CN109425969A - Optical lens - Google Patents

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 and the 5th lens.Wherein, the second lens, the 4th lens and the 5th lens can all have negative power；The third lens can have positive light coke；Wherein, the object side of the first lens, the second lens and the 5th lens all can be concave surface, and image side surface all can be convex surface；And the third lens and the 4th lens it is glue-bondable.

Description

Optical lens

Technical field

This application involves a kind of optical lens, more specifically, this application involves a kind of optical lens including five lens.

Background technique

With imaging device (for example, camera) pixel request is gradually increased, corresponding chip size is also increased with it, So as to cause the increase of camera lens overall dimensions.Meanwhile in the case where the special applications of part, such as the night of on-vehicle lens makes With in order to promote the effect of camera lens night use, it usually needs the clear aperture for increasing camera lens also results in camera lens aperture in this way Increase.

It is more fewer better for being mounted on the exposed part of the vehicle-mounted camera lens requirement used simultaneously in view of factors such as beauties, This requires the size of camera lens front end is smaller.Meanwhile it is higher and higher to the requirement of camera lens resolving power, more particularly to active safety Camera lens, software need by camera lens shoot image calculated and proposed countermeasure automatically, therefore, the requirement to resolving power is more Add stringent.

Under normal conditions, can realize the raising of camera lens resolving power by increasing number of lenses, but corresponding camera lens volume with And weight will increase, and be unfavorable for the miniaturization of camera lens, while can cause the rising of manufacturing cost.In normal conditions, in order to full Foot miniaturization, in the case where compressing lens optical overall length, camera lens resolving power, which will receive, substantially to be influenced.

Moreover, application conditional for certain installation sites, needs just to can satisfy installation using small size camera lens and want It asks.Such as need to be mounted on the on-vehicle lens of windshield, due to having risk of interferences to windshield and being installed The limitation of position needs to meet using special lens design the requirement of small-bore, small size and high resolution.

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 5th lens.Wherein, second thoroughly Mirror, the 4th lens and the 5th lens can all have negative power；The third lens can have positive light coke；Wherein, the first lens, The object side of two lens and the 5th lens all can be concave surface, and image side surface all can be convex surface；And the third lens and the 4th lens can It is glued.

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

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

In one embodiment, at least one of the second lens and the 5th lens can be aspherical lens.

In one embodiment, the first lens can be aspherical lens.

In one embodiment, center of the radius of curvature R 9, the 5th lens of the object side of the 5th lens on optical axis It can meet between the radius of curvature R 10 of the image side surface of thickness D5 and the 5th lens: 0.4≤(R9+D5)/R10≤1.1.

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≤3.2.

In one embodiment, D/h/FOV≤0.02 can be met, wherein FOV is the maximum field of view angle of optical lens；D For the maximum clear aperture of the first lens object side corresponding to optical lens maximum field of view angle；And h is that optical lens is maximum Image height corresponding to field angle.

In one embodiment, the optics total length TTL of optical lens, picture corresponding to optical lens maximum field of view angle It can meet between high h and the maximum field of view angle FOV of optical lens: TTL/h/FOV≤0.03.

Further aspect of the application provides such a optical lens, and the optical lens is along optical axis by object side to picture Side is sequentially can include: the first lens, the second lens, the third lens, the 4th lens and the 5th lens.Wherein, the first lens can have There are positive light coke or negative power, object side can be concave surface, and image side surface can be convex surface；Second lens, the 4th lens and the 5th Lens can all have negative power；The third lens can have positive light coke；And first lens object side center to optics The imaging surface of camera lens can meet between the distance TTL on optical axis and the whole group focal length value f of optical lens: TTL/f≤3.2.

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 5th lens can be concave surface, and image side surface can be convex surface.

In one embodiment, at least one of the second lens and the 5th lens can be aspherical lens.

In one embodiment, the first lens can be aspherical lens.

In one embodiment, the third lens and the 4th lens are glue-bondable.

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

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

In one embodiment, center of the radius of curvature R 9, the 5th lens of the object side of the 5th lens on optical axis It can meet between the radius of curvature R 10 of the image side surface of thickness D5 and the 5th lens: 0.4≤(R9+D5)/R10≤1.1.

In one embodiment, D/h/FOV≤0.02 can be met, wherein FOV is the maximum field of view angle of optical lens；D For the maximum clear aperture of the first lens object side corresponding to optical lens maximum field of view angle；And h is that optical lens is maximum Image height corresponding to field angle.

In one embodiment, the optics total length TTL of optical lens, picture corresponding to optical lens maximum field of view angle It can meet between high h and the maximum field of view angle FOV of optical lens: TTL/h/FOV≤0.03.

The application uses such as five lens, passes through the shape of optimal setting eyeglass, the light focus of each eyeglass of reasonable distribution It spends, using the modes such as aspherical lens and formation balsaming lens, is had the advantages that according to the optical lens of the application Under identical imaging surface, optics total length TTL is shorter；Front end bore is small；High pixel application；Field angle is big；And L1 uses aspheric Face lens design further decreases front end bore, promotes lens imaging quality.

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；And

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

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, and it is glued saturating that the first balsaming lens is also known as second Mirror.

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 five lens with focal power, i.e., and first Lens, the second lens, the third lens, the 4th lens and the 5th lens.This five lens along optical axis from object side to image side sequentially Arrangement.

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 positive light coke or negative power, and object side can be concave surface, and image side surface can be convex surface.By One lens are arranged as concave surface towards the meniscus lens of object side, are conducive to reduce the spacing between the second lens and the third lens, from And reduce the overall length of optical system, it is also beneficial to be suitable for certain special cases for needing to distort greatly.

Second lens can have negative power, and object side can be concave surface, and image side surface can be convex surface.Second lens are diverging Front light is further dissipated, is conducive to the increase of the rear aperture of the diaphragm by lens, to reduce aperture-coefficient, promotes picture Overall brightness is conducive to the use under the conditions of night vision.

The third lens can have positive light coke.Optionally, the object side of the third lens and image side surface all can be convex surface.

4th lens can have negative power.Optionally, the object side of the 4th lens can be concave surface, and image side surface can be convex Face.

5th lens can have negative power, and object side can be concave surface, and image side surface can be convex surface.5th lens are diverging Lens make light by being quickly mapped to chip surface after the 5th lens under identical image planes size requirements, full of chip, and And meniscus shape is conducive to reduce periphery light path, while improving image quality, is conducive to reduce optical system overall length.

As it is known to the person skilled in the art, balsaming lens can be used for reducing color difference to the maximum extent or eliminate color difference.? The reflection loss that image quality can be improved using balsaming lens in optical lens, reduce light energy, to promote the clear of lens imaging Clear degree.In addition, the use of balsaming lens can also simplify the linkage editor in camera lens manufacturing process.

In the exemplary embodiment, can by by the object side of the image side surface of the third lens and the 4th lens gluing, and By the third lens and the 4th lens combination at balsaming lens.It is saturating by introducing the gluing being made of the third lens and the 4th lens Mirror can help to eliminate color difference influence, reduce the tolerance sensitivities of system, glued the third lens and the 4th lens can be with residual Stay part color difference with the whole color difference of balance optical system.In balsaming lens, the third lens close to object side have positive light focus Degree, close to image side the 4th lens have negative power, it is such be provided be conducive to will be further via the light of the second lens The 5th lens are transitted to after convergence again, are conducive to reduce camera lens rear end bore/size, shorten optical system overall length, it is short to realize TTL realizes small size performance.

Further, the configuration of balsaming lens can omit the airspace between each lens in balsaming lens, so that Optical system overall is compact, meets system compact demand.Also, the gluing of lens can reduce lens unit because organizing vertical process The tolerance sensitivities problem such as inclination/core shift of middle generation.

In the exemplary embodiment, can the light for limiting light beam be set for example between the second lens and the third lens Door screen, to further increase the image quality of camera lens.When diaphragm is set between the second lens and the third lens, it is shrinkable enter Light is penetrated, is conducive to the front and back lens set bore for reducing camera lens, shortens optical system overall length, realize small size performance.

In the exemplary embodiment, the radius of curvature R 9 of the object side of the 5th lens, the 5th lens on optical axis in 0.4≤(R9+D5)/R10≤1.1 can be met between the radius of curvature R 10 of the image side surface of heart thickness D5 and the 5th lens, more specifically Ground can further meet 0.50≤(R9+D5)/R10≤0.91.The setting of special shape in this way, is conducive to optical system Solve the promotion of picture.

First lens object side corresponding to the maximum field of view angle FOV of optical lens, optical lens maximum field of view angle is most It can meet between image height h corresponding to big clear aperture D and optical lens maximum field of view angle: D/h/FOV≤0.02, more specifically Ground, D, h and FOV can further meet D/h/FOV≤0.011.Meet conditional D/h/FOV≤0.02, it is ensured that before camera lens It holds small-bore.

Image height h corresponding to the optics total length TTL of optical lens, optical lens maximum field of view angle and optical lens are most TTL/h/FOV≤0.03 can be met between big field of view angle FOV.Configuration in this way has short under identical imaging surface TTL。

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 In the distance on optical axis) and the whole group focal length value f of optical lens between meet TTL/f≤3.2, more specifically, can further expire Sufficient TTL/f≤2.8.Meet conditional TTL/f≤2.8, it can be achieved that camera lens small size performance.

In the exemplary embodiment, at least one of the second lens and the 5th lens can be arranged as aspherical mirror Piece.In the exemplary embodiment, the first lens can be arranged as aspherical lens.The characteristics of aspherical lens, is: from eyeglass Center to periphery curvature be consecutive variations.It is different from there is the spheric glass of constant curvature from center of lens to periphery, it is aspherical Eyeglass has more preferably radius of curvature characteristic, has the advantages that improve and distorts aberration and improvement astigmatic image error.Using aspherical mirror After piece, the aberration occurred when imaging can be eliminated as much as possible, to further promote the solution picture of camera lens, reduce camera lens Front end bore.

Multi-disc eyeglass, such as described above five can be used according to the optical lens of the above embodiment of the application. By each power of lens of the above-mentioned optical lens of optimal setting, face type, shape, the reasonable employment for controlling the first lens are glued thoroughly Mirror etc. realizes small size performance in the case where guaranteeing big imaging size, high pixel, to shorten lens optical total length, to be adapted to The application (e.g., on-vehicle lens) for thering is installation to limit.

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 five lens as an example in embodiment, but the optical lens is not limited to include five 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 and the 5th lens L5.

First lens L1 is the meniscus lens with negative power, and object side S1 is concave surface, and image side surface S2 is convex surface.

Second lens L2 is the meniscus lens with negative power, and object side S3 is concave surface, and image side surface S4 is convex surface.

The third lens L3 is the biconvex lens with positive light coke, and object side S6 is convex surface, and image side surface S7 is convex surface.The Four lens L4 are the meniscus lens with negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.Wherein, third is saturating Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.

5th lens L5 is the meniscus lens with negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.

Optionally, which may also include optical filter L6 and/or protection with object side S11 and image side surface S12 Lens L6 '.Colour filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensing core for being located at imaging surface IMA Piece.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface IMA.

In this embodiment, the first lens L1, the second lens L2 and the 5th lens L5 are using aspherical lens.

In the optical lens of the present embodiment, can between the second lens L2 and the third lens L3 (that is, the second lens L2 with Between balsaming lens) diaphragm STO is set to improve image 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
					1	-5.2597	2.5117	1.59	61.16
2	-7.0236	0.3976
					3	-3.7400	1.3667	1.54	56.00
4	-5.1863	0.1616
					STO	It is infinite	-0.1021
6	5.0088	4.4521	1.77	49.61
					7	-2.7684	0.6065	1.85	23.79
8	-7.4002	1.2210
					9	-2.2974	1.0505	1.54	56.00
10	-4.1263	0.5023
					11	It is infinite	1.3062	1.52	64.21
12	It is infinite	1.7153
					IMA	It is infinite

The present embodiment uses five 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 while guaranteeing big imaging size and high pixel, Realize the effect for reducing optics total length and expanding field angle.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 can be used for aspherical lens surface S1, S2 in embodiment 1, The circular cone coefficient k and high-order coefficient A, B, C, D and E of S3, S4, S9 and S10.

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 S13 of the object side S1 of the first lens L1), the optics of head The center of the whole group focal length value f of camera lens, the radius of curvature R 9 of the object side S9 of the 5th lens L5, the 5th lens L5 on optical axis is thick Spend the radius of curvature R 10 of the image side surface S10 of D5 and the 5th lens L5.

Table 3

Parameter	D(mm)	h(mm)	FOV(°)	TTL(mm)
					Numerical value	5.41	7.09	76	15.19
Parameter	f(mm)	R9(mm)	D5(mm)	R10(mm)
					Numerical value	5.87	2.30	1.05	4.13

In the present embodiment, the radius of curvature R 9 of the object side S9 of the 5th lens L5, the 5th lens L5 on optical axis in Meet (R9+D5)/R10=0.81 between the radius of curvature R 10 of the image side surface S10 of heart thickness D5 and the 5th lens L5；Optical frames The maximum light passing of the object side S1 of the maximum field of view angle FOV of head, the first lens L1 corresponding to optical lens maximum field of view angle Meet D/h/FOV=0.01 between image height h corresponding to bore D and optical lens maximum field of view angle；The optics of optical lens Meet between image height h corresponding to total length TTL, optical lens maximum field of view angle and the maximum field of view angle FOV of optical lens TTL/h/FOV=0.03；And optical lens optics total length TTL and optical lens whole group focal length value f between meet TTL/f=2.59.

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 and the 5th lens L5.

First lens L1 is the meniscus lens with negative power, and object side S1 is concave surface, and image side surface S2 is convex surface.

Second lens L2 is the meniscus lens with negative power, and object side S3 is concave surface, and image side surface S4 is convex surface.

The third lens L3 is the biconvex lens with positive light coke, and object side S6 is convex surface, and image side surface S7 is convex surface.The Four lens L4 are the meniscus lens with negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.Wherein, third is saturating Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.

5th lens L5 is the meniscus lens with negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.

Optionally, which may also include optical filter L6 and/or protection with object side S11 and image side surface S12 Lens L6 '.Colour filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensing core for being located at imaging surface IMA Piece.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface IMA.

In this embodiment, the first lens L1, the second lens L2 and the 5th lens L5 are using aspherical lens.

In the optical lens of the present embodiment, can between the second lens L2 and the third lens L3 (that is, the second lens L2 with Between balsaming lens) diaphragm STO is set to improve image quality.

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 S1, S2, S3, S4, S9 and S10.The following table 6 gives Maximum clear aperture D, the optical frames of the object side S1 of first lens L1 corresponding to the optical lens maximum field of view angle of embodiment 2 Image height h corresponding to head maximum field of view angle, the maximum field of view angle FOV of optical lens, optical lens optics total length TTL (that is, From distance on the center to the axis of imaging surface S13 of the object side S1 of the first lens L1), the whole group focal length value f of optical lens, the 5th The picture of center thickness D5 and fiveth lens L5 of the radius of curvature R 9, the 5th lens L5 of the object side S9 of lens L5 on optical axis The radius of curvature R 10 of side S10.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 4

Face number	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					1	-5.7408	2.0106	1.59	61.16
2	-8.5648	0.6556
					3	-3.7987	1.4998	1.54	56.00
4	-5.2214	0.2000
					STO	It is infinite	-0.1264
6	5.8567	5.4785	1.77	49.61
					7	-3.5083	0.7506	1.85	23.79
8	-9.5352	1.5585
					9	-2.8431	1.3000	1.54	56.00
10	-4.6006	0.6216
					11	It is infinite	1.6165	1.52	64.21
12	It is infinite	2.4547
					IMA	It is infinite

Table 5

Face number

K

A

B

C

D

E

1

-3.6633

1.4886E-03

1.8997E-04

-2.0384E-05

2.0101E-07

3.7359E-08

2

10.0000

8.9305E-03

-3.0850E-04

3.1399E-04

-4.4444E-05

2.6136E-06

3

0.7011

8.0057E-03

-5.9487E-04

2.5709E-04

-3.5913E-05

1.0656E-06

4

-0.1469

1.3218E-03

-3.2919E-04

5.3576E-05

-1.0993E-05

6.5552E-07

9

-0.5084

-3.0521E-03

2.8388E-04

7.2123E-06

1.2458E-06

-2.9644E-09

10

0.3618

3.4877E-04

7.8140E-05

3.5131E-05

-2.5618E-06

1.1264E-07

Table 6

Parameter	D(mm)	h(mm)	FOV(°)	TTL(mm)
					Numerical value	6.10	8.80	70	18.02
Parameter	f(mm)	R9(mm)	D5(mm)	R10(mm)
					Numerical value	7.43	2.84	1.30	4.60

In the present embodiment, the radius of curvature R 9 of the object side S9 of the 5th lens L5, the 5th lens L5 on optical axis in Meet (R9+D5)/R10=0.90 between the radius of curvature R 10 of the image side surface S10 of heart thickness D5 and the 5th lens L5；Optical frames The maximum light passing of the object side S1 of the maximum field of view angle FOV of head, the first lens L1 corresponding to optical lens maximum field of view angle Meet D/h/FOV=0.01 between image height h corresponding to bore D and optical lens maximum field of view angle；The optics of optical lens Meet between image height h corresponding to total length TTL, optical lens maximum field of view angle and the maximum field of view angle FOV of optical lens TTL/h/FOV=0.03；And optical lens optics total length TTL and optical lens whole group focal length value f between meet TTL/f=2.43.

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 and the 5th lens L5.

First lens L1 is the meniscus lens with positive light coke, and object side S1 is concave surface, and image side surface S2 is convex surface.

Second lens L2 is the meniscus lens with negative power, and object side S3 is concave surface, and image side surface S4 is convex surface.

The third lens L3 is the biconvex lens with positive light coke, and object side S6 is convex surface, and image side surface S7 is convex surface.The Four lens L4 are the meniscus lens with negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.Wherein, third is saturating Mirror L3 and the 4th lens L4 gluing unit are at balsaming lens.

5th lens L5 is the meniscus lens with negative power, and object side S9 is concave surface, and image side surface S10 is convex surface.

Optionally, which may also include optical filter L6 and/or protection with object side S11 and image side surface S12 Lens L6 '.Colour filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensing core for being located at imaging surface IMA Piece.Light from object sequentially passes through each surface S1 to S12 and is ultimately imaged on imaging surface IMA.

In this embodiment, the first lens L1, the second lens L2 and the 5th lens L5 are using aspherical lens.

In the optical lens of the present embodiment, can between the second lens L2 and the third lens L3 (that is, the second lens L2 with Between balsaming lens) diaphragm STO is set to improve image quality.

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 S1, S2, S3, S4, S9 and S10.The following table 9 gives Maximum clear aperture D, the optical frames of the object side S1 of first lens L1 corresponding to the optical lens maximum field of view angle of embodiment 3 Image height h corresponding to head maximum field of view angle, the maximum field of view angle FOV of optical lens, optical lens optics total length TTL (that is, From distance on the center to the axis of imaging surface S13 of the object side S1 of the first lens L1), the whole group focal length value f of optical lens, the 5th The picture of center thickness D5 and fiveth lens L5 of the radius of curvature R 9, the 5th lens L5 of the object side S9 of lens L5 on optical axis The radius of curvature R 10 of side S10.Wherein, each aspherical face type can be limited by the formula (1) provided in above-described embodiment 1.

Table 7

Face number	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					1	-8.5688	3.3667	1.59	61.16
2	-7.8754	0.1472
					3	-5.6974	2.8482	1.54	56.00
4	-7.3948	0.1616
					STO	It is infinite	-0.1021
6	6.1397	4.2431	1.77	49.61
					7	-2.8822	0.6065	1.85	23.79
8	-7.8237	1.9093
					9	-2.2974	1.0505	1.54	56.00
10	-6.6261	0.5023
					11	It is infinite	1.3062	1.52	64.21
12	It is infinite	0.4326
					IMA	It is infinite

Table 8

Face number

K

A

B

C

D

E

1

1.9390

-5.8974E-04

4.2260E-04

-5.7850E-05

4.6046E-06

-1.5305E-07

2

10.0000

1.6671E-02

-2.0809E-03

1.2882E-03

-3.0706E-04

3.6334E-05

3

1.6951

1.5164E-02

-2.4603E-03

9.6907E-04

-2.1905E-04

2.5282E-05

4

1.7103

6.4112E-04

-6.8241E-04

2.7285E-04

-6.9127E-05

6.5139E-06

9

-0.4290

-9.9503E-03

5.3609E-04

2.6003E-04

1.0201E-05

-2.1854E-06

10

3.5048

-1.7769E-02

1.1847E-03

1.1387E-04

-1.5716E-05

9.7112E-07

Table 9

In the present embodiment, the radius of curvature R 9 of the object side S9 of the 5th lens L5, the 5th lens L5 on optical axis in Meet (R9+D5)/R10=0.51 between the radius of curvature R 10 of the image side surface S10 of heart thickness D5 and the 5th lens L5；Optical frames The maximum light passing of the object side S1 of the maximum field of view angle FOV of head, the first lens L1 corresponding to optical lens maximum field of view angle Meet D/h/FOV=0.01 between image height h corresponding to bore D and optical lens maximum field of view angle；The optics of optical lens Meet between image height h corresponding to total length TTL, optical lens maximum field of view angle and the maximum field of view angle FOV of optical lens TTL/h/FOV=0.03；And optical lens optics total length TTL and optical lens whole group focal length value f between meet TTL/f=2.80.

To sum up, embodiment 1 to embodiment 3 meets relationship shown in following table 10 respectively.

Table 10

Conditional embodiment	1	2	3
				(R9+T5)/R10	0.81	0.90	0.51
D/h/FOV	0.01	0.01	0.01
				TTL/h/FOV	0.03	0.03	0.03
TTL/f	2.59	2.43	2.80

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

Claims (10)

1. optical 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 and the 5th lens,

It is characterized in that,

The third lens have positive light coke；

Second lens, the 4th lens and the 5th lens all have negative power；

Wherein,

The object side of first lens, second lens and the 5th lens is all concave surface, and image side surface is all convex surface；With And

The third lens and the 4th lens are glued.

2. optical lens according to claim 1, which is characterized in that the object side of the third lens and image side surface are all Convex surface.

3. optical lens according to claim 1, which is characterized in that the object side of the 4th lens is concave surface, image side Face is convex surface.

4. optical lens according to claim 1, which is characterized in that in second lens and the 5th lens extremely One of few is aspherical lens.

5. optical lens according to claim 1, which is characterized in that first lens are aspherical lens.

6. optical lens according to any one of claim 1 to 5, which is characterized in that the object side of the 5th lens Radius of curvature R 9, center thickness D5 of the 5th lens on the optical axis and the 5th lens image side surface curvature Meet between radius R10: 0.4≤(R9+D5)/R10≤1.1.

7. optical lens according to any one of claim 1 to 5, which is characterized in that the object side of first lens Center to distance TTL of the imaging surface on the optical axis of the optical lens and whole group focal length value f of the optical lens Between meet: TTL/f≤3.2.

8. optical lens according to any one of claim 1 to 5, which is characterized in that meet D/h/FOV≤0.02,

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 optical lens maximum field of view angle；And

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

9. optical lens according to any one of claim 1 to 5, which is characterized in that the optics of the optical lens is total The maximum field of view angle FOV of image height h corresponding to length TTL, optical lens maximum field of view angle and the optical lens it Between meet: TTL/h/FOV≤0.03.

10. optical lens, which is characterized in that the optical lens includes:

First lens have positive light coke or negative power, and object side is concave surface, and image side surface is convex surface, first lens Object side center to distance TTL of the imaging surface on optical axis of the optical lens and the whole group focal length of the optical lens Meet between value f: TTL/f≤3.2；

Second lens have negative power；

The third lens have positive light coke；

4th lens have negative power；And

5th lens have negative power,

Wherein, first lens, second lens, the third lens, the 4th lens and the 5th lens edge The optical lens the optical axis by object side to image side sequential.