CN208607417U

CN208607417U - Optical imaging system

Info

Publication number: CN208607417U
Application number: CN201821189759.9U
Authority: CN
Inventors: 王新权
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2019-03-15
Anticipated expiration: 2028-07-26

Abstract

This application discloses a kind of optical imaging system, which sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens by object side to image side along optical axis.Wherein, the first lens have negative power, and image side surface is concave surface；Second lens have positive light coke；The third lens have positive light coke, and object side and image side surface are convex surface；4th lens have focal power；5th lens have focal power；6th lens have focal power, and object side is convex surface, and image side surface is concave surface.The half ImgH of effective pixel area diagonal line length meets 0 < DT12/ImgH < 1 on the effective half bore DT12 of maximum of the image side surface of first lens and the imaging surface of optical imaging system.

Description

Optical imaging system

Technical field

This application involves a kind of optical imaging systems, more specifically, this application involves a kind of optics including six-element lens Imaging system.

Background technique

In recent years, configured with such as photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor element (CMOS) The imaging lens of common photosensitive element are widely applied in each field, these camera lenses can be not only used for capture image, can also answer For space orientation technique.However, conventional lenses cannot achieve the critical alignment to f- θ distortion mostly, thus can not obtain Has higher positioning accuracy while preferable image quality.

Meanwhile with the raising of the common photosensitive element performance such as CCD or CMOS and the reduction of size, so that photosensitive element Pixel number increases and pixel dimension reduces, thus high image quality to the camera lens to match and miniaturization propose it is higher It is required that.

Therefore, it is necessary to one kind can well take into account high imaging quality, positioning accuracy and the optical system of miniaturization.

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 system of at least one above-mentioned disadvantage, for example, wide-angle lens.

The one aspect of the application discloses such a optical imaging system, the imaging system along optical axis by object side extremely Image side sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, first Lens can have negative power, and image side surface can be concave surface；Second lens can have positive light coke；The third lens can have positive light Focal power, object side and image side surface can be convex surface；4th lens have focal power；5th lens have focal power；6th thoroughly Mirror has focal power, and object side can be convex surface, and image side surface can be concave surface.Wherein, the maximum of the image side surface of the first lens is effective The half ImgH of effective pixel area diagonal line length can meet 0 < on the imaging surface of half bore DT12 and optical imaging system DT12/ImgH < 1.

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f3 of the third lens and optical imagery Total effective focal length f of system can meet 1 < (| f1 |+| f3 |)/f < 3.

In one embodiment, total effective focal length f of the effective focal length f4 of the 4th lens and optical imaging system can expire 1 < of foot | f4/f | < 2.

In one embodiment, the effective focal length f5 and optical imagery of the effective focal length f4 of the 4th lens, the 5th lens Total effective focal length f of system can meet 0 < | f4/f+f5/f | < 3.

In one embodiment, the object side of the maximum effective half bore DT11 and the third lens of the object side of the first lens The effective half bore DT31 of maximum in face can meet 0 < DT31/DT11 < 1.

In one embodiment, the first lens on optical axis center thickness CT1 and the 6th lens on optical axis Heart thickness CT6 can meet 0 < CT1/CT6 < 2.

In one embodiment, spacing distance T34, the 4th lens and of the third lens and the 4th lens on optical axis Spacing distance T45 and fiveth lens and sixth lens spacing distance T56 on optical axis of five lens on optical axis can meet 0 < T34/ (T45+T56) < 0.5.

In one embodiment, total effective coke of the radius of curvature R 6 of the image side surface of the third lens and optical imaging system - 1.5 < R6/f < 0 can be met away from f.

In one embodiment, the song of the image side surface of the radius of curvature R 11 and the 6th lens of the object side of the 6th lens Rate radius R12 can meet 0 < R12/R11 < 2.

In one embodiment, the object side of the first lens can have at least one point of inflexion.

In one embodiment, the object side of the first lens to optical imaging system distance of the imaging surface on optical axis The half ImgH of effective pixel area diagonal line length can meet TTL/ImgH < 3 on the imaging surface of TTL and optical imaging system.

In one embodiment, the maximum angle of half field-of view HFOV of optical imaging system can meet HFOV >=70 °.

Further aspect of the application discloses such a optical imaging system, and the imaging system is along optical axis by object side It sequentially include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens to image side.Wherein, One lens can have negative power, and image side surface can be concave surface；Second lens can have positive light coke；The third lens can have just Focal power, object side and image side surface can be convex surface；4th lens have focal power；5th lens have focal power；6th Lens have focal power, and object side can be convex surface, and image side surface can be concave surface.Wherein, the effective focal length f1 of the first lens, third The effective focal length f3 of lens and total effective focal length f of optical imaging system can meet 1 < (| f1 |+| f3 |)/f < 3；And first Have on the object side of lens to the imaging surface of distance TTL and optical imaging system of the imaging surface on optical axis of optical imaging system The half ImgH of effect pixel region diagonal line length can meet TTL/ImgH < 3.

The application uses multi-disc (for example, six) 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 optical imaging system has miniaturization, wide-angle, height At least one beneficial effect such as positioning accuracy, high imaging quality.

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 system 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 system of embodiment 1, astigmatism curve and Ratio chromatism, curve；

Fig. 3 shows the structural schematic diagram of the optical imaging system 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 system of embodiment 2, astigmatism curve and Ratio chromatism, curve；

Fig. 5 shows the structural schematic diagram of the optical imaging system 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 system of embodiment 3, astigmatism curve and Ratio chromatism, curve；

Fig. 7 shows the structural schematic diagram of the optical imaging system 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 system of embodiment 4, astigmatism curve and Ratio chromatism, curve；

Fig. 9 shows the structural schematic diagram of the optical imaging system 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 system of embodiment 5, astigmatism curve with And ratio chromatism, curve；

Figure 11 shows the structural schematic diagram of the optical imaging system 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 system of embodiment 6, astigmatism curve with And ratio chromatism, curve；

Figure 13 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 7；

Figure 14 A to Figure 14 C respectively illustrate chromatic curve on the axis of the optical imaging system of embodiment 7, astigmatism curve with And ratio chromatism, curve；

Figure 15 shows the structural schematic diagram of the optical imaging system according to the embodiment of the present application 8；

Figure 16 A to Figure 16 C respectively illustrate chromatic curve on the axis of the optical imaging system of embodiment 8, astigmatism curve with And ratio chromatism, curve；

Figure 17 shows the structural schematic diagrams according to the optical imaging system of the embodiment of the present application 9；

Figure 18 A to Figure 18 C respectively illustrate chromatic curve on the axis of the optical imaging system of embodiment 9, astigmatism curve with And ratio chromatism, 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 side Object side；Each lens are known as the image side surface of the lens near the surface of image side.

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 system according to the application illustrative embodiments may include such as six lens with focal power, That is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.This six-element lens is along optical axis Can have airspace by object side to image side sequential, and between two lens of arbitrary neighborhood.

In the exemplary embodiment, the first lens can have negative power, and image side surface can be concave surface；Second lens can With positive light coke；The third lens can have positive light coke, and object side can be convex surface, and image side surface can be convex surface；4th lens With positive light coke or negative power；5th lens have positive light coke or negative power；6th lens have positive light coke or Negative power, object side can be convex surface, and image side surface can be concave surface.

The first lens and the second lens with positive light coke are conducive to increase visual angle, while being also beneficial to compression diaphragm Position angle of incidence of light reduces pupil aberration, improves image quality.The third lens with positive light coke, object side and picture Side is convex surface, is conducive to reduction system spherical aberration and astigmatism.The 4th lens and the 5th lens with focal power, are conducive to school Positive color difference improves image quality.The 6th lens with focal power, object side are convex surface, and image side surface is concave surface, advantageous to shorten System overall length realizes the miniaturization of mould group.

Optionally, the object side of the first lens can have at least one point of inflexion.Such face type, which is disposed with, to be conducive to adjust The outer optical path distribution of axis, increases the light-inletting quantity in the system axle outer visual field unit time, improves the relative illumination of the outer visual field of axis.

In the exemplary embodiment, conditional HFOV >=70 ° can be met according to the optical imaging system of the application, In, HFOV is the maximum angle of half field-of view of optical imaging system.More specifically, HFOV can further meet 74.98 °≤HFOV≤ 75.01°.Meet conditional HFOV >=70 °, is conducive to large range of imaging and space orientation.

In the exemplary embodiment, according to the optical imaging system of the application can meet 1 < of conditional (| f1 |+| f3 |)/f < 3, wherein total effective focal length of the f for optical imaging system, the effective focal length of the first lens of f1, f3 the third lens have Imitate focal length.More specifically, f, f1 and f2 can further meet 1.80≤(| f1 |+| f3 |)/f≤2.60, for example, 2.00≤(| f1 |+|f3|)/f≤2.47.Meet 1 < of conditional (| f1 |+| f3 |)/f < 3, be conducive to reasonable distribution system focal power, and advantageous In the tolerance sensitivities of reduction system while realizing the miniaturization of mould group.

In the exemplary embodiment, 0 < R12/R11 < 2 of conditional can be met according to the optical imaging system of the application, Wherein, R11 is the radius of curvature of the 6th lens object side, and R12 is the radius of curvature of the 6th lens image side surface.More specifically, R11 0.5≤R12/R11≤1.5 can further be met with R12, for example, 0.82≤R12/R11≤1.25.Meet 0 < R12/ of conditional R11 < 2 is conducive to shortening system overall length, lowers the tolerance sensitivities of the 6th lens, improves the production yield of optical system.

In the exemplary embodiment, 0 < DT12/ImgH < of conditional can be met according to the optical imaging system of the application 1, wherein DT12 is effective half bore of maximum of the first lens image side surface, and ImgH is effective on the imaging surface of optical imaging system The half of pixel region diagonal line length.More specifically, DT12 and ImgH can further meet 0.3≤DT12/ImgH≤0.7, example Such as, 0.42≤DT12/ImgH≤0.55.Meet 0 < DT12/ImgH < 1 of conditional, is conducive to reduce mould group in three, space side Upward size realizes miniaturization.

In the exemplary embodiment, 1 < of conditional can be met according to the optical imaging system of the application | f4/f | < 2, Wherein, f is total effective focal length of optical imaging system, and f4 is the effective focal length of the 4th lens.More specifically, f and f4 are further It can meet 1.16≤| f4/f |≤1.82.Meet 1 < of conditional | f4/f | < 2, be conducive to lens injection molding process with Preferable balance is obtained between correction system aberration the two.

In the exemplary embodiment, 0 < DT31/DT11 < of conditional can be met according to the optical imaging system of the application 1, wherein DT11 is effective half bore of maximum of the first lens object side, and DT31 is the maximum effectively half of the third lens object side Bore.More specifically, DT11 and DT31 can further meet 0.1≤DT31/DT11≤0.6, for example, 0.24≤DT31/DT11 ≤0.41.Meet 0 < DT31/DT11 < 1 of conditional, is conducive to expand visual angle, the outer visual field of adjustment axis enters light, improves imaging Quality.

In the exemplary embodiment, -1.5 < R6/f < 0 of conditional can be met according to the optical imaging system of the application, Wherein, f is total effective focal length of optical imaging system, and R6 is the radius of curvature of the third lens image side surface.More specifically, f and R6 - 1.2≤R6/f≤- 0.4 can further be met, for example, -0.93≤R6/f≤- 0.59.Meet -1.5 < R6/f < 0 of conditional, Be conducive to shortening system overall length, reduce the tolerance sensitivities of the third lens.

In the exemplary embodiment, 0 < T34/ (T45+ of conditional can be met according to the optical imaging system of the application T56) 0.5 <, wherein T34 is the spacing distance of the third lens and the 4th lens on optical axis, and T45 is the 4th lens and the 5th Spacing distance of the lens on optical axis, T56 are the spacing distance of the 5th lens and the 6th lens on optical axis.More specifically, T34, T45 and T56 can further meet 0.04≤T34/ (T45+T56)≤0.28.Meet 0 < T34/ (T45+T56) of conditional < 0.5 is conducive to shortening system overall length, the outer optical path of regulating system axis；The incidence angle for being conducive to reduce off-axis ray, improves imaging Quality.

In the exemplary embodiment, 0 < CT1/CT6 < 2 of conditional can be met according to the optical imaging system of the application, Wherein, CT1 is the first lens in the center thickness on optical axis, and CT6 is the 6th lens in the center thickness on optical axis.More specifically Ground, CT1 and CT6 can further meet 0.5≤CT1/CT6≤1.5, for example, 0.58≤CT1/CT6≤1.47.Meet conditional 0 < CT1/CT6 < 2 is conducive to space on the axis of reasonable distribution system, and in the processing and manufacturing work of the first lens and the 6th lens Preferable balance is obtained between skill and shortening system overall length the two.

In the exemplary embodiment, 0 < of conditional can be met according to the optical imaging system of the application | f4/f+f5/f | < 3, wherein f be optical imaging system total effective focal length, f4 be the 4th lens effective focal length, the 5th lens of f5 it is effective Focal length.More specifically, f, f4 and f5 can further meet 0.07≤| f4/f+f5/f |≤2.97.Meet 0 < of conditional | f4/f+ F5/f | < 3 is conducive to the axial chromatic aberration and chromatic longitudiinal aberration of correction system, improves system imaging quality.

In the exemplary embodiment, conditional TTL/ImgH < 3 can be met according to the optical imaging system of the application, In, TTL is imaging surface distance on optical axis of the first lens object side to optical imaging system, and ImgH is optical imaging system Imaging surface on effective pixel area diagonal line length half.More specifically, TTL and ImgH can further meet 2.51≤TTL/ ImgH≤2.86.Meet conditional TTL/ImgH < 3, be advantageously implemented the miniaturization of mould group, so that the imaging system of the application It is applicable to the installation application scenarios of wider scope.

In the exemplary embodiment, above-mentioned optical imaging system may also include diaphragm, to promote the image quality of camera lens. For example, diaphragm may be provided between the second lens and the third lens.

Optionally, above-mentioned optical imaging system 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 six can be used according to the optical imaging system 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 imagery system System, which is more advantageous to, to be produced and processed and is applicable to the portable electronic products such as smart phone.Optical imagery through the above configuration System has larger field angle, and can be realized the well-corrected to camera lens f- θ distortion, enables the camera lens in biggish sky Between range carry out more accurate space orientation.

In presently filed embodiment, at least one of mirror 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 optical imaging system can be changed, to obtain each result and advantage described in this specification.Example Such as, although being described by taking six lens as an example in embodiments, which is not limited to include six Lens.If desired, the optical imaging system may also include the lens of other quantity.

The specific embodiment for being applicable to the optical imaging system 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 system 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 system of embodiment 1.

As shown in Figure 1, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

First lens E1 has negative power, and object side S1 is concave surface, and image side surface S2 is concave surface, and object side S1 has The point of inflexion；Second lens E2 has positive light coke, and object side S3 is convex surface, and image side surface S4 is concave surface；The third lens E3 has Positive light coke, object side S5 are convex surface, and image side surface S6 is convex surface；4th lens E4 has negative power, and object side S7 is Convex surface, image side surface S8 are concave surface；5th lens E5 has positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface； 6th lens E6 has positive light coke, and object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

Table 1 show the surface types of each lens of the optical imaging system 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 6th lens E6 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-S12₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

Face number

A4

A6

A8

A10

A12

A14

A16

S1

3.8789E-02

-8.9974E-03

1.5495E-03

-1.6421E-04

9.2376E-06

-2.0170E-07

0.0000E+00

S2

4.6976E-02

1.0959E-01

-4.3637E-01

1.1533E+00

-1.4740E+00

9.2584E-01

-2.2624E-01

S3

-1.1370E-01

6.9380E-02

-3.3361E-01

5.5326E-01

-5.4884E-01

2.8841E-01

-6.2976E-02

S4

2.9399E-02

-9.0421E-01

9.0230E+00

-4.8855E+01

1.5062E+02

-2.4120E+02

1.5975E+02

S5

-7.6835E-03

-1.0128E-01

3.0809E-01

-2.7349E+00

1.1572E+01

-2.2155E+01

1.7022E+01

S6

3.8661E-01

-1.7881E+00

5.6016E+00

-1.3182E+01

2.0108E+01

-1.7668E+01

6.7829E+00

S7

-1.6687E-01

0.0000E+00

S8

-2.0608E-02

-6.9399E-02

1.2103E-01

-1.8013E-01

1.8294E-01

-8.4535E-02

1.2868E-02

S9

1.6319E-01

-4.2878E-01

6.9555E-01

-8.0525E-01

5.5190E-01

-1.9189E-01

2.6046E-02

S10

-1.4431E-02

2.3364E-02

1.5164E-02

-7.2296E-02

6.2116E-02

-2.4892E-02

4.2243E-03

S11

-2.5733E-01

1.4362E-01

-7.3239E-02

2.5107E-02

-5.4070E-03

6.3256E-04

-2.8342E-05

S12

-2.7664E-01

1.4113E-01

-6.7653E-02

2.1137E-02

-4.2676E-03

5.0415E-04

-2.7936E-05

Table 2

Table 3 give total effective focal length f of optical imaging system in embodiment 1, each lens effective focal length f1 to f6, at The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in optical axis on image planes S15 On distance TTL and maximum angle of half field-of view HFOV.

f(mm)	1.73	f5(mm)	3.33
				f1(mm)	-1.92	f6(mm)	238.75
f2(mm)	4.37	ImgH(mm)	2.26
				f3(mm)	1.57	TTL(mm)	6.31
f4(mm)	-2.22	HFOV(°)	75.00

Table 3

Optical imaging system in embodiment 1 meets:

(| f1 |+| f3 |)/f=2.02, wherein f is total effective focal length of optical imaging system, and f1 the first lens E1's has Imitate focal length, the effective focal length of f3 the third lens E3；

R12/R11=0.91, wherein R11 is the radius of curvature of the object side S11 of the 6th lens E6, and R12 is the 6th lens The radius of curvature of the image side surface S12 of E6；

DT12/ImgH=0.53, wherein effective half bore of maximum that DT12 is the image side surface S2 of the first lens E1, ImgH For the half of effective pixel area diagonal line length on imaging surface S15；

| f4/f |=1.28, wherein f is total effective focal length of optical imaging system, and f4 is effective coke of the 4th lens E4 Away from；

DT31/DT11=0.24, wherein effective half bore of maximum that DT11 is the object side S1 of the first lens E1, DT31 For effective half bore of maximum of the object side S5 of the third lens E3；

R6/f=-0.59, wherein f is total effective focal length of optical imaging system, and R6 is the image side surface S6 of the third lens E3 Radius of curvature；

T34/ (T45+T56)=0.05, wherein T34 is the interval distance of the third lens E3 and the 4th lens E4 on optical axis From T45 is spacing distance of the 4th lens E4 and the 5th lens E5 on optical axis, and T56 is the 5th lens E5 and the 6th lens E6 Spacing distance on optical axis；

CT1/CT6=1.47, wherein CT1 is the first lens E1 in the center thickness on optical axis, and CT6 is the 6th lens E6 In the center thickness on optical axis；

| f4/f+f5/f |=0.65, wherein f is total effective focal length of optical imaging system, and f4 is having for the 4th lens E4 Imitate focal length, the effective focal length of the 5th lens E5 of f5；

TTL/ImgH=2.79, wherein TTL be the first lens E1 object side S1 to imaging surface S15 on optical axis away from From ImgH is the half of effective pixel area diagonal line length on imaging surface S15.

Fig. 2A shows chromatic curve on the axis of the optical imaging system of embodiment 1, indicates the light warp of different wave length Deviateed by the converging focal point after system.Fig. 2 B shows the astigmatism curve of the optical imaging system of embodiment 1, indicates meridian picture Face bending and sagittal image surface bending.Fig. 2 C shows the ratio chromatism, curve of the optical imaging system of embodiment 1, indicates light Via the deviation of the different image heights after system on imaging surface.A to Fig. 2 C is it is found that optics given by embodiment 1 according to fig. 2 Imaging system can be realized good image quality.

Embodiment 2

Referring to Fig. 3 to Fig. 4 C description according to the optical imaging system 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 system structural schematic diagram.

As shown in figure 3, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

First lens E1 has negative power, and object side S1 is concave surface, and image side surface S2 is concave surface, and object side S1 has The point of inflexion；Second lens E2 has positive light coke, and object side S3 is convex surface, and image side surface S4 is concave surface；The third lens E3 has Positive light coke, object side S5 are convex surface, and image side surface S6 is convex surface；4th lens E4 has positive light coke, and object side S7 is Convex surface, image side surface S8 are convex surface；5th lens E5 has negative power, and object side S9 is concave surface, and image side surface S10 is concave surface； 6th lens E6 has negative power, and object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

Table 4 show the surface types of each lens of the optical imaging system 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 6th lens E6 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

S1

2.7140E-02

-5.5284E-03

8.0324E-04

-6.4223E-05

2.2828E-06

0.0000E+00

S2

2.0936E-01

-1.9048E-01

2.7130E-01

-7.6400E-02

-1.8051E-01

1.8994E-01

-5.5712E-02

S3

-7.3667E-02

7.8211E-03

-9.4895E-02

1.6166E-02

0.0000E+00

S4

3.4394E-01

-3.0256E-01

4.4224E-01

0.0000E+00

S5

3.3423E-03

6.4347E-01

-5.3353E+00

2.5095E+01

-6.4129E+01

8.4331E+01

-4.4490E+01

S6

-3.8660E-02

-1.8084E-02

-3.1362E-02

6.3575E-01

-2.2774E+00

3.1820E+00

-1.4816E+00

S7

-2.6658E-02

-4.9377E-05

-3.2641E-02

-8.0118E-03

0.0000E+00

S8

-2.6949E-01

2.9369E-01

-1.8004E-01

5.6373E-02

0.0000E+00

S9

-1.8687E-01

-6.3499E-02

9.6446E-02

6.5017E-03

-1.4005E-02

0.0000E+00

S10

4.9032E-02

-1.2367E-01

8.6827E-02

-2.3717E-02

1.5391E-03

2.0952E-04

-9.7410E-06

S11

-2.4561E-01

2.1642E-01

-1.6000E-01

7.0659E-02

-1.7283E-02

2.1886E-03

-1.1208E-04

S12

-2.7674E-01

1.8167E-01

-1.0062E-01

3.5115E-02

-7.5992E-03

9.1498E-04

-4.4634E-05

Table 5

Table 6 give total effective focal length f of optical imaging system in embodiment 2, each lens effective focal length f1 to f6, at The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in optical axis on image planes S15 On distance TTL and maximum angle of half field-of view HFOV.

f(mm)	1.74	f5(mm)	-3.25
				f1(mm)	-1.98	f6(mm)	-82.54
f2(mm)	7.19	ImgH(mm)	2.26
				f3(mm)	2.30	TTL(mm)	6.31
f4(mm)	2.64	HFOV(°)	74.98

Table 6

Fig. 4 A shows chromatic curve on the axis of the optical imaging system of embodiment 2, indicates the light warp of different wave length Deviateed by the converging focal point after system.Fig. 4 B shows the astigmatism curve of the optical imaging system of embodiment 2, indicates meridian picture Face bending and sagittal image surface bending.Fig. 4 C shows the ratio chromatism, curve of the optical imaging system of embodiment 2, indicates light Via the deviation of the different image heights after system on imaging surface.According to Fig. 4 A to Fig. 4 C it is found that optics given by embodiment 2 Imaging system can be realized good image quality.

Embodiment 3

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

As shown in figure 5, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

First lens E1 has negative power, and object side S1 is concave surface, and image side surface S2 is concave surface, and object side S1 has The point of inflexion；Second lens E2 has positive light coke, and object side S3 is convex surface, and image side surface S4 is concave surface；The third lens E3 has Positive light coke, object side S5 are convex surface, and image side surface S6 is convex surface；4th lens E4 has negative power, and object side S7 is Convex surface, image side surface S8 are concave surface；5th lens E5 has positive light coke, and object side S9 is convex surface, and image side surface S10 is concave surface； 6th lens E6 has positive light coke, and object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

Table 7 show the surface types of each lens of the optical imaging system 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 6th lens E6 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

S1

-1.8086E-03

1.7893E-02

-9.2208E-03

2.5388E-03

-4.0577E-04

3.5566E-05

-1.3152E-06

S2

3.1268E-02

-7.3563E-03

7.2753E-02

-1.4060E-02

2.7108E-22

-2.3633E-24

-1.6856E-27

S3

-1.3850E-01

-2.1378E-02

-2.0809E-02

2.4155E-02

2.3883E-21

4.3284E-24

-1.6856E-27

S4

-1.8729E-01

9.1866E-02

-1.1819E-02

3.5080E-02

-7.0044E-22

-2.0055E-25

-1.6856E-27

S5

-2.4827E-02

-1.0057E-02

1.7833E-01

-2.7551E-01

5.7952E-22

-2.1355E-25

-1.6856E-27

S6

-3.2898E-03

-1.3290E-01

2.1578E-01

-1.7626E-01

-3.0787E-22

-2.1355E-25

-1.6856E-27

S7

-3.6830E-01

2.5004E-02

-7.8481E-02

-3.5800E-02

-4.4396E-22

-2.1355E-25

-1.6856E-27

S8

-9.1318E-02

5.1207E-03

1.6487E-02

2.0170E-03

-1.0875E-21

-9.2854E-25

-1.6856E-27

S9

2.9996E-02

-2.7334E-02

1.1744E-02

-8.8359E-03

-5.6061E-22

-1.4932E-24

-1.6856E-27

S10

-4.2558E-02

4.6319E-02

-3.5690E-02

1.3650E-02

-6.0896E-03

9.8361E-04

-3.8704E-05

S11

-1.0984E-01

2.6530E-02

-4.7794E-03

-3.2386E-04

0.0000E+00

S12

-1.0928E-01

2.0675E-02

-2.7183E-03

-3.1839E-04

0.0000E+00

Table 8

Table 9 give total effective focal length f of optical imaging system in embodiment 3, each lens effective focal length f1 to f6, at The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in optical axis on image planes S15 On distance TTL and maximum angle of half field-of view HFOV.

f(mm)	1.69	f5(mm)	3.96
				f1(mm)	-1.96	f6(mm)	43.29
f2(mm)	9.70	ImgH(mm)	2.21
				f3(mm)	1.63	TTL(mm)	6.32
f4(mm)	-2.40	HFOV(°)	75.00

Table 9

Fig. 6 A shows chromatic curve on the axis of the optical imaging system of embodiment 3, indicates the light warp of different wave length Deviateed by the converging focal point after system.Fig. 6 B shows the astigmatism curve of the optical imaging system of embodiment 3, indicates meridian picture Face bending and sagittal image surface bending.Fig. 6 C shows the ratio chromatism, curve of the optical imaging system of embodiment 3, indicates light Via the deviation of the different image heights after system on imaging surface.According to Fig. 6 A to Fig. 6 C it is found that optics given by embodiment 3 Imaging system can be realized good image quality.

Embodiment 4

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

As shown in fig. 7, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

First lens E1 has negative power, 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 convex surface, and image side surface S4 is convex surface；The third lens E3 has positive light coke, and object side S5 is Convex surface, image side surface S6 are convex surface；4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface；The Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is concave surface；6th lens E6 has positive light coke, Its object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.From object Light sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

Table 10 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system 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 6th lens E6 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.

Table 11

Table 12 give total effective focal length f of optical imaging system in embodiment 4, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL and maximum angle of half field-of view HFOV on axis.

f(mm)	1.73	f5(mm)	7.31
				f1(mm)	-2.10	f6(mm)	17.62
f2(mm)	9.96	ImgH(mm)	2.25
				f3(mm)	1.48	TTL(mm)	6.32
f4(mm)	-2.19	HFOV(°)	75.00

Table 12

Fig. 8 A shows chromatic curve on the axis of the optical imaging system of embodiment 4, indicates the light warp of different wave length Deviateed by the converging focal point after system.Fig. 8 B shows the astigmatism curve of the optical imaging system of embodiment 4, indicates meridian picture Face bending and sagittal image surface bending.Fig. 8 C shows the ratio chromatism, curve of the optical imaging system of embodiment 4, indicates light Via the deviation of the different image heights after system on imaging surface.According to Fig. 8 A to Fig. 8 C it is found that optics given by embodiment 4 Imaging system can be realized good image quality.

Embodiment 5

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

As shown in figure 9, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

Table 13 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system 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 6th lens E6 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.

Table 14

Table 15 give total effective focal length f of optical imaging system in embodiment 5, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL and maximum angle of half field-of view HFOV on axis.

f(mm)	1.73	f5(mm)	6.69
				f1(mm)	-2.16	f6(mm)	20.51
f2(mm)	13.08	ImgH(mm)	2.52
				f3(mm)	1.45	TTL(mm)	6.32
f4(mm)	-2.16	HFOV(°)	75.00

Table 15

Figure 10 A shows chromatic curve on the axis of the optical imaging system of embodiment 5, indicates the light warp of different wave length Deviateed by the converging focal point after system.Figure 10 B shows the astigmatism curve of the optical imaging system of embodiment 5, indicates meridian Curvature of the image and sagittal image surface bending.Figure 10 C shows the ratio chromatism, curve of the optical imaging system of embodiment 5, indicates Light via the different image heights after system on imaging surface deviation.According to Figure 10 A to Figure 10 C it is found that given by embodiment 5 Optical imaging system can be realized good image quality.

Embodiment 6

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

As shown in figure 11, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

First lens E1 has negative power, and object side S1 is convex surface, and image side surface S2 is concave surface, and object side S1 has The point of inflexion；Second lens E2 has positive light coke, and object side S3 is concave surface, and image side surface S4 is convex surface；The third lens E3 has Positive light coke, object side S5 are convex surface, and image side surface S6 is convex surface；4th lens E4 has negative power, and object side S7 is Concave surface, image side surface S8 are concave surface；5th lens E5 has positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface； 6th lens E6 has positive light coke, and object side S11 is convex surface, and image side surface S12 is concave surface.Optical filter E7 has object side S13 and image side surface S14.Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

Table 16 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system 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 6th lens E6 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

S1

-1.3728E-01

4.7018E-02

-9.4654E-03

8.3490E-04

1.6495E-05

-5.0868E-06

0.0000E+00

S2

-1.8970E-01

5.5253E-01

-1.9840E+00

5.1765E+00

-7.6822E+00

6.1765E+00

-2.0557E+00

S3

-5.7572E-02

1.5656E-02

-1.9829E-01

5.6379E-01

-9.7488E-01

8.3914E-01

-2.6193E-01

S4

-3.6235E-01

1.3603E+00

-4.3505E+00

9.5178E+00

-1.2777E+01

9.4129E+00

-2.7486E+00

S5

-2.6636E-01

1.3794E+00

-4.2898E+00

8.7164E+00

-1.1001E+01

7.6177E+00

-2.1779E+00

S6

-1.0422E-01

5.0081E-01

-1.2302E+00

1.8786E+00

-1.5768E+00

5.2483E-01

3.3229E-02

S7

-5.1439E-01

1.2368E+00

-2.7983E+00

4.9128E+00

-5.8119E+00

3.9294E+00

-1.0911E+00

S8

-1.6044E-01

5.2984E-01

-9.4259E-01

1.1834E+00

-9.5166E-01

4.2046E-01

-7.5759E-02

S9

-2.7765E-02

1.1489E-01

-3.0638E-01

5.3037E-01

-5.6819E-01

3.5035E-01

-9.5849E-02

S10

-1.3211E-01

1.6198E-01

-1.2038E-01

3.9230E-02

2.4422E-02

-1.8644E-02

3.7126E-03

S11

-1.7979E-01

5.7842E-02

-5.9300E-02

3.9939E-02

-1.5914E-02

3.3262E-03

-2.7930E-04

S12

-1.0322E-01

-2.4088E-02

1.7694E-02

-6.0595E-03

9.5983E-04

-6.5395E-05

-1.2824E-06

Table 17

Table 18 give total effective focal length f of optical imaging system in embodiment 6, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL and maximum angle of half field-of view HFOV on axis.

f(mm)	1.73	f5(mm)	4.46
				f1(mm)	-2.48	f6(mm)	11.51
f2(mm)	12.16	ImgH(mm)	2.25
				f3(mm)	1.54	TTL(mm)	6.32
f4(mm)	-2.01	HFOV(°)	75.00

Table 18

Figure 12 A shows chromatic curve on the axis of the optical imaging system of embodiment 6, indicates the light warp of different wave length Deviateed by the converging focal point after system.Figure 12 B shows the astigmatism curve of the optical imaging system of embodiment 6, indicates meridian Curvature of the image and sagittal image surface bending.Figure 12 C shows the ratio chromatism, curve of the optical imaging system of embodiment 6, indicates Light via the different image heights after system on imaging surface deviation.According to figure 12 A to figure 12 C it is found that given by embodiment 6 Optical imaging system can be realized good image quality.

Embodiment 7

The optical imaging system according to the embodiment of the present application 7 is described referring to Figure 13 to Figure 14 C.Figure 13 shows root According to the structural schematic diagram of the optical imaging system of the embodiment of the present application 7.

As shown in figure 13, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

Table 19 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 7 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 of the first lens E1 into the 6th lens E6 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

S1

6.6242E-02

-3.3370E-02

1.2856E-02

-3.3074E-03

5.2777E-04

-4.6899E-05

1.7988E-06

S2

1.7289E-01

2.6002E-01

-1.2571E+00

3.9944E+00

-6.7003E+00

5.8453E+00

-2.0395E+00

S3

-1.2937E-01

-1.0181E-01

1.2353E-01

-2.1250E-01

5.8529E-02

5.1753E-02

0.0000E+00

S4

-2.0000E-01

-9.1378E-01

7.0520E+00

-2.8355E+01

6.6393E+01

-8.2367E+01

4.2439E+01

S5

-6.2672E-02

-1.7569E-01

7.0117E-01

-1.9445E+00

3.5736E+00

-3.3556E+00

1.3508E+00

S6

3.2901E-01

-1.7365E+00

5.8770E+00

-1.2898E+01

1.7097E+01

-1.2381E+01

3.7937E+00

S7

-3.2208E-01

-8.3954E-01

3.4065E+00

-6.9658E+00

8.3531E+00

-5.2207E+00

1.1965E+00

S8

-7.1938E-03

-4.8840E-01

1.2445E+00

-1.7342E+00

1.4600E+00

-6.8792E-01

1.3788E-01

S9

9.4751E-02

-1.0398E-02

-2.9357E-01

5.5355E-01

-5.2074E-01

2.3985E-01

-4.1725E-02

S10

-1.6615E-01

2.3614E-01

-2.5416E-01

2.0895E-01

-1.2379E-01

3.8217E-02

-4.0392E-03

S11

-2.0641E-01

1.2359E-01

-1.1206E-01

6.8511E-02

-2.5015E-02

4.8300E-03

-3.8077E-04

S12

-9.6668E-02

1.4769E-02

-1.2061E-02

7.3902E-03

-2.3516E-03

3.5551E-04

-2.0703E-05

Table 20

Table 21 give total effective focal length f of optical imaging system in embodiment 7, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL and maximum angle of half field-of view HFOV on axis.

f(mm)	1.73	f5(mm)	6.90
				f1(mm)	-1.97	f6(mm)	7.81
f2(mm)	12.48	ImgH(mm)	2.26
				f3(mm)	1.48	TTL(mm)	6.32
f4(mm)	-2.63	HFOV(°)	75.00

Table 21

Figure 14 A shows chromatic curve on the axis of the optical imaging system of embodiment 7, indicates the light warp of different wave length Deviateed by the converging focal point after system.Figure 14 B shows the astigmatism curve of the optical imaging system of embodiment 7, indicates meridian Curvature of the image and sagittal image surface bending.Figure 14 C shows the ratio chromatism, curve of the optical imaging system of embodiment 7, indicates Light via the different image heights after system on imaging surface deviation.According to Figure 14 A to Figure 14 C it is found that given by embodiment 7 Optical imaging system can be realized good image quality.

Embodiment 8

The optical imaging system according to the embodiment of the present application 8 is described referring to Figure 15 to Figure 16 C.Figure 15 shows root According to the structural schematic diagram of the optical imaging system of the embodiment of the present application 8.

As shown in figure 15, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

Table 22 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 8 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 of the first lens E1 into the 6th lens E6 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.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

5.8961E-02

-1.8038E-02

3.7812E-03

-4.9584E-04

3.6872E-05

-1.1425E-06

0.0000E+00

S2

5.2644E-01

-1.0272E+00

1.8706E+00

-2.2146E+00

1.5940E+00

-6.5675E-01

1.1906E-01

S3

-1.3428E-01

-4.2384E-02

5.3265E-02

-8.1174E-02

-1.8599E-01

3.0694E-01

-1.1862E-01

S4

1.0460E-01

-3.0703E-01

3.0985E+00

-1.3344E+01

3.4867E+01

-4.8807E+01

3.0534E+01

S5

2.5924E-02

1.9358E-02

-1.5000E-01

3.7336E-02

1.3446E+00

-2.9428E+00

1.9446E+00

S6

5.1529E-02

-3.0792E-01

1.1797E+00

-3.1555E+00

4.7836E+00

-3.7345E+00

1.1838E+00

S7

2.3038E-03

-4.2619E-02

-6.3385E-04

0.0000E+00

S8

-1.1118E-01

-9.4162E-01

2.2884E+00

-2.5754E+00

1.5739E+00

-4.9919E-01

6.6423E-02

S9

-6.8605E-02

-7.2182E-01

1.3504E+00

-1.0726E+00

3.1503E-01

5.6041E-02

-3.6522E-02

S10

1.2897E-01

-1.8518E-01

1.3315E-01

-4.9258E-02

6.4188E-03

1.0820E-03

-3.0823E-04

S11

-2.1262E-01

1.7599E-01

-1.2950E-01

6.0263E-02

-1.6146E-02

2.3123E-03

-1.3896E-04

S12

-2.6573E-01

1.7275E-01

-9.8466E-02

3.6102E-02

-8.4737E-03

1.1725E-03

-7.2671E-05

Table 23

Table 24 give total effective focal length f of optical imaging system in embodiment 8, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL, maximum angle of half field-of view HFOV and F-number Fno on axis.

f(mm)	1.73	f5(mm)	-2.89
				f1(mm)	-1.85	f6(mm)	-43.05
f2(mm)	7.10	ImgH(mm)	2.26
				f3(mm)	1.86	TTL(mm)	6.31
f4(mm)	3.01	HFOV(°)	75.00

Table 24

Figure 16 A shows chromatic curve on the axis of the optical imaging system of embodiment 8, indicates the light warp of different wave length Deviateed by the converging focal point after system.Figure 16 B shows the astigmatism curve of the optical imaging system of embodiment 8, indicates meridian Curvature of the image and sagittal image surface bending.Figure 16 C shows the ratio chromatism, curve of the optical imaging system of embodiment 8, indicates Light via the different image heights after system on imaging surface deviation.According to Figure 16 A to Figure 16 C it is found that given by embodiment 8 Optical imaging system can be realized good image quality.

Embodiment 9

The optical imaging system according to the embodiment of the present application 9 is described referring to Figure 17 to Figure 18 C.Figure 17 shows roots According to the structural schematic diagram of the optical imaging system of the embodiment of the present application 9.

As shown in figure 17, according to the optical imaging system of the application illustrative embodiments along optical axis by object side to image side according to Sequence include: the first lens E1, the second lens E2, diaphragm STO, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, optical filter E7 and imaging surface S15.

Table 25 shows surface type, radius of curvature, thickness, the material of each lens of the optical imaging system of embodiment 9 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 of the first lens E1 into the 6th lens E6 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.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.6849E-02

-5.4891E-03

8.1234E-04

-6.6414E-05

2.4615E-06

0.0000E+00

S2

1.3567E-01

9.3214E-02

-3.2542E-01

6.8283E-01

-7.5368E-01

4.2346E-01

-9.5003E-02

S3

-7.2453E-02

-9.9936E-03

-8.1430E-02

1.5013E-02

0.0000E+00

S4

2.7698E-01

-2.4114E-01

3.1972E-01

0.0000E+00

S5

6.4569E-03

6.1327E-01

-5.8173E+00

3.0501E+01

-8.5761E+01

1.2308E+02

-7.0595E+01

S6

-1.1085E-02

-3.5445E-01

1.9957E+00

-5.7296E+00

8.8371E+00

-6.9920E+00

2.3000E+00

S7

-4.0058E-02

2.2695E-02

-4.0907E-02

-7.8269E-03

0.0000E+00

S8

-2.2317E-01

2.1373E-01

-1.0788E-01

3.0731E-02

0.0000E+00

S9

-1.2926E-01

-7.6342E-02

8.5970E-02

5.0823E-03

-1.0631E-02

0.0000E+00

S10

4.7440E-02

-1.2329E-01

8.6812E-02

-2.3252E-02

1.4935E-03

4.3597E-05

3.5472E-05

S11

-2.5481E-01

2.2279E-01

-1.7203E-01

8.1064E-02

-2.1211E-02

2.8729E-03

-1.5760E-04

S12

-2.6295E-01

1.6613E-01

-9.0656E-02

3.0858E-02

-6.4005E-03

7.3225E-04

-3.3813E-05

Table 26

Table 27 give total effective focal length f of optical imaging system in embodiment 9, each lens effective focal length f1 to f6, The object side S1 to imaging surface S15 of the half ImgH of effective pixel area diagonal line length, the first lens E1 are in light on imaging surface S15 Distance TTL, maximum angle of half field-of view HFOV and F-number Fno on axis.

Table 27

Figure 18 A shows chromatic curve on the axis of the optical imaging system of embodiment 9, indicates the light warp of different wave length Deviateed by the converging focal point after system.Figure 18 B shows the astigmatism curve of the optical imaging system of embodiment 9, indicates meridian Curvature of the image and sagittal image surface bending.Figure 18 C shows the ratio chromatism, curve of the optical imaging system of embodiment 9, indicates Light via the different image heights after system on imaging surface deviation.According to Figure 18 A to Figure 18 C it is found that given by embodiment 9 Optical imaging system can be realized good image quality.

To sum up, embodiment 1 to embodiment 9 meets relationship shown in table 28 respectively.

Conditional embodiment	1	2	3	4	5	6	7	8	9
										(\|f1\|+\|f3\|)/f	2.02	2.46	2.12	2.08	2.10	2.33	2.00	2.15	2.47
R12/R11	0.91	0.85	1.02	1.06	1.04	1.11	1.25	0.82	0.87
										DT12/ImgH	0.53	0.52	0.52	0.47	0.42	0.45	0.44	0.55	0.52
\|f4/f\|	1.28	1.52	1.42	1.27	1.25	1.16	1.52	1.74	1.82
										DT31/DT11	0.24	0.25	0.32	0.34	0.34	0.41	0.35	0.25	0.24
R6/f	-0.59	-0.90	-0.93	-0.77	-0.78	-0.85	-0.68	-0.69	-0.92
										T34/(T45+T56)	0.05	0.21	0.06	0.05	0.04	0.06	0.05	0.09	0.28
CT1/CT6	1.47	0.91	0.62	0.58	0.63	1.02	0.68	0.81	0.87
										\|f4/f+f5/f\|	0.65	0.35	0.92	2.97	2.63	1.42	2.48	0.07	0.56
TTL/ImgH	2.79	2.79	2.86	2.81	2.51	2.80	2.80	2.80	2.77
										HFOV(°)	75.00	74.98	75.00	75.00	75.00	75.00	75.00	75.00	75.01

Table 28

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 imagery system described above System.

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 has similar function with (but being not limited to) disclosed herein Can technical characteristic 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, the third lens, along optical axis 1. optical imaging system Four lens, the 5th lens and the 6th lens, which is characterized in that

First lens have negative power, and image side surface is concave surface；

Second lens have positive light coke；

The third lens have positive light coke, and object side and image side surface are convex surface；

4th lens have focal power；

5th lens have focal power；

6th lens have focal power, and object side is convex surface, and image side surface is concave surface；

On the effective half bore DT12 of maximum of the image side surface of first lens and the imaging surface of the optical imaging system effectively The half ImgH of pixel region diagonal line length meets 0 < DT12/ImgH < 1.
2. optical imaging system according to claim 1, which is characterized in that the effective focal length f1 of first lens, institute State the third lens effective focal length f3 and the optical imaging system total effective focal length f meet 1 < (| f1 |+| f3 |)/f < 3.
3. optical imaging system according to claim 1, which is characterized in that the effective focal length f4 of the 4th lens and institute The total effective focal length f for stating optical imaging system meets 1 < | f4/f | < 2.
4. optical imaging system according to claim 3, which is characterized in that the effective focal length f4 of the 4th lens, institute Total effective focal length f of the effective focal length f5 and the optical imaging system that state the 5th lens meet 0 < | f4/f+f5/f | < 3.
5. optical imaging system according to claim 1, which is characterized in that the maximum of the object side of first lens has The effective half bore DT31 of maximum for imitating the object side of half bore DT11 and the third lens meets 0 < DT31/DT11 < 1.
6. optical imaging system according to claim 1, which is characterized in that first lens are on the optical axis Heart thickness CT1 and the 6th lens are in the 0 < CT1/CT6 < 2 of center thickness CT6 satisfaction on the optical axis.
7. optical imaging system according to claim 1, which is characterized in that the third lens and the 4th lens exist Spacing distance T34, the spacing distance T45 of the 4th lens and the 5th lens on the optical axis on the optical axis with The spacing distance T56 of 5th lens and the 6th lens on the optical axis meets 0 < T34/ (T45+T56) < 0.5.
8. optical imaging system according to claim 1, which is characterized in that the curvature of the image side surface of the third lens half Total effective focal length f of diameter R6 and the optical imaging system meets -1.5 < R6/f < 0.
9. optical imaging system according to claim 1, which is characterized in that the curvature of the object side of the 6th lens half The radius of curvature R 12 of the image side surface of diameter R11 and the 6th lens meets 0 < R12/R11 < 2.
10. optical imaging system according to claim 1, which is characterized in that the object side of first lens has anti- Qu Dian.
11. optical imaging system according to claim 1, which is characterized in that the object side of first lens is to described The imaging surface of optical imaging system valid pixel on the imaging surface of distance TTL and the optical imaging system on the optical axis The half ImgH of region diagonal line length meets TTL/ImgH < 3.
12. optical imaging system according to any one of claim 1 to 11, which is characterized in that the optical imagery system The maximum angle of half field-of view HFOV of system meets HFOV >=70 °.
13. optical imaging system, along optical axis by object side to image side sequentially include: the first lens, the second lens, the third lens, 4th lens, the 5th lens and the 6th lens, which is characterized in that

First lens have negative power, and image side surface is concave surface；

Second lens have positive light coke；

The third lens have positive light coke, and object side and image side surface are convex surface；

4th lens have focal power；

5th lens have focal power；

6th lens have focal power, and object side is convex surface, and image side surface is concave surface；

Effective focal length f1, the effective focal length f3 of the third lens and always the having for the optical imaging system of first lens 1 < of effect focal length f satisfaction (| f1 |+| f3 |)/f < 3；And

The object side of first lens to the optical imaging system distance TTL of the imaging surface on the optical axis with it is described The half ImgH of effective pixel area diagonal line length meets TTL/ImgH < 3 on the imaging surface of optical imaging system.
14. optical imaging system according to claim 13, which is characterized in that the object side of first lens has anti- Qu Dian.
15. optical imaging system according to claim 13, which is characterized in that the maximum of the image side surface of first lens The half ImgH of effective pixel area diagonal line length meets 0 on the imaging surface of effective half bore DT12 and the optical imaging system < DT12/ImgH < 1.
16. optical imaging system according to claim 13, which is characterized in that maximum half view of the optical imaging system Rink corner HFOV meets HFOV >=70 °.
17. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that the 4th lens Total effective focal length f of effective focal length f4 and the optical imaging system meets 1 < | f4/f | < 2.
18. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that the 4th lens Total effective focal length f of effective focal length f4, the effective focal length f5 of the 5th lens and the optical imaging system meet 0 < | f4/ F+f5/f | < 3.
19. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that first lens The effective half bore DT31 of maximum of the object side of the effective half bore DT11 of the maximum and the third lens of object side meets 0 < DT31/DT11 < 1.
20. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that first lens in Center thickness CT1 and the 6th lens on the optical axis meet 0 < CT1/CT6 in the center thickness CT6 on the optical axis < 2.
21. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that the third lens and Spacing distance T34, fourth lens and fiveth lens of 4th lens on the optical axis are on the optical axis Spacing distance T56 on the optical axis of spacing distance T45 and the 5th lens and the 6th lens meet 0 < T34/ (T45+T56) 0.5 <.
22. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that the third lens The radius of curvature R 6 of image side surface and total effective focal length f of the optical imaging system meet -1.5 < R6/f < 0.
23. optical imaging system described in any one of 3 to 16 according to claim 1, which is characterized in that the 6th lens The radius of curvature R 12 of the image side surface of the radius of curvature R 11 of object side and the 6th lens meets 0 < R12/R11 < 2.