CN105717617A - Image capture optical battery of lens, image capture apparatus and electronic apparatus - Google Patents

Abstract

The invention discloses an image capture optical battery of lens, an image capture apparatus and an electronic apparatus. The image capture optical battery of lens includes from the object side to the image side successively: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens is provided with positive refraction power, and the object side surface of the first lens is a convex surface at the position being close to an optical axis; the second lens is provided with negative refraction power; the third lens is provided with refraction power; the fourth lens is provided with refraction power, and the image side surface of the fourth lens is a concave surface at the position being close to the optical axis; the fifth lens is provided with negative refraction power, and the object side surface of the fifth lens is a concave surface at the position being close to the optical axis, and the image side surface of the fifth lens is a convex surface at the position being close to the optical axis, and both the two surfaces are aspheric surfaces; and the sixth lens is provided with negative refraction power, and the image side surface of the sixth lens is a concave surface at the position being close to the optical axis, and both the two surfaces are aspheric surfaces, and the image side surface of the sixth lens is provided with points of inflexion. In the image capture optical battery of lens, the number of the lenses with refraction power is 6; and the image capture optical battery of lens also includes a diaphragm which is arranged between a shot object and the third lens. The invention also discloses an image capture apparatus with the image capture optical battery of lens and an electronic apparatus with the image capture apparatus.

Description

Imaging optical lens group, image-taking device and electronic installation

Technical field

The present invention relates to a kind of imaging optical lens group, image-taking device and electronic installation, particularly to a kind of imaging optical lens group suitable in electronic installation and image-taking device.

Background technology

In recent years, flourish along with miniaturization photographic lens, the demand of minisize image acquisition module day by day improves, and generally the photo-sensitive cell of photographic lens is nothing more than being photosensitive coupling element (ChargeCoupledDevice, or Complimentary Metal-Oxide semiconductor element (ComplementaryMetal-OxideSemiconductorSensor CCD), CMOSSensor) two kinds, and progressing greatly along with semiconductor process technique, the Pixel Dimensions making photo-sensitive cell reduces, add electronic product now with the good and compact external form of function for development trend, therefore, the miniaturization photographic lens possessing good image quality becomes main flow in the market.

Tradition is equipped on the high pixel miniaturization photographic lens on electronic installation, many employings five chip lens arrangements are main, but owing to the high standards such as high-order intelligent mobile phone (SmartPhone), Wearable device (WearableDevice) and tablet PC (TabletPersonalComputer) move the prevailing of device, driving the requirement in pixel with image quality of the miniaturization photographic lens to promote, existing five chip lens group will be unable to meet the demand of higher order.

Although having development generally traditional six chip optical systems at present, but the back focal length in existing optical system being long, it is unfavorable for the miniaturization of optical system.Additionally, the refracting power configuration inequality of each eyeglass in optical system, it is easily caused optical system minute surface peripheral angle excessive and produce unnecessary veiling glare.Furthermore, the surface, image side of the 4th lens in existing six chip optical systems is convex surface so that the central vision of optical system and the focusing power of surrounding visual field differ greatly, and easily produce marginal aberration.

Summary of the invention

It is an object of the invention to provide a kind of imaging optical lens group, image-taking device and electronic installation, wherein the 5th lens and the 6th lens have negative refracting power simultaneously, contribute to the principal point (PrincipalPoint) making imaging optical lens group away from image side end, and then burnt after shortening, it is beneficial to the miniaturization of imaging optical lens group.Additionally, also can effectively disperse the refracting power of imaging optical lens group to join cloth, excessive and produce veiling glare with the peripheral angle of avoiding imaging optical lens group minute surface.It addition, the 4th surface, lens image side is concave surface in dipped beam axle place, contributes to relaxing the focus strength of central vision, make central vision more consistent with the focusing power of surrounding visual field.Furthermore, when meeting specified conditions, can help to slow down into image curvature, reduce the marginal aberrations such as astigmatism and coma simultaneously.

The present invention provides a kind of imaging optical lens group, thing side to image side sequentially comprise the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.First lens have positive refracting power, and its thing side surface is convex surface in dipped beam axle place.Second lens have negative refracting power.3rd lens have refracting power.4th lens have refracting power, and its surface, image side is concave surface in dipped beam axle place.5th lens have negative refracting power, and its thing side surface is concave surface in dipped beam axle place, and its surface, image side is convex surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface.6th lens have negative refracting power, and its surface, image side is concave surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface, and its surface, image side has at least one point of inflexion.The lens having refracting power in imaging optical lens group are six.Imaging optical lens group more comprises an aperture, is arranged between an object and the 3rd lens.When the radius of curvature on the 4th surface, lens image side is R8, the focal length of imaging optical lens group is f, the focal length of the 5th lens is f5, the focal length of the 6th lens is f6, aperture is SL to imaging surface distance on optical axis, first lens thing side surface is TL to imaging surface distance on optical axis, and it meets following condition:

0.3 < R8/f；

0.65 < SL/TL < 1.2；And

0<f5/f6。

The present invention separately provides a kind of imaging optical lens group, thing side to image side sequentially comprise the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.First lens have positive refracting power.Second lens have negative refracting power, and its surface, image side is concave surface in dipped beam axle place.3rd lens have refracting power.4th lens have refracting power, and its surface, image side is concave surface in dipped beam axle place.5th lens have negative refracting power, and its thing side surface and surface, image side are all aspheric surface.6th lens have negative refracting power, and its surface, image side is concave surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface, and its surface, image side has at least one point of inflexion.The lens having refracting power in imaging optical lens group are six.Imaging optical lens group more comprises an aperture, is arranged between an object and the second lens.First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are respectively provided with an airspace between wantonly two adjacent lens on optical axis.When the radius of curvature on the 4th surface, lens image side is R8, the focal length of imaging optical lens group is f, aperture is SL to imaging surface distance on optical axis, first lens thing side surface is TL to imaging surface distance on optical axis, the abbe number of the second lens is V2, the abbe number of the 5th lens is V5, and it meets following condition:

0.3 < R8/f；

0.85 < SL/TL < 1.2；And

0.70<V2/V5。

The present invention separately provides a kind of image-taking device, and it comprises aforesaid imaging optical lens group and sense electronics optical element, and wherein sense electronics optical element is arranged on the imaging surface of imaging optical lens group.

The present invention separately provides a kind of electronic installation, and it comprises aforesaid image-taking device.

When R8/f meets above-mentioned condition, contribute to slowing down into image curvature, reduce the marginal aberrations such as astigmatism and coma simultaneously.

When SL/TL meets above-mentioned condition, can effectively shorten the total length of imaging optical lens group, to maintain miniaturization.

When f5/f6 meets above-mentioned condition, single lens refracting power can be avoided excessive and cause that aberration excessively increases, and principal point can be made with burnt after shortening further away from the image side end of imaging optical lens group, maintain the miniaturization of imaging optical lens group further.

When V2/V5 meets above-mentioned condition, contribute to revising the aberration of imaging optical lens group.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Accompanying drawing explanation

Fig. 1 is shown according to the image-taking device schematic diagram of first embodiment of the invention；

Fig. 2 is sequentially the spherical aberration of first embodiment, astigmatism and distortion curve figure from left to right；

Fig. 3 is shown according to the image-taking device schematic diagram of second embodiment of the invention；

Fig. 4 is sequentially the spherical aberration of the second embodiment, astigmatism and distortion curve figure from left to right；

Fig. 5 is shown according to the image-taking device schematic diagram of third embodiment of the invention；

Fig. 6 is sequentially the spherical aberration of the 3rd embodiment, astigmatism and distortion curve figure from left to right；

Fig. 7 is shown according to the image-taking device schematic diagram of fourth embodiment of the invention；

Fig. 8 is sequentially the spherical aberration of the 4th embodiment, astigmatism and distortion curve figure from left to right；

Fig. 9 is shown according to the image-taking device schematic diagram of fifth embodiment of the invention；

Figure 10 is sequentially the spherical aberration of the 5th embodiment, astigmatism and distortion curve figure from left to right；

Figure 11 is shown according to the image-taking device schematic diagram of sixth embodiment of the invention；

Figure 12 is sequentially the spherical aberration of sixth embodiment, astigmatism and distortion curve figure from left to right；

Figure 13 is shown according to the image-taking device schematic diagram of seventh embodiment of the invention；

Figure 14 is sequentially the spherical aberration of the 7th embodiment, astigmatism and distortion curve figure from left to right；

Figure 15 is shown according to the image-taking device schematic diagram of eighth embodiment of the invention；

Figure 16 is sequentially the spherical aberration of the 8th embodiment, astigmatism and distortion curve figure from left to right；

Figure 17 is shown according in Fig. 1 imaging optical lens group the schematic diagram of the critical point on the surface, limit k and the six lens image side on the 4th surface, lens image side；

Figure 18 is shown according to the schematic diagram of a kind of electronic installation of the present invention；

Figure 19 is shown according to the schematic diagram of the another kind of electronic installation of the present invention；

Figure 20 is shown according to the schematic diagram of still another electronic installation of the present invention.

Wherein, accompanying drawing labelling

Image-taking device 10

Aperture 100,200,300,400,500,600,700,800

First lens 110,210,310,410,510,610,710,810

Thing side surface 111,211,311,411,511,611,711,811

Surface, image side 112,212,312,412,512,612,712,812

Second lens 120,220,320,420,520,620,720,820

Thing side surface 121,221,321,421,521,621,721,821

Surface, image side 122,222,322,422,522,622,722,822

3rd lens 130,230,330,430,530,630,730,830

Thing side surface 131,231,331,431,531,631,731,831

Surface, image side 132,232,332,432,532,632,732,832

4th lens 140,240,340,440,540,640,740,840

Thing side surface 141,241,341,441,541,641,741,841

Surface, image side 142,242,342,442,542,642,742,842

5th lens 150,250,350,450,550,650,750,850

Thing side surface 151,251,351,451,551,651,751,851

Surface, image side 152,252,352,452,552,652,752,852

6th lens 160,260,360,460,560,660,760,860

Thing side surface 161,261,361,461,561,661,761,861

Surface, image side 162,262,362,462,562,662,762,862

Infrared ray filters filter element 170,270,370,470,570,670,770,870

Imaging surface 180,280,380,480,580,680,780,880

Sense electronics optical element 190,290,390,490,590,690,790,890

CT1: the first lens thickness on optical axis

CT2: the second lens thickness on optical axis

CT3: the three lens thickness on optical axis

CT4: the four lens thickness on optical axis

CT5: the five lens thickness on optical axis

CT6: the six lens thickness on optical axis

The focal length of f imaging optical lens group

The focal length of the f1: the first lens

The focal length of the f3: the three lens

The focal length of the f5: the five lens

The focal length of f6 the 6th lens

The f-number of Fno imaging optical lens group

The half at maximum visual angle in HFOV imaging optical lens group

ImgH: the maximum image height of imaging optical lens group

The radius of curvature of the R5: the three lens thing side surface

The radius of curvature of the R6: the three surface, lens image side

The radius of curvature of the R8: the four surface, lens image side

The radius of curvature of the R9: the five lens thing side surface

SL: aperture is to imaging surface distance on optical axis

TL: the first lens thing side surface is to imaging surface distance on optical axis

T12: the first lens and second lens spacing distance on optical axis

T23: the second lens and the 3rd lens spacing distance on optical axis

T34: the three lens and the 4th lens spacing distance on optical axis

T45: the four lens and the 5th lens spacing distance on optical axis

T56: the five lens and the 6th lens spacing distance on optical axis

The abbe number of the V1: the first lens

The abbe number of the V2: the second lens

The abbe number of the V5: the five lens

The critical point of the Yc62: the six surface, lens image side and the vertical dimension of optical axis

The limit k of the Yk42: the four surface, lens image side and the vertical dimension of optical axis

Detailed description of the invention

It is described in detail below in conjunction with the accompanying drawing structural principle to the present invention and operation principle:

Imaging optical lens group is sequentially comprised 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.Wherein, the lens having refracting power in imaging optical lens group are six.

First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are respectively provided with between wantonly two adjacent lens an airspace on optical axis, that is the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens can be six single disengaged (non-bondings) and the lens of tool refracting power.Owing to the more disengaged lens of the technique of cemented lens are complicated, the curved surface of high accuracy need to be had especially, in order to reach high adaptation when two lens engage on the composition surface of two lens, and in the process engaged, more likely cause shifting axle defect because of off normal, the overall optical imagery quality of impact.Therefore, the first lens in imaging optical lens group to the 6th lens can be the lens of six single disengaged tool refracting powers, and then is effectively improved problem produced by cemented lens.

First lens have positive refracting power, and its thing side surface can be convex surface in dipped beam axle place, and its surface, image side can be concave surface in dipped beam axle place.Whereby, it is possible to provide the positive refracting power needed for imaging optical lens group, and contribute to suitably adjust imaging optical lens group total length.

Second lens have negative refracting power, and its thing side surface can be convex surface in dipped beam axle place, and its surface, image side can be concave surface in dipped beam axle place.Whereby, the aberration that the first lens produce can be revised, and contribute to the astigmatism revising imaging optical lens group to promote image quality.

3rd lens can have positive refracting power, and its surface, image side can be convex surface in dipped beam axle place.Whereby, contribute to reducing the sensitivity of imaging optical lens group, and can effectively revise the spherical aberration of imaging optical lens group.

4th lens can have positive refracting power, and its thing side surface can be convex surface in dipped beam axle place, and its surface, image side is concave surface in dipped beam axle place, and its surface, image side can have at least one convex surface in off-axis place.Furthermore, its surface, image side includes at least one limit k, and this limit k is projected on the position of optical axis compared with its summit on optical axis, surface, image side closer to imaging optical lens group image side.Whereby, contribute to relaxing the focus strength of central vision, make central vision more consistent with the focusing power of surrounding visual field.

5th lens have negative refracting power, and its thing side surface can be concave surface in dipped beam axle place, and its surface, image side can be convex surface in dipped beam axle place.Whereby, the astigmatism revising imaging optical lens group is contributed to promote image quality.

6th lens have negative refracting power, its thing side surface can be convex surface in dipped beam axle, its surface, image side is concave surface in dipped beam axle place, its surface, image side has at least one point of inflexion, its thing side surface can have at least one concave surface and at least one convex surface in off-axis place, and be there is convex surface by dipped beam axle to off-axis place and transfer concave surface to and transfer the change (it is to say, the 6th lens thing side surface can sequentially be had a convex surface, a concave surface and a convex surface by dipped beam axle to off-axis place) of convex surface again in its thing side surface.Whereby, the negative refracting power of collocation the 5th lens contributes to the principal point making imaging optical lens group away from image side end, and then burnt after shortening, is beneficial to the miniaturization of imaging optical lens group.Additionally, also can effectively disperse the refracting power of imaging optical lens group to join cloth, excessive and produce veiling glare with the peripheral angle of avoiding imaging optical lens group minute surface.

The radius of curvature of the 4th surface, lens image side is R8, and the focal length of imaging optical lens group is f, and it meets following condition: 0.3 < R8/f.Whereby, the Petzval sum (Petzval'ssum) of imaging optical lens group can be revised, contribute to slowing down into image curvature, reduce the marginal aberrations such as astigmatism and coma simultaneously.It is preferred that it meets following condition: 0.5 < R8/f.

Imaging optical lens group more comprises an aperture, and aperture is SL to imaging surface distance on optical axis, and the first lens thing side surface is TL to imaging surface distance on optical axis, and it meets following condition: 0.65 < SL/TL < 1.2.Whereby, the total length of imaging optical lens group can effectively be shortened, to maintain miniaturization.It is preferred that it meets following condition: 0.85 < SL/TL < 1.2.

The focal length of the 5th lens is f5, and the focal length of the 6th lens is f6, and it meets following condition: 0 < f5/f6.Whereby, single lens refracting power can be avoided excessive and cause that aberration excessively increases, and principal point can be made with burnt after shortening further away from the image side end of imaging optical lens group, be beneficial to the miniaturization of imaging optical lens group.It is preferred that it meets following condition: 0.1 < f5/f6 < 10.

The abbe number of the second lens is V2, and the abbe number of the 5th lens is V5, and it meets following condition: 0.70 < V2/V5.Whereby, contribute to revising the aberration of imaging optical lens group.

The radius of curvature of the 4th surface, lens image side is R8, and the focal length of imaging optical lens group is f, and the abbe number of the first lens is V1, and the abbe number of the 5th lens is V5, and it meets following condition: 0 < R8/ [f* (V1-V5)] < 3.Whereby, the abbe number of the 5th lens can do suitably allotment with the abbe number of the radius of curvature on the 4th surface, lens image side and the first lens, to balance imaging optical lens group aberration.

The radius of curvature of the 3rd lens thing side surface is R5, and the radius of curvature on the 3rd surface, lens image side is R6, and the radius of curvature on the 4th surface, lens image side is R8, and it meets following condition: 0 < R8/ (| R5 |+| R6 |) < 2.45.Whereby, contribute to revising the spherical aberration of imaging optical lens group.

First lens and second lens spacing distance on optical axis are T12, second lens and the 3rd lens spacing distance on optical axis are T23,3rd lens and the 4th lens spacing distance on optical axis are T34,4th lens and the 5th lens spacing distance on optical axis are T45,5th lens and the 6th lens spacing distance on optical axis are T56, and it meets following condition: 0 < T12 < T34 < T23 < T45；And 0 < T12 < T56 < T23 < T45.Whereby, can suitably adjust the spacing between lens, contribute to reducing the total length of imaging optical lens group, maintain its miniaturization.

The critical point of the 6th surface, lens image side and the vertical dimension of optical axis are Yc62, and the focal length of imaging optical lens group is f, and it meets following condition: 0.1 < Yc62/f < 0.7.Whereby, contribute to the principal point making imaging optical lens group further away from image side end, to shorten the total length of imaging optical lens group, and the light of the off-axis visual field angle on sense electronics optical element can be suppressed, to increase the receiving efficiency of sense electronics optical element, the aberration of further modified off-axis visual field.Refer to Figure 17, be shown according in Fig. 1 imaging optical lens group the critical point schematic diagram on the 6th surface, lens image side.The critical point (CriticalPoint) of the 6th surface, lens image side is the point of contact being perpendicular on the tangent plane of optical axis and the tangent line of the 6th lens image side plane tangent；It is noted that critical point is not on optical axis.

4th surface, lens image side includes at least one limit k, and this limit k is projected on the position of optical axis compared with its summit on optical axis, surface, image side closer to imaging optical lens group image side (this means, this limit k is projected on position to the imaging optical lens group image side of optical axis spacing distance on optical axis less than summit to the imaging optical lens group image side on optical axis, the 4th surface, lens image side spacing distance on optical axis)；And the vertical dimension of the limit k on the 4th surface, lens image side and optical axis is Yk42, the focal length of the 5th lens is f5, and meets following condition :-1.0 < Yk42/f5 < 0.Whereby, can effectively suppress light angle on sense electronics optical element, with modified off-axis visual field aberration.Refer to Figure 17, be shown according in Fig. 1 imaging optical lens group the schematic diagram of limit k and the Yk42 on the 4th surface, lens image side.

First lens thing side surface is TL to imaging surface distance on optical axis, the maximum image height of imaging optical lens group is ImgH (being the half of effective sensing region diagonal overall length of sense electronics optical element), and it meets following condition: TL/ImgH < 2.0.Whereby, the miniaturization of imaging optical lens group can be conducive to avoid volume excessive so that it is be more suitably applied to electronic installation.

The radius of curvature of the 4th surface, lens image side is R8, and the radius of curvature of the 5th lens thing side surface is R9, and it meets following condition :-19 < R8/R9 < 0.Whereby, the curvature of the 4th lens and the 5th lens is comparatively suitable, contributes to effectively revising the astigmatism of imaging optical lens group, to promote the image quality at off-axis place.First lens thickness on optical axis is CT1, second lens thickness on optical axis is CT2, 3rd lens thickness on optical axis is CT3, 4th lens thickness on optical axis is CT4, 5th lens thickness on optical axis is CT5, 6th lens thickness on optical axis is CT6, it meets following condition: < CT6 (implies that CT2 and CT4 and CT5 < CT1 and CT3, first lens and the 3rd lens thickness on optical axis are more than the second lens, 4th lens and the 5th lens thickness on optical axis, simultaneously the 6th lens thickness on optical axis more than the first lens and the 3rd lens the thickness on optical axis).Whereby, the thickness of each lens is comparatively suitable, contributes to the eyeglass homogeneity when making and mouldability.

The focal length of the first lens is f1, and the focal length of the 3rd lens is f3, and it meets following condition: 0.1 < | f1/f3 |.Whereby, imaging optical lens group can be balanced and configure in the refracting power of thing side, to avoid spherical aberration excessively to produce, effectively reduce the sensitivity of imaging optical lens group simultaneously.

In imaging optical lens group, the configuration of aperture can be preposition aperture or mid-aperture.Wherein preposition aperture implies that aperture is arranged between object and the first lens, and mid-aperture then represents that aperture is arranged between the first lens and imaging surface.If aperture is preposition aperture, the outgoing pupil (ExitPupil) that can make imaging optical lens group produces longer distance with imaging surface, make it have telecentricity (Telecentric) effect, and CCD or CMOS that can increase sense electronics optical element receives the efficiency of image；If mid-aperture, contribute to the angle of visual field of expansion system, make imaging optical lens group have the advantage of wide-angle lens.

In the imaging optical lens group that the invention discloses, the material of lens can be plastic cement or glass.When the material of lens is glass, it is possible to increase the degree of freedom of refracting power configuration.Another lens material of working as is plastic cement, then can effectively reduce production cost.Additionally, aspheric surface (ASP) can be arranged on lens surface, aspheric surface can easily be fabricated to the shape beyond sphere, obtain more controlled variable, in order to cut down aberration, and then the required number using lens of reduction, therefore can effectively reduce optics total length.

In the imaging optical lens group that the invention discloses, if lens surface is convex surface and when not defining this convex surface position, then it represents that this lens surface is convex surface in dipped beam axle place；If lens surface is concave surface and when not defining this concave surface position, then it represents that this lens surface is concave surface in dipped beam axle place.If the refracting power of lens or focal length do not define its regional location, then it represents that the refracting power of these lens or focal length are the lens refracting power in dipped beam axle place or focal length.

In the imaging optical lens group that the invention discloses, the imaging surface (ImageSurface) of imaging optical lens group is according to the difference of the sense electronics optical element of its correspondence, can be a plane or the curved surface having arbitrary curvature, particularly relate to concave surface towards toward thing side to curved surface.

In the imaging optical lens group that the invention discloses, at least one diaphragm can be provided with, before its position may be disposed at the first lens, between each lens or after last lens, the kind of this diaphragm such as credit light diaphragm (GlareStop) or field stop (FieldStop) etc., in order to reduce veiling glare, contribute to promoting image quality.

The present invention more provides a kind of image-taking device, and it comprises aforementioned imaging optical lens group and sense electronics optical element, and wherein sense electronics optical element is arranged on the imaging surface of imaging optical lens group.It is preferred that this image-taking device can further include lens barrel (BarrelMember), supports device (HolderMember) or its combination.

Refer to Figure 18, Figure 19 and Figure 20, image-taking device 10 many-side can be applied to intelligent mobile phone (as shown in figure 18), tablet PC (as shown in figure 19) and Wearable device (as shown in figure 20) etc..It is preferred that electronic installation can further include control unit (ControlUnits), display unit (DisplayUnits), storage element (StorageUnits), random access memory (RAM) or its combination.

The more visual demand of imaging optical lens group of the present invention is applied in the optical system of mobile focusing, and has the characteristic of excellent lens error correction and good image quality concurrently.The present invention also can many-side be applied in the electronic installations such as three-dimensional (3D) image capture, digital camera, mobile device, tablet PC, intelligent TV, network monitoring device, drive recorder, reversing developing unit, somatic sensation television game machine and Wearable device.Before to take off electronic installation be only the practice example that the present invention is exemplarily described, and the operation strategies of the image-taking device of the unrestricted present invention.

According to above-mentioned embodiment, specific embodiment set forth below also coordinates accompanying drawing to be described in detail.

<first embodiment>

Refer to Fig. 1 and Fig. 2, wherein Fig. 1 is shown according to the image-taking device schematic diagram of first embodiment of the invention, and Fig. 2 is sequentially the spherical aberration of first embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 1, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 190.Imaging optical lens group is sequentially comprised aperture the 100, first lens the 110, second lens the 120, the 3rd lens the 130, the 4th lens the 140, the 5th lens the 150, the 6th lens 160 by thing side to image side, infrared ray filters filter element (IR-cutFilter) 170 and imaging surface 180.Wherein, sense electronics optical element 190 is arranged on imaging surface 180.The single disengaged lens having refracting power in imaging optical lens group are six (110-160).First lens the 110, second lens the 120, the 3rd lens the 130, the 4th lens the 140, the 5th lens 150 and the 6th lens 160 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 110 have positive refracting power, and are plastic cement material, and its thing side surface 111 is convex surface in dipped beam axle place, and its surface, image side 112 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 120 have negative refracting power, and are plastic cement material, and its thing side surface 121 is convex surface in dipped beam axle place, and its surface, image side 122 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 130 have positive refracting power, and are plastic cement material, and its thing side surface 131 is concave surface in dipped beam axle place, and its surface, image side 132 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 140 have positive refracting power, and are plastic cement material, and its thing side surface 141 is convex surface in dipped beam axle place, and its surface, image side 142 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 142 has at least one convex surface in off-axis place.

5th lens 150 have negative refracting power, and are plastic cement material, and its thing side surface 151 is concave surface in dipped beam axle place, and its surface, image side 152 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 160 have negative refracting power, and be plastic cement material, its thing side surface 161 is convex surface in dipped beam axle place, its surface, image side 162 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 162 has at least one point of inflexion, and its thing side surface 161 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 161 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 170, and it is arranged between the 6th lens 160 and imaging surface 180, has no effect on the focal length of imaging optical lens group.

The aspheric fitting equation of above-mentioned each lens is expressed as follows:

$X\left(Y\right)=(Y^2/R)/(1+\mathrm{sqrt}(1-(1+k)\&times;{(Y/R)}^2))+\underset{i}{\mathrm{\&Sigma;}}\left(\mathrm{Ai}\right)\&times;\left(Y^i\right)$

；Wherein:

X: in aspheric surface, distance optical axis is the point of Y, its be tangential on aspheric surface optical axis the relative distance of the tangent plane of intersection point；

Y: the vertical dimension of the point in aspheric curve and optical axis；

R: radius of curvature；

K: conical surface coefficient；And

Ai: the i-th rank asphericity coefficient.

In the imaging optical lens group of first embodiment, the focal length of imaging optical lens group is f, the f-number (F-number) of imaging optical lens group is Fno, in imaging optical lens group, the half at maximum visual angle is HFOV, its numerical value is as follows: f=4.33mm (millimeter), Fno=2.20, HFOV=32.1 degree (deg.).

The abbe number of the second lens 120 is V2, and the abbe number of the 5th lens 150 is V5, and it meets following condition: V2/V5=1.00.

The radius of curvature of the 4th surface, lens image side 142 is R8, and the focal length of imaging optical lens group is f, and it meets following condition: R8/f=0.72.

The radius of curvature of the 4th surface, lens image side 142 is R8, and the radius of curvature of the 5th lens thing side surface 151 is R9, and it meets following condition: R8/R9=-2.02.

The radius of curvature of the 4th surface, lens image side 142 is R8, and the focal length of imaging optical lens group is f, and the abbe number of the first lens 110 is V1, and the abbe number of the 5th lens 150 is V5, and it meets following condition: R8/ [f* (V1-V5)]=0.02.

The radius of curvature of the 3rd lens thing side surface 131 is R5, and the radius of curvature on the 3rd surface, lens image side 132 is R6, and the radius of curvature on the 4th surface, lens image side 142 is R8, and it meets following condition: R8/ (| R5 |+| R6 |)=0.53.

The limit k of the 4th surface, lens image side 142 and the vertical dimension of optical axis are Yk42, and the focal length of the 5th lens 150 is f5, and it meets following condition: Yk42/f5=-0.05.

The critical point of the 6th surface, lens image side 162 and the vertical dimension of optical axis are Yc62, and the focal length of imaging optical lens group is f, and it meets following condition: Yc62/f=0.25.

The focal length of the first lens 110 is f1, and the focal length of the 3rd lens 130 is f3, and it meets following condition: | f1/f3 |=0.18.

The focal length of the 5th lens 150 is f5, and the focal length of the 6th lens 160 is f6, and it meets following condition: f5/f6=1.23.

Aperture 100 to the imaging surface 180 distance on optical axis is SL, and first lens thing side surface 111 to the imaging surface 180 distance on optical axis is TL, and it meets following condition: SL/TL=0.95.

First lens thing side surface 111 to the imaging surface 180 distance on optical axis is TL, and the maximum image height of imaging optical lens group is ImgH, and it meets following condition: TL/ImgH=1.81.

Coordinate with reference to lower list one and table two.

Table one is the structured data that Fig. 1 first embodiment is detailed, and wherein the unit of radius of curvature, thickness and focal length is mm (millimeter), and surface 0 to 16 sequentially represents by the surface of thing side to image side.Table two is the aspherical surface data in first embodiment, and wherein, k is the conical surface coefficient in aspheric curve equation, and A4 to A16 then represents rank, each surface the 4 to 16th asphericity coefficient.Additionally, following embodiment form is schematic diagram and the aberration curve figure of corresponding each embodiment, in form, the definition of data is all identical with the definition of the table one of first embodiment and table two, and not in this to go forth.

<the second embodiment>

Refer to Fig. 3 and Fig. 4, wherein Fig. 3 is shown according to the image-taking device schematic diagram of second embodiment of the invention, and Fig. 4 is sequentially the spherical aberration of the second embodiment, astigmatism and distortion curve figure from left to right.From the figure 3, it may be seen that image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 290.Imaging optical lens group is sequentially comprised aperture the 200, first lens the 210, second lens the 220, the 3rd lens the 230, the 4th lens the 240, the 5th lens the 250, the 6th lens 260 by thing side to image side, infrared ray filters filter element 270 and imaging surface 280.Wherein, sense electronics optical element 290 is arranged on imaging surface 280.The single disengaged lens having refracting power in imaging optical lens group are six (210-260).First lens the 210, second lens the 220, the 3rd lens the 230, the 4th lens the 240, the 5th lens 250 and the 6th lens 260 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 210 have positive refracting power, and are plastic cement material, and its thing side surface 211 is convex surface in dipped beam axle place, and its surface, image side 212 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 220 have negative refracting power, and are plastic cement material, and its thing side surface 221 is concave surface in dipped beam axle place, and its surface, image side 222 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 230 have negative refracting power, and are plastic cement material, and its thing side surface 231 is concave surface in dipped beam axle place, and its surface, image side 232 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 240 have positive refracting power, and are plastic cement material, and its thing side surface 241 is convex surface in dipped beam axle place, and its surface, image side 242 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 242 has at least one convex surface in off-axis place.

5th lens 250 have negative refracting power, and are plastic cement material, and its thing side surface 251 is concave surface in dipped beam axle place, and its surface, image side 252 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 260 have negative refracting power, and be plastic cement material, its thing side surface 261 is convex surface in dipped beam axle place, its surface, image side 262 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 262 has at least one point of inflexion, and its thing side surface 261 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 261 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 270, and it is arranged between the 6th lens 260 and imaging surface 280, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list three and table four.

In second embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<the 3rd embodiment>

Refer to the 5th figure and the 6th figure, wherein the 5th figure is shown according to the image-taking device schematic diagram of third embodiment of the invention, and the 6th figure is sequentially the spherical aberration of the 3rd embodiment, astigmatism and distortion curve figure from left to right.By the 5th figure it can be seen that image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 390.Imaging optical lens group is sequentially comprised aperture the 300, first lens the 310, second lens the 320, the 3rd lens the 330, the 4th lens the 340, the 5th lens the 350, the 6th lens 360 by thing side to image side, infrared ray filters filter element 370 and imaging surface 380.Wherein, sense electronics optical element 390 is arranged on imaging surface 380.The single disengaged lens having refracting power in imaging optical lens group are six (310-360).First lens the 310, second lens the 320, the 3rd lens the 330, the 4th lens the 340, the 5th lens 350 and the 6th lens 360 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 310 have positive refracting power, and are plastic cement material, and its thing side surface 311 is convex surface in dipped beam axle place, and its surface, image side 312 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 320 have negative refracting power, and are plastic cement material, and its thing side surface 321 is convex surface in dipped beam axle place, and its surface, image side 322 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 330 have positive refracting power, and are plastic cement material, and its thing side surface 331 is convex surface in dipped beam axle place, and its surface, image side 332 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 340 have positive refracting power, and are plastic cement material, and its thing side surface 341 is convex surface in dipped beam axle place, and its surface, image side 342 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 342 has at least one convex surface in off-axis place.

5th lens 350 have negative refracting power, and are plastic cement material, and its thing side surface 351 is concave surface in dipped beam axle place, and its surface, image side 352 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 360 have negative refracting power, and are plastic cement material, and its thing side surface 361 is concave surface in dipped beam axle place, and its surface, image side 362 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 362 has at least one point of inflexion.

It is glass that infrared ray filters the material of filter element 370, and it is arranged between the 6th lens 360 and imaging surface 380, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list five and table six.

In 3rd embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<the 4th embodiment>

Refer to Fig. 7 and Fig. 8, wherein Fig. 7 is shown according to the image-taking device schematic diagram of fourth embodiment of the invention, and Fig. 8 is sequentially the spherical aberration of the 4th embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 7, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 490.Imaging optical lens group is sequentially comprised aperture the 400, first lens the 410, second lens the 420, the 3rd lens the 430, the 4th lens the 440, the 5th lens the 450, the 6th lens 460 by thing side to image side, infrared ray filters filter element 470 and imaging surface 480.Wherein, sense electronics optical element 490 is arranged on imaging surface 480.The single disengaged lens having refracting power in imaging optical lens group are six (410-460).First lens the 410, second lens the 420, the 3rd lens the 430, the 4th lens the 440, the 5th lens 450 and the 6th lens 460 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 410 have positive refracting power, and are plastic cement material, and its thing side surface 411 is convex surface in dipped beam axle place, and its surface, image side 412 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 420 have negative refracting power, and are plastic cement material, and its thing side surface 421 is convex surface in dipped beam axle place, and its surface, image side 422 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 430 have positive refracting power, and are plastic cement material, and its thing side surface 431 is convex surface in dipped beam axle place, and its surface, image side 432 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 440 have negative refracting power, and are plastic cement material, and its thing side surface 441 is concave surface in dipped beam axle place, and its surface, image side 442 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 442 has at least one convex surface in off-axis place.

5th lens 450 have negative refracting power, and are plastic cement material, and its thing side surface 451 is concave surface in dipped beam axle place, and its surface, image side 452 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 460 have negative refracting power, and be plastic cement material, its thing side surface 461 is convex surface in dipped beam axle place, its surface, image side 462 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 462 has at least one point of inflexion, and its thing side surface 461 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 461 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 470, and it is arranged between the 6th lens 460 and imaging surface 480, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list seven and table eight.

In 4th embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<the 5th embodiment>

Refer to Fig. 9 and Figure 10, wherein Fig. 9 is shown according to the image-taking device schematic diagram of fifth embodiment of the invention, and Figure 10 is sequentially the spherical aberration of the 5th embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 9, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 590.Imaging optical lens group is sequentially comprised the first lens 510 by thing side to image side, aperture the 500, second lens the 520, the 3rd lens the 530, the 4th lens the 540, the 5th lens the 550, the 6th lens 560, infrared ray filter filter element 570 and imaging surface 580.Wherein, sense electronics optical element 590 is arranged on imaging surface 580.The single disengaged lens having refracting power in imaging optical lens group are six (510-560).First lens the 510, second lens the 520, the 3rd lens the 530, the 4th lens the 540, the 5th lens 550 and the 6th lens 560 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 510 have positive refracting power, and are plastic cement material, and its thing side surface 511 is convex surface in dipped beam axle place, and its surface, image side 512 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 520 have negative refracting power, and are plastic cement material, and its thing side surface 521 is convex surface in dipped beam axle place, and its surface, image side 522 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 530 have positive refracting power, and are plastic cement material, and its thing side surface 531 is convex surface in dipped beam axle place, and its surface, image side 532 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 540 have positive refracting power, and are plastic cement material, and its thing side surface 541 is convex surface in dipped beam axle place, and its surface, image side 542 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 542 has at least one convex surface in off-axis place.

5th lens 550 have negative refracting power, and are plastic cement material, and its thing side surface 551 is concave surface in dipped beam axle place, and its surface, image side 552 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 560 have negative refracting power, and be plastic cement material, its thing side surface 561 is convex surface in dipped beam axle place, its surface, image side 562 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 562 has at least one point of inflexion, and its thing side surface 561 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 561 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 570, and it is arranged between the 6th lens 560 and imaging surface 580, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list nine and table ten.

In 5th embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<sixth embodiment>

Refer to Figure 11 and Figure 12, wherein Figure 11 is shown according to the image-taking device schematic diagram of sixth embodiment of the invention, and Figure 12 is sequentially the spherical aberration of sixth embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 11, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 690.Imaging optical lens group is sequentially comprised circle the 600, first lens the 610, second lens the 620, the 3rd lens the 630, the 4th lens the 640, the 5th lens the 650, the 6th lens 660 by thing side to image side, infrared ray filters filter element 670 and imaging surface 680.Wherein, sense electronics optical element 690 is arranged on imaging surface 680.The single disengaged lens having refracting power in imaging optical lens group are six (610-660).First lens the 610, second lens the 620, the 3rd lens the 630, the 4th lens the 640, the 5th lens 650 and the 6th lens 660 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 610 have positive refracting power, and are glass material, and its thing side surface 611 is convex surface in dipped beam axle place, and its surface, image side 612 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 620 have negative refracting power, and are plastic cement material, and its thing side surface 621 is convex surface in dipped beam axle place, and its surface, image side 622 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 630 have negative refracting power, and are plastic cement material, and its thing side surface 631 is convex surface in dipped beam axle place, and its surface, image side 632 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 640 have positive refracting power, and are plastic cement material, and its thing side surface 641 is convex surface in dipped beam axle place, and its surface, image side 642 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 642 has at least one convex surface in off-axis place.

5th lens 650 have negative refracting power, and are plastic cement material, and its thing side surface 651 is concave surface in dipped beam axle place, and its surface, image side 652 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 660 have negative refracting power, and be plastic cement material, its thing side surface 661 is convex surface in dipped beam axle place, its surface, image side 662 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 662 has at least one point of inflexion, and its thing side surface 661 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 661 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 670, and it is arranged between the 6th lens 660 and imaging surface 680, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list 11 and table 12.

In sixth embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<the 7th embodiment>

Refer to Figure 13 and Figure 14, wherein Figure 13 is shown according to the image-taking device schematic diagram of seventh embodiment of the invention, and Figure 14 is sequentially the spherical aberration of the 7th embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 13, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 790.Imaging optical lens group is sequentially comprised aperture the 700, first lens the 710, second lens the 720, the 3rd lens the 730, the 4th lens the 740, the 5th lens the 750, the 6th lens 760 by thing side to image side, infrared ray filters filter element 770 and imaging surface 780.Wherein, sense electronics optical element 790 is arranged on imaging surface 780.The single disengaged lens having refracting power in imaging optical lens group are six (710-760).First lens the 710, second lens the 720, the 3rd lens the 730, the 4th lens the 740, the 5th lens 750 and the 6th lens 760 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 710 have positive refracting power, and are plastic cement material, and its thing side surface 711 is convex surface in dipped beam axle place, and its surface, image side 712 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 720 have negative refracting power, and are plastic cement material, and its thing side surface 721 is convex surface in dipped beam axle place, and its surface, image side 722 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 730 have positive refracting power, and are plastic cement material, and its thing side surface 731 is convex surface in dipped beam axle place, and its surface, image side 732 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 740 have positive refracting power, and are plastic cement material, and its thing side surface 741 is convex surface in dipped beam axle place, and its surface, image side 742 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 742 has at least one convex surface in off-axis place.

5th lens 750 have negative refracting power, and are plastic cement material, and its thing side surface 751 is concave surface in dipped beam axle place, and its surface, image side 752 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 760 have negative refracting power, and be plastic cement material, its thing side surface 761 is convex surface in dipped beam axle place, its surface, image side 762 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 762 has at least one point of inflexion, and its thing side surface 761 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 761 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 770, and it is arranged between the 6th lens 760 and imaging surface 780, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list 13 and table 14.

In 7th embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

<the 8th embodiment>

Refer to Figure 15 and Figure 16, wherein Figure 15 is shown according to the image-taking device schematic diagram of eighth embodiment of the invention, and Figure 16 is sequentially the spherical aberration of the 8th embodiment, astigmatism and distortion curve figure from left to right.As shown in Figure 15, image-taking device comprises imaging optical lens group (not another label) and sense electronics optical element 890.Imaging optical lens group is sequentially comprised aperture the 800, first lens the 810, second lens the 820, the 3rd lens the 830, the 4th lens the 840, the 5th lens the 850, the 6th lens 860 by thing side to image side, infrared ray filters filter element 870 and imaging surface 880.Wherein, sense electronics optical element 890 is arranged on imaging surface 880.The single disengaged lens having refracting power in imaging optical lens group are six (810-860).First lens the 810, second lens the 820, the 3rd lens the 830, the 4th lens the 840, the 5th lens 850 and the 6th lens 860 are respectively provided with an airspace between wantonly two adjacent lens on optical axis.

First lens 810 have positive refracting power, and are plastic cement material, and its thing side surface 811 is convex surface in dipped beam axle place, and its surface, image side 812 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

Second lens 820 have negative refracting power, and are plastic cement material, and its thing side surface 821 is convex surface in dipped beam axle place, and its surface, image side 822 is concave surface in dipped beam axle place, and its two surface is all aspheric surface.

3rd lens 830 have negative refracting power, and are plastic cement material, and its thing side surface 831 is concave surface in dipped beam axle place, and its surface, image side 832 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

4th lens 840 have positive refracting power, and are plastic cement material, and its thing side surface 841 is convex surface in dipped beam axle place, and its surface, image side 842 is concave surface in dipped beam axle place, and its two surface is all aspheric surface, and its surface, image side 842 has at least one convex surface in off-axis place.

5th lens 850 have negative refracting power, and are plastic cement material, and its thing side surface 851 is concave surface in dipped beam axle place, and its surface, image side 852 is convex surface in dipped beam axle place, and its two surface is all aspheric surface.

6th lens 860 have negative refracting power, and be plastic cement material, its thing side surface 861 is convex surface in dipped beam axle place, its surface, image side 862 is concave surface in dipped beam axle place, its two surface is all aspheric surface, its surface, image side 862 has at least one point of inflexion, and its thing side surface 861 has at least one concave surface and an at least one convex surface in off-axis place, and its thing side surface 861 is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

It is glass that infrared ray filters the material of filter element 870, and it is arranged between the 6th lens 860 and imaging surface 880, has no effect on the focal length of imaging optical lens group.

Please coordinate with reference to lower list 15 and table 16.

In 8th embodiment, aspheric fitting equation represents the form such as first embodiment.Additionally, the definition described in following table is all identical with first embodiment, not in this to go forth.

Above-mentioned image-taking device can be equipped in electronic installation.The present invention uses the imaging optical lens group of six tool refracting power lens, wherein the 5th lens and the 6th lens have negative refracting power simultaneously, contribute to the principal point making imaging optical lens group away from image side end, so burnt after shortening, it is beneficial to the miniaturization of imaging optical lens group.Additionally, also can effectively disperse the refracting power of imaging optical lens group to join cloth, excessive and produce veiling glare with the peripheral angle of avoiding imaging optical lens group minute surface.It addition, the 4th surface, lens image side is concave surface in dipped beam axle place, contributes to relaxing the focus strength of central vision, make central vision more consistent with the focusing power of surrounding visual field.Furthermore, when meeting specified conditions, more can help to slow down into image curvature, reduce the marginal aberrations such as astigmatism and coma simultaneously.

Although the present invention is disclosed above with embodiment; so it is not limited to the present invention, any is familiar with this those skilled in the art, without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore protection scope of the present invention ought be as the criterion depending on the scope that appending claims defines.

Claims (27)

1. an imaging optical lens group, it is characterised in that sequentially comprised to image side by thing side:

One first lens, have positive refracting power, and its thing side surface is convex surface in dipped beam axle place；

One second lens, have negative refracting power；

One the 3rd lens, have refracting power；

One the 4th lens, have refracting power, and its surface, image side is concave surface in dipped beam axle place；

One the 5th lens, have negative refracting power, and its thing side surface is concave surface in dipped beam axle place, and its surface, image side is convex surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface；And

One the 6th lens, have negative refracting power, and its surface, image side is concave surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface, and its surface, image side has at least one point of inflexion；

Wherein, the lens having refracting power in this imaging optical lens group are six, and this imaging optical lens group more comprises an aperture, and this aperture is arranged between an object and the 3rd lens；

Wherein, the radius of curvature of the 4th surface, lens image side is R8, the focal length of this imaging optical lens group is f, the focal length of the 5th lens is f5, the focal length of the 6th lens is f6, this aperture is SL to imaging surface distance on optical axis, and this first lens thing side surface is TL to this imaging surface distance on optical axis, and it meets following condition:

0.3 < R8/f；

0.65 < SL/TL < 1.2；And

0<f5/f6。

2. imaging optical lens group according to claim 1, it is characterised in that the 4th lens thing side surface is convex surface in dipped beam axle place.

3. imaging optical lens group according to claim 1, it is characterised in that the 6th lens thing side surface is convex surface in dipped beam axle place.

4. imaging optical lens group according to claim 1, it is characterised in that the 3rd surface, lens image side is convex surface in dipped beam axle place.

5. imaging optical lens group according to claim 1, it is characterised in that the 3rd lens have positive refracting power.

6. imaging optical lens group according to claim 1, it is characterised in that the radius of curvature on the 4th surface, lens image side is R8, the focal length of this imaging optical lens group is f, the abbe number of these the first lens is V1, and the abbe number of the 5th lens is V5, and it meets following condition:

0<R8/[f*(V1-V5)]<3。

7. imaging optical lens group according to claim 1, it is characterised in that the focal length of the 5th lens is f5, and the focal length of the 6th lens is f6, and it meets following condition:

0.1<f5/f6<10。

8. imaging optical lens group according to claim 1, it is characterized in that, the radius of curvature of the 3rd lens thing side surface is R5, and the radius of curvature on the 3rd surface, lens image side is R6, the radius of curvature of the 4th surface, lens image side is R8, and it meets following condition:

0<R8/(|R5|+|R6|)<2.45。

9. imaging optical lens group according to claim 1, it is characterized in that, these first lens and this second lens spacing distance on optical axis are T12, these second lens and the 3rd lens spacing distance on optical axis are T23,3rd lens and the 4th lens spacing distance on optical axis are T34,4th lens and the 5th lens spacing distance on optical axis are T45, and the 5th lens and the 6th lens spacing distance on optical axis are T56, and it meets following condition:

0 < T12 < T34 < T23 < T45；And

0<T12<T56<T23<T45。

10. imaging optical lens group according to claim 1, it is characterised in that the critical point on the 6th surface, lens image side and the vertical dimension of optical axis are Yc62, and the focal length of this imaging optical lens group is f, and it meets following condition:

0.1<Yc62/f<0.7。

11. imaging optical lens group according to claim 1, it is characterised in that the abbe number of these the second lens is V2, and the abbe number of the 5th lens is V5, and it meets following condition:

0.70<V2/V5。

12. imaging optical lens group according to claim 1, it is characterised in that the 4th surface, lens image side has at least one convex surface in off-axis place.

13. imaging optical lens group according to claim 1, it is characterized in that, 4th surface, lens image side comprises at least one limit k, this limit k is projected on the relatively summit on optical axis, the 4th surface, lens image side, position of optical axis closer to this imaging optical lens group image side, and the 4th the vertical dimension of limit k and optical axis on surface, lens image side be Yk42, the focal length of the 5th lens is f5, and it meets following condition:

-1.0<Yk42/f5<0。

14. an image-taking device, it is characterised in that comprise:

Imaging optical lens group according to claim 1；And

One sense electronics optical element, wherein, this sense electronics optical element is arranged on an imaging surface of this imaging optical lens group.

15. an electronic installation, it is characterised in that comprise:

Image-taking device as claimed in claim 14.

16. an imaging optical lens group, it is characterised in that sequentially comprised to image side by thing side:

One first lens, have positive refracting power；

One second lens, have negative refracting power, and its surface, image side is concave surface in dipped beam axle place；

One the 3rd lens, have refracting power；

One the 4th lens, have refracting power, and its surface, image side is concave surface in dipped beam axle place；

One the 5th lens, have negative refracting power, and its thing side surface and surface, image side are all aspheric surface；And

One the 6th lens, have negative refracting power, and its surface, image side is concave surface in dipped beam axle place, and its thing side surface and surface, image side are all aspheric surface, and its surface, image side has at least one point of inflexion；

Wherein, the lens having refracting power in this imaging optical lens group are six, this imaging optical lens group more comprises an aperture, this aperture is arranged between an object and this second lens, is respectively provided with an airspace in these first lens, these second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens between wantonly two adjacent lens on optical axis；

Wherein, the radius of curvature of the 4th surface, lens image side is R8, the focal length of this imaging optical lens group is f, this aperture is SL to imaging surface distance on optical axis, this the first lens thing side surface is TL to this imaging surface distance on optical axis, the abbe number of these the second lens is V2, and the abbe number of the 5th lens is V5, and it meets following condition:

0.3 < R8/f；

0.85 < SL/TL < 1.2；And

0.70<V2/V5。

17. imaging optical lens group according to claim 16, it is characterised in that this surface, the first lens image side is concave surface in dipped beam axle place.

18. imaging optical lens group according to claim 16, it is characterised in that this second lens thing side surface is convex surface in dipped beam axle place.

19. imaging optical lens group according to claim 16, it is characterised in that the 4th lens have positive refracting power.

20. imaging optical lens group according to claim 16, it is characterised in that the radius of curvature on the 4th surface, lens image side is R8, the focal length of this imaging optical lens group is f, and it meets following condition:

5.0<R8/f。

21. imaging optical lens group according to claim 16, it is characterised in that this first lens thing side surface is TL to this imaging surface distance on optical axis, and the maximum image height of this imaging optical lens group is ImgH, and it meets following condition:

TL/ImgH<2.0。

22. imaging optical lens group according to claim 16, it is characterised in that the radius of curvature on the 4th surface, lens image side is R8, the focal length of this imaging optical lens group is f, the abbe number of these the first lens is V1, and the abbe number of the 5th lens is V5, and it meets following condition:

0<R8/[f*(V1-V5)]<3。

23. imaging optical lens group according to claim 16, it is characterised in that the radius of curvature on the 4th surface, lens image side is R8, the radius of curvature of the 5th lens thing side surface is R9, and it meets following condition:

-19<R8/R9<0。

24. imaging optical lens group according to claim 16, it is characterized in that, this the first lens thickness on optical axis is CT1, this the second lens thickness on optical axis is CT2,3rd lens thickness on optical axis is CT3, and the 4th lens thickness on optical axis is CT4, and the 5th lens thickness on optical axis is CT5,6th lens thickness on optical axis is CT6, and it meets following condition:

CT2 and CT4 and CT5 < CT1 and CT3 < CT6.

25. imaging optical lens group according to claim 16, it is characterised in that the focal length of these the first lens is f1, and the focal length of the 3rd lens is f3, and it meets following condition:

0.1<|f1/f3|。

26. imaging optical lens group according to claim 16, it is characterized in that, 6th lens thing side surface is convex surface in dipped beam axle place, 6th lens thing side surface has at least one concave surface and an at least one convex surface in off-axis place, and the 6th lens thing side surface is existed convex surface by dipped beam axle to off-axis place and transfers concave surface to and transfer the change of convex surface again to.

27. imaging optical lens group according to claim 16, it is characterized in that, 4th surface, lens image side comprises at least one limit k, this limit k is projected on the relatively summit on optical axis, the 4th surface, lens image side, position of optical axis closer to this imaging optical lens group image side, and the 4th the vertical dimension of limit k and optical axis on surface, lens image side be Yk42, the focal length of the 5th lens is f5, and it meets following condition:

-1.0<Yk42/f5<0。