CN109445072A

CN109445072A - Pick-up lens group

Info

Publication number: CN109445072A
Application number: CN201811599192.7A
Authority: CN
Inventors: 李阳; 戴付建; 赵烈烽; 贾远林; 徐武超
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2019-03-08

Abstract

A kind of pick-up lens group is provided, by object side to image side sequentially includes the first lens, the second lens, the third lens, the 4th lens and the 5th lens along optical axis, wherein the first lens have positive light coke, object side is convex surface；Second lens have negative power, and image side surface is concave surface；The third lens have positive light coke；4th lens have focal power；And the 5th lens have focal power, its image side surface is concave surface, wherein, the at least one side of at least one lens of first lens into the 5th lens is non-rotationally-symmetric aspherical, and wherein, the effective focal length fx of the X-direction of the pick-up lens group and the effective focal length fy of its Y direction meet 0.5 < fx/fy < 1.5.

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 five lens.

Background technique

Recently, with the development of miniaturization pick-up lens, and with the Complimentary Metal-Oxide half of large scale, high pixel Universal, performance proposition of each manufacturer terminal to pick-up lens of the chip of conductor element (CMOS) or photosensitive coupling element (CCD) Higher requirement.Since current each Terminal Type camera lens mostly uses the aspherical this surface structure of rotational symmetry (axial symmetry), And it only has a sufficient freedom degree on meridian direction, thus cannot well to meridian aberration outside axis and sagitta of arc aberration into Row effectively corrects.

Summary of the invention

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 It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric 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 The effective focal length fy of Y direction can meet 0.5 < fx/fy < 1.5.

According to the application embodiment, the radius of curvature R 1 of the object side of the first lens and the image side of the first lens - 2.00 < (R1+R2)/(R1-R2) < -1.00 can be met between the radius of curvature R 2 in face.

According to the application embodiment, the airspace T12 and of the first lens and the second lens on optical axis Three lens and the 4th lens can meet 5.50 < T34/T12 < 12.50 between the airspace T34 on optical axis.

According to the application embodiment, the radius of curvature R 6 of the image side surface of the third lens and the object side of the 4th lens - 3.00 < R6/R7 < -1.00 can be met between the radius of curvature R 7 in face.

According to the application embodiment, the picture of the third lens the center thickness CT3 on optical axis and the third lens It can expire between distance SAG32 on the intersection point of side and optical axis to the axis between the effective radius vertex of the image side surface of the third lens Foot -3.50 < CT3/SAG32 < -2.00.

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 - 0.70 < SAG51/SAG52 < 1.30 can be met between distance SAG52 on axis between the effective radius vertex of image side surface.

According to the application embodiment, center thickness CT1 and first lens and of first lens on optical axis Two lens can meet 5.00 < CT1/T12 < 11.50 between the airspace T12 on optical axis.

According to the application embodiment, the airspace T12 and of the first lens and the second lens on optical axis Can meet between distance TTL on the object side of one lens to the axis of the imaging surface of pick-up lens group 1.00 < (T12*100)/TTL < 2.50。

According to the application embodiment, distance on the object side to the axis of the image side surface of the 5th lens of the first lens Airspace of arbitrary neighborhood two lens with focal power on optical axis of TD and the first lens into the 5th lens it is total 2.50 < TD/ ∑ AT < 3.50 can be met between ∑ AT.

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 < 1.45.

According to the application embodiment, center thickness CT1 of first lens on optical axis and pick-up lens group 5.00 < ImgH/CT1 < 6.00 can be met between the half ImgH of effective pixel area diagonal line length on imaging surface.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.It can expire between the radius of curvature R 2 of the image side surface of the radius of curvature R 1 and the first lens of the object side of first lens Foot -2.00 < (R1+R2)/(R1-R2) < -1.00.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.The airspace T12 of first lens and the second lens on optical axis and the third lens and the 4th lens are in optical axis On airspace T34 between can meet 5.50 < T34/T12 < 12.50.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.It can expire between the radius of curvature R 7 of the object side of the radius of curvature R 6 and the 4th lens of the image side surface of the third lens Foot -3.00 < R6/R7 < -1.00.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.The intersection point of the image side surface and optical axis of center thickness CT3 of the third lens on optical axis and the third lens is to third - 3.50 < CT3/SAG32 < -2.00 can be met between distance SAG32 on axis between the effective radius vertex of the image side surface of lens.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.The object side of 5th lens and the intersection point of optical axis are between the effective radius vertex of the object side of the 5th lens On axis the intersection point of the image side surface and optical axis of distance SAG51 and the 5th lens to the 5th lens image side surface effective radius vertex it Between axis on can meet -0.70 < SAG51/SAG52 < 1.30 between distance SAG52.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.Between the air of center thickness CT1 and the first lens and the second lens on optical axis of first lens on optical axis 5.00 < CT1/T12 < 11.50 can be met between T12.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.The object side of the airspace T12 and the first lens of first lens and the second lens on optical axis are to camera lens 1.00 < (T12*100)/TTL < 2.50 can be met between distance TTL on the axis of the imaging surface of head group.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.Distance TD and the first lens to the 5th lens on the object side of first lens to the axis of the image side surface of the 5th lens In arbitrary neighborhood two lens with focal power can meet 2.50 between the summation ∑ AT of the airspace on optical axis < TD/∑AT<3.50。

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.The object side of first lens to pick-up lens group distance TTL of the imaging surface on optical axis and pick-up lens group Imaging surface on effective pixel area diagonal line length half ImgH between can meet TTL/ImgH < 1.45.

According to the another aspect of the application, such a pick-up lens group is provided, the pick-up lens group is along optical axis It sequentially include the first lens, the second lens, the third lens, the 4th lens and the 5th lens by object side to image side.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface；Second lens can have negative power, and image side surface is concave surface；Third is saturating Mirror can have positive light coke；4th lens can have focal power；And the 5th lens can have a focal power, image side surface is recessed Face.Wherein, at least one side of at least one lens of first lens into the 5th lens can have non-rotationally-symmetric aspherical. The effective focal length fy of the Y direction of the effective focal length fx and pick-up lens group of the X-direction of the pick-up lens group can meet 0.5 < Fx/fy < 1.5.Center thickness CT1 of first lens on optical axis and effective pixel area pair on the imaging surface of pick-up lens group 5.00 < ImgH/CT1 < 6.00 can be met between the long half ImgH of linea angulata.

The application uses the pick-up lens group of five chip lens, and by the way that free form surface is applied to setting for pick-up lens In meter and production, to improve the image quality of pick-up lens group.It is worth in the application, by using free form surface, so that taking the photograph Have the advantages that high pixel, ultrathin, miniaturization as lens group so that the pick-up lens group can better meet it is all kinds of The use demand of special screne.

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 diagrammatically illustrates 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 diagrammatically illustrates 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 diagrammatically illustrates 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 diagrammatically illustrates 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 diagrammatically illustrates 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 diagrammatically illustrates 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 diagrammatically illustrates 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 five lens with focal power, That is, the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Five lens are along optical axis by pick-up lens group Object side to image side sequential, 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 positive light coke；4th lens can have focal power；And the Five lens can have focal power, and image side surface is concave surface.By the focal power for reasonably controlling each constituent element of imaging system Positive and negative distribution, can effectively balance control system low order aberration, and can reduce the sensibility of tolerance, maintain the small of system Type.

In addition, in this application, it can be by the object side of at least one lens of first lens into the 5th 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 the exemplary embodiment, the pick-up lens group of the application can meet 0.5 < fx/fy < 1.5 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 0.97≤fx/fy≤1.03 between fx and fy.Rationally the setting X of pick-up lens group, Y direction have Focal length is imitated, the outer meridian aberration of axis and sagitta of arc aberration of pick-up lens can be effectively corrected, promoted to obtain further image quality.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional -2.00 < (R1+R2)/(R1- R2) < -1.00, wherein R1 is the radius of curvature of the object side of the first lens, and R2 is the radius of curvature of the image side surface of the first lens. More specifically, can further meet -1.61≤(R1+R2)/(R1-R2)≤- 1.29 between R1 and R2.By constraining the first lens Object side radius of curvature R 1 and image side surface radius of curvature R 2 ratio, can reasonably control the first lens to imaging be The contribution amount of system astigmatism.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 5.50 < T34/T12 < 12.50, T12 is the airspace of the first lens and the second lens on optical axis, and T34 is the sky of the third lens and the 4th lens on optical axis Gas interval.More specifically, can further meet 5.57≤T34/T12≤12.14 between T34 and T12.By constraining the first lens The ratio between interval between the second airspace and the third lens and the 4th lens air between lens, can control each visual field Curvature of field contribution amount be in reasonable range.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional -3.00 < R6/R7 < -1.00, R6 For the radius of curvature of the image side surface of the third lens, R7 is the radius of curvature of the object side of the 4th lens.More specifically, R6 and R7 it Between can further meet -2.92≤R6/R7≤- 1.22.By the radius of curvature R 6 that the image side surface of the third lens is reasonably arranged With the ratio of the radius of curvature R 7 of the object side of the 4th lens, it is capable of the aberration of relatively easily balance system, to improve system Image quality.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional -3.50 < CT3/SAG32 < - 2.00, wherein CT3 is center thickness of the third lens on optical axis, and SAG32 is the image side surface of the third lens and the intersection point of optical axis Distance on to the axis between the effective radius vertex of the image side surface of the third lens.More specifically, between CT3 and SAG32 further - 3.30≤CT3/SAG32≤- 2.01 can be met.The optical mirror slip for meeting the requirement of the conditional can effectively reduce third The incidence angle of chief ray on the object side of lens, so as to improve the matching degree of camera lens and chip.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional -0.70 < SAG51/SAG52 < 1.30, 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 -0.75≤SAG51/SAG52 between SAG51 and SAG52 ≤1.22.By reasonably control the 5th lens object side and optical axis intersection point to the object side of the 5th lens effective radius On axis between vertex the intersection point of the image side surface of distance and the 5th lens and optical axis to the 5th lens image side surface effective radius Ratio of distances constant on axis between vertex can rationally control the processing subtended angle of the 5th lens, to avoid adding to subsequent technique The links such as work, molding, plated film bring difficulty.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 5.00 < CT1/T12 < 11.50, 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 5.18≤CT1/T12≤11.46 between CT1 and T12.By the first lens of constraint in light The ratio between the airspace of center thickness and the first lens and the second lens on optical axis on axis, can control the curvature of field of each visual field Contribution amount is in reasonable range, while being beneficial to the size compression of camera lens.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 1.00 < (T12*100)/TTL < 2.50, wherein T12 is the airspace of the first lens and the second lens on optical axis, and TTL is the object side of the first lens to taking the photograph As the imaging surface of lens group axis on distance.More specifically, can further meet between T12 and TTL 1.12≤(T12*100)/ TTL≤2.38.On object side to the axis of the imaging surface of pick-up lens group by constraining the first lens distance and the first lens and Airspace ratio of second lens on optical axis, can reasonably control system distortion contribution amount so that system have it is good Good distortion performance.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 2.50 < TD/ ∑ AT < 3.50, Middle TD is distance on the object side to the axis of the image side surface of the 5th lens of the first lens, and ∑ AT is the first lens into the 5th lens Airspace of arbitrary neighborhood two lens with focal power on optical axis summation.More specifically, between TD and ∑ AT 2.81≤TD/ ∑ AT≤3.03 can further be met.By constraining the object side of the first lens to the image side surface of the 5th lens The air of distance and the first lens into the 5th lens between arbitrary neighborhood two lens with focal power on optical axis on axis The ratio of the summation at interval is capable of the distortion of reasonably control system, so that system is showed with good distortion.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional TTL/ImgH < 1.45, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of pick-up lens group, ImgH be pick-up lens group at The half of effective pixel area diagonal line length in image planes.More specifically, can further meet TTL/ImgH between TTL and ImgH ≤1.42.By controlling the optics overall length of imaging system and the ratio of image height, optical system ultrathin and high pixel may be implemented The characteristics of.

In the exemplary embodiment, the pick-up lens group of the application can meet conditional 5.00 < ImgH/CT1 < 6.00, Wherein, CT1 is center thickness of first lens on optical axis, and ImgH is the effective pixel area on the imaging surface of pick-up lens group The half of diagonal line length.More specifically, can further meet 5.21≤ImgH/CT1≤5.77 between CT1 and ImgH.Pass through conjunction The ratio between the half of effective pixel area diagonal line length of constraint the first lens in reason ground on the center thickness and imaging surface on optical axis, Can be blocked up or excessively thin to avoid the first lens and bring difficulty to links such as technique processing, molding and assemblings, while can also protect The characteristics of demonstrate,proving ultrathin.

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 five 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, it is non-rotationally-symmetric aspherical by introducing, it is right The outer meridian aberration of the axis of pick-up lens group and sagitta of arc aberration are corrected, and can be obtained further image quality and be promoted.

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, the object side of the first lens, the second lens, the third lens, the 4th lens and each lens in the 5th lens and At least one of image side surface can be aspherical.Optionally, the first lens, the second lens, the third lens, the 4th lens and the 5th The object side of each lens in lens and image side surface can be aspherical.

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 five lens as an example in embodiments, but the pick-up lens group is not limited to include five lens.Such as Fruit needs, which may also include the lens of other quantity.

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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

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 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.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.

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		350.0000
STO	Spherical surface	It is infinite		-0.2681
								S1(AAS)	It is aspherical	1.4381	1.4327	0.5731	1.55/56.1	0.0610	-0.0170
S2	It is aspherical	9.8549		0.0503		-1.4145
								S3	It is aspherical	6.3842		0.2300	1.67/20.4	-5.2949
S4	It is aspherical	2.4467		0.2990		0.0335
								S5	It is aspherical	-15.2684		0.3879	1.55/56.1	-68.0194
S6	It is aspherical	-6.3544		0.6071		17.5088
								S7	It is aspherical	3.9278		0.4087	1.65/23.5	-0.3028
S8	It is aspherical	2.8762		0.2475		0.1995
								S9	It is aspherical	1.5995		0.7653	1.54/55.9	-1.0241
S10	It is aspherical	1.4247		0.3161		-1.0469
								S11	Spherical surface	It is infinite		0.2100	1.52/64.2
S12	Spherical surface	It is infinite		0.3659
								S13	Spherical surface	It is infinite

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 image side surface of the first lens E1 and the second lens E2, the third lens E3, the 4th lens E4 and The object side of any one lens and image side surface are aspherical in five lens E5.In the present embodiment, each non-spherical lens Face type x 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 is (that is, paraxial curvature c is upper

The inverse of 1 mean curvature radius R of table)；K is circular cone coefficient (having provided in table 1)；Ai is repairing for aspherical i-th rank Positive coefficient.The following table 2 give can be used for high-order coefficient A4, A6 of each aspherical mirror S3-S10 in embodiment 1, A8, A10, A12, A14, A16, A18 and A20.

Face number	A4	A6	A8	A10	A12
						S2	-1.2417E-01	4.188E-01	-1.8727E+00	1.0576E+01	-4.0468E+01
S3	-1.8130E-01	9.4834E-01	-5.5799E+00	3.1229E+01	-1.1445E+02
						S4	-9.7810E-02	1.0116E+00	-7.8275E+00	4.6479E+01	-1.7606E+02
S5	-1.5347E-01	-7.9365E-02	7.5329E-01	-5.1137E+00	2.0951E+01
						S6	-1.0415E-01	-1.5746E-01	8.9557E-01	-3.0118E+00	6.0172E+00
S7	-6.9815E-02	1.0547E-01	-1.9282E-01	1.6474E-01	-8.3635E-02
						S8	-2.6830E-01	4.3120E-01	-5.1088E-01	3.8411E-01	-1.9313E-01
S9	-3.9822E-01	2.6825E-01	-1.5693E-01	6.9828E-02	-2.0685E-02
						S10	-2.1168E-01	8.2217E-02	-1.6161E-02	-3.9023E-03	3.2833E-03

Face number	A14	A16	A18	A20
					S2	9.3793E+01	-1.2854E+02	9.6069E+01	-3.0176E+0
S3	2.6030E+02	-3.5641E+02	2.6944E+02	-8.6400E+01
					S4	4.1967E+02	-6.0935E+02	4.9241E+02	-1.6941E+02
S5	-5.3038E+01	8.1006E+01	-6.8386E+01	2.4902E+01
					S6	-6.8166E+00	3.9198E+00	-6.6758E-01	-1.6152E-01
S7	1.9942E-02	8.2563E-04	-1.2407E-03	1.5417E-04
					S8	6.4093E-02	-1.3285E-02	1.5466E-03	-7.6999E-05
S9	3.9116E-03	-4.5485E-04	2.9710E-05	-8.3617E-07
					S10	-8.6223E-04	1.1436E-04	-7.6936E-06	2.0857E-07

Table 2

It is non-by table 1 it can also be seen that the object side S1 of the first lens E1 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 of Z-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 are respectively 4 ranks, 6 ranks, 8 ranks, 10 in aspherical rotational symmetry component Level number；AP, BP, CP, DP are respectively 4 ranks, 6 ranks, 8 ranks, 10 level numbers in aspherical non-rotational symmetry component.The following table 3 is given AR, BR, CR, DR coefficient and AP, BP, CP, DP system of the non-rotationally-symmetric aspherical S1 in embodiment 1 are gone out can be used for Number.

The face AAS	AR	BR	CR	DR	AP	BP	CP	DP
									S1	0.0014	-0.0044	0.0108	-0.0166	0.4008	0.1935	-0.0853	-0.0426

Table 3

Table 4 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	3.00	fx(mm)	3.60
				f2(mm)	-6.10	fy(mm)	3.63
f3(mm)	19.64	TTL(mm)	4.46
				f4(mm)	-19.66	ImgH(mm)	3.18
f5(mm)	45.92	Semi-FOV(°)	39.26

Table 4

Pick-up lens group in embodiment 1 meets:

Fx/fy=0.99, 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.

(R1+R2)/(R1-R2)=- 1.34, wherein R1 is the radius of curvature of the object side S1 of the first lens E1, R2 the The radius of curvature of the image side surface S2 of one lens E1.

T34/T12=12.14, wherein T12 is the airspace of the first lens E1 and the second lens E2 on optical axis, T34 For the airspace of the third lens E3 and the 4th lens E4 on optical axis.

R6/R7=-1.62, wherein R6 is the radius of curvature of the image side surface S6 of the third lens E3, and R7 is the 4th lens E4's The radius of curvature of object side S7.

CT3/SAG32=-2.68, wherein CT3 is center thickness of the third lens E3 on optical axis, and SAG32 is that third is saturating Distance on the image side surface S6 of mirror E3 and the intersection point to the axis between the effective radius vertex of the image side surface S6 of the third lens E3 of optical axis.

SAG51/SAG52=1.22, wherein the intersection point of object side S9 and optical axis that SAG51 is the 5th lens E5 to the 5th Distance on axis between the effective radius vertex of the object side S9 of lens E5, SAG52 are the image side surface S10 and light of the 5th lens E5 Distance on the intersection point of axis to the axis between the effective radius vertex of the image side surface S10 of the 5th lens E5.

CT1/T12=11.46, wherein CT1 is center thickness of the first lens E1 on optical axis, and T12 is the first lens E1 With airspace of the second lens E2 on optical axis.

(T12*100)/TTL=1.12, wherein T12 is between the air of the first lens E1 and the second lens E2 on optical axis Every TTL is distance on the axis of the object side S1 to the imaging surface S13 of pick-up lens group of the first lens E1.

TD/ ∑ AT=2.97, wherein TD is the axis of the image side surface S10 of the object side S1 to the 5th lens E5 of the first lens E1 Upper distance, ∑ AT are arbitrary neighborhood two lens with focal power of the first lens E1 into the 5th lens E5 on optical axis The summation of airspace.

TTL/ImgH=1.40, wherein TTL is the object side S1 of the first lens E1 to the imaging surface S13 of pick-up lens group Distance on optical axis, ImgH are the half of the effective pixel area diagonal line length on the imaging surface S13 of pick-up lens group.

ImgH/CT1=5.55, wherein CT1 is center thickness of the first lens E1 on optical axis, and ImgH is pick-up lens The half of effective pixel area diagonal line length on the imaging surface S13 of group.

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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

Table 5 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)。

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		350.0000
STO	Spherical surface	It is infinite		-0.2716
								S1	It is aspherical	1.4498		0.6104	1.55/56.1	0.0022
S2	It is aspherical	6.9744		0.0841		-13.2068
								S3	It is aspherical	6.3557		0.2300	1.67/20.4	-5.6220
S4	It is aspherical	2.7912		0.2918		0.4871
								S5	It is aspherical	-16.0668		0.3858	1.55/56.1	-88.7965
S6	It is aspherical	-6.0338		0.6193		1.3022
								S7(AAS)	It is aspherical	4.9272	4.7170	0.4109	1.65/23.5	0.2780	-0.9240
S8	It is aspherical	3.1876		0.1765		0.0332
								S9	It is aspherical	1.6122		0.7428	1.54/55.9	-0.9965
S10	It is aspherical	1.4352		0.3011		-0.9886
								S11	Spherical surface	It is infinite		0.2100	1.52/64.2
S12	Spherical surface	It is infinite		0.3715
								S13	Spherical surface	It is infinite		0.0000

Table 5

As shown in Table 5, in example 2, in the first lens E1, the second lens E2, the third lens E3 and the 5th lens E5 The image side surface of the object side of any one lens and image side surface and the 4th lens E4 are aspherical；The object side of 4th lens E4 Face S7 is non-rotationally-symmetric aspherical.

Table 6 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.Table 7 show can be used for it is non-rotationally-symmetric aspherical in embodiment 2 The rotational symmetry component of S7 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face type can be by The formula (2) provided in above-described embodiment 1 limits.

Face number	A4	A6	A8	A10	A12
						S1	-8.0358E-03	6.7552E-02	-3.9282E-01	1.3868E+00	-3.3812E+00
S2	-7.9137E-02	-6.1084E-02	1.3040E+00	-5.6854E+00	1.4802E+01
						S3	-1.2707E-01	1.9660E-01	4.2594E-01	-1.3930E+00	3.5051E-01
S4	-7.4159E-02	3.9226E-01	-1.3371E+00	6.6157E+00	-2.2180E+01
						S5	-1.6997E-01	1.9166E-01	-1.6077E+00	7.3323E+00	-1.8444E+01
S6	-1.1114E-01	-1.6065E-01	9.2212E-01	-3.3992E+00	8.2970E+00
						S8	-2.0330E-01	2.6463E-01	-2.8682E-01	1.8286E-01	-7.2372E-02
S9	-4.0920E-01	2.7901E-01	-1.6002E-01	6.9714E-02	-2.0678E-02
						S10	-2.2422E-01	9.8520E-02	-3.1783E-02	5.4766E-03	4.3995E-05

Face number	A14	A16	A18	A20
					S1	5.5821E+00	-5.8952E+00	3.5361E+00	-9.0683E-01
S2	-2.4205E+01	2.3509E+01	-1.1920E+01	2.2973E+00
					S3	5.7494E+00	-1.3694E+01	1.3671E+01	-5.2072E+00
S4	4.6203E+01	-5.7712E+01	3.9510E+01	-1.1205E+01
					S5	2.5073E+01	-1.4563E+01	-1.7936E+00	4.1114E+00
S6	-1.2694E+01	1.1750E+01	-5.9848E+00	1.2873E+00
					S8	1.7601E-02	-2.3756E-03	1.3071E-04	8.5801E-07
S9	4.0250E-03	-4.9470E-04	3.4964E-05	-1.0858E-06
					S10	-2.1282E-04	3.9428E-05	-3.0600E-06	8.9065E-08

Table 6

The face AAS	AR	BR	CR	DR	AP	BP	CP	DP
									S7	-0.0137	-0.0419	-0.0006	0.0029	-0.0635	0.0108	-0.0066	0.0053

Table 7

Table 8 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

Table 8

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

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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

Table 9 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the pick-up lens group of embodiment 3 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 9

As shown in Table 9, in embodiment 3, any one lens in the second lens E2, the third lens E3 and the 4th lens E4 Object side and the image side surface S10 of image side surface S2 and the 5th lens E5 of image side surface and the first lens E1 be aspherical；The The object side S9 of the object side S1 and the 5th lens E5 of one lens E1 are non-rotationally-symmetric aspherical.

Table 10 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.Table 11 shows the non-rotationally-symmetric aspheric that can be used in embodiment 3 The rotational symmetry component of face S1 and S9 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face Type can be limited by the formula (2) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S2	-7.9293E-02	1.7009E-01	-2.2660E-01	6.0803E-01	-3.1201E+00
S3	-1.2363E-01	2.9450E-01	2.7175E-01	-4.2113E+00	1.7021E+01
						S4	-6.8754E-02	4.0311E-01	-1.8407E+00	9.9792E+00	-3.8393E+01
S5	-1.6307E-01	4.0718E-01	-3.7926E+00	1.9582E+01	-6.2944E+01
						S6	-1.0003E-01	-7.7234E-02	5.0849E-01	-2.3962E+00	6.8491E+00
S7	-5.8673E-02	5.3614E-02	-8.1610E-02	4.1812E-02	2.4784E-04
						S8	-2.1606E-01	2.7089E-01	-2.8563E-01	2.0559E-01	-1.0606E-01
S10	-1.4527E-01	-3.2791E-03	4.9630E-02	-3.4978E-02	1.2489E-02

Face number	A14	A16	A18	A20
					S2	9.0199E+00	-1.3506E+01	1.0099E+01	-2.9930E+00
S3	-3.8779E+01	5.2694E+01	-3.9735E+01	1.2769E+01
					S4	9.5891E+01	-1.4617E+02	1.2359E+02	-4.4317E+01
S5	1.2733E+02	-1.5747E+02	1.0909E+02	-3.2308E+01
					S6	-1.1824E+01	1.2177E+01	-6.8428E+00	1.6212E+00
S7	-1.6729E-02	1.0842E-02	-2.8242E-03	2.6766E-04
					S8	3.7411E-02	-8.2932E-03	1.0268E-03	-5.3905E-05
S10	-2.5670E-03	3.0531E-04	-1.9508E-05	5.1778E-07

Table 10

The face AAS	AR	BR	CR	DR	AP	BP	CP	DP
									S1	0.0000	-0.0062	0.0072	-0.0162	4.0957	0.1155	-0.0341	-0.0169
S9	-0.3072	0.0974	-0.0138	0.0007	0.0094	0.0034	-0.0035	-0.0118

Table 11

Table 12 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	3.10	fx(mm)	3.54
				f2(mm)	-6.43	fy(mm)	3.65
f3(mm)	18.52	TTL(mm)	4.50
				f4(mm)	-22.70	ImgH(mm)	3.18
f5(mm)	30.54	Semi-FOV(°)	40.51

Table 12

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

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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

Table 13 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)。

Table 13

As shown in Table 13, in example 4, any one in the first lens E1, the second lens E2 and the 5th lens E5 is saturating The image side surface S8 of the image side surface S6 and the 4th lens E4 of the object side of mirror and image side surface and the third lens E3 are aspherical；The The object side S7 of the object side S5 and the 4th lens E4 of three lens E3 are non-rotationally-symmetric aspherical.

Table 14 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.Table 15 shows the non-rotationally-symmetric aspheric that can be used in embodiment 4 The rotational symmetry component of face S5 and S7 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face Type can be limited by the formula (2) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	-2.8884E-02	7.0449E-01	-6.4837E+00	3.1185E+01	-8.8151E+01
S2	-1.2812E-01	4.8530E-01	-1.4057E-01	-1.0335E+01	5.3621E+01
						S3	-1.6754E-01	1.0226E+00	-6.3768E+00	2.9442E+01	-8.5051E+01
S4	-8.1848E-02	5.9640E-01	-3.3097E+00	1.5322E+01	-4.1290E+01
						S6	-1.0762E-01	-8.3918E-02	3.3246E-01	-6.7154E-01	6.4316E-01
S8	-1.8190E-01	2.2764E-01	-2.3782E-01	1.4622E-01	-5.5936E-02
						S9	-3.7465E-01	2.4010E-01	-1.2815E-01	5.1562E-02	-1.4012E-02
S10	-2.1500E-01	9.1638E-02	-2.9038E-02	5.0223E-03	-3.1929E-05

Face number	A14	A16	A18	A20
					S1	1.5181E+02	-1.5685E+02	8.9398E+01	-2.1617E+01
S2	-1.2929E+02	1.6869E+02	-1.1517E+02	3.2378E+01
					S3	1.5383E+02	-1.7078E+02	1.0668E+02	-2.8687E+01
S4	6.4192E+01	-5.5173E+01	2.2576E+01	-2.4987E+00
					S6	1.8374E-01	-1.0182E+00	8.9119E-01	-2.6451E-01
S8	1.3241E-02	-1.7826E-03	1.0911E-04	-1.0659E-06
					S9	2.4760E-03	-2.7383E-04	1.7290E-05	-4.7754E-07
S10	-1.6391E-04	3.0486E-05	-2.3281E-06	6.6419E-08

Table 14

The face AAS	AR	BR	CR	DR	AP	BP	CP	DP
									S5	-0.1541	0.0162	-0.0187	0.0344	-0.0012	0.0551	0.0433	-0.0232
S7	-0.0128	-0.0379	-0.0006	0.0024	0.0548	0.0007	0.0170	-0.0011

Table 15

Table 16 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	3.05	fx(mm)	3.72
				f2(mm)	-6.27	fy(mm)	3.61
f3(mm)	13.33	TTL(mm)	4.50
				f4(mm)	-10.29	ImgH(mm)	3.18
f5(mm)	72.68	Semi-FOV(°)	40.00

Table 16

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 shows the structural schematic diagram of the pick-up lens group according to the embodiment of the present application 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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

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 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.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.

Table 17 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)。

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		350.0000
STO	Spherical surface	It is infinite		-0.2934
								S1(AAS)	It is aspherical	1.4401	1.4368	0.5535	1.55/56.1	0.0170	0.0670
S2	It is aspherical	8.0440		0.1072		-3.4693
								S3	It is aspherical	5.7847		0.2300	1.67/20.4	-4.5926
S4	It is aspherical	2.3350		0.2838		0.2120
								S5	It is aspherical	23.4045		0.3739	1.55/56.1	50.0000
S6(AAS)	It is aspherical	-14.4022	-16.1290	0.6142		-54.0780	-90.0000
								S7	It is aspherical	4.9383		0.4605	1.65/23.5	-0.5207
S8	It is aspherical	3.5086		0.2454		0.3341
								S9	It is aspherical	1.6404		0.7770	1.54/55.9	-1.0220
S10	It is aspherical	1.4582		0.3070		-1.1108
								S11	Spherical surface	It is infinite		0.2100	1.52/64.2
S12	Spherical surface	It is infinite		0.3374
								S13	Spherical surface	It is infinite		0.0000

Table 17

As shown in Table 17, in embodiment 5, any one in the second lens E2, the 4th lens E4 and the 5th lens E5 is saturating The object side S5 of the image side surface S2 and the third lens E3 of the object side of mirror and image side surface and the first lens E1 are aspherical；The The image side surface S6 of the object side S1 and the third lens E3 of one lens E1 are non-rotationally-symmetric aspherical.

Table 18 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.Table 19 shows the non-rotationally-symmetric aspheric that can be used in embodiment 5 The rotational symmetry component of face S1 and S6 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face Type can be limited by the formula (2) provided in above-described embodiment 1.

Face number	A14	A16	A18	A20
					S2	-7.2907E+00	7.8933E+00	-4.4355E+00	1.0051E+00
S3	-2.7082E+00	3.0513E+00	-1.5072E+00	2.2900E-01
					S4	-6.8090E+01	8.6948E+01	-6.1869E+01	1.8939E+01
S5	1.2714E+01	-6.4542E+00	-1.8027E+00	2.3511E+00
					S7	4.6737E-02	-1.1307E-02	1.3333E-03	-5.7022E-05
S8	2.9903E-02	-5.9658E-03	6.6021E-04	-3.0791E-05
					S9	9.8157E-04	-1.0037E-04	5.7659E-06	-1.4252E-07
S10	-1.2851E-03	1.5267E-04	-9.5286E-06	2.4342E-07

Table 18

The face AAS	AR	BR	CR	DR	AP	BP	CP	DP
									S1	-0.0012	-0.0014	0.0046	-0.0061	0.1838	-0.2723	0.1525	0.0756
S6	-0.1137	0.0151	-0.0333	0.0335	-0.0082	-0.0385	0.0175	0.0111

Table 19

Table 20 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	3.12	fx(mm)	3.67
				f2(mm)	-6.04	fy(mm)	3.63
f3(mm)	17.62	TTL(mm)	4.50
				f4(mm)	-21.52	ImgH(mm)	3.18
f5(mm)	49.97	Semi-FOV(°)	40.10

Table 20

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 the structural schematic diagram of the pick-up lens group according to 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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

Table 21 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		350.0000
STO	Spherical surface	It is infinite		-0.2934
								S1(AAS)	It is aspherical	1.4391	1.4184	0.5576	1.55/56.1	0.0350	0.0850
S2	It is aspherical	8.2586		0.1064		0.9433
								S3	It is aspherical	6.2626		0.2300	1.67/20.4	-6.8211
S4	It is aspherical	2.3831		0.2905		0.2946
								S5	It is aspherical	29.1853		0.3805	1.55/56.1	50.0000
S6(AAS)	It is aspherical	-11.7716	-17.8571	0.5978		39.8025	-60.6174
								S7	It is aspherical	5.0466		0.4547	1.65/23.5	-1.3665
S8	It is aspherical	3.5440		0.2359		0.2753
								S9	It is aspherical	1.6377		0.7791	1.54/55.9	-1.0228
S10	It is aspherical	1.4551		0.3120		-1.1126
								S11	Spherical surface	It is infinite		0.2100	1.52/64.2
S12	Spherical surface	It is infinite		0.3455
								S13	Spherical surface	It is infinite		0.0000

Table 21

As shown in Table 21, in embodiment 6, any one in the second lens E2, the 4th lens E4 and the 5th lens E5 is saturating The object side S5 of the image side surface S2 and the third lens E3 of the object side of mirror and image side surface and the first lens E1 are aspherical；The The image side surface S6 of the object side S1 and the third lens E3 of one lens E1 are non-rotationally-symmetric aspherical.

Table 22 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.Table 23 shows the non-rotationally-symmetric aspheric that can be used in embodiment 6 The rotational symmetry component of face S1 and S6 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face Type can be limited by the formula (2) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S2	-7.0343E-02	1.1179E-01	1.9240E-01	-1.5556E+00	4.5729E+00
S3	-1.4455E-01	4.3957E-01	-8.7772E-01	2.1599E+00	-4.8866E+00
						S4	-8.0993E-02	1.7097E-01	1.4642E+00	-1.0529E+01	3.8663E+01
S5	-1.5801E-01	2.4822E-01	-1.4532E+00	4.8673E+00	-7.8133E+00
						S7	-3.8957E-02	4.3286E-02	-1.1948E-01	1.3245E-01	-9.8518E-02
S8	-2.0386E-01	2.6731E-01	-2.7878E-01	1.8936E-01	-8.9817E-02
						S9	-3.3555E-01	1.6676E-01	-6.8463E-02	2.3849E-02	-6.0001E-03
S10	-1.7582E-01	4.3855E-02	9.6079E-03	-1.4730E-02	6.1200E-03

Face number	A14	A16	A18	A20
					S2	-7.8103E+00	7.8286E+00	-4.2095E+00	9.3016E-01
S3	7.7257E+00	-7.7221E+00	4.4424E+00	-1.1213E+00
					S4	-8.5592E+01	1.1449E+02	-8.5130E+01	2.7107E+01
S5	8.9314E-01	1.6233E+01	-2.2359E+01	9.6731E+00
					S7	4.3546E-02	-1.0279E-02	1.1502E-03	-4.3473E-05
S8	2.8853E-02	-5.7990E-03	6.4785E-04	-3.0528E-05
					S9	9.9396E-04	-1.0219E-04	5.9144E-06	-1.4761E-07
S10	-1.3185E-03	1.5749E-04	-9.8571E-06	2.5212E-07

Table 22

The face ASS	AR	BR	CR	DR	AP	BP	CP	DP
									S1	-0.0003	-0.0009	0.0055	-0.0052	0.1968	-0.3518	0.1432	0.0900
S6	-0.1147	0.0148	-0.0339	0.0332	-0.0178	-0.0946	0.0378	0.0204

Table 23

Table 24 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

f1(mm)	3.05	fx(mm)	3.70
				f2(mm)	-5.91	fy(mm)	3.63
f3(mm)	20.40	TTL(mm)	4.50
				f4(mm)	-20.95	ImgH(mm)	3.18
f5(mm)	49.60	Semi-FOV(°)	40.35

Table 24

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 the structural schematic diagram of the pick-up lens group according to 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 includes: diaphragm STO, the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, optical filter E6 and imaging surface S13.

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 positive light coke, and object side S7 is convex surface, and image side surface S8 is concave surface.The Five lens E5 have negative power, and object side S9 is convex surface, and image side surface S10 is concave surface.Optical filter E6 have object side S11 and Image side surface S12.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface S13.

Table 25 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	350.0000
STO	Spherical surface	It is infinite		-0.3341
								S1	It is aspherical	1.3424	0.5783	1.55/56.1	0.0587
S2	It is aspherical	5.7748		0.0560		-5.9423
								S3	It is aspherical	5.6592	0.2300	1.67/20.4	-5.0636
S4(AAS)	It is aspherical	2.5523	2.6096	0.2609		0.6520	1.7280
								S5	It is aspherical	-14.2010	0.3609	1.55/56.1	-48.4936
S6	It is aspherical	-7.9714		0.5754		52.8824
								S7	It is aspherical	4.6401	0.4827	1.65/23.5	-0.7325
S8	It is aspherical	6.2508		0.3170		7.8430
								S9	It is aspherical	2.0740	0.5998	1.54/55.9	-0.8723
S10	It is aspherical	1.3449		0.2666		-1.0474
								S11	Spherical surface	It is infinite	0.2100	1.52/64.2
S12	Spherical surface	It is infinite		0.3736
								S13	Spherical surface	It is infinite	0.0000

Table 25

As shown in Table 25, in embodiment 7, in the first lens E1, the third lens E3, the 4th lens E4 and the 5th lens E5 The object side S3 of the object side of any one lens and image side surface and the second lens E2 are aspherical；The picture of second lens E2 Side S4 is non-rotationally-symmetric aspherical.

Table 26 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.Table 27 shows the non-rotationally-symmetric aspheric that can be used in embodiment 7 The rotational symmetry component of face S4 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face type can It is limited by the formula (2) provided in above-described embodiment 1.

Face number	A4	A6	A8	A10	A12
						S1	-2.5072E-03	-1.0507E-02	3.5153E-01	-2.4775E+00	8.7273E+00
S2	-1.4061E-01	1.3742E-01	1.6546E+00	-1.0596E+01	3.6193E+01
						S3	-1.7804E-01	2.6614E-01	2.5394E+00	-1.7739E+01	6.5870E+01
S5	-1.9948E-01	-4.2905E-01	5.2454E+00	-3.3344E+01	1.2891E+02
						S6	-1.6157E-01	-6.8111E-02	1.1197E+00	-5.4149E+00	1.4574E+01
S7	-9.3769E-02	1.5406E-01	-2.9979E-01	2.5003E-01	-8.5114E-02
						S8	-1.9968E-01	3.6738E-01	-4.8056E-01	3.7093E-01	-1.8405E-01
S9	-4.2538E-01	2.9234E-01	-1.5233E-01	5.4366E-02	-1.1156E-02
						S10	-3.1021E-01	1.9124E-01	-9.4738E-02	3.1386E-02	-6.4869E-03

Face number	A14	A16	A18	A20
					S1	-1.7642E+01	2.0739E+01	-1.3183E+01	3.4943E+00
S2	-7.6538E+01	9.9266E+01	-7.2836E+01	2.3146E+01
					S3	-1.5174E+02	2.1365E+02	-1.6854E+02	5.6940E+01
S5	-3.1213E+02	4.6247E+02	-3.8232E+02	1.3532E+02
					S6	-2.3113E+01	2.1564E+01	-1.0789E+01	2.2082E+00
S7	-3.2178E-02	4.0975E-02	-1.3603E-02	1.5418E-03
					S8	5.8126E-02	-1.0952E-02	1.0859E-03	-4.1448E-05
S9	9.1749E-04	7.4590E-05	-2.0431E-05	1.1441E-06
					S10	7.7634E-04	-4.5058E-05	4.4431E-07	4.3316E-08

Table 26

The face ASS	AR	BR	CR	DR	AP	BP	CP	DP
									S4	-0.08140	0.3901	-0.3461	0.2962	0.0795	0.03530	0.01170	-0.01830

Table 27

Table 28 give the effective focal length f1 to f5 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 S13 on optical axis), effective pixel area diagonal line length on imaging surface S13 one Half ImgH and maximum angle of half field-of view Semi-FOV.

Table 28

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 29.

Table 29

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 group described above In.

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 and the 5th lens, which is characterized in that

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

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

The third lens have positive light coke；

4th lens have focal power；

5th lens have focal power, and image side surface is concave surface,

Wherein, at least one side of at least one lens of first lens into the 5th lens is non-rotationally-symmetric non- Spherical surface.
2. pick-up lens group according to claim 1, which is characterized in that the X-direction of the pick-up lens group it is effective The effective focal length fy of the Y direction of focal length fx and the pick-up lens group meets: 0.5 < fx/fy < 1.5.
3. pick-up lens group according to claim 1 or 2, which is characterized in that

It is full between the radius of curvature R 2 of the image side surface of the radius of curvature R 1 of the object side of first lens and first lens Foot: -2.00 < (R1+R2)/(R1-R2) < -1.00.
4. pick-up lens group according to claim 1 or 2, which is characterized in that

The airspace T12 of first lens and second lens on optical axis and the third lens and the described 4th are thoroughly Mirror meets between the airspace T34 on optical axis: 5.50 < T34/T12 < 12.50.
5. pick-up lens group according to claim 1 or 2, which is characterized in that

It is full between the radius of curvature R 7 of the object side of the radius of curvature R 6 of the image side surface of the third lens and the 4th lens Foot: -3.00 < R6/R7 < -1.00.
6. pick-up lens group according to claim 1 or 2, which is characterized in that

The intersection point of the image side surfaces of center thickness CT3 of the third lens on optical axis and the third lens and optical axis is to described Meet between distance SAG32 on axis between the effective radius vertex of the image side surface of the third lens: -3.50 < CT3/SAG32 < - 2.00。
7. pick-up lens group according to claim 1 or 2, which is characterized in that

Between the effective radius vertex of the object side of the object side of 5th lens and the intersection point of optical axis to the 5th lens Axis on distance SAG51 and the 5th lens image side surface and optical axis intersection point to the 5th lens image side surface it is effective Meet between distance SAG52 on axis between radius vertex: -0.70 < SAG51/SAG52 < 1.30.
8. pick-up lens group according to any one of claim 1 to 7, which is characterized in that

Object side to the institute of the airspace T12 of first lens and second lens on optical axis and first lens It states and meets between distance TTL on the axis of the imaging surface of pick-up lens group: 1.00 < (T12*100)/TTL < 2.50.
9. pick-up lens group according to any one of claim 1 to 7, 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 5th lens Arbitrary neighborhood two lens with focal power stated in the 5th lens are full between the summation ∑ AT of the airspace on optical axis Foot: 2.50 < TD/ ∑ AT < 3.50.
10. pick-up lens group according to any one of claim 1 to 7, 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 < 1.45.