CN109581631A - Imaging lens - Google Patents
Imaging lens Download PDFInfo
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- CN109581631A CN109581631A CN201910054177.2A CN201910054177A CN109581631A CN 109581631 A CN109581631 A CN 109581631A CN 201910054177 A CN201910054177 A CN 201910054177A CN 109581631 A CN109581631 A CN 109581631A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 295
- 230000003287 optical effect Effects 0.000 claims abstract description 71
- 239000000571 coke Substances 0.000 claims abstract description 64
- 210000001747 pupil Anatomy 0.000 claims abstract description 12
- 238000010586 diagram Methods 0.000 description 18
- 230000004075 alteration Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 241000700608 Sagitta Species 0.000 description 8
- 201000009310 astigmatism Diseases 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
This application discloses a kind of imaging lens, which sequentially includes first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens by object side to image side along optical axis.Wherein, the first lens have positive light coke；8th lens have negative power；At least one lens of first lens into the 8th lens have non-rotationally-symmetric aspherical；The Entry pupil diameters EPDx of the X-direction of the effective focal length fx and imaging lens of the X-direction of imaging lens meets fx/EPDx < 2.0；And the Entry pupil diameters EPDy of the Y direction of the effective focal length fy and imaging lens of the Y direction of imaging lens meets fy/EPDy < 2.0.
Description
Technical field
This application involves a kind of imaging lens, more particularly, to a kind of imaging lens including eight lens.
Background technique
In recent years, as portable electronic product such as mobile phone, computer and plate etc. quickly update, market is to these productions
The pick-up lens of product requires also to tend to diversification.Other than excellent image quality, also require camera lens that there is frivolous, high-resolution
The characteristics such as rate and large aperture.
The camera lens for being currently applied to the portable electronic products such as mobile phone mostly uses eight slice structures, and eyeglass face type is mostly
Symmetrically (axial symmetry) it is aspherical.The aspherical curve that can be regarded as in meridional plane of this kind of rotational symmetry around
360 ° of optical axis rotation and formed, therefore its only in meridional plane have sufficient freedom degree, can not well to axis outside
Aberration is corrected.
Summary of the invention
This application provides be applicable to portable electronic product, can at least solve or part solve it is in the prior art
The imaging lens of at least one above-mentioned disadvantage, such as the large aperture imaging lens suitable for portable electronic product.
On the one hand, this application provides such a imaging lens, the imaging lens along optical axis by object side to image side according to
Sequence includes first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th
Lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to the 8th
At least one lens in lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length fx of the X-direction of imaging lens
Fx/EPDx < 2.0 can be met with the Entry pupil diameters EPDx of the X-direction of imaging lens；And the Y direction of imaging lens has
The Entry pupil diameters EPDy of the Y direction of effect focal length fy and imaging lens can meet fy/EPDy < 2.0.
In one embodiment, the object side of the first lens is convex surface, and image side surface is concave surface；The object side of second lens
For convex surface；And the 8th lens image side surface be concave surface.Optionally, the effective focal length fx of the X-direction of imaging lens, first thoroughly
The radius of curvature R 2 of the image side surface of the radius of curvature R 1 and the first lens of the object side of mirror can meet 0.4 < fx/ (R1+R2) <
0.8.Optionally, the effective focal length fy of the Y direction of imaging lens, the radius of curvature R 3 of the object side of the second lens and the 8th are saturating
The radius of curvature R 16 of the image side surface of mirror can meet 0.3 < fy/ (R3+R16) < 0.9.
In one embodiment, the effective focal length f8 of the 8th lens and the effective focal length f1 of the first lens can meet -1.7
< f8/f1 < -0.3.
In one embodiment, the Y direction of the effective focal length fx and imaging lens of the X-direction of imaging lens has
Effect focal length fy can meet 0.8 < fx/fy < 1.2.
In one embodiment, the effective focal length fx of the X-direction of imaging lens, the Y direction of imaging lens have
Effect focal length fy, the effective focal length f3 of the third lens and the effective focal length f6 of the 6th lens can meet -1.7 < (fx+fy)/(f3-
F6) 1.8 <.
In one embodiment, center thickness CT6 of the edge thickness ET6 and the 6th lens of the 6th lens on optical axis
0.5 < ET6/CT6 < 1.1 can be met.
In one embodiment, the effective focal length fx of the X-direction of imaging lens and having for the X-direction of the first lens
Effect focal length f1x can meet 1 < f1x/fx < 1.8.
In one embodiment, rise (SAG2) v at the maximum caliber of the X-direction of the object side of the first lens,
Rise (SAG2) d's and imaging lens at the maximum caliber in the angular bisector direction of the X-axis and Y-axis of the object side of the first lens
The central wavelength lambda of work can meet | λ/((SAG2) d- (SAG2) v)) |≤2.3.
In one embodiment, the object side of the first lens to imaging lens distance TTL of the imaging surface on optical axis
TTL/ImgH < 1.65 can be met with the half ImgH of effective pixel area diagonal line length on the imaging surface of imaging lens.
In one embodiment, the full filed angle FOV of imaging lens can meet 70 ° of 85 ° of < FOV <.
In one embodiment, imaging lens further include diaphragm, and the imaging surface of diaphragm to imaging lens is on optical axis
The imaging surface of distance SL and the object side of the first lens to imaging lens distance TTL on optical axis can meet 0.9 < SL/TTL
< 1.1.
On the other hand, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length f8 and first of the 8th lens
The effective focal length f1 of lens can meet -1.7 < f8/f1 < -0.3.
In one embodiment, the Y direction of the effective focal length fx and imaging lens of the X-direction of imaging lens has
Effect focal length fy can meet 0.8 < fx/fy < 1.2.Optionally, the effective focal length fx and imaging lens of the X-direction of imaging lens
The Entry pupil diameters EPDx of X-direction can meet fx/EPDx < 2.0；And the effective focal length fy of the Y direction of imaging lens with
The Entry pupil diameters EPDy of the Y direction of imaging lens can meet fy/EPDy < 2.0.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length of the X-direction of imaging lens
The effective focal length fy of the Y direction of fx and imaging lens can meet 0.8 < fx/fy < 1.2.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length of the X-direction of imaging lens
The effective focal length f6 of the effective focal length fy of the Y direction of fx, imaging lens, the effective focal length f3 of the third lens and the 6th lens can
Meet -1.7 < (fx+fy)/(f3-f6) < 1.8.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the edge thickness ET6 and the 6th of the 6th lens
Center thickness CT6 of the lens on optical axis can meet 0.5 < ET6/CT6 < 1.1.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length of the X-direction of imaging lens
The effective focal length f1x of the X-direction of fx and the first lens can meet 1 < f1x/fx < 1.8.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the X-direction of the object side of the first lens
At the maximum caliber in the angular bisector direction of the X-axis and Y-axis of the object side of rise (SAG2) v, the first lens at maximum caliber
Rise (SAG2) d and the central wavelength lambdas of work of imaging lens can meet | λ/((SAG2) d- (SAG2) v)) |≤2.3.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the object side of the first lens is to imaging lens
Distance TTL and imaging lens of the imaging surface on optical axis imaging surface on the half ImgH of effective pixel area diagonal line length can
Meet TTL/ImgH < 1.65.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the full filed angle FOV of imaging lens can meet
70 ° of 85 ° of < FOV <.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, imaging lens further include diaphragm, diaphragm at
As camera lens distance SL and first lens of the imaging surface on optical axis object side to imaging lens imaging surface on optical axis
Distance TTL can meet 0.9 < SL/TTL < 1.1.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length of the Y direction of imaging lens
The radius of curvature R 16 of the image side surface of the radius of curvature R 3 and the 8th lens of the object side of fy, the second lens can meet 0.3 < fy/
(R3+R16) 0.9 <.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the effective focal length of the X-direction of imaging lens
The radius of curvature R 2 of the image side surface of the radius of curvature R 1 and the first lens of the object side of fx, the first lens can meet 0.4 < fx/
(R1+R2) 0.8 <.
Another aspect, this application provides such a imaging lens, and the imaging lens are along optical axis by object side to image side
It sequentially include first lens with focal power, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens,
Seven lens and the 8th lens.Wherein, the first lens have positive light coke；8th lens have negative power；First lens are to
At least one lens in eight lens have non-rotationally-symmetric aspherical.Wherein, the object side of the first lens is convex surface, image side
Face is concave surface；The object side of second lens is convex surface；And the 8th lens image side surface be concave surface.
The application uses multi-disc (for example, eight) lens, by each power of lens of reasonable distribution, face type, each
Spacing etc. on axis between the center thickness of mirror and each lens, so that above-mentioned imaging lens have micromation, large aperture and height
At least one beneficial effect such as resolution ratio.In addition, it is non-rotationally-symmetric aspherical by introducing, to meridian outside the axis of imaging lens
Aberration and sagitta of arc aberration are corrected simultaneously, to further obtain the promotion of image quality.
Detailed description of the invention
In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features of the application, purpose and excellent
Point will be apparent.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 1；
Fig. 2 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 1 in first quartile；
Fig. 3 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 2；
Fig. 4 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 2 in first quartile；
Fig. 5 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 3；
Fig. 6 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 3 in first quartile；
Fig. 7 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 4；
Fig. 8 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 4 in first quartile；
Fig. 9 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 5；
Figure 10 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 5 in first quartile；
Figure 11 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 6；
Figure 12 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 6 in first quartile；
Figure 13 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 7；
Figure 14 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 7 in first quartile；
Figure 15 shows the structural schematic diagram of the imaging lens according to the embodiment of the present application 8；
Figure 16 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 8 in first quartile；
Figure 17 shows the structural schematic diagrams according to the imaging lens of the embodiment of the present application 9；
Figure 18 diagrammatically illustrates situation of the RMS spot diameter of the imaging lens of embodiment 9 in first quartile.
Specific embodiment
Various aspects of the reference attached drawing to the application are made more detailed description by the application in order to better understand.It answers
Understand, the only description to the illustrative embodiments of the application is described in detail in these, rather than limits the application in any way
Range.In the specification, the identical element of identical reference numbers.Stating "and/or" includes associated institute
Any and all combinations of one or more of list of items.
It should be noted that in the present specification, first, second, third, etc. statement is only used for a feature and another spy
Sign distinguishes, without indicating any restrictions to feature.Therefore, without departing substantially from teachings of the present application, hereinafter
The first lens discussed are also known as the second lens or the third lens.
In the accompanying drawings, for ease of description, thickness, the size and shape of lens are slightly exaggerated.Specifically, attached drawing
Shown in spherical surface or aspherical shape be illustrated by way of example.That is, spherical surface or aspherical shape are not limited to attached drawing
Shown in spherical surface or aspherical shape.Attached drawing is merely illustrative and and non-critical drawn to scale.
Herein, near axis area refers to the region near optical axis.If lens surface is convex surface and does not define convex surface position
When setting, then it represents that the lens surface is convex surface near axis area is less than；If lens surface is concave surface and does not define the concave surface position
When, then it represents that the lens surface is concave surface near axis area is less than.In each lens, it is known as this thoroughly near the surface of object
The object side of mirror；In each lens, the image side surface of the lens is known as near the surface of imaging surface.
Herein, for the convenience of description, we define X-axis, Y-axis and Z axis X-Y-Z rectangular co-ordinate perpendicular to one another
System, in the rectangular coordinate system, origin is located on the optical axis of imaging lens, Z axis and optical axis coincidence, and X-axis is vertical with Z axis and position
In in sagittal plane, Y-axis is vertical with Z axis and is located in meridional plane.
However, it should be understood that " X-direction " mentioned herein, " Y direction " and " Z-direction " only indicates to divide
The not direction parallel with the X-axis of rectangular coordinate system, Y-axis and Z axis, rather than it is limited to three axis of rectangular coordinate system.Unless otherwise
Illustrate, otherwise each mark of reference in addition to the mark of reference for being related to visual field indicates the Y direction along pick-up lens herein
Characteristic parameter value.For example, in case of no particular description, the fx in conditional " fx/ (R1+R2) " indicates imaging lens
X-direction effective focal length, R1 indicate the first lens object side Y direction radius of curvature, R2 indicate the first lens
Image side surface Y direction radius of curvature.
It will also be appreciated that term " comprising ", " including ", " having ", "comprising" and/or " including ", when in this theory
It indicates there is stated feature, element and/or component when using in bright book, but does not preclude the presence or addition of one or more
Other feature, component, assembly unit and/or their combination.In addition, ought the statement of such as at least one of " ... " appear in institute
When after the list of column feature, entire listed feature is modified, rather than modifies the individual component in list.In addition, when describing this
When the embodiment of application, " one or more embodiments of the application " are indicated using "available".Also, term " illustrative "
It is intended to refer to example or illustration.
Unless otherwise defined, otherwise all terms (including technical terms and scientific words) used herein all have with
The application one skilled in the art's is generally understood identical meaning.It will also be appreciated that term (such as in everyday words
Term defined in allusion quotation) it should be interpreted as having and their consistent meanings of meaning in the context of the relevant technologies, and
It will not be explained with idealization or excessively formal sense, unless clear herein so limit.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The feature of the application, principle and other aspects are described in detail below.
Imaging lens according to the application illustrative embodiments may include such as eight lens with focal power, that is,
First lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens.This eight
Piece lens by object side to image side sequential, can have airspace between each adjacent lens along optical axis.
In the exemplary embodiment, the first lens can have positive light coke；Second lens have positive light coke or negative light
Focal power；The third lens have positive light coke or negative power；4th lens have positive light coke or negative power；5th lens tool
There are positive light coke or negative power；6th lens have positive light coke or negative power；7th lens have positive light coke or negative
Focal power；8th lens have negative power.Reasonable disposition focal power can reduce the spherical aberration and color difference of system, also can avoid light
Focal power concentrates on single eyeglass, reduces eyeglass sensibility, and then relax the tolerance conditions of actual fabrication.
Furthermore, it is possible to object side and/or image side surface by least one lens by the first lens into the 8th lens
It is set as non-rotationally-symmetric aspherical, further to promote image quality.It is non-rotationally-symmetric it is aspherical be a kind of free form surface,
Rotational symmetry it is aspherical on the basis of, increase non-rotational symmetry component, thus introduce in lens system non-rotationally-symmetric
Aspherical may make all has sufficient freedom degree in meridian and sagitta of arc direction, is conducive to simultaneously to meridian aberration outside axis and the sagitta of arc
Aberration is effectively corrected, while can also effectively correct coma, astigmatism and the curvature of field of the outer visual field of axis, to greatly promote light
The performance of system.Optionally, the object side of the first lens can be non-rotationally-symmetric aspherical.
In the exemplary embodiment, the object side of the first lens can be convex surface, and image side surface can be concave surface；Second lens
Object side can be convex surface；The image side surface of 8th lens can be concave surface.Reasonable disposition eyeglass face type, can reduce light in the first lens
Object side and image side surface, the object side of the second lens and the 8th lens image side surface deflection angle, avoid spending because of deflection angle
Stronger ghost image is generated greatly, while the chief ray angle of system can be made more to match with chip.
In the exemplary embodiment, the imaging lens of the application can meet conditional fi/EPDi < 2.0, and wherein i is x
Or y.When i is x, fx is the effective focal length of the X-direction of imaging lens, and EPDx is that the entrance pupil of the X-direction of imaging lens is straight
Diameter, fx/EPDx < 2.0.When i is y, fy is the effective focal length of the Y direction of imaging lens, and EPDy is the Y-axis of imaging lens
The Entry pupil diameters in direction, fy/EPDy < 2.0.More specifically, fx and EPDx can further meet 1.58≤fx/EPDx≤1.86,
Fy and EPDy can further meet 1.58≤fy/EPDy≤1.86.In addition, meeting conditional fx/EPDx < 2.0 and/or fy/
EPDy < 2.0, it is ensured that system has the characteristics that large aperture, facilitates the illumination for enhancing peripheral field.
In the exemplary embodiment, the imaging lens of the application can meet -1.7 < -0.3 < f8/f1 of conditional,
In, f8 is the effective focal length of the 8th lens, and f1 is the effective focal length of the first lens.More specifically, f8 and f1 can further meet-
1.62≤f8/f1≤-0.38.The rationally effective focal length of control the first lens and the 8th lens both can guarantee system by imaging
Beam converges to imaging surface from object side, can also the first lens of active balance and the 8th the lens coma and astigmatism that generate.
In the exemplary embodiment, the imaging lens of the application can meet 0.8 < fx/fy < 1.2 of conditional, wherein
Fx is the effective focal length of the X-direction of imaging lens, and fy is the effective focal length of the Y direction of imaging lens.More specifically, fx and
Fy can further meet 0.89≤fx/fy≤1.15.The rationally effective focal length of X-axis and having for Y direction of control imaging lens
Focal length is imitated, the curvature of field and astigmatism in meridian direction and sagitta of arc direction can be corrected simultaneously.
In the exemplary embodiment, the imaging lens of the application can meet conditional 0.4 < fx/ (R1+R2) < 0.8,
Wherein, fx is the effective focal length of the X-direction of imaging lens, and R1 is the radius of curvature of the object side of the first lens, R2 first
The radius of curvature of the image side surface of lens.More specifically, fx, R1 and R2 can further meet 0.58≤fx/ (R1+R2)≤0.74.
By reasonable disposition fx/ (R1+R2) range, it can both slow down deviation of the light in the first lens, and reduce the sensibility of the eyeglass,
The sagitta of arc astigmatism of the first lens generation can also be reduced.
In the exemplary embodiment, the imaging lens of the application can meet conditional 0.3 < fy/ (R3+R16) < 0.9,
Wherein, fy is the effective focal length of the Y direction of imaging lens, and R3 is the radius of curvature of the object side of the second lens, and R16 is the 8th
The radius of curvature of the image side surface of lens.More specifically, fy, R3 and R16 can further meet 0.39≤fy/ (R3+R16)≤
0.83.Meet conditional 0.3 < fy/ (R3+R16) < 0.9, incidence angle when can reduce light into the second lens reduces by the
The sensibility of the object side of two lens can also slow down deviation of the light in the 8th lens, enable the chip to preferably receive light
Line, to enhance illuminance of image plane.
In the exemplary embodiment, the imaging lens of the application can meet conditional TTL/ImgH < 1.65, wherein
TTL is the object side of the first lens to distance of the imaging surface on optical axis of imaging lens, and ImgH is the imaging surface of imaging lens
The half of upper effective pixel area diagonal line length.More specifically, TTL and ImgH can further meet 1.3 < TTL/ImgH <
1.65, such as 1.36≤TTL/ImgH≤1.61.The rationally ratio of control TTL and ImgH can maintain camera lens miniaturization and height
Under conditions of resolution ratio, guarantee system has biggish image planes to show the more detailed information of subject.
In the exemplary embodiment, the imaging lens of the application can meet 70 ° of 85 ° of < FOV < of conditional, wherein FOV
For the full filed angle of imaging lens.More specifically, FOV can further meet 72.9 °≤FOV≤81.9 °.By controlling imaging lens
The field angle of head, it is ensured that camera lens all has good image quality at wider visual field, and it is inclined also to can avoid peripheral field illumination
It is low.
In the exemplary embodiment, the imaging lens of the application can meet -1.7 < of conditional (fx+fy)/(f3-f6)
< 1.8, wherein fx is the effective focal length of the X-direction of imaging lens, and fy is the effective focal length of the Y direction of imaging lens, f3
For the effective focal length of the third lens, f6 is the effective focal length of the 6th lens.More specifically, fx, fy, f3 and f6 can further expire
Foot -1.65≤(fx+fy)/(f3-f6)≤1.75.- 1.7 < of conditional (fx+fy)/(f3-f6) < 1.8, can reduce light and exist
Deflection angle in the third lens and the 6th lens reduces the sensibility of the third lens and the 6th lens, in addition, can also active balance
Meridian and sagitta of arc astigmatism caused by the third lens and the 6th lens.
In the exemplary embodiment, above-mentioned imaging lens may also include diaphragm, to promote the image quality of camera lens.It is optional
Ground, diaphragm may be provided between object side and the first lens.
In the exemplary embodiment, the imaging lens of the application can meet 0.9 < SL/TTL < 1.1 of conditional, wherein
SL is imaging surface distance on optical axis of the diaphragm to imaging lens, TTL be the first lens object side to imaging lens at
Distance of the image planes on optical axis.More specifically, SL and TTL can further meet 0.95≤SL/TTL≤1.02.Meet conditional
0.9 < SL/TTL < 1.1 can guarantee the illumination of visual field outside axis under conditions of shortening optical system length, moreover it is possible to which obstruction makes into
The bad light of image quality amount promotes whole image quality.
In the exemplary embodiment, the imaging lens of the application can meet 0.5 < ET6/CT6 < 1.1 of conditional,
In, ET6 is the edge thickness of the 6th lens, and CT6 is center thickness of the 6th lens on optical axis.More specifically, ET6 and CT6
0.52≤ET6/CT6≤1.06 can further be met.The rationally edge thickness and center thickness of the 6th lens of control, both can guarantee
The craftsmanship of 6th lens, moreover it is possible to slow down deviation of the light in the 6th lens, avoid because deflection angle spend it is big due to generate it is stronger
Total reflection ghost image.
In the exemplary embodiment, the imaging lens of the application can meet 1 < f1x/fx < 1.8 of conditional, wherein fx
For the effective focal length of the X-direction of imaging lens, f1x is the effective focal length of the X-direction of the first lens.More specifically, f1x and
Fx can further meet 1.01≤f1x/fx≤1.73.Rationally the first lens of control can effectively subtract in the effective focal length of X-direction
The sagitta of arc astigmatism and the curvature of field that small first lens generate.
In the exemplary embodiment, the imaging lens of the application can meet conditional | λ/((SAG2) d- (SAG2) v)) |
≤ 2.3, wherein (SAG2) v is the rise at the maximum caliber of the X-direction of the object side of the first lens, and (SAG2) d is first
Rise at the maximum caliber in the angular bisector direction of the X-axis and Y-axis of the object side of lens, λ are in the work of imaging lens
Cardiac wave is long.More specifically, λ, (SAG2) d and (SAG2) v) it can further meet 0.24≤| λ/((SAG2) d- (SAG2) v)) |≤
2.30.The ratio range is rationally controlled, the peripheral field generated by the first lens in diagonal direction and X-direction can be reduced simultaneously
Astigmatism.
Optionally, above-mentioned imaging lens may also include the optical filter for correcting color error ratio and/or be located at for protecting
The protection glass of photosensitive element on imaging surface.
Multi-disc eyeglass, such as described above eight can be used according to the imaging lens of the above embodiment of the application.
By each power of lens of reasonable distribution, face type, each lens center thickness and each lens between axis on spacing etc., can
The volume for effectively reducing camera lens, the machinability for reducing the susceptibility of camera lens and improving camera lens, so that imaging lens are more advantageous
In producing and processing and be applicable to portable electronic product.In addition, it is non-rotationally-symmetric aspherical by introducing, to imaging lens
The outer meridian aberration of the axis of head and sagitta of arc aberration are corrected, and can be obtained further image quality and be promoted.
In presently filed embodiment, the mirror surface of each lens mostly uses aspherical mirror.The characteristics of non-spherical lens, is:
From lens centre to lens perimeter, curvature is consecutive variations.With the ball from lens centre to lens perimeter with constant curvature
Face lens are different, and non-spherical lens has more preferably radius of curvature characteristic, and there is improvement to distort aberration and improve astigmatic image error
Advantage.After non-spherical lens, the aberration occurred when imaging can be eliminated, as much as possible so as to improve at image quality
Amount.Optionally, the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and
At least one of the object side of each lens in eight lens and image side surface can be aspherical.Optionally, the first lens, second
Lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and each lens in the 8th lens object side
Face and image side surface can be aspherical.
However, it will be understood by those of skill in the art that without departing from this application claims technical solution the case where
Under, the lens numbers for constituting imaging lens can be changed, to obtain each result and advantage described in this specification.Though for example,
It is so described by taking eight lens as an example in embodiments, but the imaging lens are not limited to include eight lens.If
It needs, which may also include the lens of other quantity.
The specific embodiment for being applicable to the imaging lens of above embodiment is further described with reference to the accompanying drawings.
Embodiment 1
Referring to Fig. 1 and Fig. 2 description according to the imaging lens of the embodiment of the present application 1.Fig. 1 is shown according to the application reality
Apply the structural schematic diagram of the imaging lens of example 1.
As shown in Figure 1, sequentially being wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is concave surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 1 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 1
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 1
It should be understood that in upper table without especially indicate (blank space) " radius of curvature X " and " circular cone coefficient X " with it is right
" radius of curvature Y " and " circular cone coefficient Y " numerical value answered is consistent.It is similar in following embodiment.
As shown in Table 1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and
The image side surface S14 of the object side of any one lens and image side surface and the 7th lens E7 is rotational symmetry in eight lens E8
It is aspherical.In the present embodiment, the face type x of the non-spherical lens of each rotational symmetry is available but is not limited to following aspherical formula
It is defined:
Wherein, x be it is aspherical along optical axis direction when being highly the position of h, away from aspheric vertex of surface apart from rise；C is
Aspherical paraxial curvature, c=1/R (that is, inverse that paraxial curvature c is upper 1 mean curvature radius R of table)；K be circular cone coefficient (
It has been provided in table 1)；Ai is the correction factor of aspherical i-th-th rank.The following table 2 give can be used for it is each aspherical in embodiment 1
The high-order coefficient A of mirror surface S3-S12, S14-S164、A6、A8、A10、A12、A14、A16、A18And A20。
Table 2
By table 1 it can also be seen that the object side of the object side S1 of the first lens E1 and image side surface S2 and the 7th lens E7
S13 is non-rotationally-symmetric aspherical (that is, the face AAS), and non-rotationally-symmetric aspherical face type is available but is not limited to following
Non-rotationally-symmetric aspherical formula is defined:
Wherein, z is the rise for being parallel to the face of Z-direction；Cx, Cy are respectively curvature (=1/ song of X, Y-direction vertex of surface
Rate radius)；Kx, Ky are respectively X, Y-direction circular cone coefficient；AR, BR, CR, DR, ER, FR, GR, HR, JR are respectively aspherical rotation
4 ranks, 6 ranks, 8 ranks in symmetrical components, 10 ranks, 12 ranks, 14 ranks, 16 ranks, 18 ranks, 20 level numbers；AP,BP,CP,DP,EP,FP,
GP, HP, JP are respectively 4 ranks, 6 ranks, 8 ranks, 10 ranks, 12 ranks, 14 ranks, 16 ranks, 18 ranks, 20 in aspherical non-rotational symmetry component
Level number.The following table 3 gives each high level that can be used for non-rotationally-symmetric aspherical S1, S2 and S13 in embodiment 1
Number.
Table 3
Table 4 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 1, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, imaging lens optics total length TTL (that is, from the object of the first lens E1
Distance of the side S1 to imaging surface S19 on optical axis) and maximum angle of half field-of view Semi-FOV.
| f1(mm) | 6.25 | f7(mm) | -2.88 |
| f2(mm) | 4.98 | f8(mm) | -7.87 |
| f3(mm) | -5.88 | fx(mm) | 3.80 |
| f4(mm) | 36.23 | fy(mm) | 3.90 |
| f5(mm) | 717.79 | TTL(mm) | 4.90 |
| f6(mm) | 3.20 | Semi-FOV(°) | 41.0 |
Table 4
Imaging lens in embodiment 1 meet:
Fx/EPDx=1.73, wherein fx is the effective focal length of the X-direction of imaging lens, and EPDx is the X of imaging lens
The Entry pupil diameters of axis direction；
Fy/EPDy=1.73, wherein fy is the effective focal length of the Y direction of imaging lens, and EPDy is the Y of imaging lens
The Entry pupil diameters of axis direction；
F8/f1=-1.26, wherein f8 is the effective focal length of the 8th lens E8, and f1 is the effective focal length of the first lens E1；
Fx/fy=0.98, wherein fx is the effective focal length of the X-direction of imaging lens, and fy is the Y-axis side of imaging lens
To effective focal length；
Fx/ (R1+R2)=0.68, wherein fx is the effective focal length of the X-direction of imaging lens, and R1 is the first lens E1
Object side S1 radius of curvature, R2 be the first lens E1 image side surface S2 radius of curvature；
Fy/ (R3+R16)=0.71, wherein fy is the effective focal length of the Y direction of imaging lens, and R3 is the second lens E2
Object side S3 radius of curvature, R16 be the 8th lens E8 image side surface S16 radius of curvature；
TTL/ImgH=1.36, wherein TTL is that the imaging surface S19 of object side S1 to the imaging lens of the first lens E1 exists
Distance on optical axis, ImgH are the half of effective pixel area diagonal line length on the imaging surface S19 of imaging lens；
FOV=81.9 °, wherein FOV is the full filed angle of imaging lens；
(fx+fy)/(f3-f6)=- 0.85, wherein fx is the effective focal length of the X-direction of imaging lens, and fy is imaging
The effective focal length of the Y direction of camera lens, f3 are the effective focal length of the third lens E3, and f6 is the effective focal length of the 6th lens E6；
SL/TTL=0.97, wherein SL is imaging surface S19 distance on optical axis of the diaphragm STO to imaging lens, TTL
For the first lens E1 object side S1 to imaging lens distance of the imaging surface S19 on optical axis；
ET6/CT6=0.69, wherein ET6 is the edge thickness of the 6th lens E6, and CT6 is the 6th lens E6 on optical axis
Center thickness；
F1x/fx=1.63, wherein fx is the effective focal length of the X-direction of imaging lens, and f1x is the X of the first lens E1
The effective focal length of axis direction；
| λ/((SAG2) d- (SAG2) v)) |=0.35, wherein (SAG2) v is the X-axis of the object side S1 of the first lens E1
Rise at the maximum caliber in direction, (SAG2) d are the X-axis of the object side S1 of the first lens E1 and the angular bisector direction of Y-axis
Maximum caliber at rise, λ be imaging lens work central wavelength.
It is big at different image heights position in first quartile that Fig. 2 shows the RMS spot diameters of the imaging lens of embodiment 1
Small situation.As can be seen from FIG. 2, imaging lens given by embodiment 1 can be realized good image quality.
Embodiment 2
Referring to Fig. 3 and Fig. 4 description according to the imaging lens of the embodiment of the present application 2.In the present embodiment and following implementation
In example, for brevity, by clipped description similar to Example 1.Fig. 3 show according to the embodiment of the present application 2 at
As the structural schematic diagram of camera lens.
As shown in figure 3, sequentially being wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is concave surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is concave surface.6th lens E6 has negative power,
Its object side S11 is convex surface, and image side surface S12 is concave surface.7th lens E7 has positive light coke, and object side S13 is convex surface, as
Side S14 is convex surface.8th lens E8 has negative power, and object side S15 is concave surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 5 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 2
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 5
As shown in Table 5, in example 2, in the third lens E3, the 5th lens E5, the 6th lens E6 and the 7th lens E7
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1, the image side surface S4 of the second lens E2,
The image side surface S16 of the object side S7 and the 8th lens E8 of four lens E4 are the aspherical of rotational symmetry；The object of first lens E1
The object side S15 of the image side surface S8 and the 8th lens E8 of side S1, the object side S3 of the second lens E2, the 4th lens E4 are non-rotation
Turn symmetrical aspherical.
Table 6 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 2, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 7 show can be used for it is non-rotationally-symmetric aspherical in embodiment 2
The rotational symmetry component of S1, S3, S8 and S15 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspheric
Face face type can be limited by the formula (2) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -7.0880E-02 | -2.2630E-03 | 2.2527E-03 | 8.3592E-05 | -3.9050E-05 | -1.9240E-05 | -1.4618E-05 | -6.5694E-06 | -4.5013E-06 |
| S4 | -4.7835E-02 | 2.2575E-03 | 1.3812E-03 | -5.3475E-05 | 2.1338E-04 | -5.1181E-05 | 4.9574E-07 | 3.0148E-06 | -4.5929E-06 |
| S5 | -3.4361E-02 | -4.1321E-03 | 8.1629E-04 | 1.7416E-04 | 1.9997E-04 | -5.5561E-05 | -3.6942E-06 | 5.8689E-06 | 2.4970E-06 |
| S6 | 3.7999E-02 | -4.7284E-03 | 1.1510E-03 | 2.8765E-05 | 7.4378E-05 | 1.0719E-05 | -5.2558E-06 | 1.6959E-07 | -1.1637E-06 |
| S7 | -5.9970E-02 | -4.7922E-03 | -6.1576E-04 | 2.8110E-04 | -1.3123E-04 | 8.9469E-05 | 1.8666E-06 | 1.2495E-05 | -7.7565E-07 |
| S9 | -1.2300E-01 | 7.8067E-03 | 2.7040E-03 | -3.0267E-04 | -9.8955E-04 | -1.3937E-04 | 1.8682E-04 | -3.0582E-05 | 1.7463E-05 |
| S10 | -1.5797E-01 | 3.4398E-02 | 4.7862E-03 | -1.4268E-03 | -1.1555E-03 | -7.1233E-04 | 2.8505E-04 | 3.5620E-05 | 4.4750E-05 |
| S11 | -4.0494E-01 | -6.0866E-02 | 2.2172E-02 | 1.1123E-03 | 3.4168E-03 | -1.0753E-03 | -4.3069E-04 | -4.2032E-04 | -5.1453E-05 |
| S12 | -5.8831E-01 | -2.5277E-02 | 2.8045E-02 | -1.8453E-02 | 3.3756E-03 | -1.2548E-03 | 1.3648E-03 | 8.4350E-05 | 1.6713E-04 |
| S13 | -1.8775E+00 | 6.1107E-01 | -2.0026E-01 | 4.5086E-02 | -1.0040E-02 | 5.9008E-03 | -3.8020E-03 | 1.8780E-03 | -3.7526E-04 |
| S14 | -6.8921E-03 | 7.1049E-05 | 4.8664E-04 | -2.4711E-04 | -8.3310E-05 | -4.1843E-05 | -1.0539E-05 | 2.6653E-05 | 3.1261E-05 |
| S16 | -1.6043E+00 | 3.9299E-01 | -9.2899E-02 | 1.3844E-02 | -1.0969E-02 | 3.2961E-03 | -2.6934E-03 | 1.4327E-03 | 4.9377E-04 |
Table 6
Table 7
Table 8 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 2, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 5.91 | f7(mm) | 3.70 |
| f2(mm) | 5.28 | f8(mm) | -2.22 |
| f3(mm) | -6.06 | fx(mm) | 3.96 |
| f4(mm) | 70.71 | fy(mm) | 3.88 |
| f5(mm) | 32.87 | TTL(mm) | 4.92 |
| f6(mm) | -57.90 | Semi-FOV(°) | 39.9 |
Table 8
The RMS spot diameter that Fig. 4 shows the imaging lens of embodiment 2 is big at different image heights position in first quartile
Small situation.As can be seen from FIG. 4, imaging lens given by embodiment 2 can be realized good image quality.
Embodiment 3
The imaging lens according to the embodiment of the present application 3 are described referring to Fig. 5 and Fig. 6.Fig. 5 is shown according to the application
The structural schematic diagram of the imaging lens of embodiment 3.
As shown in figure 5, sequentially being wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is concave surface, and image side surface S12 is concave surface.7th lens E7 has positive light coke, and object side S13 is convex surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 9 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 3
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 9
As shown in Table 9, in embodiment 3, in the second lens E2, the 5th lens E5, the 7th lens E7 and the 8th lens E8
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1, the image side surface S6 of the third lens E3,
The image side surface S12 of the image side surface S8 and the 6th lens E6 of four lens E4 are the aspherical of rotational symmetry；The object of first lens E1
The object side S11 of the object side S7 and the 6th lens E6 of side S1, the object side S5 of the third lens E3, the 4th lens E4 are non-rotation
Turn symmetrical aspherical.
Table 10 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 3, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 11 show can be used for it is non-rotationally-symmetric aspherical in embodiment 3
The rotational symmetry component of S1, S5, S7 and S11 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspheric
Face face type can be limited by the formula (2) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -1.2830E-01 | -2.9400E-03 | 5.4836E-03 | -1.2027E-03 | -4.2711E-04 | -2.0429E-04 | -7.4652E-05 | -1.8281E-05 | 7.3255E-06 |
| S3 | -3.8255E-02 | 3.3277E-02 | 6.5565E-03 | -1.5216E-03 | -1.6350E-04 | 5.4527E-05 | -3.7323E-05 | -2.1485E-05 | -2.2439E-06 |
| S4 | -4.5078E-02 | 5.2165E-03 | 3.4220E-03 | 2.6227E-04 | 2.8923E-04 | -1.9915E-05 | -5.8333E-05 | -1.0799E-05 | -2.2884E-06 |
| S6 | 5.1699E-02 | -3.1602E-03 | 2.7677E-03 | 3.5934E-04 | 1.1657E-04 | 3.2559E-07 | 3.2605E-06 | -5.0110E-06 | -1.5394E-07 |
| S8 | -1.1781E-01 | -5.9237E-03 | 3.4038E-03 | 2.4092E-03 | 2.3520E-04 | 7.3795E-05 | -4.3292E-05 | -6.7909E-06 | -7.5573E-06 |
| S9 | -1.1108E-01 | -1.3834E-03 | 3.7910E-03 | 1.1145E-03 | -6.3045E-04 | -1.6732E-04 | 1.2935E-05 | 5.8299E-05 | -9.0811E-06 |
| S10 | -4.0314E-04 | 2.3008E-05 | 3.1478E-04 | 2.1866E-04 | -1.1744E-04 | 1.2923E-04 | 9.9882E-05 | 2.4250E-05 | -2.5810E-05 |
| S12 | -1.7404E-01 | 3.1748E-02 | 2.7515E-03 | -2.5167E-03 | -1.0954E-03 | -4.5067E-04 | 1.3180E-04 | -7.5754E-06 | 4.9249E-05 |
| S13 | -3.8144E-01 | -4.8798E-02 | 1.8357E-02 | -1.9053E-03 | 1.1452E-04 | -1.3110E-03 | -4.5636E-04 | -2.9639E-04 | -5.9197E-05 |
| S14 | -5.0402E-01 | -4.2794E-02 | 3.2197E-02 | -1.9388E-02 | 1.6922E-03 | -1.0688E-03 | 1.0610E-03 | 4.2051E-04 | 1.0560E-04 |
| S15 | -1.7597E+00 | 5.2585E-01 | -1.5328E-01 | 3.1933E-02 | -8.3320E-03 | 4.1466E-03 | -1.7350E-03 | 2.1246E-04 | -1.1018E-04 |
| S16 | -1.8166E+00 | 3.0844E-01 | -5.1311E-02 | 1.1942E-02 | -9.4262E-03 | 5.0234E-03 | -3.1755E-03 | -1.3599E-03 | -4.4449E-05 |
Table 10
Table 11
Table 12 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 3, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 6.76 | f7(mm) | 99.88 |
| f2(mm) | 4.75 | f8(mm) | -10.95 |
| f3(mm) | -5.32 | fx(mm) | 4.04 |
| f4(mm) | 21.97 | fy(mm) | 4.08 |
| f5(mm) | 12.11 | TTL(mm) | 5.20 |
| f6(mm) | -9.95 | Semi-FOV(°) | 39.1 |
Table 12
The RMS spot diameter that Fig. 6 shows the imaging lens of embodiment 3 is big at different image heights position in first quartile
Small situation.As can be seen from FIG. 6, imaging lens given by embodiment 3 can be realized good image quality.
Embodiment 4
The imaging lens according to the embodiment of the present application 4 are described referring to Fig. 7 and Fig. 8.Fig. 7 is shown according to the application
The structural schematic diagram of the imaging lens of embodiment 4.
As shown in fig. 7, sequentially being wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is concave surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is concave surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 13 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 4
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 13
As shown in Table 13, in example 4, in the second lens E2, the 6th lens E6, the 7th lens E7 and the 8th lens E8
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1, the image side surface S6 of the third lens E3,
The image side surface S8 of four lens E4, the image side surface S10 of the 5th lens E5 are the aspherical of rotational symmetry；The object side of first lens E1
Face S1, the object side S5 of the third lens E3, the object side S7 of the 4th lens E4, the 5th lens E5 object side S9 be it is non-rotating right
What is claimed is aspherical.
Table 14 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 4, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 15 show can be used for it is non-rotationally-symmetric aspherical in embodiment 4
The rotational symmetry component of S1, S5, S7 and S9 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspheric
Face face type can be limited by the formula (2) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -8.5988E-02 | -5.5373E-03 | 3.4681E-03 | -1.7791E-04 | -3.0136E-05 | -6.4523E-06 | 1.8910E-06 | -6.5672E-06 | 1.9772E-07 |
| S3 | -4.3038E-02 | 2.6485E-02 | 5.9566E-03 | -9.5888E-04 | -1.1991E-04 | 8.6365E-05 | -2.8284E-06 | -1.1152E-05 | -8.5455E-07 |
| S4 | -4.1987E-02 | 3.0430E-03 | 2.4136E-03 | 1.4220E-04 | 2.4741E-04 | 2.9345E-05 | -2.1838E-05 | -9.8617E-06 | 1.3978E-06 |
| S6 | 5.7910E-02 | -2.0554E-03 | 3.9907E-03 | 5.4440E-04 | 1.5887E-04 | -2.2847E-05 | -9.3464E-06 | -1.5323E-05 | -6.6573E-07 |
| S8 | -1.3208E-01 | -3.0786E-03 | 8.4199E-03 | 4.1548E-03 | 7.5480E-04 | 3.7698E-06 | 3.1768E-05 | -3.5103E-05 | 2.4069E-05 |
| S10 | -1.5537E-01 | 3.0779E-02 | 4.4722E-03 | -3.9592E-03 | -1.5781E-03 | -4.6859E-04 | 4.2598E-04 | 2.6691E-05 | 3.3828E-05 |
| S11 | -4.0164E-01 | -5.0185E-02 | 1.6756E-02 | -1.3327E-03 | 8.7854E-04 | -7.2402E-04 | -2.3013E-04 | -2.4163E-04 | -1.1744E-04 |
| S12 | -3.5144E-03 | 3.5139E-05 | -5.1177E-05 | -5.1861E-05 | -6.2502E-05 | -5.7704E-05 | 1.3677E-05 | -1.2907E-05 | 9.8747E-06 |
| S13 | -1.4886E-03 | -5.0430E-04 | -1.6248E-05 | -9.7091E-05 | -1.0892E-04 | -4.6472E-06 | -4.8816E-05 | 4.3252E-05 | 7.9803E-06 |
| S14 | -3.0182E-01 | -4.2754E-02 | 2.7905E-02 | -8.2633E-03 | 1.7416E-03 | -7.1113E-04 | 5.7788E-05 | 5.2773E-06 | 7.6495E-06 |
| S15 | -1.3929E+00 | 3.7089E-01 | -8.3459E-02 | 1.5624E-02 | -5.3466E-03 | 2.1596E-03 | -4.7759E-04 | 3.6024E-05 | 1.0883E-06 |
| S16 | -1.6977E+00 | 3.2107E-01 | -5.1600E-02 | 1.4033E-02 | -9.6192E-03 | 5.8615E-03 | -1.8621E-03 | -7.1408E-04 | 3.5954E-04 |
Table 14
Table 15
Table 16 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 4, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 6.86 | f7(mm) | -3.69 |
| f2(mm) | 4.69 | f8(mm) | -9.85 |
| f3(mm) | -5.26 | fx(mm) | 3.95 |
| f4(mm) | 19.78 | fy(mm) | 4.07 |
| f5(mm) | 171.63 | TTL(mm) | 5.15 |
| f6(mm) | 4.19 | Semi-FOV(°) | 39.1 |
Table 16
The RMS spot diameter that Fig. 8 shows the imaging lens of embodiment 4 is big at different image heights position in first quartile
Small situation.As can be seen from FIG. 8, imaging lens given by embodiment 4 can be realized good image quality.
Embodiment 5
The imaging lens according to the embodiment of the present application 5 are described referring to Fig. 9 and Figure 10.Fig. 9 is shown according to this Shen
Please embodiment 5 imaging lens structural schematic diagram.
As shown in figure 9, sequentially being wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is convex surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has negative power,
Its object side S11 is convex surface, and image side surface S12 is concave surface.7th lens E7 has positive light coke, and object side S13 is convex surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 17 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 5
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 17
As shown in Table 17, in embodiment 5, the second lens E2, the 4th lens E4, the 6th lens E6, the 7th lens E7 and
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1 in 8th lens E8, the third lens E3
The image side surface S10 of image side surface S6 and the 5th lens E5 are the aspherical of rotational symmetry；The object side S1 of first lens E1, third
The object side S9 of the object side S5 and the 5th lens E5 of lens E3 are non-rotationally-symmetric aspherical.
Table 18 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 5, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 19 show can be used for it is non-rotationally-symmetric aspherical in embodiment 5
The rotational symmetry component of S1, S5 and S9 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical face
Type can be limited by the formula (2) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -1.4487E-01 | -3.8683E-03 | 6.3504E-03 | -1.3153E-03 | -5.3029E-04 | -2.7912E-04 | -1.0705E-04 | -2.8608E-05 | 7.2827E-06 |
| S3 | -3.4565E-02 | 3.9187E-02 | 7.0565E-03 | -2.2291E-03 | -2.6437E-04 | 4.2759E-05 | -7.5686E-05 | -3.2769E-05 | -1.2659E-06 |
| S4 | -5.1574E-02 | 7.0508E-03 | 4.1593E-03 | 1.8149E-04 | 2.4252E-04 | -1.5448E-04 | -1.0711E-04 | -2.5545E-05 | 7.8999E-06 |
| S6 | 5.0999E-02 | -3.5225E-03 | 2.7062E-03 | 4.0543E-04 | 6.1956E-05 | 1.0620E-05 | -7.4603E-06 | -1.1515E-06 | -1.5694E-06 |
| S7 | -9.8006E-17 | -1.0101E-16 | -3.2869E-17 | 1.2066E-16 | 2.1352E-16 | -9.2438E-17 | 4.0959E-16 | -6.4540E-17 | -5.5484E-17 |
| S8 | -7.4531E-07 | 4.1737E-05 | -1.6289E-04 | 4.0965E-05 | -6.8438E-06 | 1.3771E-05 | -7.7882E-06 | 8.8246E-06 | -2.6951E-06 |
| S10 | -1.2496E-01 | -7.2515E-03 | 4.0795E-03 | 2.9331E-03 | 4.4324E-04 | 9.0440E-05 | -4.2962E-05 | -2.0227E-05 | -1.5571E-05 |
| S11 | -1.3231E-01 | 6.6643E-04 | 5.2786E-03 | 4.8992E-04 | -1.0771E-03 | -4.2280E-04 | 1.5811E-04 | 2.3526E-05 | -1.7921E-05 |
| S12 | -1.8948E-01 | 3.3753E-02 | 2.8313E-03 | -3.4351E-03 | -1.0638E-03 | -4.1072E-04 | 3.8915E-04 | -1.2402E-04 | -3.3238E-05 |
| S13 | -3.5612E-01 | -5.1204E-02 | 1.9290E-02 | -1.7487E-03 | 1.2482E-03 | -5.9075E-04 | -3.1543E-05 | -1.8439E-04 | -6.8988E-05 |
| S14 | -4.5651E-01 | -5.7375E-02 | 3.5757E-02 | -1.8779E-02 | 1.8187E-03 | -1.7762E-03 | 3.8392E-04 | 1.4679E-04 | 3.7857E-05 |
| S15 | -1.6207E+00 | 5.1768E-01 | -1.4543E-01 | 2.9616E-02 | -7.4716E-03 | 3.9781E-03 | -1.7593E-03 | 3.0054E-04 | 9.2413E-06 |
| S16 | -1.7322E+00 | 3.4515E-01 | -3.8765E-02 | 1.0215E-02 | -1.0388E-02 | 6.4266E-03 | -2.4740E-03 | -6.2123E-04 | 1.3552E-04 |
Table 18
Table 19
Table 20 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 5, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 6.91 | f7(mm) | 57.39 |
| f2(mm) | 4.79 | f8(mm) | -10.36 |
| f3(mm) | -5.55 | fx(mm) | 4.02 |
| f4(mm) | -943.78 | fy(mm) | 3.98 |
| f5(mm) | 22.25 | TTL(mm) | 5.21 |
| f6(mm) | -65.00 | Semi-FOV(°) | 39.4 |
Table 20
Figure 10 shows the RMS spot diameters of the imaging lens of embodiment 5 in first quartile at different image heights position
Size cases.As can be seen from FIG. 10, imaging lens given by embodiment 5 can be realized good image quality.
Embodiment 6
The imaging lens according to the embodiment of the present application 6 are described referring to Figure 11 and Figure 12.Figure 11 is shown according to this
Apply for the structural schematic diagram of the imaging lens of embodiment 6.
As shown in figure 11, it is sequentially wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Negative power, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is concave surface, and image side surface S8 is concave surface.The
Five lens E5 have negative power, and object side S9 is concave surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is convex surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 21 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 6
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 21
As shown in Table 21, in embodiment 6, in the second lens E2, the 4th lens E4, the 6th lens E6 and the 7th lens E7
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1, the object side S5 of the third lens E3,
The object side S9 of five lens E5, the image side surface S16 of the 8th lens E8 are the aspherical of rotational symmetry；The object side of first lens E1
Face S1, the image side surface S6 of the third lens E3, the image side surface S10 of the 5th lens E5, the 8th lens E8 object side S15 be it is non-rotating
It is symmetrical aspherical.
Table 22 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 6, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 23 show can be used for it is non-rotationally-symmetric aspherical in embodiment 6
The rotational symmetry component of S1, S6, S10 and S15 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric non-
Spherical surface type can be limited by the formula (2) provided in above-described embodiment 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S2 | -7.6520E-02 | -4.6684E-04 | 1.9127E-03 | 3.6336E-04 | -3.8997E-05 | -1.5651E-06 | -2.8669E-05 | -9.3570E-06 | -1.6335E-05 |
| S3 | -4.8089E-02 | 1.3653E-02 | 2.6276E-03 | 1.4293E-04 | -4.2613E-05 | -1.5478E-05 | -2.3130E-05 | -1.1766E-05 | -1.1925E-05 |
| S4 | -6.8974E-04 | 1.1369E-04 | -5.8523E-05 | -3.5587E-06 | -3.8014E-05 | -1.9892E-06 | -1.7856E-05 | 4.4779E-06 | -3.2212E-06 |
| S5 | -2.4861E-04 | -3.5148E-04 | 1.4002E-04 | 2.5200E-05 | 1.5897E-05 | 3.8625E-06 | -1.2843E-05 | -1.1499E-05 | -7.9630E-07 |
| S7 | -8.3184E-03 | -4.0707E-03 | 2.7568E-03 | -3.4750E-04 | 2.9393E-04 | -8.6443E-05 | 2.4570E-05 | -3.0240E-06 | 1.2648E-05 |
| S8 | 2.3860E-02 | -3.9236E-03 | 1.1298E-03 | -1.6450E-05 | 3.6042E-05 | 1.6626E-05 | -1.3340E-05 | 6.1896E-06 | -5.8894E-06 |
| S9 | -9.5397E-02 | -1.0317E-02 | 2.0942E-03 | 7.8564E-04 | 2.8701E-04 | 5.7617E-05 | -4.3886E-06 | -1.1290E-05 | -4.8763E-06 |
| S11 | -1.3882E-01 | 2.5848E-02 | -3.1274E-04 | -3.8870E-03 | -2.5480E-03 | 6.4281E-04 | -1.4510E-04 | -8.2940E-05 | -1.7033E-06 |
| S12 | -1.7404E-01 | 6.3493E-02 | 9.8256E-03 | -7.9902E-03 | -4.1845E-03 | -4.9472E-04 | 3.6019E-04 | 1.5276E-04 | 1.2689E-04 |
| S13 | -5.4740E-01 | -2.5408E-02 | 3.5337E-02 | 6.7898E-03 | 2.4709E-03 | -1.1006E-03 | -8.3526E-04 | -6.3926E-04 | -2.9343E-04 |
| S14 | -6.7605E-01 | -5.0452E-02 | 3.4873E-02 | -1.2727E-02 | 6.8275E-03 | 3.6440E-04 | 3.2927E-03 | 3.9425E-04 | 4.9205E-04 |
| S16 | -2.1216E+00 | 4.5248E-01 | -1.2691E-01 | 3.0932E-02 | -5.6114E-03 | 7.1452E-03 | -6.2766E-03 | 4.8213E-05 | -6.6438E-04 |
Table 22
Table 23
Table 24 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 6, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
Table 24
Figure 12 shows the RMS spot diameters of the imaging lens of embodiment 6 in first quartile at different image heights position
Size cases.As can be seen from FIG. 12, imaging lens given by embodiment 6 can be realized good image quality.
Embodiment 7
The imaging lens according to the embodiment of the present application 7 are described referring to Figure 13 and Figure 14.Figure 13 is shown according to this
Apply for the structural schematic diagram of the imaging lens of embodiment 7.
As shown in figure 13, it is sequentially wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Concave surface, image side surface S6 are concave surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is convex surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is concave surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 25 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 7
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 25
As shown in Table 25, in embodiment 7, the third lens E3, the 4th lens E4, the 5th lens E5, the 7th lens E7 and
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1 in 8th lens E8, the second lens E2
Object side S3, the 6th lens E6 object side S11 be the aspherical of rotational symmetry；The object side S1 of first lens E1, second
The image side surface S4 of lens E2, the image side surface S12 of the 6th lens E6 are non-rotationally-symmetric aspherical.
Table 26 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 7, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 27 show can be used for it is non-rotationally-symmetric aspherical in embodiment 7
The rotational symmetry component of S1, S4 and S12 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric aspherical
Face type can be limited by the formula (2) provided in above-described embodiment 1.
Table 26
Table 27
Table 28 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 7, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 4.80 | f7(mm) | -3.11 |
| f2(mm) | 5.01 | f8(mm) | -3.86 |
| f3(mm) | -4.56 | fx(mm) | 4.61 |
| f4(mm) | -24.02 | fy(mm) | 4.24 |
| f5(mm) | 14.32 | TTL(mm) | 5.20 |
| f6(mm) | 2.98 | Semi-FOV(°) | 38.5 |
Table 28
Figure 14 shows the RMS spot diameters of the imaging lens of embodiment 7 in first quartile at different image heights position
Size cases.As can be seen from FIG. 14, imaging lens given by embodiment 7 can be realized good image quality.
Embodiment 8
The imaging lens according to the embodiment of the present application 8 are described referring to Figure 15 and Figure 16.Figure 15 is shown according to this
Apply for the structural schematic diagram of the imaging lens of embodiment 8.
As shown in figure 15, it is sequentially wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is concave surface.The third lens E3 has positive light coke, and object side S5 is
Convex surface, image side surface S6 are convex surface.4th lens E4 has negative power, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is concave surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is concave surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 29 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 8
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 29
As shown in Table 29, in embodiment 8, any one in the 5th lens E5, the 6th lens E6 and the 7th lens E7 is saturating
The image side surface S2 of the object side of mirror and image side surface and the first lens E1, the image side surface S4 of the second lens E2, the third lens E3
Object side S5, the object side S7 of the 4th lens E4, the 8th lens E8 object side S15 be the aspherical of rotational symmetry；First
The image side surface of the object side S1 of lens E1, the object side S3 of the second lens E2, the image side surface S6 of the third lens E3, the 4th lens E4
S8, the 8th lens E8 image side surface S16 be it is non-rotationally-symmetric aspherical.
Table 30 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 8, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 31 show can be used for it is non-rotationally-symmetric aspherical in embodiment 8
The rotational symmetry component of S1, S3, S6, S8 and S16 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric
Aspherical face type can be limited by the formula (2) provided in above-described embodiment 1.
Table 30
Table 31
Table 32 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 8, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
| f1(mm) | 6.17 | f7(mm) | -9.38 |
| f2(mm) | 644.18 | f8(mm) | -4.45 |
| f3(mm) | 5.12 | fx(mm) | 4.00 |
| f4(mm) | -5.81 | fy(mm) | 4.48 |
| f5(mm) | 29.75 | TTL(mm) | 5.14 |
| f6(mm) | 11.91 | Semi-FOV(°) | 36.50 |
Table 32
Figure 16 shows the RMS spot diameters of the imaging lens of embodiment 8 in first quartile at different image heights position
Size cases.As can be seen from FIG. 16, imaging lens given by embodiment 8 can be realized good image quality.
Embodiment 9
The imaging lens according to the embodiment of the present application 9 are described referring to Figure 17 and Figure 18.Figure 17 shows according to this
Apply for the structural schematic diagram of the imaging lens of embodiment 9.
As shown in figure 17, it is sequentially wrapped along optical axis by object side to image side according to the imaging lens of the application illustrative embodiments
It includes: the first lens E1, the second lens E2, the third lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6, the 7th lens
E7, the 8th lens E8, optical filter E9 and imaging surface S19.
First lens E1 has positive light coke, and object side S1 is convex surface, and image side surface S2 is concave surface.Second lens E2 has
Positive light coke, object side S3 are convex surface, and image side surface S4 is convex surface.The third lens E3 has negative power, and object side S5 is
Convex surface, image side surface S6 are concave surface.4th lens E4 has positive light coke, and object side S7 is convex surface, and image side surface S8 is concave surface.The
Five lens E5 have positive light coke, and object side S9 is convex surface, and image side surface S10 is convex surface.6th lens E6 has positive light coke,
Its object side S11 is concave surface, and image side surface S12 is convex surface.7th lens E7 has negative power, and object side S13 is concave surface, as
Side S14 is concave surface.8th lens E8 has negative power, and object side S15 is convex surface, and image side surface S16 is concave surface.Optical filter
E9 has object side S17 and image side surface S18.Light from object sequentially passes through each surface S1 to S18 and is ultimately imaged and is being imaged
On the S19 of face.
In the present embodiment, diaphragm (not shown) can be set between object side and the first lens E1 further to promote camera lens
Image quality.
Table 33 shows the surface type, radius of curvature X, radius of curvature Y, thickness of each lens of the imaging lens of embodiment 9
Degree, material, circular cone coefficient X and circular cone coefficient Y, wherein the unit of radius of curvature X, radius of curvature Y and thickness are millimeter
(mm)。
Table 33
As shown in Table 33, in embodiment 9, in the second lens E2, the 4th lens E4, the 5th lens E5 and the 6th lens E6
The image side surface S2 of the object side of any one lens and image side surface and the first lens E1, the object side S5 of the third lens E3,
The object side S13 of seven lens E7, the object side S15 of the 8th lens E8 are the aspherical of rotational symmetry；The object of first lens E1
Side S1, the image side surface S6 of the third lens E3, the image side surface S14 of the 7th lens E7, the 8th lens E8 image side surface S16 be non-rotation
Turn symmetrical aspherical.
Table 34 shows the high-order coefficient that can be used for each aspherical mirror in embodiment 9, wherein each aspherical face type can
It is limited by the formula (1) provided in above-described embodiment 1.Table 35 show can be used for it is non-rotationally-symmetric aspherical in embodiment 9
The rotational symmetry component of S1, S6, S14 and S16 and the higher order coefficient of non-rotational symmetry component, wherein non-rotationally-symmetric non-
Spherical surface type can be limited by the formula (2) provided in above-described embodiment 1.
Table 34
Table 35
Table 36 gives the effective focal length of the X-direction of the effective focal length f1 to f8 of each lens in embodiment 9, imaging lens
The effective focal length fy of the Y direction of fx, imaging lens, the optics total length TTL of imaging lens and maximum angle of half field-of view Semi-
FOV。
Table 36
Figure 18 shows the RMS spot diameters of the imaging lens of embodiment 9 in first quartile at different image heights position
Size cases.As can be seen from FIG. 18, imaging lens given by embodiment 9 can be realized good image quality.
To sum up, embodiment 1 to embodiment 9 meets relationship shown in table 37 respectively.
Table 37
The application also provides a kind of photographic device, and electronics photosensitive element can be photosensitive coupling element (CCD) or complementation
Property matal-oxide semiconductor element (CMOS).Photographic device can be the independent picture pick-up device of such as digital camera, be also possible to
The photographing module being integrated on the mobile electronic devices such as mobile phone.The photographic device is equipped with imaging lens described above.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
- It by object side to image side sequentially include: the first lens, the second lens, with focal power along optical axis 1. imaging lens Three lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, which is characterized in thatFirst lens have positive light coke；8th lens have negative power；At least one lens of first lens into the 8th lens have non-rotationally-symmetric aspherical；The Entry pupil diameters EPDx of the X-direction of the effective focal length fx and imaging lens of the X-direction of the imaging lens is full Sufficient fx/EPDx < 2.0；AndThe Entry pupil diameters EPDy of the Y direction of the effective focal length fy and imaging lens of the Y direction of the imaging lens is full Sufficient fy/EPDy < 2.0.
- 2. imaging lens according to claim 1, which is characterized in that the effective focal length of the X-direction of the imaging lens The radius of curvature R 2 of the image side surface of the radius of curvature R 1 of the object side of fx, first lens and first lens meets 0.4 < fx/ (R1+R2) < 0.8.
- 3. imaging lens according to claim 1, which is characterized in that the effective focal length of the Y direction of the imaging lens The radius of curvature R 16 of the image side surface of the radius of curvature R 3 of the object side of fy, second lens and the 8th lens meets 0.3 < fy/ (R3+R16) < 0.9.
- 4. imaging lens according to claim 1, which is characterized in that the effective focal length f8 of the 8th lens and described the The effective focal length f1 of one lens meets -1.7 < f8/f1 < -0.3.
- 5. imaging lens according to claim 1, which is characterized in that the effective focal length of the X-direction of the imaging lens The effective focal length fy of the Y direction of fx and the imaging lens meets 0.8 < fx/fy < 1.2.
- 6. imaging lens according to claim 1, which is characterized in that the effective focal length of the X-direction of the imaging lens The effective focal length fy of the Y direction of fx, the imaging lens, the effective focal length f3 of the third lens and the 6th lens Effective focal length f6 meets -1.7 < (fx+fy)/(f3-f6) < 1.8.
- 7. imaging lens according to any one of claim 1 to 6, which is characterized in that the object side of first lens To distance TTL of the imaging surface on optical axis of the imaging lens and effective pixel area pair on the imaging surface of the imaging lens The long half ImgH of linea angulata meets TTL/ImgH < 1.65.
- 8. imaging lens according to any one of claim 1 to 6, which is characterized in that the full filed of the imaging lens Angle FOV meets 70 ° of 85 ° of < FOV <.
- 9. imaging lens according to any one of claim 1 to 6, which is characterized in that the imaging lens further include light The object side of door screen, distance SL of the imaging surface of the diaphragm to the imaging lens on the optical axis and first lens is extremely Distance TTL of the imaging surface of the imaging lens on the optical axis meets 0.9 < SL/TTL < 1.1.
- It by object side to image side sequentially include: the first lens, the second lens, with focal power along optical axis 10. imaging lens Three lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens, which is characterized in thatFirst lens have positive light coke；8th lens have negative power；At least one lens of first lens into the 8th lens have non-rotationally-symmetric aspherical；AndThe effective focal length f8 of 8th lens and the effective focal length f1 of first lens meet -1.7 < f8/f1 < -0.3.
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