CN110412723A

CN110412723A - Optical lens

Info

Publication number: CN110412723A
Application number: CN201810399597.XA
Authority: CN
Inventors: 姚波; 李慧敏; 王东方
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2019-11-05
Anticipated expiration: 2038-04-28
Also published as: CN110412723B

Abstract

This application discloses a kind of optical lens, the optical lens along optical axis by object side to image side sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, the first lens can have positive light coke, and object side is convex surface, and image side surface is concave surface；Second lens can have negative power, and object side is concave surface, and image side surface is convex surface；The third lens can have positive light coke, and object side is concave surface, and image side surface is convex surface；4th lens can have positive light coke, and object side and image side surface are convex surface；5th lens can have positive light coke, and object side is convex surface, and image side surface is concave surface；And the 6th lens can have a negative power, object side is convex surface, and image side surface is concave surface.According to the optical lens of the application, it can be achieved that at least one beneficial effect in miniaturization, high pixel, large aperture etc..

Description

Optical lens

Technical field

This application involves a kind of optical lens, more specifically, this application involves a kind of optical lens including six-element lens.

Background technique

The advanced DAS (Driver Assistant System) market (Advanced Driver Assistance Systems, ADAS) increases in recent years Long rapid, for on-vehicle lens as its important component, performance requirements is stringenter, this is mainly reflected in following two side Face:

1) pixel request of camera is higher and higher, and the size of chip also increases with it, cause the size of entire camera lens also with Increase, application conditional for certain installation sites, such as vehicle-mounted front view lens, since it is desired that being mounted on the interior of windshield There is risk of interferences in side to windshield, needs to reach using special lens design the requirement of small size.Such existing camera lens Length generally in 45mm or so, it is not dominant from the perspective of miniaturization

2) under the use of particular surroundings, such as the requirement of on-vehicle lens night use effect, it needs by increasing camera lens Clear aperture promotes night effect

Summary of the invention

This application provides be applicable to vehicle-mounted installation, can at least overcome or part overcome it is in the prior art it is above-mentioned extremely The optical lens of a few defect.

The one aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to image side Sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, first thoroughly Mirror can have positive light coke, and object side is convex surface, and image side surface is concave surface；Second lens can have negative power, object side For concave surface, image side surface is convex surface；The third lens can have positive light coke, and object side is concave surface, and image side surface is convex surface；4th thoroughly Mirror can have positive light coke, and object side and image side surface are convex surface；5th lens can have positive light coke, and object side is convex Face, image side surface are concave surface；And the 6th lens can have a negative power, object side is convex surface, and image side surface is concave surface.

In one embodiment, at least one of the first lens, the third lens and the 4th lens can be aspherical Eyeglass.

In one embodiment, optical lens may also include the diaphragm before the first lens are arranged in.

In one embodiment, optical lens is six separate type frameworks, does not include glued part.

In one embodiment, the center of the object side of the first lens to optical lens imaging surface on optical axis away from It can meet between TTL and the whole group focal length value F of optical lens: TTL/F≤2.5.

In one embodiment, can meet between the focal length value f2 of the second lens and the focal length value f6 of the 6th lens: 0.7 ≤f2/f6≤1.7。

In one embodiment, can meet between the focal length value f3 of the third lens and the focal length value f5 of the 5th lens: 1.2 ≤f3/f5≤2.2。

In one embodiment, the combined focal length value f23 and the 5th lens of the second lens and the third lens and the 6th thoroughly It can meet between the combined focal length value f56 of mirror: 0.1≤| f23/f56 |≤1.5.

In one embodiment, conditional can be met: D/h/FOV≤0.055, wherein FOV is the maximum of optical lens Field angle；D is the maximum clear aperture of the first lens object side corresponding to the maximum field of view angle of optical lens；And h is light Learn image height corresponding to the maximum field of view angle of camera lens.

The another aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to image side Sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, first thoroughly Mirror, the third lens, the 4th lens and the 5th lens all have positive light coke；Second lens and the 6th lens all have negative light focus Degree；And second the combined focal lengths of lens and the third lens be negative value, the combined focal length of the 5th lens and the 6th lens is positive value, Wherein, the center of the object side of the first lens to optical lens distance TTL and optical lens of the imaging surface on optical axis it is whole It can meet between group focal length value F: TTL/F≤2.5.

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

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

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

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

In one embodiment, the object side of the 5th lens can be convex surface, and image side surface can be concave surface.

In one embodiment, the object side of the 6th lens can be convex surface, and image side surface can be concave surface.

The another aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to image side Sequentially can include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, first thoroughly Mirror, the third lens, the 4th lens and the 5th lens all have positive light coke；Second lens and the 6th lens all have negative light focus Degree；And at least one of first lens, the third lens and the 4th lens are aspherical lens, wherein the second lens and the It can meet between the combined focal length value f23 and the 5th lens and the combined focal length value f56 of the 6th lens of three lens: 0.1≤| f23/ f56|≤1.5。

The application uses such as six-element lens, by the shape of optimal setting eyeglass, the light focus of each eyeglass of reasonable distribution Degree etc., realizes at least one in the beneficial effects such as high pixel, miniaturization, large aperture, the image planes of optical lens are bright, night vision effect is good It is a.

Detailed description of the invention

In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent Point will be apparent.In the accompanying drawings:

Fig. 1 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 1；

Fig. 2 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 2；

Fig. 3 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 3；

Fig. 4 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 4；And

Fig. 5 is the structural schematic diagram for showing the optical lens according to the embodiment of the present application 5；

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.Surface in each lens near object is known as object side, Surface in each lens near imaging surface is known as image side 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 lens according to the application illustrative embodiments includes such as six lens with focal power, i.e., and first Lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.This six lens along optical axis from object side to Image side sequential.

It can also further comprise the photosensitive member for being set to imaging surface according to the optical lens of the application illustrative embodiments Part.Optionally, the photosensitive element for being set to imaging surface can be photosensitive coupling element (CCD) or Complimentary Metal-Oxide semiconductor Element (CMOS).

First lens can have a positive light coke, and it can be concave surface that object side, which can be convex surface, image side surface,.First lens are set as The meniscus shape for being convex to object side can collect light as much as possible, and light is made to enter rear optical system.In practical applications, it examines Consider on-vehicle lens outdoor mounted use environment, can be set in bad weathers, such meniscus shapes for being convex to object side such as sleet Meter is more applicable in the environment such as sleet, is conducive to the landing of water droplet, reduces the influence to imaging.

Second lens can have negative power, and object side can be concave surface, and image side surface can be convex surface.Second lens can dissipate Light makes light be able to enter rear optical system, reaches image planes.

The third lens can have positive light coke, and object side can be concave surface, and image side surface can be convex surface.The third lens can be into Light rearward optical system transition is made it reach image planes by one step.

4th lens can have positive light coke, and object side and image side surface can be convex surface.4th lens can gentle transition Light is conducive to reduce camera lens rear end bore to rear optical system.

5th lens can have positive light coke, and object side can be convex surface, and image side surface can be concave surface.5th lens can converge Caustic further decreases camera lens rear end bore, shortens system overall length.

6th lens can have negative power, and object side can be convex surface, and image side surface can be concave surface.6th lens can be fast Speed shrinks front light, further decreases system overall length.

First lens can be regarded as the first lens group for overall architecture by the optical lens of above-mentioned arrangement, and second Lens and the third lens constitute the second lens group, and the 4th lens regard as the third lens group and the 5th lens and the 6th thoroughly Mirror constitutes the 4th lens group, wherein the 4th lens group is symmetrical about the third lens group with the second lens group, such to be provided with Conducive to color difference is eliminated, imaging effect is improved.

In the exemplary embodiment, the diaphragm for limiting light beam can be set between such as object side and the first lens, To further increase the image quality of camera lens.It, can effective pinch system when diaphragm to be set between object side and the first lens Front end bore.

In the exemplary embodiment, between the optics total length TTL of optical lens and the whole group focal length value F of optical lens It can meet: TTL/F≤2.5, it is more desirable that TTL and F can further meet TTL/F≤2.3.Meet conditional TTL/F≤2.5, The small size performance of camera lens can be achieved.

In the exemplary embodiment, can meet between the focal length value f2 of the second lens and the focal length value f6 of the 6th lens: 0.7≤f2/f6≤1.7, it is more desirable that can further meet 0.9≤f2/f6≤1.5.

In the exemplary embodiment, can meet between the focal length value f3 of the third lens and the focal length value f5 of the 5th lens: 1.2≤f3/f5≤2.2, it is more desirable that can further meet 1.5≤f3/f5≤1.9.

In the exemplary embodiment, the combined focal length value f23 and the 5th lens and the 6th of the second lens and the third lens It can meet between the combined focal length value f56 of lens: 0.1≤| f23/f56 |≤1.5, it is more desirable that can further meet 0.3≤| f23/f56|≤1.3。

In the exemplary embodiment, the maximum field of view angle FOV of optical lens, corresponding to optical lens maximum field of view angle It can meet between image height h corresponding to the maximum clear aperture D of first lens object side and optical lens maximum field of view angle: D/ H/FOV≤0.055, it is more desirable that D, h and FOV can further meet D/h/FOV≤0.05.Meet conditional D/h/FOV≤ 0.055, it is ensured that the front end of camera lens is small-bore.

In the exemplary embodiment, eyeglass used by optical lens can be the eyeglass of plastic material, can also be The eyeglass of glass material.Since the eyeglass thermal expansion coefficient of plastic material is larger, the variation of ambient temperature used in the camera lens compared with When big, the lens of plastic material can affect greatly the overall performance of camera lens.And the eyeglass of glass material is used, it can reduce Influence of the temperature to lens performance.Glass lens can be used in first lens of optical lens according to the present invention, to reduce environment Influence to system entirety, the overall performance of improving optical camera lens.It is desirable that glass lens can be used in the first lens.

In the exemplary embodiment, at least one of the first lens, the third lens and the 4th lens are aspherical mirror Piece.The characteristics of aspherical lens, is: being consecutive variations from center of lens to periphery curvature.And have perseverance from center of lens to periphery The spheric glass for determining curvature is different, and aspherical lens have more preferably radius of curvature characteristic, has to improve and distorts aberration and improvement The advantages of astigmatic image error.After aspherical lens, the aberration occurred when imaging can be eliminated as much as possible, to mention Rise the image quality of camera lens.First lens ideally use aspherical lens, can be conducive to improve solution image quality amount.The third lens reason It uses aspherical lens with thinking, is conducive to shortening system overall length, while improving solution image quality amount.4th lens ideally use aspheric The solution image quality amount of all band (visible light+infrared) can be improved in face eyeglass.

Multi-disc eyeglass, such as described above six can be used according to the optical lens of the above embodiment of the application. Guarantee the optics such as miniaturization, large aperture, high pixel by each power of lens of the above-mentioned optical lens of optimal setting, face type etc. Characteristic, to be adapted to the application (e.g., on-vehicle lens) of installation limitation.

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 camera lens can be changed, to obtain each result and advantage described in this specification.Although for example, It is described by taking six lens as an example in embodiment, but the optical lens is not limited to include six lens.If desired, The optical lens may also include the lens of other quantity.

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

Embodiment 1

Referring to Fig. 1 description according to the optical lens of the embodiment of the present application 1.Fig. 1 is shown according to the embodiment of the present application 1 Optical lens structural schematic diagram.

As shown in Figure 1, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.

First lens L1 is the meniscus lens with positive light coke, and object side S2 is convex surface, and image side surface S3 is concave surface.

Second lens L2 is the meniscus lens with negative power, and object side S4 is concave surface, and image side surface S5 is convex surface.

The third lens L3 is the meniscus lens with positive light coke, and object side S6 is concave surface, and image side surface S7 is convex surface.

4th lens L4 is the biconvex lens with positive light coke, and object side S8 and image side surface S9 are convex surface.In addition, 4th lens L4 is aspherical lens, and object side S8 and image side surface S9 are aspherical.

5th lens L5 is the meniscus lens with positive light coke, and object side S10 is convex surface, and image side surface S11 is concave surface.

6th lens L6 is the meniscus lens with negative power, and object side S12 is convex surface, and image side surface S13 is concave surface.

Optionally, which may also include optical filter L7 and/or protection with object side S14 and image side surface S15 Lens L7 '.Optical filter L7 can be used for correcting color error ratio.Protection lens L7 ' can be used for that the image positioned at imaging surface IMA is protected to pass Sense chip.Light from object sequentially passes through each surface S1 to S15 and is ultimately imaged on imaging surface IMA.

In the optical lens of the present embodiment, diaphragm STO can be set between object side and the first lens L1 to improve imaging Quality.

Table 1 shows radius of curvature R, thickness T, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 1 Number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).

Table 1

Face number	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					STO	It is infinite	0.0000
2	14.9236	2.9012	1.62	48.41
					3	33.3293	5.5902
4	-12.9481	1.9936	1.75	46.57
					5	-42.7669	1.1255
6	-28.0427	4.8265	1.62	63.41
					7	-13.8025	0.2000
8	22.8349	3.2029	1.62	55.00
					9	-82.8760	0.2000
10	11.4903	3.3082	1.76	43.20
					11	29.3002	0.0991
12	11.9696	2.5537	1.84	37.05
					13	6.1614	3.0000
14	It is infinite	1.2500	1.52	64.21
					15	It is infinite	3.4154
IMA	It is infinite

The present embodiment uses six-element lens as an example, by each power of lens of reasonable distribution and face type, respectively Airspace between the center thickness of lens and each lens can make camera lens have miniaturization, large aperture, high pixel etc. beneficial to effect At least one of fruit.Each aspherical face type Z is limited by following formula:

Wherein, Z 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 conic；A, B, C, D, E are high-order coefficient.The following table 2 show the aspherical lens surface S8 that can be used in embodiment 1 and The circular cone coefficient k and high-order coefficient A, B, C, D and E of S9.

Table 2

The following table 3 gives the object side S1's of the first lens L1 corresponding to the optical lens maximum field of view angle of embodiment 1 Maximum field of view angle FOV, the optical frames of image height h corresponding to maximum clear aperture D, optical lens maximum field of view angle, optical lens Optics total length TTL (that is, from distance on the center to the axis of imaging surface S16 of the object side S1 of the first lens L1), the optics of head The focal length of the whole group focal length value F of camera lens, the focal length value f2 of the second lens L2, the focal length value f3 of the third lens L3, the 5th lens L5 The combined focal length value f23 and the 5th lens L5 of value f5, the focal length value f6 of the 6th lens L6, the second lens L2 and the third lens L3 With the combined focal length value f56 of the 6th lens L6.

Table 3

D(mm)	12.937	f3(mm)	39.445
				h(mm)	9.516	f5(mm)	23.438
FOV(°)	33	f6(mm)	-19.230
				TTL(mm)	33.666	f23(mm)	-180.037
F(mm)	15.525	f56(mm)	189.560
				f2(mm)	-25.757

In the present embodiment, the maximum field of view angle FOV of optical lens, first corresponding to optical lens maximum field of view angle Meet D/ between image height h corresponding to the maximum clear aperture D of the object side S1 of lens L1 and optical lens maximum field of view angle H/FOV=0.041；Meet TTL/F=between the optics total length TTL of optical lens and the whole group focal length value F of optical lens 2.169；Meet f2/f6=1.339 between the focal length value f6 of the focal length value f2 and the 6th lens L6 of second lens L2；The third lens Meet f3/f5=1.683 between the focal length value f5 of the focal length value f3 and the 5th lens L5 of L3；And second lens L2 and third it is saturating Meet between the combined focal length value f23 and the 5th lens L5 and the combined focal length value f56 of the 6th lens L6 of mirror L3 | f23/f56 |= 0.950。

Embodiment 2

The optical lens according to the embodiment of the present application 2 is described referring to Fig. 2.In the present embodiment and following embodiment In, for brevity, by clipped description similar to Example 1.Fig. 2 shows the optics according to the embodiment of the present application 2 The structural schematic diagram of camera lens.

As shown in Fig. 2, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.

The third lens L3 is the meniscus lens with positive light coke, and object side S6 is concave surface, and image side surface S7 is convex surface.Separately Outside, the third lens L3 is aspherical lens, and object side S6 and image side surface S7 are aspherical.

The following table 4 show the radius of curvature R of each lens of the optical lens of embodiment 2, thickness T, refractive index Nd and Ah Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 5, which is shown, can be used for aspheric in embodiment 2 The circular cone coefficient k and high-order coefficient A, B, C, D and E of face lens surface S6, S7, S8 and S9.The following table 6 gives embodiment 2 Optical lens maximum field of view angle corresponding to the first lens L1 the maximum clear aperture D of object side S1, optical lens it is maximum The maximum field of view angle FOV of image height h, optical lens corresponding to field angle, optical lens optics total length TTL (that is, from first Distance on the center to the axis of imaging surface S16 of the object side S1 of lens L1), the whole group focal length value F of optical lens, the second lens L2 Focal length value f2, the focal length value f3 of the third lens L3, the focal length value f5 of the 5th lens L5, the focal length value f6 of the 6th lens L6, The combined focal length value f56 of the combined focal length value f23 and the 5th lens L5 and the 6th lens L6 of two lens L2 and the third lens L3.

Table 4

Face number	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					STO	It is infinite	0.0000
2	13.0716	2.8879	1.60	63.40
					3	28.7970	4.6518
4	-12.3533	1.9738	1.84	46.60
					5	-41.6473	1.7256
6	-17.6440	2.6846	1.62	48.50
					7	-10.8093	0.2000
8	20.2975	2.9688	1.62	47.90
					9	-178.0090	0.2000
10	11.1117	2.9840	1.77	49.60
					11	26.0683	0.1000
12	12.2335	2.5896	1.80	27.10
					13	6.4418	3.0000
14	It is infinite	1.2500	1.52	64.20
					15	It is infinite	3.9360
IMA	It is infinite

Table 5

Face number

K

A

B

C

D

E

6

-1.6293

7.4113E-06

-2.3104E-07

-8.9575E-09

-4.4986E-11

-9.1220E-14

7

-0.0264

3.0313E-05

-1.5158E-07

1.9160E-09

-3.1190E-11

-9.2218E-13

8

-2.5095

-3.1891E-05

8.9334E-08

-4.4938E-09

1.8040E-10

4.0898E-13

9

-300.0000

2.5677E-05

-3.5221E-07

1.3644E-08

-1.3256E-10

3.1343E-12

Table 6

In the present embodiment, the maximum field of view angle FOV of optical lens, first corresponding to optical lens maximum field of view angle Meet D/ between image height h corresponding to the maximum clear aperture D of the object side S1 of lens L1 and optical lens maximum field of view angle H/FOV=0.042；Meet TTL/F=between the optics total length TTL of optical lens and the whole group focal length value F of optical lens 1.959；Meet f2/f6=1.010 between the focal length value f6 of the focal length value f2 and the 6th lens L6 of second lens L2；The third lens Meet f3/f5=1.703 between the focal length value f5 of the focal length value f3 and the 5th lens L5 of L3；And second lens L2 and third it is saturating Meet between the combined focal length value f23 and the 5th lens L5 and the combined focal length value f56 of the 6th lens L6 of mirror L3 | f23/f56 |= 0.773。

Embodiment 3

The optical lens according to the embodiment of the present application 3 is described referring to Fig. 3.In the present embodiment and following embodiment In, for brevity, by clipped description similar to Example 1.Fig. 3 shows the optics according to the embodiment of the present application 3 The structural schematic diagram of camera lens.

As shown in figure 3, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.

The following table 7 show the radius of curvature R of each lens of the optical lens of embodiment 3, thickness T, refractive index Nd and Ah Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 8, which is shown, can be used for aspheric in embodiment 3 The circular cone coefficient k and high-order coefficient A, B, C, D and E of face lens surface S8 and S9.The following table 9 gives the optics of embodiment 3 The maximum clear aperture D of the object side S1 of first lens L1 corresponding to camera lens maximum field of view angle, optical lens maximum field of view angle The maximum field of view angle FOV of corresponding image height h, optical lens, optical lens optics total length TTL (that is, from the first lens L1 Object side S1 center to the axis of imaging surface S16 on distance), the focal length of the whole group focal length value F of optical lens, the second lens L2 Focal length value f6, the second lens of value f2, the focal length value f3 of the third lens L3, the focal length value f5 of the 5th lens L5, the 6th lens L6 The combined focal length value f56 of the combined focal length value f23 and the 5th lens L5 and the 6th lens L6 of L2 and the third lens L3.

Table 7

Table 8

Face number

K

A

B

C

D

E

8

-2.7339

-2.2736E-05

2.8632E-07

-3.0982E-09

6.1211E-11

4.8278E-13

9

-34.9349

1.5305E-05

2.3678E-08

8.7351E-09

-1.1394E-10

1.7649E-12

Table 9

D(mm)	13.320	f3(mm)	39.598
				h(mm)	9.558	f5(mm)	23.421
FOV(°)	33	f6(mm)	-20.785
				TTL(mm)	33.393	f23(mm)	-103.858
F(mm)	15.996	f56(mm)	115.995
				f2(mm)	-23.250

In the present embodiment, the maximum field of view angle FOV of optical lens, first corresponding to optical lens maximum field of view angle Meet D/ between image height h corresponding to the maximum clear aperture D of the object side S1 of lens L1 and optical lens maximum field of view angle H/FOV=0.042；Meet TTL/F=between the optics total length TTL of optical lens and the whole group focal length value F of optical lens 2.088；Meet f2/f6=1.119 between the focal length value f6 of the focal length value f2 and the 6th lens L6 of second lens L2；The third lens Meet f3/f5=1.691 between the focal length value f5 of the focal length value f3 and the 5th lens L5 of L3；And second lens L2 and third it is saturating Meet between the combined focal length value f23 and the 5th lens L5 and the combined focal length value f56 of the 6th lens L6 of mirror L3 | f23/f56 |= 0.895。

Embodiment 4

The optical lens according to the embodiment of the present application 4 is described referring to Fig. 4.In the present embodiment and following embodiment In, for brevity, by clipped description similar to Example 1.Fig. 4 shows the optics according to the embodiment of the present application 4 The structural schematic diagram of camera lens.

As shown in figure 4, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.

Second lens L2 is the meniscus lens with negative power, and object side S4 is concave surface, and image side surface S5 is convex surface.Separately Outside, the second lens L2 is aspherical lens, and object side S4 and image side surface S5 are aspherical.

The following table 10 show the radius of curvature R of each lens of the optical lens of embodiment 4, thickness T, refractive index Nd and Ah Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 11 show can be used for it is non-in embodiment 4 The circular cone coefficient k and high-order coefficient A, B, C, D and E of spherical lens surfaces S4, S5, S8 and S9.The following table 12 gives implementation The maximum clear aperture D of the object side S1 of first lens L1 corresponding to the optical lens maximum field of view angle of example 4, optical lens are most Image height h corresponding to big field angle, the maximum field of view angle FOV of optical lens, optical lens optics total length TTL (that is, from the Distance on the center to the axis of imaging surface S16 of the object side S1 of one lens L1), whole group focal length value F, the second lens of optical lens The focal length value f2 of L2, the focal length value f3 of the third lens L3, the focal length value f5 of the 5th lens L5, the 6th lens L6 focal length value f6, The combined focal length value of the combined focal length value f23 and the 5th lens L5 and the 6th lens L6 of second lens L2 and the third lens L3 f56。

Table 10

Face number	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					STO	It is infinite	0.0000
2	14.8280	2.9327	1.61	63.40
					3	32.8918	5.7416
4	-11.5785	1.9939	1.90	46.60
					5	-30.9085	1.3536
6	-27.2970	4.5516	1.62	58.00
					7	-13.6155	0.2000
8	23.7871	3.2140	1.61	66.40
					9	-72.8860	0.2000
10	11.4738	3.3188	1.77	43.60
					11	29.0588	0.0911
12	12.1345	2.5588	1.86	27.10
					13	6.2071	3.0000
14	It is infinite	1.2500	1.52	64.20
					15	It is infinite	4.0583
IMA	It is infinite

Table 11

Face number

K

A

B

C

D

E

4

0.0319

1.4205E-06

4.9482E-08

9.2888E-11

7.8308E-12

1.1527E-12

5

-3.3736

-1.3086E-06

-5.3453E-08

2.0403E-10

3.0965E-11

1.4143E-12

8

-0.0028

-2.8407E-05

2.1333E-07

-3.1780E-09

3.3686E-11

4.8333E-13

9

-1.0817

4.0677E-06

-3.3221E-08

6.6089E-09

-1.0038E-10

1.3483E-12

Table 12

D(mm)	14.010	f3(mm)	39.545
				h(mm)	9.726	f5(mm)	23.067
FOV(°)	33	f6(mm)	-18.700
				TTL(mm)	34.465	f23(mm)	-92.000
F(mm)	16.811	f56(mm)	201.297
				f2(mm)	-21.965

In the present embodiment, the maximum field of view angle FOV of optical lens, first corresponding to optical lens maximum field of view angle Meet D/ between image height h corresponding to the maximum clear aperture D of the object side S1 of lens L1 and optical lens maximum field of view angle H/FOV=0.044；Meet TTL/F=between the optics total length TTL of optical lens and the whole group focal length value F of optical lens 2.050；Meet f2/f6=1.175 between the focal length value f6 of the focal length value f2 and the 6th lens L6 of second lens L2；The third lens Meet f3/f5=1.714 between the focal length value f5 of the focal length value f3 and the 5th lens L5 of L3；And second lens L2 and third it is saturating Meet between the combined focal length value f23 and the 5th lens L5 and the combined focal length value f56 of the 6th lens L6 of mirror L3 | f23/f56 |= 0.457。

Embodiment 5

The optical lens according to the embodiment of the present application 5 is described referring to Fig. 5.In the present embodiment and following embodiment In, for brevity, by clipped description similar to Example 1.Fig. 5 shows the optics according to the embodiment of the present application 5 The structural schematic diagram of camera lens.

As shown in figure 5, optical lens is along optical axis from object side to sequentially including the first lens L1, the second lens at image side L2, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th lens L6.

First lens L1 is the meniscus lens with positive light coke, and object side S2 is convex surface, and image side surface S3 is concave surface.Separately Outside, the first lens L1 is aspherical lens, and object side S2 and image side surface S3 are aspherical.

The following table 13 show the radius of curvature R of each lens of the optical lens of embodiment 5, thickness T, refractive index Nd and Ah Shellfish number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 14 show can be used for it is non-in embodiment 5 The circular cone coefficient k and high-order coefficient A, B, C, D and E of spherical lens surfaces S2, S3, S6-S9.The following table 15 gives embodiment Maximum clear aperture D, the optical lens of the object side S1 of first lens L1 corresponding to 5 optical lens maximum field of view angle is maximum The maximum field of view angle FOV of image height h, optical lens corresponding to field angle, optical lens optics total length TTL (that is, from first Distance on the center to the axis of imaging surface S16 of the object side S1 of lens L1), the whole group focal length value F of optical lens, the second lens L2 Focal length value f2, the focal length value f3 of the third lens L3, the focal length value f5 of the 5th lens L5, the focal length value f6 of the 6th lens L6, The combined focal length value f56 of the combined focal length value f23 and the 5th lens L5 and the 6th lens L6 of two lens L2 and the third lens L3.

Table 13

Table 14

Face number

K

A

B

C

D

E

2

1.0854

3.6979E-06

1.9434E-07

1.9137E-09

1.3343E-11

-4.1753E-13

3

-0.0606

-1.9677E-06

-8.3007E-08

5.9019E-10

-4.1666E-11

-2.6449E-12

6

-1.2388

9.5071E-06

2.0707E-08

-2.0631E-09

-7.3769E-11

-1.9896E-12

7

0.0073

1.7946E-06

1.4583E-07

3.0207E-09

-4.1856E-12

-1.6826E-12

8

-1.4938

-2.9117E-05

1.5894E-07

-3.4298E-09

6.4631E-11

1.0791E-12

9

-34.3880

2.3153E-05

-8.5426E-08

6.1155E-09

-9.7166E-11

2.5643E-12

Table 15

D(mm)	13.320	f3(mm)	42.665
				h(mm)	9.336	f5(mm)	24.600
FOV(°)	33	f6(mm)	-20.420
				TTL(mm)	32.101	f23(mm)	-208.456
F(mm)	15.986	f56(mm)	198.267
				f2(mm)	-28.755

In the present embodiment, the maximum field of view angle FOV of optical lens, first corresponding to optical lens maximum field of view angle Meet D/ between image height h corresponding to the maximum clear aperture D of the object side S1 of lens L1 and optical lens maximum field of view angle H/FOV=0.043；Meet TTL/F=between the optics total length TTL of optical lens and the whole group focal length value F of optical lens 2.008；Meet f2/f6=1.408 between the focal length value f6 of the focal length value f2 and the 6th lens L6 of second lens L2；The third lens Meet f3/f5=1.734 between the focal length value f5 of the focal length value f3 and the 5th lens L5 of L3；And second lens L2 and third it is saturating Meet between the combined focal length value f23 and the 5th lens L5 and the combined focal length value f56 of the 6th lens L6 of mirror L3 | f23/f56 |= 1.051。

To sum up, embodiment 1 to embodiment 5 meets relationship shown in following table 16 respectively.

Table 16

Conditional/embodiment	1	2	3	4	5
						D/h/FOV	0.041	0.042	0.042	0.044	0.043
TTL/F	2.169	1.959	2.088	2.050	2.008
						f2/f6	1.339	1.010	1.119	1.175	1.408
f3/f5	1.683	1.703	1.691	1.714	1.734
						\|f23/f56\|	0.950	0.773	0.895	0.457	1.051

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

1. optical lens, along optical axis by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th thoroughly Mirror, the 5th lens and the 6th lens,

It is characterized in that,

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

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

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

4th lens have positive light coke, and object side and image side surface are convex surface；

5th lens have positive light coke, and object side is convex surface, and image side surface is concave surface；And

6th lens have negative power, and object side is convex surface, and image side surface is concave surface.

2. optical lens according to claim 1, which is characterized in that first lens, the third lens and described At least one of 4th lens are aspherical lens.

3. optical lens according to claim 1, which is characterized in that further include the light before first lens are arranged in Door screen.

4. optical lens according to claim 1, which is characterized in that the optical lens is six separate type frameworks, no Including glued part.

5. optical lens described in any one of -4 according to claim 1, which is characterized in that the object side of first lens Center to the optical lens distance TTL of the imaging surface on the optical axis and the optical lens whole group focal length value F it Between meet: TTL/F≤2.5.

6. optical lens described in any one of -4 according to claim 1, which is characterized in that the focal length value f2 of second lens Meet between the focal length value f6 of the 6th lens: 0.7≤f2/f6≤1.7.

7. optical lens described in any one of -4 according to claim 1, which is characterized in that the focal length value f3 of the third lens Meet between the focal length value f5 of the 5th lens: 1.2≤f3/f5≤2.2.

8. optical lens described in any one of -4 according to claim 1, which is characterized in that second lens and the third Meet between the combined focal length value f23 of lens and the 5th lens and the combined focal length value f56 of the 6th lens: 0.1≤| f23/f56|≤1.5。

9. optical lens described in any one of -4 according to claim 1, which is characterized in that meet conditional: D/h/FOV≤ 0.055,

Wherein, FOV is the maximum field of view angle of the optical lens；

D is the maximum clear aperture of the first lens object side corresponding to the maximum field of view angle of the optical lens；And

H is image height corresponding to the maximum field of view angle of the optical lens.

It by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th along optical axis 10. optical lens Lens, the 5th lens and the 6th lens,

It is characterized in that,

First lens, the third lens, the 4th lens and the 5th lens all have positive light coke；

Second lens and the 6th lens all have negative power；And

The combined focal length of second lens and the third lens is negative value, the group of the 5th lens and the 6th lens Complex focus is positive value,

Wherein, the center of the object side of first lens to the optical lens distance of the imaging surface on the optical axis Meet between TTL and the whole group focal length value F of the optical lens: TTL/F≤2.5.

It by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th along optical axis 11. optical lens Lens, the 5th lens and the 6th lens,

It is characterized in that,

Second lens and the 6th lens all have negative power；And

At least one of first lens, the third lens and described 4th lens are aspherical lens,

Wherein, second lens and the combined focal length value f23 of the third lens and the 5th lens and the described 6th are thoroughly Meet between the combined focal length value f56 of mirror: 0.1≤| f23/f56 |≤1.5.