CN110262014A - Optical imaging lens group - Google Patents

Abstract

This application discloses a kind of optical imaging lens groups, by object side to image side sequentially include: diaphragm along optical axis；The first lens with focal power；The second lens with focal power, image side surface are convex surface；The third lens with focal power, object side are concave surface, and image side surface is convex surface；The 4th lens with focal power, object side are convex surface, and image side surface is concave surface, and at least one of the object side of the 4th lens and image side surface have the point of inflexion；The 5th lens with positive light coke, and the image side surface of the 5th lens has the point of inflexion.Wherein, the object side of the first lens of optical imaging lens group to distance TTL of the imaging surface on optical axis of optical imaging lens group, optical imaging lens group total effective focal length f and imaging surface on the half ImgH of effective pixel area diagonal line length meet: 3.50mm < ImgH/f × TTL < 5.00mm.

Description

Optical imaging lens group

Technical field

This application involves a kind of optical imaging lens groups, more particularly, to a kind of optical imagery including five lens Lens group.

Background technique

As the technical capability of portable electronic device is constantly promoted, traditional camera is replaced currently with cell-phone camera Trend is more and more obvious, and masses also more and more favor the mobile phone with high quality camera function.In order in all directions be user There is provided high quality camera function, at present mainstream using lens group in the form of be ultra-thin big image planes camera lens+telephoto lens+wide-angle The combination of camera lens, wherein wide-angle lens is since it has the characteristics that field angle is big, the depth of field is long, it is easy to give a kind of distant view of photographer Sense is conducive to the appeal for enhancing picture, and photographer is allowed to have a kind of feeling on the spot in person.

Summary of the invention

On the one hand the application provides such a optical imaging lens group, the optical imaging lens group is along optical axis by object Side to image side sequentially includes: diaphragm；The first lens with focal power；The second lens with focal power, image side surface are convex Face；The third lens with focal power, object side are concave surface, and image side surface is convex surface；The 4th lens with focal power, Object side is convex surface, and image side surface is concave surface, and at least one of the object side of the 4th lens and image side surface have the point of inflexion； And the 5th lens with positive light coke, and the image side surface of the 5th lens has the point of inflexion.

In one embodiment, the object side of the first lens to optical imaging lens group imaging surface on optical axis away from From effective pixel area diagonal line on TTL, total effective focal length f of optical imaging lens group and the imaging surface of optical imaging lens group Long half ImgH can meet: 3.50mm < ImgH/f × TTL < 5.00mm.

In one embodiment, the maximum angle of half field-of view Semi-FOV of optical imaging lens group can meet: Semi-FOV 53.0 ° of >.

In one embodiment, total effective focal length f of optical imaging lens group and the effective focal length f5 of the 5th lens can Meet: 0.50 < f5/f < 2.50.

In one embodiment, the curvature of the object side of total effective focal length f and the 5th lens of optical imaging lens group Radius R9 can meet: 1.00 < f/R9 < 3.50.

In one embodiment, the curvature of the object side of the radius of curvature R 4 and the third lens of the image side surface of the second lens Radius R5 can meet: 2.00 < (R4+R5)/(R4-R5) < 3.50.

In one embodiment, center thickness CT4 of the 4th lens on optical axis exists with the 4th lens and the 5th lens Spacing distance T45 on optical axis can meet: 4.00 < CT4/T45 < 10.50.

In one embodiment, the intersection point of the object side of the third lens and optical axis is effective to the object side of the third lens On the axis on radius vertex the intersection point of the image side surface and optical axis of distance SAG31 and the third lens to the third lens image side surface it is effective Distance SAG32 can meet on the axis on radius vertex: 12.00 < (SAG31+SAG32)/(SAG31-SAG32) < 30.50.

In one embodiment, center thickness CT2 of second lens on optical axis exists with the second lens and the third lens Spacing distance T23 on optical axis can meet: 2.50 < CT2/T23 < 6.00.

In one embodiment, the object side of the first lens to the 5th lens distance TD of the image side surface on optical axis with First lens summation ∑ AT of spacing distance of two lens of arbitrary neighborhood on optical axis into the 5th lens can meet: ∑ AT/TD < 0.20.

In one embodiment, the spacing distance T34 and optical imaging lens of the third lens and the 4th lens on optical axis The half ImgH of effective pixel area diagonal line length can meet on the imaging surface of head group: 1.00 100 × T34/ImgH of < < 3.00.

The application uses five non-spherical lenses, by each power of lens of reasonable distribution, face type, each lens Spacing etc. on axis between heart thickness and each lens, so that above-mentioned optical imaging lens group has ultrathin, extra small head, height At least one beneficial effect such as image quality can preferably be suitable for matching under Mobile phone screen according to the optical imaging lens group of the application It sets.

Detailed description of the invention

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other Feature, objects and advantages will become more apparent upon:

Fig. 1 shows the structural schematic diagram of the optical imaging lens group according to the embodiment of the present application 1；

Fig. 2A to Fig. 2 D respectively illustrates chromatic curve on the axis of the optical imaging lens group of embodiment 1, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；

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

Fig. 4 A to Fig. 4 D respectively illustrates chromatic curve on the axis of the optical imaging lens group of embodiment 2, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；

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

Fig. 6 A to Fig. 6 D respectively illustrates chromatic curve on the axis of the optical imaging lens group of embodiment 3, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；

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

Fig. 8 A to Fig. 8 D respectively illustrates chromatic curve on the axis of the optical imaging lens group of embodiment 4, astigmatism curve, abnormal Varied curve and ratio chromatism, curve；

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

Figure 10 A to Figure 10 D respectively illustrate chromatic curve on the axis of the optical imaging lens group of embodiment 5, astigmatism curve, Distortion curve and ratio chromatism, curve；

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

Figure 12 A to Figure 12 D respectively illustrate chromatic curve on the axis of the optical imaging lens group of embodiment 6, astigmatism curve, Distortion curve and ratio chromatism, curve.

Specific embodiment

Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute Any and all combinations of one or more of list of items.

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

In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.

Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define convex surface position When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position When, then it represents that the lens surface is concave surface near axis area is less than.Each lens are known as this thoroughly near the surface of subject The object side of mirror, each lens are known as the image side surface of the lens near the surface of imaging surface.

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

Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and It will not be explained with idealization or excessively formal sense, unless clear herein so limit.

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

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

Optical imaging lens group according to the application illustrative embodiments may include such as five saturating with focal power Mirror is the first lens, the second lens, the third lens, the 4th lens and the 5th lens respectively.This five lens are along optical axis from object Side to image side sequential.First lens can have spacing distance between two lens of arbitrary neighborhood into the 5th lens.

In the exemplary embodiment, the first lens have focal power；Second lens have focal power, and image side surface is convex Face；The third lens have focal power, and object side is concave surface, and image side surface is convex surface；4th lens have focal power, object side Face is convex surface, and image side surface is concave surface, and at least one of the object side of the 4th lens and image side surface have the point of inflexion；And 5th lens can have positive light coke, and the image side surface of the 5th lens has the point of inflexion.

The image side surface of second lens be convex surface, the third lens object side be the image side surfaces of concave surface and the third lens be convex Face is provided to while lifting system FOV, so that the available better convergence of light, improves system image quality.4th thoroughly The male and female face type of mirror improves system spherical aberration primarily to central vision light is made to have good aggregate capabilities.Guarantee the 4th The image side surface of object side and/or image side surface at least one point of inflexion, the 5th lens of guarantee of lens is anti-with at least one Song point and the 5th lens of guarantee have positive light coke, can excessively dissipate to avoid peripheral field light, so that system has more Good coma corrects ability.

It in the exemplary embodiment, further include that setting is saturating with first in object side according to the optical imaging lens group of the application Diaphragm between mirror.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 3.50mm < ImgH/f × TTL < 5.00mm, wherein TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical imaging lens group, F is total effective focal length of optical imaging lens group, and ImgH is that effective pixel area is diagonal on the imaging surface of optical imaging lens group The half of wire length.More specifically, TTL, f and ImgH can further meet 3.6mm < ImgH/f × TTL < 4.60mm.Meet 3.50mm < ImgH/f × TTL < 5.00mm, not only can avoid system optics overall length too long while lifting system FOV, but also It can make that good practicability is had according to the optical imaging lens group of the application.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 53.0 ° of Semi-FOV >, Wherein, Semi-FOV is the maximum angle of half field-of view of optical imaging lens group.More specifically, Semi-FOV can further meet 53.2 ° of Semi-FOV >.Meet 53.0 ° of Semi-FOV >, it can be with the wide-angle advantage of improving optical imaging lens group, so that camera lens Group has more wide areas imaging.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 0.50 < f5/f < 2.50, Wherein, f is total effective focal length of optical imaging lens group, and f5 is the effective focal length of the 5th lens.More specifically, f and f5 is into one Step can meet 0.70 < f5/f < 2.10.Meet 0.50 < f5/f < 2.50, it both can be excessive due to undertaking to avoid the 5th lens Light aggregation feature and lead to its processing difficulties, and can be excessive to avoid the system depth of field due to optical imaging lens group and lead A possibility that imaging effect of cause is poor.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 1.00 < f/R9 < 3.50, Wherein, f is total effective focal length of optical imaging lens group, and R9 is the radius of curvature of the object side of the 5th lens.More specifically, f 1.40 < f/R9 < 3.48 can further be met with R9.Meet 1.00 < f/R9 < 3.50, it both can be to avoid due to the 5th lens Object side radius of curvature it is too small and the problem of lead to the 5th lens processing difficulties, and can be to avoid the object due to the 5th lens Optical imaging lens group cannot support bigger FOV and image quality is caused to be deteriorated caused by the radius of curvature of side is excessive Problem.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 2.00 < (R4+R5)/ (R4-R5) 3.50 <, wherein R4 is the radius of curvature of the image side surface of the second lens, and R5 is the curvature of the object side of the third lens Radius.More specifically, R4 and R5 can further meet 2.02 < (R4+R5)/(R4-R5) < 3.20.Meet 2.00 < (R4+ R5)/(R4-R5) < 3.50 is conducive to preferably converge incident ray, while being conducive to avoid excessively being bent due to lens face type Caused by processing difficulties the problems such as, can also effectively enhance the practicability of imaging lens group.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 4.00 < CT4/T45 < 10.50, wherein CT4 is center thickness of the 4th lens on optical axis, and T45 is the 4th lens and the 5th lens on optical axis Spacing distance.More specifically, CT4 and T45 can further meet 4.15 < CT4/T45 < 10.05.Meet 4.00 < CT4/T45 < 10.50 not only it is possible to prevente effectively from generating ghost image between the 4th lens and the 5th lens, but also can make the optical imaging lens group Have the function of better spherical aberration and distortion correction.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 12.00 < (SAG31+ SAG32)/(SAG31-SAG32) < 30.50, wherein SAG31 be the third lens object side and optical axis intersection point it is saturating to third Distance on the axis on the effective radius vertex of the object side of mirror, SAG32 be the third lens image side surface and optical axis intersection point to third Distance on the axis on the effective radius vertex of the image side surface of lens.More specifically, SAG31 and SAG32 can further meet 12.25 < (SAG31+SAG32)/(SAG31-SAG32) < 30.15.Meet 12.00 < (SAG31+SAG32)/(SAG31-SAG32) < 30.50, it both can be excessively bent to avoid the third lens, and reduce difficulty of processing, the assembling of the optical imaging lens group can also be made With higher stability.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 2.50 < CT2/T23 < 6.00, wherein CT2 is center thickness of second lens on optical axis, T23 be the second lens and the third lens on optical axis between Gauge from.More specifically, CT2 and T23 can further meet 2.75 < CT2/T23 < 5.60.Meet 2.50 < CT2/T23 < 6.00, not only it is possible to prevente effectively from generating ghost image between the second lens and the third lens, but also the optical imaging lens group can be made to have There are better spherical aberration and distortion correction function.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: ∑ AT/TD < 0.20, In, ∑ AT is the summation of the first lens spacing distance of two lens of arbitrary neighborhood on optical axis into the 5th lens, TD first The object side of lens to the 5th lens distance of the image side surface on optical axis.More specifically, ∑ AT and TD can further meet 1.0 < ∑ AT/TD < 2.0.Airspace of each lens of reasonable distribution on optical axis, it is ensured that processing and assembling characteristic, simultaneously Be conducive to slow down deflection of light, adjust the curvature of field of optical imaging lens group, reduces sensitivity, and then obtain preferably at image quality Amount.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: TTL/ImgH > 1.40, In, TTL is the object side of the first lens to distance of the imaging surface on optical axis of optical imaging lens group, and ImgH is optical imagery The half of effective pixel area diagonal line length on the imaging surface of lens group.More specifically, TTL and ImgH can further meet TTL/ ImgH > 1.43.Meet TTL/ImgH > 1.40, can not only effectively improve the imaging definition of the optical imaging lens group, but also Can be too long to avoid the optics overall length of the optical imaging lens group, be conducive to the optical imaging lens group according to the application portable Application on formula electronic equipment.

In the exemplary embodiment, can be met according to the optical imaging lens group of the application: 1.00 100 × T34/ of < ImgH < 3.00, wherein T34 is the spacing distance of the third lens and the 4th lens on optical axis, and ImgH is optical imaging lens The half of effective pixel area diagonal line length on the imaging surface of group.More specifically, T34 and ImgH can further meet 1.20 < 100 × T34/ImgH < 2.60.Meet 1.00 100 × T34/ImgH of < < 3.00, it can be while promoting imaging definition It effectively corrects the curvature of field of the optical imaging lens group and improves the ghost wind between last two panels and second, third lens Danger.

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

Present applicant proposes a kind of with extra small head, using aspherical optical imaging lens group.According to the application's Multi-disc eyeglass, such as described above five can be used in the optical imaging lens group of above embodiment.It is each by reasonable distribution Power of lens, face type, each lens center thickness and each lens between axis on spacing etc., can effectively converge incidence Light, the machinability for reducing the optics overall length of imaging lens group and improving imaging lens group, so that optical imaging lens group is more Be conducive to produce and process.There is extra small head according to the optical imaging lens group of the application, can greatly reduce camera lens front end Aperture is suitable for configuring under Mobile phone screen.

In presently filed embodiment, at least one of mirror surface of each lens is aspherical mirror, that is, the first lens At least one mirror surface into the image side surface of the 5th lens of object side be aspherical mirror.The characteristics of non-spherical lens, is: from To lens perimeter, curvature is consecutive variations for lens centre.With the spherical surface from lens centre to lens perimeter with constant curvature Lens are different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve the excellent of astigmatic image error Point.After non-spherical lens, the aberration occurred when imaging can be eliminated, as much as possible so as to improve image quality. Optionally, object side and the picture of the first lens, the second lens, the third lens, the 4th lens and each lens in the 5th lens At least one of side is aspherical mirror.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 are aspherical mirror.

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

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

Embodiment 1

Referring to Fig. 1 to Fig. 2 D description according to the optical imaging lens group of the embodiment of the present application 1.Fig. 1 shows basis The structural schematic diagram of the optical imaging lens group of the embodiment of the present application 1.

As shown in Figure 1, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are convex surface.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 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 basic parameter table of the optical imaging lens group of embodiment 1, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).

Table 1

In this example, total effective focal length f of optical imaging lens group is 1.82mm, the total length of optical imaging lens group TTL (that is, the distance of imaging surface S13 on optical axis from the object side S1 of the first lens E1 to optical imaging lens group) is The half ImgH of effective pixel area diagonal line length is 2.40mm, optics on 3.45mm, the imaging surface S13 of optical imaging lens group It is 2.50 that the maximum angle of half field-of view Semi-FOV of imaging lens group, which is 61.3 ° and f-number Fno,.

In embodiment 1, the object side of any one lens of the first lens E1 into the 5th lens E5 and image side surface are equal To be aspherical, 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 is circular cone coefficient；Ai It is the correction factor of aspherical i-th-th rank.The following table 2 gives the high order that can be used for each aspherical mirror S1-S10 in embodiment 1 Term coefficient A4, A6, A8, A10, A12, A14, A16, A18 and A20.

Table 2

Fig. 2A shows chromatic curve on the axis of the optical imaging lens group of embodiment 1, indicates the light of different wave length Deviate via the converging focal point after camera lens.Fig. 2 B shows the astigmatism curve of the optical imaging lens group of embodiment 1, indicates son Noon curvature of the image and sagittal image surface bending.Fig. 2 C shows the distortion curve of the optical imaging lens group of embodiment 1, indicates not The corresponding distortion sizes values with field angle.Fig. 2 D shows the ratio chromatism, curve of the optical imaging lens group of embodiment 1, table Show light via the deviation of the different image heights after camera lens on imaging surface.A to Fig. 2 D is it is found that given by embodiment 1 according to fig. 2 Optical imaging lens group can be realized good image quality.

Embodiment 2

Referring to Fig. 3 to Fig. 4 D description according to the optical imaging lens group of the embodiment of the present application 2.The present embodiment and with In lower 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 optical imaging lens group.

As shown in figure 3, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 convex surface.Second lens E2 has Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has 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 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.

In this example, total effective focal length f of optical imaging lens group is 1.71mm, the total length of optical imaging lens group TTL is 3.48mm, and the half ImgH of effective pixel area diagonal line length is on the imaging surface S13 of optical imaging lens group It is 2.50 that 2.20mm, the maximum angle of half field-of view Semi-FOV of optical imaging lens group, which are 58.9 ° and f-number Fno,.

Table 3 shows the basic parameter table of the optical imaging lens group of embodiment 2, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).Table 4 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, In, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 3

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.9889E-01

-4.7863E+01

2.4615E+03

-7.6021E+04

1.4468E+06

-1.7062E+07

1.2106E+08

-4.7200E+08

7.7472E+08

S2

-2.1511E-01

-2.9051E+00

-1.5320E+02

4.3802E+03

-5.5829E+04

3.9540E+05

-1.6011E+06

3.4722E+06

-3.1283E+06

S3

-1.4498E-01

-1.3678E+01

2.6184E+02

-3.4548E+03

2.8062E+04

-1.4174E+05

4.2967E+05

-7.1179E+05

4.9531E+05

S4

-1.1992E+00

1.3403E+00

-1.2839E-01

-1.9717E+01

1.4153E+02

-5.4153E+02

1.0912E+03

-1.0732E+03

4.1038E+02

S5

-5.4189E-01

-3.1751E+00

1.8252E+01

2.2945E+01

-4.0356E+02

1.3295E+03

-2.0957E+03

1.6554E+03

-5.2755E+02

S6

3.0654E-01

-6.7923E+00

3.6661E+01

-1.0564E+02

1.8819E+02

-2.1464E+02

1.5276E+02

-6.1823E+01

1.0918E+01

S7

-3.3115E-01

-4.6922E-01

3.2400E+00

-7.1361E+00

8.8256E+00

-6.6960E+00

3.0536E+00

-7.6365E-01

8.0332E-02

S8

-4.5540E-02

-4.4932E-01

1.1138E+00

-1.2710E+00

8.1430E-01

-3.1078E-01

7.0347E-02

-8.7362E-03

4.5903E-04

S9

-1.8310E-01

6.0459E-01

-1.3911E+00

1.4779E+00

-8.7025E-01

3.0648E-01

-6.4659E-02

7.5711E-03

-3.7944E-04

S10

3.6052E-01

-7.0476E-01

5.8241E-01

-2.6085E-01

5.2063E-02

3.8195E-03

-3.9874E-03

7.1268E-04

-4.2611E-05

Table 4

Fig. 4 A shows chromatic curve on the axis of the optical imaging lens group of embodiment 2, indicates the light of different wave length Deviate via the converging focal point after camera lens.Fig. 4 B shows the astigmatism curve of the optical imaging lens group of embodiment 2, indicates son Noon curvature of the image and sagittal image surface bending.Fig. 4 C shows the distortion curve of the optical imaging lens group of embodiment 2, indicates not The corresponding distortion sizes values with field angle.Fig. 4 D shows the ratio chromatism, curve of the optical imaging lens group of embodiment 2, table Show light via the deviation of the different image heights after camera lens on imaging surface.According to Fig. 4 A to Fig. 4 D it is found that given by embodiment 2 Optical imaging lens group can be realized good image quality.

Embodiment 3

The optical imaging lens group according to the embodiment of the present application 3 is described referring to Fig. 5 to Fig. 6 D.Fig. 5 shows root According to the structural schematic diagram of the optical imaging lens group of the embodiment of the present application 3.

As shown in figure 5, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are convex surface.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 convex 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.

In this example, total effective focal length f of optical imaging lens group is 2.13mm, the total length of optical imaging lens group TTL is 3.64mm, and the half ImgH of effective pixel area diagonal line length is on the imaging surface S13 of optical imaging lens group It is 2.30 that 2.40mm, the maximum angle of half field-of view Semi-FOV of optical imaging lens group, which are 53.6 ° and f-number Fno,.

Table 5 shows the basic parameter table of the optical imaging lens group of embodiment 3, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).Table 6 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, In, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 5

Table 6

Fig. 6 A shows chromatic curve on the axis of the optical imaging lens group of embodiment 3, indicates the light of different wave length Deviate via the converging focal point after camera lens.Fig. 6 B shows the astigmatism curve of the optical imaging lens group of embodiment 3, indicates son Noon curvature of the image and sagittal image surface bending.Fig. 6 C shows the distortion curve of the optical imaging lens group of embodiment 3, indicates not The corresponding distortion sizes values with field angle.Fig. 6 D shows the ratio chromatism, curve of the optical imaging lens group of embodiment 3, table Show light via the deviation of the different image heights after camera lens on imaging surface.According to Fig. 6 A to Fig. 6 D it is found that given by embodiment 3 Optical imaging lens group can be realized good image quality.

Embodiment 4

The optical imaging lens group according to the embodiment of the present application 4 is described referring to Fig. 7 to Fig. 8 D.Fig. 7 shows root According to the structural schematic diagram of the optical imaging lens group of the embodiment of the present application 4.

As shown in fig. 7, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 negative power, and object side S1 is concave surface, and image side surface S2 is convex surface.Second lens E2 has Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has 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 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.

In this example, total effective focal length f of optical imaging lens group is 1.80mm, the total length of optical imaging lens group TTL is 3.55mm, and the half ImgH of effective pixel area diagonal line length is on the imaging surface S13 of optical imaging lens group It is 2.10 that 1.85mm, the maximum angle of half field-of view Semi-FOV of optical imaging lens group, which are 53.3 ° and f-number Fno,.

Table 7 shows the basic parameter table of the optical imaging lens group of embodiment 4, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).Table 8 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, In, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 7

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-5.4839E-01

1.5054E+01

-4.9229E+02

9.4273E+03

-1.1166E+05

8.2990E+05

-3.7724E+06

9.5867E+06

-1.0427E+07

S2

7.7192E-02

-3.5620E+01

6.5718E+02

-6.9068E+03

4.4505E+04

-1.7863E+05

4.3512E+05

-5.8711E+05

3.3592E+05

S3

8.9764E-02

-1.1331E+01

1.2776E+02

-9.8712E+02

4.9972E+03

-1.6860E+04

3.6012E+04

-4.3158E+04

2.1873E+04

S4

-8.0080E-01

-2.8419E+00

3.5963E+01

-1.9221E+02

5.6326E+02

-9.6459E+02

9.5608E+02

-5.0131E+02

1.0514E+02

S5

-1.7487E-01

-6.8244E+00

6.2026E+01

-2.8471E+02

7.7038E+02

-1.2555E+03

1.2121E+03

-6.3940E+02

1.4214E+02

S6

2.8217E-02

-2.4449E+00

1.1914E+01

-2.8228E+01

3.8023E+01

-2.8908E+01

1.0534E+01

-5.1870E-01

-4.6989E-01

S7

-3.3329E-01

1.4558E-01

4.9739E-01

-1.1467E+00

1.2335E+00

-8.8705E-01

4.1589E-01

-1.0924E-01

1.1945E-02

S8

-7.5938E-03

-6.0336E-01

1.5629E+00

-1.9039E+00

1.2674E+00

-4.8916E-01

1.0945E-01

-1.3189E-02

6.6268E-04

S9

-2.0984E-02

-2.5398E-01

1.2557E-01

1.5455E-01

-2.0073E-01

9.7326E-02

-2.4172E-02

3.0447E-03

-1.5346E-04

S10

5.0559E-01

-1.4641E+00

2.1167E+00

-1.9412E+00

1.1554E+00

-4.3551E-01

9.8821E-02

-1.2221E-02

6.3013E-04

Table 8

Fig. 8 A shows chromatic curve on the axis of the optical imaging lens group of embodiment 4, indicates the light of different wave length Deviate via the converging focal point after camera lens.Fig. 8 B shows the astigmatism curve of the optical imaging lens group of embodiment 4, indicates son Noon curvature of the image and sagittal image surface bending.Fig. 8 C shows the distortion curve of the optical imaging lens group of embodiment 4, indicates not The corresponding distortion sizes values with field angle.Fig. 8 D shows the ratio chromatism, curve of the optical imaging lens group of embodiment 4, table Show light via the deviation of the different image heights after camera lens on imaging surface.According to Fig. 8 A to Fig. 8 D it is found that given by embodiment 4 Optical imaging lens group can be realized good image quality.

Embodiment 5

The optical imaging lens group according to the embodiment of the present application 5 is described referring to Fig. 9 to Figure 10 D.Fig. 9 shows root According to the structural schematic diagram of the optical imaging lens group of the embodiment of the present application 5.

As shown in figure 9, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 Positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is Concave surface, image side surface S6 are convex surface.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 convex 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.

In this example, total effective focal length f of optical imaging lens group is 2.06mm, the total length of optical imaging lens group TTL is 3.60mm, and the half ImgH of effective pixel area diagonal line length is on the imaging surface S13 of optical imaging lens group It is 2.37 that 2.40mm, the maximum angle of half field-of view Semi-FOV of optical imaging lens group, which are 55.4 ° and f-number Fno,.

Table 9 shows the basic parameter table of the optical imaging lens group of embodiment 5, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).Table 10 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, In, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 9

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-2.0587E-01

4.0327E+00

-1.4275E+02

2.6905E+03

-3.0983E+04

2.2109E+05

-9.5451E+05

2.2845E+06

-2.3284E+06

S2

-5.4475E-01

2.2266E-01

-7.9216E+00

-2.5248E+01

9.0714E+02

-7.4585E+03

3.0248E+04

-6.1177E+04

4.8662E+04

S3

-7.3912E-01

3.0662E+00

-7.9170E+01

9.0923E+02

-6.9425E+03

3.3647E+04

-1.0131E+05

1.7431E+05

-1.3083E+05

S4

-9.6613E-01

-1.8968E+00

1.7884E+01

-9.1969E+01

3.0257E+02

-5.8855E+02

5.9891E+02

-2.0803E+02

-5.1866E+01

S5

-1.8067E-01

-8.8801E+00

6.0162E+01

-2.0273E+02

4.3860E+02

-6.2674E+02

5.6613E+02

-2.8880E+02

6.1951E+01

S6

-2.7409E-01

3.5213E-01

-2.9714E+00

2.2958E+01

-7.2217E+01

1.2030E+02

-1.1394E+02

5.8380E+01

-1.2590E+01

S7

-8.7092E-01

2.1008E+00

-4.1429E+00

6.0742E+00

-6.5164E+00

4.8635E+00

-2.3588E+00

6.6212E-01

-8.0971E-02

S8

-1.7222E-01

2.2546E-01

-3.9617E-01

3.4509E-01

-1.4875E-01

2.8065E-02

3.8589E-04

-9.1151E-04

9.3855E-05

S9

-5.0465E-02

1.6581E-01

-5.2628E-01

5.7580E-01

-3.3163E-01

1.1332E-01

-2.3211E-02

2.6427E-03

-1.2896E-04

S10

2.6481E-01

-1.5361E-01

-7.2555E-02

1.4605E-01

-9.3637E-02

3.3204E-02

-6.8979E-03

7.8719E-04

-3.8162E-05

Table 10

Figure 10 A shows chromatic curve on the axis of the optical imaging lens group of embodiment 5, indicates the light of different wave length Deviate via the converging focal point after camera lens.Figure 10 B shows the astigmatism curve of the optical imaging lens group of embodiment 5, indicates Meridianal image surface bending and sagittal image surface bending.Figure 10 C shows the distortion curve of the optical imaging lens group of embodiment 5, table Show the corresponding distortion sizes values of different field angles.The ratio chromatism, that Figure 10 D shows the optical imaging lens group of embodiment 5 is bent Line indicates light via the deviation of the different image heights after camera lens on imaging surface.According to Figure 10 A to Figure 10 D it is found that implementing Optical imaging lens group given by example 5 can be realized good image quality.

Embodiment 6

The optical imaging lens group according to the embodiment of the present application 6 is described referring to Figure 11 to Figure 12 D.Figure 11 is shown According to the structural schematic diagram of the optical imaging lens group of the embodiment of the present application 6.

As shown in figure 11, optical imaging lens group by object side to image side sequentially include: aperture diaphragm STO, the first lens E1, Field stop ST, 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 convex surface.Second lens E2 has Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, 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.

In this example, total effective focal length f of optical imaging lens group is 2.03mm, the total length of optical imaging lens group TTL is 3.61mm, and the half ImgH of effective pixel area diagonal line length is on the imaging surface S13 of optical imaging lens group It is 2.20 that 2.40mm, the maximum angle of half field-of view Semi-FOV of optical imaging lens group, which are 55.5 ° and f-number Fno,.

Table 11 shows the basic parameter table of the optical imaging lens group of embodiment 6, wherein radius of curvature, thickness/distance Unit with focal length is millimeter (mm).Table 12 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, In, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 11

Face number

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

-7.3250E-02

-2.8336E+00

7.0323E+01

-1.2694E+03

1.4681E+04

-1.0591E+05

4.5706E+05

-1.0760E+06

1.0607E+06

S2

-1.5122E-01

-1.2191E+01

2.1432E+02

-2.2757E+03

1.4788E+04

-5.9815E+04

1.4705E+05

-2.0119E+05

1.1753E+05

S3

-5.3983E-01

1.8204E+00

-2.6316E+01

1.3561E+02

-3.1857E+02

-2.8670E+02

3.1522E+03

-5.8801E+03

3.4998E+03

S4

-7.5409E-01

-9.5779E-01

9.3384E+00

-3.8985E+01

7.8354E+01

-4.7384E+01

-7.8704E+01

1.4784E+02

-7.2385E+01

S5

-7.7777E-02

-6.8122E+00

5.2126E+01

-2.1920E+02

5.7617E+02

-9.4463E+02

9.3755E+02

-5.1581E+02

1.2070E+02

S6

-1.8191E-01

-5.1525E-01

3.4183E+00

-6.8281E+00

5.6408E+00

9.4000E-01

-5.8754E+00

4.4807E+00

-1.1402E+00

S7

-3.6313E-01

5.0724E-01

-8.8750E-01

1.2252E+00

-1.2481E+00

8.3757E-01

-3.5020E-01

8.2676E-02

-8.3246E-03

S8

-1.1359E-01

-8.5501E-02

2.5251E-01

-3.4343E-01

2.5866E-01

-1.1152E-01

2.7454E-02

-3.5783E-03

1.9021E-04

S9

-1.0406E-02

-1.0040E-01

-1.3581E-01

2.5997E-01

-1.6925E-01

5.8979E-02

-1.1751E-02

1.2616E-03

-5.6533E-05

S10

3.7206E-01

-7.6544E-01

7.3863E-01

-4.4124E-01

1.7276E-01

-4.4514E-02

7.2531E-03

-6.7455E-04

2.7162E-05

Table 12

Figure 12 A shows chromatic curve on the axis of the optical imaging lens group of embodiment 6, indicates the light of different wave length Deviate via the converging focal point after camera lens.Figure 12 B shows the astigmatism curve of the optical imaging lens group of embodiment 6, indicates Meridianal image surface bending and sagittal image surface bending.Figure 12 C shows the distortion curve of the optical imaging lens group of embodiment 6, table Show the corresponding distortion sizes values of different field angles.The ratio chromatism, that Figure 12 D shows the optical imaging lens group of embodiment 6 is bent Line indicates light via the deviation of the different image heights after camera lens on imaging surface.According to Figure 12 A to Figure 12 D it is found that implementing Optical imaging lens group given by example 6 can be realized good image quality.

To sum up, embodiment 1 to embodiment 6 meets relationship shown in table 13 respectively.

Conditional/embodiment	1	2	3	4	5	6
							TTL/f×ImgH(mm)	4.54	4.47	4.11	3.65	4.20	4.27
Semi-FOV(°)	61.3	58.9	53.6	53.3	55.4	55.5
							f5/f	0.85	2.01	1.16	0.94	1.24	0.86
f/R9	2.80	2.73	1.58	2.85	1.47	3.47
							(R4+R5)/(R4-R5)	2.74	2.81	2.03	3.12	2.05	2.21
CT4/T45	8.65	4.81	4.98	6.31	4.19	10.01
							(SAG31+SAG32)/(SAG31-SAG32)	14.95	19.52	30.14	12.29	24.42	21.11
CT2/T23	3.95	3.78	2.80	5.54	2.89	3.69
							∑AT/TD	0.13	0.14	0.19	0.12	0.19	0.16
100×T34/TmgH	1.25	1.36	1.25	2.56	1.25	1.25

Table 13

The application also provides a kind of imaging device, is provided with electronics photosensitive element to be imaged, electronics photosensitive element can To be photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor element (CMOS).Imaging device can be such as digital The independent imaging equipment of camera, is also possible to the image-forming module being integrated on the mobile electronic devices such as mobile phone.Imaging dress It sets and is equipped with optical imaging lens group described above.

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

Claims (10)

1. optical imaging lens group, which is characterized in that sequentially include: by object side to image side along optical axis

Diaphragm；

The first lens with focal power；

The second lens with focal power, image side surface are convex surface；

The third lens with focal power, object side are concave surface, and image side surface is convex surface；

The 4th lens with focal power, object side are convex surface, and image side surface is concave surface, and the object side of the 4th lens There is the point of inflexion at least one of image side surface；

The 5th lens with positive light coke, and the image side surface of the 5th lens has the point of inflexion；

Wherein, the object side of first lens to the optical imaging lens group distance of the imaging surface on the optical axis The half of TTL, total effective focal length f of the optical imaging lens group and effective pixel area diagonal line length on the imaging surface ImgH meets: 3.50mm < ImgH/f × TTL < 5.00mm.

2. optical imaging lens group according to claim 1, which is characterized in that the optical imaging lens group maximum half Field angle Semi-FOV meets: 53.0 ° of Semi-FOV >.

3. optical imaging lens group according to claim 1, which is characterized in that the optical imaging lens group it is total effectively The effective focal length f5 of focal length f and the 5th lens meets: 0.50 < f5/f < 2.50.

4. optical imaging lens group according to claim 1, which is characterized in that the optical imaging lens group it is total effectively The radius of curvature R 9 of the object side of focal length f and the 5th lens meets: 1.00 < f/R9 < 3.50.

5. optical imaging lens group according to claim 1, which is characterized in that the curvature of the image side surface of second lens The radius of curvature R 5 of the object side of radius R4 and the third lens meets: 2.00 < (R4+R5)/(R4-R5) < 3.50.

6. optical imaging lens group according to claim 1, which is characterized in that the 4th lens are on the optical axis The spacing distance T45 of center thickness CT4 and the 4th lens and the 5th lens on the optical axis meets: 4.00 < CT4/T45 < 10.50.

7. optical imaging lens group according to claim 1, which is characterized in that the object side of the third lens and described Distance SAG31 and the third lens on the intersection point of optical axis to the axis on the effective radius vertex of the object side of the third lens Distance SAG32 is full on the intersection point of image side surface and the optical axis to the axis on the effective radius vertex of the image side surface of the third lens Foot: 12.00 < (SAG31+SAG32)/(SAG31-SAG32) < 30.50.

8. optical imaging lens group according to claim 1, which is characterized in that second lens are on the optical axis The spacing distance T23 of center thickness CT2 and second lens and the third lens on the optical axis meets: 2.50 < CT2/T23 < 6.00.

9. optical imaging lens group according to claim 1, which is characterized in that the third lens and the 4th lens The half ImgH of effective pixel area diagonal line length meets on the spacing distance T34 and the imaging surface on the optical axis: 1.00 100 × T34/ImgH of < < 3.00.

10. optical imaging lens group, which is characterized in that sequentially include: by object side to image side along optical axis

Diaphragm；

The first lens with focal power；

The second lens with focal power, image side surface are convex surface；

The third lens with focal power, object side are concave surface, and image side surface is convex surface；

The 4th lens with focal power, object side are convex surface, and image side surface is concave surface, and the object side of the 4th lens There is the point of inflexion at least one of image side surface；

The 5th lens with positive light coke, and the image side surface of the 5th lens has the point of inflexion；

The maximum angle of half field-of view Semi-FOV of the optical imaging lens group meets: 53.0 ° of Semi-FOV >.