CN105739060B - Optical imaging lens group, image-taking device and electronic installation - Google Patents
Optical imaging lens group, image-taking device and electronic installation Download PDFInfo
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- CN105739060B CN105739060B CN201410756349.8A CN201410756349A CN105739060B CN 105739060 B CN105739060 B CN 105739060B CN 201410756349 A CN201410756349 A CN 201410756349A CN 105739060 B CN105739060 B CN 105739060B
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Abstract
The invention discloses a kind of optical imaging lens group, image-taking device and electronic installation, optical imaging lens group of the invention, by thing side to image side sequentially comprising the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens for having refracting power.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.Second lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.3rd lens have refracting power.4th lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle, and its image side surface is convex surface at dipped beam axle, and its thing side surface and image side surface are all aspherical.The negative refracting power of 5th lens tool, its thing side surface are concave surface at dipped beam axle, and its image side surface is concave surface at dipped beam axle, and its image side surface has an at least convex surface in off-axis place, and its thing side surface and image side surface are all aspherical.An airspace is respectively provided between above-mentioned wantonly two adjacent lens.Invention additionally discloses the image-taking device with above-mentioned optical imaging lens group and the electronic installation with image-taking device.
Description
Technical field
The present invention relates to a kind of optical imaging lens group, image-taking device and electronic installation, it is applied to more particularly to one kind
The optical imaging lens group and image-taking device of electronic installation.
Background technology
In recent years, flourishing with miniaturization phtographic lens, the demand of minisize image acquisition module increasingly improves, and general
The photo-sensitive cell of phtographic lens is nothing more than being photosensitive coupling element (Charge Coupled Device, CCD) or complementary aoxidize
Metal semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor) two
Kind, and progressing greatly with semiconductor process technique so that the Pixel Dimensions of photo-sensitive cell reduce, along with electronic product now with
The good and compact external form of function is development trend, and therefore, the miniaturization phtographic lens for possessing good image quality becomes
For main flow in the market.
Tradition is equipped on the high pixel miniaturization phtographic lens on electronic installation, uses based on quadruple lenses structure more,
But due to high-order smart mobile phone (Smart Phone), wearable device (Wearable Device), tablet PC (Tablet
Personal Computer) it is prevailing with the high standard mobile device such as infrared photographic lens, drive miniaturization pick-up lens to exist
Pixel is lifted with the requirement in image quality, and existing four-piece type lens group will be unable to meet the needs of higher order.
Although there is the general traditional five chip optical systems of development at present, the refracting power configuration in existing optical system is not
, easily make the change in refraction of incident ray excessive, and then allow image periphery easily to produce veiling glare, and also easily make optics
The back focal length of system is long, is unfavorable for the miniaturization of optical system.Further, refracting power concentrations may be caused in single
Lens, and it is an impediment to reduce the susceptibility of optical system.
The content of the invention
The present invention provides a kind of optical imaging lens group, image-taking device and electronic installation, wherein the first lens and second
Lens all have positive refracting power, help to be uniformly distributed the receipts light ability of imaging lens group, effectively to slow down the refraction of incident ray
Change, and then avoid image periphery from producing veiling glare.Can effectively it be reduced in addition, the first lens and the second lens all have positive refracting power
The back focal length of optical imaging lens group, optical imaging lens group is set to maintain miniaturization.In addition, when meeting specified conditions, second is saturating
Mirror has better suited positive refracting power, helps to balance the positive refracting power of the first lens and avoid the positive refracting power mistake of single lens
By force, effectively to reduce the susceptibility of optical imaging lens group.In addition, it also can effectively slow down the change in shape of the 4th lens, to keep away
Exempt from because change in shape is excessive and caused by face reflection problems, and reduce difficult forming degree.
The present invention provides a kind of optical imaging lens group, by thing side to image side sequentially comprising the first lens, the second lens, the
Three lens, the 4th lens and the 5th lens.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.The
Two lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.3rd lens have refracting power.4th lens have
Positive refracting power, its thing side surface are convex surface at dipped beam axle, and its image side surface is convex surface, its thing side surface and picture at dipped beam axle
Side surface is all aspherical.5th lens have a negative refracting power, and its thing side surface is concave surface at dipped beam axle, its image side surface in
It is concave surface at dipped beam axle, its image side surface has an at least convex surface in off-axis place, and its thing side surface and image side surface are all aspheric
Face.The lens for having refracting power in optical imaging lens group are five.First lens, the second lens, the 3rd lens, the 4th lens and
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 5th lens.The focal length of optical imaging lens group is f, first
The focal length of lens is f1, and the focal lengths of the second lens is f2, and the radius of curvature of the 4th lens thing side surface is R7, the 4th lens image side
The radius of curvature on surface is R8, and it meets following condition：
0<f1/f2<2.0；And
-3.0<(f/R7)+(f/R8)。
The present invention a kind of optical imaging lens group is separately provided, by thing side to image side sequentially comprising the first lens, the second lens,
3rd lens, the 4th lens and the 5th lens.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.
Second lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.3rd lens have refracting power.4th lens have
Have positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is convex surface at dipped beam axle, its thing side surface with
Image side surface is all aspherical.5th lens have a negative refracting power, and its thing side surface is concave surface at dipped beam axle, its image side surface
It is concave surface at dipped beam axle, in locating have an at least convex surface off axis, its thing side surface and image side surface are all non-on its image side surface
Sphere.The lens for having refracting power in optical imaging lens group are five.First lens, the second lens, the 3rd lens, the 4th lens
And the 5th between wantonly two adjacent lens in lens in being respectively provided with an airspace on optical axis.The focal length of first lens is f1, and second is saturating
The focal length of mirror is f2, and it meets following condition：
0<f1/f2<1.5。
The present invention a kind of optical imaging lens group is provided again, by thing side to image side sequentially comprising the first lens, the second lens,
3rd lens, the 4th lens and the 5th lens.First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.
Second lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.3rd lens have refracting power.4th lens have
Have positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is convex surface at dipped beam axle, its thing side surface with
Image side surface is all aspherical.5th lens have a negative refracting power, and its thing side surface is concave surface at dipped beam axle, its image side surface
It is concave surface at dipped beam axle, in locating have an at least convex surface off axis, its thing side surface and image side surface are all non-on its image side surface
Sphere.The lens for having refracting power in optical imaging lens group are five.First lens, the second lens, the 3rd lens, the 4th lens
And the 5th between wantonly two adjacent lens in lens in being respectively provided with an airspace on optical axis.Optical imaging lens group also includes a printing opacity
Flat board.When the focal length of the first lens is f1, the focal length of the second lens is f2, also comprising at least between the 5th lens and an imaging surface
One light-transmitting plate, light-transmitting plate between the 5th lens image side surface and imaging surface are FPCT in the gross thickness on optical axis, and it is full
Foot row condition：
0<f1/f2<1.5；And
FPCT<0.275 millimeter (mm).
The present invention separately provides a kind of image-taking device, and it includes foregoing optical imaging lens group and electronics photo-sensitive cell,
Wherein electronics photo-sensitive cell is arranged on the imaging surface of optical imaging lens group.
The present invention separately provides a kind of electronic installation, and it includes foregoing image-taking device.
When f1/f2 meets above-mentioned condition, the second lens have better suited positive refracting power, and it is saturating can more effectively to distribute first
The refracting power of mirror and avoid refracting power itself too strong, effectively to reduce the susceptibility of optical imaging lens group.
When (f/R7)+(f/R8) meets above-mentioned condition, it can effectively slow down the change in shape of the 4th lens, to avoid because of shape
Shape change it is excessive and caused by face reflection problems, and reduce difficult forming degree.
When FPCT meets above-mentioned condition, can effectively avoid the interference of non-essential light, and contribute to maintain optics into
As the miniaturization of lens group.
Brief description of the drawings
Fig. 1 shows image-taking device schematic diagram according to a first embodiment of the present invention；
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of first embodiment from left to right；
Fig. 3 shows image-taking device schematic diagram according to a second embodiment of the present invention；
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of second embodiment from left to right；
Fig. 5 shows image-taking device schematic diagram according to a third embodiment of the present invention；
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment from left to right；
Fig. 7 shows image-taking device schematic diagram according to a fourth embodiment of the present invention；
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment from left to right；
Fig. 9 shows image-taking device schematic diagram according to a fifth embodiment of the present invention；
Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right；
Figure 11 shows image-taking device schematic diagram according to a sixth embodiment of the present invention；
Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right；
Figure 13 shows image-taking device schematic diagram according to a seventh embodiment of the present invention；
Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right；
Figure 15 shows image-taking device schematic diagram according to a eighth embodiment of the present invention；
Figure 16 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right；
Figure 17 shows image-taking device schematic diagram according to a ninth embodiment of the present invention；
Figure 18 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 9th embodiment from left to right；
Figure 19 shows a kind of schematic diagram of electronic installation according to the present invention；
Figure 20 shows the schematic diagram of another electronic installation according to the present invention；
Figure 21 shows the schematic diagram of still another electronic installation according to the present invention；
Figure 22 shows the schematic diagram of still another electronic installation according to the present invention.
Reference
Capture Zhuan Zhi ︰ 10
Guang Quan ︰ 100,200,300,400,500,600,700,800,900
First Tou Jing ︰ 110,210,310,410,510,610,710,810,910
Thing Ce Biao Mian ︰ 111,211,311,411,511,611,711,811,911
As side surface ︰ 112,212,312,412,512,612,712,812,912
2nd saturating mirror ︰ 120,220,320,420,520,620,720,820,920
Thing Ce Biao Mian ︰ 121,221,321,421,521,621,721,821,921
As side surface ︰ 122,222,322,422,522,622,722,822,922
San Tou Jing ︰ 130,230,330,430,530,630,730,830,930
Thing Ce Biao Mian ︰ 131,231,331,431,531,631,731,831,931
As side surface ︰ 132,232,332,432,532,632,732,832,932
4th Tou Jing ︰ 140,240,340,440,540,640,740,840,940
Thing Ce Biao Mian ︰ 141,241,341,441,541,641,741,841,941
As side surface ︰ 142,242,342,442,542,642,742,842,942
5th Tou Jing ︰ 150,250,350,450,550,650,750,850,950
Thing Ce Biao Mian ︰ 151,251,351,451,551,651,751,851,951
As side surface ︰ 152,252,352,452,552,652,752,852,952
Filter optical element ︰ 160,260,360,460,560,660,760,860,960
Cheng Xiang Mian ︰ 170,270,370,470,570,670,770,870,970
Electronics photo-sensitive cell ︰ 180,280,380,480,580,680,780,880,980
BL：5th lens image side surface is to imaging surface in the distance on optical axis
CT1：First lens are in the thickness on optical axis
CT2：Second lens are in the thickness on optical axis
CT3：3rd lens are in the thickness on optical axis
CT4：4th lens are in the thickness on optical axis
CT5：5th lens are in the thickness on optical axis
EPD：The entrance pupil aperture of optical imaging lens group
The focal length of f ︰ optical imaging lens groups
f1：The focal length of first lens
f2：The focal length of second lens
f4：The focal length of 4th lens
f5：The focal length of 5th lens
The f-number of Fno ︰ optical imaging lens groups
FPCT：Light-transmitting plate between 5th lens image side surface and imaging surface is in the gross thickness on optical axis
The half at maximum visual angle in HFOV ︰ optical imaging lens groups
R3：The radius of curvature of second lens thing side surface
R4：The radius of curvature of second lens image side surface
R7：The radius of curvature of 4th lens thing side surface
R8：The radius of curvature of 4th lens image side surface
TL：First lens thing side surface is to imaging surface in the distance on optical axis
V2：The abbe number of second lens
Embodiment
Optical imaging lens group is by thing side to image side sequentially comprising the first lens, the second lens, the 3rd lens, the 4th lens
With the 5th lens.Wherein, the lens for having refracting power in optical imaging lens group are five.
In on optical axis between wantonly two adjacent lens in first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens
An airspace is respectively provided with, that is, the first lens, the second lens, the 3rd lens, the 4th lens and the 5th lens can be five lists
One disengaged (non-adhering) and the lens for having refracting power.Because the more disengaged lens of the technique of cemented lens are complicated, especially two
The composition surface of lens need to possess the curved surface of high accuracy, to reach the high adaptation during engagement of two lens, and in the process of engagement
In, more likely because off normal and caused by move axle defect, influence overall quality of optical imaging.Therefore, in optical imaging lens group
One lens to the 5th lens can be the lens of five single disengaged tool refracting powers, and then be effectively improved caused by cemented lens
Problem.
First lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.Whereby, it is possible to provide optical imagery is saturating
Positive refracting power needed for microscope group, and contribute to the total length of appropriate adjustment optical imaging lens group.
Second lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle.Whereby, the first lens and second saturating
Mirror all has positive refracting power, helps to be uniformly distributed the receipts light ability of imaging lens group, effectively to slow down the refraction of incident ray change
Change, and then avoid image periphery from producing veiling glare.In addition, the back focal length of optical imaging lens group can be reduced effectively, make optics into
As lens group maintains miniaturization.
3rd lens have refracting power.Whereby, contribute to correct aberration caused by the first lens and the second lens, and can drop
The susceptibility of low optical imaging lens group.
4th lens have positive refracting power, and its thing side surface is convex surface at dipped beam axle, and its image side surface is at dipped beam axle
For convex surface, its thing side surface can have an at least point of inflexion in off-axis place.Whereby, the shape that can effectively slow down the 4th lens becomes
Change, avoid lens shape change too greatly and caused by face reflection problems, and difficult forming degree can be reduced simultaneously, it is further effective
Correct the spherical aberration of optical imaging lens group and the aberration of off-axis visual field.
5th lens have negative refracting power, and its thing side surface is concave surface at dipped beam axle, and its image side surface is at dipped beam axle
For concave surface, its image side surface has an at least convex surface in off-axis place.Whereby, the principal point of optical imaging lens group can be made away from image side
End, and then shorten rear Jiao of optical imaging lens group, in favor of the miniaturization of optical imaging lens group.In addition, it can suppress off-axis
The light of visual field is incident in the angle on photo-sensitive cell, to increase the receiving efficiency of image photo-sensitive cell, further modified off-axis
The aberration of visual field.
The focal length of first lens is f1, and the focal length of the second lens is f2, and it meets following condition：0<f1/f2<2.0.Borrow
This, it can be ensured that the second lens have better suited positive refracting power, can more effectively distribute the refracting power of the first lens and avoid single
Lens refracting power is too strong, effectively to reduce the susceptibility of optical imaging lens group.It is preferred that it meets following condition：0<f1/f2
<1.5。
The focal length of optical imaging lens group is f, and the radius of curvature of the 4th lens thing side surface is R7, the 4th lens image side table
The radius of curvature in face is R8, and it meets following condition：-3.0<(f/R7)+(f/R8).Whereby, the 4th lens can effectively be slowed down
Change in shape, with avoid because change in shape is excessive and caused by face reflection problems, and reduce difficult forming degree.It is preferred that its
Meet following condition：-2.0<(f/R7)+(f/R8).More preferably, it meets following condition：-1.65<(f/R7)+(f/R8).Again
More preferably, it meets following condition：-1.5<(f/R7)+(f/R8)<-0.25.
Optical imaging lens group can include an at least light-transmitting plate.Light-transmitting plate is, for example, that filter element, infrared ray filter out
Element or plate glass etc..Light-transmitting plate between 5th lens image side surface and an imaging surface is in the gross thickness on optical axis
FPCT, it meets following condition：FPCT≤0.275 millimeter (mm).Whereby, the interference of non-essential light can be effectively avoided, and
Contribute to the miniaturization of maintenance optical imaging lens group.
The radius of curvature of second lens thing side surface is R3, and the radius of curvature on the second lens image side surface is R4, and it meets
Following condition：8.0<|(R3+R4)/(R3-R4)|.Whereby, the astigmatism of amendment optical imaging lens group is contributed to, to lift imaging
Quality.
The entrance pupil aperture of optical imaging lens group is EPD, and the second lens are CT2 in the thickness on optical axis, and it meets following
Condition：8.0<EPD/CT2.Whereby, contribute to the light-inletting quantity for maintaining optical imaging lens group enough, avoid the limitation of diffraction limit
And higher resolving power can be obtained.
The focal length of first lens is f1, and the focal length of the 4th lens is f4, and the focal length of the 5th lens is f5, and it meets following bar
Part：(|f4|+|f5|)/|f1|<1.25.Whereby, can balance optical imaging lens group refracting power configuration, to avoid aberration excessive
Produce, while can effectively reduce the susceptibility of optical imaging lens group.It is preferred that it meets following condition：(|f4|+|f5|)/|
f1|<1.0。
Second lens are CT2 in the thickness on optical axis, and the 3rd lens are CT3 in the thickness on optical axis, and it meets following bar
Part：2.0<CT3/CT2.Whereby, be advantageous to eyeglass and make shaping, and the lens error correction ability of the 3rd lens can be lifted.
The abbe number of second lens is V2, and it meets following condition：V2<30.Whereby, contribute to amendment optical imagery saturating
The aberration of microscope group.
First lens are CT1 in the thickness on optical axis, and the second lens are CT2 in the thickness on optical axis, and the 4th lens are in light
Thickness on axle is CT4, and the 5th lens are CT5 in the thickness on optical axis, and it meets following condition：0.85<CT1/(CT2+CT4+
CT5)<1.25.Whereby, the thickness of each lens is more suitable, contributes to homogenieity and mouldability of the lens when making.
The f-number of optical imaging lens group is Fno, and it meets following condition：Fno<1.75.Whereby, by appropriate adjustment
The aperture size of optical imaging lens group, it can make optical imaging lens group that there is the characteristic of large aperture, when light is inadequate still
Higher shutter speed can be used with shooting clear image.
5th lens image side surface is BL in the distance on optical axis to imaging surface, the first lens thing side surface to imaging surface in
Distance on optical axis is TL, and it meets following condition：BL/TL<0.18.Whereby, contribute to after shortening optical imaging lens group
Focal length, to maintain appropriate optical imaging lens group total length.
The optical imaging lens group of the present invention can be used in 750 nanometers of wavelength (nm) into 1050 nanometers of wave band.Whereby,
Infrared wavelength range light can be effectively captured, with suitable for various infrared photographies such as the detection of dynamic body-sensing, the shootings of low light source
Using.
First lens thing side surface is TL in the distance on optical axis to imaging surface, and the entrance pupil aperture of optical imaging lens group is
EPD, it meets following condition：TL/EPD<2.0.Whereby, the light-inletting quantity of optical imaging lens group can be increased, be advantageous to be lifted low
Capture photoperceptivity under lighting environment.
In optical imaging lens group the configuration of aperture can be preposition aperture or in put aperture.Wherein preposition aperture implies that aperture
Be arranged between object and the first lens, in put aperture and then represent that aperture is arranged between the first lens and imaging surface.If aperture is
Preposition aperture, the outgoing pupil (Exit Pupil) and imaging surface that can make optical imaging lens group produce longer distance, make its tool
There is telecentricity (Telecentric) effect, and the CCD or CMOS that can increase electronics photo-sensitive cell receive the efficiency of image；If in
Aperture is put, contributes to the angle of visual field of expansion system, makes optical imaging lens group that there is the advantage of wide-angle lens.
In the optical imaging lens group that the present invention discloses, the material of lens can be plastics or glass.When the material of lens is
Glass, the free degree of refracting power configuration can be increased.It is another when lens material is plastics, then can effectively reduce production cost.This
Outside, the aspherical shape that can be easily fabricated to beyond sphere, can be obtained more in being set on lens surface aspherical (ASP)
Control variable, to cut down aberration, and then using the number of lens needed for reducing, therefore can effectively reduce optics overall length
Degree.
In the optical imaging lens group that the present invention discloses, if lens surface is convex surface and when not defining the convex surface position,
It is convex surface at dipped beam axle to represent the lens surface；If lens surface is concave surface and when not defining the concave surface position, then it represents that should
Lens surface is concave surface at dipped beam axle.If the refracting power or focal length of lens do not define its regional location, then it represents that the lens
Refracting power or focal length be refracting power or focal length of the lens at dipped beam axle.
In the optical imaging lens group that the present invention discloses, the imaging surface (Image Surface) of optical imaging lens group according to
The difference of its corresponding electronics photo-sensitive cell can be a plane or have the curved surface of any curvature, particularly relate to concave surface towards past thing side
The curved surface in direction.
In the optical imaging lens group that the present invention discloses, an at least diaphragm is may be provided with, it is saturating that its position may be disposed at first
Before mirror, between each lens or after last lens, the species of the diaphragm light diaphragm (Glare Stop) or regards as shone
Field diaphragm (Field Stop) etc., to reduce veiling glare, help to lift the quality of image.
In the optical imaging lens group that the present invention discloses, light-transmitting plate may be disposed between the 5th lens and imaging surface.When
When light-transmitting plate is arranged between the 5th lens and imaging surface, the 5th lens image side surface to imaging surface is in the distance BL on optical axis
Comprising light-transmitting plate in the thickness on optical axis, and the first lens thing side surface includes printing opacity to imaging surface in the distance TL on optical axis
Flat board is in the thickness on optical axis.
The present invention also provides a kind of image-taking device, and it includes aforementioned optical imaging lens group and electronics photo-sensitive cell, its
Middle electronics photo-sensitive cell is arranged on the imaging surface of optical imaging lens group.It is preferred that the image-taking device can further include mirror
Cylinder (Barrel Member), support device (Holder Member) or its combination.
Figure 19, Figure 20, Figure 21 and Figure 22 are refer to, image-taking device 10 many-sided can be applied to smart mobile phone (such as Figure 19 institutes
Show), tablet PC (as shown in figure 20), wearable device (as shown in figure 21) and infrared photographic device (as shown in figure 22)
Deng.It is preferred that electronic installation can further include control unit (Control Units), display unit (Display
Units), storage element (Storage Units), temporary storage element (RAM) or its combination.
The more visual demand of optical imaging lens group of the present invention is applied in the optical system of mobile focusing, and has concurrently excellent
Lens error correction and the characteristic of good image quality.The present invention many-sided can also be applied to three-dimensional (3D) image capture, digital camera,
Mobile device, tablet PC, intelligent television, network monitoring device, drive recorder, reversing developing apparatus, somatic sensation television game machine
With in the electronic installation such as wearable device.The optical imaging lens group of the present invention can also be applied to carry the electricity of infrared ray camera lens
The detection of sub-device, such as dynamic body-sensing, the shooting of low light source need electronic installation for avoiding infrared ray from disturbing etc..Furthermore, it is understood that
The optical imaging lens group of the present invention can be used in 750 nanometers of wavelength (nm) into 1050 nanometers of wave band, but this wavelength band
And it is not used to the limitation present invention.Before take off electronic installation be only exemplarily illustrate the present invention practice example, not limit
The operation strategies of the image-taking device of the present invention.
According to above-mentioned embodiment, specific embodiment set forth below simultaneously coordinates accompanying drawing to be described in detail.
<First embodiment>
Refer to Fig. 1 and Fig. 2, wherein Fig. 1 shows image-taking device schematic diagram according to a first embodiment of the present invention, Fig. 2 by
Left-to-right is sequentially spherical aberration, astigmatism and the distortion curve figure of first embodiment.As shown in Figure 1, image-taking device include optics into
As lens group (not another label) and electronics photo-sensitive cell 180.Optical imaging lens group sequentially includes aperture by thing side to image side
100th, the first lens 110, the second lens 120, the 3rd lens 130, the 4th lens 140, the 5th lens 150, filter element
(Filter) 160 with imaging surface 170.Wherein, electronics photo-sensitive cell 180 is arranged on imaging surface 170.In optical imaging lens group
The single disengaged lens for having refracting power are five (110-150).First lens 110, the second lens 120, the 3rd lens 130,
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 4th lens 140 and the 5th lens 150.
First lens 110 have positive refracting power, and are plastic material, and its thing side surface 111 is convex surface at dipped beam axle, its
Image side surface 112 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 120 have positive refracting power, and are plastic material, and its thing side surface 121 is convex surface at dipped beam axle, its
Image side surface 122 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 130 have negative refracting power, and are plastic material, and its thing side surface 131 is concave surface at dipped beam axle, its
Image side surface 132 is concave surface at dipped beam axle, and its two surface is all aspherical.
4th lens 140 have positive refracting power, and are plastic material, and its thing side surface 141 is convex surface at dipped beam axle, its
Image side surface 142 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 141 has at least in off-axis place
One point of inflexion.
5th lens 150 have negative refracting power, and are plastic material, and its thing side surface 151 is concave surface at dipped beam axle, its
Image side surface 152 is concave surface at dipped beam axle, and its two surface is all aspherical, and its image side surface 152 has at least in off-axis place
One convex surface.
The material of filter element 160 is glass, and it is arranged between the 5th lens 150 and imaging surface 170, has no effect on light
Learn the focal length of imaging lens group.
The aspherical fitting equation of above-mentioned each lens represents as follows：
：
Wherein：
X：Apart from the point that optical axis is Y, its relative distance with being tangential on the section of intersection point on aspherical optical axis on aspherical；
Y：The vertical range of point and optical axis in aspheric curve；
R：Radius of curvature；
k：Conical surface coefficient；And
Ai：I-th rank asphericity coefficient.
In the optical imaging lens group of first embodiment, the focal length of optical imaging lens group is f, optical imaging lens group
F-number (F-number) is Fno, and the half at maximum visual angle is HFOV in optical imaging lens group, and its numerical value is as follows：F=
5.98mm (millimeter), Fno=1.45, HFOV=27.4 degree (deg.).
The abbe number of second lens 120 is V2, and it meets following condition：V2=23.5.
The radius of curvature of second lens thing side surface 121 is R3, and the radius of curvature on the second lens image side surface 122 is R4,
It meets following condition：| (R3+R4)/(R3-R4) |=10.00.
The focal length of optical imaging lens group is f, and the radius of curvature of the 4th lens thing side surface 141 is R7, the 4th lens picture
The radius of curvature of side surface 142 is R8, and it meets following condition：(f/R7)+(f/R8)=- 0.55.
Second lens 120 are CT2 in the thickness on optical axis, and the 3rd lens 130 are CT3 in the thickness on optical axis, and it meets
Following condition：CT3/CT2=3.38.
First lens 110 are CT1 in the thickness on optical axis, and the second lens 120 are CT2 in the thickness on optical axis, and the 4th is saturating
Mirror 140 is CT4 in the thickness on optical axis, and the 5th lens 150 are CT5 in the thickness on optical axis, and it meets following condition：CT1/
(CT2+CT4+CT5)=0.88.
Light-transmitting plate between 5th lens image side surface 152 and imaging surface 170 in the gross thickness on optical axis be FPCT (
In the present embodiment, light-transmitting plate is filter element 160, and filter element 160 in the thickness on optical axis be FPCT), it is full
Foot row condition：FPCT=0.260mm.
The entrance pupil aperture of optical imaging lens group is EPD, and the second lens 120 are CT2 in the thickness on optical axis, under it meets
Row condition：EPD/CT2=12.50.
The focal length of first lens 110 is f1, and the focal length of the second lens 120 is f2, and it meets following condition：F1/f2=
0.57。
The focal length of first lens 110 is f1, and the focal length of the 4th lens 140 is f4, and the focal length of the 5th lens 150 is f5, its
Meet following condition：(| f4 |+| f5 |)/| f1 |=0.69.
First lens thing side surface 111 is TL in the distance on optical axis to imaging surface 170, the entrance pupil of optical imaging lens group
Aperture is EPD, and it meets following condition：TL/EPD=1.69.
5th lens image side surface 152 is BL in the distance on optical axis to imaging surface 170, the first lens thing side surface 111
In the distance on optical axis it is TL to imaging surface 170, it meets following condition：BL/TL=0.15.
Coordinate with reference to following table 1 and table 2.
Table 1 is the detailed structured data of Fig. 1 first embodiments, and wherein the unit of radius of curvature, thickness and focal length is mm (millis
Rice), and surface 0 to 14 is sequentially represented by the surface of thing side to image side.Table 2 is the aspherical surface data in first embodiment, wherein,
K is the conical surface coefficient in aspheric curve equation, and A4 to A16 then represents each rank asphericity coefficient of surface the 4 to 16th.In addition,
Following embodiment form is the schematic diagram and aberration curve figure of corresponding each embodiment, and the definition of data is all real with first in form
Apply that the definition of the table 1 and table 2 of example is identical, and not in this to go forth.
<Second embodiment>
Refer to Fig. 3 and Fig. 4, wherein Fig. 3 shows image-taking device schematic diagram according to a second embodiment of the present invention, Fig. 4 by
Left-to-right is sequentially spherical aberration, astigmatism and the distortion curve figure of second embodiment.From the figure 3, it may be seen that image-taking device include optics into
As lens group (not another label) and electronics photo-sensitive cell 280.Optical imaging lens group sequentially includes aperture by thing side to image side
200th, the first lens 210, the second lens 220, the 3rd lens 230, the 4th lens 240, the 5th lens 250, filter element 260 with
Imaging surface 270.Wherein, electronics photo-sensitive cell 280 is arranged on imaging surface 270.Has the list of refracting power in optical imaging lens group
One disengaged lens are five (210-250).First lens 210, the second lens 220, the 3rd lens 230, the and of the 4th lens 240
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 5th lens 250.
First lens 210 have positive refracting power, and are plastic material, and its thing side surface 211 is convex surface at dipped beam axle, its
Image side surface 212 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 220 have positive refracting power, and are plastic material, and its thing side surface 221 is convex surface at dipped beam axle, its
Image side surface 222 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 230 have negative refracting power, and are plastic material, and its thing side surface 231 is concave surface at dipped beam axle, its
Image side surface 232 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 240 have positive refracting power, and are plastic material, and its thing side surface 241 is convex surface at dipped beam axle, its
Image side surface 242 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 141 has at least in off-axis place
One point of inflexion.
5th lens 250 have negative refracting power, and are plastic material, and its thing side surface 251 is concave surface at dipped beam axle, its
Image side surface 252 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 252 has at least in off-axis place
One convex surface.
The material of filter element 260 is glass, and it is arranged between the 5th lens 250 and imaging surface 270, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 3 and table 4.
In second embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<3rd embodiment>
Refer to Fig. 5 and Fig. 6, wherein Fig. 5 shows image-taking device schematic diagram according to a third embodiment of the present invention, Fig. 6 by
Left-to-right is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment.As shown in Figure 5, image-taking device include optics into
As lens group (not another label) and electronics photo-sensitive cell 380.Optical imaging lens group sequentially includes aperture by thing side to image side
300th, the first lens 310, the second lens 320, the 3rd lens 330, the 4th lens 340, the 5th lens 350, filter element 360 with
Imaging surface 370.Wherein, electronics photo-sensitive cell 380 is arranged on imaging surface 370.Has the list of refracting power in optical imaging lens group
One disengaged lens are five (310-350).First lens 310, the second lens 320, the 3rd lens 330, the and of the 4th lens 340
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 5th lens 350.
First lens 310 have positive refracting power, and are plastic material, and its thing side surface 311 is convex surface at dipped beam axle, its
Image side surface 312 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 320 have positive refracting power, and are plastic material, and its thing side surface 321 is convex surface at dipped beam axle, its
Image side surface 322 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 330 have negative refracting power, and are plastic material, and its thing side surface 331 is concave surface at dipped beam axle, its
Image side surface 332 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 340 have positive refracting power, and are plastic material, and its thing side surface 341 is convex surface at dipped beam axle, its
Image side surface 342 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 341 has at least in off-axis place
One point of inflexion.
5th lens 350 have negative refracting power, and are plastic material, and its thing side surface 351 is concave surface at dipped beam axle, its
Image side surface 352 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 352 has at least in off-axis place
One convex surface.
The material of filter element 360 is glass, and it is arranged between the 5th lens 350 and imaging surface 370, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 5 and table 6.
In 3rd embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Fourth embodiment>
Refer to Fig. 7 and Fig. 8, wherein Fig. 7 shows image-taking device schematic diagram according to a fourth embodiment of the present invention, Fig. 8 by
Left-to-right is sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment.As shown in Figure 7, image-taking device include optics into
As lens group (not another label) and electronics photo-sensitive cell 480.Optical imaging lens group sequentially includes aperture by thing side to image side
400th, the first lens 410, the second lens 420, the 3rd lens 430, the 4th lens 440, the 5th lens 450, filter element 460 with
Imaging surface 470.Wherein, electronics photo-sensitive cell 480 is arranged on imaging surface 470.Has the list of refracting power in optical imaging lens group
One disengaged lens are five (410-450).First lens 410, the second lens 420, the 3rd lens 430, the and of the 4th lens 440
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 5th lens 450.
First lens 410 have positive refracting power, and are plastic material, and its thing side surface 411 is convex surface at dipped beam axle, its
Image side surface 412 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 420 have positive refracting power, and are plastic material, and its thing side surface 421 is convex surface at dipped beam axle, its
Image side surface 422 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 430 have negative refracting power, and are plastic material, and its thing side surface 431 is concave surface at dipped beam axle, its
Image side surface 432 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 440 have positive refracting power, and are plastic material, and its thing side surface 441 is convex surface at dipped beam axle, its
Image side surface 442 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 441 has at least in off-axis place
One point of inflexion.
5th lens 450 have negative refracting power, and are plastic material, and its thing side surface 451 is concave surface at dipped beam axle, its
Image side surface 452 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 452 has at least in off-axis place
One convex surface.
The material of filter element 460 is glass, and it is arranged between the 5th lens 450 and imaging surface 470, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 7 and table 8.
In fourth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<5th embodiment>
Fig. 9 and Figure 10 is refer to, wherein Fig. 9 shows image-taking device schematic diagram according to a fifth embodiment of the present invention, Figure 10
It is sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right.As shown in Figure 9, image-taking device includes optics
Imaging lens group (not another label) and electronics photo-sensitive cell 580.Optical imaging lens group sequentially includes aperture by thing side to image side
500th, the first lens 510, the second lens 520, the 3rd lens 530, the 4th lens 540, the 5th lens 550, filter element 560 with
Imaging surface 570.Wherein, electronics photo-sensitive cell 580 is arranged on imaging surface 570.Has the list of refracting power in optical imaging lens group
One disengaged lens are five (510-550).First lens 510, the second lens 520, the 3rd lens 530, the and of the 4th lens 540
In being respectively provided with an airspace on optical axis between wantonly two adjacent lens in 5th lens 550.
First lens 510 have positive refracting power, and are plastic material, and its thing side surface 511 is convex surface at dipped beam axle, its
Image side surface 512 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 520 have positive refracting power, and are plastic material, and its thing side surface 521 is convex surface at dipped beam axle, its
Image side surface 522 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 530 have positive refracting power, and are plastic material, and its thing side surface 531 is concave surface at dipped beam axle, its
Image side surface 532 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 540 have positive refracting power, and are plastic material, and its thing side surface 541 is convex surface at dipped beam axle, its
Image side surface 542 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 541 has at least in off-axis place
One point of inflexion.
5th lens 550 have negative refracting power, and are plastic material, and its thing side surface 551 is concave surface at dipped beam axle, its
Image side surface 552 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 552 has at least in off-axis place
One convex surface.
The material of filter element 560 is glass, and it is arranged between the 5th lens 550 and imaging surface 570, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 9 and table 10.
In 5th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Sixth embodiment>
Figure 11 and Figure 12 is refer to, wherein Figure 11 shows image-taking device schematic diagram according to a sixth embodiment of the present invention, figure
12 be sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right.As shown in Figure 11, image-taking device includes light
Learn imaging lens group (not another label) and electronics photo-sensitive cell 680.Optical imaging lens group sequentially includes light by thing side to image side
Enclose the 600, first lens 610, the second lens 620, the 3rd lens 630, the 4th lens 640, the 5th lens 650, filter element 660
With imaging surface 670.Wherein, electronics photo-sensitive cell 680 is arranged on imaging surface 670.Has refracting power in optical imaging lens group
Single disengaged lens are five (610-650).First lens 610, the second lens 620, the 3rd lens 630, the 4th lens 640
And the 5th between wantonly two adjacent lens in lens 650 in being respectively provided with an airspace on optical axis.
First lens 610 have positive refracting power, and are plastic material, and its thing side surface 611 is convex surface at dipped beam axle, its
Image side surface 612 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 620 have positive refracting power, and are plastic material, and its thing side surface 621 is convex surface at dipped beam axle, its
Image side surface 622 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 630 have negative refracting power, and are plastic material, and its thing side surface 631 is convex surface at dipped beam axle, its
Image side surface 632 is concave surface at dipped beam axle, and its two surface is all aspherical.
4th lens 640 have positive refracting power, and are plastic material, and its thing side surface 641 is convex surface at dipped beam axle, its
Image side surface 642 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 641 has at least in off-axis place
One point of inflexion.
5th lens 650 have negative refracting power, and are plastic material, and its thing side surface 651 is concave surface at dipped beam axle, its
Image side surface 652 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 652 has at least in off-axis place
One convex surface.
The material of filter element 660 is glass, and it is arranged between the 5th lens 650 and imaging surface 670, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 11 and table 12.
In sixth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<7th embodiment>
Figure 13 and Figure 14 is refer to, wherein Figure 13 shows image-taking device schematic diagram according to a seventh embodiment of the present invention, figure
14 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right.As shown in Figure 13, image-taking device includes light
Learn imaging lens group (not another label) and electronics photo-sensitive cell 780.Optical imaging lens group is by thing side to image side sequentially comprising the
One lens 710, aperture 700, the second lens 720, the 3rd lens 730, the 4th lens 740, the 5th lens 750, filter element 760
With imaging surface 770.Wherein, electronics photo-sensitive cell 780 is arranged on imaging surface 770.Has refracting power in optical imaging lens group
Single disengaged lens are five (710-750).First lens 710, the second lens 720, the 3rd lens 730, the 4th lens 740
And the 5th between wantonly two adjacent lens in lens 750 in being respectively provided with an airspace on optical axis.
First lens 710 have positive refracting power, and are plastic material, and its thing side surface 711 is convex surface at dipped beam axle, its
Image side surface 712 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 720 have positive refracting power, and are plastic material, and its thing side surface 721 is convex surface at dipped beam axle, its
Image side surface 722 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 730 have negative refracting power, and are plastic material, and its thing side surface 731 is convex surface at dipped beam axle, its
Image side surface 732 is concave surface at dipped beam axle, and its two surface is all aspherical.
4th lens 740 have positive refracting power, and are plastic material, and its thing side surface 741 is convex surface at dipped beam axle, its
Image side surface 742 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 741 has at least in off-axis place
One point of inflexion.
5th lens 750 have negative refracting power, and are plastic material, and its thing side surface 751 is concave surface at dipped beam axle, its
Image side surface 752 is concave surface at dipped beam axle, and its two surface is all aspherical.Its image side surface 752 has at least in off-axis place
One convex surface.
The material of filter element 760 is glass, and it is arranged between the 5th lens 750 and imaging surface 770, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 13 and table 14.
In 7th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<8th embodiment>
Figure 15 and Figure 16 is refer to, wherein Figure 15 shows image-taking device schematic diagram according to a eighth embodiment of the present invention, figure
16 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right.As shown in Figure 15, image-taking device includes light
Learn imaging lens group (not another label) and electronics photo-sensitive cell 880.Optical imaging lens group sequentially includes light by thing side to image side
Enclose the 800, first lens 810, the second lens 820, the 3rd lens 830, the 4th lens 840, the 5th lens 850, filter element 860
With imaging surface 870.Wherein, electronics photo-sensitive cell 880 is arranged on imaging surface 870.Has refracting power in optical imaging lens group
Single disengaged lens are five (810-850).First lens 810, the second lens 820, the 3rd lens 830, the 4th lens 840
And the 5th between wantonly two adjacent lens in lens 850 in being respectively provided with an airspace on optical axis.
First lens 810 have positive refracting power, and are plastic material, and its thing side surface 811 is convex surface at dipped beam axle, its
Image side surface 812 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 820 have positive refracting power, and are plastic material, and its thing side surface 821 is convex surface at dipped beam axle, its
Image side surface 822 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 830 have positive refracting power, and are plastic material, and its thing side surface 831 is convex surface at dipped beam axle, its
Image side surface 832 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 840 have positive refracting power, and are plastic material, and its thing side surface 841 is convex surface at dipped beam axle, its
Image side surface 842 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 841 has at least in off-axis place
One point of inflexion.
5th lens 850 have negative refracting power, and are plastic material, and its thing side surface 851 is concave surface at dipped beam axle, its
Image side surface 852 is concave surface at dipped beam axle, and its two surface is all aspherical, and its image side surface 852 has at least in off-axis place
One convex surface.
The material of filter element 860 is glass, and it is arranged between the 5th lens 850 and imaging surface 870, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 15 and table 16.
In 8th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<9th embodiment>
Figure 17 and Figure 18 is refer to, wherein Figure 17 shows image-taking device schematic diagram according to a ninth embodiment of the present invention, figure
18 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 9th embodiment from left to right.As shown in Figure 17, image-taking device includes light
Learn imaging lens group (not another label) and electronics photo-sensitive cell 980.Optical imaging lens group sequentially includes light by thing side to image side
Enclose the 900, first lens 910, the second lens 920, the 3rd lens 930, the 4th lens 940, the 5th lens 950, filter element 960
With imaging surface 970.Wherein, electronics photo-sensitive cell 980 is arranged on imaging surface 970.Has refracting power in optical imaging lens group
Single disengaged lens are five (910-950).First lens 910, the second lens 920, the 3rd lens 930, the 4th lens 940
And the 5th between wantonly two adjacent lens in lens 950 in being respectively provided with an airspace on optical axis.
First lens 910 have positive refracting power, and are plastic material, and its thing side surface 911 is convex surface at dipped beam axle, its
Image side surface 912 is concave surface at dipped beam axle, and its two surface is all aspherical.
Second lens 920 have positive refracting power, and are plastic material, and its thing side surface 921 is convex surface at dipped beam axle, its
Image side surface 922 is concave surface at dipped beam axle, and its two surface is all aspherical.
3rd lens 930 have negative refracting power, and are plastic material, and its thing side surface 931 is concave surface at dipped beam axle, its
Image side surface 932 is convex surface at dipped beam axle, and its two surface is all aspherical.
4th lens 940 have positive refracting power, and are plastic material, and its thing side surface 941 is convex surface at dipped beam axle, its
Image side surface 942 is convex surface at dipped beam axle, and its two surface is all aspherical, and its thing side surface 941 has at least in off-axis place
One point of inflexion.
5th lens 950 have negative refracting power, and are plastic material, and its thing side surface 951 is concave surface at dipped beam axle, its
Image side surface 952 is concave surface at dipped beam axle, and its two surface is all aspherical, and its image side surface 952 has at least in off-axis place
One convex surface.
The material of filter element 960 is glass, and it is arranged between the 5th lens 950 and imaging surface 970, has no effect on light
Learn the focal length of imaging lens group.
It please coordinate with reference to following table 17 and table 18.
In 9th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
Above-mentioned image-taking device can be equipped in electronic installation.The present invention is saturating using the optical imagery of five tool refracting power lens
Microscope group, wherein the first lens and the second lens all have positive refracting power, help to be uniformly distributed the receipts light ability of imaging lens group, with
Effectively slow down the change in refraction of incident ray, and then avoid image periphery from producing veiling glare.In addition, the first lens and the second lens
All have the back focal length that positive refracting power can effectively reduce imaging lens group, optical imaging lens group is maintained miniaturization.In addition, when full
Sufficient specified conditions, the second lens have better suited positive refracting power, help to balance the positive refracting power of the first lens, and avoid list
The positive refracting power of one lens is too strong, effectively to reduce the susceptibility of optical imaging lens group.In addition, it can effectively slow down the 4th lens
Change in shape, with avoid because change in shape is excessive and caused by face reflection problems, and reduce difficult forming degree.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any to be familiar with this skill
Person, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention is worked as
It is defined depending on the scope of which is defined in the appended claims.
Claims (17)
1. a kind of optical imaging lens group, it is characterised in that sequentially included by thing side to image side：
One first lens, have positive refracting power, and its thing side surface is convex surface at dipped beam axle；
One second lens, there is positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is at dipped beam axle
Concave surface；
One the 3rd lens, there is refracting power；
One the 4th lens, there is positive refracting power, its thing side surface is convex surface at dipped beam axle, and its image side surface is at dipped beam axle
Convex surface, its thing side surface and image side surface are all aspherical；And
One the 5th lens, there is negative refracting power, its thing side surface is concave surface at dipped beam axle, and its image side surface is at dipped beam axle
Concave surface, its image side surface have an at least convex surface in off-axis place, and its thing side surface and image side surface are all aspherical；
Wherein, in the optical imaging lens group have refracting power lens be five, first lens, second lens,
In 3rd lens, the 4th lens and the 5th lens between wantonly two adjacent lens between an air is respectively provided with optical axis
Every；
Wherein, the focal length of the optical imaging lens group is f, and the focal lengths of first lens is f1, Jiao of second lens
It is R7 away from the radius of curvature for f2, the 4th lens thing side surface, the radius of curvature on the 4th lens image side surface is R8,
It meets following condition：
0<f1/f2<2.0；And
-3.0<(f/R7)+(f/R8)。
2. optical imaging lens group according to claim 1, it is characterised in that the focal length of first lens is f1, institute
The focal length for stating the second lens is f2, and it meets following condition：
0<f1/f2<1.5。
3. optical imaging lens group according to claim 2, it is characterised in that the curvature of the second lens thing side surface
Radius is R3, and the radius of curvature on the second lens image side surface is R4, and it meets following condition：
8.0<|(R3+R4)/(R3-R4)|。
4. optical imaging lens group according to claim 2, it is characterised in that the optical imaging lens group enters pupil
Footpath is EPD, and second lens are CT2 in the thickness on optical axis, and it meets following condition：
8.0<EPD/CT2。
5. optical imaging lens group according to claim 2, it is characterised in that the focal length of the optical imaging lens group is
F, the radius of curvature of the 4th lens thing side surface is R7, and the radius of curvature on the 4th lens image side surface is R8, and it is full
Foot row condition：
-2.0<(f/R7)+(f/R8)。
6. optical imaging lens group according to claim 5, it is characterised in that the focal length of first lens is f1, institute
The focal length for stating the 4th lens is f4, and the focal length of the 5th lens is f5, and it meets following condition：
(|f4|+|f5|)/|f1|<1.25。
7. optical imaging lens group according to claim 5, it is characterised in that second lens are in the thickness on optical axis
For CT2, the 3rd lens are CT3 in the thickness on optical axis, and it meets following condition：
2.0<CT3/CT2。
8. optical imaging lens group according to claim 1, it is characterised in that the abbe number of second lens is
V2, it meets following condition：
V2<30。
9. optical imaging lens group according to claim 8, it is characterised in that between the 5th lens and an imaging surface
Also include an at least light-transmitting plate, at least light-transmitting plate between the 5th lens image side surface and the imaging surface
It is FPCT in the gross thickness on optical axis, it meets following condition：
FPCT≤0.275 millimeter.
10. optical imaging lens group according to claim 8, it is characterised in that first lens are in the thickness on optical axis
It is CT2 in the thickness on optical axis to spend for CT1, second lens, and the 4th lens are CT4 in the thickness on optical axis, described
5th lens are CT5 in the thickness on optical axis, and it meets following condition：
0.85<CT1/(CT2+CT4+CT5)<1.25。
11. optical imaging lens group according to claim 8, it is characterised in that the 4th lens thing side surface in from
There is an at least point of inflexion at axle.
12. optical imaging lens group according to claim 1, it is characterised in that the focal length of the optical imaging lens group
For f, the radius of curvature of the 4th lens thing side surface is R7, and the radius of curvature on the 4th lens image side surface is R8, its
Meet following condition：
-1.5<(f/R7)+(f/R8)<-0.25。
13. optical imaging lens group according to claim 1, it is characterised in that the aperture of the optical imaging lens group
It is worth for Fno, it meets following condition：
Fno<1.75。
14. optical imaging lens group according to claim 1, it is characterised in that the 5th lens image side surface to one
Imaging surface is BL in the distance on optical axis, and the first lens thing side surface to the imaging surface is TL in the distance on optical axis,
It meets following condition：
BL/TL<0.18。
15. optical imaging lens group according to claim 1, it is characterised in that the optical imaging lens are used in ripple
In long 750 nanometers to 1050 nanometers wave band.
16. a kind of image-taking device, it is characterised in that include：
Optical imaging lens group according to claim 1；And
One electronics photo-sensitive cell, wherein the sense electronicses optical element is arranged on an imaging surface of the optical imaging lens group.
17. a kind of electronic installation, it is characterised in that include：
Image-taking device according to claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756349.8A CN105739060B (en) | 2014-12-10 | 2014-12-10 | Optical imaging lens group, image-taking device and electronic installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756349.8A CN105739060B (en) | 2014-12-10 | 2014-12-10 | Optical imaging lens group, image-taking device and electronic installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105739060A CN105739060A (en) | 2016-07-06 |
| CN105739060B true CN105739060B (en) | 2018-01-02 |
Family
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Family Applications (1)
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| CN201410756349.8A Active CN105739060B (en) | 2014-12-10 | 2014-12-10 | Optical imaging lens group, image-taking device and electronic installation |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI616675B (en) * | 2016-07-14 | 2018-03-01 | 大立光電股份有限公司 | Optical photographing assembly, image capturing apparatus and electronic device |
| CN106291883B (en) * | 2016-09-30 | 2019-01-01 | 浙江舜宇光学有限公司 | Pick-up lens and the photographic device for being equipped with the pick-up lens |
| TWI625546B (en) * | 2016-11-09 | 2018-06-01 | 大立光電股份有限公司 | Photographing optical lens system, imaging apparatus and electronic device |
| CN107065128A (en) * | 2017-01-20 | 2017-08-18 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| WO2019052199A1 (en) | 2017-09-13 | 2019-03-21 | 浙江舜宇光学有限公司 | Camera lens |
| CN111736316B (en) * | 2020-08-25 | 2020-11-20 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
| CN113933967B (en) * | 2021-10-14 | 2023-07-04 | 江西晶超光学有限公司 | Optical lens, camera module and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5298682B2 (en) * | 2008-07-24 | 2013-09-25 | コニカミノルタ株式会社 | Imaging lens |
| US7965454B2 (en) * | 2008-08-28 | 2011-06-21 | Konica Minolta Opto, Inc. | Imaging lens and small-size image pickup apparatus using the same |
| JP2010145648A (en) * | 2008-12-17 | 2010-07-01 | Fujinon Corp | Imaging lens constituted of three groups and imaging apparatus |
| TWI435103B (en) * | 2012-04-06 | 2014-04-21 | Largan Precision Co Ltd | Optical imaging lens system |
| JP6105317B2 (en) * | 2013-01-25 | 2017-03-29 | カンタツ株式会社 | Wide-angle imaging lens |
| TWI487939B (en) * | 2013-11-08 | 2015-06-11 | Largan Precision Co Ltd | Optical photographing lens assembly, image capturing device and electronic mobile terminal |
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