CN105717616B - Camera system lens set - Google Patents
Camera system lens set Download PDFInfo
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- CN105717616B CN105717616B CN201610300920.4A CN201610300920A CN105717616B CN 105717616 B CN105717616 B CN 105717616B CN 201610300920 A CN201610300920 A CN 201610300920A CN 105717616 B CN105717616 B CN 105717616B
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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
- G02B13/004—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 four 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
A kind of camera system lens set, sequentially there is positive refracting power comprising the first lens by thing side to image side, its thing side surface is convex surface at dipped beam axle；Second lens have positive refracting power；3rd lens have positive refracting power；And the 4th lens there is negative refracting power, its image side surface is concave surface at dipped beam axle, and its thing side surface is all aspherical with image side surface, and the 4th lens image side surface has an at least point of inflexion.Camera system lens set can effectively strengthen (Telephoto) characteristic of looking in the distance of camera system lens set, camera system lens set is had short total long and short rear burnt advantage.It in addition, when camera system lens set meets specified conditions, can help to reduce the susceptibility of camera system lens set, can be advantageous to correct aberration, and can help to the assembling of camera system lens set, and maintain the miniaturization of camera system lens set.
Description
The application is to be for divisional application, the applying date of original application：On August 13rd, 2013；Application No.：
201310351251.X；It is entitled：Camera system lens set and image-taking device.
Technical field
The present invention relates to a kind of camera system lens set, the camera system lens set of more particularly to a kind of miniaturization.
Background technology
In recent years, flourishing with miniaturization phtographic lens, the demand of minisize image acquisition module increasingly improves, and general
The photo-sensitive cell of phtographic lens is nothing more than being photosensitive coupling element (Charge Coupled Device, CCD) or complementary aoxidize
Metal semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two
Kind, and progressing greatly with semiconductor process technique so that the Pixel Dimensions of photo-sensitive cell reduce, along with electronic product now with
The good and compact external form of function is development trend, and therefore, the miniaturization phtographic lens for possessing good image quality becomes
For main flow in the market.
Tradition is equipped on the miniaturized optical system on portable electronic product, uses based on three-chip type lens arrangement more,
But because the requirement to image quality more improves now, existing three-chip type optical system can not meet the photography of higher order
Demand.Though having the structure design of quadruple lenses in addition to lift image quality, the balanced arrangement of its refracting power is bad, easily leads
Cause its overall length not shorten effectively, cause it to be limited in the application of miniaturized electronic product.
The content of the invention
The present invention provides a kind of camera system lens set, by thing side to image side sequentially comprising the first lens, the second lens, the
Three lens and the 4th lens.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle, its image side surface in
It is convex surface at dipped beam axle.Second lens have positive refracting power.3rd lens have positive refracting power.4th lens have negative flexion
Power, its image side surface are concave surface at dipped beam axle, and its thing side surface and image side surface are all aspherical.In camera system lens set
Lens sum is four, and all has gap between wantonly two adjacent lens.Wherein, the focal length of camera system lens set is f, and second is saturating
The focal length of mirror is f2, and the second lens achromatic coefficient is V2, and the second lens are CT2 in the thickness on optical axis, the first lens and second
Lens are T12 in the spacing distance on optical axis, and it meets following condition：
0 ＜ f/f2 ＜ 0.5；
V2 ＜ 32；And
0.75 ＜ T12/CT2 ＜ 2.5.
The present invention provides a kind of camera system lens set, by thing side to image side sequentially comprising the first lens, the second lens, the
Three lens and the 4th lens.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle, its image side surface in
It is convex surface at dipped beam axle.Second lens have positive refracting power, and its image side surface is convex surface at dipped beam axle.3rd lens have just
Refracting power.4th lens have negative refracting power, and its image side surface is concave surface at dipped beam axle, and its thing side surface and image side surface are all
To be aspherical, and the 4th lens image side surface has an at least point of inflexion.Lens sum is four in camera system lens set,
And all there is gap between wantonly two adjacent lens.Wherein, the focal length of camera system lens set is f, and the focal length of the second lens is f2, the
Two lens achromatic coefficients are V2, and it meets following condition：
0 ＜ f/f2 ＜ 0.5；And
V2 ＜ 32.
By the first lens with positive refracting power, the second lens with positive refracting power, the 3rd lens with positive refracting power with
And the 4th lens there is the configuration of negative refracting power, can effectively strengthen the characteristic of looking in the distance of camera system lens set, make camera system mirror
Piece group has short total long and short rear burnt advantage.
When f/f2 meets above-mentioned condition, it can help to reduce the susceptibility of camera system lens set.
When V2 meets above-mentioned condition, can be advantageous to correct aberration.
When T12/CT2 meets above-mentioned condition, the assembling of camera system lens set is can help to, and maintains camera system mirror
The miniaturization of piece group.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 illustrates a kind of schematic diagram of image-taking device according to first embodiment of the invention；
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of first embodiment from left to right；
Fig. 3 illustrates a kind of schematic diagram of image-taking device according to second embodiment of the invention；
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of second embodiment from left to right；
Fig. 5 illustrates a kind of schematic diagram of image-taking device according to third embodiment of the invention；
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of 3rd embodiment from left to right；
Fig. 7 illustrates a kind of schematic diagram of image-taking device according to fourth embodiment of the invention；
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of fourth embodiment from left to right；
Fig. 9 illustrates a kind of schematic diagram of image-taking device according to fifth embodiment of the invention；
Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve of the camera system lens set of the 5th embodiment from left to right
Figure；
Figure 11 illustrates a kind of schematic diagram of image-taking device according to sixth embodiment of the invention；
Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve of the camera system lens set of sixth embodiment from left to right
Figure；
Figure 13 illustrates a kind of schematic diagram of image-taking device according to seventh embodiment of the invention；
Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve of the camera system lens set of the 7th embodiment from left to right
Figure.
Wherein, reference
Guang Quan ︰ 100,200,300,400,500,600,700
First Tou Jing ︰ 110,210,310,410,510,610,710
Thing Ce Biao Mian ︰ 111,211,311,411,511,611,711
As side surface ︰ 112,212,312,412,512,612,712
2nd saturating mirror ︰ 120,220,320,420,520,620,720
Thing Ce Biao Mian ︰ 121,221,321,421,521,621,721
As side surface ︰ 122,222,322,422,522,622,722
San Tou Jing ︰ 130,230,330,430,530,630,730
Thing Ce Biao Mian ︰ 131,231,331,431,531,631,731
As side surface ︰ 132,232,332,432,532,632,732
4th Tou Jing ︰ 140,240,340,440,540,640,740
Thing Ce Biao Mian ︰ 141,241,341,441,541,641,741
As side surface ︰ 142,242,342,442,542,642,742
Infrared ray filters out Lv Guang Pian ︰ 150,250,350,450,550,650,750
Cheng Xiang Mian ︰ 160,260,360,460,560,660,760
Electronics photo-sensitive cell ︰ 170,270,370,470,570,670,770
The lens of CT1 ︰ first are in the thickness on optical axis
The lens of CT2 ︰ second are in the thickness on optical axis
The lens of CT4 ︰ the 4th are in the thickness on optical axis
The focal length of f ︰ camera system lens sets
The focal length of the lens of f1 ︰ first
The focal length of the lens of f2 ︰ second
The focal length of the lens of f3 ︰ the 3rd
The f-number of Fno ︰ camera system lens sets
The maximum visual angle half of HFOV ︰ camera system lens sets
The lens of T12 ︰ first and the second lens are in the spacing distance on optical axis
The lens of T23 ︰ second and the 3rd lens are in the spacing distance on optical axis
The lens of T34 ︰ the 3rd and the 4th lens are in the spacing distance on optical axis
The radius of curvature of R1 ︰ the first lens things side surface
The radius of curvature on R2 ︰ the first lens image sides surface
The radius of curvature of R3 ︰ the second lens things side surface
The radius of curvature on R4 ︰ the second lens image sides surface
The radius of curvature of the lens thing side surfaces of R7 ︰ the 4th
The radius of curvature on the lens image side surfaces of R8 ︰ the 4th
The abbe number of the lens of V2 ︰ second
Embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Camera system lens set is sequentially saturating comprising the first lens, the second lens, the 3rd lens and the 4th by thing side to image side
Mirror.Wherein, the lens with refracting power are four in camera system lens set.
First lens have positive refracting power.Positive refracting power needed for camera system lens set can be thereby provided, and can be effective
Strengthen shortening the optics total length of camera system lens set.First lens thing side surface is convex surface at dipped beam axle, the first lens
Image side surface is convex surface at dipped beam axle, helps to strengthen positive refracting power configuration, is more beneficial for shortening optics total length.
Second lens have positive refracting power.The susceptibility of camera system lens set can thereby be reduced and reduce spherical aberration generation.
Second lens thing side surface can be concave surface at dipped beam axle, and the second lens image side surface can be convex surface at dipped beam axle, be advantageous to
Correct astigmatism (Astigmatism).
3rd lens have positive refracting power.Thereby can the positive refracting power configuration of active balance.3rd lens thing side surface is near
Can be concave surface at optical axis, the 3rd lens image side surface can be convex surface at dipped beam axle, can effectively strengthen astigmatism amendment.3rd lens can
With an at least point of inflexion, the angle on the light incident electron photo-sensitive cell of off-axis visual field is effectively suppressed.
4th lens have negative refracting power.The principal point of camera system lens set can thereby be made away from (principal
Point) imaging surface, be advantageous to shorten optics total length, to maintain the miniaturization of camera system lens set.4th lens thing side table
Face can be convex surface at dipped beam axle, and the 4th lens image side surface is concave surface at dipped beam axle, can help to correct aberration.4th is saturating
Mirror image side surface can have an at least point of inflexion, can effective modified off-axis visual field aberration.
By the first lens with positive refracting power, the second lens with positive refracting power, the 3rd lens with positive refracting power with
And the 4th lens there is the configuration of negative refracting power, can effectively strengthen the characteristic of looking in the distance of camera system lens set, make camera system mirror
Piece group has short total long and short rear burnt advantage.
The focal length of first lens is f1, and the focal length of the second lens is f2, and it meets the ＜ f2/f1 of following condition formulae 0.Thereby,
It can help to reduce spherical aberration and desensitising.It is preferred that following condition can be met：1.0 ＜ f2/f1.
The focal length of second lens is f2, and the focal length of the 3rd lens is f3, and it meets following condition：0 ＜ f3/f2 ＜ 1.25.
Thereby, second more balanced with the refracting power of the 3rd eyeglass, can relax influences image periphery and gather because refracting power has big difference
The problem of burnt.It is preferred that following condition can be met：0 ＜ f3/f2 ＜ 0.8.
First lens are CT1 in the thickness on optical axis, and the second lens are CT2 in the thickness on optical axis, the first lens and
It is T23 that two lens, which in the spacing distance on optical axis are T12, the second lens and the 3rd lens in the spacing distance on optical axis, and it is full
Sufficient following condition formulae：0.3 ＜ (T12+CT2+T23)/CT1 ＜ 1.9.Thereby, contribute to further to shorten total length.It is preferred that
Following condition can be met：0.5 ＜ (T12+CT2+T23)/CT1 ＜ 1.65.
The radius of curvature of second lens thing side surface is R3, and the radius of curvature on the second lens image side surface is R4, and it meets
Following condition：| (R3-R4)/(R3+R4) | ＜ 1.25.Thereby, it can help to correct astigmatism with reducing spherical aberration.
4th lens are CT4 in the thickness on optical axis, and the 3rd lens are in the spacing distance on optical axis with the 4th lens
T34, it meets following condition：0.25 ＜ T34/CT4 ＜ 1.0.Thereby, the assembling of lens is can help to improving fine ratio of product.
The radius of curvature of first lens thing side surface is R1, and the radius of curvature on the first lens image side surface is R2, and it meets
Following condition：- 1.0 ＜ (R1+R2)/(R1-R2) ＜ 0.3.Thereby, spherical aberration generation can be advantageously reduced.
The focal length of camera system lens set is f, and the first lens are f1 as focal length, and it meets following condition：0.6 ＜ f/f1 ＜
1.2.Thereby, the configuration of refracting power size can be made more to balance, can effectively control total length.
The focal length of camera system lens set is f, and the focal length of the second lens is f2, and it meets following condition：0 ＜ f/f2 ＜
0.5.Thereby, the susceptibility of camera system lens set can be reduced.
The abbe number of second lens is V2, and it meets following condition：V2 ＜ 32.Thereby, can be advantageous to correct aberration.
Second lens are CT2 in the thickness on optical axis, and the first lens are in the spacing distance on optical axis with the second lens
T12, it meets following condition：0.75 ＜ T12/CT2 ＜ 2.5.Thereby, contribute to the assembling of camera system lens set, and maintain
The miniaturization of camera system lens set.
The radius of curvature of 4th lens thing side surface is R7, and the radius of curvature on the 4th lens image side surface is R8, and it meets
Following condition：0 ＜ (R7+R8)/(R7-R8).Thereby, it can help to lens error correction.
The present invention provides a kind of image-taking device, and described camera system lens set and electricity are sequentially included by thing side to image side
Sub- photo-sensitive cell, wherein electronics photo-sensitive cell are connected to described camera system lens set.Thereby, image-taking device can be by shooting
System lens set utilizes the configuration mode of lens refracting power, can effectively strengthen the characteristic of looking in the distance of camera system lens set, make its tool
There is short total long and short rear burnt advantage.In addition, and by the focal length of the second lens and the focus configuration of the 3rd lens, make second with
The refracting power of 3rd eyeglass more balances, can relax because refracting power has big difference influence image peripheral focus the problem of.
In camera system lens set of the present invention and image-taking device, the material of lens can be plastic cement or glass.When the material of lens
Matter is glass, can increase the free degree of camera system lens set refracting power configuration.It is another when lens material is plastic cement, then can have
Effect reduces production cost.In addition, can be aspherical in being set on lens surface, the aspherical shape that can be easily fabricated to beyond sphere
Shape, more controlled variable is obtained, to cut down aberration, and then reduce the required number using lens, therefore can effectively drop
The total length of low camera system lens set of the present invention.
In camera system lens set of the present invention and image-taking device, for the lens with refracting power, if lens surface
It is for convex surface and when not defining the convex surface position, then it represents that the lens surface is convex surface at dipped beam axle；If lens surface be for
Concave surface and when not defining the concave surface position, then it represents that the lens surface is concave surface at dipped beam axle.
In camera system lens set of the present invention and image-taking device, an at least diaphragm is may be provided with, its position may be disposed at
Before one lens, between each lens or after last lens, the species such as light diaphragm (Glare Stop) of shining of the diaphragm
Or field stop (Field Stop) etc., to reduce veiling glare, help to lift image quality.
Disclosed herein camera system lens set and image-taking device in, aperture may be disposed at object and the first lens
Between (put aperture in being) between (be preposition aperture) or the first lens and imaging surface.Aperture can make to take the photograph if preposition aperture
As the outgoing pupil (Exit Pupil) of the system lens set distance longer with imaging surface generation, with telecentricity
(Telecentric) effect, the efficiency that electronics photo-sensitive cell receives image can be increased；Aperture is put if in, contributes to expand
The angle of visual field of camera system lens set, make camera system lens set that there is the advantage of wide-angle lens.
Disclosed herein camera system lens set and image-taking device have excellent lens error correction and good image quality concurrently
Characteristic many-sided can be applied to the electron image systems such as 3D (three-dimensional) image capture, digital camera, mobile device and digital flat
In system.
According to above-mentioned embodiment, specific embodiment set forth below simultaneously coordinates accompanying drawing to be described in detail.
<First embodiment>
Fig. 1 and Fig. 2 is refer to, wherein Fig. 1 illustrates a kind of schematic diagram of image-taking device according to first embodiment of the invention,
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of first embodiment from left to right.Can by Fig. 1
Know, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 170.Camera system lens set
By thing side to image side sequentially comprising aperture 100, the first lens 110, the second lens 120, the 3rd lens 130, the 4th lens 140,
Infrared ray filters out optical filter (IR-Cut Filter) 150 and imaging surface 160, electronics photo-sensitive cell 170 are arranged at imaging surface
On 160.Wherein, the lens with refracting power are four in camera system lens set.
First lens 110 have positive refracting power, and are plastic cement material, and its thing side surface 111 is convex surface at dipped beam axle, its
Image side surface 112 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 120 have positive refracting power, and are plastic cement material, and its thing side surface 121 is convex surface at dipped beam axle, its
Image side surface 122 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 130 have positive refracting power, and are plastic cement material, and its thing side surface 131 is concave surface at dipped beam axle, its
Image side surface 132 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 131 and image side surface
132 all have the point of inflexion.
4th lens 140 have negative refracting power, and are plastic cement material, and its thing side surface 141 is convex surface at dipped beam axle, its
Image side surface 142 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 142 has the point of inflexion.
The material that infrared ray filters out optical filter 150 is glass, and it is arranged between the 4th lens 140 and imaging surface 160, and
The focal length of camera system lens set is not influenceed.
The aspherical fitting equation of above-mentioned each lens represents as follows：
；Wherein：
X：Apart from the point that optical axis is Y, its relative distance with being tangential on the section of intersection point on aspherical optical axis on aspherical；
Y：The vertical range of point and optical axis in aspheric curve；
R：Radius of curvature；
k：Conical surface coefficient；And
Ai：I-th rank asphericity coefficient.
In the camera system lens set of first embodiment, the focal length of camera system lens set is f, camera system lens set
F-number (F-number) is Fno, and the half at maximum visual angle is HFOV in camera system lens set, and its numerical value is as follows：F=
2.08mm；Fno=2.30；And HFOV=39.5 degree.
In the camera system lens set of first embodiment, the abbe number of the second lens 120 is V2, and it meets following bar
Part：V2=23.4.
The focal length of camera system lens set is f, and the focal length of the first lens 110 is f1, and it meets following condition：F/f1=
0.72。
The focal length of camera system lens set is f, and the focal length of the second lens 120 is f2, and it meets following condition：F/f2=
0.16。
The focal length of first lens 110 is f1, and the focal length of the second lens 120 is f2, and it meets following condition：F2/f1=
4.63。
The focal length of second lens 120 is f2, and the focal length of the 3rd lens 130 is f3, and it meets following condition：F3/f2=
0.09。
Second lens 120 are CT2 in the thickness on optical axis, and the first lens 110 and the second lens 120 are in the interval on optical axis
Distance is T12, and it meets following condition formulae：T12/CT2=0.88.
First lens 110 are CT1 in the thickness on optical axis, and the second lens 120 are CT2 in the thickness on optical axis, and first is saturating
The lens 120 of mirror 110 and second are T12 in the spacing distance on optical axis, and the second lens 120 and the 3rd lens 130 are on optical axis
Spacing distance is T23, and it meets following condition：(T12+CT2+T23)/CT1=1.49.
4th lens 140 are CT4 in the thickness on optical axis, and the 3rd lens 130 and the 4th lens 140 are in the interval on optical axis
Distance is T34, and it meets following condition formulae：T34/CT4=0.35.
The radius of curvature of second lens thing side surface 121 is R3, and the radius of curvature on the second lens image side surface 122 is R4,
It meets following condition：| (R3-R4)/(R3+R4) |=1.20.
The radius of curvature of first lens thing side surface 111 is R1, and the radius of curvature on the first lens image side surface 112 is R2,
It meets following condition：(R1+R2)/(R1-R2)=- 0.97.
The radius of curvature of 4th lens thing side surface 141 is R7, and the radius of curvature on the 4th lens image side surface 142 is R8,
It meets following condition：(R7+R8)/(R7-R8)=1.51.
Coordinate with reference to following table one and table two.
Table one is the detailed structured data of Fig. 1 first embodiments, and the wherein unit of radius of curvature, thickness and focal length is mm,
And surface 0 to 12 is sequentially represented by the surface of thing side to image side.Table two is the aspherical surface data in first embodiment, wherein, k tables
Conical surface coefficient in aspheric curve equation, A4 to A16 then represent each rank asphericity coefficient of surface the 4 to 16th.It is in addition, following
Each embodiment form is the schematic diagram and aberration curve figure of corresponding each embodiment, in form the definition of data all with first embodiment
Table one and table two definition it is identical, not in this to go forth.
<Second embodiment>
Fig. 3 and Fig. 4 is refer to, wherein Fig. 3 illustrates a kind of schematic diagram of image-taking device according to second embodiment of the invention,
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of second embodiment from left to right.Can by Fig. 3
Know, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 270.Camera system lens set
By thing side to image side sequentially comprising aperture 200, the first lens 210, the second lens 220, the 3rd lens 230, the 4th lens 240,
Infrared ray filters out optical filter 250 and imaging surface 260, and electronics photo-sensitive cell 270 is arranged on imaging surface 260.Wherein, shooting system
The lens in lens set of uniting with refracting power are four.
First lens 210 have positive refracting power, and are glass material, and its thing side surface 211 is convex surface at dipped beam axle, its
Image side surface 212 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 220 have positive refracting power, and are plastic cement material, and its thing side surface 221 is concave surface at dipped beam axle, its
Image side surface 222 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 230 have positive refracting power, and are plastic cement material, and its thing side surface 231 is concave surface at dipped beam axle, its
Image side surface 232 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 231 and image side surface
232 all have the point of inflexion.
4th lens 240 have negative refracting power, and are plastic cement material, and its thing side surface 241 is convex surface at dipped beam axle, its
Image side surface 242 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 242 has the point of inflexion.
The material that infrared ray filters out optical filter 250 is glass, and it is arranged between the 4th lens 240 and imaging surface 260, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table three and table four.
In second embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<3rd embodiment>
Fig. 5 and Fig. 6 is refer to, wherein Fig. 5 illustrates a kind of schematic diagram of image-taking device according to third embodiment of the invention,
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of 3rd embodiment from left to right.Can by Fig. 5
Know, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 370.Camera system lens set
By thing side to image side sequentially comprising the first lens 310, aperture 300, the second lens 320, the 3rd lens 330, the 4th lens 340,
Infrared ray filters out optical filter 350 and imaging surface 360, and electronics photo-sensitive cell 370 is arranged on imaging surface 360.Wherein, shooting system
The lens in lens set of uniting with refracting power are four.
First lens 310 have positive refracting power, and are plastic cement material, and its thing side surface 311 is convex surface at dipped beam axle, its
Image side surface 312 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 320 have positive refracting power, and are plastic cement material, and its thing side surface 321 is concave surface at dipped beam axle, its
Image side surface 322 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 330 have positive refracting power, and are plastic cement material, and its thing side surface 331 is concave surface at dipped beam axle, its
Image side surface 332 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 331 and image side surface
332 all have the point of inflexion.
4th lens 340 have negative refracting power, and are plastic cement material, and its thing side surface 341 is convex surface at dipped beam axle, its
Image side surface 342 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 342 has the point of inflexion.
The material that infrared ray filters out optical filter 350 is glass, and it is arranged between the 4th lens 340 and imaging surface 360, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table five and table six.
In 3rd embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Fourth embodiment>
Fig. 7 and Fig. 8 is refer to, wherein Fig. 7 illustrates a kind of schematic diagram of image-taking device according to fourth embodiment of the invention,
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of fourth embodiment from left to right.Can by Fig. 7
Know, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 470.Camera system lens set
By thing side to image side sequentially comprising aperture 400, the first lens 410, the second lens 420, the 3rd lens 430, the 4th lens 440,
Infrared ray filters out optical filter 450 and imaging surface 460, and electronics photo-sensitive cell 470 is arranged on imaging surface 460.Wherein, shooting system
The lens in lens set of uniting with refracting power are four.
First lens 410 have positive refracting power, and are plastic cement material, and its thing side surface 411 is convex surface at dipped beam axle, its
Image side surface 412 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 420 have positive refracting power, and are plastic cement material, and its thing side surface 421 is convex surface at dipped beam axle, its
Image side surface 422 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 430 have positive refracting power, and are plastic cement material, and its thing side surface 431 is concave surface at dipped beam axle, its
Image side surface 432 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 431 and image side surface
432 all have the point of inflexion.
4th lens 440 have negative refracting power, and are plastic cement material, and its thing side surface 441 is convex surface at dipped beam axle, its
Image side surface 442 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 442 has the point of inflexion.
The material that infrared ray filters out optical filter 450 is glass, and it is arranged between the 4th lens 440 and imaging surface 460, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table seven and table eight.
In fourth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<5th embodiment>
Fig. 9 and Figure 10 is refer to, wherein Fig. 9 illustrates a kind of signal of image-taking device according to fifth embodiment of the invention
Figure, Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of the 5th embodiment from left to right.By scheming
9 understand, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 570.Camera system mirror
Piece group is by thing side to image side sequentially comprising aperture 500, the first lens 510, the second lens 520, the 3rd lens 530, the 4th lens
540th, infrared ray filters out optical filter 550 and imaging surface 560, and electronics photo-sensitive cell 570 is arranged on imaging surface 560.Wherein, take the photograph
It it is four as having the lens of refracting power in system lens set.
First lens 510 have positive refracting power, and are plastic cement material, and its thing side surface 511 is convex surface at dipped beam axle, its
Image side surface 512 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 520 have positive refracting power, and are plastic cement material, and its thing side surface 521 is concave surface at dipped beam axle, its
Image side surface 522 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 530 have positive refracting power, and are plastic cement material, and its thing side surface 531 is convex surface at dipped beam axle, its
Image side surface 532 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 531 and image side surface
532 all have the point of inflexion.
4th lens 540 have negative refracting power, and are plastic cement material, and its thing side surface 541 is concave surface at dipped beam axle, its
Image side surface 542 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 542 has the point of inflexion.
The material that infrared ray filters out optical filter 550 is glass, and it is arranged between the 4th lens 540 and imaging surface 560, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table nine and table ten.
In 5th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Sixth embodiment>
Figure 11 and Figure 12 is refer to, wherein Figure 11 illustrates a kind of signal of image-taking device according to sixth embodiment of the invention
Figure, Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of sixth embodiment from left to right.By scheming
11 understand, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 670.Camera system mirror
Piece group is by thing side to image side sequentially comprising aperture 600, the first lens 610, the second lens 620, the 3rd lens 630, the 4th lens
640th, infrared ray filters out optical filter 650 and imaging surface 660, and electronics photo-sensitive cell 670 is arranged on imaging surface 660.Wherein, take the photograph
It it is four as having the lens of refracting power in system lens set.
First lens 610 have positive refracting power, and are plastic cement material, and its thing side surface 611 is convex surface at dipped beam axle, its
Image side surface 612 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 620 have positive refracting power, and are plastic cement material, and its thing side surface 621 is concave surface at dipped beam axle, its
Image side surface 622 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 630 have positive refracting power, and are plastic cement material, and its thing side surface 631 is concave surface at dipped beam axle, its
Image side surface 632 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 631 and image side surface
632 all have the point of inflexion.
4th lens 640 have negative refracting power, and are plastic cement material, and its thing side surface 641 is concave surface at dipped beam axle, its
Image side surface 642 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 642 has the point of inflexion.
The material that infrared ray filters out optical filter 650 is glass, and it is arranged between the 4th lens 640 and imaging surface 660, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table 11 and table 12.
In sixth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<7th embodiment>
Figure 13 and Figure 14 is refer to, wherein Figure 13 illustrates a kind of signal of image-taking device according to seventh embodiment of the invention
Figure, Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve figure of the camera system lens set of the 7th embodiment from left to right.By scheming
13 understand, image-taking device is by thing side to image side sequentially comprising camera system lens set and electronics photo-sensitive cell 770.Camera system mirror
Piece group is by thing side to image side sequentially comprising aperture 700, the first lens 710, the second lens 720, the 3rd lens 730, the 4th lens
740th, infrared ray filters out optical filter 750 and imaging surface 760, and electronics photo-sensitive cell 770 is arranged on imaging surface 760.Wherein, take the photograph
It it is four as having the lens of refracting power in system lens set.
First lens 710 have positive refracting power, and are plastic cement material, and its thing side surface 711 is convex surface at dipped beam axle, its
Image side surface 712 is convex surface at dipped beam axle, and its two surface is all aspherical.
Second lens 720 have positive refracting power, and are plastic cement material, and its thing side surface 721 is convex surface at dipped beam axle, its
Image side surface 722 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 730 have positive refracting power, and are plastic cement material, and its thing side surface 731 is concave surface at dipped beam axle, its
Image side surface 732 is convex surface at dipped beam axle, and its two surface is all aspherical, the 3rd lens thing side surface 731 and image side surface
732 all have the point of inflexion.
4th lens 740 have negative refracting power, and are plastic cement material, and its thing side surface 741 is convex surface at dipped beam axle, its
Image side surface 742 is concave surface at dipped beam axle, and its two surface is all aspherical, and the 4th lens image side surface 742 has the point of inflexion.
The material that infrared ray filters out optical filter 750 is glass, and it is arranged between the 4th lens 740 and imaging surface 760, and
The focal length of camera system lens set is not influenceed.
It please coordinate with reference to following table 13 and table 14.
In 7th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Know those skilled in the art when can be made according to the present invention it is various it is corresponding change and deformation, but these corresponding change and become
Shape should all belong to the protection domain of appended claims of the invention.
Claims (25)
1. a kind of camera system lens set, it is characterised in that sequentially included by thing side to image side：
One first lens, there is positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is at dipped beam axle
Convex surface；
One second lens, there is positive refracting power；
One the 3rd lens, there is positive refracting power；And
One the 4th lens, there is negative refracting power, its image side surface is concave surface at dipped beam axle, and its thing side surface and image side surface are all
To be aspherical, and the 4th lens image side surface has an at least point of inflexion；
Wherein, lens sum is four in the camera system lens set, and all has gap between wantonly two adjacent lens；
Wherein, the focal length of the camera system lens set is f, and the focal length of second lens is f2, and the second lens achromatic coefficient is
V2, second lens are CT2 in the thickness on optical axis, and first lens are in the spacing distance on optical axis with second lens
T12, it meets following condition：
0 ＜ f/f2 ＜ 0.5；
V2 ＜ 32；And
0.75 ＜ T12/CT2 ＜ 2.5.
2. the camera system lens set described in as requested 1, it is characterised in that to be recessed at the 3rd lens thing side surface dipped beam axle
Face, it is convex surface at the 3rd lens image side surface dipped beam axle.
3. the camera system lens set described in as requested 1, it is characterised in that the radius of curvature of the second lens thing side surface is
R3, the radius of curvature on the second lens image side surface is R4, and it meets following condition：
| (R3-R4)/(R3+R4) | ＜ 1.25.
4. the camera system lens set described in as requested 1, it is characterised in that the second lens image side surface is at dipped beam axle
Convex surface.
5. the camera system lens set described in as requested 1, it is characterised in that the 4th lens are CT4 in the thickness on optical axis,
3rd lens are T34 in the spacing distance on optical axis with the 4th lens, and it meets following condition：
0.25 ＜ T34/CT4 ＜ 1.0.
6. the camera system lens set described in as requested 1, it is characterised in that first lens are CT1 in the thickness on optical axis,
Second lens are CT2 in the thickness on optical axis, and first lens and second lens are T12 in the spacing distance on optical axis,
Second lens are T23 in the spacing distance on optical axis with the 3rd lens, and it meets following condition：
0.3 ＜ (T12+CT2+T23)/CT1 ＜ 1.9.
7. the camera system lens set described in as requested 1, it is characterised in that the radius of curvature of the first lens thing side surface is
R1, the radius of curvature on the first lens image side surface is R2, and it meets following condition：
- 1.0 ＜ (R1+R2)/(R1-R2) ＜ 0.3.
8. the camera system lens set described in as requested 1, it is characterised in that the camera system lens set separately includes an aperture,
The aperture is placed in the thing side direction of first lens, and first lens, second lens, the 3rd lens and the 4th lens
Material be all plastic cement material.
9. the camera system lens set described in as requested 1, it is characterised in that the focal length of the camera system lens set is f, and this
The focal length of one lens is f1, and it meets following condition：
0.6 ＜ f/f1 ＜ 1.2.
10. the camera system lens set described in as requested 1, it is characterised in that the 3rd lens have an at least point of inflexion.
11. the camera system lens set described in as requested 1, it is characterised in that the second lens thing side surface is at dipped beam axle
For concave surface.
12. the camera system lens set described in as requested 1, it is characterised in that the radius of curvature of the 4th lens thing side surface
For R7, the radius of curvature on the 4th lens image side surface is R8, and it meets following condition：
0 ＜ (R7+R8)/(R7-R8).
13. the camera system lens set described in as requested 1, it is characterised in that the 4th lens thing side surface is at dipped beam axle
For convex surface.
14. a kind of camera system lens set, it is characterised in that sequentially included by thing side to image side：
One first lens, there is positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is at dipped beam axle
Convex surface；
One second lens, have positive refracting power, and its image side surface is convex surface at dipped beam axle；
One the 3rd lens, there is positive refracting power；And
One the 4th lens, there is negative refracting power, its image side surface is concave surface at dipped beam axle, and its thing side surface and image side surface are all
To be aspherical, and the 4th lens image side surface has an at least point of inflexion；
Wherein, lens sum is four in the camera system lens set, and all has gap between wantonly two adjacent lens；
Wherein, the focal length of the camera system lens set is f, and the focal length of second lens is f2, and the second lens achromatic coefficient is
V2, it meets following condition：
0 ＜ f/f2 ＜ 0.5；And
V2 ＜ 32.
15. the camera system lens set described in as requested 14, it is characterised in that be at the 3rd lens thing side surface dipped beam axle
Concave surface, it is convex surface at the 3rd lens image side surface dipped beam axle.
16. the camera system lens set described in as requested 14, it is characterised in that the radius of curvature of the second lens thing side surface
For R3, the radius of curvature on the second lens image side surface is R4, and it meets following condition：
| (R3-R4)/(R3+R4) | ＜ 1.25.
17. the camera system lens set described in as requested 14, it is characterised in that the 4th lens are in the thickness on optical axis
CT4, the 3rd lens are T34 in the spacing distance on optical axis with the 4th lens, and it meets following condition：
0.25 ＜ T34/CT4 ＜ 1.0.
18. the camera system lens set described in as requested 14, it is characterised in that first lens are in the thickness on optical axis
CT1, second lens are CT2 in the thickness on optical axis, and first lens are in the spacing distance on optical axis with second lens
T12, second lens are T23 in the spacing distance on optical axis with the 3rd lens, and it meets following condition：
0.3 ＜ (T12+CT2+T23)/CT1 ＜ 1.9.
19. the camera system lens set described in as requested 14, it is characterised in that the radius of curvature of the first lens thing side surface
For R1, the radius of curvature on the first lens image side surface is R2, and it meets following condition：
- 1.0 ＜ (R1+R2)/(R1-R2) ＜ 0.3.
20. the camera system lens set described in as requested 14, it is characterised in that the camera system lens set separately includes a light
Circle, the aperture are placed in the thing side direction of first lens, and first lens, second lens, the 3rd lens and the 4th
The material of lens is all plastic cement material.
21. the camera system lens set described in as requested 14, it is characterised in that the focal length of the camera system lens set is f, should
The focal length of first lens is f1, and it meets following condition：
0.6 ＜ f/f1 ＜ 1.2.
22. the camera system lens set described in as requested 14, it is characterised in that the 3rd lens have an at least point of inflexion.
23. the camera system lens set described in as requested 14, it is characterised in that the second lens thing side surface is at dipped beam axle
For concave surface.
24. the camera system lens set described in as requested 14, it is characterised in that the radius of curvature of the 4th lens thing side surface
For R7, the radius of curvature on the 4th lens image side surface is R8, and it meets following condition：
0 ＜ (R7+R8)/(R7-R8).
25. the camera system lens set described in as requested 14, it is characterised in that the 4th lens thing side surface is at dipped beam axle
For convex surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610300920.4A CN105717616B (en) | 2013-08-13 | 2013-08-13 | Camera system lens set |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610300920.4A CN105717616B (en) | 2013-08-13 | 2013-08-13 | Camera system lens set |
| CN201310351251.XA CN104280861B (en) | 2013-07-05 | 2013-08-13 | Image capturing lens assembly and image capturing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310351251.XA Division CN104280861B (en) | 2013-07-05 | 2013-08-13 | Image capturing lens assembly and image capturing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105717616A CN105717616A (en) | 2016-06-29 |
| CN105717616B true CN105717616B (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610300920.4A Active CN105717616B (en) | 2013-08-13 | 2013-08-13 | Camera system lens set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031950B (en) * | 2018-01-11 | 2021-05-04 | 余姚舜宇智能光学技术有限公司 | Camera optical lens group and electronic equipment |
| CN109814235B (en) * | 2018-12-28 | 2022-02-08 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127953A (en) * | 2005-11-07 | 2007-05-24 | Konica Minolta Opto Inc | Imaging optical system, imaging lens device and digital equipment |
| CN201926810U (en) * | 2010-12-15 | 2011-08-10 | 大立光电股份有限公司 | Optic photographic lens set |
| TW201239441A (en) * | 2011-03-16 | 2012-10-01 | Largan Precision Co | Optical lens assembly for image photographing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5322582B2 (en) * | 2008-10-30 | 2013-10-23 | 三洋電機株式会社 | Lens device, photographing device |
-
2013
- 2013-08-13 CN CN201610300920.4A patent/CN105717616B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127953A (en) * | 2005-11-07 | 2007-05-24 | Konica Minolta Opto Inc | Imaging optical system, imaging lens device and digital equipment |
| CN201926810U (en) * | 2010-12-15 | 2011-08-10 | 大立光电股份有限公司 | Optic photographic lens set |
| TW201239441A (en) * | 2011-03-16 | 2012-10-01 | Largan Precision Co | Optical lens assembly for image photographing |
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| CN105717616A (en) | 2016-06-29 |
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