CN105676412B - Five chip optical imaging lens groups - Google Patents
Five chip optical imaging lens groups Download PDFInfo
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- CN105676412B CN105676412B CN201410657930.4A CN201410657930A CN105676412B CN 105676412 B CN105676412 B CN 105676412B CN 201410657930 A CN201410657930 A CN 201410657930A CN 105676412 B CN105676412 B CN 105676412B
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Abstract
The present invention discloses a kind of five chip optical imaging lens groups, is sequentially included by thing side to image side：First lens have positive refractive power, and its image side optical surface and thing side optical surface are convex surface and are at least simultaneously aspherical.It in concave surface and its image side optical surface and thing side optical surface is at least simultaneously aspherical that the image side optical surface of second lens, which is,.The image side optical surface and thing side optical surface of 3rd lens are all aspherical and are all provided with the point of inflexion.The thing side optical surface of 4th lens is concave surface and image side optical surface is convex surface.The thing side optical surface of 5th lens is concave surface and image side optical surface is convex surface, the image side optical surface and thing side optical surface of 5th lens are all aspherical, the thing side optical surface of 5th lens is provided with least one point of inflexion and its image side optical surface is provided with least two points of inflexion, the second lens to the 5th lens tool refractive power.
Description
Technical field
The present invention relates to a kind of optical imaging lens group, more particularly to a kind of five chip light for being suitably applied electronic product
Study as lens group.
Background technology
Recent years, with the rise of the electronic product with capture function, minimize the demand of phtographic lens increasingly
Improve, and the photosensory assembly of general phtographic lens nothing more than be photosensitive coupling component (Charge Coupled Device) or
Two kinds of Complimentary Metal-Oxide semiconductor subassembly (CMOS sensor), and progressing greatly with semiconductor processing technology so that photosensitive
The Pixel Dimensions of component reduce, and miniaturization phtographic lens gradually develops toward high pixel neighborhoods, therefore, to feeling as the requirement of quality
Increasingly increase.
Various miniaturizations five lens type fixed focal lengths optics microscope group design in, prior art be with it is different just
Or the lens combination of negative refractive power, for example, using the 4th lens of negative refractive power and the 5th lens configuration of negative refractive power, can increase
Add the back focal length and total length of optical image capture, but the more difficult shortening of total length for easily causing optical system.
The content of the invention
Therefore, the purpose of the embodiment of the present invention is, there is provided a kind of technology, can effectively shorten the total length of optics microscope group
And efficient combination multiple lens are with the further quality for improving imaging.
According to object of the invention it is proposed a kind of five chip optical imaging lens groups, along optical axis by thing side to image side according to
Sequence includes：First lens, have positive refractive power, and the first lens are convex in the image side optical surface at optical axis and thing side optical surface
At least one side is aspherical in the image side optical surface and thing side optical surface of face and the first lens.Second lens, there is refractive power,
Second lens in the image side optical surface at the optical axis is the image side optical surface and thing side optical surface of concave surface and the second lens extremely
Rare one side is aspherical.3rd lens, there is refractive power, the image side optical surface and thing side optical surface of the 3rd lens are all aspheric
The point of inflexion is all provided with the image side optical surface and thing side optical surface of face and the 3rd lens.4th lens, there is refractive power, the 4th is saturating
Mirror is that the image side optical surface of concave surface and the 4th lens at close optical axis is convex surface in the thing side optical surface at optical axis.5th
Lens, there is refractive power, thing side optical surface of the 5th lens at close optical axis is concave surface and the 5th lens are close to optical axis side
Image side optical surface be convex surface, the image side optical surface and thing side optical surface of the 5th lens are all aspherical, the thing side of the 5th lens
Optical surface is provided with least one point of inflexion and the image side optical surface of the 5th lens is provided with least two points of inflexion.Wherein first
The focal length of lens to the 5th lens is respectively f1, f2, f3, f4 and f5, and the focal lengths of five chip optical imaging lens groups is f, and the 4th
The distance of the image side optical surface of lens and the thing side optical surface of the 5th lens on optical axis is T45, meets following condition：1.3≦|
F/f1 |≤2.0,0.13<T45/f<0.23.
Preferably, thing side optical surface of the 3rd lens at close optical axis is convex surface and the 3rd lens are at optical axis
Image side optical surface be concave surface.
Preferably, on the thing side optical surface of the 3rd lens, centered on optical axis and less than in the range of Entry pupil diameters EPD
Aspherical height rise and fall and be less than 0.2mm.
Preferably, on the thing side optical surface of the 3rd lens, near the point of inflexion of optical axis and the vertical range of optical axis
For HI, meet following relationship：0mm≤HI≤0.5mm.
Preferably, point of inflexion upright projection is reference point in the position of optical axis, the thing sidelight of reference point to the 3rd lens
The horizontal displacement distance of the intersection point of face and optical axis is DR, meets following relationship：0mm≤DR≤0.15mm.
Preferably, the effective path position of the maximum of intersection point to the thing side optical surface of the 3rd lens is in the horizontal displacement on optical axis
Distance is Sag31, and the 3rd lens are CT3 in the thickness on optical axis, meet following relationship：0≤|Sag31|/CT3≤0.2.
Preferably, distance of the thing side optical surface of the image side optical surface of the first lens and the second lens on optical axis is
T12, meet following relationship：0≤T12/f≤0.1.
Preferably, the distance of the first lens and the second lens on optical axis is T12, and the first lens are in the thickness on optical axis
For CT1, the second lens are CT2 in the thickness on optical axis, meet following relationship：0.3≤(CT2+T12)/CT1≤0.7.
Preferably, the thing side optical surface of the second lens is provided with least one point of inflexion.
According to the purpose of the present invention, it is also proposed that a kind of five chip optical imaging lens groups, along an optical axis by thing side to picture
Side sequentially includes：First lens, have positive refractive power, and the first lens are convex surface and first in the thing side optical surface at optical axis
At least one side is aspherical in the image side optical surface and thing side optical surface of lens.Second lens, there are refractive power, the second lens
In the image side optical surface at optical axis is the image side optical surface and thing side optical surface of concave surface and the second lens at least simultaneously
To be aspherical.3rd lens, have a refractive power, and the image side optical surface and thing side optical surface of the 3rd lens are all aspherical and the 3rd
The point of inflexion is all provided with the image side optical surface and thing side optical surface of lens.4th lens, there is refractive power, the 4th lens are close
Thing side optical surface at optical axis is that the image side optical surface of concave surface and the 4th lens at close optical axis is convex surface.5th lens, tool
There is refractive power, the image side optical surface and thing side optical surface of the 5th lens are all aspherical, are set on the thing side optical surface of the 5th lens
There is the image side optical surface of at least one point of inflexion and the 5th lens to be provided with least two points of inflexion.First lens to the 5th lens
Focal length be respectively f1, f2, f3, f4 and f5, the focal lengths of five chip optical imaging lens groups is f, the image side optics of the 4th lens
Distance of the thing side optical surface of face and the 5th lens on optical axis is T45, meets following condition：1.3 ≦ ∣ f/f1 │≤2.0,
0.13<T45/f<0.23。
Preferably, there is one and tangent critical in the section perpendicular to optical axis on the image side optical surface of the 3rd lens
Point.
Preferably, on the thing side optical surface of the 3rd lens, centered on optical axis and less than in the range of Entry pupil diameters EPD
Aspherical height rise and fall and be less than 0.2mm.
Preferably, on the thing side optical surface of the 3rd lens, near optical axis a point of inflexion to optical axis it is vertical away from
From for HI, meet following relationship：0mm≤HI≤0.5mm.
Preferably, point of inflexion upright projection is a reference point in the position of optical axis, reference point to the thing side of the 3rd lens
The horizontal displacement distance of one intersection point of optical surface and optical axis is DR, meets following relationship：0mm≤DR≤0.15mm.
Preferably, the effective path position of the maximum of intersection point to the thing side optical surface of the 3rd lens is in the horizontal displacement on optical axis
Distance is Sag31, and the 3rd lens are CT3 in the thickness on optical axis, meet following relationship：0≤|Sag31|/CT3≤0.2.
Preferably, the f-number of five chip optical imaging lens groups is F, meets following relationship：1.5≤F≤2.9.
Preferably, there is one and tangent critical in the section perpendicular to optical axis on the image side optical surface of the 5th lens
Point, the vertical range of critical point to optical axis is DC, Entry pupil diameters EPD, meets following relationship：0.5≤DC/EPD≤1.
According to the purpose of the present invention, it is also proposed that a kind of five chip optical imaging lens groups, along optical axis by thing side to image side
Sequentially include：First lens, there is positive refractive power, the first lens are convex surface in the thing side optical surface at optical axis and first is saturating
At least one side is aspherical in the image side optical surface and thing side optical surface of mirror.Second lens, have refractive power, and the second lens exist
Image side optical surface at optical axis is at least to be simultaneously in the image side optical surface and thing side optical surface of concave surface and the second lens
It is aspherical.3rd lens, have a refractive power, the image side optical surface of the 3rd lens and thing side optical surface is all aspherical and the 3rd is saturating
The point of inflexion is all provided with the image side optical surface and thing side optical surface of mirror.4th lens, there is refractive power, the 4th lens are close to light
Thing side optical surface at axle is that the image side optical surface of concave surface and the 4th lens at close optical axis is convex surface.5th lens, have
Refractive power, the image side optical surface and thing side optical surface of the 5th lens are all aspherical, and the thing side optical surface of the 5th lens is provided with
The image side optical surface of at least one point of inflexion and the 5th lens is provided with least two points of inflexion.Wherein the first lens are to the 5th saturating
The focal length of mirror is respectively f1, f2, f3, f4 and f5, and the focal lengths of five chip optical imaging lens groups is f, the thing sidelight of the first lens
Distance of the face to an imaging surface on optical axis is OT, is to meet following condition：1.3 ≦ ∣ f/f1 │≤2.0, OT<3.5mm.
Preferably, on the thing side optical surface of the 3rd lens, centered on optical axis and less than in the range of Entry pupil diameters EPD
Aspherical height rise and fall and be less than 0.2mm.
Preferably, a point of inflexion to the vertical range of optical axis on the thing side optical surface of the 3rd lens near optical axis is
HI, meet following relationship：0mm≤HI≤0.5mm.
According to above-mentioned technical proposal, five chip optical imaging lens groups of the embodiment of the present invention, five lens can be utilized
Refractive power, the point of inflexion, convex surface and the combination of concave surface, effectively to shorten the total length of optical image capture lens head and improve imaging
Quality.
Brief description of the drawings
The above and other feature and advantage of the present invention will become according to its exemplary embodiments is explained in detail with reference to the accompanying drawings
Obtain more aobvious and be apparent from, wherein：
Figure 1A is the schematic diagram according to five chip optical imaging lens groups of the first embodiment of the present invention.
Figure 1B is the curve map of the astigmatism and distortion aberration according to the first embodiment of the present invention.
Fig. 1 C are the curve map according to the spherical aberration of the first embodiment of the present invention.
Fig. 2A is the schematic diagram according to five chip optical imaging lens groups of the second embodiment of the present invention.
Fig. 2 B are the curve map of the astigmatism and distortion aberration according to the second embodiment of the present invention.
Fig. 2 C are the curve map according to the spherical aberration of the second embodiment of the present invention.
Fig. 3 A are the schematic diagram according to five chip optical imaging lens groups of the third embodiment of the present invention.
Fig. 3 B are the curve map of the astigmatism and distortion aberration according to the third embodiment of the present invention.
Fig. 3 C are the curve map according to the spherical aberration of the third embodiment of the present invention.
Fig. 4 A are the schematic diagram according to five chip optical imaging lens groups of the fourth embodiment of the present invention.
Fig. 4 B are the curve map of the astigmatism and distortion aberration according to the fourth embodiment of the present invention.
Fig. 4 C are the curve map according to the spherical aberration of the fourth embodiment of the present invention.
Description of reference numerals
112nd, the thing side optical surface of 212,312,412 first lens
114th, the image side optical surface of 214,314,414 first lens
122nd, the thing side optical surface of 222,322,422 second lens
124th, the image side optical surface of 224,324,424 second lens
132nd, the thing side optical surface of 232,332,432 the 3rd lens
134th, the image side optical surface of 234,334,434 the 3rd lens
142nd, the thing side optical surface of 242,342,442 the 4th lens
144th, the image side optical surface of 244,344,444 the 4th lens
152nd, the thing side optical surface of 252,352,452 the 5th lens
154th, the image side optical surface of 254,354,454 the 5th lens
100th, 200,300,400 fixed aperture
160th, 260,360,460 infrared rays filter out optical filter
180th, 280,380,480 imaging surface
190th, 290,390,490 image sensing component
110th, 210,310,410 first lens
120th, 220,320,420 second lens
130th, 230,330,430 the 3rd lens
140th, 240,340,440 the 4th lens
150th, 250,350,450 the 5th lens
Embodiment
Used in this, vocabulary " and/or " any or all combination comprising one or more related bar list of items.When " at least
The narration prefix of one " is the whole manifest component of modification and the individual elements in non-modified inventory when before a bill of component.
Figure 1A is referred to, it shows the schematic diagram of five chip optical imaging lens groups of the first embodiment of the present invention.Such as
Shown in Figure 1A, the present invention includes optical image capture lens head, and it is sequentially included along optical axis by thing side to image side：First lens
110th, the second lens 120, the 3rd lens 130, the 4th lens 140 and the 5th lens 150.
First lens 110 have a positive refractive power, and this first lens 110 in the thing side optical surface 112 at optical axis and
Image side optical surface 114 is convex surface, and at least one side can be aspherical in this thing side optical surface 112 and image side optical surface 114.
Second lens 120 have a refractive power, and the second lens 120 are concave surface in the image side optical surface 124 at optical axis, and the second lens
Thing side optical surface 122 and image side optical surface 124 at least one side can be aspherical.3rd lens 130 have refractive power, the
Three lens 130 are in image side optics of the thing side optical surface 132 at optical axis for convex surface and the 3rd lens 130 at close optical axis
Face 134 is concave surface, and the thing side optical surface 132 and image side optical surface 134 of the 3rd lens are all aspherical and it is all provided with the point of inflexion.
4th lens 140 have refractive power, the thing side optical surface 142 at the optical axis and image side optical surface 144 be respectively concave surface and
Convex surface.5th lens 150 have refractive power, and the 5th lens 150 are concave surface and its picture in the thing side optical surface 152 at optical axis
Side optical surface 154 is convex surface, and the wherein thing side optical surface 152 of this 5th lens and image side optical surface 154 is all aspherical 5th
Image side optical surface 154 of the thing side optical surface 152 with least one point of inflexion and this 5th lens of lens is with least two
The point of inflexion.
The shape beyond sphere can be fabricated to using aspherical optical surface in the present invention, to obtain more control variable
And to cut down aberration, and then the compactedness between more preferable resolving power and lens is provided and effectively reduces the total length of camera lens.
The five chip optical imaging lens groups of the present invention can more include fixed aperture 100 and filter out optical filter 160 with infrared ray,
Fixed aperture 100 is arranged between the first lens 110 and object.Infrared ray filters out optical filter 160 and is then arranged at the 5th lens
Between 150 and imaging surface 180, it is usually made by planar opticses material that this infrared ray, which filters out optical filter 160, does not influence the present invention
The focal length of optics microscope group.
The five chip optical imaging lens groups of the present invention can more include electronics photosensory assembly 190, and it is arranged at imaging surface 180
On, object can be imaged.The lens 150 of first lens 110 to the 5th can include plastic material or glass material.The present invention's is non-
The equation of sphere is：Z=ch2/[1+[1-(k+1)c2h2]0.5]+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16+Hh18+Jh20
+…(1)
Wherein, it along optical axis direction is highly being that the positional value that refers to is made in h position with surface vertices that z, which is, and k is cone normal manner
Amount, c is the inverse of radius of curvature, and A, B, C, D, E, F, G, H and J are order aspherical coefficients.
First embodiment optical data as shown in Table 1, wherein the thing sidelight of the lens 150 of the first lens 110 to the 5th
Face uses the aspherical equation formula of (1) to be formed with image side optical surface, and its asphericity coefficient is as shown in Table 2 and it is referred to
Wavelength is d-line 587nm.Wherein, the focal length f1 of the first lens 110 is 2.234mm, Jiao of five chip optical imaging lens groups
It is 3.535mm away from f, the distance of the thing side optical surfaces 152 of the lens of image side optical surface 144 and the 5th of the 4th lens on optical axis
T45 is 0.633mm, and the f-number of five chip optical imaging lens groups is 2.034, and Entry pupil diameters EPD is 1.738mm, and first is saturating
Distance OT of the thing side optical surface 112 of mirror to imaging surface 180 on optical axis is 4.44mm.First lens 110 and the second lens 120
Distance T12 on optical axis is 0.0678mm.Thickness of first lens 110 on optical axis is 0.681mm, and the second lens 120 exist
Thickness on optical axis is 0.235mm, and the 3rd lens 130 are 0.44mm in the thickness CT3 on optical axis, in the thing sidelight of the 3rd lens
On face 132, rise and fall centered on optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than 0.2mm.
On the thing side optical surface 132 of the 3rd lens, the point of inflexion near optical axis is away from HI to the vertical of optical axis
0.281mm, and this point of inflexion upright projection is reference point in the position of optical axis, the thing side optical surface of this reference point to the 3rd lens
132 and the horizontal displacement distance DR of the intersection point of optical axis are 0.0072mm, and the thing side optical surface 132 of this intersection point to the 3rd lens is most
Big effectively path position is -0.0220mm in the horizontal displacement distance Sag31 on optical axis, on the image side optical surface 154 of the 5th lens
With a critical point tangent with the section perpendicular to optical axis, the vertical range DC of this critical point to optical axis is 1.196mm.
Can be learnt more than | f/f1 |=1.582 meet 1.3<=| f/f1 |<=2.0, T45/f=0.179 meet 0.13<
T45/f<0.23, | Sag31 |/CT3=0.0500 meets 0<=| Sag31 |/CT3<=0.2, T12/f=0.0192 meet 0<=
T12/f<=0.1, (CT2+T12)/CT1=0.445 meet 0.3<=(CT2+T12)/CT1<=0.7, DC/EPD=0.688 are full
Foot 0.5<=DC/EPD<=1, HI=0.281mm meet 0mm<=HI<=0.5mm.
Table one：The basic lens data of first embodiment.
Table two：The asphericity coefficient of first embodiment.
| First face | Second face | 3rd face | Fourth face | 5th face | |
| k | 1.948 | 2.156 | 4.879 | -0.088 | -2.724 |
| A | -0.092 | 0.217 | 0.337 | 0.089 | -0.273 |
| B | 0.242 | -0.292 | -0.409 | -0.423 | 0.377 |
| C | -2.239 | -0.567 | -0.296 | 1.639 | -1.513 |
| D | 8.486 | 4.024 | 3.991 | -3.129 | 3.569 |
| E | -17.653 | -9.848 | -10.943 | 3.273 | -4.157 |
| F | 18.391 | 10.567 | 12.438 | -1.744 | 2.612 |
| G | -7.783 | -4.153 | -5.058 | 0.369 | -0.756 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
| 6th face | 7th face | Octahedral | 9th face | Tenth face | |
| k | -3.722 | -69.802 | -0.632 | -2.959 | 11.671 |
| A | -0.134 | -0.309 | 0.155 | 0.213 | 0.177 |
| B | 0.304 | 0.962 | -0.034 | -0.216 | -0.160 |
| C | -0.900 | -1.323 | 0.246 | 0.090 | 0.077 |
| D | 1.479 | 1.028 | -0.261 | -0.015 | -0.024 |
| E | -1.380 | -0.488 | 0.121 | 9.725*10^-4 | 4.441*10^-3 |
| F | 0.737 | 0.137 | -0.027 | 6.681*10^-4 | 0 |
| G | -0.171 | -0.020 | 2.587*10^-3 | 0 | 0 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
Basic lens data from table one and the aberration curve figure by Figure 1B, 1C, according to the five chip light of the present invention
The present embodiment as lens group is studied, has good compensation effect in astigmatism, distortion aberration and spherical aberration.
Fig. 2A is referred to, it is the schematic diagram for the five chip optical imaging lens groups for showing the second embodiment of the present invention.
As shown in Figure 2 A, the present invention includes optical image capture lens head, and it is sequentially included along optical axis by thing side to image side：First lens
210th, the second lens 220, the 3rd lens 230, the 4th lens 240 and the 5th lens 250.Wherein the first lens 210 to the 5th
The thing side optical surface of lens 250 is formed with image side optical surface using the aspherical equation formula of formula (1), and its asphericity coefficient is such as
Shown in table four and its reference wavelength is d-line 587nm, and lens structure in a second embodiment is similar in first embodiment
Lens structure, therefore herein without repeating.
In a second embodiment, wherein the focal length f1 of the first lens 210 is 1.718mm, five chip optical imaging lens groups
Focal length f be 2.854mm, the thing side optical surfaces 252 of the lens of image side optical surface 244 and the 5th of the 4th lens on optical axis away from
It is 0.494mm from T45, the f-number of five chip optical imaging lens groups is 2.344, and Entry pupil diameters EPD is 1.217mm, first
Distance OT of the thing side optical surface 212 of lens to imaging surface 280 on optical axis is 3.40mm.First lens 210 and the second lens
The 220 distance T12 on optical axis is 0.0514mm.Thickness of first lens 210 on optical axis is 0.443mm, the second lens 220
Thickness on optical axis is 0.215mm, and the 3rd lens 230 are 0.228mm in the thickness CT3 on optical axis, in the thing of the 3rd lens
On side optical surface 232, rise and fall centered on optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than
0.2mm。
On the thing side optical surface 232 of the 3rd lens, the point of inflexion near optical axis is away from HI to the vertical of optical axis
0.265mm, and this point of inflexion upright projection is reference point in the position of optical axis, the thing side optical surface of this reference point to the 3rd lens
232 and the horizontal displacement distance DR of the intersection point of optical axis are 0.0114mm, and the thing side optical surface 232 of this intersection point to the 3rd lens is most
Big effectively path position is 0.0283mm in the horizontal displacement distance Sag31 on optical axis, is had on the image side optical surface 254 of the 5th lens
There is a critical point tangent with the section perpendicular to optical axis, the vertical range DC of this critical point to optical axis is 0.874mm.
Can be learnt more than | f/f1 |=1.661 meet 1.3<=| f/f1 |<=2.0, T45/f=0.173 meet 0.13<
T45/f<0.23, therefore | Sag31 |/CT3=0.124 meets 0<=| Sag31 |/CT3<=0.2, T12/f=0.0180 meet 0<
=T12/f<=0.1, (CT2+T12)/CT1=0.600 meet 0.3<=(CT2+T12)/CT1<=0.7, DC/EPD=0.718
Meet 0.5<=DC/EPD<=1, OT=3.40mm meet OT<3.5mm, HI=0.265mm meet 0mm<=HI<=0.5mm.
Table three：The basic lens data of second embodiment.
Table four：The asphericity coefficient of second embodiment.
| First face | Second face | 3rd face | Fourth face | 5th face | |
| k | 1.989 | 6.436 | 8.639 | 1.689 | -4.341 |
| A | -0.188 | 0.463 | 0.714 | 0.201 | -0.554 |
| B | 0.724 | -1.069 | -1.540 | -1.297 | 1.270 |
| C | -12.400 | -3.599 | -1.956 | 8.596 | -8.011 |
| D | 74.596 | 35.427 | 35.174 | -28.202 | 31.931 |
| E | -251.748 | -138.527 | -155.818 | 47.410 | -60.873 |
| F | 432.224 | 244.741 | 295.376 | -37.868 | 60.046 |
| G | -313.523 | -161.300 | -199.699 | 12.045 | -26.223 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
| 6th face | 7th face | Octahedral | 9th face | Tenth face | |
| k | -6.801 | -70.653 | -0.615 | -2.939 | 1.520 |
| A | -0.324 | -0.657 | 0.358 | 0.490 | 0.362 |
| B | 0.959 | 3.217 | -0.088 | -0.754 | -0.536 |
| C | -4.865 | -7.212 | 1.335 | 0.500 | 0.415 |
| D | 13.357 | 9.122 | -2.321 | -0.125 | -0.207 |
| E | -19.388 | -6.989 | 1.722 | -0.018 | 0.064 |
| F | 17.561 | 3.153 | -0.621 | 0.015 | -0.011 |
| G | -7.836 | -0.750 | 0.096 | -2.25*10^-3 | 8.39*10^-4 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
From the basic lens data of table three and by Fig. 2 B, 2C aberration curve figure, according to the five chip light of the present invention
The present embodiment as lens group is studied, has good compensation effect in astigmatism, distortion aberration and spherical aberration.
Fig. 3 A are referred to, it is the schematic diagram for the five chip optical imaging lens groups for showing the third embodiment of the present invention.
As shown in Figure 3A, the present invention includes optical image capture lens head, and it is sequentially included along optical axis by thing side to image side：First lens
310th, the second lens 320, the 3rd lens 330, the 4th lens 340 and the 5th lens 350.Wherein the first lens 310 to the 5th
The thing side optical surface of lens 350 is formed with image side optical surface using the aspherical equation formula of formula (1), and its asphericity coefficient is such as
Shown in table six and its reference wavelength is d-line 587nm, the mirror of lens structure approximation first embodiment in the third embodiment
Chip architecture, therefore herein without repeating.
In the third embodiment, wherein the focal length f1 of the first lens 310 is 2.018mm, five chip optical imaging lens groups
Focal length f be 3.405mm, the thing side optical surfaces 352 of the lens of image side optical surface 344 and the 5th of the 4th lens on optical axis away from
It is 0.558mm from T45, the f-number of five chip optical imaging lens groups is 2.4, and Entry pupil diameters EPD is 1.419mm, and first is saturating
Distance OT of the thing side optical surface 312 of mirror to imaging surface 380 on optical axis is 4.02mm.First lens 310 and the second lens 320
Distance T12 on optical axis is 0.051mm.Thickness of first lens 310 on optical axis is 0.521mm, and the second lens 320 are in light
Thickness on axle is 0.258mm, and the 3rd lens 330 are 0.227mm in the thickness CT3 on optical axis, in the thing sidelight of the 3rd lens
On face 332, rise and fall centered on optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than 0.2mm.
On the thing side optical surface 332 of the 3rd lens, the point of inflexion near optical axis is away from HI to the vertical of optical axis
0.300mm, and this point of inflexion upright projection is reference point in the position of optical axis, the thing side optical surface of this reference point to the 3rd lens
332 and the horizontal displacement distance DR of the intersection point of optical axis are 0.0130mm, and the thing side optical surface 332 of this intersection point to the 3rd lens is most
Big effectively path position is 0.0304mm in the horizontal displacement distance Sag31 on optical axis, is had on the image side optical surface 354 of the 5th lens
There is a critical point tangent with the section perpendicular to optical axis, the vertical range DC of this critical point to optical axis is 1.116mm.
Can be learnt more than | f/f1 |=1.687 meet 1.3<=| f/f1 |<=2.0, T45/f=0.164 meet 0.13<
T45/f<0.23, | Sag31 |/CT3=0.134 meets 0<=| Sag31 |/CT3<=0.2, T12/f=0.0150 meet 0<=
T12/f<=0.1, (CT2+T12)/CT1=0.593 meet 0.3<=(CT2+T12)/CT1<=0.7, DC/EPD=0.786 are full
Foot 0.5<=DC/EPD<=1, HI=0.300mm meet 0mm<=HI<=0.5mm.
Table five：The basic lens data of 3rd embodiment
Table six：The asphericity coefficient of 3rd embodiment
| First face | Second face | 3rd face | Fourth face | 5th face | |
| k | 1.939 | 2.863 | 5.864 | 3.621 | -12.272 |
| A | -0.122 | 0.266 | 0.416 | 0.135 | -0.330 |
| B | 0.338 | -0.360 | -0.578 | -0.537 | 0.501 |
| C | -3.530 | -1.197 | -0.699 | 2.354 | -2.219 |
| D | 14.262 | 6.568 | 6.640 | -5.357 | 6.234 |
| E | -33.804 | -18.062 | -20.474 | 6.566 | -8.151 |
| F | 41.396 | 24.646 | 29.461 | -3.849 | 5.517 |
| G | -21.823 | -12.939 | -15.552 | 0.954 | -1.679 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
| 6th face | 7th face | Octahedral | 9th face | Tenth face | |
| k | -15.888 | -73.201 | -0.608 | -3.124 | -3.977 |
| A | -0.213 | -0.410 | 0.227 | 0.280 | 0.195 |
| B | 0.353 | 1.300 | -0.029 | -0.300 | -0.208 |
| C | -1.311 | -1.997 | 0.367 | 0.140 | 0.114 |
| D | 2.637 | 1.776 | -0.453 | -0.024 | -0.040 |
| E | -2.594 | -0.947 | 0.232 | -2.443*10^-3 | 8.637*10^-3 |
| F | 1.613 | 0.273 | -0.057 | 1.425*10^-3 | -1.047*10^-3 |
| G | -0.533 | -0.039 | 6.263*10^-3 | 0 | 0 |
| H | 0 | 0 | 0 | 0 | 0 |
| J | 0 | 0 | 0 | 0 | 0 |
From the basic lens data of table five and by Fig. 3 B, 3C aberration curve figure, according to the five chip light of the present invention
The present embodiment as lens group is studied, has good compensation effect in astigmatism, distortion aberration and spherical aberration.
Fig. 4 A are referred to, it is the schematic diagram for the five chip optical imaging lens groups for showing the fourth embodiment of the present invention.
As shown in Figure 4 A, the present invention includes optical image capture lens head, and it is sequentially included along optical axis by thing side to image side：First lens
410th, the second lens 420, the 3rd lens 430, the 4th lens 440 and the 5th lens 450.Wherein the first lens 410 to the 5th
The thing side optical surface of lens 450 is formed with image side optical surface using the aspherical equation formula of formula (1), and its asphericity coefficient is such as
Shown in table eight and its reference wavelength is d-line 587nm, the mirror of lens structure approximation first embodiment in the third embodiment
Chip architecture, therefore herein without repeating.
In the fourth embodiment, wherein the focal length f1 of the first lens 410 is 2.173mm, five chip optical imaging lens groups
Focal length f be 3.405mm, the thing side optical surfaces 452 of the lens of image side optical surface 444 and the 5th of the 4th lens on optical axis away from
It is 0.650mm from T45, the f-number of five chip optical imaging lens groups is 2.4, and Entry pupil diameters EPD is 1.419mm, and first is saturating
Distance OT of the thing side optical surface 412 of mirror to imaging surface on optical axis is 4.38mm.First lens 410 and the second lens 420 exist
Distance T12 on optical axis is 0.0609mm.Thickness of first lens 410 on optical axis is 0.620mm, and the second lens 420 are in light
Thickness on axle is 0.214mm, and the 3rd lens 430 are 0.362mm in the thickness CT3 on optical axis, in the thing sidelight of the 3rd lens
On face 432, rise and fall centered on optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than 0.2mm.
On the thing side optical surface 432 of the 3rd lens, the point of inflexion near optical axis is away from HI to the vertical of optical axis
0.31mm, and this point of inflexion upright projection is reference point in the position of optical axis, the thing side optical surface of this reference point to the 3rd lens
432 and the horizontal displacement distance DR of the intersection point of optical axis are 0.0105mm, and the thing side optical surface 432 of this intersection point to the 3rd lens is most
Big effectively path position is -0.00487mm in the horizontal displacement distance Sag31 on optical axis, on the image side optical surface 454 of the 5th lens
With a critical point tangent with the section perpendicular to optical axis, the vertical range DC of this critical point to optical axis is 1.048mm.
Can be learnt more than | f/f1 |=1.567 meet 1.3<=| f/f1 |<=2.0, T45/f=0.191 meet 0.13<
T45/f<0.23, | Sag31 |/CT3=0.0135 meets 0<=| Sag31 |/CT3<=0.2, T12/f=0.0179 meet 0<=
T12/f<=0.1, (CT2+T12)/CT1=0.443 meet 0.3<=(CT2+T12)/CT1<=0.7, DC/EPD=0.738 are
Meet 0.5<=DC/EPD<=1, HI=0.31mm meet 0mm<=HI<=0.5mm.
Table seven：The basic lens data of fourth embodiment
Table eight：The asphericity coefficient of fourth embodiment
From the basic lens data of table seven and by Fig. 4 B, 4C aberration curve figure, according to the five chip light of the present invention
The present embodiment as lens group is studied, has good compensation effect in astigmatism, distortion aberration and spherical aberration.
To be those skilled in the art institute although the present invention is particularly shown with reference to its exemplary embodiments and describes
Understand, in not departing to enter it under spirit and scope of the invention defined in the application the scope of the claims and its equivalent
Row form and the various changes in details.
Claims (18)
1. a kind of five chip optical imaging lens groups, it is characterised in that sequentially included by thing side to image side along optical axis：
First lens, there is positive refractive power, first lens are in the image side optical surface and thing sidelight at the optical axis
It in the image side optical surface and thing side optical surface on convex surface and first lens is at least simultaneously aspherical that face, which is,；
Second lens, have negative refractive power, and second lens are concave surface and institute in the image side optical surface at the optical axis
State in the image side optical surface and thing side optical surface of the second lens at least simultaneously to be aspherical；
3rd lens, have a positive refractive power, the image side optical surface of the 3rd lens and thing side optical surface is all aspherical and institute
State and the point of inflexion is all provided with the image side optical surface and thing side optical surface of the 3rd lens；
4th lens, have positive refractive power, and the 4th lens are concave surface and institute in the thing side optical surface at the optical axis
It is convex surface that the 4th lens, which are stated, in the image side optical surface at the optical axis；And
5th lens, have negative refractive power, and the 5th lens are concave surface and institute in the thing side optical surface at the optical axis
It is convex surface that the 5th lens, which are stated, in the image side optical surface close to the optical axis side, the image side optical surface and thing sidelight of the 5th lens
Face is all aspherical, and the thing side optical surface of the 5th lens is provided with the picture of at least one point of inflexion and the 5th lens
Side optical surface is provided with least two points of inflexion；
The focal length of wherein described first lens to the 5th lens is respectively f1, f2, f3, f4 and f5, the five chips optics
The focal length of imaging lens group is f, and the image side optical surface of the 4th lens is with the thing side optical surface of the 5th lens described
Distance on optical axis is T45, on the thing side optical surface of the 3rd lens, near the point of inflexion and the light of the optical axis
The vertical range of axle is HI, meets following condition：
1.3≤| f/f1 |≤2.0,
0.13<T45/f<0.23,
0mm≤HI≤0.5mm。
2. five chips optical imaging lens group as claimed in claim 1, it is characterised in that the 3rd lens are close to described
Thing side optical surface at optical axis is that the image side optical surface of convex surface and the 3rd lens at the close optical axis is concave surface.
3. five chips optical imaging lens group as claimed in claim 2, it is characterised in that in the thing sidelight of the 3rd lens
On face, rise and fall centered on the optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than 0.2mm.
4. five chips optical imaging lens group as claimed in claim 1, it is characterised in that the point of inflexion upright projection is in institute
The position for stating optical axis is the water of reference point, the thing side optical surface of the reference point to the 3rd lens and the intersection point of the optical axis
Flat shift length is DR, meets following relationship：
0mm≤DR≤0.15mm。
5. five chips optical imaging lens group as claimed in claim 4, it is characterised in that the intersection point to the 3rd lens
The maximum effectively path position of thing side optical surface in the horizontal displacement distance on the optical axis be Sag31, the 3rd lens in
Thickness on the optical axis is CT3, meets following relationship：
0≤|Sag31|/CT3≤0.2。
6. five chips optical imaging lens group as claimed in claim 1, it is characterised in that the image side optics of first lens
Distance of the thing side optical surface of face and second lens on the optical axis is T12, meets following relationship：
0≤T12/f≤0.1。
7. five chips optical imaging lens group as claimed in claim 1, it is characterised in that first lens and described second
Distance of the lens on the optical axis is T12, and first lens are CT1 in the thickness on the optical axis, second lens
It is CT2 in the thickness on the optical axis, meets following relationship：
0.3≤(CT2+T12)/CT1≤0.7。
8. five chips optical imaging lens group as claimed in claim 1, it is characterised in that the thing sidelight of second lens
Face is provided with least one point of inflexion.
9. a kind of five chip optical imaging lens groups, it is characterised in that sequentially included by thing side to image side along optical axis：
First lens, have positive refractive power, and first lens are convex surface and institute in the thing side optical surface at the optical axis
State in the image side optical surface and thing side optical surface of the first lens at least simultaneously to be aspherical；
Second lens, have negative refractive power, and second lens are concave surface and institute in the image side optical surface at the optical axis
State in the image side optical surface and thing side optical surface of the second lens at least simultaneously to be aspherical；
3rd lens, have a positive refractive power, the image side optical surface of the 3rd lens and thing side optical surface is all aspherical and institute
State and the point of inflexion is all provided with the image side optical surface and thing side optical surface of the 3rd lens；
4th lens, have positive refractive power, and the 4th lens are concave surface and institute in the thing side optical surface at the optical axis
It is convex surface that the 4th lens, which are stated, in the image side optical surface at the optical axis；And
5th lens, have a negative refractive power, the image side optical surface and thing side optical surface of the 5th lens be all it is aspherical, it is described
The thing side optical surface of 5th lens is provided with least one point of inflexion and the image side optical surface of the 5th lens is provided with least
Two points of inflexion；
The focal length of wherein described first lens to the 5th lens is respectively f1, f2, f3, f4 and f5, the five chips optics
The focal length of imaging lens group is f, and the image side optical surface of the 4th lens is with the thing side optical surface of the 5th lens in optical axis
On distance be T45, on the thing side optical surface of the 3rd lens, the point of inflexion near the optical axis is to the optical axis
Vertical range is HI, meets following condition：
1.3 ≦ ∣ f/f1 │≤2.0,
0.13<T45/f<0.23,
0mm≤HI≤0.5mm。
10. five chips optical imaging lens group as claimed in claim 9, it is characterised in that the image side light of the 3rd lens
There is a critical point tangent with the section perpendicular to optical axis on face.
11. five chips optical imaging lens group as claimed in claim 9, it is characterised in that in the thing side of the 3rd lens
On optical surface, rise and fall centered on the optical axis and less than the aspherical height in the range of Entry pupil diameters EPD and be less than
0.2mm。
12. five chips optical imaging lens group as claimed in claim 9, it is characterised in that the point of inflexion upright projection in
The position of the optical axis is reference point, the thing side optical surface of the reference point to the 3rd lens and the intersection point of the optical axis
Horizontal displacement distance is DR, meets following relationship：
0mm≤DR≤0.15mm。
13. five chips optical imaging lens group as claimed in claim 12, it is characterised in that the intersection point is to the described 3rd saturating
The maximum of the thing side optical surface of mirror effectively path position is Sag31 in the horizontal displacement distance on the optical axis, the 3rd lens
It is CT3 in the thickness on the optical axis, meets following relationship：
0≤|Sag31|/CT3≤0.2。
14. five chips optical imaging lens group as claimed in claim 9, it is characterised in that the five chips optical imaging lens
The f-number of head group is F, meets following relationship：
1.5≤F≤2.9。
15. five chips optical imaging lens group as claimed in claim 9, it is characterised in that the image side light of the 5th lens
There is a critical point tangent with the section perpendicular to optical axis, the critical point to the vertical range of the optical axis is on face
DC, Entry pupil diameters EPD, meets following relationship：
0.5≤DC/EPD≤1。
16. a kind of five chip optical imaging lens groups, it is characterised in that sequentially included by thing side to image side along optical axis：
First lens, have positive refractive power, and first lens are convex surface and institute in the thing side optical surface at the optical axis
State in the image side optical surface and thing side optical surface of the first lens at least simultaneously to be aspherical；
Second lens, have negative refractive power, and second lens are concave surface and institute in the image side optical surface at the optical axis
State in the image side optical surface and thing side optical surface of the second lens at least simultaneously to be aspherical；
3rd lens, have a positive refractive power, the image side optical surface of the 3rd lens and thing side optical surface is all aspherical and institute
State and the point of inflexion is all provided with the image side optical surface and thing side optical surface of the 3rd lens；
4th lens, have positive refractive power, and the 4th lens are concave surface and institute in the thing side optical surface at the optical axis
It is convex surface that the 4th lens, which are stated, in the image side optical surface at the optical axis；And
5th lens, have a negative refractive power, the image side optical surface and thing side optical surface of the 5th lens be all it is aspherical, it is described
The thing side optical surface of 5th lens is provided with least one point of inflexion and the image side optical surface of the 5th lens is provided with least
Two points of inflexion；
The focal length of wherein described first lens to the 5th lens is respectively f1, f2, f3, f4 and f5, the five chips optics
The focal length of imaging lens group is f, and the distance of the thing side optical surfaces of first lens to imaging surface on the optical axis is OT, full
Foot row condition：
1.3 ≦ ∣ f/f1 │≤2.0,
OT<3.5mm。
17. five chips optical imaging lens group as claimed in claim 16, it is characterised in that in the thing side of the 3rd lens
On optical surface, rise and fall centered on the optical axis and less than the aspherical height in the range of Entry pupil diameters and be less than 0.2mm.
18. five chips optical imaging lens group as claimed in claim 16, it is characterised in that the thing sidelight of the 3rd lens
The point of inflexion to the vertical range of the optical axis on face near the optical axis is HI, meets following relationship：
0mm≤HI≤0.5mm。
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| CN103197401A (en) * | 2012-01-05 | 2013-07-10 | 大立光电股份有限公司 | Image lens assembly |
| CN103576297A (en) * | 2013-10-30 | 2014-02-12 | 浙江舜宇光学有限公司 | Pick-up lens |
| CN104914559A (en) * | 2014-03-13 | 2015-09-16 | 先进光电科技股份有限公司 | five-piece imaging lens group |
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| JP5742737B2 (en) * | 2012-01-30 | 2015-07-01 | コニカミノルタ株式会社 | Imaging lens, imaging device, and portable terminal |
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| CN103197401A (en) * | 2012-01-05 | 2013-07-10 | 大立光电股份有限公司 | Image lens assembly |
| CN103576297A (en) * | 2013-10-30 | 2014-02-12 | 浙江舜宇光学有限公司 | Pick-up lens |
| CN104914559A (en) * | 2014-03-13 | 2015-09-16 | 先进光电科技股份有限公司 | five-piece imaging lens group |
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