CN109765678A - A kind of pick-up lens and electronic equipment - Google Patents
A kind of pick-up lens and electronic equipment Download PDFInfo
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- CN109765678A CN109765678A CN201910243304.3A CN201910243304A CN109765678A CN 109765678 A CN109765678 A CN 109765678A CN 201910243304 A CN201910243304 A CN 201910243304A CN 109765678 A CN109765678 A CN 109765678A
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Abstract
The invention discloses a kind of pick-up lens, for seven chip lens arrangements, second lens and the 5th lens all have positive refracting power, the third lens and the 6th lens all have negative refracting power, first lens image side surface is concave surface at dipped beam axis, and the third lens object side is concave surface at dipped beam axis, and the 5th lens object side is concave surface at dipped beam axis, 7th lens image side surface is concave surface at dipped beam axis, and the 7th lens image side surface has an at least point of inflexion.By each lens using reasonable face structure and the optimization range combinations of each optics of lens parameter, can have good image quality, and by rationally limiting the third lens, the sum of thickness of the 4th lens and the third lens to the ratio of the 4th lens spacing distance on optical axis, it can make lens distribution uniform, be conducive to the collocation between eyeglass.Pick-up lens of the present invention has the characteristics such as large aperture, high pixel, high-resolution, excellent field of view angle.Invention additionally discloses a kind of electronic equipment.
Description
Technical field
The present invention relates to optical imaging device technical fields, more particularly to a kind of pick-up lens.The invention further relates to one
Kind electronic equipment.
Background technique
With the quick update of the relevant consumption electronic product such as smart phone, portable computer and tablet device, city
Field is higher and higher to the quality requirements of the optical imaging lens of electronic product.With progressing greatly for semiconductor fabrication process technology,
It realizes that the Pixel Dimensions of sensor devices reduce, correspondingly, imaging lens system group gradually develops toward high pixel neighborhoods, therefore it is imaged
The requirement of quality also increasingly improves.
The camera lens that tradition is equipped on portable product mostly uses three-chip type or quadruple lenses structure, and with market pair
Requirement of the camera lens in pixel and image quality is constantly soaring, and existing optical camera lens have been unable to satisfy the photography of higher order
System.With the development of technology and users on diversity increases, to obtain more preferably image quality, five chips, six
Formula, seven chip lens arrangements occur gradually in pick-up lens design.On the other hand, to have the imaging surface of pick-up lens
Enough illumination, large aperture characteristic are even more current indispensable one of element.Therefore need a kind of large aperture have both it is outstanding
The pick-up lens of optical signature.
Summary of the invention
The object of the present invention is to provide a kind of pick-up lens, have large aperture, high pixel, high-resolution, excellent visual field
The characteristics such as angle are capable of providing good image quality, meet application requirement.The present invention also provides a kind of electronic equipment.
To achieve the above object, the invention provides the following technical scheme:
A kind of pick-up lens, by object side to image side sequentially include the first lens, the second lens, the third lens, the 4th lens,
5th lens, the 6th lens and the 7th lens, each lens have towards the object side of object space and towards the image side surface of image space,
Wherein:
Second lens and the 5th lens all have positive refracting power, and the third lens and the 6th lens are equal
With negative refracting power, first lens, the 4th lens, the 7th lens have positive refracting power or negative refracting power；
The first lens image side surface is concave surface at dipped beam axis, and the third lens object side is recessed at dipped beam axis
Face, the 5th lens object side are concave surface at dipped beam axis, and the 7th lens image side surface is concave surface at dipped beam axis, and institute
The 7th lens image side surface is stated with an at least point of inflexion；
And meet following condition formulae:
0.1<(CT3+CT4)/T34<5；
Wherein, CT3Indicate the third lens in the thickness on optical axis, CT4Indicate the 4th lens in the thickness on optical axis
Degree, T34Indicate spacing distance of the third lens image side surface to the 4th lens object side on optical axis.
Preferably, the second lens object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.
Preferably, it also satisfies the following conditional expression: -2.5 < (R41-R42)/(R41+R42) < 0, wherein R41Indicate that the described 4th is saturating
The radius of curvature of mirror object side, R42Indicate the radius of curvature of the 4th lens image side surface.
Preferably, it also satisfies the following conditional expression: 0.5 < YC42/YC62< 1.5, wherein YC42Indicate the 4th lens image side
Vertical range of the point of inflexion in face to optical axis, YC62Indicate the point of inflexion of the 6th lens image side surface to the vertical range of optical axis.
Preferably, also satisfy the following conditional expression: 1.5 < ALT/EPD < 2.5, wherein ALT indicates the first lens object side
To the 7th lens image side surface in the distance on optical axis, EPD indicates the Entry pupil diameters of the pick-up lens.
Preferably, it also satisfies the following conditional expression: 0 < (imgh-f/EPD)/(imgh+f/EPD) < 0.5, wherein described in f expression
The focal length of pick-up lens, EPD indicate that the Entry pupil diameters of the pick-up lens, imgh indicate the maximum of the pick-up lens at image height
The half of degree.
Preferably, it also satisfies the following conditional expression: 0.2 < YC72/ f < 0.7, wherein YC72Indicate the 7th lens image side surface
The point of inflexion to the vertical range of optical axis, f indicates the focal length of the pick-up lens.
Preferably, it also satisfies the following conditional expression: -1.2 < R72/R71< 1, wherein R72Indicate the 7th lens image side surface
Radius of curvature, R71Indicate the radius of curvature of the 7th lens object side.
Preferably, it also satisfies the following conditional expression: -2 < f/f7< 1, wherein f indicates the focal length of the pick-up lens, f7Indicate institute
State the focal length of the 7th lens.
A kind of electronic equipment, including photographic device, the photographic device include electronics photosensitive element and above-described take the photograph
As camera lens, the electronics photosensitive element is set to the imaging surface of the pick-up lens.
As shown from the above technical solution, a kind of pick-up lens provided by the present invention is seven chip lens arrangements, including by
The first lens that object side to image side is set gradually, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and
Seven lens, object space light successively pass through each lens, are imaged on the imaging surface of the 7th lens image side.This pick-up lens is each
Mirror can have good imaging product using reasonable face structure and the optimization range combinations of each optics of lens parameter
Matter.Wherein by rationally limiting the sum of thickness and the third lens image side surface to the 4th lens object side of the third lens, the 4th lens
The ratio of spacing distance of the face on optical axis can make close to object and the lesser lens of effective radius and close imaging surface and have
The biggish lens distribution uniform of radius is imitated, the collocation between eyeglass is conducive to.Pick-up lens provided by the invention has big light
The characteristics such as circle, high pixel, high-resolution, excellent field of view angle, are capable of providing good image quality, meet application requirement.
A kind of electronic equipment provided by the invention can reach above-mentioned beneficial effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 1 provides；
Fig. 2 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 1；
Fig. 3 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 1；
Fig. 4 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 2 provides；
Fig. 5 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 2；
Fig. 6 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 2；
Fig. 7 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 3 provides；
Fig. 8 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 3；
Fig. 9 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 3；
Figure 10 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 4 provides；
Figure 11 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 4；
Figure 12 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 4；
Figure 13 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 5 provides；
Figure 14 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 5；
Figure 15 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 5；
Figure 16 is a kind of schematic diagram for pick-up lens that the embodiment of the present invention 6 provides；
Figure 17 is the perturbed field diagram of pick-up lens in the embodiment of the present invention 6；
Figure 18 is the spherical aberration curve graph of pick-up lens in the embodiment of the present invention 6；
Figure 19 is painted Yc in the pick-up lens according to the embodiment of the present invention 142Schematic diagram；
Figure 20 is painted Yc in the pick-up lens according to the embodiment of the present invention 162Schematic diagram；
Figure 21 is painted Yc in the pick-up lens according to the embodiment of the present invention 172Schematic diagram.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
The present invention provides a kind of pick-up lens, by object side to image side sequentially includes the first lens, the second lens, along optical axis
Three lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens, each lens have towards object space object side and
Towards the image side surface of image space.It further include that an imaging surface for being located at the 7th lens image side and one are set to the 7th lens and imaging
Infrared fileter between face, the infrared fileter do not influence the focal length of pick-up lens.
First lens have refracting power, and object side can be convex surface at dipped beam axis, help to shorten the total of imaging system
Length, the image side surface of the first lens can be concave surface at dipped beam axis, can adjust low order aberration.
Second lens have positive refracting power, and its refracting power is better than the first lens, it is possible to provide main aggregate capabilities, effectively
The total length of pick-up lens is controlled, in favor of the miniaturization of photographic device, while the object side of the second lens can at dipped beam axis
For convex surface, image side surface can be convex surface at dipped beam axis, facilitate the aberration of balanced image acquisition system, to promote imaging product
Matter, and keep filmed image relatively sharp.
The third lens can have negative refracting power, help to correct aberration caused by the second lens, and reduce camera lens
The susceptibility of head.The third lens object side is concave surface at dipped beam axis, and the image side surface of the third lens can be concave surface at dipped beam axis,
It can provide the main diverging ability of pick-up lens, with balance because of aberration caused by control overall length.
4th lens can have positive refracting power, can cooperate the positive refracting power of the second lens, in favor of pick-up lens
Susceptibility and further promote manufacturing yield.The object side of 4th lens can be convex surface at dipped beam axis, can correct spherical aberration, effectively
Promote image quality.In addition, the image side surface of the 4th lens can be concave surface at dipped beam axis, and its image side surface includes an at least contrary flexure
Point is conducive to the off-axis aberration that makes corrections.
5th lens can have positive refracting power, it is possible to provide the aggregate capabilities at pick-up lens image side end, in favor of expanding visual field
Angle, to increase application range.5th lens object side is concave surface at dipped beam axis, and the 5th lens image side surface can at dipped beam axis
For convex surface, the symmetry of pick-up lens can be promoted, to avoid excessive aberration is generated.
6th lens can have negative refracting power, and image side surface is concave surface at dipped beam axis.Whereby, the 7th lens control can be assisted
Back focal length degree processed, it is excessive to avoid camera lens volume and plant bulk is caused to be not easy to reduce.
7th lens have refracting power, and image side surface is concave surface at dipped beam axis, help to make the principal point of pick-up lens to have
It imitates far from imaging surface, to reinforce shortening its back focal length, and then the total length of pick-up lens can be reduced, achieve the purpose that miniaturization.
In addition, the image side surface of the 7th lens is had the variation for turning convex surface by concave surface by dipped beam axis to edge, there is the point of inflexion, it can be effectively
The light for suppressing off-axis visual field is incident in angle on Image Sensor, preferably the aberration of modified off-axis visual field.
By rationally controlling the positive and negative distribution of the refracting power of each lens in pick-up lens lens group, control can be effectively balanced
The low order aberration of lens group processed, and the tolerance sensitivity of camera lens can be reduced, advantageously ensure that the miniaturization of pick-up lens.This camera shooting
It can be respectively provided with interval between arbitrary two adjacent lens of camera lens, be conducive to the assembling of lens, to promote manufacturing yield.Separately
Outside, this pick-up lens meets condition 0.1 < (CT3+CT4)/T34< 5, wherein CT3Indicate the third lens in the thickness on optical axis,
CT4Indicate the 4th lens in the thickness on optical axis, T34Indicate the third lens image side surface to the 4th lens object side
Spacing distance of the face on optical axis.Pass through the sum of thickness for rationally limiting the third lens, the 4th lens and the third lens image side surface
To the ratio of spacing distance of the 4th lens object side on optical axis, can make close to object and the lesser lens of effective radius with
Close to imaging surface and the biggish lens distribution uniform of effective radius, be conducive to the collocation between eyeglass.Pick-up lens of the present invention
In each lens using the optimization range combinations of reasonable face structure and each optics of lens parameter, this pick-up lens can be made
With characteristics such as large aperture, high pixel, high-resolution, excellent field of view angle, it is capable of providing good image quality, satisfaction is answered
With requiring.
Preferably, this pick-up lens also satisfies the following conditional expression: -2.5 < (R41-R42)/(R41+R42) < 0, wherein R41It indicates
The radius of curvature of 4th lens object side, R42Indicate the radius of curvature of the 4th lens image side surface.By rationally controlling
The object side of 4th lens and the radius of curvature of image side surface, can efficiently control the object side of the 4th lens and the picture of image side surface
Contribution amount is dissipated, and then effective and reasonable the image quality for controlling intermediate visual field and aperture band.
Preferably, this pick-up lens also satisfies the following conditional expression: 0.5 < YC42/YC62< 1.5, wherein YC42Indicate described
Vertical range of the point of inflexion of four lens image side surfaces to optical axis, YC62Indicate the point of inflexion of the 6th lens image side surface to optical axis
Vertical range.Ray height can effectively be promoted by meeting this condition, meet the requirement of the high pixel of imaging system, and keep light inclined
Folding tends to mitigate, and the susceptibility of imaging system can be effectively reduced, while can effectively correct coma, distortion and the color of imaging system
Difference.
Preferably, this pick-up lens also satisfies the following conditional expression: 1.5 < ALT/EPD < 2.5, and wherein ALT indicates described first
To the 7th lens image side surface in the distance on optical axis, EPD indicates the Entry pupil diameters of the pick-up lens for lens object side.It is full
This condition of foot can increase the light-inletting quantity of pick-up lens, and maintain its miniaturization simultaneously.
Preferably, this pick-up lens also satisfies the following conditional expression: 0 < (imgh-f/EPD)/(imgh+f/EPD) < 0.5,
Middle f indicates that the focal length of the pick-up lens, EPD indicate that the Entry pupil diameters of the pick-up lens, imgh indicate the pick-up lens
Maximum image height half.Meet the characteristic that this condition can make pick-up lens take into account large aperture, high pixel.
Preferably, this pick-up lens also satisfies the following conditional expression: 0.2 < YC72/ f < 0.7, wherein YC72Indicate the described 7th
For the point of inflexion of lens image side surface to the vertical range of optical axis, f indicates the focal length of the pick-up lens.Control can be conducive to by meeting this condition
Marginal ray angle processed, and modified off-axis aberration, while ensuring that lens thickness is moderate, so that the volume of pick-up lens is met slim electricity
The demand of sub- equipment.
Preferably, this pick-up lens also satisfies the following conditional expression: -1.2 < R72/R71< 1, wherein R72Indicate that the described 7th is saturating
The radius of curvature of mirror image side, R71Indicate the radius of curvature of the 7th lens object side.Meeting this condition can ensure that the 7th is saturating
Image side mask prepares enough enough curvatures, to control pick-up lens back focal length, and is conducive to its miniaturization.
Preferably, this pick-up lens also satisfies the following conditional expression: -2 < f/f7< 1, wherein f indicates the coke of the pick-up lens
Away from f7Indicate the focal length of the 7th lens.Meeting this condition can ensure that the 7th lens have focal power appropriate, avoid the 7th
Power of lens is too strong or excessively weak, can suitably adjust the incidence angle by the light of pick-up lens to imaging surface, simultaneously
Curvature of the image can be suitably corrected well.
It should be noted that refracting power refers to directional light by optical system, deviation can occur for the direction of propagation of light, use
In characterization optical system to the flexion ability of incoming parallel beam.Optical system has positive refracting power, shows the flexion to light
It is convergence property；Optical system has negative refracting power, shows that the flexion of light be diversity.In pick-up lens of the present invention
In, if the refracting power or focal length of lens do not define its regional location, then it represents that the refracting power or focal length of the lens can be lens
Refracting power or focal length at dipped beam axis.
It arranges for lens each in pick-up lens, in the case where being from the object side to image side from left to right, lens object side
Referring to that section is done at lens object side any point Guo Mianshang for convex surface, total surface is on the right of section, and radius of curvature is positive,
Otherwise object side is then concave surface, and radius of curvature is negative.Lens image side surface is that refer to that lens image side surface is crossed any one on face on convex surface
Point does section, and total surface is on the left side of section, and radius of curvature is negative, otherwise image side surface is concave surface, and radius of curvature is positive.
If crossing any point on lens object side or image side surface does section, the existing part on the section left side in surface, and has in section
The part on the right, then there are the points of inflexion on the surface.Lens object side, image side surface dipped beam axis at concave-convex judgement be still applicable in
It states.In addition, referring to the region near optical axis at dipped beam axis.In pick-up lens of the present invention, if lens surface is convex surface and non-boundary
When the fixed convex surface position, then it represents that the convex surface can be located at lens surface dipped beam axis；If lens surface is concave surface and does not define this
When the position of concave surface, then it represents that the concave surface can be located at lens surface dipped beam axis.
In pick-up lens disclosed by the invention, lens select the material system with high transparency and excellent workability
Make, for example, selecting plastic production lens, is conducive to the production molding of lens, to promote manufacturing yield, and meets the material of the condition
Expect easy acquisition low in cost, advantageously reduces production cost.In addition, the object side of each lens and image side surface can be aspherical
(ASP), aspherical to be easy to be fabricated to the shape other than spherical surface, more controlled variable is obtained, to cut down aberration, in turn
The number that reduction lens use, therefore the total length of this pick-up lens can be effectively reduced.
In addition, an at least diaphragm settable on demand helps to be promoted in pick-up lens of the present invention to reduce stray light
Image quality.In the present invention, aperture configuration can be preposition aperture, i.e. aperture is set between object and the first lens.Light
The preposition setting of circle can make the outgoing pupil of optical imaging lens and imaging surface generate longer distance, make it have telecentricity effect
Fruit, and the CCD or CMOS that can increase electronics photosensitive element receive the efficiency of image.
Pick-up lens of the present invention is described in detail with specific embodiment below.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.Below with reference to the accompanying drawings and combine implementation
Example is described in detail the application.
[embodiment 1]
Referring to FIG. 1, showing the structural schematic diagram of the pick-up lens of embodiment 1.As seen from the figure, the present embodiment camera lens
Head includes the aperture 10 set gradually along optical axis by object side to image side, the first lens 11, the second lens 12, the third lens 13, the
Four lens 14, the 5th lens 15, the 6th lens 16 and the 7th lens 17, each lens have towards the object side of object space and court
To the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 11 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 12 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 13 have negative refracting power,
Object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 14 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 15 have positive refracting power,
Object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 16 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 17 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 17 and imaging surface 19 in addition, the pick-up lens has additionally comprised infrared fileter 18, by red
Outer optical filter 18 is filtered out into the infrared band light in pick-up lens, avoids generating noise on Infrared irradiation to sensitive chip.
Optional optical filter material is glass and does not influence focal length.
The value that the present embodiment pick-up lens meets conditional is as shown in table 7.In addition, please referring to Figure 19, Figure 20 and Figure 21 institute
Show, the point of inflexion 1421 of 14 image side surface of the 4th lens arrives the vertical range Yc of optical axis42As shown in figure 19,16 image side surface of the 6th lens
The point of inflexion 1621 arrive optical axis vertical range Yc62As shown in figure 20, the point of inflexion 1721 of 17 image side surface of the 7th lens arrives optical axis
Vertical range Yc72As shown in figure 21.
The detailed optical data of embodiment 1 is as shown in table 1-1, and the unit of radius of curvature, thickness and focal length is millimeter, and f is
The focal length of pick-up lens, Fno are f-number, and FOV is maximum field of view angle, and surface 0-18 is sequentially indicated by each of object side to image side
Surface.Wherein surface 1-15 successively indicates aperture, the first lens object side, the first lens image side surface, the second lens object side,
Two lens image side surfaces, the third lens object side, the third lens image side surface, the 4th lens object side, the 4th lens image side surface, the 5th
Lens object side, the 5th lens image side surface, the 6th lens object side, the 6th lens image side surface, the 7th lens object side and the 7th
Lens image side surface.
Table 1-1
Each lens use aspheric design in this pick-up lens, and aspherical fitting equation is expressed as follows:
Wherein, X indicate aspherical on be Y apart from optical axis point, and be tangential on the section on vertex on aspherical optical axis
Relative distance；R indicates radius of curvature；Y indicates the point in aspheric curve to the vertical range of optical axis；K indicates circular cone coefficient；Ai
Indicate the i-th rank asphericity coefficient.
For the asphericity coefficient of each lens of the present embodiment as shown in table 1-2, k indicates the circular cone system in aspheric curve equation
Number, A4-A16 respectively indicate lens surface 4-16 rank asphericity coefficient.The perturbed field diagram of the present embodiment pick-up lens and
Spherical aberration curve graph difference is as shown in Figures 2 and 3, wherein a length of 0.555 μm of perturbed field diagram medium wave, and spherical aberration curve graph medium wave is a length of
0.470 μm, 0.510 μm, 0.555 μm, 0.610 μm and 0.650 μm.In addition, following embodiment table is corresponding each embodiment
Pick-up lens schematic diagram, the distortion curvature of field and spherical aberration curve graph, in table data define all with the table 1-1 and table of embodiment 1
The definition of 1-2 is identical, is not added repeats below.
Table 1-2
[embodiment 2]
Referring to FIG. 4, showing the structural schematic diagram of the pick-up lens of embodiment 2.As seen from the figure, the present embodiment camera lens
Head includes the aperture 20 set gradually along optical axis by object side to image side, the first lens 21, the second lens 22, the third lens 23, the
Four lens 24, the 5th lens 25, the 6th lens 26 and the 7th lens 27, each lens have towards the object side of object space and court
To the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 21 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 22 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 23 have negative refracting power,
Object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 24 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 25 have positive refracting power,
Object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 26 have negative refracting power,
Object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 27 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 27 and imaging surface 29, passes through in addition, the pick-up lens has additionally comprised infrared fileter 28
Infrared fileter 28 is filtered out into the infrared band light in pick-up lens, is avoided generating on Infrared irradiation to sensitive chip and be made an uproar
Sound.Optional optical filter material is glass and does not influence focal length.
It please cooperate referring to following table 2-1, table 2-2 and table 7.Corresponding perturbed field diagram and spherical aberration curve graph are respectively such as
Shown in Fig. 5 and Fig. 6.
Table 2-1
Table 2-2
[embodiment 3]
Referring to FIG. 7, showing the structural schematic diagram of the pick-up lens of embodiment 3.As seen from the figure, the present embodiment camera lens
Head includes the aperture 30 set gradually along optical axis by object side to image side, the first lens 31, the second lens 32, the third lens 33, the
Four lens 34, the 5th lens 35, the 6th lens 36 and the 7th lens 37, each lens have towards the object side of object space and court
To the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 31 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 32 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 33 have negative refracting power,
Object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 34 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 35 have positive refracting power,
Object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 36 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 37 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 37 and imaging surface 39, passes through in addition, the pick-up lens has additionally comprised infrared fileter 38
Infrared fileter 38 is filtered out into the infrared band light in pick-up lens, is avoided generating on Infrared irradiation to sensitive chip and be made an uproar
Sound.Optional optical filter material is glass and does not influence focal length.
It please cooperate referring to following table 3-1, table 3-2 and table 7.Corresponding perturbed field diagram and spherical aberration curve graph are respectively such as
Shown in Fig. 8 and Fig. 9.
Table 3-1
Table 3-2
| Surface | 2 | 3 | 4 | 5 | 6 |
| K | -1.48482E+00 | -4.72088E-02 | -1.60140E+00 | -1.70587E+02 | 1.39417E+02 |
| A4 | -4.98987E-02 | -1.19019E-01 | -4.41738E-02 | -5.95036E-02 | -4.79715E-02 |
| A6 | 7.45351E-02 | 5.06406E-02 | -3.43320E-03 | 1.73712E-02 | 7.20342E-02 |
| A8 | -9.26602E-02 | -5.69437E-02 | 3.08540E-03 | -8.54773E-03 | -5.70503E-02 |
| A10 | 6.00580E-02 | 3.45612E-02 | 5.57305E-04 | 1.65149E-03 | 1.26386E-02 |
| A12 | -1.63270E-02 | -9.56059E-03 | 6.60873E-04 | 2.04448E-05 | -1.14397E-04 |
| A14 | -2.16274E-03 | 7.28596E-05 | 2.37216E-04 | 5.20616E-05 | -3.12866E-05 |
| A16 | 1.39391E-03 | 5.59695E-05 | -4.02897E-04 | 1.39707E-05 | 2.53890E-05 |
| Surface | 7 | 8 | 9 | 10 | 11 |
| K | -1.56162E+02 | -3.30809E+01 | 5.36765E+00 | 1.79775E+02 | -2.04305E-01 |
| A4 | -8.03757E-02 | -1.42214E-01 | -9.09465E-02 | 4.07476E-02 | 4.07085E-02 |
| A6 | 1.10817E-01 | 3.17590E-02 | -1.50391E-02 | -3.39927E-02 | -7.71604E-03 |
| A8 | -8.97620E-02 | -2.15166E-03 | 1.75552E-02 | 9.94760E-03 | 2.16464E-03 |
| A10 | 2.22596E-02 | -1.49070E-04 | -2.59951E-03 | -3.25257E-03 | -9.29457E-04 |
| A12 | -5.53187E-05 | 1.39484E-04 | -1.88717E-04 | 4.24366E-04 | -3.63201E-06 |
| A14 | -2.03065E-04 | 1.82379E-04 | -1.09220E-04 | 5.43612E-05 | 2.10930E-05 |
| A16 | -7.91574E-05 | -4.45724E-05 | 3.48977E-05 | -2.89446E-05 | 1.09324E-05 |
| Surface | 12 | 13 | 14 | 15 | |
| K | -3.53671E+00 | -6.91509E-01 | -3.73326E-01 | -1.44232E+00 | |
| A4 | -4.04693E-02 | -4.97740E-02 | -1.22118E-01 | -1.15292E-01 | |
| A6 | 5.17487E-03 | 9.96002E-04 | 1.83104E-02 | 3.09462E-02 | |
| A8 | -5.98458E-03 | -7.85411E-04 | -1.97537E-04 | -5.43122E-03 | |
| A10 | 1.53577E-03 | 3.26325E-04 | -9.08205E-05 | 6.45704E-04 | |
| A12 | -4.25042E-05 | -4.06992E-06 | -7.38181E-06 | -4.60311E-05 | |
| A14 | -4.70223E-06 | -6.05915E-06 | 1.09389E-06 | 1.47280E-06 | |
| A16 | -2.67230E-06 | 4.03046E-07 | -8.72903E-09 | -5.39223E-09 |
[embodiment 4]
Referring to FIG. 10, showing the structural schematic diagram of the pick-up lens of embodiment 4.As seen from the figure, the present embodiment images
Camera lens includes 40 first lens 41 of aperture set gradually along optical axis by object side to image side, the second lens 42, the third lens 43,
Four lens 44, the 5th lens 45, the 6th lens 46 and the 7th lens 47, each lens have towards the object side of object space and court
To the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 41 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 42 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 43 have negative refracting power,
Object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 44 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 45 have positive refracting power,
Object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 46 have negative refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 47 have positive refracting power,
Object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 47 and imaging surface 49, passes through in addition, the pick-up lens has additionally comprised infrared fileter 48
Infrared fileter 48 is filtered out into the infrared band light in pick-up lens, is avoided generating on Infrared irradiation to sensitive chip and be made an uproar
Sound.Optional optical filter material is glass and does not influence focal length.
It please cooperate referring to following table 4-1, table 4-2 and table 7.Corresponding perturbed field diagram and spherical aberration curve graph are respectively such as
Shown in Figure 11 and Figure 12.
Table 4-1
Table 4-2
[embodiment 5]
Figure 13 is please referred to, the structural schematic diagram of the pick-up lens of embodiment 5 is shown.As seen from the figure, the present embodiment images
Camera lens include the aperture 50 set gradually along optical axis by object side to image side, the first lens 51, the second lens 52, the third lens 53,
4th lens 54, the 5th lens 55, the 6th lens 56 and the 7th lens 57, each lens have towards object space object side and
Towards the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 51 have positive refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 52 have positive refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 53 have negative refracting power,
Its object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 54 have positive refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 55 have positive refracting power,
Its object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 56 have negative refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 57 have negative refracting power,
Its object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 57 and imaging surface 59, passes through in addition, the pick-up lens has additionally comprised infrared fileter 58
Infrared fileter 58 is filtered out into the infrared band light in pick-up lens, is avoided generating on Infrared irradiation to sensitive chip and be made an uproar
Sound.Optional optical filter material is glass and does not influence focal length.
It please cooperate referring to following table 5-1, table 5-2 and table 7.Corresponding perturbed field diagram and spherical aberration curve graph are respectively such as
Shown in Figure 14 and Figure 15.
Table 5-1
Table 5-2
| Surface | 2 | 3 | 4 | 5 | 6 |
| K | -1.07963E+00 | 2.90569E-04 | -8.21679E-01 | 8.18882E+01 | 1.60196E+02 |
| A4 | -3.69784E-02 | -9.96265E-02 | -3.21611E-02 | -6.87341E-02 | -7.87512E-02 |
| A6 | 9.17107E-02 | 4.19387E-02 | -1.08931E-02 | 1.49324E-02 | 7.53168E-02 |
| A8 | -1.04511E-01 | -5.70871E-02 | 1.86863E-03 | -7.01019E-03 | -5.51559E-02 |
| A10 | 5.85427E-02 | 3.43194E-02 | 6.64490E-04 | 1.86450E-03 | 1.41808E-02 |
| A12 | -1.31197E-02 | -9.67305E-03 | -1.74739E-05 | -3.24741E-07 | -2.63184E-05 |
| A14 | -1.67751E-06 | -1.01553E-05 | -7.94417E-06 | 1.69515E-06 | -2.08442E-05 |
| A16 | -3.70956E-06 | -5.79614E-06 | -5.19377E-06 | 7.42584E-07 | -1.27001E-05 |
| Surface | 7 | 8 | 9 | 10 | 11 |
| K | -1.00870E+02 | -3.15370E+00 | 2.33545E+00 | 5.30870E-01 | -7.08179E-01 |
| A4 | -6.41392E-02 | -1.65794E-01 | -9.72645E-02 | 1.32515E-01 | 1.01037E-01 |
| A6 | 1.17447E-01 | 2.94078E-02 | -1.25618E-02 | -3.63585E-02 | -4.32823E-03 |
| A8 | -9.09921E-02 | -4.29119E-04 | 1.64273E-02 | 1.12893E-02 | 2.71625E-03 |
| A10 | 2.14903E-02 | 5.94587E-04 | -2.48410E-03 | -4.21247E-03 | -7.83981E-04 |
| A12 | -9.87395E-05 | -4.92107E-05 | 8.61924E-05 | -8.38716E-05 | -1.19675E-05 |
| A14 | -3.86788E-05 | -4.09932E-05 | 6.51907E-05 | 2.37962E-05 | -1.64967E-06 |
| A16 | 1.68064E-06 | -2.86662E-05 | 3.50103E-05 | 2.89964E-05 | 2.50925E-07 |
| Surface | 12 | 13 | 14 | 15 | |
| K | -2.08874E+01 | -1.01455E+01 | -5.05448E+01 | -2.03733E-01 | |
| A4 | -8.78726E-02 | -1.05347E-01 | -1.01981E-01 | -8.58688E-02 | |
| A6 | -3.56206E-03 | 1.88431E-03 | 1.97674E-02 | 2.75252E-02 | |
| A8 | -6.55895E-03 | 7.44944E-04 | -2.43127E-04 | -5.89190E-03 | |
| A10 | 2.53412E-03 | 4.14303E-04 | -1.11475E-04 | 6.56502E-04 | |
| A12 | 3.60187E-07 | -7.97544E-06 | -9.75600E-06 | -3.92913E-05 | |
| A14 | 6.14828E-06 | -3.20567E-06 | 1.03441E-06 | 1.94286E-06 | |
| A16 | 1.99995E-06 | 1.16129E-06 | -1.36503E-08 | -1.13826E-07 |
[embodiment 6]
Figure 16 is please referred to, the structural schematic diagram of the pick-up lens of embodiment 6 is shown.As seen from the figure, the present embodiment images
Camera lens include the aperture 60 set gradually along optical axis by object side to image side, the first lens 61, the second lens 62, the third lens 63,
4th lens 64, the 5th lens 65, the 6th lens 66 and the 7th lens 67, each lens have towards object space object side and
Towards the image side surface of image space, the object side of each lens and image side surface are aspherical.First lens 61 have negative refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 62 have positive refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.The third lens 63 have negative refracting power,
Its object side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.4th lens 64 have positive refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.5th lens 65 have positive refracting power,
Its object side is concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis.6th lens 66 have negative refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.7th lens 67 have negative refracting power,
Its object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis, and its image side surface includes an at least point of inflexion.
It is placed between the 7th lens 67 and imaging surface 69, passes through in addition, the pick-up lens has additionally comprised infrared fileter 68
Infrared fileter 68 is filtered out into the infrared band light in pick-up lens, is avoided generating on Infrared irradiation to sensitive chip and be made an uproar
Sound.Optional optical filter material is glass and does not influence focal length.
It please cooperate referring to following table 6-1, table 6-2 and table 7.Corresponding perturbed field diagram and spherical aberration curve graph are respectively such as
Shown in Fig. 5 and Fig. 6.
Table 6-1
Table 6-2
To sum up, embodiment 1 to embodiment 6 meets condition shown in table 7 respectively.
Table 7
Correspondingly, the embodiment of the present invention also provides a kind of electronic equipment, including photographic device, the photographic device includes electricity
Sub- photosensitive element and above-described pick-up lens, the electronics photosensitive element are set to the imaging surface of the pick-up lens.
Electronic equipment provided in this embodiment, the pick-up lens that photographic device uses pass through for seven chip lens arrangements
Using reasonable face structure and the optimization range combinations of each optics of lens parameter, can have good image quality,
Wherein existed by rationally limiting the sum of the third lens, thickness of the 4th lens with the third lens image side surface to the 4th lens object side
The ratio of spacing distance on optical axis can make close to object and the lesser lens of effective radius and close to imaging surface and effectively partly
The biggish lens distribution uniform of diameter, is conducive to the collocation between eyeglass.The pick-up lens that the present embodiment electronic equipment uses, tool
There are the characteristics such as large aperture, high pixel, high-resolution, excellent field of view angle, is capable of providing good image quality.
A kind of pick-up lens provided by the present invention and electronic equipment are described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention.It should be pointed out that for those skilled in the art, not departing from this hair
, can be with several improvements and modifications are made to the present invention under the premise of bright principle, these improvement and modification also fall into power of the present invention
In the protection scope that benefit requires.
Claims (10)
1. a kind of pick-up lens, which is characterized in that by object side to image side sequentially include the first lens, the second lens, the third lens,
4th lens, the 5th lens, the 6th lens and the 7th lens, each lens have towards the object side of object space and towards image space
Image side surface, in which:
Second lens and the 5th lens all have positive refracting power, and the third lens and the 6th lens all have
Negative refracting power, first lens, the 4th lens, the 7th lens have positive refracting power or negative refracting power；
The first lens image side surface is concave surface at dipped beam axis, and the third lens object side is concave surface, institute at dipped beam axis
The 5th lens object side is stated at dipped beam axis as concave surface, the 7th lens image side surface is concave surface at dipped beam axis, and described the
Seven lens image side surfaces have an at least point of inflexion；
And meet following condition formulae:
0.1<(CT3+CT4)/T34<5；
Wherein, CT3Indicate the third lens in the thickness on optical axis, CT4Indicate the 4th lens in the thickness on optical axis,
T34Indicate spacing distance of the third lens image side surface to the 4th lens object side on optical axis.
2. pick-up lens according to claim 1, which is characterized in that the second lens object side is convex at dipped beam axis
Face, image side surface are convex surface at dipped beam axis.
3. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: -2.5 < (R41-R42)/
(R41+R42) < 0, wherein R41Indicate the radius of curvature of the 4th lens object side, R42Indicate the 4th lens image side surface
Radius of curvature.
4. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.5 < YC42/YC62<
1.5, wherein YC42Indicate vertical range of the point of inflexion of the 4th lens image side surface to optical axis, YC62Indicate that the described 6th is saturating
Vertical range of the point of inflexion of mirror image side to optical axis.
5. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 1.5 < ALT/EPD <
2.5, wherein ALT indicates the first lens object side to the 7th lens image side surface in the distance on optical axis, EPD expression institute
State the Entry pupil diameters of pick-up lens.
6. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0 < (imgh-f/EPD)/
(imgh+f/EPD) < 0.5, wherein f indicates that the focal length of the pick-up lens, EPD indicate the Entry pupil diameters of the pick-up lens,
Imgh indicates the half of the maximum image height of the pick-up lens.
7. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.2 < YC72/ f < 0.7,
Wherein YC72The point of inflexion of the 7th lens image side surface is indicated to the vertical range of optical axis, f indicates the coke of the pick-up lens
Away from.
8. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: -1.2 < R72/R71< 1,
Middle R72Indicate the radius of curvature of the 7th lens image side surface, R71Indicate the radius of curvature of the 7th lens object side.
9. pick-up lens according to claim 1, which is characterized in that also satisfy the following conditional expression: -2 < f/f7< 1, wherein f
Indicate the focal length of the pick-up lens, f7Indicate the focal length of the 7th lens.
10. a kind of electronic equipment, which is characterized in that including photographic device, the photographic device includes electronics photosensitive element and power
Benefit requires the described in any item pick-up lens of 1-9, and the electronics photosensitive element is set to the imaging surface of the pick-up lens.
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| CN110389426A (en) * | 2019-06-30 | 2019-10-29 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN112346208A (en) * | 2019-08-09 | 2021-02-09 | 华为技术有限公司 | Large-aperture lens and terminal equipment |
| WO2022061904A1 (en) * | 2020-09-28 | 2022-03-31 | 欧菲光集团股份有限公司 | Optical system, camera module, and terminal device |
| WO2022183509A1 (en) * | 2021-03-05 | 2022-09-09 | 北京小米移动软件有限公司 | Photographing optical system and optical photographing apparatus |
| CN117310945A (en) * | 2023-11-30 | 2023-12-29 | 江西联创电子有限公司 | Optical lens |
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