CN110187483A - A kind of wide-angle lens and electronic equipment - Google Patents
A kind of wide-angle lens and electronic equipment Download PDFInfo
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- CN110187483A CN110187483A CN201910476917.1A CN201910476917A CN110187483A CN 110187483 A CN110187483 A CN 110187483A CN 201910476917 A CN201910476917 A CN 201910476917A CN 110187483 A CN110187483 A CN 110187483A
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- angle
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Abstract
The invention discloses a kind of wide-angle lens, first lens have negative refracting power, its object side is concave surface at dipped beam axis, second lens have positive refracting power, its object side and image side surface are convex surface, the third lens have negative refracting power, 4th lens have positive refracting power, 5th lens have negative refracting power, its object side is convex surface at dipped beam axis, 6th lens have negative refracting power, its image side surface is concave surface at dipped beam axis and its image side surface has an at least point of inflexion, this wide-angle lens is by each lens using the optimization range combinations of reasonable face shape and each optics of lens parameter, can have good image quality, and by selecting suitable material to make the second lens and the third lens, camera lens can be satisfactorily corrected from axis to the chromatic aberation outside axis.Wide-angle lens of the present invention is light and short, and aberration can be satisfactorily corrected, and can have high pixel, high-resolution and excellent image quality.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 wide-angle lens.The invention further relates to one
Kind electronic equipment.
Background technique
With the very fast development of electronic technology, the electronic equipment of movable light has obtained rapid proliferation, such as intelligent hand
Machine, tablet computer, automobile data recorder and moving camera etc., this has been pushed simultaneously using photographing module phase on an electronic device
Pass technology flourishes.With progressing greatly for semiconductor fabrication process technology, realize that the Pixel Dimensions of sensor devices reduce, phase
It answers, pick-up lens gradually develops toward high pixel neighborhoods, and the requirement to its image quality also increasingly improves.In some special scenes
In it is also desirable to have biggish field angle, such as preposition self-timer, game machine, panorama camera, big wide-angle can make the field taken
Scape is more broad.Therefore it provides a kind of small and light, big field angle and the pick-up lens with excellent image quality,
It is the urgent need of current this field.
Summary of the invention
In view of the above, the present invention provides a kind of wide-angle lens, light and short, and aberration can be satisfactorily corrected, have
High pixel, high-resolution and excellent image quality, can satisfy 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 wide-angle lens, by object side to image side sequentially include the first lens, the second lens, the third lens, the 4th lens,
5th lens and the 6th lens, each lens have towards the object side of object space and towards the image side surface of image space, each lens
Object side and image side surface are aspherical, in which: first lens have negative refracting power, and object side is recessed at dipped beam axis
Face, second lens have positive refracting power, and object side and image side surface are convex surface, and the third lens have negative flexion
Power, the 4th lens have positive refracting power, and the 5th lens have negative refracting power, and object side is convex at dipped beam axis
Face, the 6th lens have negative refracting power, and image side surface is concave surface at dipped beam axis, and its image side surface has an at least contrary flexure
Point；And it satisfies the following conditional expression:
1.1<CT2/ET2< 1.8, R11< 0, R51> 0, V2> 50, V3<30；
Wherein, CT2Indicate thickness of second lens on optical axis, ET2Indicate the edge thickness of second lens,
R11Indicate the radius of curvature of the first lens object side, R51Indicate the radius of curvature of the 5th lens object side, V2It indicates
The abbe number of second lens, V3Indicate the abbe number of the third lens.
Preferably, the object side of the 4th lens is concave surface at dipped beam axis, and its object side is by dipped beam axis to side
There are the variations that concave surface switchs to convex surface for edge.
Preferably, also satisfy the following conditional expression: FOV >=119 °, wherein FOV indicates the maximum field of view of the wide-angle lens
Angle.
Preferably, it also satisfies the following conditional expression: 1 < (R61+R62)/(R61-R62)≤5, wherein R61Indicate the 6th lens
The radius of curvature of object side, R62Indicate the radius of curvature of the 6th lens image side surface.
Preferably, also satisfy the following conditional expression: 0.2 < BL/f≤0.6, wherein BL indicates that the 6th lens image side surface arrives
For imaging surface in the distance on optical axis, f indicates the focal length of the wide-angle lens.
Preferably, it also satisfies the following conditional expression: 0.5≤Yc52/Yc62< 1.5, wherein Yc52Indicate the 5th 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, it also satisfies the following conditional expression: 0.4≤SAG32/CT3< 1.1, wherein SAG32Indicate the third lens picture
Horizontal displacement distance of the intersection point of side and optical axis to the maximum effective radius position of the third lens image side surface on optical axis,
CT3Indicate thickness of the third lens on optical axis.
Preferably, it also satisfies the following conditional expression: | f/f1| < 1, wherein f indicates the focal length of the wide-angle lens, f1Indicate institute
State the focal length of the first lens.
Preferably, it also satisfies the following conditional expression: 0.3 < Yc62/ ImgH < 0.6, wherein Yc62Indicate the 6th lens image side
For the point of inflexion in face to the vertical range of optical axis, ImgH indicates effective pixel area diagonal line length on the imaging surface of the wide-angle lens
Half.
A kind of electronic equipment, including photographic device, the photographic device include electronics photosensitive element and above-described wide
Angle mirror head, the electronics photosensitive element are set to the imaging surface of the wide-angle lens.
As shown from the above technical solution, wide-angle lens provided by the present invention includes be set in sequence by object side to image side
One lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens, object space light successively pass through each lens,
It is imaged on the imaging surface of the 6th lens image side.This wide-angle lens is six chip lens arrangements, by each lens using conjunction
The optimization range combinations of the face shape of reason and each optics of lens parameter, can have good image quality, wherein passing through conjunction
The ratio of reason configuration the second lens center thickness and edge thickness facilitates the production molding of the second lens, promotes the system of camera lens
Make qualification rate.Also, this camera lens is by selecting suitable material to make the second lens with positive refracting power and having negative flexion
Camera lens can be satisfactorily corrected from axis to the chromatic aberation outside axis in the third lens of power.Therefore wide-angle lens of the present invention is frivolous short
It is small, aberration can be satisfactorily corrected, can have high pixel, high-resolution and excellent image quality, can satisfy to apply and want
It asks.
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 wide-angle lens that the embodiment of the present invention 1 provides；
Fig. 2 (a) and Fig. 2 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 1；
Fig. 3 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 1；
Fig. 4 is a kind of schematic diagram for wide-angle lens that the embodiment of the present invention 2 provides；
Fig. 5 (a) and Fig. 5 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 2；
Fig. 6 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 2；
Fig. 7 is a kind of schematic diagram for wide-angle lens that the embodiment of the present invention 3 provides；
Fig. 8 (a) and Fig. 8 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 3；
Fig. 9 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 3；
Figure 10 is a kind of schematic diagram for wide-angle lens that the embodiment of the present invention 4 provides；
Figure 11 (a) and Figure 11 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 4；
Figure 12 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 4；
Figure 13 is a kind of schematic diagram for wide-angle lens that the embodiment of the present invention 5 provides；
Figure 14 (a) and Figure 14 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 5；
Figure 15 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 5；
Figure 16 is a kind of schematic diagram for wide-angle lens that the embodiment of the present invention 6 provides；
Figure 17 (a) and Figure 17 (b) is respectively astigmatism curve graph, the distortion curve of wide-angle lens in the embodiment of the present invention 6；
Figure 18 is the spherical aberration curve graph of wide-angle lens in the embodiment of the present invention 6；
Figure 19 is painted SAG in the wide-angle lens according to the embodiment of the present invention 132Schematic diagram；
Figure 20 is painted Yc in the wide-angle lens according to the embodiment of the present invention 152Schematic diagram；
Figure 21 is painted Yc in the wide-angle lens according to the embodiment of the present invention 162Schematic 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 wide-angle lens, sequentially includes that the first lens, the second lens, third are saturating by object side to image side
Mirror, the 4th lens, the 5th lens and the 6th lens, each lens have towards the object side of object space and towards the image side of image space
Face.Further include one be located at the 6th lens be set between the 6th lens and imaging surface towards the imaging surface of image space side and one
Optical filter, which does not influence the focal length of wide-angle lens.
First lens have negative refracting power, help to expand field of view angle and control the total length of camera lens, with effective
Maintain its miniaturization.First lens object side is concave surface at dipped beam axis, and its object side may be present by dipped beam axis to edge
Concave surface switchs to the variation on convex surface.The image side surface of first lens can be concave surface at dipped beam axis.Whereby, to the refraction of incident ray compared with
To mitigate, be conducive to the astigmatism for correcting camera lens.
Second lens have positive refracting power, and object side and image side surface are convex surface, are facilitated camera lens converged light
The ability of line concentrates on the second lens, so that can increase light enters the range of camera lens to expand field of view angle.
The third lens have negative refracting power, facilitate the lens error correction of camera lens.The object side of the third lens is in dipped beam
It can be convex surface at axis, image side surface can be concave surface at dipped beam axis, and the principal point of camera lens can be made further from imaging surface, be conducive to shorten
The total length of camera lens, to maintain the miniaturization of camera lens.
4th lens have positive refracting power, and object side can be concave surface at dipped beam axis, and its object side is by dipped beam
The variation that concave surface switchs to convex surface may be present to edge at axis.The image side surface of 4th lens can be convex surface, help to reduce camera lens
Susceptibility and amendment astigmatism, to promote image quality.
5th lens have negative refracting power, and object side is convex surface at dipped beam axis, can modified off-axis aberration, promotion
Image periphery illumination avoids dark angle from generating.The image side surface of 5th lens can be concave surface at dipped beam axis, help avoid bending in this way
Power concentrations are rolled in the 5th lens, and can reduce lens perimeter and because curvature is excessive lens are excessively bent, and then are reduced
Form bad problem.
6th lens have negative refracting power, and image side surface is concave surface at dipped beam axis, and its image side surface has extremely
Few point of inflexion, facilitates to make the principal point of camera lens far from image side end in this way, and then effectively shorten the overall length of this wide-angle lens
Degree, be conducive to the miniaturization of wide-angle lens, further can modified off-axis aberration to promote periphery image quality.
This wide-angle lens uses the optimization range combinations of reasonable face shape and each optics of lens parameter by each lens,
And meet R11< 0, R51> 0, R11Indicate the radius of curvature of the first lens object side, R51Indicate the curvature half of the 5th lens object side
Diameter can have good image quality.Wherein, by the ratio of reasonable disposition the second lens center thickness and edge thickness,
Make 1.1 < CT of satisfaction2/ET2< 1.8, CT2Indicate thickness of second lens on optical axis, ET2Indicate the edge thickness of the second lens,
The production molding for facilitating the second lens, promotes the manufacture qualification rate of camera lens.Also, this camera lens is by selecting suitable material system
Make the second lens with positive refracting power and the third lens with negative refracting power, meets V2> 50, V3< 30, V2Indicate that second is saturating
The abbe number of mirror, V3The abbe number for indicating the third lens, can be satisfactorily corrected camera lens from axis to the chromatic aberation outside axis.
Therefore six chip wide-angle lens of the invention are light and short, and aberration can be satisfactorily corrected, can have high pixel, high-resolution and
Excellent image quality, can satisfy application requirement.
Preferably, this wide-angle lens also satisfies the following conditional expression: FOV >=119 °, and wherein FOV indicates the wide-angle lens
Maximum field of view angle.Meeting this condition can provide big field angle, to obtain required imaging range appropriate.Preferably meet FOV >=
125°。
Preferably, this wide-angle lens also satisfies the following conditional expression: 1 < (R61+R62)/(R61-R62)≤5, wherein R61Indicate institute
State the radius of curvature of the 6th lens object side, R62Indicate the radius of curvature of the 6th lens image side surface.By to the 6th lens
The configuration that each surface curvature is reasonable, optimizes, can further correct astigmatism, the curvature of field, color difference or the spherical aberration of camera lens.
Preferably, this wide-angle lens also satisfies the following conditional expression: 0.2 < BL/f≤0.6, and wherein BL indicates that the described 6th is saturating
To imaging surface in the distance on optical axis, f indicates the focal length of the wide-angle lens for mirror image side.BL/f value is lower than upper limit value 0.6, energy
Enough guarantee rear lens focus, is conducive to improve space and craftsmanship；BL/f value is higher than lower limit value 0.2, can prevent the folding of each lens
The rate of penetrating is become too strong.
Preferably, this wide-angle lens also satisfies the following conditional expression: 0.5≤Yc52/Yc62< 1.5, wherein Yc52Indicate described
Vertical range of the point of inflexion of five 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 camera lens, and deflection of light is made to become
In mitigation, and the susceptibility of camera lens can be effectively reduced, while can effectively correct coma, distortion and the color difference of camera lens.
Preferably, this wide-angle lens also satisfies the following conditional expression: 0.4≤SAG32/CT3< 1.1, wherein SAG32Described in expression
Water of the intersection point of the third lens image side surface and optical axis to the maximum effective radius position of the third lens image side surface on optical axis
Flat shift length, CT3Indicate thickness of the third lens on optical axis.By the shape for controlling the third lens center and periphery
Variation is conducive to processing and manufacturing and assembling.
Preferably, this wide-angle lens also satisfies the following conditional expression: | f/f1| < 1, wherein f indicates the coke of the wide-angle lens
Away from f1Indicate the focal length of first lens.Pass through total effective focal length of reasonable distribution camera lens and the effective focal length of the first lens
Ratio, can effectively distribute focal power, reduce the sensibility of camera lens.
Preferably, this wide-angle lens also satisfies the following conditional expression: 0.3 < Yc62/ ImgH < 0.6, wherein Yc62Indicate described
For the point of inflexion of six lens image side surfaces to the vertical range of optical axis, ImgH indicates effective pixel region on the imaging surface of the wide-angle lens
The half of domain diagonal line length.Meet this to be conducive to correct incidence angle of the chief ray in image planes, improves the matching with sensitive chip
Property, and guarantee the brightness uniformity of entire image planes.
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 wide-angle 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 camera lens, in the case where being from the object side to image side from left to right, lens object side is convex
Face refers to that section is done at lens object side any point Guo Mianshang, and total surface is on the right of section, and radius of curvature is positive, on the contrary
Object side is then concave surface, and radius of curvature is negative.Lens image side surface is that convex surface refers to that lens image side surface is crossed any point on face and done
Section, total surface are 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
Section, the existing part on the section left side in surface are done in any point on lens object side or image side surface, and have on the right of section
Part, 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 is above-mentioned.
In addition, referring to the region near optical axis at dipped beam axis.In wide-angle lens of the present invention, if lens surface is convex surface and does not define this
When the position of convex surface, 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 the concave surface
When position, then it represents that the concave surface can be located at lens surface dipped beam axis.
In wide-angle 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, this wide-angle lens arbitrary two
Interval can be all had between a adjacent lens, is conducive to the assembling of lens, to promote manufacturing yield.
In addition, an at least diaphragm settable on demand helps to be promoted in wide-angle lens of the present invention to reduce stray light
Image quality.In the present invention, aperture configuration can be in set aperture, i.e. aperture is set between the first lens and imaging surface, is had
The field angle for helping expansion system makes the advantage with wide-angle lens.
Wide-angle 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 wide-angle lens of embodiment 1.As seen from the figure, the present embodiment wide-angle lens
Head includes the first lens 11 set gradually by object side to image side, aperture 10, the second lens 12, the third lens 13, the 4th lens
14, the 5th lens 15 and the 6th lens 16, each lens have towards the object side of object space and towards the image side surface of image space, respectively
The object side of lens and image side surface are aspherical.First lens 11 have negative refracting power, and are plastic material, object side
Face is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 12 have positive refracting power, and are modeling
Expect material, 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Described
Four lens 14 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface.5th lens 15 have negative refracting power, and are plastic material, and object side is convex surface, picture at dipped beam axis
Side is concave surface at dipped beam axis.6th lens 16 have negative refracting power, and are plastic material, and object side is in dipped beam axis
Place is convex surface, and image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this wide-angle
Camera lens has additionally comprised infrared fileter 17 and has been placed between the 6th lens 16 and imaging surface 18, filters out entrance by infrared fileter 17
Infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filter material
Focal length is not influenced for glass and.
The value that the present embodiment wide-angle lens meets conditional is as shown in table 7.In addition, Figure 19, Figure 20 and Figure 21 are please referred to, the
Level of the intersection point of three lens, 13 image side surface and optical axis to the maximum effective radius position of 13 image side surface of the third lens on optical axis
Shift length SAG32As shown in figure 19, the point of inflexion 1521 of 15 image side surface of the 5th lens arrives the vertical range Yc of optical axis52Such as Figure 20
Shown, the point of inflexion 1621 of 16 image side surface of the 6th lens arrives the vertical range Yc of optical axis62As 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 wide-angle lens, Fno are f-number, and FOV is maximum field of view angle, and surface 0-16 is sequentially indicated by each of object side to image side
Surface.Wherein surface 1-13 successively indicates the first lens object side, the first lens image side surface, aperture, 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 and the 6th lens image side surface.
Table 1-1
Each lens use aspheric design in this wide-angle 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 vertical range of point and optical axis in aspheric curve；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-A20 respectively indicate lens surface 4-20 rank asphericity coefficient.The astigmatism curve graph of the present embodiment wide-angle lens, distortion
Curve graph and spherical aberration curve graph are respectively as shown in Fig. 2 (a), Fig. 2 (b) and Fig. 3, wherein in astigmatism curve graph and distortion curve
Wavelength is 0.555 μm, a length of 0.470 μm, 0.510 μm, 0.555 μm, 0.610 μm and 0.650 μm of spherical aberration curve graph medium wave.This
Outside, following embodiment table is wide-angle lens schematic diagram, astigmatism curve graph, distortion curve and the spherical aberration of corresponding each embodiment
Curve graph, data define all identical as the definition of the table 1-1 of embodiment 1 and table 1-2 in table, are not added repeat below.
Table 1-2
[embodiment 2]
Referring to FIG. 4, showing the structural schematic diagram of the wide-angle lens of embodiment 2.As seen from the figure, the present embodiment wide-angle lens
Head includes the first lens 21 set gradually by object side to image side, aperture 20, the second lens 22, the third lens 23, the 4th lens
24, the 5th lens 25 and the 6th lens 26, each lens have towards the object side of object space and towards the image side surface of image space, respectively
The object side of lens and image side surface are aspherical.First lens 21 have negative refracting power, and are plastic material, object side
Face is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 22 have positive refracting power, and are modeling
Expect material, 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Described
Four lens 24 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface.5th lens 25 have negative refracting power, and are plastic material, and object side is convex surface, picture at dipped beam axis
Side is concave surface at dipped beam axis.6th lens 26 have negative refracting power, and are plastic material, and object side is in dipped beam axis
Place is convex surface, and image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this wide-angle
Camera lens has additionally comprised infrared fileter 27 and has been placed between the 6th lens 26 and imaging surface 28, filters out entrance by infrared fileter 27
Infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filter material
Focal length is not influenced for glass and.
It please cooperate referring to following table 2-1, table 2-2 and table 7.Corresponding astigmatism curve graph, distortion curve and spherical aberration
Curve graph is respectively as shown in Fig. 5 (a), Fig. 5 (b) and Fig. 6.
Table 2-1
Table 2-2
[embodiment 3]
Referring to FIG. 7, showing the structural schematic diagram of the wide-angle lens of embodiment 3.As seen from the figure, the present embodiment wide-angle lens
Head includes the first lens 31 set gradually by object side to image side, aperture 30, the second lens 32, the third lens 33, the 4th lens
34, the 5th lens 35 and the 6th lens 36, each lens have towards the object side of object space and towards the image side surface of image space, respectively
The object side of lens and image side surface are aspherical.First lens 31 have negative refracting power, and are plastic material, object side
Face is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 32 have positive refracting power, and are modeling
Expect material, 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Described
Four lens 34 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface.5th lens 35 have negative refracting power, and are plastic material, and object side is convex surface, picture at dipped beam axis
Side is concave surface at dipped beam axis.6th lens 36 have negative refracting power, and are plastic material, and object side is in dipped beam axis
Place is convex surface, and image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this wide-angle
Camera lens has additionally comprised infrared fileter 37 and has been placed between the 6th lens 36 and imaging surface 38, filters out entrance by infrared fileter 37
Infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filter material
Focal length is not influenced for glass and.
It please cooperate referring to following table 3-1, table 3-2 and table 7.Corresponding astigmatism curve graph, distortion curve and spherical aberration
Curve graph is respectively as shown in Fig. 8 (a), Fig. 8 (b) and Fig. 9.
Table 3-1
Table 3-2
[embodiment 4]
Referring to FIG. 10, showing the structural schematic diagram of the wide-angle lens of embodiment 4.As seen from the figure, the present embodiment wide-angle
Camera lens includes that the first lens 41 set gradually by object side to image side, aperture 40, the second lens 42, the third lens the 43, the 4th are saturating
Mirror 44, the 5th lens 45 and the 6th lens 46, each lens have towards the object side of object space and towards the image side surface of image space,
The object side of each lens and image side surface are aspherical.First lens 41 have negative refracting power, and are plastic material, object
Side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 42 have positive refracting power, and are
Plastic material, object side are 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.It is described
4th lens 44 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is in dipped beam axis
Place is convex surface.5th lens 45 have negative refracting power, and are plastic material, and object side is convex surface at dipped beam axis,
Image side surface is concave surface at dipped beam axis.6th lens 46 have negative refracting power, and are plastic material, and object side is in dipped beam
It is convex surface at axis, image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this is wide
Angle mirror head has additionally comprised infrared fileter 47 and has been placed between the 6th lens 46 and imaging surface 48, by infrared fileter 47 filter out into
Enter the infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filtering sheet material
Matter is glass and does not influence focal length.
It please cooperate referring to following table 4-1, table 4-4 and table 7.Corresponding astigmatism curve graph, distortion curve and spherical aberration
Curve graph is respectively as shown in Figure 11 (a), Figure 11 (b) and Figure 12.
Table 4-1
Table 4-2
[embodiment 5]
Figure 13 is please referred to, the structural schematic diagram of the wide-angle lens of embodiment 5 is shown.As seen from the figure, the present embodiment wide-angle
Camera lens includes that the first lens 51 set gradually by object side to image side, aperture 50, the second lens 52, the third lens the 53, the 4th are saturating
Mirror 54, the 5th lens 55 and the 6th lens 56, each lens have towards the object side of object space 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 negative refracting power, and are plastic material, object
Side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 52 have positive refracting power, and are
Plastic material, object side are 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.It is described
4th lens 54 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is in dipped beam axis
Place is convex surface.5th lens 55 have negative refracting power, and are plastic material, and object side is convex surface at dipped beam axis,
Image side surface is concave surface at dipped beam axis.6th lens 56 have negative refracting power, and are plastic material, and object side is in dipped beam
It is convex surface at axis, image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this is wide
Angle mirror head has additionally comprised infrared fileter 57 and has been placed between the 6th lens 56 and imaging surface 58, by infrared fileter 57 filter out into
Enter the infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filtering sheet material
Matter is glass and does not influence focal length.
It please cooperate referring to following table 5-1, table 5-5 and table 7.Corresponding astigmatism curve graph, distortion curve and spherical aberration
Curve graph is respectively as shown in Figure 14 (a), Figure 14 (b) and Figure 15.
Table 5-1
Table 5-2
[embodiment 6]
Figure 16 is please referred to, the structural schematic diagram of the wide-angle lens of embodiment 6 is shown.As seen from the figure, the present embodiment wide-angle
Camera lens includes that the first lens 61 set gradually by object side to image side, aperture 60, the second lens 62, the third lens the 63, the 4th are saturating
Mirror 64, the 5th lens 65 and the 6th lens 66, each lens have towards the object side of object space 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, and are plastic material, object
Side is concave surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.Second lens 62 have positive refracting power, and are
Plastic material, object side are 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, and be plastic material, object side is convex surface at dipped beam axis, and image side surface is concave surface at dipped beam axis.It is described
4th lens 64 have positive refracting power, and are plastic material, and object side is concave surface at dipped beam axis, and image side surface is in dipped beam axis
Place is convex surface.5th lens 65 have negative refracting power, and are plastic material, and object side is convex surface at dipped beam axis,
Image side surface is concave surface at dipped beam axis.6th lens 66 have negative refracting power, and are plastic material, and object side is in dipped beam
It is convex surface at axis, image side surface is concave surface at dipped beam axis, and its image side surface has at least one point of inflexion.In addition, this is wide
Angle mirror head has additionally comprised infrared fileter 67 and has been placed between the 6th lens 66 and imaging surface 68, by infrared fileter 67 filter out into
Enter the infrared band light in optical lens group, avoids generating noise on Infrared irradiation to sensitive chip.Optional optical filtering sheet material
Matter is glass and does not influence focal length.
It please cooperate referring to following table 6-1, table 6-6 and table 7.Corresponding astigmatism curve graph, distortion curve and spherical aberration
Curve graph is respectively as shown in Figure 17 (a), Figure 17 (b) and Figure 18.
Table 6-1
Table 6-2
To sum up, embodiment 1 to embodiment 6 meets relationship 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 wide-angle lens, the electronics photosensitive element are set to the imaging surface of the wide-angle lens.
Electronic equipment provided in this embodiment, the wide-angle lens that photographic device uses pass through for six chip lens arrangements
Each lens can have good imaging product using the optimization range combinations of reasonable face shape and each optics of lens parameter
Matter facilitates the production molding of the second lens wherein passing through the ratio of reasonable disposition the second lens center thickness and edge thickness,
Promoted camera lens manufacture qualification rate, and this camera lens by select suitable material production have positive refracting power the second lens and
Camera lens can be satisfactorily corrected from axis to the chromatic aberation outside axis in the third lens with negative refracting power, therefore this wide-angle lens
It is light and short, aberration can be satisfactorily corrected, can have high pixel, high-resolution and excellent image quality, can satisfy
Application requirement.
Claims (10)
1. a kind of wide-angle 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 and the 6th lens, each lens have towards the object side of object space and towards the image side surface of image space,
The object side of each lens and image side surface are aspherical, in which: first lens have negative refracting power, and object side is in dipped beam
It is concave surface at axis, second lens have positive refracting power, and object side and image side surface are convex surface, and the third lens have
Negative refracting power, the 4th lens have positive refracting power, and the 5th lens have negative refracting power, and object side is at dipped beam axis
For convex surface, the 6th lens have negative refracting power, and image side surface is concave surface at dipped beam axis, and its image side surface has at least one
The point of inflexion；And it satisfies the following conditional expression:
1.1<CT2/ET2< 1.8, R11< 0, R51> 0, V2> 50, V3<30；
Wherein, CT2Indicate thickness of second lens on optical axis, ET2Indicate the edge thickness of second lens, R11Table
Show the radius of curvature of the first lens object side, R51Indicate the radius of curvature of the 5th lens object side, V2Described in expression
The abbe number of second lens, V3Indicate the abbe number of the third lens.
2. wide-angle lens according to claim 1, which is characterized in that the object side of the 4th lens is at dipped beam axis
Concave surface, and by dipped beam axis to edge, there are the variations that concave surface switchs to convex surface for its object side.
3. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: FOV >=119 °, wherein
FOV indicates the maximum field of view angle of the wide-angle lens.
4. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 1 < (R61+R62)/(R61-
R62)≤5, wherein R61Indicate the radius of curvature of the 6th lens object side, R62Indicate the curvature of the 6th lens image side surface
Radius.
5. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.2 < BL/f≤0.6,
Wherein BL indicate the 6th lens image side surface to imaging surface in the distance on optical axis, f indicates the focal length of the wide-angle lens.
6. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.5≤Yc52/Yc62<
1.5, wherein Yc52Indicate vertical range of the point of inflexion of the 5th 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.
7. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.4≤SAG32/CT3<
1.1, wherein SAG32Indicate that the intersection point of the third lens image side surface and optical axis is effective to the maximum of the third lens image side surface
Horizontal displacement distance of the radial location on optical axis, CT3Indicate thickness of the third lens on optical axis.
8. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: | f/f1| < 1, wherein f table
Show the focal length of the wide-angle lens, f1Indicate the focal length of first lens.
9. wide-angle lens according to claim 1, which is characterized in that also satisfy the following conditional expression: 0.3 < Yc62/ImgH<
0.6, wherein Yc62Indicate the point of inflexion of the 6th lens image side surface to the vertical range of optical axis, the ImgH expression wide-angle lens
The half of effective pixel area diagonal line length on the imaging surface of head.
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 wide-angle lens of 1-9, and the electronics photosensitive element is set to the imaging surface of the wide-angle lens.
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| CN201910476917.1A CN110187483B (en) | 2019-06-03 | 2019-06-03 | Wide-angle lens and electronic equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128275A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN113866936A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Optical lens, camera module and electronic equipment |
| CN114185153A (en) * | 2021-12-10 | 2022-03-15 | 广东旭业光电科技股份有限公司 | Wide-angle optical lens and electronic equipment |
| CN114460724A (en) * | 2021-12-30 | 2022-05-10 | 福建福光天瞳光学有限公司 | Short-distance wide-angle high-definition imaging lens |
| CN115032767A (en) * | 2019-11-21 | 2022-09-09 | 三星电机株式会社 | Optical imaging system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152924A (en) * | 2018-01-09 | 2018-06-12 | 广东旭业光电科技股份有限公司 | A kind of optical camera |
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2019
- 2019-06-03 CN CN201910476917.1A patent/CN110187483B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152924A (en) * | 2018-01-09 | 2018-06-12 | 广东旭业光电科技股份有限公司 | A kind of optical camera |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032767A (en) * | 2019-11-21 | 2022-09-09 | 三星电机株式会社 | Optical imaging system |
| WO2021128275A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| CN113866936A (en) * | 2020-06-30 | 2021-12-31 | 华为技术有限公司 | Optical lens, camera module and electronic equipment |
| WO2022001589A1 (en) * | 2020-06-30 | 2022-01-06 | 华为技术有限公司 | Optical lens, camera module, and electronic device |
| CN114185153A (en) * | 2021-12-10 | 2022-03-15 | 广东旭业光电科技股份有限公司 | Wide-angle optical lens and electronic equipment |
| CN114185153B (en) * | 2021-12-10 | 2024-03-15 | 广东旭业光电科技股份有限公司 | Wide-angle optical lens and electronic equipment |
| CN114460724A (en) * | 2021-12-30 | 2022-05-10 | 福建福光天瞳光学有限公司 | Short-distance wide-angle high-definition imaging lens |
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| CN110187483B (en) | 2021-07-13 |
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