CN110488471A - Optical lens - Google Patents

Abstract

This application discloses a kind of optical lens, it by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens along optical axis, it is characterized in that, first lens are the meniscus lens with negative power, and its object side is convex surface, image side surface is concave surface；Second lens are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；The third lens are the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface；4th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface.The optical lens of the application has low cost, high pixel, it is preferable that the pixel feature good up to 2M or more and temperature performance.

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

At present in vehicle mounted wide-angle mirror header domain, under the premise of guaranteeing inexpensive and high performance, camera lens is increasingly paid close attention to Imaging performance at different temperatures, it is desirable to can be in different temperatures variation range, lens imaging is still able to maintain high definition.

The wide-angle lens of the prior art is generally made of 5~8 pieces of glass lens, and this wide-angle lens has the disadvantages that, Such as heavier-weight, higher cost, and distortion is more than 90 ° in visual field, and subsequent distortion can become more serious.In the prior art Some wide-angle lens can be made of 4 sheet glass eyeglasses and 2 glass lens, this camera lens price is higher, is not able to satisfy consumption Low price and high performance demands of the person to camera lens.Some camera lenses in the prior art can also be by 2 sheet glass eyeglasses and 3 glass lens Composition, since glass lens deform more serious when being subjected to high/low temperature, back focus offset of 3 glass lens under high/low temperature is difficult to It cancels themselves out, so that as variation of ambient temperature lens imaging quality can degradation.

Summary of the invention

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

The one aspect of the application provides optical lens, along optical axis by object side to image side sequentially include: the first lens, Second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, wherein the first lens are with the curved of negative power Month lens, and its object side is convex surface, image side surface is concave surface；Second lens are the meniscus lens with negative power, and its object Side is convex surface, and image side surface is concave surface；The third lens are the meniscus lens with positive light coke, and its object side is concave surface, as Side is convex surface；4th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface；5th lens and the 6th Lens are mutually glued.

In one embodiment, the 5th lens are the meniscus lens with negative power, and its object side is convex surface, as Side is concave surface.

In one embodiment, the 6th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface.

In one embodiment, the first lens into the 6th lens at least two be glass lens.

In one embodiment, refractive index Nd1 >=1.65 of the first lens material.

In one embodiment, the maximum light passing of the first lens object side corresponding to the maximum field of view angle of optical lens Bore D, optical lens maximum field of view angle corresponding to image height h, optical lens maximum field of view angle FOV between meet D/h/ FOV≤0.025。

In one embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d(S11))≥40。

In one embodiment, the radius of curvature R 5 of the third lens object side, the center thickness d5 of the third lens, third Meet 1.2≤(R5-d5)/R6≤1.8 between the radius of curvature R 6 of lens image side surface.

In one embodiment, the third lens are made of plastic material.

In one embodiment, meet F3/F >=13 between the total focal length F of optical lens and the focal length F3 of the third lens. In one embodiment, 0.55≤F6/F≤1.55 are met between the total focal length F of optical lens and the focal length F6 of the 6th lens.

In one embodiment, between the focal length F5 of the 5th lens and the focal length F6 of the 6th lens meet 0.5≤| F6/ F5|≤1.5。

In one embodiment, the focal length F23 of second, third lens group and focal length F56 of the five, the 6th lens groups it Between meet -2≤F23/F56≤- 0.4.

In one embodiment, meet between the optic back focal BFL of optical lens and the optical length TTL of optical lens BFL/TTL≥0.1。

In one embodiment, the optical lens is within the temperature range of -40 DEG C~105 DEG C, and back focus offset amount≤ 0.02mm。

In one embodiment, diaphragm is provided between the 4th lens and the 5th lens.

The one aspect of the application provides a kind of optical lens, by object side to image side sequentially includes: first along optical axis Lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, wherein the first lens are with negative light focus The meniscus lens of degree, and its object side is convex surface, image side surface is concave surface；Second lens are the meniscus lens with negative power, And its object side is convex surface, image side surface is concave surface；The third lens are the meniscus lens with positive light coke, and its object side is recessed Face, image side surface are convex surface；4th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface；Optical lens Meet 0.55≤F6/F≤1.55 between total focal length F and the focal length F6 of the 6th lens.

In one embodiment, the 5th lens are the meniscus lens with negative power, and its object side is convex surface, as Side is concave surface.

In one embodiment, the 6th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface.

In one embodiment, at least two lens of first lens into the 6th lens are glass lens.

In one embodiment, refractive index Nd1 >=1.65 of the first lens material.

In one embodiment, the maximum light passing of the first lens object side corresponding to the maximum field of view angle of optical lens Bore D, optical lens maximum field of view angle corresponding to image height h, optical lens maximum field of view angle FOV between meet D/h/ FOV≤0.025。

In one embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d(S11))≥40。

In one embodiment, the radius of curvature R 5 of the third lens object side, the center thickness d5 of the third lens, third Meet 1.2≤(R5-d5)/R6≤1.8 between the radius of curvature R 6 of lens image side surface.

In one embodiment, the third lens are made of plastic material.

In one embodiment, meet F3/F >=13 between the total focal length F of optical lens and the focal length F3 of the third lens.

In one embodiment, between the focal length F5 of the 5th lens and the focal length F6 of the 6th lens meet 0.5≤| F6/ F5|≤1.5。

In one embodiment, the focal length F23 of second, third lens group and focal length F56 of the five, the 6th lens groups it Between meet -2≤F23/F56≤- 0.4.

In one embodiment, meet between the optic back focal BFL of optical lens and the optical length TTL of optical lens BFL/TTL≥0.1。

In one embodiment, the optical lens is within the temperature range of -40 DEG C~105 DEG C, and back focus offset amount≤ 0.02mm。

In one embodiment, diaphragm is provided between the 4th lens and the 5th lens.

In one embodiment, the 5th lens and the 6th lens are mutually glued.

Optical lens proposed by the present invention has low cost, high pixel, it is preferable that pixel is up to 2M or more and temperature The characteristics of excellent performance.

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；And

The SAG that Fig. 4 shows lens mirror indicates that schematically shows the calculation methods of lens mirror SAG.

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).

In the exemplary embodiment, the first lens can be the meniscus lens with negative power, and its object side is convex Face, image side surface are concave surface.First lens are the meniscus shape for being convex to object space, can collect big field rays as much as possible, and make The light of collection enters rear optical system.In practical applications, it is contemplated that the outdoor mounted use environment of on-vehicle lens, i.e. vehicle Carrying camera lens can be that meniscus shape is conducive to the landing of water droplet, and then subtracts by the first lens design in the bad weathers such as sleet Influence of the water droplet to lens imaging on lenslet.In presently filed embodiment, glass can be used to be made for the first lens, and have There are damage resistant, the wear-resistant and characteristics such as corrosion-resistant, and also helps and keep camera lens temperature stability.Further, first Lens are glass aspheric lenses, can further promote image quality and reduce front end bore.In presently filed embodiment, High-index material can be used to be made for first lens, this is conducive to reduce front end bore and improves image quality, for example, first is saturating Refractive index Nd1 >=1.65 of mirror.

In the exemplary embodiment, the second lens can be the meniscus lens with negative power, and its object side is convex Face, image side surface are concave surface.Second lens can compress the light that the first lens are collected, and make light smooth transition to rear Optical system.The image side surface of second lens is concave surface, is conducive to reduce distance between the first lens and the second lens, so as to shorten The total physical length of camera lens and realization camera lens miniaturization.

In the exemplary embodiment, the third lens can be the meniscus lens with positive light coke, and its object side is recessed Face, image side surface are convex surface.The third lens can converge light, to make the light of diverging can smoothly enter into rear optical system System, while can balance by the spherical aberration and chromatism of position of the introducing of preceding two panels lens.The special shape of the third lens, which is provided with, to be conducive to Reduce the overall length of optical system.In the application embodiment, the third lens can be made of plastic material, have special focal length Limitation, advantageously ensures that image quality of the entire optical system under high/low temperature.In another embodiment, the third lens can also It is made of glass material, the application limits not to this.

In the exemplary embodiment, the 4th lens can have positive light coke, and its object side is convex surface, and image side surface is convex Face.4th lens can converge light, to make front end light fast convergence to rear optical system.

In the exemplary embodiment, the 5th lens can be the meniscus lens with negative power, and its object side is convex Face, image side surface are concave surface.

In the exemplary embodiment, the 6th lens can have positive light coke, and its object side is convex surface, and image side surface is convex Face.

In the exemplary embodiment, the 5th lens and the 6th lens are glued, are conducive to reduce tolerance sensitivities.Moreover, Preceding, the 6th lens with positive light coke can make by the 4th lens meeting of front end rear the 5th lens with negative power Poly- light first dissipates transition, then by the further aberration correction of the 6th lens with positive light coke and collects into light Image planes.In presently filed embodiment, it is possible to increase cemented surface subtended angle, this is conducive to marginal ray and quickly focuses, and improve at Image quality amount.

In the exemplary embodiment, refractive index Nd1 >=1.65 of the first lens material.More specifically, meet Nd1 >= 1.7.The refractive index of first lens material meets Nd1 >=1.65, is conducive to reduce front end bore and improves image quality.

In the exemplary embodiment, the maximum of the first lens object side corresponding to the maximum field of view angle of optical lens is logical Optical port diameter D, optical lens maximum field of view angle corresponding to image height h, optical lens maximum field of view angle FOV between meet D/h/ FOV≤0.025.More specifically, meeting D/h/FOV≤0.02.By meeting D/h/FOV≤0.025, it can be achieved that optical lens Front end bore is smaller.

In the exemplary embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d(S11))≥40.More specifically, meeting 40≤arctan (SAG (S11)/d (S11))≤70.By meeting arctan (SAG (S11)/d (S11)) >=40, the subtended angle of the 5th lens and the cemented surface S11 of the 6th lens is larger, is conducive to quickly focus Marginal ray improves image quality.

In the exemplary embodiment, the center thickness d5 of the radius of curvature R 5, the third lens of the third lens object side, Meet 1.2≤(R5-d5)/R6≤1.8 between the radius of curvature R 6 of three lens image side surfaces.More specifically, meeting 1.3≤(R5- d5)/R6≤1.7.By meeting 1.2≤(R5-d5)/R6≤1.8, the third lens are arranged with special shape, are conducive to be promoted Image quality and shortening camera lens overall length.

In the exemplary embodiment, the third lens are made of plastic material.

In the exemplary embodiment, meet between the total focal length F of optical lens and the focal length F3 of the third lens F3/F >= 13.More specifically, meeting F3/F >=15.By meeting F3/F >=13, the third lens may be configured as the focal length for having special, so that Imaging under high/low temperature condition through optical lens is in always on preferable imaging surface.

In the exemplary embodiment, the third lens are made of glass material.

In the exemplary embodiment, between the total focal length F of optical lens and the focal length F6 of the 6th lens meet 0.55≤ F6/F≤1.55.More specifically, meeting 0.75≤F6/F≤1.35.By the focus controlling special to the 6th lens, meet 0.55≤F6/F≤1.55 enable imaging of the camera lens under high/low temperature condition through optical lens always in preferable imaging surface On.

In the exemplary embodiment, between the focal length F5 of the 5th lens and the focal length F6 of the 6th lens meet 0.5≤| F6/F5|≤1.5.More specifically, satisfaction 0.7≤| F6/F5 |≤1.3.Pass through taking for the 5th lens and the 6th special focal length of lens Match, satisfaction 0.5≤| F6/F5 |≤1.5, that is, it can provide a kind of camera lens of ultra-wide operating temperature for remaining clear image planes.

In the exemplary embodiment, the focal length F56 of the focal length F23 of second, third lens group and the five, the 6th lens groups Between meet -2≤F23/F56≤- 0.4.More specifically, meeting -1.5≤F23/F56≤- 0.9.

In the exemplary embodiment, full between the optic back focal BFL of optical lens and the optical length TTL of optical lens Sufficient BFL/TTL >=0.1.More specifically, meeting BFL/TTL >=0.12.Meet BFL/TTL >=0.1, is convenient for lens assembling, thus Realize the overall architecture of camera lens.

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 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.

Second lens L2 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Two lens L2 are non-spherical lens, and object side and image side surface are aspherical.

The third lens L3 can be the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface.The Three lens L3 are non-spherical lens, and object side and image side surface are aspherical.

4th lens L4 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.

5th lens L5 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Five lens L5 are non-spherical lens, and object side and image side surface are aspherical.

6th lens L6 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.6th lens L6 is non- Spherical lens, object side and image side surface are aspherical.

Optionally, which may also include the optical filter with object side S13 and image side surface S14 and/or protects saturating Mirror L7.Optical filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensor chip for being located at imaging surface IMA. Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

In the optical lens of the present embodiment, diaphragm STO can be set between the 4th lens L4 and the 5th lens L5 to mention High 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

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 S3, S4 in embodiment 1, The circular cone coefficient k and high-order coefficient A, B, C, D and E of S5, S6, S10, S11 and S12.

Table 2

Face number

K

A

B

C

D

E

3

-120.0000

3.8724E-03

-2.5452E-04

1.5448E-05

-3.2075E-07

4.3704E-09

4

-1.7188

2.1801E-02

1.4737E-03

1.6804E-04

-6.0210E-05

4.0554E-05

5

2.2417

-1.0372E-02

1.4871E-03

-6.9379E-04

-2.7887E-04

8.4105E-05

6

9.4164

-5.7090E-03

-9.0007E-05

-4.7593E-05

5.6603E-06

2.9425E-06

10

-80.7555

-1.5698E-02

9.1650E-03

-9.6368E-03

4.8258E-03

-9.2923E-04

11

-2.1912

3.8756E-03

1.1562E-02

-6.7761E-03

1.6907E-03

-1.6768E-04

12

-5.8113

-2.8054E-02

6.7879E-03

-1.2481E-03

6.5193E-05

6.0649E-06

The following table 3 shows the refractive index Nd1 of the first lens material of optical lens of embodiment 1, optical lens maximum field of view Image height h, optics corresponding to the maximum clear aperture D of first lens object side, optical lens maximum field of view angle corresponding to angle The center of the maximum field of view angle FOV of camera lens, the radius of curvature R 5 of optical lens the third lens object side, optical lens the third lens Thickness d 5, the radius of curvature R 6 of optical lens the third lens image side surface, the total focal length F of optical lens, the third lens focal length F3, The focal length F5 of 5th lens, the focal length F6 of the 6th lens, the focal length F23 of second, third lens group, the five, the 6th lens groups Optic back focal BFL (that is, the distance of the image side surface center of last piece of lens to imaging surface), the optics of focal length F56, optical lens The optical length TTL (that is, the distance of the object space side center of the first lens of optical lens to optical lens imaging focal plane) of camera lens And the 5th lens and the 6th lens cemented surface S11 subtended angle arctan (SAG (S11)/d (S11)).

Table 3

In the present embodiment, the refractive index Nd1=1.800 of the first lens material；Corresponding to optical lens maximum field of view angle The maximum clear aperture D of the first lens object side, image height h and optical lens corresponding to optical lens maximum field of view angle most Meet D/h/FOV=0.012 between big field angle FOV；The radius of curvature R 5 of optical lens the third lens object side, optical lens Meet (R5-d5)/R6=between the center thickness d5 of the third lens and the radius of curvature R 6 of optical lens the third lens image side surface 1.557；Meet F3/F=17.011 between the total focal length F of optical lens and the focal length F3 of the third lens；Total coke of optical lens Meet F6/F=1.061 between focal length F6 away from F and the 6th lens；The focal length F6 of the focal length F5 of 5th lens and the 6th lens it Between meet | F6/F5 |=1.138；It is full between the focal length F23 of second, third lens group and the focal length F56 of the five, the 6th lens groups Sufficient F23/F56=-0.943；Meet BFL/TTL between the optic back focal BFL of optical lens and the optical length TTL of optical lens =0.171.

In the present embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d (S11))=44.500 °, wherein d (S11) is the maximum light passing of cemented surface S11 corresponding to optical lens maximum field of view angle Half bore of bore, SAG are Sg value corresponding to cemented surface S11 (calculating of SAG is as shown in Figure 4).

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.

First lens L1 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.

Second lens L2 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Two lens L2 are non-spherical lens, and object side and image side surface are aspherical.

The third lens L3 can be the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface.The Three lens L3 are non-spherical lens, and object side and image side surface are aspherical.

4th lens L4 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.

5th lens L5 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Five lens L5 are non-spherical lens, and object side and image side surface are aspherical.

6th lens L6 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.6th lens L6 is non- Spherical lens, object side and image side surface are aspherical.

Optionally, which may also include the optical filter with object side S13 and image side surface S14 and/or protects saturating Mirror L7.Optical filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensor chip for being located at imaging surface IMA. Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

In the optical lens of the present embodiment, diaphragm STO can be set between the 4th lens L4 and the 5th lens L5 to mention High imaging 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 S3, S4, S5, S6, S10, S11 and S12.The following table 6 is shown Go out corresponding to the refractive index Nd1 of the first lens material of optical lens of embodiment 2, optical lens maximum field of view angle first thoroughly The maximum field of view angle of image height h corresponding to the maximum clear aperture D of mirror object side, optical lens maximum field of view angle, optical lens Center thickness d5, the optical lens of FOV, the radius of curvature R 5 of optical lens the third lens object side, optical lens the third lens The radius of curvature R 6 of the third lens image side surface, the total focal length F of optical lens, the focal length F3 of the third lens, the 5th lens focal length F5, the focal length F6 of the 6th lens, the focal length F23 of second, third lens group, the five, the 6th lens groups focal length F56, optical frames Head optic back focal BFL (that is, the distance of the image side surface center of last piece of lens to imaging surface), optical lens optical length TTL (that is, the distance of the object space side center of the first lens of optical lens to optical lens imaging focal plane) and the 5th lens with The subtended angle arctan (SAG (S11)/d (S11)) of the cemented surface S11 of 6th lens.

Table 4

Face S	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					1	13.1440	0.9500	1.73	45.00
2	3.9359	1.7399
					3	82.8539	0.6944	1.49	57.00
4	2.2552	2.2917
					5	-3.8002	1.6689	1.51	63.00
6	-3.5137	0.1000
					7	7.6991	1.9371	1.85	23.80
8	-7.6991	-0.0677
					STO	Infinity	0.5048
10	9.1155	0.9990	1.66	23.50
					11	0.8667	2.8718	1.54	40.00
12	-2.6255	0.1799
					13	Infinity	0.9500	1.52	64.20
14	Infinity	1.7276
					IMA	Infinity

Table 5

Face S

K

A

B

C

D

E

3

-80.0000

3.8508E-03

-2.5528E-04

1.5407E-05

-3.2604E-07

3.5702E-09

4

-3.7133

2.1904E-02

1.4693E-03

1.6785E-04

-5.9162E-05

4.1304E-05

5

2.2490

-1.0564E-02

1.4426E-03

-6.8587E-04

-2.6395E-04

8.6381E-05

6

0.4017

-5.6062E-03

-1.1272E-04

-5.4620E-05

7.3576E-06

4.2234E-06

10

-79.6911

-5.6780E-03

9.1369E-03

-9.6873E-03

4.8078E-03

-8.8774E-04

11

-3.0905

3.8453E-03

1.1629E-02

-6.7247E-03

1.7047E-03

-1.7471E-04

12

-5.5359

-2.8256E-02

6.7709E-03

-1.2500E-03

6.3500E-05

6.0190E-06

Table 6

In the present embodiment, the refractive index Nd1=1.730 of the first lens material；Corresponding to optical lens maximum field of view angle The maximum clear aperture D of the first lens object side, image height h and optical lens corresponding to optical lens maximum field of view angle most Meet D/h/FOV=0.013 between big field angle FOV；The radius of curvature R 5 of optical lens the third lens object side, optical lens Meet (R5-d5)/R6=between the center thickness d5 of the third lens and the radius of curvature R 6 of optical lens the third lens image side surface 1.557；Meet F3/F=19.297 between the total focal length F of optical lens and the focal length F3 of the third lens；Total coke of optical lens Meet F6/F=1.058 between focal length F6 away from F and the 6th lens；The focal length F6 of the focal length F5 of 5th lens and the 6th lens it Between meet | F6/F5 |=1.124；It is full between the focal length F23 of second, third lens group and the focal length F56 of the five, the 6th lens groups Sufficient F23/F56=-1.193；Meet BFL/TTL between the optic back focal BFL of optical lens and the optical length TTL of optical lens =0.173.

In the present embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d (S11))=52.900 °, wherein d (S11) is the maximum of cemented surface S11 corresponding to optical lens maximum field of view angle Half bore of clear aperture, SAG are Sg value corresponding to cemented surface S11 (calculating of SAG is as shown in Figure 4).

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.

First lens L1 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.

Second lens L2 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Two lens L2 are non-spherical lens, and object side and image side surface are aspherical.

The third lens L3 can be the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface.The Three lens L3 are non-spherical lens, and object side and image side surface are aspherical.

4th lens L4 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.

5th lens L5 can be the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface.The Five lens L5 are non-spherical lens, and object side and image side surface are aspherical.

6th lens L6 can have positive light coke, and its object side is convex surface, and image side surface is convex surface.6th lens L6 is non- Spherical lens, object side and image side surface are aspherical.

Optionally, which may also include the optical filter with object side S13 and image side surface S14 and/or protects saturating Mirror L7.Optical filter can be used for correcting color error ratio.Protection lens can be used for protecting the image sensor chip for being located at imaging surface IMA. Light from object sequentially passes through each surface S1 to S14 and is ultimately imaged on imaging surface S15.

In the optical lens of the present embodiment, diaphragm STO can be set between the 4th lens L4 and the 5th lens L5 to mention High imaging quality.

The following table 7 shows radius of curvature R, thickness T, refractive index Nd and the Abbe of each lens of optical lens of embodiment 3 Number Vd, wherein radius of curvature R and the unit of thickness T are millimeter (mm).The following table 8 show can be used for it is aspherical in embodiment 3 The circular cone coefficient k and high-order coefficient A, B, C, D and E of lens surface S3, S4, S5, S6, S10, S11 and S12.The following table 9 is shown First lens corresponding to the refractive index Nd1 of the first lens material of optical lens of embodiment 3, optical lens maximum field of view angle The maximum field of view angle of image height h corresponding to the maximum clear aperture D of object side, optical lens maximum field of view angle, optical lens Center thickness d5, the optical lens of FOV, the radius of curvature R 5 of optical lens the third lens object side, optical lens the third lens The radius of curvature R 6 of the third lens image side surface, the total focal length F of optical lens, the focal length F3 of the third lens, the 5th lens focal length F5, the focal length F6 of the 6th lens, the focal length F23 of second, third lens group, the five, the 6th lens groups focal length F56, optical frames Head optic back focal BFL (that is, the distance of the image side surface center of last piece of lens to imaging surface), optical lens optical length TTL (that is, the object space side center of the first lens of optical lens to optical lens imaging focal plane distance) and the 5th lens With the subtended angle arctan (SAG (S11)/d (S11)) of the cemented surface S11 of the 6th lens.

Table 7

Face S	Radius of curvature R	Thickness T	Refractive index Nd	Abbe number Vd
					1	13.1348	0.9400	1.78	42.60
2	3.9474	1.9538
					3	54.0563	0.7306	1.55	57.00
4	2.3118	2.2732
					5	-3.7921	1.6649	1.51	46.10
6	-3.5049	0.1000
					7	7.6964	1.8631	1.76	35.80
8	-7.6964	-0.0677
					STO	Infinity	0.5164
10	9.2828	1.0194	1.67	23.50
					11	0.8651	2.8814	1.54	46.10
12	-2.6960	0.1799
					13	Infinity	0.9500	1.52	64.20
14	Infinity	2.6492
					IMA	Infinity

Table 8

Face S

K

A

B

C

D

E

3

-59.3456

3.8730E-03

-2.5449E-04

1.5451E-05

-3.2084E-07

4.2701E-09

4

-1.7241

2.1789E-02

1.4786E-03

1.6982E-04

-6.0028E-05

4.0456E-05

5

2.2402

-1.0355E-02

1.4917E-03

-6.9330E-04

-2.7900E-04

8.3980E-05

6

0.4171

-5.7151E-03

-8.9838E-05

-4.7284E-05

5.8009E-06

3.0272E-06

10

-80.3005

-1.5705E-02

9.1465E-03

-9.6446E-03

4.8284E-03

-9.2134E-04

11

-2.4934

3.8958E-03

1.1601E-02

-6.7683E-03

1.6889E-03

-1.6994E-04

12

-4.8435

-2.8049E-02

6.7829E-03

-1.2490E-03

6.5363E-05

6.2432E-06

Table 9

In the present embodiment, the refractive index Nd1=1.780 of the first lens material；The angle institute, maximum field of view of optical lens is right Image height h and optical lens corresponding to the maximum clear aperture D for the first lens object side answered, the maximum field of view angle of optical lens Maximum field of view angle FOV between meet D/h/FOV=0.013；The radius of curvature R 5 of optical lens the third lens object side, optics Between the center thickness d5 of camera lens the third lens and the radius of curvature R 6 of optical lens the third lens image side surface meet (R5-d5)/ R6=1.557；Meet F3/F=18.405 between the total focal length F of optical lens and the focal length F3 of the third lens；Optical lens Meet F6/F=1.014 between total focal length F and the focal length F6 of the 6th lens；The focal length F5 of 5th lens and the focal length of the 6th lens Meet between F6 | F6/F5 |=1.143；The focal length F23 of second, third lens group and focal length F56 of the five, the 6th lens groups it Between meet F23/F56=-1.001；Meet between the optic back focal BFL of optical lens and the optical length TTL of optical lens BFL/TTL=0.214.

In the present embodiment, the subtended angle of the cemented surface S11 of the 5th lens and the 6th lens meets arctan (SAG (S11)/d (S11))=52.500 °, wherein d (S11) is the maximum of cemented surface S11 corresponding to optical lens maximum field of view angle Half bore of clear aperture, SAG are Sg value corresponding to cemented surface S11 (calculating of SAG is as shown in Figure 4).

Briefly, embodiment 1 to embodiment 3 meets relationship shown in following table 10 respectively.

Table 10

Conditional/embodiment	Embodiment 1	Embodiment 2	Embodiment 3
				D/h/FOV	0.012	0.013	0.013
arctan(SAG(S11)/d(S11))	44.500	52.900	52.500
				(R5-d5)/R6	1.557	1.557	1.557
F3/F	17.011	19.297	18.405
				|F6/F5|	1.138	1.124	1.143
F23/F56	-0.943	-1.193	-1.001
				BFL/TTL	0.171	0.173	0.214
F6/F	1.061	1.058	1.014

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 (16)

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 are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；

Second lens are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；

The third lens are the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface；

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

5th lens and the 6th lens are mutually glued.

2. optical lens according to claim 1, which is characterized in that

5th lens are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；And

6th lens have positive light coke, and its object side is convex surface, and image side surface is convex surface.

3. optical lens according to claim 1, which is characterized in that the first lens into the 6th lens at least two thoroughly Mirror is glass lens.

4. optical lens according to any one of claim 1 to 3, which is characterized in that the refractive index of the first lens material Nd1≥1.65。

5. optical lens according to any one of claim 1 to 3, which is characterized in that the maximum field of view angle of optical lens Image height h, optics corresponding to the corresponding maximum clear aperture D of the first lens object side, the maximum field of view angle of optical lens Meet D/h/FOV≤0.025 between the maximum field of view angle FOV of camera lens.

6. optical lens according to any one of claim 1 to 3, which is characterized in that the 5th lens and the 6th lens The subtended angle of cemented surface S11 meets arctan (SAG (S11)/d (S11)) >=40.

7. optical lens according to any one of claim 1 to 3, which is characterized in that the curvature of the third lens object side Radius R5, the center thickness d5 of the third lens, the third lens image side surface radius of curvature R 6 between meet 1.2≤(R5-d5)/R6 ≤1.8。

8. optical lens according to any one of claim 1 to 3, which is characterized in that the third lens are by plastic material system At.

9. optical lens according to claim 8, which is characterized in that the total focal length F of optical lens and the coke of the third lens Away from meeting F3/F >=13 between F3.

10. optical lens according to any one of claim 1 to 3, which is characterized in that the focal length F5 of the 5th lens and Between the focal length F6 of six lens meet 0.5≤| F6/F5 |≤1.5.

11. optical lens according to any one of claim 1 to 3, which is characterized in that the coke of second, third lens group Meet -2≤F23/F56≤- 0.4 between focal length F56 away from F23 and the five, the 6th lens groups.

12. optical lens according to any one of claim 1 to 3, which is characterized in that the optic back focal of optical lens Meet BFL/TTL >=0.1 between BFL and the optical length TTL of optical lens.

13. optical lens according to any one of claim 1 to 3, which is characterized in that the optical lens is at -40 DEG C Within the temperature range of~105 DEG C, back focus offset amount≤0.02mm.

14. optical lens according to any one of claim 1 to 3, which is characterized in that the 4th lens and the 5th lens it Between be provided with diaphragm.

15. optical lens according to claim 1, which is characterized in that the total focal length F of optical lens and the coke of the 6th lens Away from satisfaction 0.55≤F6/F≤1.55 between F6.

It by object side to image side sequentially include: the first lens, the second lens, the third lens, the 4th along optical axis 16. optical lens Lens, the 5th lens and the 6th lens,

It is characterized in that,

First lens are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；

Second lens are the meniscus lens with negative power, and its object side is convex surface, and image side surface is concave surface；

The third lens are the meniscus lens with positive light coke, and its object side is concave surface, and image side surface is convex surface；

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

Meet 0.55≤F6/F≤1.55 between the total focal length F of optical lens and the focal length F6 of the 6th lens.