CN102902044B - Optical lens for photograph shooting - Google Patents

Optical lens for photograph shooting Download PDF

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Publication number
CN102902044B
CN102902044B CN201210371825.5A CN201210371825A CN102902044B CN 102902044 B CN102902044 B CN 102902044B CN 201210371825 A CN201210371825 A CN 201210371825A CN 102902044 B CN102902044 B CN 102902044B
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lens
photographing optical
optical lens
thing side
focal length
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CN102902044A (en
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陈俊杉
汤相岐
蔡宗翰
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Largan Precision Co Ltd
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Largan Precision Co Ltd
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Abstract

The invention discloses an optical lens for photograph shooting. The optical lens comprises a first lens with positive inflectional force, a second lens with negative inflectional force, a third lens with positive inflectional force and a fourth lens with negative inflectional force which are arranged from the object side to the image side in sequence, wherein the object-side surface of the first lens is convex; the image-side surface of the second lens is concave; and the image-side surface of the fourth lens is concave, and the surfaces on the object-side surface and the image-side surface of the fourth lens are both aspheric. The optical lens for photograph shooting is further provided with an aperture and an electronic photosensitive element, wherein the aperture is arranged between the first lens and the second lens, and the electronic photosensitive element is arranged at the position of an imaging surface and used for enabling an object to be shot to form an image. The optical lens for photograph shooting is provided with four lenses with inflectional force. By means of the configuration mode of a lens group, the size of the lens can be effectively reduced, sensitiveness of an optical system is reduced, and large resolution power can be obtained.

Description

Photographing optical lens
The present invention is to be the divisional application that May 18, application number in 2010 are 201010182932.4, denomination of invention is photographing optical lens the applying date.
Technical field
The invention relates to a kind of photographing optical lens; Particularly about a kind of miniaturization photographing optical lens that reduces optical system susceptibility and there is high resolution.
Background technology
The commonly see miniaturization photographing optical lens of tool high resolution, preposition aperture and the optical systems containing four pieces of lens of adopting more, wherein, first lens and the second lens are often bonded to each other with two pieces of glass spherical lenses and become a pair of and close lens (Doublet Lens), in order to color difference eliminating, as United States Patent (USP) the 7th, shown in 365, No. 920, but the method has its shortcoming, one, too much spherical lens configuration makes degree of freedom in system deficiency, causes the optics total length of system to be difficult for shortening, and they are two years old, the bonding processing procedure of glass mirror is difficult for, and causes the difficulty in manufacture.United States Patent (USP) the 7th, 277, provide a kind of lens combination of four pieces of separate lenses No. 238, include multiple non-spherical lenses, can effectively shorten the optics total length of system, and obtain good image quality, but due to before its aperture is arranged at first lens, the susceptibility of system is also improved relatively, to manufacturing the comparatively difficulty of control of upper yield.
Summary of the invention
The invention provides a kind of photographing optical lens, extremely sequentially comprised as side by thing side: the first lens of the positive refracting power of a tool, its thing side surface is convex surface; The second lens of the negative refracting power of one tool, it is concave surface as side surface; The 3rd lens of the positive refracting power of one tool, its thing side surface is concave surface and is convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in side surface; And the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, its thing side surface be provided with at least one point of inflexion as at least one surface in side surface; Wherein, this photographing optical lens is separately provided with an aperture and a sense electronics optical element, this aperture is arranged between this first lens and this second lens, and this sense electronics optical element is arranged at imaging surface place for object imaging, and in this photographing optical lens, the lens of tool refracting power are four; The focal length of entirety photographing optical lens is f, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of the 3rd lens is R5 and is R6 as side surface radius-of-curvature, the abbe number of this first lens is V1, the abbe number of these the second lens is V2, to imaging surface, the distance on optical axis is SL to this aperture, and the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, meets lower note relational expression:
-2.5<f／f4<-1.8；
2.0<(R5+R6)/(R5-R6)<5.0；
31.0<V1-V2<42.0; And
0.77<SL/TTL<0.92。
The present invention, by the configuration mode of above-mentioned mirror group, can effectively dwindle the susceptibility of camera lens volume, reduction optical system, more can obtain higher resolving power.
In the aforementioned photographing optical lens of the present invention, the positive refracting power of first lens tool, provides system refracting power, contributes to shorten the optics total length of system; The second lens tool is born refracting power, aberration that can update the system; The positive refracting power of the 3rd lens tool, can effectively distribute the refracting power of this first lens, contributes to reduce the susceptibility of system; The 4th lens tool is born refracting power, and its effect is as correction lens, can balance and every aberration of producing of update the system.
The crescent lens that biconvex lens or the thing side surface that in photographing optical lens of the present invention, this first lens can be a thing side surface, be all convex surface as side surface be convex surface, be concave surface as side surface; In the time that this first lens is a biconvex lens, can effectively strengthens the refracting power configuration of this first lens, and then make the total length of this photographing optical lens become shorter; In the time that this first lens is the crescent lens of a convex-concave, comparatively favourable for the spherical aberration (Spherical Aberration) of update the system.These the second lens be concave surface as side surface, the effectively Petzval of update the system and number (Petzval Sum), and can increase the back focal length of system, to guarantee that this photographing optical lens has enough back focal length can place other member; In the time that these second lens are a biconcave lens, selection that can compounding ingredient is to help update the system aberration; In the time that these second lens are the crescent lens of a convex-concave, are beneficial to update the system astigmatism (Astigmatism), and reduce system sensitivity.When the thing side surface of the 3rd lens is concave surface and while being convex surface as side surface, can contribute to update the system higher order aberratons.The 4th lens can be the crescent lens of a biconcave lens or a convex-concave, when the thing side surface of the 4th lens and while being all concave surface as side surface, can make the principal point (principal point) of optical system away from imaging surface, be conducive to shorten the optics total length of system, to maintain the miniaturization of camera lens; When the thing side surface of the 4th lens is convex surface and while being concave surface as side surface, can contribute to astigmatism and the higher order aberratons of update the system.
In the aforementioned photographing optical lens of the present invention, this aperture can be placed between this first lens and this second lens.Provide positive refracting power by this first lens and the 3rd lens, and aperture is placed in to the object side that approaches this photographing optical lens, can effectively shorten the optics total length of this photographing optical lens, in addition, above-mentioned configuration can make the outgoing pupil (Exit Pupil) of this photographing optical lens away from imaging surface, therefore, light will be incident on photo-sensitive cell in the mode that approaches vertical incidence, this is the heart far away (Telecentric) characteristic of picture side, heart characteristic far away is very important for the photoperceptivity of solid-state electronic photo-sensitive cell at present, the sensitization susceptibility that makes sense electronics optical element is improved, minimizing system produces the possibility at dark angle.In addition, can on the 4th lens, be provided with the point of inflexion, be incident in the angle on photo-sensitive cell by more effectively suppressing from the light of axle visual field, and the further aberration of modified off-axis visual field.In addition, in wide-angle optics, need to revise distortion (Distortion) and multiplying power look receipts poor (Chromatic Aberration of Magnification) especially, its method is for to be placed in system light flexion equilibrium of forces place by aperture, therefore in the aforementioned photographing optical lens of the present invention, aperture being placed between this first lens and this second lens, is to be conducive to shortening camera lens volume and reducing between system sensitivity and obtain good balance.
Brief description of the drawings
Fig. 1 is the photographing optical lens schematic diagram of first embodiment of the invention;
Fig. 2 is the aberration curve figure of first embodiment of the invention;
Fig. 3 is the photographing optical lens schematic diagram of second embodiment of the invention;
Fig. 4 is the aberration curve figure of second embodiment of the invention;
Fig. 5 is the photographing optical lens schematic diagram of third embodiment of the invention;
Fig. 6 is the aberration curve figure of third embodiment of the invention;
Fig. 7 is the photographing optical lens schematic diagram of fourth embodiment of the invention;
Fig. 8 is the aberration curve figure of fourth embodiment of the invention;
Fig. 9 is the photographing optical lens schematic diagram of fifth embodiment of the invention;
Figure 10 is the aberration curve figure of fifth embodiment of the invention;
Figure 11 is the photographing optical lens schematic diagram of sixth embodiment of the invention;
Figure 12 is the aberration curve figure of sixth embodiment of the invention;
Figure 13 is the photographing optical lens schematic diagram of seventh embodiment of the invention;
Figure 14 is the aberration curve figure of seventh embodiment of the invention;
Figure 15 is table one, is the optical data of first embodiment of the invention;
Figure 16 is table two, is the aspherical surface data of first embodiment of the invention;
Figure 17 is table three, is the optical data of second embodiment of the invention;
Figure 18 A, Figure 18 B are table four A and table four B, are the aspherical surface data of second embodiment of the invention;
Figure 19 is table five, is the optical data of third embodiment of the invention;
Figure 20 A, Figure 20 B are table six A and table six B, are the aspherical surface data of third embodiment of the invention;
Figure 21 is table seven, is the optical data of fourth embodiment of the invention;
Figure 22 A, Figure 22 B are table eight A and table eight B, are the aspherical surface data of fourth embodiment of the invention;
Figure 23 is table nine, is the optical data of fifth embodiment of the invention;
Figure 24 A, Figure 24 B are table ten A and table ten B, are the aspherical surface data of fifth embodiment of the invention;
Figure 25 is table ten one, is the optical data of sixth embodiment of the invention;
Figure 26 A, Figure 26 B are table ten two A and table ten two B, are the aspherical surface data of sixth embodiment of the invention;
Figure 27 is table ten three, is the optical data of seventh embodiment of the invention;
Figure 28 A, Figure 28 B are table ten four A and table ten four B, are the aspherical surface data of seventh embodiment of the invention;
Figure 29 is table ten five, is the numerical data of first embodiment of the invention to the seven embodiment correlationship formulas.
Main element symbol description:
Aperture 100,300,500,700,900,1100,1300
First lens 110,310,510,710,910,1110,1310
Thing side surface 111,311,511,711,911,1111,1311
Picture side surface 112,312,512,712,912,1112,1312
The second lens 120,320,520,720,920,1120,1320
Thing side surface 121,321,521,721,921,1121,1321
Picture side surface 122,322,522,722,922,1122,1322
The 3rd lens 130,330,530,730,930,1130,1330
Thing side surface 131,331,531,731,931,1131,1331
Picture side surface 132,332,532,732,932,1132,1332
The 4th lens 140,340,540,740,940,1140,1340
Thing side surface 141,341,541,741,941,1141,1341
Picture side surface 142,342,542,742,942,1142,1342
Infrared ray filtering optical filter 150,350,550,750,950,1150,1350
Imaging surface 160,360,560,760,960,1160,1360
The focal length of entirety photographing optical lens is f
The focal length of first lens is f1
The focal length of the 3rd lens is f3
The focal length of the 4th lens is f4
The synthetic focal length of first lens and the second lens is f12
The abbe number of first lens is V1
The abbe number of the second lens is V2
First lens and the spacing distance of the second lens on optical axis are T12
The thing side surface radius-of-curvature of first lens is R1
First lens be R2 as side surface radius-of-curvature
The thing side surface radius-of-curvature of the second lens is R3
The second lens be R4 as side surface radius-of-curvature
The thing side surface radius-of-curvature of the 3rd lens is R5
The 3rd lens be R6 as side surface radius-of-curvature
The f-number of entirety photographing optical lens is Fno
In photographing optical lens, the half at maximum visual angle is HFOV
To imaging surface, the distance on optical axis is SL to aperture
The thing side surface of first lens to the distance of sense electronics optical element on optical axis is TTL
The half of sense electronics optical element effective pixel area diagonal line length is ImgH
Embodiment
The invention provides a kind of photographing optical lens, by thing side to sequentially comprising as side: the first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface, the second lens of the negative refracting power of one tool, its thing side surface and be all concave surface as side surface, the 3rd lens of the positive refracting power of one tool, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, wherein, this photographing optical lens is separately provided with an aperture and a sense electronics optical element, this aperture system is arranged between this first lens and this second lens, this sense electronics optical element system is arranged at imaging surface place for object imaging, and in this photographing optical lens, the lens of tool refracting power are four, the focal length of entirety photographing optical lens is f, the focal length of this first lens is f1, the focal length of the 3rd lens is f3, the thing side surface radius-of-curvature of this first lens is R1, the thing side surface radius-of-curvature of the 3rd lens is R5 and is R6 as side surface radius-of-curvature, to imaging surface, the distance on optical axis is SL to this aperture, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, system meets lower note relational expression:
-0.27<(f/f1)-(f／f3)<-0.05；
0.2<R1/f<0.5；
1.40<R5/R6<4.30; And
0.77<SL/TTL<0.92。
When (f1)-(f/f3) meet above-mentioned relation formula, effectively the required positive refracting power of distribution system, avoids the refracting power of single lens excessive, and then effectively reduces the susceptibility of system.In the time that R1/f meets above-mentioned relation formula, can provide this first lens enough positive refracting powers, can not produce too much higher order aberratons simultaneously.In the time that R5/R6 meets above-mentioned relation formula, be conducive to the astigmatism of update the system.In the time that SL/TTL meets above-mentioned relation formula, be conducive to shortening camera lens volume and reducing between system sensitivity and obtain good balance.
In the aforementioned photographing optical lens of the present invention, preferably, the thing side surface of the 3rd lens is concave surface and is convex surface as side surface, and it can help update the system astigmatism; Preferably, the thing side surface of the 4th lens is convex surface and is concave surface as side surface, astigmatism and the higher order aberratons that can contribute to update the system to produce.
In the aforementioned photographing optical lens of the present invention, preferably, the material of the 4th lens can be plastic cement, and plastic cement material lens are not only conducive to the making of non-spherical lens, more can effectively reduce production costs.
In the aforementioned photographing optical lens of the present invention, the focal length of overall photographing optical lens is f, and the focal length of this first lens is f1, preferably, meets lower note relational expression: 1.43<f/f1<2.20.In the time that f/f1 meets above-mentioned relation formula, the comparatively balance of refracting power size configure of this first lens, the effectively optics total length of control system, and can avoid the excessive increase of high-order spherical aberration (High Order Spherical Aberration), with Hoisting System image quality simultaneously; Further, better system meets lower note relational expression: 1.53<f/f1<2.00.
In the aforementioned photographing optical lens of the present invention, the abbe number of this first lens is V1, and the abbe number of these the second lens is V2, preferably, is to meet lower note relational expression: 31.0<V1-V2<42.0; In the time that V1-V2 meets above-mentioned relation formula, be conducive to the correction of aberration in photographing optical lens.
In the aforementioned photographing optical lens of the present invention, the thing side surface radius-of-curvature of the 3rd lens is R5 and is R6 as side surface radius-of-curvature, preferably, is to meet lower note relational expression: 1.85<R5/R6<3.50; In the time that R5/R6 meets above-mentioned relation formula, be conducive to the astigmatism of update the system.
In the aforementioned photographing optical lens of the present invention, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, preferably, is to meet lower note relational expression :-1.2<f3/f4<-0.8; In the time that f3/f4 meets above-mentioned relation formula, be conducive to guarantee positive negative looking in the distance (Telephoto) structure of the 3rd lens and the formation of the 4th lens, can effectively reduce system optics total length.
In the aforementioned photographing optical lens of the present invention, the thing side surface radius-of-curvature of this first lens is R1 and is R2 as side surface radius-of-curvature, preferably, is to meet lower note relational expression :-1.00<R1/R2<-0.05; In the time that R1/R2 meets above-mentioned relation formula, can be conducive to the correction of system spherical aberration.
In the aforementioned photographing optical lens of the present invention, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens is f4, preferably, is to meet lower note relational expression :-2.5<f/f4<-1.5; In the time that f/f4 meets above-mentioned relation formula, can effectively revise the aberration that the 3rd lens produce, with Hoisting System image quality.
In the aforementioned photographing optical lens of the present invention, the thing side surface radius-of-curvature of these the second lens is R3 and is R4 as side surface radius-of-curvature, preferably, is to meet lower note relational expression :-10.0<R3/R4<-1.0; In the time that R3/R4 meets above-mentioned relation formula, be conducive to the negative refracting power that provides these second lens enough, with the aberration of update the system.
In the aforementioned photographing optical lens of the present invention, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, preferably, be to meet lower note relational expression: TTL/ImgH<2.1; In the time that TTL/ImgH meets above-mentioned relation formula, be conducive to maintain the miniaturization of this photographing optical lens, to be equipped on the electronic product of frivolous miniaturization.
On the other hand, the invention provides a kind of photographing optical lens, by thing side to sequentially comprising as side: the first lens of the positive refracting power of a tool, its thing side surface and be all convex surface as side surface, the second lens of the negative refracting power of one tool, it is concave surface as side surface, the 3rd lens of the positive refracting power of one tool, its thing side surface is concave surface and is convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in side surface, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, its thing side surface be provided with at least one point of inflexion as at least one surface in side surface, wherein, this photographing optical lens is separately provided with an aperture and a sense electronics optical element, this aperture system is arranged between this first lens and this second lens, this sense electronics optical element system is arranged at imaging surface place for object imaging, and in this photographing optical lens, the lens of tool refracting power are four, the focal length of entirety photographing optical lens is f, the focal length of this first lens is f1, the focal length of the 3rd lens is f3, the abbe number of this first lens is V1, the abbe number of these the second lens is V2, the thing side surface radius-of-curvature of this first lens is R1 and is R2 as side surface radius-of-curvature, the thing side surface radius-of-curvature of the 3rd lens is R5 and is R6 as side surface radius-of-curvature, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, to imaging surface, the distance on optical axis is SL to this aperture, the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, system meets lower note relational expression:
-0.27<(f/f1)-(f／f3)<-0.05；
31.0<V1-V2<42.0；
-2.00<R1／R2<-0.01；
1.40<R5／R6<4.30；
0.77<SL/TTL<0.92; And
TTL/ImgH<1.95。
When (f1)-(f/f3) meet above-mentioned relation formula, effectively the required positive refracting power of distribution system, avoids the refracting power of single lens excessive, and then effectively reduces the susceptibility of system.In the time that V1-V2 meets above-mentioned relation formula, be conducive to the correction of aberration in photographing optical lens.In the time that R1/R2 meets above-mentioned relation formula, can be conducive to the correction of system spherical aberration; Further, better system meets lower note relational expression :-1.00<R1/R2<-0.05.In the time that R5/R6 meets above-mentioned relation formula, be conducive to the astigmatism of update the system.In the time that SL/TTL meets above-mentioned relation formula, be conducive to shortening camera lens volume and reducing between system sensitivity and obtain good balance.In the time that TTL/ImgH meets above-mentioned relation formula, be conducive to maintain the miniaturization of this photographing optical lens, to be equipped on the electronic product of frivolous miniaturization.
In the aforementioned photographing optical lens of the present invention, preferably, the thing side surface of the 4th lens is convex surface and is concave surface as side surface, astigmatism and the higher order aberratons that can contribute to update the system to produce.
In the aforementioned photographing optical lens of the present invention, the focal length of the 3rd lens is f3, and the focal length of the 4th lens is f4, preferably, is to meet lower note relational expression :-1.2<f3/f4<-0.8; In the time that f3/f4 meets above-mentioned relation formula, be conducive to guarantee the 3rd lens and the 4th lens form a positive negative structure of looking in the distance can effectively reduce system optics total length.
In the aforementioned photographing optical lens of the present invention, this first lens and the spacing distance of these the second lens on optical axis are T12, the focal length of entirety photographing optical lens is f, preferably, is to meet lower note relational expression: 0.5< (T12/f) * 100<4.0; In the time that T12/f meets above-mentioned relation formula, can guarantee has enough spaces can place aperture between this first lens and this second lens, and so disposes the higher order aberratons that is beneficial to update the system.
In the aforementioned photographing optical lens of the present invention, the 4th lens be R8 as side surface radius-of-curvature, the focal length of entirety photographing optical lens is f, preferably, system meets lower note relational expression: 0.20<R8/f<0.35, in the time that R8/f meets above-mentioned relation formula, can shorten the back focal length of system, to reduce the optics total length of photographing optical lens.
In the aforementioned photographing optical lens of the present invention, the thing side surface radius-of-curvature of these the second lens is R3 and is R4 as side surface radius-of-curvature, preferably, is to meet lower note relational expression :-10.0<R3/R4<-1.0; In the time that R3/R4 meets above-mentioned relation formula, be conducive to the negative refracting power that provides these second lens enough, with the aberration of update the system.
In the aforementioned photographing optical lens of the present invention, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens is f4, preferably, is to meet lower note relational expression :-2.5<f/f4<-1.5; In the time that f/f4 meets above-mentioned relation formula, can effectively revise the aberration that the 3rd lens produce, with Hoisting System image quality.
In the aforementioned photographing optical lens of the present invention, the focal length of overall photographing optical lens is f, and the focal length of this first lens is f1, preferably, is to meet lower note relational expression: 1.53<f/f1<2.00; In the time that f/f1 meets above-mentioned relation formula, the comparatively balance of refracting power size configure of this first lens, the effectively optics total length of control system, and can avoid the excessive increase of high-order spherical aberration simultaneously, with Hoisting System image quality.
Again on the other hand, the invention provides a kind of photographing optical lens, extremely sequentially comprised as side by thing side: the first lens of the positive refracting power of a tool, its thing side surface is convex surface, the second lens of the negative refracting power of one tool, it is concave surface as side surface, the 3rd lens of the positive refracting power of one tool, its thing side surface is concave surface and is convex surface as side surface, and the thing side surface of the 3rd lens be aspheric surface as at least one surface in side surface, and the 4th lens of the negative refracting power of a tool, it is concave surface as side surface, and the thing side surface of the 4th lens and be all aspheric surface as side surface, its thing side surface be provided with at least one point of inflexion as at least one surface in side surface, wherein, this photographing optical lens is separately provided with an aperture and a sense electronics optical element, this aperture system is arranged between this first lens and this second lens, this sense electronics optical element system is arranged at imaging surface place for object imaging, and in this photographing optical lens, the lens of tool refracting power are four, the focal length of entirety photographing optical lens is f, the focal length of the 4th lens is f4, the thing side surface radius-of-curvature of the 3rd lens is R5 and is R6 as side surface radius-of-curvature, the abbe number of this first lens is V1, the abbe number of these the second lens is V2, to imaging surface, the distance on optical axis is SL to this aperture, the thing side surface of this first lens to the distance of this sense electronics optical element on optical axis is TTL, system meets lower note relational expression:
-2.5<f／f4<-1.5；
2.0<(R5+R6)/(R5-R6)<5.0；
31.0<V1-V2<42.0; And
0.77<SL/TTL<0.92。
In the time that f/f4 meets above-mentioned relation formula, can effectively revise the aberration that the 3rd lens produce, with Hoisting System image quality; Further, better system meets lower note relational expression :-2.2<f/f4<-1.8.When (R5+R6)/(R5-R6) meet above-mentioned relation formula, can control the shape of the 3rd lens, with modified off-axis aberration; Further, better system meets lower note relational expression: 2.2< (R5+R6)/(R5-R6) <2.8.In the time that V1-V2 meets above-mentioned relation formula, be conducive to the correction of aberration in photographing optical lens.In the time that SL/TTL meets above-mentioned relation formula, be conducive to shortening camera lens volume and reducing between system sensitivity and obtain good balance.
In the aforementioned photographing optical lens of the present invention, preferably, the thing side surface of the 4th lens is concave surface, can make the principal point of optical system away from imaging surface, is conducive to shorten the optics total length of system, to maintain the miniaturization of camera lens; Preferably, the thing side surface of these the second lens is concave surface, the effectively Petzval of update the system and number, and can increase the back focal length of system, to guarantee that this photographing optical lens has enough back focal length can place other member.
In the aforementioned photographing optical lens of the present invention, this first lens and the spacing distance of these the second lens on optical axis are T12, the focal length of entirety photographing optical lens is f, preferably, is to meet lower note relational expression: 0.5< (T12/f) * 100<4.0; In the time that T12/f meets above-mentioned relation formula, can guarantee has enough spaces can place aperture between this first lens and this second lens, and so disposes the higher order aberratons that is beneficial to update the system.
In photographing optical lens of the present invention, the material of lens can be glass or plastic cement, if the material of lens is glass, can increase the degree of freedom of system refracting power configuration, if lens material is plastic cement, can effectively reduce production costs.In addition, aspheric surface can be set on lens surface, aspheric surface can easily be made into the shape beyond sphere, obtain more controlled variable, in order to subdue aberration, and then reduce the number that lens use, and can effectively reduce the optics total length of photographing optical lens of the present invention.
In photographing optical lens of the present invention, if lens surface is convex surface, represent that this lens surface is convex surface in paraxial place; If lens surface is concave surface, represent that this lens surface is concave surface in paraxial place.
Photographing optical lens of the present invention will coordinate institute's accompanying drawing to be described in detail by following specific embodiment.
The first embodiment
First embodiment of the invention refers to Fig. 1, and the aberration curve of the first embodiment refers to Fig. 2.The photographing optical lens of the first embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 110 of the positive refracting power of one tool, its thing side surface 111 is that convex surface and picture side surface 112 are convex surface, its material is plastic cement, the thing side surface 111 of this first lens 110 and be all aspheric surface as side surface 112;
The second lens 120 of the negative refracting power of one tool, its thing side surface 121 be that concave surface and picture side surface 122 are concave surface, its material is plastic cement, the thing side surface 121 of these the second lens 120 and be all aspheric surface as side surface 122;
The 3rd lens 130 of the positive refracting power of one tool, its thing side surface 131 is that concave surface and picture side surface 132 are convex surface, its material is plastic cement, the thing side surface 131 of the 3rd lens 130 and be all aspheric surface as side surface 132;
The 4th lens 140 of the negative refracting power of one tool, its thing side surface 141 is that concave surface and picture side surface 142 are concave surface, its material is plastic cement, the thing side surface 141 of the 4th lens 140 and be all aspheric surface as side surface 142, and the thing side surface 141 of the 4th lens 140 be provided with at least one point of inflexion as at least one surface in side surface 142; And
One aperture 100 is placed between this first lens 110 and this second lens 120;
Separately include an infrared ray filtering optical filter (IR-filter) 150, be placed between the picture side surface 142 and an imaging surface 160 of the 4th lens 140; The material of this infrared ray filtering optical filter 150 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equation of above-mentioned aspheric curve is expressed as follows:
X ( Y ) = ( Y 2 / R ) / ( 1 + sqrt ( 1 - ( 1 + k ) * ( Y / R ) 2 ) ) + &Sigma; i ( Ai ) * ( Y i )
Wherein:
X: the point that in aspheric surface, distance optical axis is Y, itself and the relative height that is tangential on the tangent plane on summit on aspheric surface optical axis;
Y: the point in aspheric curve and the distance of optical axis;
K: conical surface coefficient;
Ai: i rank asphericity coefficient.
In the first embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=2.72 (millimeter).
In the first embodiment photographing optical lens, the f-number (f-number) of overall photographing optical lens is Fno, and its relational expression is: Fno=2.85.
In the first embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=33.1 (degree).
In the first embodiment photographing optical lens, the abbe number of this first lens 110 is V1, and the abbe number of these the second lens 120 is V2, and its relational expression is: V1-V2=32.5.
In the first embodiment photographing optical lens, first lens 110 and the spacing distance of the second lens 120 on optical axis are T12, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=2.2.
In the first embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 110 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.31.
In the first embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 120 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-5.26.
In the first embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 130 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=2.82; And (R5+R6)/(R5-R6)=2.10.
In the first embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 110 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.41.
In the first embodiment photographing optical lens, the 4th lens 140 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.35.
In the first embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 110 is f1, and its relational expression is: f/f1=1.68.
In the first embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 140 is f4, and its relational expression is: f/f4=-1.80.
In the first embodiment photographing optical lens, the focal length of the 3rd lens 130 is f3, and the focal length of the 4th lens 140 is f4, and its relational expression is: f3/f4=-0.97.
In the first embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 110 is f1, and the focal length of the 3rd lens 130 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.17.
In the first embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 160 places for object imaging thereon, this aperture 100 to the distance of imaging surface 160 on optical axis is SL, the thing side surface 111 of this first lens 110 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.85.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.80.
The detailed optical data of the first embodiment is as shown in Figure 15 table one, and its aspherical surface data is as shown in Figure 16 table two, and wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The second embodiment
Second embodiment of the invention refers to Fig. 3, and the aberration curve of the second embodiment refers to Fig. 4.The photographing optical lens of the second embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 310 of the positive refracting power of one tool, its thing side surface 311 is that convex surface and picture side surface 312 are convex surface, its material is plastic cement, the thing side surface 311 of this first lens 310 and be all aspheric surface as side surface 312;
The second lens 320 of the negative refracting power of one tool, its thing side surface 321 be that concave surface and picture side surface 322 are concave surface, its material is plastic cement, the thing side surface 321 of these the second lens 320 and be all aspheric surface as side surface 322;
The 3rd lens 330 of the positive refracting power of one tool, its thing side surface 331 is that concave surface and picture side surface 332 are convex surface, its material is plastic cement, the thing side surface 331 of the 3rd lens 330 and be all aspheric surface as side surface 332;
The 4th lens 340 of the negative refracting power of one tool, its thing side surface 341 is that concave surface and picture side surface 342 are concave surface, its material is plastic cement, the thing side surface 341 of the 4th lens 340 and be all aspheric surface as side surface 342, and the thing side surface 341 of the 4th lens 340 be provided with at least one point of inflexion as at least one surface in side surface 342; And
One aperture 300 is placed between this first lens 310 and this second lens 320;
Separately include an infrared ray filtering optical filter 350, be placed between the picture side surface 342 and an imaging surface 360 of the 4th lens 340; The material of this infrared ray filtering optical filter 350 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the second embodiment aspheric curve is as the pattern of the first embodiment.
In the second embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=4.57 (millimeter).
In the second embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.85.
In the second embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=31.8 (degree).
In the second embodiment photographing optical lens, the abbe number of this first lens 310 is V1, and the abbe number of these the second lens 320 is V2, and its relational expression is: V1-V2=32.5.
In the second embodiment photographing optical lens, this first lens 310 is T12 with the spacing distance of these the second lens 320 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=1.4.
In the second embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 310 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.06.
In the second embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 320 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-8.17.
In the second embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 330 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=1.98; And (R5+R6)/(R5-R6)=3.05.
In the second embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 310 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.32.
In the second embodiment photographing optical lens, the 4th lens 340 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.29.
In the second embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 310 is f1, and its relational expression is: f/f1=1.81.
In the second embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 340 is f4, and its relational expression is: f/f4=-2.00.
In the second embodiment photographing optical lens, the focal length of the 3rd lens 330 is f3, and the focal length of the 4th lens 340 is f4, and its relational expression is: f3/f4=-0.99.
In the second embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 310 is f1, and the focal length of the 3rd lens 330 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.19.
In the second embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 360 places for object imaging thereon, this aperture 300 to the distance of imaging surface 360 on optical axis is SL, the thing side surface 311 of this first lens 310 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.87.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.75.
The detailed optical data of the second embodiment is as shown in Figure 17 table three, and its aspherical surface data is as shown in Figure 18 A, table four A and Figure 18 B table four B, and wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The 3rd embodiment
Third embodiment of the invention refers to Fig. 5, and the aberration curve of the 3rd embodiment refers to Fig. 6.The photographing optical lens of the 3rd embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 510 of the positive refracting power of one tool, its thing side surface 511 is that convex surface and picture side surface 512 are convex surface, its material is plastic cement, the thing side surface 511 of this first lens 510 and be all aspheric surface as side surface 512;
The second lens 520 of the negative refracting power of one tool, its thing side surface 521 be that concave surface and picture side surface 522 are concave surface, its material is plastic cement, the thing side surface 521 of these the second lens 520 and be all aspheric surface as side surface 522;
The 3rd lens 530 of the positive refracting power of one tool, its thing side surface 531 is that concave surface and picture side surface 532 are convex surface, its material is plastic cement, the thing side surface 531 of the 3rd lens 530 and be all aspheric surface as side surface 532;
The 4th lens 540 of the negative refracting power of one tool, its thing side surface 541 is that convex surface and picture side surface 542 are concave surface, its material is plastic cement, the thing side surface 541 of the 4th lens 540 and be all aspheric surface as side surface 542, and the thing side surface 541 of the 4th lens 540 be provided with at least one point of inflexion as at least one surface in side surface 542; And
One aperture 500 is placed between this first lens 510 and this second lens 520;
Separately include an infrared ray filtering optical filter 550, be placed between the picture side surface 542 and an imaging surface 560 of the 4th lens 540; The material of this infrared ray filtering optical filter 550 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the 3rd embodiment aspheric curve is as the pattern of the first embodiment.
In the 3rd embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=3.76 (millimeter).
In the 3rd embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.50.
In the 3rd embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=30.6 (degree).
In the 3rd embodiment photographing optical lens, the abbe number of this first lens 510 is V1, and the abbe number of these the second lens 520 is V2, and its relational expression is: V1-V2=32.5.
In the 3rd embodiment photographing optical lens, this first lens 510 is T12 with the spacing distance of these the second lens 520 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=3.3.
In the 3rd embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 510 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.58.
In the 3rd embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 520 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-1.32.
In the 3rd embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 530 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=3.27; And (R5+R6)/(R5-R6)=1.88.
In the 3rd embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 510 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.48.
In the 3rd embodiment photographing optical lens, the 4th lens 540 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.26.
In the 3rd embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 510 is f1, and its relational expression is: f/f1=1.72.
In the 3rd embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 540 is f4, and its relational expression is: f/f4=-1.83.
In the 3rd embodiment photographing optical lens, the focal length of the 3rd lens 530 is f3, and the focal length of the 4th lens 540 is f4, and its relational expression is: f3/f4=-1.00.
In the 3rd embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 510 is f1, and the focal length of the 3rd lens 530 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.12.
In the 3rd embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 560 places for object imaging thereon, this aperture 500 to the distance of imaging surface 560 on optical axis is SL, the thing side surface 511 of this first lens 510 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.86.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=2.08.
The detailed optical data of the 3rd embodiment is as shown in Figure 19 table five, and its aspherical surface data is as shown in Figure 20 A, Figure 20 B table six A and table six B, and wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The 4th embodiment
Fourth embodiment of the invention refers to Fig. 7, and the aberration curve of the 4th embodiment refers to Fig. 8.The photographing optical lens of the 4th embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 710 of the positive refracting power of one tool, its thing side surface 711 is that convex surface and picture side surface 712 are convex surface, its material is plastic cement, the thing side surface 711 of this first lens 710 and be all aspheric surface as side surface 712;
The second lens 720 of the negative refracting power of one tool, its thing side surface 721 be that convex surface and picture side surface 722 are concave surface, its material is plastic cement, the thing side surface 721 of these the second lens 720 and be all aspheric surface as side surface 722;
The 3rd lens 730 of the positive refracting power of one tool, its thing side surface 731 is that concave surface and picture side surface 732 are convex surface, its material is plastic cement, the thing side surface 731 of the 3rd lens 730 and be all aspheric surface as side surface 732;
The 4th lens 740 of the negative refracting power of one tool, its thing side surface 741 is that convex surface and picture side surface 742 are concave surface, its material is plastic cement, the thing side surface 741 of the 4th lens 740 and be all aspheric surface as side surface 742, and the thing side surface 741 of the 4th lens 740 be provided with at least one point of inflexion as at least one surface in side surface 742; And
One aperture 700 is placed between this first lens 710 and this second lens 720;
Separately include an infrared ray filtering optical filter 750, be placed between the picture side surface 742 and an imaging surface 760 of the 4th lens 740; The material of this infrared ray filtering optical filter 750 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the 4th embodiment aspheric curve is as the pattern of the first embodiment.
In the 4th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=3.42 (millimeter).
In the 4th embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.80.
In the 4th embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=33.0 (degree).
In the 4th embodiment photographing optical lens, the abbe number of this first lens 710 is V1, and the abbe number of these the second lens 720 is V2, and its relational expression is: V1-V2=32.5.
In the 4th embodiment photographing optical lens, this first lens 710 is T12 with the spacing distance of these the second lens 720 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=3.1.
In the 4th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 710 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.09.
In the 4th embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 720 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=4.53.
In the 4th embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 730 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=2.81; And (R5+R6)/(R5-R6)=2.10.
In the 4th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 710 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.46.
In the 4th embodiment photographing optical lens, the 4th lens 740 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.27.
In the 4th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 710 is f1, and its relational expression is: f/f1=1.28.
In the 4th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 740 is f4, and its relational expression is: f/f4=-1.45.
In the 4th embodiment photographing optical lens, the focal length of the 3rd lens 730 is f3, and the focal length of the 4th lens 740 is f4, and its relational expression is: f3/f4=-0.96.
In the 4th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 710 is f1, and the focal length of the 3rd lens 730 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.24.
In the 4th embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 760 places for object imaging thereon, this aperture 700 to the distance of imaging surface 760 on optical axis is SL, the thing side surface 711 of this first lens 710 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.86.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.92.
The detailed optical data of the 4th embodiment is as shown in Figure 21 table seven, and its aspherical surface data is as shown in Figure 22 A, Figure 22 B table eight A and table eight B, and wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The 5th embodiment
Fifth embodiment of the invention refers to Fig. 9, and the aberration curve of the 5th embodiment refers to Figure 10.The photographing optical lens of the 5th embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 910 of the positive refracting power of one tool, its thing side surface 911 is that convex surface and picture side surface 912 are convex surface, its material is plastic cement, the thing side surface 911 of this first lens 910 and be all aspheric surface as side surface 912;
The second lens 920 of the negative refracting power of one tool, its thing side surface 921 be that concave surface and picture side surface 922 are concave surface, its material is plastic cement, the thing side surface 921 of these the second lens 920 and be all aspheric surface as side surface 922;
The 3rd lens 930 of the positive refracting power of one tool, its thing side surface 931 is that concave surface and picture side surface 932 are convex surface, its material is plastic cement, the thing side surface 931 of the 3rd lens 930 and be all aspheric surface as side surface 932;
The 4th lens 940 of the negative refracting power of one tool, its thing side surface 941 is that concave surface and picture side surface 942 are concave surface, its material is plastic cement, and the thing side surface 941 of the 4th lens 940 be all aspheric surface as side surface 942, the thing side surface 941 of the 4th lens 940 and be provided with at least one point of inflexion as at least one surface in side surface 942; And
One aperture 900 is placed between this first lens 910 and this second lens 920;
Separately include an infrared ray filtering optical filter 950, be placed between the picture side surface 942 and an imaging surface 960 of the 4th lens 940; The material of this infrared ray filtering optical filter 950 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the 5th embodiment aspheric curve is as the pattern of the first embodiment.
In the 5th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=2.92 (millimeter).
In the 5th embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.47.
In the 5th embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=33.1 (degree).
In the 5th embodiment photographing optical lens, the abbe number of this first lens 910 is V1, and the abbe number of these the second lens 920 is V2, and its relational expression is: V1-V2=32.5.
In the 5th embodiment photographing optical lens, this first lens 910 is T12 with the spacing distance of these the second lens 920 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=2.5.
In the 5th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 910 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.14.
In the 5th embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 920 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-2.94.
In the 5th embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 930 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=2.53; And (R5+R6)/(R5-R6)=2.31.
In the 5th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 910 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.36.
In the 5th embodiment photographing optical lens, the 4th lens 940 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.31.
In the 5th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 910 is f1, and its relational expression is: f/f1=1.68.
In the 5th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 940 is f4, and its relational expression is: f/f4=-1.83.
In the 5th embodiment photographing optical lens, the focal length of the 3rd lens 930 is f3, and the focal length of the 4th lens 940 is f4, and its relational expression is: f3/f4=-1.07.
In the 5th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 910 is f1, and the focal length of the 3rd lens 930 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.04.
In the 5th embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 960 places for object imaging thereon, this aperture 900 to the distance of imaging surface 960 on optical axis is SL, the thing side surface 911 of this first lens 910 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.83.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.71.
The detailed optical data of the 5th embodiment is as shown in Figure 23 table nine, and its aspherical surface data is as shown in Figure 24 A table ten A and Figure 24 B table ten B, and wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The 6th embodiment
Sixth embodiment of the invention refers to Figure 11, and the aberration curve of the 6th embodiment refers to Figure 12.The photographing optical lens of the 6th embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 1110 of the positive refracting power of one tool, its thing side surface 1111 is that convex surface and picture side surface 1112 are convex surface, its material is plastic cement, the thing side surface 1111 of this first lens 1110 and be all aspheric surface as side surface 1112;
The second lens 1120 of the negative refracting power of one tool, its thing side surface 1121 be that concave surface and picture side surface 1122 are concave surface, its material is plastic cement, the thing side surface 1121 of these the second lens 1120 and be all aspheric surface as side surface 1122;
The 3rd lens 1130 of the positive refracting power of one tool, its thing side surface 1131 is that concave surface and picture side surface 1132 are convex surface, its material is plastic cement, the thing side surface 1131 of the 3rd lens 1130 and be all aspheric surface as side surface 1132;
The 4th lens 1140 of the negative refracting power of one tool, its thing side surface 1141 is that concave surface and picture side surface 1142 are concave surface, its material is plastic cement, the thing side surface 1141 of the 4th lens 1140 and be all aspheric surface as side surface 1142, and the thing side surface 1141 of the 4th lens 1140 be provided with at least one point of inflexion as at least one surface in side surface 1142; And
One aperture 1100 is placed between this first lens 1110 and this second lens 1120;
Separately include an infrared ray filtering optical filter 1150, be placed between the picture side surface 1142 and an imaging surface 1160 of the 4th lens 1140; The material of this infrared ray filtering optical filter 1150 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the 6th embodiment aspheric curve is as the pattern of the first embodiment.
In the 6th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=2.92 (millimeter).
In the 6th embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.45.
In the 6th embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=31.5 (degree).
In the 6th embodiment photographing optical lens, the abbe number of this first lens 1110 is V1, and the abbe number of these the second lens (1120) is V2, and its relational expression is: V1-V2=32.5.
In the 6th embodiment photographing optical lens, this first lens 1110 is T12 with the spacing distance of these the second lens 1120 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=1.7.
In the 6th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 1110 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.35.
In the 6th embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 1120 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-2.16.
In the 6th embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 1130 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=2.26; And (R5+R6)/(R5-R6)=2.59.
In the 6th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 1110 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.41.
In the 6th embodiment photographing optical lens, the 4th lens 1140 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.30.
In the 6th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 1110 is f1, and its relational expression is: f/f1=1.71.
In the 6th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 1140 is f4, and its relational expression is: f/f4=-1.96.
In the 6th embodiment photographing optical lens, the focal length of the 3rd lens 1130 is f3, and the focal length of the 4th lens 1140 is f4, and its relational expression is: f3/f4=-0.98.
In the 6th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of first lens 1110 is f1, and the focal length of the 3rd lens 1130 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.29.
In the 6th embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 1160 places for object imaging thereon, this aperture 1100 to the distance of imaging surface 1160 on optical axis is SL, the thing side surface 1111 of this first lens 1110 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.87.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.94.
The detailed optical data of the 6th embodiment is as shown in Figure 25 table ten one, its aspherical surface data is as shown in Figure 26 A table ten two A and Figure 26 B table ten two B, wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
The 7th embodiment
Seventh embodiment of the invention refers to Figure 13, and the aberration curve of the 7th embodiment refers to Figure 14.The photographing optical lens of the 7th embodiment is mainly made up of four pieces of lens, is extremely sequentially comprised as side by thing side:
The first lens 1310 of the positive refracting power of one tool, its thing side surface 1311 is that convex surface and picture side surface 1312 are convex surface, its material is plastic cement, the thing side surface 1311 of this first lens 1310 and be all aspheric surface as side surface 1312;
The second lens 1320 of the negative refracting power of one tool, its thing side surface 1321 be that concave surface and picture side surface 1322 are concave surface, its material is plastic cement, the thing side surface 1321 of these the second lens 1320 and be all aspheric surface as side surface 1322;
The 3rd lens 1330 of the positive refracting power of one tool, its thing side surface 1331 is that concave surface and picture side surface 1332 are convex surface, its material is plastic cement, the thing side surface 1331 of the 3rd lens 1330 and be all aspheric surface as side surface 1332;
The 4th lens 1340 of the negative refracting power of one tool, its thing side surface 1341 is that concave surface and picture side surface 1342 are concave surface, its material is plastic cement, the thing side surface 1341 of the 4th lens 1340 and be all aspheric surface as side surface 1342, and the thing side surface 1341 of the 4th lens 1340 be provided with at least one point of inflexion as at least one surface in side surface 1342; And
One aperture 1300 is placed between this first lens 1310 and this second lens 1320;
Separately include an infrared ray filtering optical filter 1350, be placed between the picture side surface 1342 and an imaging surface 1360 of the 4th lens 1340; The material of this infrared ray filtering optical filter 1350 is the focal length that glass and its do not affect photographing optical lens of the present invention.
The equational expression of the 7th embodiment aspheric curve is as the pattern of the first embodiment.
In the 7th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and its relational expression is: f=2.74 (millimeter).
In the 7th embodiment photographing optical lens, the f-number of overall photographing optical lens is Fno, and its relational expression is: Fno=2.85.
In the 7th embodiment photographing optical lens, the half at the maximum visual angle of overall photographing optical lens is HFOV, and its relational expression is: HFOV=33.0 (degree).
In the 7th embodiment photographing optical lens, the abbe number of this first lens 1310 is V1, and the abbe number of these the second lens 1320 is V2, and its relational expression is: V1-V2=32.5.
In the 7th embodiment photographing optical lens, this first lens 1310 is T12 with the spacing distance of these the second lens 1320 on optical axis, and the focal length of overall photographing optical lens is f, and its relational expression is: (T12/f) * 100=2.4.
In the 7th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 1310 is R1 and is R2 as side surface radius-of-curvature, and its relational expression is: R1/R2=-0.26.
In the 7th embodiment photographing optical lens, the thing side surface radius-of-curvature of these the second lens 1320 is R3 and is R4 as side surface radius-of-curvature, and its relational expression is: R3/R4=-2.69.
In the 7th embodiment photographing optical lens, the thing side surface radius-of-curvature of the 3rd lens 1330 is R5 and is R6 as side surface radius-of-curvature, and its relational expression is: R5/R6=2.46; And (R5+R6)/(R5-R6)=2.37.
In the 7th embodiment photographing optical lens, the thing side surface radius-of-curvature of this first lens 1310 is R1, and the focal length of overall photographing optical lens is f, and its relational expression is: R1/f=0.41.
In the 7th embodiment photographing optical lens, the 4th lens 1340 be R8 as side surface radius-of-curvature, the focal length of overall photographing optical lens is f, its relational expression is: R8/f=0.31.
In the 7th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 1310 is f1, and its relational expression is: f/f1=1.62.
In the 7th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of the 4th lens 1340 is f4, and its relational expression is: f/f4=-2.00.
In the 7th embodiment photographing optical lens, the focal length of the 3rd lens 1330 is f3, and the focal length of the 4th lens 1340 is f4, and its relational expression is: f3/f4=-1.01.
In the 7th embodiment photographing optical lens, the focal length of overall photographing optical lens is f, and the focal length of this first lens 1310 is f1, and the focal length of the 3rd lens 1330 is f3, and its relational expression is: (f/f1)-(f/f3)=-0.35.
In the 7th embodiment photographing optical lens, this photographing optical lens separately arranges a sense electronics optical element in imaging surface 1360 places for object imaging thereon, this aperture 1300 to the distance of imaging surface 1360 on optical axis is SL, the thing side surface 1311 of this first lens 1310 is TTL to the distance of this sense electronics optical element on optical axis, and its relational expression is: SL/TTL=0.87.Moreover the half of this sense electronics optical element effective pixel area diagonal line length is ImgH, its relational expression is: TTL/ImgH=1.82.
The detailed optical data of the 7th embodiment is as shown in Figure 27 table ten three, its aspherical surface data is as shown in Figure 28 A table ten four A and Figure 28 B table ten four B, wherein the unit of radius-of-curvature, thickness and focal length is millimeter (mm), and HFOV is defined as the half at maximum visual angle.
Table one is depicted as the different numerical value change tables of photographing optical lens embodiment of the present invention to table ten four (corresponding Figure 15 to Figure 28 B respectively); so all true gained of testing of numerical value change of each embodiment of the present invention; even if use different numerical value; the product of same structure must belong to protection category of the present invention; therefore above explanation is described and accompanying drawing only as exemplary, non-in order to limit the scope of the invention.Table ten five (corresponding Figure 29) is the numerical data of the corresponding correlationship formula of the present invention of each embodiment.

Claims (4)

1. a photographing optical lens, is characterized in that, described camera lens is extremely sequentially comprised as side by thing side:
The first lens of the positive refracting power of one tool, its thing side surface is convex surface in paraxial place;
The second lens of the negative refracting power of one tool, its thing side surface is concave surface in paraxial place and is concave surface as side surface in paraxial place;
The 3rd lens of the positive refracting power of one tool, its thing side surface is concave surface in paraxial place and is convex surface as side surface in paraxial place, and the thing side surface of the 3rd described lens be aspheric surface as at least one surface in side surface; And
The 4th lens of the negative refracting power of one tool, it is concave surface as side surface in paraxial place, and the thing side surface of the 4th described lens and be all aspheric surface as side surface, its thing side surface be provided with at least one point of inflexion as at least one surface in side surface;
Wherein, described photographing optical lens is separately provided with an aperture and a sense electronics optical element, between first lens described in described aperture is arranged at and the second described lens, described sense electronics optical element is arranged at imaging surface place for object imaging, and in described photographing optical lens, the lens of tool refracting power are four, the focal length of entirety photographing optical lens is f, the focal length of the 4th described lens is f4, the thing side surface radius-of-curvature of the 3rd described lens is R5 and is R6 as side surface radius-of-curvature, the abbe number of described first lens is V1, the abbe number of the second described lens is V2, described aperture and the imaging surface distance on optical axis is SL, the thing side surface of described first lens to the distance of described sense electronics optical element on optical axis is TTL, meet lower note relational expression:
-2.5<f/f4<-1.8；
2.0<(R5+R6)/(R5-R6)<2.8；
31.0<V1-V2<42.0; And
0.77<SL/TTL<0.92。
2. photographing optical lens as claimed in claim 1, is characterized in that, the thing side surface radius-of-curvature of the 3rd described lens is R5 and is R6 as side surface radius-of-curvature, meets lower note relational expression:
2.2<(R5+R6)/(R5-R6)<2.8。
3. photographing optical lens as claimed in claim 2, is characterized in that, wherein the focal length of overall photographing optical lens is f, and the focal length of the 4th described lens is f4, meets lower note relational expression:
-2.2<f/f4<-1.8。
4. photographing optical lens as claimed in claim 3, it is characterized in that, the thing side surface of the 4th described lens is concave surface in paraxial place, and described first lens and described the second lens spacing distance on optical axis is T12, the focal length of entirety photographing optical lens is f, meets lower note relational expression:
0.5<(T12/f)*100<4.0。
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