CN106997084A - Optical lenses for image formation group, image-taking device and electronic installation - Google Patents

Optical lenses for image formation group, image-taking device and electronic installation Download PDF

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Publication number
CN106997084A
CN106997084A CN201610044563.XA CN201610044563A CN106997084A CN 106997084 A CN106997084 A CN 106997084A CN 201610044563 A CN201610044563 A CN 201610044563A CN 106997084 A CN106997084 A CN 106997084A
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China
Prior art keywords
lens
image
image formation
optical lenses
formation group
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Granted
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CN201610044563.XA
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Chinese (zh)
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CN106997084B (en
Inventor
黄歆璇
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Largan Precision Co Ltd
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Largan Precision Co Ltd
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Priority to CN201610044563.XA priority Critical patent/CN106997084B/en
Priority to CN201910134991.5A priority patent/CN109656001B/en
Priority to CN201910121050.8A priority patent/CN109683290B/en
Publication of CN106997084A publication Critical patent/CN106997084A/en
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Publication of CN106997084B publication Critical patent/CN106997084B/en
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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • 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

Abstract

The invention discloses a kind of optical lenses for image formation group, image-taking device and electronic installation, optical lenses for image formation group sequentially includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens by thing side to image side.Second lens have positive refracting power.3rd lens have positive refracting power.4th lens have positive refracting power.5th lens have positive refracting power.6th lens image side surface is concave surface at dipped beam axle.6th lens image side surface has an at least point of inflexion.The lens of optical lenses for image formation group are six.Invention additionally discloses the image-taking device with above-mentioned optical lenses for image formation group and the electronic installation with image-taking device.

Description

Optical lenses for image formation group, image-taking device and electronic installation
Technical field
It is more particularly to a kind of the present invention relates to a kind of optical lenses for image formation group, image-taking device and electronic installation Suitable for the optical lenses for image formation group and image-taking device of electronic installation.
Background technology
In recent years, flourishing with miniaturization phtographic lens, the demand of minisize image acquisition module is increasingly improved, And progressing greatly with semiconductor process technique so that the Pixel Dimensions of photo-sensitive cell reduce, along with electric now Sub- product is using the good and compact external form of function as development trend, therefore, possesses the small of good image quality Type phtographic lens becomes main flow in the market.
Due to Come high-orders intelligent mobile phone, Wearable device, tablet PC, driving recorder, sky in recent years The needs such as bat machine and image recognition system obtain the prevailing of the electronic installation of a wide range of image, and phtographic lens is to wide Visual angle and high-resolution demand are more and more harsh so that the image quality of conventional optical systems can not expire Requirement of the above-mentioned high-order electronic installation of foot to image quality.Therefore it provides can apply to high-order electronic installation simultaneously One of miniaturized optical system with high image quality, the problem of actually current industry is to be solved.
The content of the invention
It is an object of the invention to provide a kind of optical lenses for image formation group, image-taking device and electronic installation, Second lens of wherein optical lenses for image formation group have positive refracting power, it is possible to provide the enough light of thing side converges Cumulative power, helps to shorten total length and maintain it to minimize.3rd lens have positive refracting power, can be effective Light is balanced in the aggregate capabilities of thing side, excessive aberration is produced to avoid single lens refracting power excessive. 4th lens have positive refracting power, can lift the symmetry with the 3rd lens, are conducive to slowing down the generation of aberration. 5th lens have positive refracting power, help to increase the symmetry of imagery optical lens group, and then reduce quick Sensitivity is to lift image quality.6th lens image side surface is concave surface at dipped beam axle, can make principal point toward thing side Direction is moved, and helps to shorten back focal length and further shorten total length.6th lens image side surface has extremely Few point of inflexion, and the aberration contributed at further modified off-axis.When a specific condition is satisfied, it can balance Aperture position, effectively control light beam trend, to possess enough field of view angle and image height.In addition, There can be enough visual angles to carry out large-scale image capture, help to control total length, with up to miniaturization Purpose.In summary, the present invention can meet large aperture, wide viewing angle, miniaturization, good space configuration simultaneously And the demand such as high image quality.
The present invention provides a kind of optical lenses for image formation group, by thing side to image side sequentially comprising the first lens, the Two lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.Second lens have positive refracting power. 3rd lens have positive refracting power.4th lens have positive refracting power.5th lens have positive refracting power.The Six lens image side surfaces are concave surface at dipped beam axle.6th lens image side surface has an at least point of inflexion.Into The lens of picture optics lens group are six.Optical lenses for image formation group further includes an aperture.Aperture is to the 6th Lens image side surface is SD, the first lens thing side surface to the 6th lens image side surface in the distance on optical axis It is TD in the distance on optical axis, it meets following condition：
0.65<SD/TD。
The present invention separately provides a kind of image-taking device, and it includes foregoing optical lenses for image formation group and a sense electronicses Optical element, wherein, electronics photo-sensitive cell is arranged on the imaging surface of optical lenses for image formation group.
The present invention separately provides a kind of electronic installation, and it includes foregoing image-taking device.
The present invention a kind of optical lenses for image formation group is provided again, by thing side to image side sequentially comprising the first lens, Second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.Second lens have positive flexion Power.3rd lens have positive refracting power.4th lens have positive refracting power.5th lens have positive refracting power. 6th lens image side surface is concave surface at dipped beam axle.6th lens image side surface has an at least point of inflexion. First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are all single non- Bind lens.The lens of optical lenses for image formation group are six.The focal length of optical lenses for image formation group is f, First lens thing side surface a to imaging surface is TL in the distance on optical axis, and it meets following condition：
0.70<TL/f<2.85。
When SD/TD meets above-mentioned condition, aperture position can be balanced, effectively control light beam trend, to possess Enough field of view angle and image height.
When TL/f meets above-mentioned condition, there can be enough visual angles to carry out large-scale image capture, have Help control the total length of lens group, with up to the purpose of miniaturization.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as to the present invention's Limit.
Brief description of the drawings
Fig. 1 illustrates the image-taking device schematic diagram according to first embodiment of the invention；
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of first embodiment from left to right；
Fig. 3 illustrates the image-taking device schematic diagram according to second embodiment of the invention；
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of second embodiment from left to right；
Fig. 5 illustrates the image-taking device schematic diagram according to third embodiment of the invention；
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment from left to right；
Fig. 7 illustrates the image-taking device schematic diagram according to fourth embodiment of the invention；
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment from left to right；
Fig. 9 illustrates the image-taking device schematic diagram according to fifth embodiment of the invention；
Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right；
Figure 11 illustrates the image-taking device schematic diagram according to sixth embodiment of the invention；
Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right；
Figure 13 illustrates the image-taking device schematic diagram according to seventh embodiment of the invention；
Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right；
Figure 15 illustrates the image-taking device schematic diagram according to eighth embodiment of the invention；
Figure 16 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right；
Figure 17 illustrates the image-taking device schematic diagram according to ninth embodiment of the invention；
Figure 18 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 9th embodiment from left to right；
Figure 19 illustrates the image-taking device schematic diagram according to tenth embodiment of the invention；
Figure 20 is sequentially spherical aberration, astigmatism and the distortion curve figure of the tenth embodiment from left to right；
Figure 21 illustrates the image-taking device schematic diagram according to eleventh embodiment of the invention；
Figure 22 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 11st embodiment from left to right；
Figure 23 illustrates the image-taking device schematic diagram according to twelveth embodiment of the invention；
Figure 24 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 12nd embodiment from left to right；
Figure 25 illustrates the schematic diagram according to parameter Y11, Y62, Yc62 in first embodiment of the invention；
Figure 26 illustrates a kind of schematic diagram of electronic installation according to the present invention；
Figure 27 illustrates the schematic diagram of another electronic installation according to the present invention；
Figure 28 illustrates the schematic diagram of another electronic installation according to the present invention；
Figure 29 illustrates the schematic diagram of another electronic installation according to the present invention.
Wherein, reference
Capture Zhuan Zhi ︰ 10
Guang Quan ︰ 100,200,300,400,500,600,700,800,900,1000,1100, 1200
First Tou Jing ︰ 110,210,310,410,510,610,710,810,910,1010,1110, 1210
Thing Ce Biao Mian ︰ 111,211,311,411,511,611,711,811,911,1011,1111, 1211
As side surface ︰ 112,212,312,412,512,612,712,812,912,1012,1112, 1212
2nd saturating mirror ︰ 120,220,320,420,520,620,720,820,920,1020,1120, 1220
Thing Ce Biao Mian ︰ 121,221,321,421,521,621,721,821,921,1021,1121, 1221
As side surface ︰ 122,222,322,422,522,622,722,822,922,1022,1122, 1222
San Tou Jing ︰ 130,230,330,430,530,630,730,830,930,1030,1130, 1230
Thing Ce Biao Mian ︰ 131,231,331,431,531,631,731,831,931,1031,1131, 1231
As side surface ︰ 132,232,332,432,532,632,732,832,932,1032,1132, 1232
4th Tou Jing ︰ 140,240,340,440,540,640,740,840,940,1040,1140, 1240
Thing Ce Biao Mian ︰ 141,241,341,441,541,641,741,841,941,1041,1141, 1241
As side surface ︰ 142,242,342,442,542,642,742,842,942,1042,1142, 1242
5th Tou Jing ︰ 150,250,350,450,550,650,750,850,950,1050,1150, 1250
Thing Ce Biao Mian ︰ 151,251,351,451,551,651,751,851,951,1051,1151, 1251
As side surface ︰ 152,252,352,452,552,652,752,852,952,1052,1152, 1252
6th Tou Jing ︰ 160,260,360,460,560,660,760,860,960,1060,1160, 1260
Thing Ce Biao Mian ︰ 161,261,361,461,561,661,761,861,961,1061,1161, 1261
As side surface ︰ 162,262,362,462,562,662,762,862,962,1062,1162, 1262
Infrared ray filter out optical element ︰ 170,270,370,470,570,670,770,870,970, 1070、1170、1270
Cheng Xiang Mian ︰ 180,280,380,480,580,680,780,880,980,1080,1180, 1280
Electronics photo-sensitive cell ︰ 190,290,390,490,590,690,790,890,990,1090, 1190、1290
In ATmax ︰ optical lenses for image formation groups between wantonly two adjacent lens in spacing distance on optical axis most Big value
The lens of CT1 ︰ first are in the thickness on optical axis
Each lens are in the maximum of thickness on optical axis in CTmax ︰ optical lenses for image formation groups
Each lens are in the minimum value of thickness on optical axis in CTmin ︰ optical lenses for image formation groups
The focal length of f ︰ optical lenses for image formation groups
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 focal length of the lens of f4 ︰ the 4th
The focal length of the lens of f5 ︰ the 5th
The focal length of the lens of f6 ︰ the 6th
The half at maximum visual angle in HFOV ︰ optical lenses for image formation groups
The maximum image height of ImgH ︰ optical lenses for image formation groups
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 the lens thing side surfaces of R7 ︰ the 4th
The radius of curvature on the lens image side surfaces of R8 ︰ the 4th
The radius of curvature on the lens image side surfaces of R10 ︰ the 5th
The radius of curvature of the lens thing side surfaces of R11 ︰ the 6th
The radius of curvature on the lens image side surfaces of R12 ︰ the 6th
SD ︰ apertures are to the 6th lens image side surface in the distance on optical axis
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 lens of T45 ︰ the 4th and the 5th lens are in the spacing distance on optical axis
TD ︰ the first lens thing side surfaces to the 6th lens image side surface is in the distance on optical axis
TL ︰ the first lens thing side surfaces are to imaging surface in the distance on optical axis
The maximum effective radius of Y11 ︰ the first lens things side surface
The maximum effective radius on the lens image side surfaces of Y62 ︰ the 6th
Vertical range between the critical point on the lens image side surfaces of Yc62 ︰ the 6th and optical axis
Embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Optical lenses for image formation group by thing side to image side sequentially comprising the first lens, the second lens, the 3rd lens, 4th lens, the 5th lens and the 6th lens.Wherein, the lens of optical lenses for image formation group are six.
Each two in first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens In can be respectively provided with an airspace on optical axis between adjacent lens, that is, it is the first lens, the second lens, the 3rd saturating Mirror, the 4th lens, the 5th lens and the 6th lens can be six single non-bonding (disengaged) lens.By It is complicated in the more non-bonding lens of the technique of bonding lens, particularly it need to possess high accuracy in the bond area of two lens Curved surface, to reach the high adaptation during bonding of two lens, and during bonding, more likely because inclined Position and cause to move axle defect, the overall optical imagery quality of influence.Therefore, the first lens to the 6th lens can be Six single non-bonding lens, and then it is prevented effectively from the problem that binding lens.
First lens thing side surface can have an at least point of inflexion with least one of surface in image side surface.By This, the aberration contributed at modified off-axis.
Second lens have positive refracting power, and its thing side surface can be convex surface at dipped beam axle.Thereby, it is possible to provide In the light collection ability that thing side is enough, help to shorten the total length of lens group and maintain it to minimize.
3rd lens have positive refracting power, and its thing side surface can have extremely with least one of surface in image side surface Few point of inflexion.Thereby, the 3rd lens arrange in pairs or groups the second lens can active balance thing side light convergence energy Power, excessive aberration is produced to avoid single lens refracting power excessive.
4th lens have positive refracting power, its thing side surface at dipped beam axle can be concave surface, its image side surface in It can be convex surface at dipped beam axle.Thereby, the symmetry with the 3rd lens can be lifted, is conducive to slowing down the production of aberration It is raw.
5th lens have positive refracting power, its thing side surface at dipped beam axle can be concave surface, its image side surface in It can be convex surface at dipped beam axle.Thereby, contribute to increase the symmetry of imagery optical lens group, and then reduce Susceptibility is to lift image quality.
6th lens can have negative refracting power, and contribute to amendment Petzval sum (Petzval sum), so that Imaging surface is more flat.In addition, the 6th lens image side surface is concave surface at dipped beam axle, principal point can be made toward thing side Direction is moved, and helps to shorten back focal length and further shorten total length.In addition, the 6th lens image side surface With an at least point of inflexion, and the aberration contributed at further modified off-axis.
Optical lenses for image formation group further includes an aperture, aperture be configured in the first lens and the 3rd lens it Between.Aperture to the 6th lens image side surface in the distance on optical axis be SD, the first lens thing side surface to the Six lens image side surfaces are TD in the distance on optical axis, and it meets following condition：0.65<SD/TD.By This, can balance aperture position, effectively control light beam trend, to possess enough field of view angle and into image height Degree.
The focal length of optical lenses for image formation group is f, and the first lens thing side surface a to imaging surface is on optical axis Distance is TL, and it meets following condition：0.70<TL/f<2.85.Thereby, enough visual angles can enter The large-scale image capture of row, helps to control the total length of lens group, with up to the purpose of miniaturization.Preferably Ground, it can further meet following condition：0.70<TL/f<2.45.More preferably, it can further expire Foot row condition：0.70<TL/f≦1.66.
The half at maximum visual angle is HFOV in optical lenses for image formation group, and it can meet following condition：0.70 <tan(HFOV)<0.98.Thereby, can have enough image pickup scopes, while can effectively suppress distortion with Avoid deformation of image.
The radius of curvature of 5th lens image side surface is R10, and the radius of curvature of the 6th lens thing side surface is R11, it can meet following condition：-0.95<R10/R11<0.85.Thereby, by the face type of control lens Change, to lift light path regulation and control efficiency, makes lens reach preferably effect of optimization.
The focal length of first lens is f1, and the focal length of the 4th lens is f4, and it can meet following condition：-0.80< f4/f1.Thereby, the configuration of optical lenses for image formation group refracting power can be effectively controlled, to avoid producing in thing side Raw excessive aberration.
The focal length of first lens is f1, and the focal length of the 6th lens is f6, and it can meet following condition：-5.0< f6/f1<0.50.Thereby, the refracting power of nearly thing side and nearly image side end can be balanced, to strengthen the control at image side end Ability processed, and then lift image quality.
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, it can meet following condition：0<(R7+R8)/(R7-R8)<5.0.Thereby, the 4th lens can be avoided Change in shape is excessive and causes shaping to be difficult, and then influences fine ratio of product.
The focal length of second lens is f2, and the focal length of the 3rd lens is f3, and it can meet following condition：0<f2/f3 <1.50.Thereby, contribute to strengthen the control ability to the second lens, it is to avoid optical lenses for image formation group Volume is excessive.
First lens are CT1 in the thickness on optical axis, and the first lens and the second lens are in the interval on optical axis Distance is T12, and the second lens and the 3rd lens are T23 in the spacing distance on optical axis, and it can meet following Condition：0.20<(T12+T23)/CT1<1.50.Thereby, contribute to lift optical lenses for image formation group Space availability ratio, it is to avoid ensure to have enough assembling spaces while space waste in favor of the assembling of lens, And then yield can be maintained.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is Each lens are CTmin in the minimum value of thickness on optical axis in ATmax, optical lenses for image formation group, and it can Meet following condition：ATmax/CTmin<2.0.Thereby, be conducive to the size of appropriately configured each lens big Thickness proportions that are small and controlling lens, in favor of assembling manufacturing and reach preferably space utilization rate.
The maximum effective radius of first lens thing side surface is Y11, and the maximum on the 6th lens image side surface is effectively Radius is Y62, and it can meet following condition：Y11/Y62<0.90.Thereby, contribute to control light path, And ensure to receive light with enough image heights and larger photosensitive area, and then image brilliance can be lifted. Figure 25 is refer to, parameter Y11, Y62 in the optical lenses for image formation group of first embodiment of the invention is illustrated Schematic diagram.
The focal length of 5th lens is f5, and the focal length of the 6th lens is f6, and it can meet following condition：-0.85< f6/f5<2.0.Thereby, can counterbalance side and image side end refracting power, to strengthen the control energy at image side end Power, and then control total length.
The abbe number that can have at least two lens in optical lenses for image formation group is less than 30.That is, the Can have at least two in one lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens Piece abbe number is less than 30 lens.Thereby, can active balance different-waveband light focal position, with The situation of image overlap is avoided to produce.
Second lens and the 3rd lens are T23 in the spacing distance on optical axis, the 3rd lens and the 4th lens in Spacing distance on optical axis is T34, and the 4th lens and the 5th lens are T45 in the spacing distance on optical axis, It can meet following condition：0.45<T34/(T23+T45).Thereby, lens group is may help to be formed symmetrically Structure and configuration, and then lift image quality.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is ATmax, the maximum image height of optical lenses for image formation group is ImgH (i.e. effective feelings of electronics photo-sensitive cell Survey the half of region diagonal overall length), it can meet following condition：ATmax/ImgH≦0.23.Thereby, It can ensure that space makes full use of, and be provided simultaneously with enough areas and receive light.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is Each lens are CTmax in the maximum of thickness on optical axis in ATmax, optical lenses for image formation group, and it can Meet following condition：1.1<CTmax/ATmax<5.0.Thereby, can active balance optical lenses for image formation The configuration of lens in group, desensitising is taken into account while image quality is lifted.
First lens thing side surface to the 6th lens image side surface is TD, the 6th lens in the distance on optical axis Vertical range between the critical point on image side surface and optical axis is Yc62, and it can meet following condition：1.0< TD/Yc62<4.0.Thereby, can modified off-axis visual field aberration, and effectively control curvature of the image.It refer to Figure 25, illustrates the schematic diagram of the parameter Yc62 in the optical lenses for image formation group of first embodiment of the invention. The critical point (Critical Point) of 6th lens image side surface is the tangent plane and the 6th lens picture perpendicular to optical axis Point of contact on the tangent tangent line in side surface；It is noted that critical point is not on optical axis.
The radius of curvature of 6th lens thing side surface is R11, and the radius of curvature on the 6th lens image side surface is R12, it can meet following condition：0.50<(R11+R12)/(R11-R12)<2.80.Thereby, can be effective Control the face type of the 6th lens, it is to avoid lens overbending and cause the generation of veiling glare.
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, it can meet following condition：(R1-R2)/(R1+R2)<0.50.Thereby, can effectively it control first saturating The shape of mirror, is conducive to correcting astigmatism.
The focal length of optical lenses for image formation group is f, and the first lens and the second lens are in the spacing distance on optical axis For T12, it can meet following condition：0<T12/f<0.10.Thereby, can effectively shorten the first lens with The spacing of second lens, and then be conducive to the miniaturization of optical lenses for image formation group.
The invention discloses optical lenses for image formation group in, the configuration of aperture can for preposition aperture or in put light Circle.Wherein preposition aperture implies that aperture is arranged between object and the first lens, in put aperture and then represent aperture It is arranged between the first lens and imaging surface.If aperture be preposition aperture, can make outgoing pupil (Exit Pupil) with into Image planes produce longer distance, make it have telecentricity (Telecentric) effect, and can increase the photosensitive member of electronics The CCD or CMOS of part receive the efficiency of image；If in put aperture, contribute to the visual field of expansion system Angle, makes lens group have the advantage of wide-angle lens.
The invention discloses optical lenses for image formation group in, the material of lens can be plastic cement or glass.Work as lens Material be glass, can increase refracting power configuration the free degree., then can be with separately when lens material is plastic cement Effectively reduce production cost.In addition, can be aspherical to hold in being set on lens surface aspherical (ASP) The shape beyond sphere is easily fabricated to, more controlled variable is obtained, to cut down aberration, and then reduces institute The number of lens need to be used, therefore can effectively reduce optics total length.
The invention discloses optical lenses for image formation group in, if lens surface be convex surface and do not define the convex surface position When putting, then it represents that the convex surface can be located at lens surface dipped beam axle；If lens surface is concave surface and does not define this During the position of concave surface, then it represents that the concave surface can be located at lens surface dipped beam axle.If the refracting power or focal length of lens When not defining its regional location, then it represents that it is in the wrong at dipped beam axle that the refracting power or focal length of the lens can be lens Roll over power or focal length.
The invention discloses optical lenses for image formation group in, the imaging surface of optical lenses for image formation group is according to its correspondence Electronics photo-sensitive cell difference, for a plane or can have the curved surface of any curvature, particularly relate to concave surface towards past Thing side to curved surface.
In optical lenses for image formation group of the present invention, settable have an at least diaphragm, its can be located at the first lens it Before, between each lens or after last lens, the species of the diaphragm light diaphragm (Glare Stop) or is regarded as shone Field diaphragm (Field Stop) etc., can be used to reduce veiling glare, help to lift image quality.
The present invention more provides a kind of image-taking device, and it is photosensitive comprising foregoing optical lenses for image formation group and electronics Element, wherein electronics photo-sensitive cell are arranged on the imaging surface of optical lenses for image formation group.It is preferred that this takes As device can further include lens barrel, support device (Holder Member) or its combination.
Figure 26,27,28 and 29 are refer to, image-taking device 10 many-sided can be applied to intelligent mobile phone (such as Shown in Figure 26), tablet PC (as shown in figure 27), Wearable device (as shown in figure 28) with driving remember Record the electronic installations such as device (as shown in figure 29).It is preferred that electronic installation can further include control unit, Display unit, storage element, random access memory (RAM) or its combination.
The more visual demand of optical lenses for image formation group of the present invention is applied in the optical system of mobile focusing, and Have the characteristic of excellent lens error correction and good image quality concurrently.The present invention many-sided can be also applied to three-dimensional (3D) Image capture, digital camera, mobile device, digital flat, intelligent electric are regarded, network monitoring device, OK In the electronic installations such as car logger, reversing developing apparatus, somatic sensation television game machine and Wearable device.Before take off electronics Device is only the practice example for exemplarily illustrating the present invention, not limits the image-taking device of the present invention Operation strategies.
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 the image-taking device signal according to first embodiment of the invention Figure, Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of first embodiment from left to right.By Fig. 1 Understand, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 190.Imaging With optics lens group by thing side to image side sequentially comprising the first lens 110, aperture 100, the second lens 120, 3rd lens 130, the 4th lens 140, the 5th lens 150, the 6th lens 160, infrared ray filter out optical filtering Element (IR-cut Filter) 170 and imaging surface 180.Wherein, electronics photo-sensitive cell 190 is arranged at imaging surface On 180.The lens (110-160) of optical lenses for image formation group are six.
First lens 110 have negative refracting power, and are plastic cement material, and its thing side surface 111 is at dipped beam axle For concave surface, its image side surface 112 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 111 all has an at least point of inflexion with image side surface 112.
Second lens 120 have positive refracting power, and are plastic cement material, and its thing side surface 121 is at dipped beam axle For convex surface, its image side surface 122 is concave 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 at dipped beam axle For convex surface, its image side surface 132 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 131 all has an at least point of inflexion with image side surface 132.
4th lens 140 have positive refracting power, and are plastic cement material, and its thing side surface 141 is at dipped beam axle For concave surface, its image side surface 142 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 150 have positive refracting power, and are plastic cement material, and its thing side surface 151 is at dipped beam axle For concave surface, its image side surface 152 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 160 have negative refracting power, and are plastic cement material, and its thing side surface 161 is at dipped beam axle For convex surface, its image side surface 162 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 162 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table one, the abbe number of the 3rd lens 130 and the 5th lens 150 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 170 is glass, and it is arranged at the 6th lens 160 and imaging surface Between 180, the focal length of optical lenses for image formation group is had no effect on.
The aspherical fitting equation of above-mentioned each lens is expressed as follows：
In the optical lenses for image formation group of first embodiment, the focal length of optical lenses for image formation group is f, imaging With one that the f-number (F-number) of optics lens group is maximum visual angle in Fno, optical lenses for image formation group Half is HFOV, and its numerical value is as follows：F=1.96 millimeters (mm), Fno=1.95, HFOV=39.3 degree (deg.).
First lens 110 are CT1 in the thickness on optical axis, the first lens 110 and the second lens 120 in Spacing distance on optical axis is T12, and the second lens 120 and the 3rd lens 130 are in the spacing distance on optical axis For T23, it meets following condition：(T12+T23)/CT1=0.62.
Second lens 120 and the 3rd lens 130 are T23, the 3rd lens 130 in the spacing distance on optical axis In the spacing distance on optical axis be T34 with the 4th lens 140, the 4th lens 140 and the 5th lens 150 in Spacing distance on optical axis is T45, and it meets following condition：T34/ (T23+T45)=1.14.
The focal length of optical lenses for image formation group is f, and the first lens 110 and the second lens 120 are on optical axis Spacing distance T12, it meets following condition：T12/f=0.02.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is Each lens are CTmax in the maximum of thickness on optical axis in ATmax, optical lenses for image formation group, and it is expired Foot row condition：CTmax/ATmax=2.58.In the present embodiment, the 4th lens 140 are on optical axis Thickness be more than other lenses in the thickness on optical axis, thus CTmax be the 4th lens 140 in Thickness on optical axis.In addition, in the present embodiment, the 3rd lens 130 and the 4th lens 140 are in optical axis On spacing distance be more than between other adjacent two lens in the spacing distance on optical axis, thus ATmax is 3rd lens 130 and the 4th lens 140 are in the spacing distance on optical axis.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is Each lens are CTmin in the minimum value of thickness on optical axis in ATmax, optical lenses for image formation group, and it is expired Foot row condition：ATmax/CTmin=0.96.In the present embodiment, the first lens 110 are on optical axis Thickness be less than other lenses in the thickness on optical axis, thus CTmin is the first lens 110 in light Thickness on axle.
Maximum in optical lenses for image formation group between each two adjacent lens in spacing distance on optical axis is ATmax, the maximum image height of optical lenses for image formation group is ImgH, and it meets following condition： ATmax/ImgH=0.10.
The radius of curvature of first lens thing side surface 111 is R1, the curvature on the first lens image side surface 112 Radius is R2, and it meets following condition：(R1-R2)/(R1+R2)=- 0.18.
The radius of curvature of 4th lens thing side surface 141 is R7, the curvature on the 4th lens image side surface 142 Radius is R8, and it meets following condition：(R7+R8)/(R7-R8)=1.13.
The radius of curvature R 11 of 6th lens thing side surface 161, the curvature half on the 6th lens image side surface 162 Footpath R12, it meets following condition：(R11+R12)/(R11-R12)=2.31.
The radius of curvature of 5th lens image side surface 152 is R10, the curvature of the 6th lens thing side surface 161 Radius is R11, and it meets following condition：R10/R11=-0.46.
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： F2/f3=0.19.
The focal length of first lens 110 is f1, and the focal length of the 4th lens 140 is f4, and it meets following condition： F4/f1=-0.08.
The focal length of 5th lens 150 is f5, and the focal length of the 6th lens 160 is f6, and it meets following condition： F6/f5=-0.11.
The focal length of first lens 110 is f1, and the focal length of the 6th lens 160 is f6, and it meets following condition： F6/f1=0.11.
The maximum effective radius of first lens thing side surface 111 is Y11, the 6th lens image side surface 162 Maximum effective radius be Y62, it meets following condition：Y11/Y62=0.56.
The lens image side surface 162 of aperture 100 to the 6th is SD, the first lens thing side in the distance on optical axis The lens image side surface 162 of surface 111 to the 6th is TD in the distance on optical axis, and it meets following condition： SD/TD=0.85.
The lens image side surface 162 of first lens thing side surface 111 to the 6th is TD in the distance on optical axis, Vertical range between the critical point of 6th lens image side surface 162 and optical axis is Yc62, and it meets following bar Part：TD/Yc62=2.53.
The focal length of optical lenses for image formation group is f, and the first lens thing side surface 111 is to imaging surface 180 in light Distance on axle is TL, and it meets following condition：TL/f=1.53.
The half at maximum visual angle is HFOV in optical lenses for image formation group, and it meets following condition： Tan (HFOV)=0.82.
Coordinate with reference to following table one and table two.
Table one is the list of the detailed structured data, wherein radius of curvature, thickness and focal length of Fig. 1 first embodiments Position is millimeter (mm), and surface 0 to 16 sequentially represented by the surface of thing side to image side.Table two is first real The aspherical surface data in example is applied, wherein, k is the conical surface coefficient in aspheric curve equation, A4 to A16 Then represent each rank asphericity coefficient of surface the 4 to 16th.In addition, following embodiment form is each reality of correspondence Apply table one and table two of the definition of data in the schematic diagram and aberration curve figure of example, form all with first embodiment Definition it is identical, not in this to go forth.
<Second embodiment>
Fig. 3 and Fig. 4 is refer to, wherein Fig. 3 illustrates the image-taking device signal according to second embodiment of the invention Figure, Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of second embodiment from left to right.By Fig. 3 Understand, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 290.Imaging With optics lens group by thing side to image side sequentially comprising the first lens 210, aperture 200, the second lens 220, 3rd lens 230, the 4th lens 240, the 5th lens 250, the 6th lens 260, infrared ray filter out optical filtering Element (IR-cut Filter) 270 and imaging surface 280.Wherein, electronics photo-sensitive cell 190 is arranged at imaging surface On 180.The lens (210-260) of optical lenses for image formation group are six.
First lens 210 have positive refracting power, and are plastic cement material, and its thing side surface 211 is at dipped beam axle For convex surface, its image side surface 212 is concave 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 at dipped beam axle For convex surface, its image side surface 222 is concave 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 at dipped beam axle For convex surface, its image side surface 232 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 231 all has an at least point of inflexion with image side surface 232.
4th lens 240 have positive refracting power, and are plastic cement material, and its thing side surface 241 is at dipped beam axle For convex surface, its image side surface 242 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 250 have positive refracting power, and are plastic cement material, and its thing side surface 251 is at dipped beam axle For concave surface, its image side surface 252 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 260 have negative refracting power, and are plastic cement material, and its thing side surface 261 is at dipped beam axle For convex surface, its image side surface 262 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 262 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table three, the abbe number of the 3rd lens 230 and the 5th lens 250 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 270 is glass, and it is arranged at the 6th lens 260 and imaging surface Between 280, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table 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 the image-taking device signal according to third embodiment of the invention Figure, Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment from left to right.By Fig. 5 Understand, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 390.Imaging With optics lens group by thing side to image side sequentially comprising aperture 300, the first lens 310, the second lens 320, 3rd lens 330, the 4th lens 340, the 5th lens 350, the 6th lens 360, infrared ray filter out optical filtering Element (IR-cut Filter) 370 and imaging surface 380.Wherein, electronics photo-sensitive cell 390 is arranged at imaging surface On 380.The lens (310-360) of optical lenses for image formation group are six.
First lens 310 have negative refracting power, and are plastic cement material, and its thing side surface 311 is at dipped beam axle For convex surface, its image side surface 312 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 311 all has an at least point of inflexion with image side surface 312.
Second lens 320 have positive refracting power, and are plastic cement material, and its thing side surface 321 is at dipped beam axle For convex surface, its image side surface 322 is concave 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 at dipped beam axle For convex surface, its image side surface 332 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 331 all has an at least point of inflexion with image side surface 332.
4th lens 340 have positive refracting power, and are plastic cement material, and its thing side surface 341 is at dipped beam axle For concave surface, its image side surface 342 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 350 have positive refracting power, and are plastic cement material, and its thing side surface 351 is at dipped beam axle For concave surface, its image side surface 352 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 360 have negative refracting power, and are plastic cement material, and its thing side surface 361 is at dipped beam axle For convex surface, its image side surface 362 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 362 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has four lens is smaller than 30.Such as Shown in following table five, the first lens 310, the 3rd lens 330, the 5th lens 350 and the 6th lens 360 Abbe number be smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 370 is glass, and it is arranged at the 6th lens 360 and imaging surface Between 380, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table 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 the image-taking device signal according to fourth embodiment of the invention Figure, Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment from left to right.By Fig. 7 Understand, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 490.Imaging With optics lens group by thing side to image side sequentially comprising aperture 400, the first lens 410, the second lens 420, 3rd lens 430, the 4th lens 440, the 5th lens 450, the 6th lens 460, infrared ray filter out optical filtering Element (IR-cut Filter) 470 and imaging surface 480.Wherein, electronics photo-sensitive cell 490 is arranged at imaging surface On 480.The lens (410-460) of optical lenses for image formation group are six.
First lens 410 have negative refracting power, and are plastic cement material, and its thing side surface 411 is at dipped beam axle For convex surface, its image side surface 412 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 411 all has an at least point of inflexion with image side surface 412.
Second lens 420 have positive refracting power, and are plastic cement material, and its thing side surface 421 is at dipped beam axle For convex surface, its image side surface 422 is concave 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 at dipped beam axle For convex surface, its image side surface 432 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 431 all has an at least point of inflexion with image side surface 432.
4th lens 440 have positive refracting power, and are plastic cement material, and its thing side surface 441 is at dipped beam axle For concave surface, its image side surface 442 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 450 have positive refracting power, and are plastic cement material, and its thing side surface 451 is at dipped beam axle For concave surface, its image side surface 452 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 460 have negative refracting power, and are plastic cement material, and its thing side surface 461 is at dipped beam axle For concave surface, its image side surface 462 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 462 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has four lens is smaller than 30.Such as Shown in following table seven, the first lens 410, the 3rd lens 430, the 5th lens 450 and the 6th lens 460 Abbe number be smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 470 is glass, and it is arranged at the 6th lens 460 and imaging surface Between 480, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table 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 is illustrated to be shown according to the image-taking device of fifth embodiment of the invention It is intended to, Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right.By scheming 9 understand, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 590.Into As with optics lens group by thing side to image side sequentially comprising the first lens 510, the second lens 520, aperture 500, 3rd lens 530, the 4th lens 540, the 5th lens 550, the 6th lens 560, infrared ray filter out optical filtering Element (IR-cut Filter) 570 and imaging surface 580.Wherein, electronics photo-sensitive cell 590 is arranged at imaging surface On 580.The lens (510-560) of optical lenses for image formation group are six.
First lens 510 have positive refracting power, and are plastic cement material, and its thing side surface 511 is at dipped beam axle For concave surface, its image side surface 512 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 511 all has an at least point of inflexion with image side surface 512.
Second lens 520 have positive refracting power, and are plastic cement material, and its thing side surface 521 is at dipped beam axle For convex surface, its image side surface 522 is concave 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 at dipped beam axle For convex surface, its image side surface 532 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 531 all has an at least point of inflexion with image side surface 532.
4th lens 540 have positive refracting power, and are plastic cement material, and its thing side surface 541 is at dipped beam axle For convex surface, its image side surface 542 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 550 have positive refracting power, and are plastic cement material, and its thing side surface 551 is at dipped beam axle For concave surface, its image side surface 552 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 560 have negative refracting power, and are plastic cement material, and its thing side surface 561 is at dipped beam axle For convex surface, its image side surface 562 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 562 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table nine, the abbe number of the 3rd lens 530 and the 5th lens 550 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 570 is glass, and it is arranged at the 6th lens 560 and imaging surface Between 580, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table 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 the image-taking device according to sixth embodiment of the invention Schematic diagram, Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right.By Figure 11 understands that image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 690. Optical lenses for image formation group sequentially includes the first lens 610, the second lens 620, aperture by thing side to image side 600th, the 3rd lens 630, the 4th lens 640, the 5th lens 650, the 6th lens 660, infrared ray filter Except filter element (IR-cut Filter) 670 and imaging surface 680.Wherein, electronics photo-sensitive cell 690 is arranged at On imaging surface 680.The lens (610-660) of optical lenses for image formation group are six.
First lens 610 have negative refracting power, and are plastic cement material, and its thing side surface 611 is at dipped beam axle For concave surface, its image side surface 612 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 611 all has an at least point of inflexion with image side surface 612.
Second lens 620 have positive refracting power, and are plastic cement material, and its thing side surface 621 is at dipped beam axle For convex surface, its image side surface 622 is concave 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 at dipped beam axle For convex surface, its image side surface 632 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 631 all has an at least point of inflexion with image side surface 632.
4th lens 640 have positive refracting power, and are plastic cement material, and its thing side surface 641 is at dipped beam axle For convex surface, its image side surface 642 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 650 have positive refracting power, and are plastic cement material, and its thing side surface 651 is at dipped beam axle For concave surface, its image side surface 652 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 660 have negative refracting power, and are plastic cement material, and its thing side surface 661 is at dipped beam axle For convex surface, its image side surface 662 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 662 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table 11, the abbe number of the 3rd lens 630 and the 5th lens 650 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 670 is glass, and it is arranged at the 6th lens 660 and imaging surface Between 680, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table 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 the image-taking device according to seventh embodiment of the invention Schematic diagram, Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right.By Figure 13 understands that image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 790. Optical lenses for image formation group sequentially includes the first lens 710, the second lens 720, aperture by thing side to image side 700th, the 3rd lens 730, the 4th lens 740, the 5th lens 750, the 6th lens 760, infrared ray filter Except filter element (IR-cut Filter) 770 and imaging surface 780.Wherein, electronics photo-sensitive cell 790 is arranged at On imaging surface 780.The lens (710-760) of optical lenses for image formation group are six.
First lens 710 have negative refracting power, and are plastic cement material, and its thing side surface 711 is at dipped beam axle For concave surface, its image side surface 712 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 711 all has an at least point of inflexion with image side surface 712.
Second lens 720 have positive refracting power, and are plastic cement material, and its thing side surface 721 is at dipped beam axle For convex surface, 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 at dipped beam axle For convex surface, its image side surface 732 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 731 has an at least point of inflexion.
4th lens 740 have positive refracting power, and are plastic cement material, and its thing side surface 741 is at dipped beam axle For convex surface, its image side surface 742 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 750 have positive refracting power, and are plastic cement material, and its thing side surface 751 is at dipped beam axle For concave surface, its image side surface 752 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 760 have negative refracting power, and are plastic cement material, and its thing side surface 761 is at dipped beam axle For concave surface, its image side surface 762 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 762 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table 13, the abbe number of the first lens 710 and the 3rd lens 730 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 770 is glass, and it is arranged at the 6th lens 760 and imaging surface Between 780, the focal length of optical lenses for image formation group is had no effect on.
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, under Definition described in table is all identical with first embodiment, and not in this to go forth.
<8th embodiment>
Figure 15 and Figure 16 is refer to, wherein Figure 15 illustrates the image-taking device according to eighth embodiment of the invention Schematic diagram, Figure 16 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right.By Figure 15 understands that image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 890. Optical lenses for image formation group sequentially includes the first lens 810, aperture 800, the second lens by thing side to image side 820th, the 3rd lens 830, the 4th lens 840, the 5th lens 850, the 6th lens 860, infrared ray filter Except filter element (IR-cut Filter) 870 and imaging surface 880.Wherein, electronics photo-sensitive cell 890 is arranged at On imaging surface 880.The lens (810-860) of optical lenses for image formation group are six.
First lens 810 have positive refracting power, and are plastic cement material, and its thing side surface 811 is at dipped beam axle For concave surface, its image side surface 812 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 811 all has an at least point of inflexion with image side surface 812.
Second lens 820 have positive refracting power, and are plastic cement material, and its thing side surface 821 is at dipped beam axle For convex surface, its image side surface 822 is convex surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 830 have positive refracting power, and are plastic cement material, and its thing side surface 831 is at dipped beam axle For concave surface, its image side surface 832 is convex surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 832 has an at least point of inflexion.
4th lens 840 have positive refracting power, and are plastic cement material, and its thing side surface 841 is at dipped beam axle For concave surface, its image side surface 842 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 850 have positive refracting power, and are plastic cement material, and its thing side surface 851 is at dipped beam axle For concave surface, its image side surface 852 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 860 have negative refracting power, and are plastic cement material, and its thing side surface 861 is at dipped beam axle For convex surface, its image side surface 862 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 862 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has three lens is smaller than 30.Such as Shown in following table 15, the abbe number of the 3rd lens 830, the 5th lens 850 and the 6th lens 860 is all Less than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 870 is glass, and it is arranged at the 6th lens 860 and imaging surface Between 880, the focal length of optical lenses for image formation group is had no effect on.
It please coordinate with reference to following table 15 and table 16.
In 8th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, under Definition described in table is all identical with first embodiment, and not in this to go forth.
<9th embodiment>
Figure 17 and Figure 18 is refer to, wherein Figure 17 illustrates the image-taking device according to ninth embodiment of the invention Schematic diagram, Figure 18 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 9th embodiment from left to right.By Figure 17 understands that image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 990. Optical lenses for image formation group sequentially includes the first lens 910, aperture 900, the second lens by thing side to image side 920th, the 3rd lens 930, the 4th lens 940, the 5th lens 950, the 6th lens 960, infrared ray filter Except filter element (IR-cut Filter) 970 and imaging surface 980.Wherein, electronics photo-sensitive cell 990 is arranged at On imaging surface 980.The lens (910-960) of optical lenses for image formation group are six.
First lens 910 have positive refracting power, and are plastic cement material, and its thing side surface 911 is at dipped beam axle For convex surface, its image side surface 912 is convex surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 912 has an at least point of inflexion.
Second lens 920 have positive refracting power, and are plastic cement material, and its thing side surface 921 is at dipped beam axle For convex surface, its image side surface 922 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 930 have positive refracting power, and are plastic cement material, and its thing side surface 931 is at dipped beam axle For convex surface, its image side surface 932 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing side table Face 931 has an at least point of inflexion.
4th lens 940 have positive refracting power, and are plastic cement material, and its thing side surface 941 is at dipped beam axle For concave surface, its image side surface 942 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 950 have positive refracting power, and are plastic cement material, and its thing side surface 951 is at dipped beam axle For concave surface, its image side surface 952 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 960 have negative refracting power, and are plastic cement material, and its thing side surface 961 is at dipped beam axle For convex surface, its image side surface 962 is concave surface at dipped beam axle, and its two surface is all aspherical, its image side table Face 962 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has a piece of lens is smaller than 30.Such as Shown in following table 17, the abbe number of the 6th lens 960 is less than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 970 is glass, and it is arranged at the 6th lens 960 and imaging surface Between 980, the focal length of optical lenses for image formation group is had no effect on.
It please coordinate with reference to following table 17 and table 18.
In 9th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, under Definition described in table is all identical with first embodiment, and not in this to go forth.
<Tenth embodiment>
Figure 19 and Figure 20 is refer to, wherein Figure 19 illustrates the image-taking device according to tenth embodiment of the invention Schematic diagram, Figure 20 is sequentially spherical aberration, astigmatism and the distortion curve figure of the tenth embodiment from left to right.By Figure 19 understands that image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 1090. Optical lenses for image formation group is sequentially saturating comprising the first lens 1010, aperture 1000, second by thing side to image side Mirror 1020, the 3rd lens 1030, the 4th lens 1040, the 5th lens 1050, the 6th lens 1060, Infrared ray filters out filter element (IR-cut Filter) 1070 and imaging surface 1080.Wherein, electronics photo-sensitive cell 1090 are arranged on imaging surface 1080.The lens (1010-1060) of optical lenses for image formation group are six.
First lens 1010 have negative refracting power, and are plastic cement material, and its thing side surface 1011 is in dipped beam axle Locate as convex surface, its image side surface 1012 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 1020 have positive refracting power, and are plastic cement material, and its thing side surface 1021 is in dipped beam axle Locate as convex surface, its image side surface 1022 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 1030 have positive refracting power, and are plastic cement material, and its thing side surface 1031 is in dipped beam axle Locate as concave surface, its image side surface 1032 is convex surface at dipped beam axle, and its two surface is all aspherical, its picture Side surface 1032 has an at least point of inflexion.
4th lens 1040 have positive refracting power, and are plastic cement material, and its thing side surface 1041 is in dipped beam axle Locate as concave surface, its image side surface 1042 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 1050 have positive refracting power, and are plastic cement material, and its thing side surface 1051 is in dipped beam axle Locate as concave surface, its image side surface 1052 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 1060 have negative refracting power, and are plastic cement material, and its thing side surface 1061 is in dipped beam axle Locate as convex surface, its image side surface 1062 is concave surface at dipped beam axle, and its two surface is all aspherical, its picture Side surface 1062 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table 19, the abbe number of the first lens 1010 and the 6th lens 1060 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 1070 is glass, and it is arranged at the 6th lens 1060 and imaging Between face 1080, the focal length of optical lenses for image formation group is had no effect on.
It please coordinate with reference to following table 19 and table 20.
In tenth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, under Definition described in table is all identical with first embodiment, and not in this to go forth.
<11st embodiment>
Figure 21 and Figure 22 is refer to, wherein Figure 21 illustrates the capture dress according to eleventh embodiment of the invention Schematic diagram is put, Figure 22 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 11st embodiment from left to right. As shown in Figure 21, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 1190.Optical lenses for image formation group by thing side to image side sequentially comprising the first lens 1110, aperture 1100, Second lens 1120, the 3rd lens 1130, the 4th lens 1140, the 5th lens 1150, the 6th lens 1160th, infrared ray filters out filter element (IR-cut Filter) 1170 and imaging surface 1180.Wherein, sense electronicses Optical element 1190 is arranged on imaging surface 1180.The lens (1110-1160) of optical lenses for image formation group are six Piece.
First lens 1110 have positive refracting power, and are plastic cement material, and its thing side surface 1111 is in dipped beam axle Locate as convex surface, its image side surface 1112 is convex surface at dipped beam axle, and its two surface is all aspherical, its thing Side surface 1111 has an at least point of inflexion.
Second lens 1120 have positive refracting power, and are plastic cement material, and its thing side surface 1121 is in dipped beam axle Locate as convex surface, its image side surface 1122 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 1130 have positive refracting power, and are plastic cement material, and its thing side surface 1131 is in dipped beam axle Locate as convex surface, its image side surface 1132 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing Side surface 1131 all has an at least point of inflexion with image side surface 1132.
4th lens 1140 have positive refracting power, and are plastic cement material, and its thing side surface 1141 is in dipped beam axle Locate as convex surface, its image side surface 1142 is convex surface at dipped beam axle, and its two surface is all aspherical.
5th lens 1150 have positive refracting power, and are plastic cement material, and its thing side surface 1151 is in dipped beam axle Locate as concave surface, its image side surface 1152 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 1160 have negative refracting power, and are plastic cement material, and its thing side surface 1161 is in dipped beam axle Locate as convex surface, its image side surface 1162 is concave surface at dipped beam axle, and its two surface is all aspherical, its picture Side surface 1162 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has two lens is smaller than 30.Such as Shown in following table 21, the abbe number of the second lens 1120 and the 5th lens 1150 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 1170 is glass, and it is arranged at the 6th lens 1160 and imaging Between face 1180, the focal length of optical lenses for image formation group is had no effect on.
It please coordinate with reference to following table 21 and table 22.
In 11st embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, Definition described in following table is all identical with first embodiment, and not in this to go forth.
<12nd embodiment>
Figure 23 and Figure 24 is refer to, wherein Figure 23 illustrates the capture dress according to twelveth embodiment of the invention Schematic diagram is put, Figure 24 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 12nd embodiment from left to right. As shown in Figure 23, image-taking device includes optical lenses for image formation group (not another label) and electronics photo-sensitive cell 1290.Optical lenses for image formation group by thing side to image side sequentially comprising the first lens 1210, aperture 1200, Second lens 1220, the 3rd lens 1230, the 4th lens 1240, the 5th lens 1250, the 6th lens 1260th, infrared ray filters out filter element (IR-cut Filter) 1270 and imaging surface 1280.Wherein, sense electronicses Optical element 1290 is arranged on imaging surface 1280.The lens (1210-1260) of optical lenses for image formation group are six Piece.
First lens 1210 have negative refracting power, and are plastic cement material, and its thing side surface 1211 is in dipped beam axle Locate as convex surface, its image side surface 1212 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing Side surface 1211 has an at least point of inflexion.
Second lens 1220 have positive refracting power, and are plastic cement material, and its thing side surface 1221 is in dipped beam axle Locate as convex surface, its image side surface 1222 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 1230 have positive refracting power, and are plastic cement material, and its thing side surface 1231 is in dipped beam axle Locate as convex surface, its image side surface 1232 is concave surface at dipped beam axle, and its two surface is all aspherical, its thing Side surface 1231 all has an at least point of inflexion with image side surface 1232.
4th lens 1240 have positive refracting power, and are plastic cement material, and its thing side surface 1241 is in dipped beam axle Locate as convex surface, its image side surface 1242 is concave surface at dipped beam axle, and its two surface is all aspherical.
5th lens 1250 have positive refracting power, and are plastic cement material, and its thing side surface 1251 is in dipped beam axle Locate as convex surface, its image side surface 1252 is convex surface at dipped beam axle, and its two surface is all aspherical.
6th lens 1260 have negative refracting power, and are plastic cement material, and its thing side surface 1261 is in dipped beam axle Locate as concave surface, its image side surface 1262 is concave surface at dipped beam axle, and its two surface is all aspherical, its picture Side surface 1262 has an at least point of inflexion.
In the present embodiment, the abbe number that optical lenses for image formation group has four lens is smaller than 30.Such as Shown in following table 23, the first lens 1210, the 3rd lens 1230, the 5th lens 1250 and the 6th are saturating The abbe number of mirror 1260 is smaller than 30.
The material of Hong Wai Xian Filter Chu Filter optical elements 1270 is glass, and it is arranged at the 6th lens 1260 and imaging Between face 1280, the focal length of optical lenses for image formation group is had no effect on.
It please coordinate with reference to following table 23 and table 24.
In 12nd embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, Definition described in following table is all identical with first embodiment, and not in this to go forth.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention.It is any to be familiar with this Those skilled in the art, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Therefore originally The protection domain of invention is defined when the scope defined depending on appended claim.

Claims (29)

1. a kind of optical lenses for image formation group, it is characterised in that sequentially included by thing side to image side：
One first lens；
One second lens, with positive refracting power；
One the 3rd lens, with positive refracting power；
One the 4th lens, with positive refracting power；
One the 5th lens, with positive refracting power；
One the 6th lens, its image side surface is concave surface at dipped beam axle, and its image side surface has an at least contrary flexure Point；
Wherein, the lens of the optical lenses for image formation group are six, and the optical lenses for image formation group further includes one Aperture, aperture to the 6th lens image side surface is SD, the first lens thing side in the distance on optical axis Surface to the 6th lens image side surface is TD in the distance on optical axis, and it meets following condition：
0.65 ＜ SD/TD.
2. optical lenses for image formation group according to claim 1, it is characterised in that the 6th lens With negative refracting power.
3. optical lenses for image formation group according to claim 1, it is characterised in that second lens, The thing side surface of each lens and picture in 3rd lens, the 4th lens, the 5th lens and the 6th lens Side surface is all aspherical, and the 3rd lens thing side surface and at least one of surface in image side surface are with extremely Few point of inflexion.
4. optical lenses for image formation group according to claim 1, it is characterised in that the aperture is set Between first lens and the 3rd lens.
5. optical lenses for image formation group according to claim 1, it is characterised in that the imaging is used up The half for learning maximum visual angle in lens group is HFOV, and the radius of curvature on the 5th lens image side surface is R10, The radius of curvature of 6th lens thing side surface is R11, and it meets following condition：
0.70 ＜ tan (HFOV) ＜ 0.98；And
- 0.95 ＜ R10/R11 ＜ 0.85.
6. optical lenses for image formation group according to claim 1, it is characterised in that first lens Focal length be f1, the focal lengths of the 4th lens is f4, and it meets following condition：
- 0.80 ＜ f4/f1.
7. optical lenses for image formation group according to claim 1, it is characterised in that first lens Focal length be f1, the focal lengths of the 6th lens is f6, and it meets following condition：
- 5.0 ＜ f6/f1 ＜ 0.50.
8. optical lenses for image formation group according to claim 1, it is characterised in that the 4th lens The radius of curvature of thing side surface is R7, and the radius of curvature on the 4th lens image side surface is R8, under it meets Row condition：
0 ＜ (R7+R8)/(R7-R8) ＜ 5.0.
9. optical lenses for image formation group according to claim 1, it is characterised in that second lens Focal length be f2, the focal lengths of the 3rd lens is f3, and it meets following condition：
0 ＜ f2/f3 ＜ 1.50.
10. optical lenses for image formation group according to claim 1, it is characterised in that first lens It is CT1 in the thickness on optical axis, 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：
0.20 ＜ (T12+T23)/CT1 ＜ 1.50.
11. optical lenses for image formation group according to claim 1, it is characterised in that the imaging is used up It is ATmax to learn the maximum in lens group between each two adjacent lens in spacing distance on optical axis, and the imaging is used Each lens are CTmin in the minimum value of thickness on optical axis in optical lens group, and it meets following condition：
ATmax/CTmin ＜ 2.0.
12. optical lenses for image formation group according to claim 1, it is characterised in that first lens The maximum effective radius of thing side surface is Y11, and the maximum effective radius on the 6th lens image side surface is Y62, It meets following condition：
Y11/Y62 ＜ 0.90.
13. image optics microscope group according to claim 1, it is characterised in that the 5th lens thing side Surface is concave surface at dipped beam axle, and the 5th lens image side surface is convex surface at dipped beam axle.
14. a kind of image-taking device, it is characterised in that include：
Optical lenses for image formation group as claimed in claim 1；And
One electronics photo-sensitive cell, wherein the electronics photo-sensitive cell are arranged at one one-tenth of the optical lenses for image formation group In image planes.
15. a kind of electronic installation, it is characterised in that include：
Image-taking device as claimed in claim 14.
16. a kind of optical lenses for image formation group, it is characterised in that sequentially included by thing side to image side：
One first lens；
One second lens, with positive refracting power；
One the 3rd lens, with positive refracting power；
One the 4th lens, with positive refracting power；
One the 5th lens, with positive refracting power；And
One the 6th lens, its image side surface is concave surface at dipped beam axle, and its image side surface has an at least contrary flexure Point；
Wherein, the lens of the optical lenses for image formation group be six, first lens, second lens, should 3rd lens, the 4th lens, the 5th lens and the 6th lens are all single non-bonding lens；
Wherein, the focal length of the optical lenses for image formation group is f, the first lens thing side surface a to imaging surface It is TL in the distance on optical axis, it meets following condition：
0.70 ＜ TL/f ＜ 2.85.
17. optical lenses for image formation group according to claim 16, it is characterised in that this is second saturating Mirror thing side surface is convex surface at dipped beam axle, and the 4th lens thing side surface is concave surface at dipped beam axle, and should 4th lens image side surface is convex surface at dipped beam axle.
18. optical lenses for image formation group according to claim 16, it is characterised in that this is first saturating Mirror thing side surface has an at least point of inflexion with least one of surface in image side surface.
19. optical lenses for image formation group according to claim 16, it is characterised in that the imaging is used The focal length of optical lens group is f, and the first lens thing side surface to the imaging surface is in the distance on optical axis TL, it meets following condition：
0.70 ＜ TL/f ＜ 2.45.
20. optical lenses for image formation group according to claim 19, it is characterised in that the imaging is used The focal length of optical lens group is f, and the first lens thing side surface to the imaging surface is in the distance on optical axis TL, it meets following condition：
0.70 ＜ TL/f≤1.66.
21. optical lenses for image formation group according to claim 16, it is characterised in that the 5th is saturating The focal length of mirror is f5, and the focal length of the 6th lens is f6, and it meets following condition：
- 0.85 ＜ f6/f5 ＜ 2.0.
22. optical lenses for image formation group according to claim 16, it is characterised in that the imaging is used At least the abbe number of two lens is less than 30 in the lens of optical lens group.
23. optical lenses for image formation group according to claim 16, it is characterised in that this is second saturating Mirror is T23 in the spacing distance on optical axis with the 3rd lens, and the 3rd lens are with the 4th lens in optical axis On spacing distance be T34, the 4th lens and the 5th lens are T45 in the spacing distance on optical axis, It meets following condition：
0.45 ＜ T34/ (T23+T45).
24. optical lenses for image formation group according to claim 16, it is characterised in that the imaging is used Maximum in optical lens group between each two adjacent lens in spacing distance on optical axis is ATmax, the imaging It is ImgH with the maximum image height of optics lens group, it meets following condition：
ATmax/ImgH≤0.23。
25. optical lenses for image formation group according to claim 16, it is characterised in that the imaging is used Maximum in optical lens group between each two adjacent lens in spacing distance on optical axis is ATmax, the imaging In the maximum of thickness on optical axis it is CTmax with each lens in optics lens group, it meets following condition：
1.1 ＜ CTmax/ATmax ＜ 5.0.
26. optical lenses for image formation group according to claim 16, it is characterised in that this is first saturating Mirror thing side surface to the 6th lens image side surface is TD, the 6th lens image side table in the distance on optical axis Vertical range Yc62 between the critical point in face and optical axis, it meets following condition：
1.0 ＜ TD/Yc62 ＜ 4.0.
27. optical lenses for image formation group according to claim 16, it is characterised in that the 6th is saturating The radius of curvature of mirror thing side surface is R11, and the radius of curvature on the 6th lens image side surface is R12, and it is expired Foot row condition：
0.50 ＜ (R11+R12)/(R11-R12) ＜ 2.80.
28. optical lenses for image formation group according to claim 16, it is characterised in that this is first saturating The radius of curvature of mirror thing side surface is R1, and the radius of curvature on the first lens image side surface is R2, and it meets Following condition：
(R1-R2)/(R1+R2) ＜ 0.50.
29. optical lenses for image formation group according to claim 16, it is characterised in that the imaging is used The focal length of optical lens group is f, first lens and second lens in the spacing distance T12 on optical axis, It meets following condition：
0 ＜ T12/f ＜ 0.10.
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