

-2.1777E-01

-2.5596E-01

S6

-3.0577E-02

-1.1523E-01

1.7562E-01

8.7073E-01

1.3352E+00

1.6741E+00

1.0319E+00

-8.2276E-01

1.0931E-06

Table 14

Table 15 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 5 ImgH, optics total length TTL, maximum angle of half field-of view HFOV, F-number Fno, total effective focal length f of optical imaging lens and each The effective focal length f1 to f3 of lens.

ImgH(mm)	1.19	f(mm)	1.40
				TTL(mm)	2.13	f1(mm)	2.72
HFOV(°)	40.9	f2(mm)	1.34
				Fno	1.21	f3(mm)	-9.95

Table 15

Figure 10 A shows chromatic curve on the axis of the optical imaging lens of embodiment 5, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 10 B shows the astigmatism curve of the optical imaging lens of embodiment 5, indicates meridian Curvature of the image and sagittal image surface bending.Figure 10 C shows the distortion curve of the optical imaging lens of embodiment 5, indicates different Distortion sizes values corresponding to image height.According to Figure 10 A to Figure 10 C it is found that optical imaging lens given by embodiment 5 can be real Existing good image quality.

Embodiment 6

The optical imaging lens according to the embodiment of the present application 6 are described referring to Figure 11 to Figure 12 C.Figure 11 shows root According to the structural schematic diagram of the optical imaging lens of the embodiment of the present application 6.

As shown in figure 11, according to the optical imaging lens of the application illustrative embodiments along optical axis by object side to image side according to Sequence includes: the first lens E1, the second lens E2, the third lens E3, optical filter E4 and imaging surface S9.

Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging lens of embodiment 6 And circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 16

As shown in Table 16, in embodiment 6, the object side of any one lens of the first lens E1 into the third lens E3 It is aspherical with image side surface.Table 17 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

9.7029E-01

-1.6227E+00

6.1352E-01

-7.6723E-02

2.7866E-05

1.1141E-04

0.0000E+00

S2

5.7396E-01

-4.6165E+00

2.7472E+01

-1.0002E+02

1.7837E+02

-1.5069E+02

4.8691E+01

0.0000E+00

S3

-1.0224E-01

2.2304E-02

1.9689E-01

5.9096E-01

-1.6893E-01

-2.0629E-01

-4.0601E-02

-8.6650E-02

-3.0838E-02

S4

9.2082E-01

-4.1497E-01

1.8990E-01

-4.4591E-02

5.6968E-03

-3.7639E-04

1.0076E-05

0.0000E+00

S5

1.7455E-01

2.8554E-01

1.7779E-01

-9.3859E-02

4.3120E-01

5.1123E-01

1.8845E-01

1.2914E-02

6.7661E-03

S6

-1.0462E-01

-1.5249E-01

2.0188E-01

9.1384E-01

1.4916E+00

2.3367E+00

2.9075E+00

1.6594E-08

5.2231E-09

Table 17

Table 18 provides the half of effective pixel area diagonal line length on the imaging surface S9 of optical imaging lens in embodiment 6 ImgH, optics total length TTL, maximum angle of half field-of view HFOV, F-number Fno, total effective focal length f of optical imaging lens and each The effective focal length f1 to f3 of lens.

ImgH(mm)	1.09	f(mm)	1.27
				TTL(mm)	2.04	f1(mm)	2.28
HFOV(°)	40.0	f2(mm)	1.31
				Fno	1.10	f3(mm)	-24.79

Table 18

Figure 12 A shows chromatic curve on the axis of the optical imaging lens of embodiment 6, indicates the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 12 B shows the astigmatism curve of the optical imaging lens of embodiment 6, indicates meridian Curvature of the image and sagittal image surface bending.Figure 12 C shows the distortion curve of the optical imaging lens of embodiment 6, indicates different Distortion sizes values corresponding to image height.According to figure 12 A to figure 12 C it is found that optical imaging lens given by embodiment 6 can be real Existing good image quality.

To sum up, embodiment 1 to embodiment 6 meets relationship shown in table 19 respectively.

Table 19

The application also provides a kind of imaging device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation Property matal-oxide semiconductor element (CMOS).Imaging device can be the independent imaging equipment of such as digital camera, be also possible to The image-forming module being integrated on the mobile electronic devices such as mobile phone.The imaging device is equipped with optical imaging lens described above Head.

Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature Any combination and the other technical solutions formed.Such as features described above and (but being not limited to) disclosed herein have it is similar The technical characteristic of function is replaced mutually and the technical solution that is formed.

Claims

It by object side to image side sequentially include: the first lens, the second lens and the third lens along optical axis 1. optical imaging lens, It is characterized in that,

First lens have positive light coke, and image side surface is concave surface；

Second lens have positive light coke, and object side is concave surface；

The third lens have negative power；

First lens all have airspace between each adjacent lens into the third lens；And

Total effective focal length f of the optical imaging lens and the Entry pupil diameters EPD of the optical imaging lens meet f/EPD < 1.4。
2. optical imaging lens according to claim 1, which is characterized in that total effective focal length of the optical imaging lens F, the effective focal length f2 of the effective focal length f1 of first lens and second lens meets 2.5 < f1/f+f2/f < 3.5.
3. optical imaging lens according to claim 1, which is characterized in that total effective focal length of the optical imaging lens F and second lens and the combined focal length f23 of the third lens meet 0.5 < f/f23 < 1.0.
4. optical imaging lens according to claim 1, which is characterized in that the curvature of the object side of first lens half The radius of curvature R 2 of the image side surface of diameter R1 and first lens meets 0 < | R1/R2 | < 0.5.
5. optical imaging lens according to claim 1, which is characterized in that the curvature of the object side of second lens half Diameter R3 and the effective focal length f3 of the third lens meet 0 < R3/f3 < 1.3.
6. optical imaging lens according to claim 5, which is characterized in that the maximum of the object side of first lens has The maximum effective radius DT32 for imitating the image side surface of radius DT11 and the third lens meets 0.3 < DT11/DT32 < 1.2.
7. optical imaging lens according to claim 1, which is characterized in that first lens on the optical axis in Heart thickness CT1, center thickness CT2 of second lens on the optical axis and first lens to the third lens are divided The summation ∑ CT of center thickness not on the optical axis meets 0.5 < (CT1+CT2)/∑ CT < 1.0.
8. optical imaging lens according to claim 1, which is characterized in that first lens and second lens exist Airspace T12 on the optical axis and first lens into the third lens two lens of arbitrary neighborhood in the optical axis On airspace summation ∑ AT meet 0.2 < T12/ ∑ AT < 1.
9. optical imaging lens according to any one of claim 1 to 8, which is characterized in that the optical imaging lens It further include diaphragm, distance SL of the imaging surface of the diaphragm to the optical imaging lens on the optical axis is saturating with described first Distance TTL of the imaging surface on the optical axis of the object side of mirror to the optical imaging lens meets 0.6 < SL/TTL < 1.2。
10. optical imaging lens according to any one of claim 1 to 8, which is characterized in that the object of first lens Side is to distance TTL of the imaging surface on the optical axis of the optical imaging lens and the imaging surface of the optical imaging lens The half ImgH of upper effective pixel area diagonal line length meets 0.7 < (TTL/ImgH)/2 < 1.2.
It by object side to image side sequentially include: the first lens, the second lens and the third lens along optical axis 11. optical imaging lens, It is characterized in that,

First lens have positive light coke, and image side surface is concave surface；

Second lens have positive light coke, and object side is concave surface；

The third lens have negative power；

First lens all have airspace between each adjacent lens into the third lens；And

The maximum of the image side surface of the maximum effective radius DT11 and the third lens of the object side of first lens effectively half Diameter DT32 meets 0.3 < DT11/DT32 < 1.2.
12. optical imaging lens according to claim 11, which is characterized in that total effective coke of the optical imaging lens Effective focal length f2 away from f, the effective focal length f1 of first lens and second lens meets 2.5 < f1/f+f2/f < 3.5。
13. optical imaging lens according to claim 11, which is characterized in that total effective coke of the optical imaging lens Combined focal length f23 away from f and second lens and the third lens meets 0.5 < f/f23 < 1.0.
14. optical imaging lens according to claim 11, which is characterized in that the curvature of the object side of first lens The radius of curvature R 2 of the image side surface of radius R1 and first lens meets 0 < | R1/R2 | < 0.5.
15. optical imaging lens according to claim 11, which is characterized in that the curvature of the object side of second lens Radius R3 and the effective focal length f3 of the third lens meet 0 < R3/f3 < 1.3.
16. optical imaging lens according to claim 11, which is characterized in that total effective coke of the optical imaging lens Entry pupil diameters EPD away from f and the optical imaging lens meets f/EPD < 1.4.
17. optical imaging lens described in any one of 1 to 16 according to claim 1, which is characterized in that the optical imaging lens Head further includes diaphragm, distance SL of the imaging surface of the diaphragm to the optical imaging lens on the optical axis and described first Distance TTL of the imaging surface on the optical axis of the object side of lens to the optical imaging lens meets 0.6 < SL/TTL < 1.2。
18. optical imaging lens described in any one of 1 to 16 according to claim 1, which is characterized in that first lens Object side is to distance TTL of the imaging surface on the optical axis of the optical imaging lens and the imaging of the optical imaging lens The half ImgH of effective pixel area diagonal line length meets 0.7 < (TTL/ImgH)/2 < 1.2 on face.
19. optical imaging lens according to claim 18, which is characterized in that first lens and second lens On the optical axis airspace T12 and first lens into the third lens two lens of arbitrary neighborhood in the light The summation ∑ AT of airspace on axis meets 0.2 < T12/ ∑ AT < 1.
20. optical imaging lens according to claim 18, which is characterized in that first lens are on the optical axis Center thickness CT1, center thickness CT2 of second lens on the optical axis and first lens to the third lens The summation ∑ CT of the center thickness on the optical axis meets 0.5 < (CT1+CT2)/∑ CT < 1.0 respectively.