CN109597188A

CN109597188A - Pick-up lens group

Info

Publication number: CN109597188A
Application number: CN201910116918.5A
Authority: CN
Inventors: 周进; 邢天祥; 吕赛锋; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2019-02-13
Filing date: 2019-02-13
Publication date: 2019-04-09
Anticipated expiration: 2039-02-13
Also published as: CN109597188B

Abstract

Provide a kind of pick-up lens group.The pick-up lens group sequentially includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens by object side to image side along optical axis.Wherein, first lens have positive light coke, and object side is convex surface；Second lens have negative power；The third lens have focal power；4th lens have focal power；5th lens have focal power；6th lens have positive light coke；And the 7th lens have negative power, object side is convex surface, and image side surface is concave surface.Wherein, at least one side of at least one lens of first lens into the 7th lens is non-rotationally-symmetric aspherical.

Description

Pick-up lens group

Technical field

This application involves a kind of pick-up lens groups, more particularly, to a kind of pick-up lens group including seven lens.

Background technique

Recently, the fast development of the electronic products such as smart phone, tablet computer makes the demand of mobile lens increasingly Greatly, requirement of the people to the image quality of camera lens is also higher and higher.The trend constantly pushes portable electronic product to small-sized Change development.In order to meet the needs of market, camera lens needs Bao Er little as far as possible, thereby increases design difficulty.At the same time, with The raising of image sensor performance and the reduction of size, the design freedom of corresponding camera lens is smaller and smaller, so that design difficulty It is further all to increase.

Summary of the invention

In order to reduce design difficulty, the application proposes to add in the case where keeping the number of camera lens of pick-up lens group constant Enter the design of free form surface, to increase freedom degree number by increasing non-rotationally-symmetric component, to realize to meridian picture The correction of difference and sagitta of arc aberration and off-axis aberration.

According to the one aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis By object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and 7th lens.Wherein, the first lens can have positive light coke, and object side is convex surface；Second lens can have negative power；The Three lens can have positive light coke or negative power；4th lens can have positive light coke or negative power；5th lens can have There are positive light coke or negative power；6th lens can have positive light coke；And the 7th lens can have negative power, object side Face is convex surface, and image side surface is concave surface.Wherein, at least one side of at least one lens of first lens into the 7th lens is non-rotation Turn symmetrical aspherical.

According to the application embodiment, the effective focal length fx and pick-up lens group of the X-direction of pick-up lens group Y direction effective focal length fy between can meet 0.90 ﹤ fx/fy ﹤ 1.10.

According to the application embodiment, the radius of curvature R 13 of the object side of the 7th lens and the picture of the 7th lens 1.50 < R13/R14 < 3.00 can be met between the radius of curvature R 14 of side.

According to the application embodiment, the airspace T45 and of the 4th lens and the 5th lens on optical axis Five lens and the 6th lens can meet 1.00 < T45/T56 < 3.50 between the airspace T56 on optical axis.

According to the application embodiment, the radius of curvature R 8 of the image side surface of the 4th lens and the object side of the 5th lens 0.30 < R8/R9 < 2.00 can be met between the radius of curvature R 9 in face.

According to the application embodiment, the intersection point of the object sides of the 5th lens and optical axis to the object side of the 5th lens The intersection point of the image side surface and optical axis of distance SAG51 and the 5th lens is to the 5th lens on axis between the effective radius vertex in face 0.50 < SAG51/SAG52 < 1.50 can be met between distance SAG52 on axis between the effective radius vertex of image side surface.

According to the application embodiment, distance on the object side to the axis of the image side surface of the 7th lens of the first lens The airspace of TD and the first lens into the 7th lens between arbitrary neighborhood two lens with focal power on optical axis ∑ AT/TD < 0.35 can be met between summation ∑ AT.

According to the application embodiment, the Y direction of the effective focal length f6 and pick-up lens group of the 6th lens 1.00 < f6/fy < 2.50 can be met between effective focal length fy.

According to the application embodiment, the curvature of the object side of the effective focal length f6 and the 7th lens of the 6th lens 1.50 < f6/R13 < 4.50 can be met between radius R13.

According to the application embodiment, center thickness CT1 and first lens and of first lens on optical axis Two lens can meet 9.00 < CT1/T12 < 12.00 between the airspace T12 on optical axis.

According to the application embodiment, center thickness CT4 and fiveth lens of the 4th lens on optical axis are in light 0.50 < CT4/CT5 < 2.00 can be met between center thickness CT5 on axis.

According to the application embodiment, the imaging surface of the object side of the first lens to pick-up lens group is on optical axis Distance TTL and pick-up lens group imaging surface on effective pixel area diagonal line length half ImgH between can meet TTL/ ImgH<1.60。

According to the application embodiment, the object of center thickness CT5 and first lens of the 5th lens on optical axis 4.00 < CT5*100/TTL < 10.00 can be met between distance TTL on side to the axis of the imaging surface of pick-up lens group.

This application provides a kind of large apertures that Random Curved Surface Designing is added, ultra-thin seven chips optical camera lens as a result, Group.Freedom degree by increasing pick-up lens group optimizes processing to pick-up lens group, reduces the aberration of pick-up lens group, So that there is good image quality according to the pick-up lens group of presently filed embodiment, it is suitable for various portable electrics Sub- product.

Detailed description of the invention

Below in conjunction with attached drawing, the principle of present inventive concept is explained by describing the non-limiting embodiment of the application. It should be appreciated that attached drawing is intended to show that the illustrative embodiments of the application rather than is limited.Wherein, attached drawing is for providing The present application design is further understood, and is incorporated in specification and forms part of this specification.It is identical in attached drawing Appended drawing reference indicate identical feature.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. 2 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 1 in first quartile；

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

Fig. 4 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 2 in first quartile；

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

Fig. 6 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 3 in first quartile；

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

Fig. 8 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 4 in first quartile；

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

Figure 10 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 5 in first quartile；

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

Figure 12 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 6 in first quartile；

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

Figure 14 schematically shows situation of the RMS spot diameter of the pick-up lens group of embodiment 7 in first quartile.

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 at least convex surface near axis area；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is at least concave surface near axis area.In each lens, it is known as near the surface of subject The object side of the lens；And in each lens, the image side surface of the lens is known as near the surface of imaging surface.

Herein, it is Z-direction that we, which define and are parallel to the direction of optical axis, vertical with Z axis and in the meridional plane Direction be Y direction, it is vertical with Z axis and be located at sagittal plane in direction be X-direction.Unless otherwise stated, this Each mark of reference in text in addition to the mark of reference for being related to visual field indicates the characteristic parameter of the Y direction along pick-up lens Value.For example, in case of no particular description, the R10 in conditional " R10/R10x " indicates the Y of the image side surface of the 5th lens The radius of curvature of axis direction, R10x indicate the radius of curvature of the X-direction of the image side surface of the 5th lens.

It will also be appreciated that when used in this manual, term " comprising ", " including ", " having ", "comprising" And/or " including " indicates there is stated feature, element and/or component, but does not preclude the presence or addition of one or more A other feature, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in When after the list of listed feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when description When presently filed embodiment, " one or more embodiments of the application " are indicated using "available".Also, term is " exemplary " 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 feature of the application, principle and other aspects are described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Pick-up lens group according to the illustrative embodiments of the application may include such as seven lens with focal power, That is, the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens.Seven lens edges Object side to image side sequential of the optical axis by pick-up lens group, can have airspace between each adjacent lens.

In the exemplary embodiment, the first lens can have positive light coke, and object side is convex surface；Second lens can have There is negative power, image side surface is concave surface；The third lens can have focal power, and object side is concave surface, and image side surface is convex surface；The Four lens can have focal power, and object side is concave surface, and image side surface is convex surface；5th lens can have negative power, object side Face is concave surface；6th lens can have positive light coke, and object side and image side surface are convex surface；7th lens can have negative light focus Degree, object side are convex surface, and image side surface is concave surface.By reasonably control each constituent element of imaging system focal power it is positive and negative Distribution, can effectively balance control system low order aberration, and can reduce the sensibility of tolerance, maintain the small-sized of system Change.

In addition, in this application, it can be by the object side of at least one lens of first lens into the 7th lens and/or picture Side is set as non-rotationally-symmetric aspherical, so as to non-rotationally-symmetric aspherical promote image quality by introducing. It is non-rotationally-symmetric it is aspherical rotational symmetry it is aspherical on the basis of increase non-rotational symmetry component.In lens system Introduce it is non-rotationally-symmetric it is aspherical be conducive to meridian aberration outside axis and sagitta of arc aberration while effectively correcting, thus to light The performance of system, which has, greatly promotes facilitation.In addition, passing through the positive light coke of the first lens and bearing for the 7th lens Focal power can be effectively reduced the aberration of peripheral field while increasing light passing amount.Simultaneously as the first lens have just Focal power is beneficial to the focal power distribution of entire lens group, avoids the concentrations of focal power, so that it is flat to facilitate lens group Weigh chromatic longitudiinal aberration and lateral chromatic aberration.

In the exemplary embodiment, the pick-up lens group of the application can meet 0.90 ﹤ fx/fy ﹤ 1.10 of conditional, In, fx is the effective focal length of the X-direction of pick-up lens group, and fy is the effective focal length of the Y direction of pick-up lens group.More specifically Ground can further meet 0.95≤fx/fy≤1.03 between fx and fy.By the focal length for reasonably matching X-direction and Y-direction Value can promote the freedom degree of optimization, and then pass through the freely empty of optimization on the basis of breaking traditional aspherical optimization method Between realize pick-up lens group synthesis aberration balance, realize on axis, the correction of off-axis aberration, further promote shooting image Image quality.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 1.50 < R13/R14 < 3.00, In, R13 is the radius of curvature of the object side of the 7th lens, and R14 is the radius of curvature of the image side surface of the 7th lens.More specifically, 1.68≤R13/R14≤2.54 can further be met between R13 and R14.By the object side for reasonably limiting the 7th lens The ratio range of radius of curvature and the radius of curvature of image side surface can effectively constrain the shape of the 7th lens, and then effectively The object side of the 7th lens and the aberration contribution rate of image side surface are controlled, pick-up lens group aberration relevant to aperture band is balanced, into And effectively promote the image quality of pick-up lens group.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 1.00 < T45/T56 < 3.50, In, T45 is the airspace of the 4th lens and the 5th lens on optical axis, and T56 is the 5th lens and the 6th lens on optical axis Airspace.More specifically, can further meet 1.41≤T45/T56≤3.04 between T45 and T56.By saturating by the 4th Airspace control of the airspace and the 5th lens and the 6th lens of mirror and the 5th lens on optical axis on optical axis exists In reasonable range, it not only can effectively weaken ghost image risk brought by the 4th lens and the 5th lens, but also can reduce and take the photograph As camera lens packet size, so that lens group is easier to maintain ultra-slim features.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 0.30 < R8/R9 < 2.00, In, R8 is the radius of curvature of the image side surface of the 4th lens, and R9 is the radius of curvature of the object side of the 5th lens.More specifically, R8 0.48≤R8/R9≤1.82 can further be met between R9.By the radius of curvature and for adjusting the image side surface of the 4th lens The ratio of the radius of curvature of the object side of five lens can effectively control the spherical aberration contribution amount of the 4th lens and the 5th lens In reasonable range, while but also the two possesses better processability.

In the exemplary embodiment, the pick-up lens group of the application can meet 0.50 < SAG51/SAG52 of conditional < 1.50, wherein SAG51 be the 5th lens object side and optical axis intersection point to the object side of the 5th lens effective radius vertex Between axis on distance；SAG52 be the 5th lens image side surface and optical axis intersection point to the 5th lens image side surface effectively half Distance on axis between diameter vertex.More specifically, can further meet between SAG51 and SAG52 0.94≤SAG51/SAG52≤ 1.23.By reasonably distributing the ratio of the 5th lens SAG51 and SAG52, avoids the 5th lens from being excessively bent, can reduce and add Work difficulty, and reduce the spherical aberration of pick-up lens group.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional ∑ AT/TD < 0.35, wherein TD For distance on the object side to the axis of the image side surface of the 7th lens of the first lens；∑ AT is that the first lens are any into the 7th lens The summation of airspace between the two neighboring lens with focal power on optical axis.More specifically, between TD and ∑ AT into One step can meet ∑ AT/TD≤0.31.Distance on object side to the axis of the image side surface of the 7th lens by controlling the first lens It is total with airspace of first lens into the 7th lens between arbitrary neighborhood two lens with focal power on optical axis The ratio of sum can reasonably control the interval between each surface of lens, avoid deflection of light excessive, while reducing pick-up lens The difficulty of processing of group.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 1.00 < f6/fy < 2.50, In, f6 is the effective focal length of the 6th lens, and fy is the effective focal length of the Y direction of pick-up lens group.More specifically, f6 and fy it Between can further meet 1.26≤f6/fy≤2.34.By reasonably controlling the total of the focal lengths of the 6th lens and pick-up lens group The ratio of effective focal length can make pick-up lens group while guaranteeing that pick-up lens group possesses higher aberration correction ability Size stills remain in lesser level.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 1.50 < f6/R13 < 4.50, In, f6 is the effective focal length of the 6th lens, and R13 is the radius of curvature of the object side of the 7th lens.More specifically, f6 and R13 it Between can further meet 1.92≤f6/R13≤4.38.By the effective focal length and the 7th lens that reasonably control the 6th lens The radius of curvature of object side, so that the astigmatism of the 7th lens, coma contribution amount are controlled in reasonable range, and can be effective Ground balances the astigmatism and coma that front lens are left, so that lens group has better image quality.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 9.00 < CT1/T12 < 12.00, Wherein, CT1 is center thickness of first lens on optical axis, and T12 is between the air of the first lens and the second lens on optical axis Every.More specifically, can further meet 9.65≤CT1/T12≤11.93 between CT1 and T12.By reasonably controlling first thoroughly Center thickness and first lens and second lens airspace on optical axis of the mirror on optical axis, can be effectively reduced and take the photograph As the risk of ghost image occurs in lens group, and facilitate the size compression of pick-up lens group.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 0.50 < CT4/CT5 < 2.00, In, CT4 is center thickness of the 4th lens on optical axis, and CT5 is center thickness of the 5th lens on optical axis.More specifically, 0.77≤CT4/CT5≤1.91 can further be met between CT4 and CT5.Pass through the center thickness by the 4th lens on optical axis It is controlled in reasonable range with center thickness of the 5th lens on optical axis, allows pick-up lens group that color is better balanced Difference, while avoided again so that the 5th lens are excessively thin and cause processing technology difficult.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional TTL/ImgH < 1.60, wherein TTL is distance on the object side to the axis of the imaging surface of pick-up lens group of the first lens, and ImgH is the imaging surface of pick-up lens group On effective pixel area diagonal line length half.More specifically, can further meet between TTL and ImgH TTL/ImgH≤ 1.59.By the way that the Ratio control of TTL and ImgH in the reasonable scope, can be effectively reduced the overall size of pick-up lens group, Ultra-slim features and the miniaturization of pick-up lens group are realized, so that pick-up lens group can preferably be suitable for more coming in the market Ultrathin electronic product the more.

In the exemplary embodiment, the pick-up lens group of the application can meet 4.00 < CT5*100/TTL of conditional < 10.00, wherein CT5 is center thickness of the 5th lens on optical axis；TTL be the first lens object side to imaging surface axis Upper distance.More specifically, can further meet 4.39≤CT5*100/TTL≤9.53 between CT5 and TTL.By reasonably controlling Center thickness of the 5th lens on optical axis is made, the miniaturization of pick-up lens group is conducive to, reduces its bring ghost image risk.This Outside, it by the way that the color difference of pick-up lens group can be effectively reduced with the cooperation of the first lens to the 4th lens, while avoiding due to the The difficulty of the excessively thin bring technique processing aspect of five lens.

In the exemplary embodiment, above-mentioned pick-up lens group may also include diaphragm, to promote the image quality of camera lens.It can Selection of land, diaphragm may be provided between object side and the first lens.

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 protection glass of the photosensitive element on imaging surface.

Multi-disc eyeglass, such as described above seven 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 camera lens, the machinability for reducing the susceptibility of camera lens and improving camera lens, so that pick-up lens group It is more advantageous to and produces and processes and be applicable to portable electronic product.In addition, non-rotationally-symmetric aspherical logical introducing increases Non-rotationally-symmetric component is added, so that the number of design freedom is increased, to meridian aberration and sagitta of arc aberration and axis Outer aberration is corrected, and is promoted to obtain further image quality.

In presently filed embodiment, the mirror surface of each lens substantially uses aspherical mirror.The spy of non-spherical lens Point is: from lens centre to lens perimeter, continual curvature variation.With the ball from lens centre to lens perimeter with constant curvature Face lens are different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve astigmatic image error Advantage.After non-spherical lens, the aberration occurred when imaging can be eliminated, as much as possible so as to improve at image quality Amount.Optionally, in the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens At least one of the object side of each lens and image side surface can be aspherical.Optionally, the first lens, the second lens, third Lens, the 4th lens, the 5th lens, the object side of the 6th lens and each lens in the 7th lens and image side surface can be non- Spherical surface.

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 of composition pick-up lens group can be changed to obtain each result and advantage described in this specification.Though for example, It is so described by taking seven lens as an example in embodiments, but the pick-up lens group is not limited to include seven lens.Such as Fruit needs, which may also include the lens of other quantity, for example, five lens, six lens etc..

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

Embodiment 1

According to an embodiment of the present application 1 pick-up lens group is described referring to Fig. 1 and Fig. 2.Fig. 1 is shown according to this Shen The structural schematic diagram of the pick-up lens group of embodiment 1 please.

As shown in Figure 1, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 and image side surface S4 are concave surface.The third lens E3 has positive light coke, and object side S5 is recessed Face, image side surface S6 are convex surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.5th Lens E5 has negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke, Object side S11 and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, image side surface S14 is concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 to S16 And it is ultimately imaged on imaging surface S17.

Table 1 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the pick-up lens group of embodiment 1 Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Face number	Surface type	Radius of curvature Y	Radius of curvature X	Thickness	Material	Circular cone coefficient Y	Circular cone coefficient X
								OBJ	Spherical surface	It is infinite		It is infinite
STO	Spherical surface	It is infinite		-0.3248
								S1	It is aspherical	1.4586		0.6390	1.55/56.1	-0.4850
S2	It is aspherical	53.3407		0.0545		99.0000
								S3	It is aspherical	-20.3686		0.2000	1.65/23.5	99.0000
S4	It is aspherical	5.6886		0.4407		26.7429
								S5	It is aspherical	-5.2200		0.2213	1.65/23.5	28.1032
S6	It is aspherical	-4.5520		0.0300		-30.9517
								S7	It is aspherical	-5.0877		0.3216	1.54/55.9	-4.0881
S8	It is aspherical	-5.0654		0.2398		-47.2571
								S9(AAS)	It is aspherical	-4.2295	-4.2262	0.2499	1.65/23.5	-19.0635	-19.0578
S10	It is aspherical	-10.0856		0.1262		31.7373
								S11	It is aspherical	14.1861		0.4468	1.54/55.9	48.8495
S12	It is aspherical	-4.8095		0.1759		-38.2600
								S13	It is aspherical	1.6633		0.5692	1.54/55.9	-1.1451
S14	It is aspherical	0.9916		0.3877		-3.3941
								S15	Spherical surface	It is infinite		0.2100	1.52/64.2
S16	Spherical surface	It is infinite		0.3374
								S17	Spherical surface	It is infinite		0.0000

Table 1

It should be understood that in upper table without especially indicate (blank space) " radius of curvature X " and " circular cone coefficient X " with it is right " radius of curvature Y " and " circular cone coefficient Y " numerical value answered is consistent.It is similar in following embodiment.

As shown in Table 1, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 6th lens E6 and The image side surface of the object side of any one lens and image side surface and the 5th lens E5 is aspherical in seven lens E7.In this reality It applies in example, 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 rank.The following table 2, which gives, can be used for each aspherical mirror in embodiment 1 High-order coefficient A4, A6, A8, A10, A12, A14, A16, A18 and A20 of S1-S8 and S10-S14.

Face number	A14	A16	A18	A20
					S1	-7.2806E-06	-5.4966E-07	4.0039E-06	1.7045E-06
S2	-8.3391E-05	3.4944E-05	3.8352E-05	1.8814E-05
					S3	3.1529E-04	3.4282E-04	1.4757E-04	2.8912E-05
S4	-2.0791E-05	-1.6674E-05	-8.0250E-06	-1.1182E-06
					S5	-1.7302E-05	-1.9529E-05	3.3628E-06	-1.4675E-06
S6	-2.4855E-04	4.5066E-05	1.4385E-05	5.7815E-06
					S7	6.1708E-04	9.2080E-04	1.7663E-04	8.6317E-05
S8	-6.5046E-04	8.6617E-05	-1.3263E-05	5.9727E-05
					S10	3.2454E-05	3.9205E-04	1.9146E-05	9.0739E-05
S11	-2.1037E-03	2.5210E-04	-5.5389E-04	1.5427E-04
					S12	-1.5906E-04	-3.4648E-04	-7.9543E-05	1.6188E-05
S13	-1.8747E-03	1.1128E-03	-2.0820E-04	-1.3677E-05
					S14	3.5943E-03	-4.8602E-04	1.1633E-04	-1.2876E-04

Table 2

It is non-by table 1 it can also be seen that the object side S9 of the 5th lens E5 is non-rotationally-symmetric aspherical (that is, the face AAS) The aspherical face type of rotational symmetry is available but is not limited to following non-rotationally-symmetric aspherical formula and is defined:

Wherein, z is the rise for being parallel to the face in z-axis direction；CUX, CUY are respectively the curvature of X, Y-direction vertex of surface；KX, KY is respectively X, Y-direction circular cone coefficient；AR, BR, CR, DR, ER, FR, GR, HR, JR are respectively in aspherical rotational symmetry component 4 ranks, 6 ranks, 8 ranks, 10 ranks, 12 ranks, 14 ranks, 16 ranks, 18 ranks, 20 level numbers；AP, BP, CP, DP, EP, FP, GP, HP, JP points It Wei not 4 ranks, 6 ranks, 8 ranks, 10 ranks, 12 ranks, 14 ranks, 16 ranks, 18 ranks, 20 level numbers in aspherical non-rotational symmetry component.

The following table 3 give the AR, BR that can be used for the non-rotationally-symmetric aspherical S9 in embodiment 1, CR, DR, ER, FR, GR, HR, JR coefficient.

The face AAS	AR	BR	CR	DR	ER	FR	GR	HR	JR
										S9	-0.1009	-0.3429	1.6533	-3.5998	4.3663	-3.0482	1.1375	-0.1607	-0.0093

Table 3

Table 4 give the AP, BP that can be used for the non-rotationally-symmetric aspherical S9 in embodiment 1, CP, DP, EP, FP, GP, HP, JP coefficient.

Table 4

Table 5 give the effective focal length f1 to f7 of each lens in embodiment 1, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.74	f7(mm)	-6.50
				f2(mm)	-6.88	fx(mm)	3.73
f3(mm)	48.84	fy(mm)	3.72
				f4(mm)	356.68	TTL(mm)	4.65
f5(mm)	-11.49	ImgH(mm)	2.9335
				f6(mm)	6.75	Semi-FOV(°)	37.71

Table 5

Pick-up lens group in embodiment 1 meets:

Fx/fy=1.00, wherein fx is the effective focal length of the X-direction of pick-up lens group, and fy is the Y of pick-up lens group The effective focal length of axis direction.

R13/R14=1.68, wherein R13 is the radius of curvature of the object side of the 7th lens, and R14 is the picture of the 7th lens The radius of curvature of side.

T45/T56=1.90, wherein T45 is the airspace of the 4th lens and the 5th lens on optical axis, T56 the The airspace of five lens and the 6th lens on optical axis.

R8/R9=1.20, wherein R8 is the radius of curvature of the image side surface of the 4th lens, and R9 is the object side of the 5th lens Radius of curvature.

SAG51/SAG52=0.96, wherein SAG51 be the 5th lens object side and optical axis intersection point to the 5th lens Object side effective radius vertex between axis on distance；SAG52 be the 5th lens image side surface and optical axis intersection point to the Distance on axis between the effective radius vertex of the image side surface of five lens.

∑ AT/TD=0.29, wherein TD is distance on the object side to the axis of the image side surface of the 7th lens of the first lens； ∑ AT is airspace of first lens into the 7th lens between arbitrary neighborhood two lens with focal power on optical axis Summation.

F6/fy=1.81, wherein f6 is the effective focal length of the 6th lens, and fy is the effective of the Y direction of pick-up lens group Focal length.

F6/R13=4.06, wherein f6 is the effective focal length of the 6th lens, and R13 is the curvature of the object side of the 7th lens Radius.

CT1/T12=11.73, wherein CT1 is center thickness of first lens on optical axis, and T12 is the first lens and the Airspace of two lens on optical axis.

CT4/CT5=1.29, wherein CT4 is center thickness of the 4th lens on optical axis, and CT5 is the 5th lens in light Center thickness on axis.

TTL/ImgH=1.59, wherein TTL be the first lens object side to the axis of the imaging surface of pick-up lens group on away from From ImgH is the half of the effective pixel area diagonal line length on the imaging surface of pick-up lens group.

CT5*100/TTL=5.37, wherein CT5 is center thickness of the 5th lens on optical axis；TTL is the first lens Object side to the axis of imaging surface on distance.

At Fig. 2 shows the RMS spot diameters of the pick-up lens group of embodiment 1 in first quartile different image heights position Size cases.As can be seen from FIG. 2, pick-up lens group given by embodiment 1 can be realized good image quality.

Embodiment 2

Referring to Fig. 3 and Fig. 4 description according to the pick-up lens group of the embodiment of the present application 2.The present embodiment and it is following its In his embodiment, for brevity, by clipped description similar to Example 1.Fig. 3 is shown according to the embodiment of the present application The structural schematic diagram of 2 pick-up lens group.

As shown in figure 3, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is Concave surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke, Its object side S11 and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, image side Face S14 is concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 extremely S16 is simultaneously ultimately imaged on imaging surface S17.

Table 6 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the pick-up lens group of embodiment 2 Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Table 6

As shown in Table 6, in example 2, the first lens E1, the second lens E2, the third lens E3, the 5th lens E5, The object side S7 of the object side of any one lens and image side surface and the 4th lens E4 is equal in six lens E6 and the 7th lens E7 It is aspherical；The image side surface S8 of 4th lens E4 is non-rotationally-symmetric aspherical.

Table 7 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	1.2135E-02	-2.4010E-03	-1.2548E-03	-2.0872E-04	-7.5427E-05
S2	-3.9639E-02	-2.3800E-03	-7.2336E-04	-6.1186E-07	-9.9178E-05
						S3	8.6517E-02	2.5937E-02	4.4834E-03	8.9154E-04	3.1378E-05
S4	3.7912E-02	7.5550E-03	1.6938E-03	3.3476E-04	-4.4762E-06
						S5	-6.1457E-02	3.5264E-03	1.7254E-03	1.3775E-04	-9.0036E-05
S6	-5.0942E-02	8.8277E-03	2.8442E-03	1.7416E-04	-4.2504E-04
						S7	-2.3274E-04	-1.7116E-03	-1.5937E-04	-3.2166E-04	-1.8041E-04
S9	-2.2582E-01	-9.8962E-03	-1.7631E-03	-2.4775E-03	2.7891E-05
						S10	-2.9346E-01	2.2579E-02	2.4593E-03	3.8363E-05	-1.0615E-03
S11	-2.5781E-01	-1.5595E-01	1.0271E-01	-2.2423E-02	-2.2503E-03
						S12	-4.1716E-02	-3.4425E-01	1.2008E-01	-3.9182E-02	1.1247E-02
S13	-2.3369E+00	6.8737E-01	-2.2200E-01	5.3492E-02	-1.6327E-02
						S14	-2.1388E+00	4.1445E-01	-1.1834E-01	-1.1466E-02	-2.2491E-03

Face number	A14	A16	A18	A20
					S1	1.4128E-05	-1.0574E-05	7.4192E-06	-1.4910E-06
S2	-5.1121E-05	-1.9165E-06	-6.6907E-06	1.5705E-05
					S3	3.0302E-04	2.1465E-04	9.6124E-05	1.7246E-05
S4	-5.7459E-05	-1.9699E-05	-2.8215E-05	2.2660E-06
					S5	-2.7760E-05	-4.3754E-06	-1.6994E-05	1.8852E-06
S6	3.3240E-05	3.4277E-05	-4.2559E-05	1.9392E-05
					S7	2.9059E-04	1.7783E-04	-9.4649E-06	5.5996E-05
S9	-3.0631E-04	-6.9026E-04	1.5460E-04	2.7678E-05
					S10	-3.8749E-04	-2.0715E-05	8.6407E-04	-5.9234E-06
S11	6.1632E-04	2.7525E-03	-9.2247E-04	1.5982E-04
					S12	4.9389E-04	5.3295E-04	-1.3813E-04	2.4167E-03
S13	5.3787E-05	-5.9096E-04	3.2826E-03	4.7603E-04
					S14	1.9659E-02	-7.1236E-03	7.9830E-04	3.0194E-04

Table 7

Table 8 shows the high level that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S8 in embodiment 2 Number.

Table 8

Table 9 shows the high-order that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S8 in embodiment 2 Coefficient.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 9

Table 10 give the effective focal length f1 to f7 of each lens in embodiment 2, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.82	f7(mm)	-7.09
				f2(mm)	-7.93	fx(mm)	3.82
f3(mm)	1836.46	fy(mm)	3.80
				f4(mm)	-84.77	TTL(mm)	4.60
f5(mm)	-17.30	ImgH(mm)	2.93
				f6(mm)	7.48	Semi-FOV(°)	37.00

Table 10

Fig. 4 shows the RMS spot diameter of the pick-up lens group of embodiment 2 in first quartile at different image heights position Size cases.According to Fig. 4 as can be seen that pick-up lens group given by embodiment 2 can be realized 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 and Fig. 6.Fig. 5 is shown according to this Shen Please embodiment 3 pick-up lens group structural schematic diagram.

As shown in figure 5, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

First lens E1 has positive light coke, and object side S1 and image side surface S2 are convex surface.Second lens E2 has negative Focal power, object side S3 and image side surface S4 are concave surface.The third lens E3 has positive light coke, and object side S5 is concave surface, Image side surface S6 is convex surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.5th thoroughly Mirror E5 has negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke, object Side S11 and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, image side surface S14 For concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 to S16 and most It is imaged on imaging surface S17 eventually.

Table 11 show the surface types of each lens of the pick-up lens group of embodiment 3, radius of curvature X, radius of curvature Y, Thickness, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Face number	Surface type	Radius of curvature Y	Radius of curvature X	Thickness	Material	Circular cone coefficient Y	Circular cone coefficient X
								OBJ	Spherical surface	It is infinite	It is infinite
STO	Spherical surface	It is infinite		-0.3258
								S1	It is aspherical	1.4543	0.6644	1.55/56.1	-0.4648
S2	It is aspherical	-1440.0266		0.0557		-99.0000
								S3	It is aspherical	-15.0470	0.2002	1.65/23.5	98.8861
S4	It is aspherical	5.6351		0.4310		26.1517
								S5	It is aspherical	-5.1896	0.2247	1.65/23.5	27.9526
S6	It is aspherical	-4.0380		0.0301		-26.2203
								S7	It is aspherical	-4.7622	0.4106	1.54/55.9	-5.4484
S8	It is aspherical	-4.0912		0.2875		-43.3339
								S9	It is aspherical	-3.8557	0.2800	1.65/23.5	-10.3316
S10	It is aspherical	-10.0879		0.1462		30.5202
								S11	It is aspherical	13.6419	0.4591	1.54/55.9	44.0914
S12(AAS)	It is aspherical	-3.4889	-3.8612	0.2269		-119.1477	-100.4294
								S13	It is aspherical	1.9217	0.4550	1.54/55.9	-1.0681
S14	It is aspherical	0.9048		0.3511		-4.2013
								S15	Spherical surface	It is infinite	0.2100	1.52/64.2
S16	Spherical surface	It is infinite		0.2175
								S17	Spherical surface	It is infinite	0.0000

Table 11

As shown in Table 11, in embodiment 3, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, The object side S11 of the object side of any one lens and image side surface and the 6th lens E6 is equal in five lens E5 and the 7th lens E7 It is aspherical；The image side surface S12 of 6th lens E6 is non-rotationally-symmetric aspherical.

Table 12 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	1.5112E-02	-2.2177E-03	-1.0939E-03	-3.1777E-04	-5.5644E-05
S2	-3.2170E-02	-1.0377E-03	-1.8508E-03	-6.2733E-05	-2.5752E-04
						S3	7.3420E-02	2.5721E-02	3.1108E-03	9.3068E-04	-2.0635E-04
S4	2.8154E-02	8.3464E-03	1.4859E-03	6.5042E-04	3.0975E-05
						S5	-6.2547E-02	2.7735E-03	1.6341E-03	7.6198E-04	-9.6652E-05
S6	-5.2607E-02	8.6291E-03	5.1541E-03	9.5799E-04	-7.8743E-04
						S7	3.7259E-03	6.2450E-03	5.3711E-03	-3.3025E-03	-7.7534E-04
S8	-1.7103E-01	8.4778E-03	-1.2591E-03	-1.8607E-03	-2.6163E-05
						S9	-2.3449E-01	6.8191E-03	-5.1782E-03	-2.1331E-03	-1.1845E-03
S10	-2.9316E-01	3.0306E-02	5.4313E-03	-1.3578E-03	-6.5137E-05
						S11	-1.8710E-01	-1.8832E-01	8.0996E-02	-1.2478E-02	4.3875E-03
S13	-1.9367E+00	5.6483E-01	-1.5821E-01	3.7763E-02	-4.2673E-03
						S14	-1.3394E+00	3.7393E-01	-6.9710E-02	1.6340E-02	-1.0472E-02

Table 12

Table 13 shows the high-order that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S12 in embodiment 3 Coefficient.

Table 13

Table 14 shows the height that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S12 in embodiment 3 Level number.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 14

Table 15 give the effective focal length f1 to f7 of each lens in embodiment 3, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.66	f7(mm)	-3.78
				f2(mm)	-6.34	fx(mm)	3.82
f3(mm)	26.23	fy(mm)	3.72
				f4(mm)	44.57	TTL(mm)	4.65
f5(mm)	-9.86	ImgH(mm)	2.93
				f6(mm)	5.23	Semi-FOV(°)	37.10

Table 15

Fig. 6 shows the RMS spot diameter of the pick-up lens group of embodiment 3 in first quartile at different image heights position Size cases.According to Fig. 6 as can be seen that pick-up lens group given by embodiment 3 can be realized 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 and Fig. 8.Fig. 7 is shown according to this Shen Please embodiment 4 pick-up lens group structural schematic diagram.

As shown in fig. 7, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are convex surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke, Its object side S11 and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, image side Face S14 is concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 extremely S16 is simultaneously ultimately imaged on imaging surface S17.

Table 16 show the surface types of each lens of the pick-up lens group of embodiment 4, radius of curvature X, radius of curvature Y, Thickness, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Face number	Surface type	Radius of curvature Y	Radius of curvature X	Thickness	Material	Circular cone coefficient Y	Circular cone coefficient X
								OBJ	Spherical surface	It is infinite		It is infinite
STO	Spherical surface	It is infinite		-0.3394
								S1	It is aspherical	1.4706		0.6163	1.55/56.1	-0.4261
S2	It is aspherical	41.9884		0.0544		83.5569
								S3	It is aspherical	2071.7903		0.2000	1.65/23.5	99.0000
S4	It is aspherical	4.8438		0.4385		24.1987
								S5	It is aspherical	-5.3902		0.2015	1.65/23.5	26.6657
S6	It is aspherical	-5.9158		0.0300		-27.9792
								S7(AAS)	It is aspherical	-121.2902	-38.6665	0.4049	1.54/55.9	-1.6065E+08	-1.1648E+08
S8	It is aspherical	-14.8812		0.2457		-9.9647
								S9	It is aspherical	-8.1896		0.4364	1.65/23.5	20.4085
S10	It is aspherical	-114.6695		0.0809		99.0000
								S11	It is aspherical	13.0913		0.4828	1.54/55.9	42.9898
S12	It is aspherical	-2.9874		0.3382		-33.6244
								S13	It is aspherical	2.3802		0.4070	1.54/55.9	-0.8942
S14	It is aspherical	0.9381		0.3834		-3.9713
								S15	Spherical surface	It is infinite		0.2100	1.52/64.2
S16	Spherical surface	It is infinite		0.0500
								S17	Spherical surface	It is infinite		0.0000

Table 16

As shown in Table 16, in example 4, the first lens E1, the second lens E2, the third lens E3, the 5th lens E5, The image side surface S8 of the object side of any one lens and image side surface and the 4th lens E4 is equal in six lens E6 and the 7th lens E7 It is aspherical；The object side S7 of 4th lens E4 is non-rotationally-symmetric aspherical.

Table 17 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	1.6765E-02	-1.5753E-03	-1.0528E-03	-3.1457E-04	-6.9239E-05
S2	-2.7826E-02	-1.9528E-03	-2.4788E-03	-1.3631E-04	-3.7570E-04
						S3	5.6603E-02	2.5637E-02	1.8893E-03	3.9684E-04	-6.8439E-04
S4	1.5732E-02	8.1280E-03	1.2018E-03	5.3183E-04	-1.3694E-05
						S5	-5.7171E-02	3.6902E-03	1.9934E-03	4.8419E-04	-1.1928E-04
S6	-5.5714E-02	7.2828E-03	5.6083E-03	-2.6002E-04	-4.1208E-04
						S8	-1.6935E-01	1.0606E-02	2.1220E-03	1.0085E-03	-8.0527E-05
S9	-2.5432E-01	1.7934E-02	-4.8079E-03	7.0613E-04	-1.5671E-03
						S10	-2.9861E-01	3.7150E-02	6.2089E-03	-1.1367E-03	-4.3181E-04
S11	-1.2952E-01	-2.0786E-01	7.9499E-02	-1.2964E-02	5.9983E-03
						S12	2.0385E-01	-2.9118E-01	9.3943E-02	-2.2771E-02	4.8962E-03
S13	-1.8612E+00	5.6283E-01	-1.5971E-01	3.7335E-02	-4.3063E-03
						S14	-1.2549E+00	3.2513E-01	-7.2548E-02	2.7447E-02	-1.1172E-02

Face number	A14	A16	A18	A20
					S1	-1.0785E-05	-2.2581E-06	1.2480E-06	1.0291E-06
S2	-1.1361E-04	-9.8215E-06	1.3896E-05	1.2377E-05
					S3	3.0560E-05	1.3692E-04	7.9816E-05	1.9516E-05
S4	-3.0618E-05	-2.1046E-05	-8.2215E-06	-8.6413E-07
					S5	-1.2402E-04	-2.7077E-05	5.9626E-06	-4.6340E-06
S6	-3.8683E-04	8.5988E-05	5.5244E-05	-9.8201E-06
					S8	7.1776E-05	-9.6011E-05	4.4766E-05	4.7641E-05
S9	7.9676E-05	-2.3449E-04	-1.2952E-04	8.8744E-06
					S10	5.2596E-04	-2.6996E-04	3.1495E-05	2.3216E-06
S11	-2.5404E-03	8.1231E-04	-2.3312E-04	-4.1501E-06
					S12	8.0485E-05	2.8696E-04	1.2524E-05	-1.0956E-04
S13	-1.8991E-03	9.7671E-04	-1.0962E-04	-8.9299E-06
					S14	4.1659E-03	-1.8995E-03	-1.4249E-05	9.3469E-05

Table 17

Table 18 shows the high level that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S7 in embodiment 4 Several and table 19 shows the high-order that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S7 in embodiment 4 Coefficient.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 18

Table 19

Table 20 give the effective focal length f1 to f7 of each lens in embodiment 4, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.78	f7(mm)	-3.20
				f2(mm)	-7.53	fx(mm)	3.75
f3(mm)	-110.78	fy(mm)	3.63
				f4(mm)	31.56	TTL(mm)	4.58
f5(mm)	-13.70	ImgH(mm)	2.93
				f6(mm)	4.58	Semi-FOV(°)	37.91

Table 20

Fig. 8 shows the RMS spot diameter of the pick-up lens group of embodiment 4 in first quartile at different image heights position Size cases.According to Fig. 8 as can be seen that pick-up lens group given by embodiment 4 can be realized 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 and Figure 10.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, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has Negative power, object side S3 and image side surface S4 are concave surface.The third lens E3 has positive light coke, and object side S5 is recessed Face, image side surface S6 are convex surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.5th Lens E5 has negative power, and object side S9 and image side surface S10 are concave surface.6th lens E6 has positive light coke, object Side S11 and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, image side surface S14 For concave surface.Optical filter E8 has object side S15 and image side surface S16.Light from object sequentially passes through each surface S1 to S16 and most It is imaged on imaging surface S17 eventually.

Table 21 show the surface types of each lens of the pick-up lens group of embodiment 5, radius of curvature X, radius of curvature Y, Thickness, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Table 21

As shown in Table 21, in embodiment 5, the first lens E1, the second lens E2, the 4th lens E4, the 5th lens E5, The object side S5 of the object side of any one lens and image side surface and the third lens E3 is equal in six lens E6 and the 7th lens E7 It is aspherical；The image side surface S6 of the third lens E3 is non-rotationally-symmetric aspherical.

Table 22 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	1.7088E-02	-2.7888E-03	-1.6197E-03	-4.7113E-04	-1.0647E-04
S2	-3.7174E-02	-3.1797E-03	-2.3356E-03	-2.9547E-04	-3.2643E-04
						S3	7.5112E-02	2.5892E-02	3.2373E-03	3.8102E-04	-6.4572E-04
S4	3.0760E-02	8.4359E-03	1.8116E-03	7.1739E-04	8.4187E-05
						S5	-6.5253E-02	3.3836E-03	2.3381E-03	5.4467E-04	-1.5462E-04
S7	8.0043E-03	5.1914E-03	5.1375E-03	-3.2302E-03	-2.1168E-04
						S8	-1.6898E-01	1.1658E-02	9.4524E-04	-1.3864E-03	-8.2183E-04
S9	-2.5193E-01	4.2773E-03	-7.4926E-03	-2.0775E-03	-8.3021E-04
						S10	-3.4067E-01	2.9445E-02	5.8939E-03	-1.7746E-03	2.3182E-03
S11	-1.7035E-01	-2.5269E-01	1.1165E-01	-1.8404E-02	9.6545E-03
						S12	3.6536E-02	-3.7492E-01	1.0145E-01	-2.4483E-02	1.2777E-02
S13	-2.2336E+00	6.7173E-01	-1.9815E-01	4.5808E-02	-5.7941E-03
						S14	-1.8368E+00	3.6208E-01	-1.1628E-01	-2.3544E-02	-2.6279E-02

Face number	A14	A16	A18	A20
					S1	-7.2653E-06	7.0600E-07	3.5017E-06	-1.6660E-06
S2	-5.9952E-06	9.7191E-05	6.3067E-05	2.1065E-05
					S3	-2.0636E-05	9.3237E-05	3.8758E-05	1.9162E-06
S4	9.2931E-06	-4.0708E-06	-3.9859E-06	-2.5968E-06
					S5	-9.1132E-05	-1.1003E-05	-1.0498E-05	-3.4885E-06
S7	9.6588E-04	2.5492E-04	-7.8402E-05	7.6906E-05
					S8	5.4904E-05	1.0512E-04	4.3954E-05	9.0163E-06
S9	-3.1306E-04	-3.0876E-04	-2.9450E-05	2.4833E-05
					S10	-8.3632E-04	-1.6444E-04	1.0641E-04	3.5960E-05
S11	-7.3276E-03	4.4767E-04	-2.8239E-05	7.4912E-04
					S12	1.9138E-03	-1.4186E-04	9.6519E-04	-3.0991E-04
S13	9.4103E-04	-1.2662E-03	1.1079E-04	3.1268E-04
					S14	2.6718E-02	7.1974E-03	-1.3222E-03	-1.4787E-03

Table 22

Table 23 shows the high level that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S6 in embodiment 5 Number.

Table 23

Table 24 shows the high level that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S6 in embodiment 5 Number.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 24

Table 25 give the effective focal length f1 to f7 of each lens in embodiment 5, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.80	f7(mm)	-4.83
				f2(mm)	-6.58	fx(mm)	3.67
f3(mm)	24.91	fy(mm)	3.63
				f4(mm)	35.19	TTL(mm)	4.62
f5(mm)	-13.35	ImgH(mm)	2.93
				f6(mm)	7.50	Semi-FOV(°)	37.76

Table 25

Figure 10 shows the RMS spot diameter of the pick-up lens group of embodiment 5 in first quartile at different image heights position Size cases.According to Figure 10 as can be seen that pick-up lens group given by embodiment 5 can be realized 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 and Figure 12.Figure 11 shows basis The structural schematic diagram of the pick-up lens group of the embodiment of the present application 6.

As shown in figure 11, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

Table 26 show the surface types of each lens of the pick-up lens group of embodiment 6, radius of curvature X, radius of curvature Y, Thickness, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Face number	Surface type	Radius of curvature Y	Radius of curvature X	Thickness	Material	Circular cone coefficient Y	Circular cone coefficient X
								OBJ	Spherical surface	It is infinite	It is infinite
STO	Spherical surface	It is infinite		-0.3707
								S1	It is aspherical	1.4849	0.6903	1.55/56.1	-0.4528
S2	It is aspherical	36.3955		0.0708		77.0275
								S3	It is aspherical	-19.2800	0.2040	1.65/23.5	99.0000
S4	It is aspherical	5.4785		0.3796		23.5172
								S5	It is aspherical	-5.3250	0.2355	1.65/23.5	27.2830
S6	It is aspherical	-3.6485		0.0386		-18.9353
								S7	It is aspherical	-6.7777	0.3618	1.54/55.9	-9.2408E+00
S8	It is aspherical	-4.3176		0.3117		-65.3234
								S9	It is aspherical	-4.2881	0.2000	1.65/23.5	-25.8571
S10	It is aspherical	-24.2481		0.1905		99.0000
								S11	It is aspherical	19.4331	0.3932	1.54/55.9	97.9461
S12	It is aspherical	-5.2278		0.1777		-99.0000
								S13	It is aspherical	1.8292	0.5683	1.54/55.9	-1.1480
S14(AAS)	It is aspherical	0.9407	1.0817	0.3603		-4.5187	-3.6898
								S15	Spherical surface	It is infinite	0.2100	1.52/64.2
S16	Spherical surface	It is infinite		0.1477
								S17	Spherical surface	It is infinite	0.0000

Table 26

As shown in Table 26, in embodiment 6, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, The object side S13 of the object side of any one lens and image side surface and the 7th lens E7 is equal in five lens E5 and the 6th lens E6 It is aspherical；The image side surface S14 of 7th lens E7 is non-rotationally-symmetric aspherical.

Table 27 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A14	A16	A18	A20
					S1	-2.6434E-05	6.3040E-06	-7.1921E-09	6.3021E-06
S2	-5.6752E-05	5.2409E-05	4.7742E-05	1.3276E-05
					S3	2.1680E-05	1.2189E-04	4.3355E-05	2.3053E-06
S4	1.2077E-05	-1.4336E-05	-8.4261E-07	-3.9402E-06
					S5	-1.3448E-04	-2.5771E-05	7.3106E-07	-9.2412E-06
S6	-1.7067E-04	1.8602E-04	6.0339E-05	-4.4953E-06
					S7	8.8975E-04	4.8546E-04	-1.4161E-04	-6.0322E-05
S8	2.9022E-04	4.7388E-04	2.2678E-04	6.8798E-05
					S9	-1.1605E-04	-1.4098E-04	-1.1132E-04	1.6058E-05
S10	-4.1966E-04	-3.1346E-05	-1.5696E-04	-5.2571E-06
					S11	-5.0009E-03	1.0424E-03	-5.5459E-04	1.4137E-04
S12	8.1536E-04	1.7964E-03	-2.9354E-04	-3.3126E-04
					S13	-3.6839E-03	8.0720E-04	-7.7469E-05	5.8983E-05

Table 27

Table 28 shows the high-order that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S14 in embodiment 6 Coefficient.

Table 28

Table 29 shows the height that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S14 in embodiment 6 Level number.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 29

Table 30 give the effective focal length f1 to f7 of each lens in embodiment 6, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.82	f7(mm)	-4.65
				f2(mm)	-6.60	fx(mm)	3.51
f3(mm)	17.04	fy(mm)	3.69
				f4(mm)	21.08	TTL(mm)	4.54
f5(mm)	-8.11	ImgH(mm)	2.93
				f6(mm)	7.72	Semi-FOV(°)	37.73

Table 30

Figure 12 shows the RMS spot diameter of the pick-up lens group of embodiment 6 in first quartile at different image heights position Size cases.According to Figure 12 as can be seen that pick-up lens group given by embodiment 6 can be realized 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 and Figure 14.Figure 13 shows basis The structural schematic diagram of the pick-up lens group of the embodiment of the present application 7.

As shown in figure 13, according to the pick-up lens group of the illustrative embodiments of the application along optical axis by object side to image side according to Sequence include: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th thoroughly Mirror E6, the 7th lens E7, optical filter E8 and imaging surface S17.

Table 31 show the surface types of each lens of the pick-up lens group of embodiment 7, radius of curvature X, radius of curvature Y, Thickness, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter (mm)。

Face number	Surface type	Radius of curvature Y	Radius of curvature X	Thickness	Material	Circular cone coefficient Y	Circular cone coefficient X
								OBJ	Spherical surface	It is infinite	It is infinite
STO	Spherical surface	It is infinite		-0.3626
								S1	It is aspherical	1.4503	0.6575	1.55/56.1	-0.4302
S2	It is aspherical	21.1200		0.0608		-24.1049
								S3	It is aspherical	-33.7708	0.2000	1.65/23.5	99.0000
S4	It is aspherical	5.0738		0.3763		23.5543
								S5	It is aspherical	-5.2862	0.2313	1.65/23.5	27.1295
S6(AAS)	It is aspherical	-3.8293	-3.8757	0.0300		-26.6726	-22.4258
								S7	It is aspherical	-9.9534	0.3629	1.54/55.9	-1.5472E+01
S8	It is aspherical	-7.1234		0.2671		-86.6605
								S9	It is aspherical	-6.2547	0.2000	1.65/23.5	-19.9416
S10	It is aspherical	-43.6938		0.1585		99.0000
								S11	It is aspherical	19.7378	0.3776	1.54/55.9	98.0626
S12	It is aspherical	-5.6442		0.2003		-99.0000
								S13	It is aspherical	1.8770	0.6169	1.54/55.9	-1.0948
S14	It is aspherical	1.0766		0.4070		-3.8214
								S15	Spherical surface	It is infinite	0.2100	1.52/64.2
S16	Spherical surface	It is infinite		0.1437
								S17	Spherical surface	It is infinite	0.0000

Table 31

As shown in Table 31, in embodiment 7, the first lens E1, the second lens E2, the 4th lens E4, the 5th lens E5, The object side S5 of the object side of any one lens and image side surface and the third lens E3 is equal in six lens E6 and the 7th lens E7 It is aspherical；The image side surface S6 of the third lens E3 is non-rotationally-symmetric aspherical.

Table 32 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, wherein each aspherical face type can It is limited by the formula (1) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	1.8556E-02	-3.1759E-03	-2.0618E-03	-6.4570E-04	-1.6266E-04
S2	-4.1160E-02	-5.2840E-03	-2.7378E-03	-3.9719E-04	-3.3937E-04
						S3	7.4927E-02	2.6374E-02	4.1281E-03	5.6067E-04	-5.7321E-04
S4	3.0373E-02	8.3009E-03	2.3591E-03	8.8632E-04	1.2946E-04
						S5	-6.4009E-02	3.7427E-03	3.1161E-03	7.8774E-04	-1.9076E-04
S7	8.1953E-03	1.6125E-03	4.5075E-03	-2.5151E-03	-1.2485E-04
						S8	-1.5821E-01	1.3217E-02	3.5486E-03	-1.4006E-03	-8.0442E-05
S9	-2.4095E-01	-1.7314E-05	-6.2951E-03	-2.0532E-03	-6.3503E-04
						S10	-2.9791E-01	2.7320E-02	1.5912E-03	-2.9305E-04	2.0110E-03
S11	-1.7433E-01	-2.4636E-01	1.1690E-01	-1.2797E-02	6.5114E-03
						S12	4.2944E-02	-3.5157E-01	1.2077E-01	-2.4056E-02	1.3824E-02
S13	-2.3522E+00	6.9616E-01	-1.9455E-01	5.5949E-02	-9.0308E-03
						S14	-8.0517E-02	2.4395E-02	-5.5243E-03	8.1969E-04	-7.0502E-05

Face number	A14	A16	A18	A20
					S1	-1.4430E-05	1.3733E-06	8.8310E-06	9.5392E-07
S2	-7.3401E-06	9.3726E-05	6.1343E-05	1.9749E-05
					S3	-3.4981E-06	6.6475E-05	1.2704E-05	-1.1898E-05
S4	9.8488E-06	-5.3907E-06	-6.2709E-06	2.0620E-07
					S5	-1.2642E-04	-2.4904E-05	-7.3885E-06	-7.0833E-06
S7	8.8931E-04	2.6524E-04	-1.8191E-04	2.4701E-05
					S8	4.6739E-04	6.0131E-04	1.9798E-04	4.9290E-05
S9	-3.1626E-04	-2.7934E-04	-1.4513E-04	1.1140E-05
					S10	-7.5919E-04	-3.2244E-04	-7.9651E-05	2.2076E-05
S11	-6.3699E-03	7.0814E-04	-4.6851E-04	2.4075E-04
					S12	1.0632E-03	1.6722E-03	1.3662E-04	-3.7094E-04
S13	-5.9458E-03	3.3095E-03	-2.9855E-04	-8.6891E-05
					S14	3.1873E-06	-5.8977E-08	-2.1077E-10	-3.4593E-11

Table 32

Table 33 shows the high level that can be used for the rotational symmetry component of the non-rotationally-symmetric aspherical S6 in embodiment 7 Number.

Table 33

Table 34 shows the high-order that can be used for the non-rotational symmetry component of the non-rotationally-symmetric aspherical S6 in embodiment 7 Coefficient.Wherein, non-rotationally-symmetric aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.

Table 34

Table 35 give the effective focal length f1 to f7 of each lens in embodiment 7, pick-up lens group X-direction effective coke Away from fx, the effective focal length fy of the Y direction of pick-up lens group, pick-up lens group optics total length TTL (that is, from the first lens Distance of the object side S1 of E1 to imaging surface S17 on optical axis), effective pixel area diagonal line length on imaging surface S17 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	2.82	f7(mm)	-6.44
				f2(mm)	-6.83	fx(mm)	3.53
f3(mm)	20.29	fy(mm)	3.51
				f4(mm)	44.67	TTL(mm)	4.50
f5(mm)	-11.35	ImgH(mm)	2.93
				f6(mm)	8.22	Semi-FOV(°)	38.82

Table 35

Figure 14 shows the RMS spot diameter of the pick-up lens group of embodiment 7 in first quartile at different image heights position Size cases.According to Figure 14 as can be seen that pick-up lens group given by embodiment 7 can be realized good image quality.

To sum up, meet table respectively between each lens in pick-up lens group that embodiment 1 is illustrated into embodiment 7 Relationship shown in 36.

Table 36

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, be also possible to 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 exemplary illustration to institute's application technology principle.This field It will be appreciated by the skilled person that invention scope involved in the application, however it is not limited to which the specific combination of above-mentioned technical characteristic forms Technical solution, while should also cover in the case where not departing from the inventive concept, by above-mentioned technical characteristic or its equivalent spy Levy the other technical solutions for carrying out any combination and being formed.Such as features described above has with (but being not limited to) disclosed herein The technical characteristic of similar functions is replaced mutually and the technical solution that is formed.

Claims

It by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th along optical axis 1. pick-up lens group Lens, the 5th lens, the 6th lens and the 7th lens, which is characterized in that

First lens have positive light coke, and object side is convex surface；

Second lens have negative power；

The third lens have focal power；

4th lens have focal power；

5th lens have focal power；

6th lens have positive light coke；And

7th lens have negative power, and object side is convex surface, and image side surface is concave surface,

Wherein, at least one side of at least one lens of first lens into the 7th lens is non-rotationally-symmetric non- Spherical surface.
2. pick-up lens group according to claim 1, which is characterized in that

The effective focal length fy of the Y direction of the effective focal length fx of the X-direction of the pick-up lens group and the pick-up lens group Between meet: 0.90 ﹤ fx/fy ﹤ 1.10.
3. pick-up lens group according to claim 1, which is characterized in that

Between the radius of curvature R 14 of the image side surface of the radius of curvature R 13 and the 7th lens of the object side of 7th lens Meet: 1.50 < R13/R14 < 3.00.
4. pick-up lens group according to claim 1, which is characterized in that

The airspace T45 of 4th lens and the 5th lens on the optical axis and the 5th lens and described the Six lens meet between the airspace T56 on the optical axis: 1.00 < T45/T56 < 3.50.
5. pick-up lens group according to claim 1, which is characterized in that

It is full between the radius of curvature R 9 of the object side of the radius of curvature R 8 and the 5th lens of the image side surface of 4th lens Foot: 0.30 < R8/R9 < 2.00.
6. pick-up lens group according to claim 1, which is characterized in that

The effective radius vertex of the object side of the object side of 5th lens and the intersection point of the optical axis to the 5th lens Between axis on distance SAG51 and the 5th lens image side surface and the optical axis intersection point to the image side of the 5th lens Meet between distance SAG52 on axis between the effective radius vertex in face: 0.50 < SAG51/SAG52 < 1.50.
7. pick-up lens group according to claim 1, which is characterized in that

Distance TD and first lens to institute on the object side of first lens to the axis of the image side surface of the 7th lens It states in the 7th lens between arbitrary neighborhood two lens with focal power between the summation ∑ AT of the airspace on optical axis Meet: ∑ AT/TD < 0.35.
8. pick-up lens group according to claim 1, which is characterized in that

Meet between the effective focal length fy of the Y direction of the effective focal length f6 and pick-up lens group of 6th lens: 1.00<f6/fy<2.50。
9. pick-up lens group according to any one of claim 1 to 8, which is characterized in that

Distance TTL of the imaging surface on the optical axis of the object side of first lens to the pick-up lens group takes the photograph with described As lens group imaging surface on effective pixel area diagonal line length half ImgH between meet: TTL/ImgH < 1.60.
10. pick-up lens group according to any one of claim 1 to 8, which is characterized in that

The object side of center thickness CT5 of 5th lens on the optical axis and first lens is to the pick-up lens Meet between distance TTL on the axis of the imaging surface of group: 4.00 < CT5*100/TTL < 10.00.