CN108873243A - Optical lens - Google Patents

Abstract

This application discloses a kind of optical lens, which sequentially includes by object side to image side along optical axis：First lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, the first lens have negative power, and image side surface is concave surface；Second lens have positive light coke, and object side is concave surface, and image side surface is convex surface；The third lens and the 4th lens glue are combined into the first balsaming lens；And the 5th lens and the 6th lens glue be combined into the second balsaming lens.

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

Due to the difference of the installation site of on-vehicle lens, the function of being focused on is different, thus to different installation sites Camera lens proposed requirement is also not quite similar.Such as front view lens, need to observe remote object, it is desirable that the focal length of camera lens is wanted Long enough.And the focal length of camera lens is longer, the visual range of field angle will be correspondingly smaller.So conventional front view lens are To detect the remote object in front, the field angle of camera lens is generally limited acquisition long-focus.With the development of science and technology To front view lens, higher requirements are also raised, and front view lens are in addition to needing with longer focal length, at a distance with detection front Object；It is also desirable to there is biggish field angle, to obtain more wide visual range.

Accordingly, it is desirable to provide one kind can further promote camera lens resolving power, extender on the basis of meeting long-focus The optical lens of head visual field scope.

Summary of the invention

Technical solution provided by the present application at least has been partially solved techniques discussed above problem.

Provide such a optical lens according to the one aspect of the application, the optical lens along optical axis by object side extremely Image side sequentially includes：First lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens.Wherein, One lens can have negative power, and image side surface is concave surface；Second lens can have positive light coke, and object side is concave surface, as Side is convex surface；The third lens and the 4th lens glue are combined into the first balsaming lens；And the 5th lens and the 6th lens it is glued Form the second balsaming lens.In some embodiments, the object side of the first lens can be convex surface.In other embodiments In, the object side of the first lens can also be concave surface.

In one embodiment, the third lens in the first balsaming lens can have negative power, object side and picture Side is concave surface；And the first the 4th lens in balsaming lens can have positive light coke, object side and image side surface are Convex surface.

In one embodiment, the 5th lens in the second balsaming lens can have negative power, and image side surface is recessed Face；And the second the 6th lens in balsaming lens can have positive light coke, object side is convex surface.Wherein, the 5th lens Object side can be convex surface, and the image side surface of the 6th lens can be concave surface；Alternatively, the object side of the 5th lens can be convex surface, the 6th thoroughly The image side surface of mirror can be convex surface；Alternatively, the object side of the 5th lens can be concave surface, the image side surface of the 6th lens can be convex surface.

In one embodiment, the 5th lens in the second balsaming lens can have positive light coke, object side and picture Side is convex surface；And the second the 6th lens in balsaming lens can have negative power, object side is concave surface, image side surface For convex surface.

It in one embodiment, is at least on one side aspherical in the object side of the second lens and image side surface.

In one embodiment, the total focal length f of the focal length of the second lens and f2 and optical lens can meet 0.6≤f2/f ≤2.3。

In one embodiment, the center of the object side of the first lens to optical lens imaging surface distance TTL with The total focal length f of optical lens can meet 2≤TTL/f≤6.

In one embodiment, the focal length f34 of the first balsaming lens and total focal length f of optical lens can meet 0.5≤ f34/f≤2.4。

In one embodiment, the combined focal length f3456 and optical lens of the first balsaming lens and the second balsaming lens Total focal length f can meet 1.2≤f3456/f≤2.8.

In one embodiment, the center of the image side surface of the 6th lens to optical lens imaging surface distance BFL with The total focal length f of optical lens can meet BFL/f >=0.6.

Optical lens through the above configuration also has high resolution, big visual field while the requirement for meeting long-focus At least one beneficial effect such as angle, low sensitivity, miniaturization.Spheric glass lens can be mostly used in the optical lens, avoided Using aspherical lens, so that it may meet the requirement of high resolution, and meet the more stable requirement of low cost, temperature performance simultaneously. Do not consider aspherical lens can also be mostly used, so that lens optical performance in cost or the lower situation of temperature performance requirement More preferably.Meanwhile the use of two groups of balsaming lens, the entirety for not only contributing to aberration correction, realizing high-resolution, compact optical Structure meets small form factor requirements, and also helping reduces lens unit because of public affairs such as the inclination generated during group is vertical and/or core shifts Poor sensitivity problem.

Detailed description of the invention

By referring to detailed description made by the following drawings, the above and further advantage of presently filed embodiment will become It obtains it is clear that attached drawing is intended to show that the illustrative embodiments of the application rather than is limited.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；

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, the first, second equal statement is only used for a feature and another feature differentiation It comes, without indicating any restrictions to feature.Therefore, discussed below without departing substantially from teachings of the present application First lens are also known as the second 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.

It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory In bright book use when indicate exist stated feature, entirety, step, operations, elements, and/or components, but do not exclude the presence of or It is attached with one or more of the other feature, entirety, step, operation, component, assembly unit and/or their combination.In addition, ought be such as When the statement of at least one of " ... " appears in after the list of listed feature, entire listed feature is modified, rather than is modified Individual component in list.In addition, when describing presently filed embodiment, use " can with " indicate " one of the application or Multiple embodiments ".Also, term " illustrative " is intended to refer to example or illustration.

As it is used in the present context, term " substantially ", " about " and similar term are used as the approximate term of table, and Be not used as the term of table degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or calculated value In inherent variability.

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 application is further described below in conjunction with specific embodiment.

Optical lens according to the application illustrative embodiments may include such as six lens, i.e. the first lens, 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 sequentially Arrangement.

According to presently filed embodiment, the first lens can have negative power, and image side surface is concave surface.In some implementations In mode, the object side of the first lens can be convex surface.When the object side of the first lens is convex surface, being conducive to will be as much as possible Ray-collecting enters optical system；Simultaneously, it is contemplated that on-vehicle lens outdoor mounted and the environment used may be more severe, by the The object side of one lens is configured to convex surface, also helps the landing of the water droplet on object side, to reduce since sleet etc. is severe Influence of the weather to lens imaging quality.In other embodiments, the object side of the first lens can be concave surface.When first thoroughly When the object side of mirror is concave surface, be conducive to the expansion of optical lens field of view angle and the reduction of camera lens front end bore, thus favorably In the reduction of camera lens overall volume；Meanwhile the object side arrangement of the first lens can also moderately be increased into distortion for concave surface, so that Camera lens is suitable for the use that automobile data recorder etc. needs emphasis amplifying observation front small range situation picture.

Second lens can have positive light coke, and object side is concave surface, and image side surface is convex surface.Second lens are arranged as convex To the meniscus lens of image space, be conducive to assemble light, and by the light smooth transition including high angle scattered light to rear light System.This arrangement of second lens also helps the increase aperture of the diaphragm, increases the whole focal length of system, so that optical lens Characteristic with long-focus.In addition, 0.6≤f2/f can be met between the focal length f2 of the second lens and the total focal length f of optical lens ≤ 2.3, more specifically, can further meet 1.56≤f2/f≤2.02 between f2 and f.As it is known to the person skilled in the art, Non-spherical lens has preferable radius of curvature characteristic, and then has the advantages that improve and distort aberration and improvement astigmatic image error, energy Enough improve image quality.In use, at least one mirror surface in the object side of the second lens and image side surface can be arranged as non- Spherical mirror surface, further to promote the image quality of camera lens.

The third lens and the 4th lens glue are combined into the first balsaming lens.The third lens can have negative power, object side Face and image side surface are concave surface.4th lens can have positive light coke, and object side and image side surface are convex surface.4th lens can It is made of the material with high refractive index and low Abbe number；Meanwhile the third lens can by with low-refraction (relative to forming The material of four lens) and the material of low Abbe number be made.The first balsaming lens being combined by the third lens and the 4th lens glue Focal length f34 and optical lens total focal length f between can meet 0.5≤f34/f≤2.4, more specifically, f34 can further expire Foot 1.19≤f34/f≤1.87.

5th lens and the 6th lens glue are combined into the second balsaming lens, wherein the 5th lens and the 6th lens can be with Various configurations mode carries out gluing.For example, the 5th lens can be the meniscus lens for being convex to object side with negative power, and with the 6th lens of five lens gluing can be the meniscus lens for being convex to object side with positive light coke；Or the 5th lens can for The meniscus lens for being convex to object side of negative power, and can be the biconvex with positive light coke with the 6th lens of the 5th lens gluing Lens.In another example the 5th lens can be the biconcave lens with negative power, and can be with the 6th lens of the 5th lens gluing Biconvex lens with positive light coke.For another example the 5th lens can be the biconvex lens with positive light coke, and with the 5th lens The 6th glued lens can be the meniscus lens for being convex to image side with negative power.

In the exemplary embodiment, the third lens, the combined focal length of the 4th lens, the 5th lens and the 6th lens 1.2≤f3456/f≤2.8 can be met between f3456 and the total focal length f of optical lens, more specifically, into one between f3456 and f Step can meet 1.56≤f3456/f≤2.10.

As it is known to the person skilled in the art, the discrete lens at light ray bending, are easy because mismachining tolerance and/or group are vertical Error causes sensitivity, and the use of balsaming lens can be effectively reduced the susceptibility of system.It is glued using two groups in this application Lens (the first balsaming lens and the second balsaming lens) can not only be effectively reduced the susceptibility of system, shorten the whole of system Body length, additionally it is possible to which the correction of the whole color difference, aberration of sharing system improves the resolving power of optical lens.

First balsaming lens and the second balsaming lens include that one piece of lens with positive light coke and one piece have negative light The lens of focal power.Wherein, one piece of lens has high index, and another piece of lens have (to be reflected compared with low-refraction relative to height The lens of rate), the fast transition of the high low-refraction of lens being collocated with conducive to front light is conducive to increase diaphragm bore, To make camera lens meet night vision requirement.The use of balsaming lens can also be while effectively reducing system color difference, so that light The overall structure of system is more compact.

According to mostly using spheric glass lens in the optical lens in the application illustrative embodiments, avoid using non- Spheric glass, so that it may meet the requirement of high resolution, and meet the more stable requirement of low cost, temperature performance simultaneously.Do not consider Cost or temperature performance require aspherical lens can also be mostly used, so that lens optical performance is more preferably in lower situation.Separately Outside, the use of two groups of balsaming lens, the overall structure, full for not only contributing to aberration correction, realizing high-resolution, compact optical Sufficient small form factor requirements, also helping reduces lens unit because the tolerances such as the inclination generated during group is vertical and/or core shift are sensitive Degree problem.

The optics total length TTL of optical lens is (that is, from the center of the object side of the first lens to the imaging surface of optical lens Distance) and the total focal length f of optical lens between can meet 2≤TTL/f≤6, more specifically, can further expire between TTL and f Foot 3.55≤TTL/f≤5.09.

Last piece of lens of optical lens (when camera lens includes six pieces of lens, last piece of lens are the 6th lens) Image side surface center to can meet between the distance BFL of imaging surface and the total focal length f of optical lens of optical lens BFL/f >= 0.6, more specifically, can further meet 1.04≤BFL/f≤2.19 between BFL and f.Back focal length, mould group can when group is vertical The tolerance of focusing is big；In the case that overall length is certain, rear burnt longer, the length of camera lens itself is shorter, and cost is lower.

Multi-disc eyeglass, such as described above six can be used according to the camera lens of the above embodiment of the application.Pass through Each power of lens of reasonable distribution, face type, focal length and each lens thickness and axis on spacing etc. so that camera lens is grown meeting There is big field angle and high resolution while focal length requires.It is for example tied in addition, the camera lens configured through the above way also has Structure is compact, light-weight shock resistance is good and the performance of athermal, and the camera lens is enabled to conform better to vehicle-mounted requirement.

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 includes from object side to six lens L1-L6 at image side sequential along optical axis. First lens L1 is the meniscus lens with negative power, and object side S1 is convex surface, and image side surface S2 is concave surface；Second lens L2 For the meniscus lens with positive light coke, object side S3 is concave surface, and image side surface S4 is convex surface；The third lens L3 is with negative light The biconcave lens of focal power, object side S6 and image side surface S7 are concave surface；4th lens L4 is the lenticular with positive light coke Mirror, object side S7 and image side surface S8 are convex surface；5th lens L5 is the meniscus lens with negative power, object side S9 For convex surface, image side surface S10 is concave surface；And the 6th lens L6 be the meniscus lens with positive light coke, object side S10 be it is convex Face, image side surface S11 are concave surface.Wherein, the third lens L3 and the 4th lens L4 gluing form the first balsaming lens.5th lens L5 The second balsaming lens is formed with the 6th lens L6 gluing.Optionally, optical lens further includes with object side S12 and image side surface The colour filter L7 of S13 and/or protection glass L8 with object side S14 and image side surface S15.Light from object sequentially passes through respectively Surface S1 to S15 is simultaneously ultimately imaged on imaging surface S16.

In the optical lens of the present embodiment, also diaphragm for example can be provided between the second lens L2 and the third lens L3 STO, to improve image quality.

Table 1 shows radius of curvature R, thickness D, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 1 Number Vd.

Face number	Radius of curvature R	Thickness D	Refractive index Nd	Abbe number Vd
					S1	30.0000	1.2000	1.90	50.00
S2	9.0000	1.5000
					S3	-12.0000	5.0000	1.80	49.00
S4	-6.0000	0.0000
					STO	Infinity	2.0000
S6	-7.0000	1.5000	1.60	31.00
					S7	25.0000	3.0000	1.96	41.00
S8	-6.0000	0.1000
					S9	20.0000	1.3000	1.90	25.70
S10	5.0000	2.0000	1.50	81.00
					S11	32.0000	2.1275
S12	Infinity	0.5500	1.52	64.17
					S13	Infinity	1.3852
S14	Infinity	0.4000	1.52	64.17
					S15	Infinity	2.7729
S16	Infinity

Table 1

The present embodiment uses six-element lens as an example, passing through the focal length and face type of each lens of reasonable distribution, is protecting While card camera lens meets long-focus requirement, expand the visual field scope of camera lens, and improve the resolving power of camera lens.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 the constant of the cone；A, B, C, D, E are high-order coefficient.The following table 2 shows the circular cone that can be used for each aspherical lens surface S3 and S4 in embodiment 1 Constant k and high-order coefficient A, B, C, D and E.

Face number

k

A

B

C

D

E

S3

-90.0000

-9.9283E-03

1.6014E-03

-2.4410E-04

2.2139E-05

-8.1073E-07

S4

-1.0000

5.5558E-04

-1.2312E-04

3.2697E-05

-3.1179E-06

1.2649E-07

Table 2

Table 3 as shown below provides the focal length f2 of the second lens L2 in embodiment 1, the total focal length f of optical lens, optics Total length TTL (from the center of the object side S1 of the first lens L1 to the distance of the imaging surface S16 of optical lens), the third lens L3 With the focal length f34, the third lens L3, the 4th lens L4, the 5th lens L5 of the first balsaming lens of the 4th lens L4 gluing composition With the imaging surface at the center of the image side surface S11 of the combined focal length f3456 and the 6th lens L6 of the 6th lens L6 to optical lens The distance BFL of S16.

Parameter	f2	f	TTL	f34	f3456	BFL
							Numerical value	10.885079	6.98941	24.8356	8.29607	13.6725	7.23561

Table 3

It can obtain, in embodiment 1, the focal length f2 of the second lens L2 and the total focal length f of optical lens according to the data in table 3 Meet f2/f=1.56；The center of the object side S1 of first lens L1 to optical lens imaging surface S16 distance TTL and optics The total focal length f of camera lens meets TTL/f=3.55；The coke of first balsaming lens of the third lens L3 and the 4th lens L4 gluing composition Total focal length f away from f34 and optical lens meets f34/f=1.19；The third lens L3, the 4th lens L4, the 5th lens L5 and The combined focal length f3456 of six lens L6 and the total focal length f of optical lens meet f3456/f=1.96；The image side of 6th lens L6 The distance BFL of imaging surface S16 and the total focal length f of optical lens of the center of face S11 to optical lens meet BFL/f=1.04.

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 includes from object side to six lens L1-L6 at image side sequential along optical axis. First lens L1 is the meniscus lens with negative power, and object side S1 is convex surface, and image side surface S2 is concave surface；Second lens L2 For the meniscus lens with positive light coke, object side S3 is concave surface, and image side surface S4 is convex surface；The third lens L3 is with negative light The biconcave lens of focal power, object side S6 and image side surface S7 are concave surface；4th lens L4 is the lenticular with positive light coke Mirror, object side S7 and image side surface S8 are convex surface；5th lens L5 is the meniscus lens with negative power, object side S9 For convex surface, image side surface S10 is concave surface；And the 6th lens L6 be the biconvex lens with positive light coke, object side S10 and picture Side S11 is convex surface.Wherein, the third lens L3 and the 4th lens L4 gluing form the first balsaming lens.5th lens L5 and 6th lens L6 gluing forms the second balsaming lens.Optionally, optical lens further includes with object side S12 and image side surface S13 Colour filter L7 and/or protection glass L8 with object side S14 and image side surface S15.Light from object sequentially passes through each table Face S1 to S15 is simultaneously ultimately imaged on imaging surface S16.

In the optical lens of the present embodiment, also diaphragm for example can be provided between the second lens L2 and the third lens L3 STO, to improve image quality.

Table 4 shows radius of curvature R, thickness D, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 2 Number Vd.Table 5 shows the constant of the cone k and high-order coefficient that can be used for each aspherical lens surface S3 and S4 in embodiment 2 A, B, C, D and E.Table 6 shows the focal length f2 of the second lens L2 in embodiment 2, the total focal length f of optical lens, optics total length TTL (from the center of the object side S1 of the first lens L1 to the distance of the imaging surface S16 of optical lens), the third lens L3 and the 4th The focal length f34, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th of first balsaming lens of lens L4 gluing composition The center of the image side surface S11 of the combined focal length f3456 and the 6th lens L6 of lens L6 to optical lens imaging surface S16 away from From BFL.

Face number	Radius of curvature R	Thickness D	Refractive index Nd	Abbe number Vd
					S1	78.0000	1.2000	1.81	52.00
S2	3.0000	1.4000
					S3	-10.0000	4.0000	1.75	26.00
S4	-5.0000	0.2000
					STO	Infinity	1.1000
S6	-9.0000	1.2000	1.60	36.00
					S7	15.0000	2.4000	1.98	43.00
S8	-7.0000	0.1000
					S9	16.0000	1.2000	1.85	25.00
S10	4.2000	3.4000	1.50	81.00
					S11	-41.0000	2.0000
S12	Infinity	0.5500	1.52	64.17
					S13	Infinity	1.3852
S14	Infinity	0.4000	1.52	64.17
					S15	Infinity	5.3692
S16	Infinity

Table 4

Face number

k

A

B

C

D

E

3

-77.0000

-1.2469E-02

2.2974E-03

-4.7925E-04

5.7265E-05

-2.3567E-06

4

-1.0000

5.5763E-04

-7.2320E-05

3.6324E-05

-4.5614E-06

1.8918E-07

Table 5

Parameter	f2	f	TTL	f34	f3456	BFL
							Numerical value	9.826556	5.09154	25.9045	8.74742	10.0772	9.704464

Table 6

It can obtain, in example 2, the focal length f2 of the second lens L2 and the total focal length f of optical lens according to the data in table 6 Meet f2/f=1.93；The center of the object side S1 of first lens L1 to optical lens imaging surface S16 distance TTL and optics The total focal length f of camera lens meets TTL/f=5.09；The coke of first balsaming lens of the third lens L3 and the 4th lens L4 gluing composition Total focal length f away from f34 and optical lens meets f34/f=1.72；The third lens L3, the 4th lens L4, the 5th lens L5 and The combined focal length f3456 of six lens L6 and the total focal length f of optical lens meet f3456/f=1.98；The image side of 6th lens L6 The distance BFL of imaging surface S16 and the total focal length f of optical lens of the center of face S11 to optical lens meet BFL/f=1.91.

Embodiment 3

The optical lens according to the embodiment of the present application 3 is described referring to Fig. 3.Fig. 3 is shown to be implemented according to the application The structural schematic diagram of the optical lens of example 3.

As shown in figure 3, optical lens includes from object side to six lens L1-L6 at image side sequential along optical axis. First lens L1 is the biconcave lens with negative power, and object side S1 and image side surface S2 are concave surface；Second lens L2 is Meniscus lens with positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface；The third lens L3 is with negative light focus The biconcave lens of degree, object side S6 and image side surface S7 are concave surface；4th lens L4 is the biconvex lens with positive light coke, Its object side S7 and image side surface S8 is convex surface；5th lens L5 is the meniscus lens with negative power, and object side S9 is Convex surface, image side surface S10 are concave surface；And the 6th lens L6 be the biconvex lens with positive light coke, object side S10 and image side Face S11 is convex surface.Wherein, the third lens L3 and the 4th lens L4 gluing form the first balsaming lens.5th lens L5 and Six lens L6 gluings form the second balsaming lens.Optionally, optical lens further includes having object side S12 and image side surface S13 Colour filter L7 and/or protection glass L8 with object side S14 and image side surface S15.Light from object sequentially passes through each surface S1 to S15 is simultaneously ultimately imaged on imaging surface S16.

In the optical lens of the present embodiment, also diaphragm for example can be provided between the second lens L2 and the third lens L3 STO, to improve image quality.

Table 7 shows radius of curvature R, thickness D, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 3 Number Vd.Table 8 shows the constant of the cone k and high-order coefficient that can be used for each aspherical lens surface S3 and S4 in embodiment 3 A, B, C, D and E.Table 9 shows the focal length f2 of the second lens L2 in embodiment 3, the total focal length f of optical lens, optics total length TTL (from the center of the object side S1 of the first lens L1 to the distance of the imaging surface S16 of optical lens), the third lens L3 and the 4th The focal length f34, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th of first balsaming lens of lens L4 gluing composition The center of the image side surface S11 of the combined focal length f3456 and the 6th lens L6 of lens L6 to optical lens imaging surface S16 away from From BFL.

Face number	Radius of curvature R	Thickness D	Refractive index Nd	Abbe number Vd
					S1	-200.0000	1.2000	1.79	59.00
S2	5.0000	1.5000
					S3	-8.0000	2.6000	1.81	41.00
S4	-5.0000	0.1934
					STO	Infinity	1.0831
S6	-10.0000	1.2000	1.60	36.00
					S7	12.0000	2.4000	1.90	45.00
S8	-7.0000	0.1000
					S9	25.0000	1.2000	1.70	25.00
S10	5.0000	3.6000	1.50	81.55
					S11	-30.0000	2.0000
S12	Infinity	0.5500	1.52	64.17
					S13	Infinity	1.3852
S14	Infinity	0.4000	1.52	64.17
					S15	Infinity	2.8958
S16	Infinity

Table 7

Face number

k

A

B

C

D

E

3

-120.0000

-1.2281E-02

2.2257E-03

-5.1193E-04

6.9644E-05

-3.6745E-06

4

-0.0984

4.5861E-04

-6.8661E-05

3.7764E-05

-6.6680E-06

5.0053E-07

Table 8

Table 9

It can obtain, in embodiment 3, the focal length f2 of the second lens L2 and the total focal length f of optical lens according to the data in table 9 Meet f2/f=2.00；The center of the object side S1 of first lens L1 to optical lens imaging surface S16 distance TTL and optics The total focal length f of camera lens meets TTL/f=3.79；The coke of first balsaming lens of the third lens L3 and the 4th lens L4 gluing composition Total focal length f away from f34 and optical lens meets f34/f=1.59；The third lens L3, the 4th lens L4, the 5th lens L5 and The combined focal length f3456 of six lens L6 and the total focal length f of optical lens meet f3456/f=1.56；The image side of 6th lens L6 The distance BFL of imaging surface S16 and the total focal length f of optical lens of the center of face S11 to optical lens meet BFL/f=1.23.

Embodiment 4

The optical lens according to the embodiment of the present application 4 is described referring to Fig. 4.Fig. 4 is shown to be implemented according to the application The structural schematic diagram of the optical lens of example 4.

As shown in figure 4, optical lens includes from object side to six lens L1-L6 at image side sequential along optical axis. First lens L1 is the biconcave lens with negative power, and object side S1 and image side surface S2 are concave surface；Second lens L2 is Meniscus lens with positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface；The third lens L3 is with negative light focus The biconcave lens of degree, object side S6 and image side surface S7 are concave surface；4th lens L4 is the biconvex lens with positive light coke, Its object side S7 and image side surface S8 is convex surface；5th lens L5 be the biconcave lens with negative power, object side S9 and Image side surface S10 is concave surface；And the 6th lens L6 be the biconvex lens with positive light coke, object side S10 and image side surface S11 is convex surface.Wherein, the third lens L3 and the 4th lens L4 gluing form the first balsaming lens.5th lens L5 and the 6th Lens L6 gluing forms the second balsaming lens.Optionally, optical lens further includes the filter with object side S12 and image side surface S13 Color chips L7 and/or protection glass L8 with object side S14 and image side surface S15.Light from object sequentially passes through each surface S1 To S15 and it is ultimately imaged on imaging surface S16.

In the optical lens of the present embodiment, also diaphragm for example can be provided between the second lens L2 and the third lens L3 STO, to improve image quality.

Table 10 shows radius of curvature R, thickness D, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 4 Number Vd.Table 11 shows the constant of the cone k and high-order coefficient that can be used for each aspherical lens surface S3 and S4 in embodiment 4 A, B, C, D and E.Table 12 shows the focal length f2 of the second lens L2 in embodiment 4, the total focal length f of optical lens, optics total length TTL (from the center of the object side S1 of the first lens L1 to the distance of the imaging surface S16 of optical lens), the third lens L3 and the 4th The focal length f34, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th of first balsaming lens of lens L4 gluing composition The center of the image side surface S11 of the combined focal length f3456 and the 6th lens L6 of lens L6 to optical lens imaging surface S16 away from From BFL.

Face number	Radius of curvature R	Thickness D	Refractive index Nd	Abbe number Vd
					S1	-18.0000	1.2000	1.73	54.67
S2	6.0000	1.4000
					S3	-15.0000	5.0000	1.81	41.00
S4	-6.0000	0.2000
					STO	Infinity	1.0000
S6	-18.0000	1.2000	1.60	36.00
					S7	11.0000	2.4000	1.88	41.01
S8	-8.0000	0.1000
					S9	-50.0000	1.2000	1.78	25.72
S10	5.0000	3.5000	1.50	81.55
					S11	-10.0000	2.0000
S12	Infinity	0.5500	1.52	64.17
					S13	Infinity	1.3852
S14	Infinity	0.4000	1.52	64.17
					S15	Infinity	4.4098
S16	Infinity

Table 10

Face number

k

A

B

C

D

E

3

-100.0000

-5.0000E-03

2.0000E-03

-5.0000E-04

1.0000E-04

-1.0000E-05

4

-0.4037

5.0000E-04

-2.0000E-04

8.0000E-05

-1.6000E-05

1.0000E-06

Table 11

Parameter	f2	f	TTL	f34	f3456	BFL
							Numerical value	9.824343	6.07573	25.945	9.3249	12.7401	8.745019

Table 12

It can obtain, in example 4, the focal length f2 of the second lens L2 and the total focal length of optical lens according to the data in table 12 F meets f2/f=1.62；The center of the object side S1 of first lens L1 to optical lens imaging surface S16 distance TTL and light The total focal length f for learning camera lens meets TTL/f=4.27；First balsaming lens of the third lens L3 and the 4th lens L4 gluing composition The total focal length f of focal length f34 and optical lens meets f34/f=1.53；The third lens L3, the 4th lens L4, the 5th lens L5 and The combined focal length f3456 of 6th lens L6 and the total focal length f of optical lens meet f3456/f=2.10；The picture of 6th lens L6 The distance BFL of imaging surface S16 and the total focal length f of optical lens of the center of side S11 to optical lens meet BFL/f= 1.44。

Embodiment 5

The optical lens according to the embodiment of the present application 5 is described referring to Fig. 5.Fig. 5 is shown to be implemented according to the application The structural schematic diagram of the optical lens of example 5.

As shown in figure 5, optical lens includes from object side to six lens L1-L6 at image side sequential along optical axis. First lens L1 is the biconcave lens with negative power, and object side S1 and image side surface S2 are concave surface；Second lens L2 is Meniscus lens with positive light coke, object side S3 are concave surface, and image side surface S4 is convex surface；The third lens L3 is with negative light focus The biconcave lens of degree, object side S6 and image side surface S7 are concave surface；4th lens L4 is the biconvex lens with positive light coke, Its object side S7 and image side surface S8 is convex surface；5th lens L5 be the biconvex lens with positive light coke, object side S9 and Image side surface S10 is convex surface；And the 6th lens L6 be the meniscus lens with negative power, object side S10 be concave surface, as Side S11 is convex surface.Wherein, the third lens L3 and the 4th lens L4 gluing form the first balsaming lens.5th lens L5 and Six lens L6 gluings form the second balsaming lens.Optionally, optical lens further includes having object side S12 and image side surface S13 Colour filter L7 and/or protection glass L8 with object side S14 and image side surface S15.Light from object sequentially passes through each surface S1 to S15 is simultaneously ultimately imaged on imaging surface S16.

In the optical lens of the present embodiment, also diaphragm for example can be provided between the second lens L2 and the third lens L3 STO, to improve image quality.

Table 13 shows radius of curvature R, thickness D, refractive index Nd and the Abbe of each lens of the optical lens of embodiment 5 Number Vd.Table 14 shows the constant of the cone k and high-order coefficient that can be used for each aspherical lens surface S3 and S4 in embodiment 5 A, B, C, D and E.Table 15 shows the focal length f2 of the second lens L2 in embodiment 5, the total focal length f of optical lens, optics total length TTL (from the center of the object side S1 of the first lens L1 to the distance of the imaging surface S16 of optical lens), the third lens L3 and the 4th The focal length f34, the third lens L3, the 4th lens L4, the 5th lens L5 and the 6th of first balsaming lens of lens L4 gluing composition The center of the image side surface S11 of the combined focal length f3456 and the 6th lens L6 of lens L6 to optical lens imaging surface S16 away from From BFL.

Face number	Radius of curvature R	Thickness D	Refractive index Nd	Abbe number Vd
					S1	-21.0000	1.2000	1.80	38.00
S2	7.0000	1.4000
					S3	-12.0000	3.2000	2.00	23.00
S4	-7.0000	0.2000
					STO	Infinity	1.0831
S6	-5.8000	1.2000	1.60	36.00
					S7	7.0000	2.4000	1.86	42.00
S8	-6.7000	0.1000
					S9	3.0000	3.0000	1.55	96.00
S10	-4.0000	1.0000	1.78	26.00
					S11	-12.0000	2.2000
S12	Infinity	0.5500	1.52	64.17
					S13	Infinity	1.3852
S14	Infinity	0.4000	1.52	64.17
					S15	Infinity	9.0840
S16	Infinity

Table 13

Face number

k

A

B

C

D

E

3

-100.0000

-1.2095E-02

2.3690E-03

-4.6387E-04

5.7504E-05

-3.4403E-06

4

0.0400

3.3961E-04

-1.0508E-04

4.3848E-05

-2.1791E-06

-3.9884E-07

Table 14

Parameter	f2	f	TTL	f34	f3456	BFL
							Numerical value	12.582216	6.21944	28.4023	11.653	9.67275	13.61922

Table 15

It can be obtained according to the data in table 15, in embodiment 5, the focal length f2 of the second lens L2 and the total focal length of optical lens F meets f2/f=2.02；The center of the object side S1 of first lens L1 to optical lens imaging surface S16 distance TTL and light The total focal length f for learning camera lens meets TTL/f=4.57；First balsaming lens of the third lens L3 and the 4th lens L4 gluing composition The total focal length f of focal length f34 and optical lens meets f34/f=1.87；The third lens L3, the 4th lens L4, the 5th lens L5 and The combined focal length f3456 of 6th lens L6 and the total focal length f of optical lens meet f3456/f=1.56；The picture of 6th lens L6 The distance BFL of imaging surface S16 and the total focal length f of optical lens of the center of side S11 to optical lens meet BFL/f= 2.19。

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

Formula embodiment	1	2	3	4	5
						f2/f	1.56	1.93	2.00	1.62	2.02
TTL/f	3.55	5.09	3.79	4.27	4.57
						f34/f	1.19	1.72	1.59	1.53	1.87
f3456/f	1.96	1.98	1.56	2.10	1.56
						BFL/f	1.04	1.91	1.23	1.44	2.19

Table 16

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 forms.

Claims (15)

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

It is characterized in that,

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

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

The third lens and the 4th lens glue are combined into the first balsaming lens；And

5th lens and the 6th lens glue are combined into the second balsaming lens.

2. optical lens according to claim 1, which is characterized in that the object side of first lens is convex surface.

3. optical lens according to claim 1, which is characterized in that the object side of first lens is concave surface.

4. optical lens according to claim 2 or 3, which is characterized in that

The third lens in first balsaming lens have negative power, and object side and image side surface are concave surface；With And

The 4th lens in first balsaming lens have positive light coke, and object side and image side surface are convex surface.

5. optical lens according to claim 2 or 3, which is characterized in that

The 5th lens in second balsaming lens have negative power, and image side surface is concave surface；And

The 6th lens in second balsaming lens have positive light coke, and object side is convex surface.

6. optical lens according to claim 5, which is characterized in that the object side of the 5th lens is convex surface, described The image side surface of 6th lens is concave surface.

7. optical lens according to claim 5, which is characterized in that the object side of the 5th lens is convex surface, described The image side surface of 6th lens is convex surface.

8. optical lens according to claim 5, which is characterized in that the object side of the 5th lens is concave surface, described The image side surface of 6th lens is convex surface.

9. optical lens according to claim 2 or 3, which is characterized in that

The 5th lens in second balsaming lens have positive light coke, and object side and image side surface are convex surface；With And

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

10. optical lens according to any one of claim 1 to 9, which is characterized in that the object side of second lens With in image side surface at least one side be it is aspherical.

11. optical lens according to any one of claim 1 to 9, which is characterized in that the focal length f2 of second lens Meet 0.6≤f2/f≤2.3 with the total focal length f of the optical lens.

12. optical lens according to any one of claim 1 to 9, which is characterized in that the object side of first lens Center to the optical lens imaging surface distance TTL and the optical lens total focal length f meet 2≤TTL/f≤6.

13. optical lens according to any one of claim 1 to 9, which is characterized in that the coke of first balsaming lens Total focal length f away from f34 and the optical lens meets 0.5≤f34/f≤2.4.

14. optical lens according to any one of claim 1 to 9, which is characterized in that first balsaming lens and institute The total focal length f of the combined focal length f3456 and the optical lens that state the second balsaming lens meet 1.2≤f3456/f≤2.8.

15. optical lens according to any one of claim 1 to 9, which is characterized in that the image side surface of the 6th lens The distance BFL of imaging surface and the total focal length f of the optical lens of center to the optical lens meet BFL/f >=0.6.