CN108279483A

CN108279483A - Pick-up lens group

Info

Publication number: CN108279483A
Application number: CN201810194778.9A
Authority: CN
Inventors: 徐标; 张凯元
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-03-09
Filing date: 2018-03-09
Publication date: 2018-07-13
Anticipated expiration: 2038-03-09
Also published as: CN108279483B; WO2019169856A1

Abstract

This application discloses a kind of pick-up lens group, which includes sequentially by object side to image side along optical axis：First lens, the second lens, the third lens and the 4th lens.It is convex surface that first lens, which have positive light coke, object side,；Second lens have positive light coke；It is concave surface that the third lens, which have positive light coke, object side, and image side surface is convex surface；4th lens have negative power.The maximum angle of half field-of view HFOV of pick-up lens group meets 45 ° of 50 ° of ＜ HFOV ＜.

Description

Pick-up lens group

Technical field

This application involves a kind of pick-up lens groups, more specifically, this application involves it is a kind of include four lens camera lens Head group.

Background technology

With popularizing for the portable electronic products such as mobile phone, tablet computer, people's needs diversified to product function are increasingly Increase.Meanwhile with the development of science and technology, 3D photography technologies are more and more ripe, and are obtained extensively in portable electronic product General application.And it is existing can based on infrared band be imaged miniaturization camera lens, can not take into account mostly large aperture, big field angle with High image quality.

Therefore, it is necessary to it is a kind of it is based on infrared band, there is miniaturization, large aperture, big field angle and good imaging performance The features such as pick-up lens group.

Invention content

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

On the one hand, this application provides a kind of pick-up lens group, which is sequentially wrapped along optical axis by object side to image side It includes：First lens, the second lens, the third lens and the 4th lens.First lens can have positive light coke, and object side can be convex Face；Second lens can have positive light coke；It can be concave surface that the third lens, which can have positive light coke, object side, and image side surface can be Convex surface；4th lens can have negative power.Wherein, the maximum angle of half field-of view HFOV of pick-up lens group can meet 45 ° of ＜ HFOV 50 ° of ＜.

In one embodiment, the radius of curvature R 5 of the object side of the effective focal length f2 and the third lens of the second lens can Satisfaction 8≤| f2/R5 |≤28.

In one embodiment, the radius of curvature of the object side of total effective focal length f and the first lens of pick-up lens group R1 can meet 1 ＜ f/R1 ＜ 2.

In one embodiment, total effective focal length f of pick-up lens group and the effective focal length f2 of the second lens can meet 0 ＜ f/f2 ＜ 0.25.

In one embodiment, the curvature of the image side surface of the radius of curvature R 3 and the second lens of the object side of the second lens Radius R4 can meet 1 ＜ | R3/R4 | ＜ 3.

In one embodiment, the second lens and the combined focal length f23 of the third lens, the third lens are on optical axis Heart thickness CT3 and the 4th lens can meet 0.50 ＜ f23/ (CT4+CT3)≤4.50 in the center thickness CT4 on optical axis.

In one embodiment, spacing distance T34 and the second lens on optical axis of the third lens and the 4th lens and Spacing distance T23 of the third lens on optical axis can meet T34/T23 ＜ 0.2.

In one embodiment, pick-up lens group may also include the imaging surface being arranged in the 4th lens and pick-up lens group Between infrared band pass filter, the band logical wave band of the infrared band pass filter can be 750nm to 1000nm.Optionally, infrared The band logical wave band of bandpass filter can be 850nm to 940nm.

In one embodiment, total effective focal length f of pick-up lens group and total effective focal length EPD of pick-up lens group can Meet f/EPD≤2.0.

In one embodiment, the center of the object side of the first lens to the imaging surface of pick-up lens group on optical axis Distance TTL and the half ImgH of effective pixel area diagonal line length on the imaging surface of pick-up lens group can meet TTL/ImgH ＜ 1.6。

In one embodiment, spacing distance of two lens of arbitrary neighborhood on optical axis in the first lens to the 4th lens The sum of ∑ AT and the object side of the first lens center to pick-up lens group imaging surface on optical axis distance TTL can meet 0.15≤∑ AT/TTL ＜ 0.25.

On the other hand, present invention also provides a kind of pick-up lens group, the lens group along optical axis by object side to image side according to Sequence includes：First lens, the second lens, the third lens, the 4th lens and optical filter.First lens can have positive light coke, Object side can be convex surface；Second lens can have positive light coke；The third lens can have positive light coke, and object side can be recessed Face, image side surface can be convex surface；It can be infrared band pass filter, band logical wave band that 4th lens, which can have negative power, optical filter, Can be 750nm to 1000nm.

In one embodiment, the band logical wave band of above-mentioned infrared band pass filter can be 850nm to 940nm.

The application uses multi-disc (for example, four) lens, by each power of lens of reasonable distribution, face type, each Spacing etc. on axis between the center thickness of mirror and each lens so that above-mentioned pick-up lens group have miniaturization, large aperture, greatly At least one advantageous effects such as field angle, high image quality.

Description of the drawings

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 pick-up lens group according to the embodiment of the present application 1；

Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axis of the pick-up lens group of embodiment 1, astigmatism curve, distortion song Line and ratio chromatism, curve；

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

Fig. 4 A to Fig. 4 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 2, astigmatism curve, distortion song Line and ratio chromatism, curve；

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

Fig. 6 A to Fig. 6 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 3, astigmatism curve, distortion song Line and ratio chromatism, curve；

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

Fig. 8 A to Fig. 8 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 4, astigmatism curve, distortion song Line and ratio chromatism, curve；

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

Figure 10 A to Figure 10 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 5, astigmatism curve, distortion Curve and ratio chromatism, curve；

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

Figure 12 A to Figure 12 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 6, astigmatism curve, distortion Curve and ratio chromatism, curve；

Figure 13 shows the structural schematic diagram of the pick-up lens group according to the embodiment of the present application 7；

Figure 14 A to Figure 14 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 7, astigmatism curve, distortion Curve and ratio chromatism, curve；

Figure 15 shows the structural schematic diagram of the pick-up lens group according to the embodiment of the present application 8；

Figure 16 A to Figure 16 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 8, astigmatism curve, distortion Curve and ratio chromatism, curve；

Figure 17 shows the structural schematic diagrams according to the pick-up lens group of the embodiment of the present application 9；

Figure 18 A to Figure 18 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 9, astigmatism curve, distortion Curve and ratio chromatism, curve；

Figure 19 shows the structural schematic diagram of the pick-up lens group according to the embodiment of the present application 10；

Figure 20 A to Figure 20 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 10, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；

Figure 21 shows the structural schematic diagram of the pick-up lens group according to the embodiment of the present application 11；

Figure 22 A to Figure 22 D respectively illustrate chromatic curve on the axis of the pick-up lens group of embodiment 11, astigmatism curve, abnormal Varied curve and ratio chromatism, curve.

Specific implementation mode

Refer to the attached drawing is made more detailed description by the application in order to better understand to the various aspects of the application.It answers Understand, the description of the only illustrative embodiments to 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.It includes associated institute to state "and/or" 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, and does not indicate that 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 convenience 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.It is known as object side near the surface of object in each lens, It is known 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 It indicates there is stated feature, element and/or component when being used in bright book, but does not preclude the presence or addition of one or more Other feature, component, assembly unit and/or combination thereof.In addition, ought the statement of such as at least one of " ... " appear in institute When after the list of row 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 the meaning consistent with their meanings 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.

It may include such as four lens with focal power according to the pick-up lens group of the application illustrative embodiments, That is, the first lens, the second lens, the third lens and the 4th lens.This four lens are sequentially arranged along optical axis by object side to image side Row.

In the exemplary embodiment, the first lens can have positive light coke, and object side can be convex surface；Second lens can With positive light coke；The third lens, which can have positive light coke, object side, to be concave surface, and image side surface can be convex surface；4th lens There can be negative power.

In the exemplary embodiment, the image side surface of the first lens can be concave surface.

In the exemplary embodiment, the object side of the second lens can be concave surface, and image side surface can be convex surface.

In the exemplary embodiment, the object side of the 4th lens can be convex surface, and image side surface can be concave surface.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 8≤| f2/R5 |≤28, wherein F2 is the effective focal length of the second lens, and R5 is the radius of curvature of the object side of the third lens.More specifically, f2 and R5 further may be used Satisfaction 8.13≤| f2/R5 |≤27.59.By by the effective focal length of the second lens and the radius of curvature of the third lens object side In a certain range, the reasonable distribution to focal power may be implemented in Ratio control, and by three rank astigmatism amount controls of optical system System is in certain range, astigmatism amount caused by balance system front-end optics and back-end optical element so that the optical system System has good image quality.

In the exemplary embodiment, the pick-up lens group of the application may include being arranged between the 4th lens and imaging surface Infrared band pass filter, the band logical wave band of the infrared band pass filter can be about 750nm to about 1000nm, further, Band logical wave band can be about 850nm to about 940nm.Setting infrared band pass filter may make red between the 4th lens and imaging surface Outer light by and filter veiling glare, to eliminate the signal interference that non-infrared light is brought, for example, due to non-infrared light introduce aberration and Caused by image blur.

In the exemplary embodiment, the pick-up lens group of the application can meet 45 ° of 50 ° of ＜ HFOV ＜ of conditional, wherein HFOV is the maximum angle of half field-of view of pick-up lens group.More specifically, HFOV can further meet 46.6 °≤HFOV≤48.8 °.It is logical Cross the optimization to optical system so that the maximum field of view angle of optical system is more than 90 degree, realizes the characteristic of wide-angle, meets for example just Take the visual field demand of formula electronic product.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional f/EPD≤2.0, wherein f is Total effective focal length of pick-up lens group, EPD are the Entry pupil diameters of pick-up lens group.More specifically, f and EPD can further meet 1.90≤f/EPD≤1.96.Pass through the reasonable distribution of system focal power so that the F numbers (that is, f/EPD) of system are less than 2, with reality The characteristics of existing system large aperture.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional TTL/ImgH ＜ 1.6, wherein TTL is the center of the object side of the first lens to distance of the imaging surface on optical axis of pick-up lens group, and ImgH is pick-up lens The half of effective pixel area diagonal line length on the imaging surface of group.More specifically, TTL and ImgH can further meet 1.36≤ TTL/ImgH≤1.53.By the way that the ratio constraint of the optics total length of system and half image height in a certain range, is conducive to reality The ultra-slim features of existing system.

In the exemplary embodiment, the pick-up lens group of the application can meet 1 ＜ f/R1 ＜ 2 of conditional, wherein f is Total effective focal length of pick-up lens group, R1 are the radius of curvature of the object side of the first lens.More specifically, f and R1 further may be used Meet 1.13≤f/R1≤1.89.By by the ratio of total effective focal length of pick-up lens group and the first lens object flank radius Value control can preferably control contribution amount of the lens to five rank spherical aberration of system, and then to the three of lens generation in a certain range Rank spherical aberration compensates so that system has good image quality on axis.

In the exemplary embodiment, the pick-up lens group of the application can meet 0 ＜ f/f2 ＜ 0.25 of conditional, wherein f For total effective focal length of pick-up lens group, f2 is the effective focal length of the second lens.More specifically, f and f2 can further meet 0.07≤f/f2≤0.21.Meet 0 ＜ f/f2 ＜ 0.25 of conditional, is conducive to the image quality for improving camera lens.It is taken the photograph by control As the ratio of the effective focal length of total effective focal length and the second lens of lens group, can effectively correction mirror head portrait it is poor, reduce tolerance Sensibility.

In the exemplary embodiment, the pick-up lens group of the application can meet 1 ＜ of conditional | R3/R4 | ＜ 3, wherein R3 is the radius of curvature of the object side of the second lens, and R4 is the radius of curvature of the image side surface of the second lens.More specifically, R3 and R4 It can further meet 1.38≤| R3/R4 |≤2.80.By by the curvature of the radius of curvature and image side surface of the second lens object side Radius controls in a certain range, is capable of the deflection angle of rational control system rim ray, to be effectively reduced system Susceptibility.

In the exemplary embodiment, the pick-up lens group of the application can meet 0.50 ＜ f23/ (CT4+CT3) of conditional ≤ 4.50, f23 are the combined focal length of the second lens and the third lens, and CT3 is the third lens in the center thickness on optical axis, CT4 It is the 4th lens in the center thickness on optical axis.More specifically, f23, CT3 and CT4 can further meet 0.80 ＜ f23/ (CT4+ CT3)≤4.50, for example, 0.88≤f23/ (CT4+CT3)≤4.50.By the group focus for constraining the second lens and the third lens Away from the ratio with the sum of center thickness on the third lens axis and the 4th lens axis, can reasonable control system coma, make optical system System has good optical property.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional T34/T23 ＜ 0.2, wherein T34 is the spacing distance of the third lens and the 4th lens on optical axis, T23 be the second lens and the third lens on optical axis between Gauge from.More specifically, T34 and T23 can further meet 0.08≤T34/T23≤0.18.By constraining the third lens and the The ratio between the airspace of the airspace of four lens and the second lens and the third lens, can be by the curvature of field contribution amount control of each visual field System is in rational range.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 0.15≤∑ AT/TTL ＜ 0.25, wherein ∑ AT is the summation of spacing distance of two lens of arbitrary neighborhood in each lens with focal power on optical axis, TTL is distance of the center of the object side of the first lens to imaging surface on optical axis.More specifically, ∑ AT and TTL further may be used Meet 0.15≤∑ AT/TTL≤0.20.By two lens of arbitrary neighborhood in each lens of the constraint with focal power on optical axis Spacing distance ratio of the summation at a distance from the object side of the first lens to imaging surface is on optical axis, can rationally control and be The distortion of system makes system have good image quality.

It should be understood that in including four pick-up lens groups with power lenses, ∑ AT=T12+T23+ T34, wherein T12 is the spacing distance of the first lens and the second lens on optical axis, and T23 is that the second lens and the third lens exist Spacing distance on optical axis, T34 are the spacing distance of the third lens and the 4th lens on optical axis.

In the exemplary embodiment, pick-up lens group may also include at least one diaphragm, with promoted camera lens at image quality Amount.For example, diaphragm may be provided between object side and the first lens.In another example diaphragm can also be provided at the first lens and second thoroughly Between mirror.

Optionally, above-mentioned pick-up lens group may also include the optical filter for correcting color error ratio and/or be used for guard bit In the protective glass of the photosensitive element on imaging surface.

Multi-disc eyeglass, such as described above four can be used according to the pick-up lens group 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 lens group, the machinability for reducing the susceptibility of lens group and improving lens group so that camera shooting Lens group, which is more advantageous to, to be produced and processed and is applicable to portable electronic product.

It can be based on infrared band by the pick-up lens group of above-mentioned configuration to be imaged, and also there is large aperture, big field angle With the characteristics such as good image quality.

In presently filed embodiment, at least one of 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 solution the case where Under, the lens numbers for constituting pick-up lens group can be changed, to obtain each result and advantage described in this specification.For example, Although being described by taking four lens as an example in embodiments, which is not limited to include four lens. If desired, the pick-up lens group may also include the lens of other quantity.

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

Embodiment 1

Referring to Fig. 1 to Fig. 2 D descriptions according to the pick-up lens group of the embodiment of the present application 1.Fig. 1 is shown according to this Shen Please embodiment 1 pick-up lens group structural schematic diagram.

As shown in Figure 1, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

It is convex surface that first lens E1, which has positive light coke, object side S1, 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 positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.It is convex surface that 4th lens E4, which has negative power, object side S7, and image side surface S8 is concave surface.Filter Mating plate E5 has object side S9 and image side surface S10, can be infrared band pass filter, and band logical wave band can be about 750nm to about 1000nm, further, band logical wave band can be about 850nm to about 940nm.Light from object sequentially passes through each surface S1 To S10 and it is ultimately imaged on imaging surface S11.

Table 1 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens group of embodiment 1 Bore 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 in the first lens E1 to the 4th lens E4 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, paraxial curvature c is the inverse of 1 mean curvature radius R of upper table)；K be circular cone coefficient ( It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th ranks.The following table 2 give can be used for it is each aspherical in embodiment 1 The high-order coefficient A of minute surface S1-S8₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

Face number

A4

A6

A8

A10

A12

A14

A16

S1

-4.8485E-02

2.2385E-01

-1.8606E+00

7.0654E+00

-1.5684E+01

1.8055E+01

-8.9239E+00

S2

2.7359E-01

-1.4311E+00

5.8339E+00

-2.0239E+01

4.3114E+01

-5.2695E+01

2.6977E+01

S3

-2.4984E-01

-7.3536E-02

-1.2763E-01

-4.8674E+00

2.0863E+01

-4.2455E+01

3.2385E+01

S4

-3.3720E-01

1.2926E-01

-4.6449E-02

-6.2993E-01

1.3506E+00

-1.1974E+00

5.7292E-01

S5

-1.6085E-01

3.5366E-01

-1.4069E+00

3.5626E+00

-3.7407E+00

1.7989E+00

-3.3026E-01

S6

-6.3170E-01

1.4318E+00

-2.9381E+00

3.8705E+00

-2.7472E+00

9.8973E-01

-1.4378E-01

S7

-1.2551E-01

-1.3721E-01

2.7392E-01

-2.1463E-01

8.2793E-02

-1.5283E-02

1.0720E-03

S8

-1.1290E-01

3.5309E-02

6.4591E-03

-1.2965E-02

5.1133E-03

-9.0219E-04

6.2800E-05

Table 2

It is total that table 3 provides the effective focal length f1 to f4 of each lens in embodiment 1, total effective focal length f, the optics of pick-up lens group On length TTL (that is, distance from the center of the object side S1 of the first lens E1 to imaging surface S11 on optical axis), imaging surface S11 The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV.

f1(mm)	4.30	f(mm)	2.56
				f2(mm)	12.28	TTL(mm)	3.84
f3(mm)	1.10	ImgH(mm)	2.74
				f4(mm)	-1.17	HFOV(°)	47.0

Table 3

Pick-up lens group in embodiment 1 meets：

| f2/R5 |=8.13, wherein f2 is the effective focal length of the second lens E2, and R5 is the object side S5 of the third lens E3 Radius of curvature；

F/EPD=1.95, wherein f is total effective focal length of pick-up lens group, and EPD is the Entry pupil diameters of pick-up lens group；

TTL/ImgH=1.40, wherein the center that TTL is the object side S1 of the first lens E1 is to imaging surface S11 in optical axis On distance, ImgH be imaging surface S11 on effective pixel area diagonal line length half；

F/R1=1.79, wherein f is total effective focal length of pick-up lens group, and R1 is the object side S1's of the first lens E1 Radius of curvature；

F/f2=0.21, wherein f is total effective focal length of pick-up lens group, and f2 is the effective focal length of the second lens E2；

| R3/R4 |=2.18, wherein R3 is the radius of curvature of the object side S3 of the second lens E2, and R4 is the second lens E2 Image side surface S4 radius of curvature；

F23/ (CT3+CT4)=1.17, wherein f23 is the combined focal length of the second lens E2 and the third lens E3, and CT3 is For the third lens E3 in the center thickness on optical axis, CT4 is the 4th lens E4 in the center thickness on optical axis；

T34/T23=0.08, wherein T34 is the spacing distance of the third lens E3 and the 4th lens E4 on optical axis, T23 For the spacing distance of the second lens E2 and the third lens E3 on optical axis；

∑ AT/TTL=0.19, wherein ∑ AT is two lens of arbitrary neighborhood in the first lens E1 to the 4th lens E4 in light The sum of spacing distance on axis, TTL are distance of the center of the object side S1 of the first lens E1 to imaging surface S11 on optical axis.

Fig. 2A shows chromatic curve on the axis of the pick-up lens group of embodiment 1, indicate the light of different wave length via Converging focal point after camera lens deviates.Fig. 2 B show the astigmatism curve of the pick-up lens group of embodiment 1, indicate that meridianal image surface is curved The bending of bent and sagittal image surface.Fig. 2 C show the distortion curve of the pick-up lens group of embodiment 1, in the case of indicating different visual angles Distortion sizes values.Fig. 2 D show the ratio chromatism, curve of the pick-up lens group of embodiment 1, after indicating light via camera lens The deviation of different image heights on imaging surface.A to Fig. 2 D is it is found that the pick-up lens group given by embodiment 1 can according to fig. 2 Realize good image quality.

Embodiment 2

Referring to Fig. 3 to Fig. 4 D descriptions according to the pick-up lens group of the embodiment of the present application 2.In the present embodiment and following reality It applies in example, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application 2 The structural schematic diagram of pick-up lens group.

As shown in figure 3, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 4 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens group of embodiment 2 Bore 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 in the first lens E1 to the 4th lens E4 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 non- Spherical surface 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

-8.1333E- 02

1.3787E+ 00

-2.0646E +01

1.7286E+ 02

-8.8203E+ 02

2.7778E+ 03

-5.2778E +03

5.5446E +03

- 2.4750E +03

S2

2.9068E- 01

-2.3178E+ 00

1.9772E+ 01

-1.3607E+ 02

6.1225E+ 02

-1.7589E +03

3.0924E+ 03

- 3.0324E +03

1.2698E +03

S3

-3.4632E- 01

1.7342E+ 00

-2.0862E +01

1.3295E+ 02

-5.3996E+ 02

1.3701E+ 03

-2.1187E +03

1.8171E +03

- 6.5394E +02

S4

-3.0678E- 01

8.4520E- 02

1.2268E+ 00

-1.1875E+ 01

4.4721E+ 01

-9.3114E +01

1.1158E+ 02

- 7.1340E +01

1.8941E +01

S5

-1.7985E- 01

4.9918E- 01

-1.8965E +00

4.6879E+ 00

-6.3154E+ 00

6.4546E+ 00

-5.2385E +00

2.6247E +00

- 5.5487E -01

S6

-6.4429E- 01

1.4509E+ 00

-2.8092E +00

3.3625E+ 00

-2.0522E+ 00

5.4790E- 01

- 2.1821E- 02

- 4.6788E -03

- 2.6544E -03

S7

-1.4331E- 01

-2.2022E- 02

- 5.7318E- 03

1.4464E- 01

-1.8716E- 01

1.0862E- 01

- 3.3260E- 02

5.2699E -03

- 3.4305E -04

S8

-1.0911E- 01

4.4573E- 02

- 2.1075E- 02

1.3772E- 02

-7.9647E- 03

2.5198E- 03

- 3.7746E- 04

1.6403E -05

9.7908E -07

Table 5

It is total that table 6 provides the effective focal length f1 to f7 of each lens in embodiment 2, total effective focal length f, the optics of pick-up lens group The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on length TTL, imaging surface S11.

f1(mm)	4.14	f(mm)	2.56
				f2(mm)	15.32	TTL(mm)	3.82
f3(mm)	1.08	ImgH(mm)	2.74
				f4(mm)	-1.18	HFOV(°)	47.1

Table 6

Fig. 4 A show chromatic curve on the axis of the pick-up lens group of embodiment 2, indicate the light of different wave length via Converging focal point after camera lens deviates.Fig. 4 B show the astigmatism curve of the pick-up lens group of embodiment 2, indicate that meridianal image surface is curved The bending of bent and sagittal image surface.Fig. 4 C show the distortion curve of the pick-up lens group of embodiment 2, in the case of indicating different visual angles Distortion sizes values.Fig. 4 D show the ratio chromatism, curve of the pick-up lens group of embodiment 2, after indicating light via camera lens The deviation of different image heights on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that the pick-up lens group given by embodiment 2 can Realize good image quality.

Embodiment 3

The pick-up lens group 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 Apply for the structural schematic diagram of the pick-up lens group of embodiment 3.

As shown in figure 5, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 7 shows surface type, radius of curvature, thickness, material and the circle of each lens of the pick-up lens group of embodiment 3 Bore 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 in the first lens E1 to the 4th lens E4 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.

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

- 8.9112E- 02

1.6183E+ 00

-2.4532E+ 01

2.0811E+ 02

-1.0748E +03

3.4260E+ 03

-6.5893E+ 03

7.0091E+ 03

- 3.1684E +03

S2

3.1128E- 01

-2.4622E +00

2.1436E+ 01

-1.5149E+ 02

7.0188E+ 02

-2.0763E+ 03

3.7571E+ 03

-3.7899E +03

1.6316E +03

S3

- 3.8516E- 01

1.9509E+ 00

-2.2787E+ 01

1.4172E+ 02

-5.6282E +02

1.3976E+ 03

-2.1188E+ 03

1.7841E+ 03

- 6.2818E +02

S4

- 2.6864E- 01

- 1.5681E- 01

3.4067E+ 00

-2.5219E+ 01

9.2767E+ 01

-1.9736E+ 02

2.4503E+ 02

-1.6357E +02

4.5497E +01

S5

- 1.6547E- 01

7.1385E- 01

-3.4512E+ 00

1.0843E+ 01

-2.0551E +01

2.6224E+ 01

-2.1515E+ 01

9.9417E+ 00

- 1.9373E +00

S6

- 6.7581E- 01

1.6459E+ 00

-3.5251E+ 00

4.9706E+ 00

-4.3282E +00

2.5948E+ 00

-1.1490E+ 00

3.3924E- 01

- 4.7004E -02

S7

- 1.2931E- 01

- 8.7210E- 02

1.2405E- 01

3.0278E- 03

- 9.1756E- 02

6.8460E- 02

-2.2957E- 02

3.7835E- 03

- 2.4967E -04

S8

- 1.1989E- 01

5.7637E- 02

-3.4953E- 02

2.5280E- 02

- 1.4494E- 02

4.8890E- 03

-8.9978E- 04

7.9876E- 05

- 2.2647E -06

Table 8

It is total that table 9 provides the effective focal length f1 to f7 of each lens in embodiment 3, total effective focal length f, the optics of pick-up lens group The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on length TTL, imaging surface S11.

f1(mm)	4.01	f(mm)	2.54
				f2(mm)	20.34	TTL(mm)	3.77
f3(mm)	1.07	ImgH(mm)	2.74
				f4(mm)	-1.19	HFOV(°)	46.6

Table 9

Fig. 6 A show chromatic curve on the axis of the pick-up lens group of embodiment 3, indicate the light of different wave length via Converging focal point after camera lens deviates.Fig. 6 B show the astigmatism curve of the pick-up lens group of embodiment 3, indicate that meridianal image surface is curved The bending of bent and sagittal image surface.Fig. 6 C show the distortion curve of the pick-up lens group of embodiment 3, in the case of indicating different visual angles Distortion sizes values.Fig. 6 D show the ratio chromatism, curve of the pick-up lens group of embodiment 3, after indicating light via camera lens The deviation of different image heights on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that the pick-up lens group given by embodiment 3 can Realize good image quality.

Embodiment 4

The pick-up lens group 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 Apply for the structural schematic diagram of the pick-up lens group of embodiment 4.

As shown in fig. 7, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 10 show the surface types of each lens of the pick-up lens group of embodiment 4, radius of curvature, thickness, material 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 in the first lens E1 to the 4th lens E4 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

-6.2770E- 02

9.0623E- 01

-1.4991E+ 01

1.3703E+ 02

-7.6901E+ 02

2.6745E+ 03

-5.6289E+ 03

6.5625E+ 03

- 3.2539 E+03

S2

2.9818E- 01

-1.8227E +00

1.0839E+ 01

-5.6352E+ 01

1.8483E+ 02

-3.3666E+ 02

2.1540E+ 02

2.0341E+ 02

- 2.8104 E+02

S3

-4.5060E- 01

3.5107E+ 00

-4.5067E+ 01

3.2096E+ 02

-1.4377E+ 03

4.0266E+ 03

-6.8664E+ 03

6.4989E+ 03

- 2.6011 E+03

S4

-2.6230E- 01

- 1.5619E- 01

3.4017E+ 00

-2.6925E+ 01

1.0409E+ 02

-2.3076E+ 02

2.9702E+ 02

-2.0532E +02

5.9266 E+01

S5

-1.4699E- 01

5.9134E- 01

-2.8627E+ 00

8.6061E+ 00

-1.4437E+ 01

1.6168E+ 01

-1.2184E+ 01

5.4127E+ 00

- 1.0390 E+00

S6

-6.2942E- 01

1.3293E+ 00

-2.3211E+ 00

2.0241E+ 00

2.5753E- 01

-1.7673E+ 00

1.2912E+ 00

- 3.9839E- 01

4.6147 E-02

S7

-1.1326E- 01

- 1.7182E- 01

2.7725E- 01

-1.4820E- 01

1.7489E- 03

3.1035E- 02

-1.3499E- 02

2.4119E- 03

- 1.6291 E-04

S8

-1.1761E- 01

3.8211E- 02

-7.0653E- 03

4.1954E- 03

-4.8098E- 03

2.1222E- 03

-4.2355E- 04

3.4682E- 05

- 4.1572 E-07

Table 11

Table 12 provide the effective focal length f1 to f7 of each lens in embodiment 4, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	3.95	f(mm)	2.54
				f2(mm)	21.35	TTL(mm)	3.73
f3(mm)	1.06	ImgH(mm)	2.74
				f4(mm)	-1.18	HFOV(°)	47.1

Table 12

Fig. 8 A show chromatic curve on the axis of the pick-up lens group of embodiment 4, indicate the light of different wave length via Converging focal point after camera lens deviates.Fig. 8 B show the astigmatism curve of the pick-up lens group of embodiment 4, indicate that meridianal image surface is curved The bending of bent and sagittal image surface.Fig. 8 C show the distortion curve of the pick-up lens group of embodiment 4, in the case of indicating different visual angles Distortion sizes values.Fig. 8 D show the ratio chromatism, curve of the pick-up lens group of embodiment 4, after indicating light via camera lens The deviation of different image heights on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that the pick-up lens group given by embodiment 4 can Realize good image quality.

Embodiment 5

The pick-up lens group 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 Apply for the structural schematic diagram of the pick-up lens group of embodiment 5.

As shown in figure 9, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：Diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 13 show the surface types of each lens of the pick-up lens group of embodiment 5, radius of curvature, thickness, material 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 in the first lens E1 to the 4th lens E4 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

- 1.1115E- 01

2.2518E+ 00

-3.3985E+ 01

2.9314E+ 02

-1.5508E+ 03

5.0913E+ 03

-1.0120E +04

1.1148E+ 04

-5.2238E +03

S2

2.7273E- 01

-1.9439E+ 00

1.5580E+ 01

-1.0578E+ 02

4.7452E+ 02

-1.3681E +03

2.4235E+ 03

-2.4048E +03

1.0236E+ 03

S3

- 4.2952E- 01

2.4951E+ 00

-2.9161E+ 01

1.8433E+ 02

-7.4536E+ 02

1.9007E+ 03

-2.9991E +03

2.6840E+ 03

-1.0338E +03

S4

- 2.7980E- 01

-4.4434E- 01

6.8845E+ 00

-4.6599E+ 01

1.6307E+ 02

-3.3541E +02

4.0722E+ 02

-2.6766E +02

7.3370E+ 01

S5

- 1.6193E- 01

7.4205E- 01

-3.3627E+ 00

1.2258E+ 01

-3.2711E+ 01

5.8892E+ 01

-6.2491E +01

3.4815E+ 01

-7.8633E +00

S6

- 7.5552E- 01

2.2343E+ 00

-5.1617E+ 00

7.7309E+ 00

-6.6612E+ 00

3.1341E+ 00

- 6.6583E- 01

- 4.0294E- 04

1.5703E- 02

S7

- 1.2328E- 01

-1.0808E- 01

1.8831E- 01

-9.3424E- 02

-1.0629E- 02

2.8188E- 02

- 1.1243E- 02

1.9350E- 03

- 1.2738E- 04

S8

- 1.3966E- 01

1.0047E- 01

-8.9701E- 02

7.1560E- 02

-4.0224E- 02

1.4101E- 02

- 2.9263E- 03

3.2686E- 04

- 1.4908E- 05

Table 14

Table 15 provide the effective focal length f1 to f7 of each lens in embodiment 5, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	3.80	f(mm)	2.53
				f2(mm)	35.00	TTL(mm)	3.78
f3(mm)	1.06	ImgH(mm)	2.74
				f4(mm)	-1.18	HFOV(°)	47.1

Table 15

Figure 10 A show chromatic curve on the axis of the pick-up lens group of embodiment 5, indicate the light of different wave length via Converging focal point after camera lens deviates.Figure 10 B show the astigmatism curve of the pick-up lens group of embodiment 5, indicate meridianal image surface Bending and sagittal image surface bending.Figure 10 C show the distortion curve of the pick-up lens group of embodiment 5, indicate different visual angles feelings Distortion sizes values under condition.Figure 10 D show the ratio chromatism, curve of the pick-up lens group of embodiment 5, indicate light via The deviation of different image heights after camera lens on imaging surface.According to Figure 10 A to Figure 10 D it is found that camera lens given by embodiment 5 Head group can realize good image quality.

Embodiment 6

The pick-up lens group according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.Figure 11 shows basis The structural schematic diagram of the pick-up lens group of the embodiment of the present application 6.

It as shown in figure 11, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 16 show the surface types of each lens of the pick-up lens group of embodiment 6, radius of curvature, thickness, material 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 in the first lens E1 to the 4th lens E4 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

- 3.2793E- 02

3.5898E- 01

-3.4443E+ 00

1.8386E+ 01

-6.3728E+ 01

1.4168E+ 02

-1.9564E+ 02

1.5195E+ 02

- 5.0525E +01

S2

- 2.4794E- 02

-7.9404E- 01

8.1321E+ 00

-5.4983E+ 01

2.2496E+ 02

-5.6335E +02

8.2934E+ 02

-6.4403E +02

1.9685E +02

S3

- 2.0247E- 01

3.5605E- 01

-4.7352E+ 00

2.7314E+ 01

-1.0376E+ 02

2.5261E+ 02

-3.8873E+ 02

3.4447E+ 02

- 1.3179E +02

S4

- 3.1979E- 02

-1.0312E+ 00

4.2004E+ 00

-1.1514E+ 01

2.0302E+ 01

-2.3178E +01

1.6342E+ 01

-6.1557E +00

8.7784E -01

S5

- 1.6273E- 01

-6.6005E- 01

1.2266E+ 00

1.9718E+ 00

-9.7598E+ 00

1.5882E+ 01

-1.3298E+ 01

5.7107E+ 00

- 9.9874E -01

S6

- 2.2475E- 01

-3.2601E- 01

1.8038E+ 00

-4.2747E+ 00

6.3665E+ 00

-5.6032E +00

2.7827E+ 00

- 7.0638E- 01

6.8282E -02

S7

- 3.4430E- 01

2.6698E- 01

-1.7721E- 01

8.2155E- 02

-2.7280E- 02

6.5801E- 03

-1.0834E- 03

1.0600E- 04

- 4.5643E -06

S8

- 1.2507E- 01

9.7701E- 02

-5.8730E- 02

2.4195E- 02

-7.0227E- 03

1.4222E- 03

-1.9122E- 04

1.5346E- 05

- 5.5509E -07

Table 17

Table 18 provide the effective focal length f1 to f7 of each lens in embodiment 6, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.21	f(mm)	2.52
				f2(mm)	19.55	TTL(mm)	4.14
f3(mm)	6.43	ImgH(mm)	2.73
				f4(mm)	-523.41	HFOV(°)	47.2

Table 18

Figure 12 A show chromatic curve on the axis of the pick-up lens group of embodiment 6, indicate the light of different wave length via Converging focal point after camera lens deviates.Figure 12 B show the astigmatism curve of the pick-up lens group of embodiment 6, indicate meridianal image surface Bending and sagittal image surface bending.Figure 12 C show the distortion curve of the pick-up lens group of embodiment 6, indicate different visual angles feelings Distortion sizes values under condition.Figure 12 D show the ratio chromatism, curve of the pick-up lens group of embodiment 6, indicate light via The deviation of different image heights after camera lens on imaging surface.According to Figure 12 A to Figure 12 D it is found that camera lens given by embodiment 6 Head group can realize good image quality.

Embodiment 7

The pick-up lens group according to the embodiment of the present application 7 is described referring to Figure 13 to Figure 14 D.Figure 13 shows basis The structural schematic diagram of the pick-up lens group of the embodiment of the present application 7.

It as shown in figure 13, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 19 show the surface types of each lens of the pick-up lens group of embodiment 7, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 19

As shown in Table 19, in embodiment 7, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 20 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, 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

- 4.8247E- 02

6.1393E- 01

-5.7233E+ 00

3.2323E+ 01

-1.1901E+ 02

2.8173E+ 02

-4.1257E+ 02

3.3875E+ 02

- 1.1898E +02

S2

- 8.4915E- 03

-1.1036E+ 00

1.4559E+ 01

-1.2475E+ 02

6.7138E+ 02

-2.2845E +03

4.7555E+ 03

-5.5193E +03

2.7340E +03

S3

- 1.7050E- 01

-3.3672E- 01

2.5642E+ 00

-1.8907E+ 01

7.8599E+ 01

-2.0285E +02

3.1485E+ 02

-2.7287E +02

1.0292E +02

S4

- 6.3042E- 02

-4.0936E- 01

9.2622E- 01

-1.0795E+ 00

-1.2941E+ 00

5.8799E+ 00

-8.0382E+ 00

5.0836E+ 00

- 1.2108E +00

S5

- 1.2111E- 01

-3.1913E- 01

2.8056E- 01

6.7134E- 01

-1.0607E+ 00

3.8297E- 01

2.4393E- 01

- 2.3016E- 01

5.0858E -02

S6

- 1.6386E- 01

-1.0787E- 01

3.2168E- 01

-2.2412E- 01

-4.7411E- 01

1.3375E+ 00

-1.2519E+ 00

5.2198E- 01

- 8.2226E -02

S7

- 3.2093E- 01

1.6715E- 01

-6.2803E- 02

1.6327E- 02

-5.7958E- 03

2.6158E- 03

-7.5017E- 04

1.1023E- 04

- 6.4704E -06

S8

- 1.1047E- 01

4.8586E- 02

-7.0328E- 03

-5.2173E- 03

3.2807E- 03

- 8.9715E- 04

1.3920E- 04

- 1.2043E- 05

4.5604E -07

Table 20

Table 21 provide the effective focal length f1 to f7 of each lens in embodiment 7, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.79	f(mm)	2.53
				f2(mm)	14.92	TTL(mm)	4.13
f3(mm)	5.48	ImgH(mm)	2.73
				f4(mm)	-80.00	HFOV(°)	47.1

Table 21

Figure 14 A show chromatic curve on the axis of the pick-up lens group of embodiment 7, indicate the light of different wave length via Converging focal point after camera lens deviates.Figure 14 B show the astigmatism curve of the pick-up lens group of embodiment 7, indicate meridianal image surface Bending and sagittal image surface bending.Figure 14 C show the distortion curve of the pick-up lens group of embodiment 7, indicate different visual angles feelings Distortion sizes values under condition.Figure 14 D show the ratio chromatism, curve of the pick-up lens group of embodiment 7, indicate light via The deviation of different image heights after camera lens on imaging surface.According to Figure 14 A to Figure 14 D it is found that camera lens given by embodiment 7 Head group can realize good image quality.

Embodiment 8

The pick-up lens group according to the embodiment of the present application 8 is described referring to Figure 15 to Figure 16 D.Figure 15 shows basis The structural schematic diagram of the pick-up lens group of the embodiment of the present application 8.

It as shown in figure 15, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 22 show the surface types of each lens of the pick-up lens group of embodiment 8, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 22

As shown in Table 22, in embodiment 8, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 23 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 8, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 23

Table 24 provide the effective focal length f1 to f7 of each lens in embodiment 8, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.72	f(mm)	2.53
				f2(mm)	17.07	TTL(mm)	4.14
f3(mm)	4.72	ImgH(mm)	2.73
				f4(mm)	-25.69	HFOV(°)	47.1

Table 24

Figure 16 A show chromatic curve on the axis of the pick-up lens group of embodiment 8, indicate the light of different wave length via Converging focal point after camera lens deviates.Figure 16 B show the astigmatism curve of the pick-up lens group of embodiment 8, indicate meridianal image surface Bending and sagittal image surface bending.Figure 16 C show the distortion curve of the pick-up lens group of embodiment 8, indicate different visual angles feelings Distortion sizes values under condition.Figure 16 D show the ratio chromatism, curve of the pick-up lens group of embodiment 8, indicate light via The deviation of different image heights after camera lens on imaging surface.According to Figure 16 A to Figure 16 D it is found that camera lens given by embodiment 8 Head group can realize good image quality.

Embodiment 9

The pick-up lens group according to the embodiment of the present application 9 is described referring to Figure 17 to Figure 18 D.Figure 17 shows bases The structural schematic diagram of the pick-up lens group of the embodiment of the present application 9.

It as shown in figure 17, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 25 show the surface types of each lens of the pick-up lens group of embodiment 9, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 25

As shown in Table 25, in embodiment 9, the object side of any one lens in the first lens E1 to the 4th lens E4 It is aspherical with image side surface.Table 26 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 9, wherein each Aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 26

Table 27 provide the effective focal length f1 to f7 of each lens in embodiment 9, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.42	f(mm)	2.52
				f2(mm)	19.05	TTL(mm)	4.17
f3(mm)	5.46	ImgH(mm)	2.73
				f4(mm)	-49.85	HFOV(°)	47.0

Table 27

Figure 18 A show chromatic curve on the axis of the pick-up lens group of embodiment 9, indicate the light of different wave length via Converging focal point after camera lens deviates.Figure 18 B show the astigmatism curve of the pick-up lens group of embodiment 9, indicate meridianal image surface Bending and sagittal image surface bending.Figure 18 C show the distortion curve of the pick-up lens group of embodiment 9, indicate different visual angles feelings Distortion sizes values under condition.Figure 18 D show the ratio chromatism, curve of the pick-up lens group of embodiment 9, indicate light via The deviation of different image heights after camera lens on imaging surface.According to Figure 18 A to Figure 18 D it is found that camera lens given by embodiment 9 Head group can realize good image quality.

Embodiment 10

The pick-up lens group according to the embodiment of the present application 10 is described referring to Figure 19 to Figure 20 D.Figure 19 shows root According to the structural schematic diagram of the pick-up lens group of the embodiment of the present application 10.

It as shown in figure 19, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 28 show the surface types of each lens of the pick-up lens group of embodiment 10, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 28

As shown in Table 28, in embodiment 10, the object side of any one lens in the first lens E1 to the 4th lens E4 Face and image side surface are aspherical.Table 29 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 10, 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

- 2.7574E- 02

4.1491E- 01

-4.4556E+ 00

2.8485E+ 01

-1.1816E+ 02

3.1166E+ 02

-5.0239E+ 02

4.4874E+ 02

- 1.6973 E+02

S2

- 3.5646E- 03

-1.2012E+ 00

1.7545E+ 01

-1.6402E+ 02

9.5657E+ 02

-3.5127E+ 03

7.8675E+ 03

-9.8033E +03

5.2055 E+03

S3

- 2.1336E- 01

6.3652E- 01

-5.7222E+ 00

2.3204E+ 01

-4.8465E+ 01

1.2322E+ 01

1.4662E+ 02

-2.7287E +02

1.5955 E+02

S4

- 4.4429E- 02

-7.3559E- 01

2.5061E+ 00

-6.7075E+ 00

1.2299E+ 01

-1.5266E+ 01

1.2532E+ 01

-6.0792E +00

1.3014 E+00

S5

- 1.7243E- 01

-5.0618E- 01

8.9557E- 01

6.4405E- 02

-1.7146E+ 00

3.7505E+ 00

-4.2784E+ 00

2.3817E+ 00

- 5.1130 E-01

S6

- 1.7401E- 01

-3.9691E- 01

1.8787E+ 00

-4.5990E+ 00

7.0009E+ 00

-6.3321E+ 00

3.3383E+ 00

- 9.5114E- 01

1.1315 E-01

S7

- 3.2250E- 01

1.9319E- 01

-1.1092E- 01

5.6980E- 02

-2.7270E- 02

1.0111E- 02

-2.3666E- 03

3.0042E- 04

- 1.5705 E-05

S8

- 5.0765E- 02

-1.4892E- 02

3.7492E- 02

-2.8452E- 02

1.2096E- 02

-3.1948E- 03

5.2247E- 04

- 4.8329E- 05

1.9205 E-06

Table 29

Table 30 provide the effective focal length f1 to f7 of each lens in embodiment 10, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.36	f(mm)	2.51
				f2(mm)	13.16	TTL(mm)	4.16
f3(mm)	6.39	ImgH(mm)	2.73
				f4(mm)	-210.31	HFOV(°)	47.1

Table 30

Figure 20 A show chromatic curve on the axis of the pick-up lens group of embodiment 10, indicate the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 20 B show the astigmatism curve of the pick-up lens group of embodiment 10, indicate meridian picture Face is bent and sagittal image surface bending.Figure 20 C show the distortion curve of the pick-up lens group of embodiment 10, indicate different visual angles In the case of distortion sizes values.Figure 20 D show the ratio chromatism, curve of the pick-up lens group of embodiment 10, indicate light warp By the deviation of the different image heights after camera lens on imaging surface.0A to Figure 20 D is it is found that taking the photograph given by embodiment 10 according to fig. 2 As lens group can realize good image quality.

Embodiment 11

The pick-up lens group according to the embodiment of the present application 11 is described referring to Figure 21 to Figure 22 D.Figure 21 shows root According to the structural schematic diagram of the pick-up lens group of the embodiment of the present application 11.

It as shown in figure 21, can be according to by object side to image side along optical axis according to the pick-up lens group of the application illustrative embodiments Sequence includes：First lens E1, diaphragm STO, the second lens E2, the third lens E3, the 4th lens E4, optical filter E5 and imaging surface S11。

Table 31 show the surface types of each lens of the pick-up lens group of embodiment 11, radius of curvature, thickness, material and Circular cone coefficient, wherein radius of curvature and the unit of thickness are millimeter (mm).

Table 31

As shown in Table 31, in embodiment 11, the object side of any one lens in the first lens E1 to the 4th lens E4 Face and image side surface are aspherical.Table 32 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 11, 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

-8.9961E- 03

4.1990E- 01

-7.2311E+ 00

5.7494E+ 01

-2.6526E+ 02

7.3782E+ 02

-1.2201E+ 03

1.1029E+ 03

- 4.1958E +02

S2

2.1636E- 02

-3.3398E +00

6.4708E+ 01

-6.9572E+ 02

4.4493E+ 03

-1.7416E +04

4.0904E+ 04

-5.2902E +04

2.8948E +04

S3

6.2880E- 03

-4.7733E +00

5.0772E+ 01

-3.2177E+ 02

1.2572E+ 03

-3.0825E +03

4.6123E+ 03

-3.8620E +03

1.3960E +03

S4

-1.2398E- 01

- 1.6224E- 01

-5.6476E- 01

4.0547E+ 00

-1.2947E+ 01

2.2942E+ 01

-2.2686E+ 01

1.1791E+ 01

- 2.5166E +00

S5

-1.6783E- 01

- 7.7129E- 01

3.6421E+ 00

-1.1668E+ 01

2.5115E+ 01

-3.2004E +01

2.3573E+ 01

-9.3755E +00

1.5665E +00

S6

-1.8434E- 01

- 4.6003E- 01

2.7120E+ 00

-7.9851E+ 00

1.3901E+ 01

-1.4133E +01

8.3090E+ 00

-2.6251E +00

3.4511E -01

S7

-2.5352E- 01

1.3562E- 01

-6.3150E- 02

2.3281E- 02

-9.5878E- 03

3.7496E- 03

-9.3122E- 04

1.2080E- 04

- 6.2745E -06

S8

-7.0498E- 02

5.5718E- 02

-3.4770E- 02

1.2482E- 02

-2.2992E- 03

4.2846E- 05

6.6106E- 05

- 1.1436E- 05

6.1322E -07

Table 32

Table 33 provide the effective focal length f1 to f7 of each lens in embodiment 11, pick-up lens group total effective focal length f, optics The half ImgH of effective pixel area diagonal line length and maximum angle of half field-of view HFOV on total length TTL, imaging surface S11.

f1(mm)	4.61	f(mm)	2.38
				f2(mm)	26.37	TTL(mm)	4.16
f3(mm)	4.32	ImgH(mm)	2.73
				f4(mm)	-85.42	HFOV(°)	48.8

Table 33

Figure 22 A show chromatic curve on the axis of the pick-up lens group of embodiment 11, indicate the light warp of different wave length Deviateed by the converging focal point after camera lens.Figure 22 B show the astigmatism curve of the pick-up lens group of embodiment 11, indicate meridian picture Face is bent and sagittal image surface bending.Figure 22 C show the distortion curve of the pick-up lens group of embodiment 11, indicate different visual angles In the case of distortion sizes values.Figure 22 D show the ratio chromatism, curve of the pick-up lens group of embodiment 11, indicate light warp By the deviation of the different image heights after camera lens on imaging surface.2A to Figure 22 D is it is found that taking the photograph given by embodiment 11 according to fig. 2 As lens group can realize good image quality.

To sum up, embodiment 1 to embodiment 11 meets relationship shown in table 34 respectively.

Conditional embodiment	1	2	3	4	5	6	7	8	9	10	11
												\|f2/R5\|	8.13	10.14	13.53	14.29	23.47	20.74	14.10	15.12	18.03	14.19	27.59
HFOV(°)	47.0	47.1	46.6	47.1	47.1	47.2	47.1	47.1	47.0	47.1	48.8
												f/EPD	1.95	1.95	1.95	1.96	1.95	1.95	1.90	1.95	1.95	1.95	1.95
TTL/ImgH	1.40	1.39	1.37	1.36	1.38	1.52	1.51	1.52	1.53	1.52	1.52
												f/R1	1.79	1.82	1.86	1.88	1.89	1.26	1.26	1.29	1.29	1.26	1.13
f/f2	0.21	0.17	0.12	0.12	0.07	0.13	0.17	0.15	0.13	0.19	0.09
												\|R3/R4\|	2.18	2.40	2.47	2.61	1.69	1.48	2.80	2.64	1.54	1.83	1.38
f23/(CT4+CT3)	1.17	1.12	1.10	1.10	0.88	4.50	3.90	3.46	3.91	4.08	3.36
												T34/T23	0.08	0.08	0.08	0.08	0.12	0.12	0.08	0.09	0.10	0.14	0.18
∑AT/TTL	0.19	0.18	0.19	0.19	0.16	0.18	0.20	0.20	0.18	0.16	0.15

Table 34

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

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 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 Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein Can technical characteristic replaced mutually and the technical solution that is formed.

Claims

1. pick-up lens group includes sequentially by object side to image side along optical axis：First lens, the second lens, the third lens and the 4th Lens, which is characterized in that

It is convex surface that first lens, which have positive light coke, object side,；

Second lens have positive light coke；

It is concave surface that the third lens, which have positive light coke, object side, and image side surface is convex surface；

4th lens have negative power；

The maximum angle of half field-of view HFOV of the pick-up lens group meets 45 ° of 50 ° of ＜ HFOV ＜.

2. pick-up lens group according to claim 1, which is characterized in that the effective focal length f2 of second lens with it is described The satisfaction of radius of curvature R 58 of the object side of the third lens≤| f2/R5 |≤28.

3. pick-up lens group according to claim 1, which is characterized in that total effective focal length f of the pick-up lens group with The radius of curvature R 1 of the object side of first lens meets 1 ＜ f/R1 ＜ 2.

4. pick-up lens group according to claim 1, which is characterized in that total effective focal length f of pick-up lens group with it is described The effective focal length f2 of second lens meets 0 ＜ f/f2 ＜ 0.25.

5. pick-up lens group according to claim 1, which is characterized in that the radius of curvature R 3 of the object side of the second lens with The radius of curvature R 4 of the image side surface of second lens meets 1 ＜ | R3/R4 | ＜ 3.

6. pick-up lens group according to claim 1, which is characterized in that the group of second lens and the third lens Complex focus f23, the third lens are in center thickness CT3 and the 4th lens on the optical axis on the optical axis Heart thickness CT4 meets 0.50 ＜ f23/ (CT4+CT3)≤4.50.

7. pick-up lens group according to claim 1, which is characterized in that the third lens and the 4th lens are in institute The spacing distance T34 and spacing distance T23 of second lens and the third lens on the optical axis stated on optical axis is full Sufficient T34/T23 ＜ 0.2.

8. pick-up lens group according to any one of claim 1 to 7, which is characterized in that the pick-up lens group is also wrapped Include the infrared band pass filter being arranged between the 4th lens and the imaging surface of the pick-up lens group, the infrared band logical The band logical wave band of optical filter is 750nm to 1000nm.

9. pick-up lens group according to claim 8, which is characterized in that the band logical wave band of the infrared band pass filter is 850nm to 940nm.

10. pick-up lens group according to any one of claim 1 to 7, which is characterized in that the pick-up lens group it is total Effective focal length f and total effective focal length EPD of the pick-up lens group meet f/EPD≤2.0.

11. pick-up lens group according to any one of claim 1 to 7, which is characterized in that the object side of first lens The center in face to distance TTL and the pick-up lens group of the imaging surface on the optical axis of the pick-up lens group imaging surface The half ImgH of upper effective pixel area diagonal line length meets TTL/ImgH ＜ 1.6.

12. pick-up lens group according to any one of claim 1 to 7, which is characterized in that first lens are to described The object side of the sum of the spacing distance of two lens of arbitrary neighborhood on the optical axis ∑ AT and first lens in 4th lens Distance TTL of the imaging surface on the optical axis of center to the pick-up lens group meet 0.15≤∑ AT/TTL ＜ 0.25.

13. pick-up lens group includes sequentially by object side to image side along optical axis：First lens, the second lens, the third lens, the 4th Lens and optical filter, which is characterized in that

Second lens have positive light coke；

4th lens have negative power；

The optical filter is infrared band pass filter, and band logical wave band is 750nm to 1000nm.