CN105824107B - Optical image taking system, image-taking device and electronic device - Google Patents
Optical image taking system, image-taking device and electronic device Download PDFInfo
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Abstract
The invention discloses a kind of optical image taking system, image-taking device and electronic device, optical image taking system is sequentially included the first lens, the second lens and the 3rd lens of tool refracting power by object side to image side.First lens have positive refracting power, and object side surface is to be convex at dipped beam axis, and to be convex at dipped beam axis, two surfaces are all aspherical on image side surface, and is plastic cement material.Second lens have positive refracting power, and object side surface is to be recessed at dipped beam axis, and to be convex at dipped beam axis, two surfaces are all aspherical on image side surface, and is plastic cement material.3rd lens have negative refracting power, and image side surface is to be recessed at dipped beam axis, and image side surface locates have an at least convex surface off axis, and two surfaces are all aspherical, and is plastic cement material.The lens of optical image taking system tool refracting power are three pieces.Optical image taking system further includes aperture, between the first lens image side surface and the second lens object side surface.Invention additionally discloses the image-taking device with above-mentioned optical image taking system and the electronic devices with image-taking device.
Description
Technical field
It is more particularly to a kind of to be suitable for electronics the present invention relates to a kind of optical image taking system, image-taking device and electronic device
The optical image taking system and image-taking device of device.
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 light and short external form of function is development trend, and therefore, the miniaturization phtographic lens for possessing good image quality becomes
For mainstream currently on the market.
Tradition is equipped on the high pixel miniaturization phtographic lens on electronic device, mostly using based on two-chip type lens arrangement,
But due to high-order intelligent mobile phone (Smart Phone), wearable device (Wearable Device), tablet computer
The high standards mobile devices such as (Tablet Personal Computer) and infrared photographic lens it is prevailing, miniaturization is driven to take the photograph
As requirement promotion of the camera lens in pixel and image quality, existing two-chip type lens group will be unable to meet the needs of higher order.
Although there is the general traditional three-chip type optical system of development at present, the refracting power configuration in existing optical system is not
, easily make the back focal length of optical system long, be unfavorable for the miniaturization of optical system.Further, refracting power may be caused
Concentrations are an impediment to correct the aberration of optical system and reduce the susceptibility of optical system in single lens.
The content of the invention
It is an object of the invention to provide a kind of optical image taking system, image-taking device and electronic device, wherein optics takes
As the first lens, the second lens of the positive refracting power of tool and the 3rd lens for having negative refracting power that system includes the positive refracting power of tool, and
The refracting power of 3rd lens is strong compared with the first lens and the second lens.Whereby, the overall length of optical image taking system can effectively be shortened with after
Focal length.In addition, when meeting specified conditions, help to make the refracting power configuration of lens in optical image taking system more to balance, to repair
The aberration of positive optical image taking system, and reduce the susceptibility of optical image taking system.Furthermore the first lens object side surface and image side
Surface is all convex surface, can the first lens of active balance curvature distribution, it is too strong to help avoid the single surface curvature of the first lens,
To reduce the generation of optical image taking system aberration, and reduce difficult forming degree.
The present invention provides a kind of optical image taking system, by object side to image side sequentially comprising the first lens, the second lens and the
Three lens.First lens have positive refracting power, and object side surface is convex surface at dipped beam axis, and image side surface is at dipped beam axis
Convex surface, object side surface is all aspherical with image side surface, and the first lens are plastic cement material.Second lens have positive flexion
Power, object side surface are concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis, object side surface and image side surface
It is all aspherical, and the second lens are plastic cement material.3rd lens have negative refracting power, and image side surface is at dipped beam axis to be recessed
Face, place has an at least convex surface off axis on image side surface, and object side surface is all aspherical with image side surface, and the 3rd lens are
Plastic cement material.The lens for having refracting power in optical image taking system are three pieces.Optical image taking system further includes an aperture, and aperture is set
It is placed between the first lens image side surface and the second lens object side surface.The focal length of first lens be f1, the focal length of the second lens
For f2, the focal length of the 3rd lens is f3, and the first lens are CT1 in the thickness on optical axis, and the 3rd lens are in the thickness on optical axis
CT3, aperture to the 3rd lens image side surface in the distance on optical axis be SD, the first lens object side surface to the 3rd lens image side table
Face is TD in the distance on optical axis, meets following condition：
|f3|<f2<f1；
1.55<CT1/CT3；And
0.55<SD/TD<0.80。
The present invention a kind of optical image taking system is separately provided, by object side to image side sequentially comprising the first lens, the second lens and
3rd lens.First lens have positive refracting power, and object side surface is convex surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface, object side surface is all aspherical with image side surface, and the first lens are plastic cement material.Second lens have positive flexion
Power, object side surface are concave surface at dipped beam axis, and image side surface is convex surface at dipped beam axis, object side surface and image side surface
It is all aspherical, and the second lens are plastic cement material.3rd lens have negative refracting power, and image side surface is at dipped beam axis to be recessed
Face, place has an at least convex surface off axis on image side surface, and object side surface is all aspherical with image side surface, and the 3rd lens are
Plastic cement material.The lens for having refracting power in optical image taking system are three pieces.Optical image taking system further includes a filter element.First
At least one of which is made by absorption visible ray material in lens, the second lens, the 3rd lens and filter element.First lens
Focal length for f1, the focal length of the second lens is f2, and the focal length of the 3rd lens is f3, and the first lens are CT1 in the thickness on optical axis,
3rd lens are CT3 in the thickness on optical axis, meet following condition：
|f3|<f2<f1；And
1.25<CT1/CT3。
The present invention separately provides a kind of image-taking device, it includes foregoing optical image taking system and electronics photo-sensitive cell,
Middle electronics photo-sensitive cell is arranged on the imaging surface of optical image taking system.
The present invention separately provides a kind of electronic device, and it includes foregoing image-taking devices.
When | f3 |<f2<When f1 meets above-mentioned condition, help to make the refracting power configuration of lens in optical image taking system more
Balance, to correct the aberration of optical image taking system, and reduces the susceptibility of optical image taking system.
When CT1/CT3 meets above-mentioned condition, the thickness of the first lens and the 3rd lens is more suitable, and lens is contributed to exist
Homogenieity and mouldability during making.
When SD/TD meets above-mentioned condition, the Optical System Design of optical image taking system can be made in telecentricity
(Telecentric) with obtained in wide-angle characteristic it is well balanced.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Description of the drawings
Fig. 1 illustrates the image-taking device schematic diagram according to first embodiment of the invention；
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve figure of first embodiment from left to right；
Fig. 3 illustrates the image-taking device schematic diagram according to second embodiment of the invention；
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve figure of second embodiment from left to right；
Fig. 5 is the penetration rate spectrum of the 3rd lens of second embodiment；
Fig. 6 is the penetration rate spectrum of the first lens of second embodiment, the second lens and filter element；
Fig. 7 is the penetration rate spectrum of the optical image taking system of second embodiment；
Fig. 8 illustrates the image-taking device schematic diagram according to third embodiment of the invention；
Fig. 9 is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment from left to right；
Figure 10 illustrates the image-taking device schematic diagram according to fourth embodiment of the invention；
Figure 11 is sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment from left to right；
Figure 12 illustrates the image-taking device schematic diagram according to fifth embodiment of the invention；
Figure 13 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right；
Figure 14 illustrates the image-taking device schematic diagram according to sixth embodiment of the invention；
Figure 15 is sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right；
Figure 16 illustrates the image-taking device schematic diagram according to seventh embodiment of the invention；
Figure 17 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right；
Figure 18 illustrates the image-taking device schematic diagram according to eighth embodiment of the invention；
Figure 19 is sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right；
Figure 20 illustrates a kind of schematic diagram of electronic device according to the present invention；
Figure 21 illustrates the schematic diagram of another electronic device according to the present invention；
Figure 22 illustrates the schematic diagram of still another electronic device according to the present invention；
Figure 23 illustrates the schematic diagram of still another electronic device according to the present invention.
Wherein, reference numeral
Capture Zhuan Zhi ︰ 10
Guang Quan ︰ 100,200,300,400,500,600,700,800
First Tou Jing ︰ 110,210,310,410,510,610,710,810
Object Ce Biao Mian ︰ 111,211,311,411,511,611,711,811
As side surface ︰ 112,212,312,412,512,612,712,812
2nd saturating mirror ︰ 120,220,320,420,520,620,720,820
Object Ce Biao Mian ︰ 121,221,321,421,521,621,721,821
As side surface ︰ 122,222,322,422,522,622,722,822
San Tou Jing ︰ 130,230,330,430,530,630,730,830
Object Ce Biao Mian ︰ 131,231,331,431,531,631,731,831
As side surface ︰ 132,232,332,432,532,632,732,832
Filter optical element ︰ 140,240,340,440,540,640,740,840
Cheng Xiang Mian ︰ 150,250,350,450,550,650,750,850
Electronics photo-sensitive cell ︰ 160,260,360,460,560,660,760,860
CT1：First lens are in the thickness on optical axis
CT3：3rd lens are in the thickness on optical axis
EPD：The entrance pupil aperture of optical image taking system
f：The focal length of optical image taking system
f1：The focal length of first lens
f2：The focal length of second lens
f3：The focal length of 3rd lens
The f-number of Fno ︰ optical image taking systems
The half at maximum visual angle in HFOV ︰ optical image taking systems
N2：The refractive index of second lens
N3：The refractive index of 3rd lens
R2：The radius of curvature of first lens image side surface
SD：Aperture is to the 3rd lens image side surface in the distance on optical axis
T12：First lens and the second lens are in the spacing distance on optical axis
T23：Second lens and the 3rd lens are in the spacing distance on optical axis
TD：First lens object side surface to the 3rd lens image side surface is in the distance on optical axis
TL：First lens object side surface is to imaging surface in the distance on optical axis
V2：The abbe number of second lens
V3：The abbe number of 3rd lens
ΣCT：First lens, the second lens and the 3rd lens are in the summation of lens thickness on optical axis
Specific embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Optical image taking system sequentially includes the first lens, the second lens and the 3rd lens by object side to image side.Wherein, optics
The lens for having refracting power in image-taking system are three pieces.
First lens have positive refracting power, and object side surface is convex surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface.Whereby, it is possible to provide the positive refracting power needed for optical image taking system, and help suitably to adjust the total of optical image taking system
Length.Further, since the first lens object side surface and image side surface are all convex surface, can the first lens of active balance curvature point
Cloth, it is too strong to help avoid the single surface curvature of the first lens, to reduce the generation of optical image taking system aberration, and reduce into
Type degree of difficulty.
Second lens have positive refracting power, and object side surface is concave surface at dipped beam axis, and image side surface is at dipped beam axis
For convex surface.Whereby, the first lens and the second lens all have positive refracting power, help to be uniformly distributed the flexion of optical image taking system
Power, to reduce the susceptibility of optical image taking system.In addition, the back focal length of optical image taking system can be reduced effectively, make optical image-taking
System maintains miniaturization.
3rd lens have negative refracting power, and object side surface can be concave surface at dipped beam axis, and image side surface is in dipped beam axis
Locate as concave surface, image side surface has an at least convex surface in off-axis place.Whereby, the first lens of optical image taking system, second thoroughly
Mirror and the 3rd lens forming positive-negative structure, and the refracting power of the 3rd lens is strong compared with the first lens and the second lens, it can be effective
Shorten the overall length and back focal length of optical image taking system.In addition, the light that can suppress off-axis visual field is incident on electronics photo-sensitive cell
Angle, to increase the receiving efficiency of electronics photo-sensitive cell, the aberration of further modified off-axis visual field.
The focal length of first lens is f1, and the focal length of the second lens is f2, and the focal length of the 3rd lens is f3, meets following item
Part：|f3|<f2<f1.Whereby, contributing to, which configures the refracting power of lens in optical image taking system, more balances, to correct optics
The aberration of image-taking system, and reduce the susceptibility of optical image taking system.
First lens are CT1 in the thickness on optical axis, and the 3rd lens are CT3 in the thickness on optical axis, meet following item
Part：1.25<CT1/CT3.Whereby, the thickness of the first lens and the 3rd lens is more suitable, contributes to lens equal when making
Matter and mouldability.It is preferred that it meets following condition：1.55<CT1/CT3.More preferably, following condition is met：1.80<
CT1/CT3<4.50.Again more preferably, following condition is met：2.40<CT1/CT3<3.50.
Optical image taking system further includes an aperture.Aperture to the 3rd lens image side surface in the distance on optical axis be SD, the
One lens object side surface to the 3rd lens image side surface is TD in the distance on optical axis, meets following condition：0.55<SD/TD<
0.80.Whereby, the Optical System Design that can make optical image taking system is good with being obtained in wide-angle characteristic in telecentricity (Telecentric)
Good balance.
First lens and the second lens are T12 in the spacing distance on optical axis, and the second lens and the 3rd lens are on optical axis
Spacing distance for T23, meet following condition：2.5<T12/T23.Whereby, the spacing between each lens can be suitably adjusted, is helped
In the total length for shortening optical image taking system, to maintain its miniaturization.
First lens, the second lens and the 3rd lens are Σ CT (as the first lens in the summation of lens thickness on optical axis
In on optical axis thickness, the second lens in the thickness on optical axis and the 3rd lens in the summation of the thickness on optical axis), the first lens
It is CT1 in the thickness on optical axis, meets following condition：1.40<ΣCT/CT1<2.60.Whereby, lens can be avoided excessively thin or mistake
Thickness, is conducive to maintain the miniaturization of optical image taking system, while promotes making yield.
The abbe number of second lens is V2, and the abbe number of the 3rd lens is V3, meets following condition：0.80<V2/
V3<1.33.Whereby, the selection of plastic lens material in optical image taking system can be made more to match, in favor of improving optical capture
The image quality of system.
First lens object side surface to the 3rd lens image side surface is TD in the distance on optical axis, meets following condition：
TD<2.25mm (millimeter).Whereby, the miniaturization of optical image taking system is conducive to, it is excessive to avoid optical image taking system volume, make
Optical image taking system is more suitably applied to electronic device.
The abbe number of second lens is V2, and the abbe number of the 3rd lens is V3, meets following condition：V2+V3<
70.Whereby, the selection of plastic lens material in optical image taking system can be made more to match, in favor of improving optical image-taking system
Image quality.
The refractive index of second lens is N2, and the refractive index of the 3rd lens is N3, meets following condition：3.00<N2+N3<
3.40.Whereby, the refractive index of the second lens and the 3rd lens is more suitable, is conducive to correct the aberration of optical image taking system, together
When maintain good image quality.
First lens object side surface is TL in the distance on optical axis to imaging surface, and the entrance pupil aperture of optical image taking system is
EPD meets following condition：1.0<TL/EPD<3.4.Whereby, the light-inletting quantity of optical image taking system can be increased, be conducive to be promoted
Capture photoperceptivity under low lighting environment.
The focal length of first lens is f1, and the focal length of the second lens is f2, and the focal length of the 3rd lens is f3, meets following item
Part：1.25<(|f3|/f2)+(f2/f1)<1.85.Whereby, can balance optical image-taking system refracting power configuration, to avoid aberration
It excessively generates, while can effectively reduce the susceptibility of optical image taking system.
The focal length of first lens is f1, and the radius of curvature on the first lens image side surface is R2, meets following condition：-1.5
<f1/R2<0.Whereby, the curvature on the first lens image side surface is appropriate, helps to shorten the total length of optical image taking system.
The optical image taking system of the present invention can be used in 750 nanometers of wavelength (nm) into 1050 nanometers of wave band.Whereby, may be used
Infrared wavelength range light is effectively captured, it is each to be suitable for the detection of dynamic body-sensing, the shooting of low light source or iris device for identifying etc.
Formula infrared photography application.
Optical image taking system further includes a filter element.In first lens, the second lens, the 3rd lens and filter element extremely
One of them can be to absorb made by visible ray material less.It is, for example, to contaminate black plastics to absorb visible ray material.Whereby, optical image-taking
System optionally by lens or optical filter to absorb the making of visible ray material, make lens or optical filter can effectively reduce it is visible
The penetrance of optical band light source, to reduce influence of the visible light wave range to image quality.
The configuration of aperture puts aperture in being in optical image taking system.In put aperture represent aperture be arranged at the first lens with
Between imaging surface, help to provide optical image taking system enough field angles.
The invention discloses optical image taking system in, the material of lens can be plastic cement or glass.When the material of lens is glass
Glass can increase the degree of freedom of refracting power configuration.It is plastic cement separately to work as lens material, then can effectively reduce production cost.In addition,
It can be in being set on lens surface aspherical (ASP), the aspherical shape that can be easily fabricated to beyond spherical surface obtains more control
Parameter processed to cut down aberration, and then reduces the required number using lens, therefore can effectively reduce optics total length.
The invention discloses optical image taking system in, if lens surface for convex surface and when not defining the convex surface position, table
It is convex surface at dipped beam axis to show the lens surface；If lens surface is for concave surface and when not defining the concave surface position, then it represents that this is thoroughly
Mirror surface is concave surface at dipped beam axis.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 are refracting power or focal length of the lens at dipped beam axis.
The invention discloses optical image taking system in, the imaging surface (Image Surface) of optical image taking system is right according to its
The difference for the electronics photo-sensitive cell answered can be a plane or have the curved surface of any curvature, particularly relate to concave surface towards past object side direction
Curved surface.
The invention discloses optical image taking system in, may be provided with an at least diaphragm, position may be disposed at the first lens
Before, between each lens or after last lens, the species such as light diaphragm (Glare Stop) or the visual field of shining of the diaphragm
Diaphragm (Field Stop) etc. to reduce stray light, helps to promote image quality.
The present invention more provides a kind of image-taking device, it includes aforementioned optical image-taking system and electronics photo-sensitive cell, wherein
Electronics photo-sensitive cell is arranged on the imaging surface of optical image taking system.It is preferred that the image-taking device can further include lens barrel
(Barrel Member), device (Holder Member) or its combination are supported.
Figure 20, Figure 21, Figure 22 and Figure 23 are refer to, image-taking device 10 many-sided can be applied to intelligent mobile phone (such as Figure 20
It is shown), tablet computer (as shown in figure 21), wearable device (as shown in figure 22) and infrared photographic device be (such as Figure 23 institutes
Show) etc..It is preferred that electronic device 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 image taking system of the present invention is applied in the optical system of mobile focusing, and has both excellent picture
Difference corrects the characteristic with good image quality.The present invention many-sided can also be applied to three-dimensional (3D) image capture, digital camera, shifting
Dynamic device, tablet computer, intelligent electric regard, network monitoring device, drive recorder, reversing developing apparatus, somatic sensation television game machine
With in the electronic devices such as wearable device.The optical image taking system of the present invention can also be applied to carry the electronics of infrared ray camera lens
Device, such as the detection of dynamic body-sensing, the shooting of low light source or iris device for identifying need electronic device that infrared ray is avoided to disturb etc..
Furthermore, it is understood that the optical image taking system of the present invention can be used in the wave band of 750 nanometers to 1050 nanometers of wavelength, but this wave band
Scope is not to limit the present invention.Before take off electronic device 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 the above embodiment, specific embodiment set forth below simultaneously coordinates attached drawing to be described in detail.
<First embodiment>
Refer to Fig. 1 and Fig. 2, wherein Fig. 1 illustrates the image-taking device schematic diagram according to first embodiment of the 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 takes comprising optics
As system (not another label) and electronics photo-sensitive cell 160.Optical image taking system sequentially includes the first lens by object side to image side
110th, aperture 100, the second lens 120, the 3rd lens 130, filter element (Filter) 140 and imaging surface 150.Wherein, electronics
Photo-sensitive cell 160 is arranged on imaging surface 150.The lens for having refracting power in optical image taking system are three pieces (110-130).
First lens 110 have positive refracting power, and are plastic cement material, and object side surface 111 is convex surface at dipped beam axis,
Image side surface 112 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 120 have positive refracting power, and are plastic cement material, and object side surface 121 is concave surface at dipped beam axis,
Image side surface 122 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 130 have negative refracting power, and are plastic cement material, and object side surface 131 is concave surface at dipped beam axis,
Image side surface 132 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 132 has at least in off-axis place
One convex surface.
The material of filter element 140 is glass, is arranged between the 3rd lens 130 and imaging surface 150, has no effect on light
Learn the focal length of image-taking system.
The aspherical fitting equation of above-mentioned each lens represents as follows：
；Wherein：
X：Apart from the point that optical axis is Y on aspherical, the relative distance with being tangential on the section of intersection point on aspherical optical axis；
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 image taking system of first embodiment, the focal length of optical image taking system is f, the f-number of optical image taking system
(F-number) it is Fno, the half at maximum visual angle is HFOV in optical image taking system, and numerical value is as follows：F=2.12mm (millis
Rice), Fno=2.85, HFOV=31.3 degree (deg.).
The refractive index of second lens 120 is N2, and the refractive index of the 3rd lens 130 is N3, meets following condition：N2+N3
=3.222.
The abbe number of second lens 120 is V2, and the abbe number of the 3rd lens 130 is V3, meets following condition：V2
+ V3=53.70.
The abbe number of second lens 120 is V2, and the abbe number of the 3rd lens 130 is V3, meets following condition：
V2/V3=1.29.
First lens 110 are CT1 in the thickness on optical axis, and the 3rd lens 130 are CT3 in the thickness on optical axis, are met
Following condition：CT1/CT3=2.02.
First lens 110, the second lens 120 and the 3rd lens 130 are Σ CT respectively at the summation of lens thickness on optical axis,
First lens 110 are CT1 in the thickness on optical axis, meet following condition：Σ CT/CT1=2.66.
First lens 110 and the second lens 120 are T12, the second lens 120 and the 3rd lens in the spacing distance on optical axis
130 in the spacing distance on optical axis be T23, meet following condition：T12/T23=4.83.
The focal length of first lens 110 is f1, and the radius of curvature on the first lens image side surface 112 is R2, meets following item
Part：F1/R2=-0.34.
The focal length of first lens 110 is f1, and the focal length of the second lens 120 is f2, and the focal length of the 3rd lens 130 is f3,
Meet following condition：(| f3 |/f2)+(f2/f1)=1.41.
First lens object side surface, 111 to the 3rd lens image side surface 132 is TD in the distance on optical axis, is met following
Condition：TD=2.05mm.
100 to the 3rd lens image side surface 132 of aperture in the distance on optical axis be SD, the first lens object side surface 111 to
3rd lens image side surface 132 is TD in the distance on optical axis, meets following condition：SD/TD=0.66.
First lens object side surface 111 is TL in the distance on optical axis to imaging surface 150, and optical image taking system enters pupil
Footpath is EPD, meets following condition：TL/EPD=3.87.
Cooperation is with reference to following table one and table two.
Table one is the detailed structured data of Fig. 1 first embodiments, and the wherein unit of radius of curvature, thickness and focal length is millimeter
(mm), and surface 0 to 10 is sequentially represented by the surface of object side to image side.Table two is the aspherical surface data in first embodiment,
In, k is the conical surface coefficient in aspheric curve equation, and A4 to A16 then represents each the 4 to 16th rank asphericity coefficient of surface.This
Outside, following embodiment form is schematic diagram and the aberration curve figure of corresponding each embodiment, and the definition of data is all with the in form
The definition of the table one and table two of one embodiment is identical, and not in this to go forth.
<Second embodiment>
Refer to Fig. 3 and Fig. 4, wherein Fig. 3 illustrates the image-taking device schematic diagram according to second embodiment of the 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 takes comprising optics
As system (not another label) and electronics photo-sensitive cell 260.Optical image taking system sequentially includes the first lens by object side to image side
210th, aperture 200, the second lens 220, the 3rd lens 230, filter element 240 and imaging surface 250.Wherein, electronics photo-sensitive cell
260 are arranged on imaging surface 250.The lens for having refracting power in optical image taking system are three pieces (210-230).
First lens 210 have positive refracting power, and are plastic cement material, and object side surface 211 is convex surface at dipped beam axis,
Image side surface 212 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 220 have positive refracting power, and are plastic cement material, and object side surface 221 is concave surface at dipped beam axis,
Image side surface 222 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 230 have negative refracting power, and are plastic cement material, and object side surface 231 is concave surface at dipped beam axis,
Image side surface 232 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 232 has at least in off-axis place
One convex surface.
The material of filter element 240 is glass, is arranged between the 3rd lens 230 and imaging surface 250, has no effect on light
Learn the focal length of image-taking system.
In a second embodiment, the 3rd lens 230 is absorb made by visible ray material, and the first lens 210, second are thoroughly
Mirror 220 and filter element 240 are made by non-absorbing visible ray material.Whereby, the 3rd lens 230 can effectively reduce visible light wave
The penetrance of Duan Guangyuan.Furthermore, in a second embodiment, the 3rd lens 230 made of absorption visible ray material can be inhaled
The wave band (i.e. visible light wave range) of wavelength 400nm~700nm is received, and the penetrance of visible light wave range is made to be less than 50%.Whereby, light
Learn the wave band that image-taking system is suitable for wavelength about 810nm.It refer to Fig. 5, Fig. 6 and Fig. 7.Fig. 5 be second embodiment the 3rd thoroughly
The penetration rate spectrum of mirror.Fig. 6 is the penetrance of the first lens of second embodiment, the second lens and filter element
Spectrum.Fig. 7 is the penetration rate spectrum of the optical image taking system of second embodiment.
It please coordinate with reference to following table three and table four.
In second embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<3rd embodiment>
Refer to Fig. 8 and Fig. 9, wherein Fig. 8 illustrates the image-taking device schematic diagram according to third embodiment of the invention, Fig. 9 by
Left-to-right is sequentially spherical aberration, astigmatism and the distortion curve figure of 3rd embodiment.As shown in Figure 8, image-taking device takes comprising optics
As system (not another label) and electronics photo-sensitive cell 360.Optical image taking system sequentially includes the first lens by object side to image side
310th, aperture 300, the second lens 320, the 3rd lens 330, filter element 340 and imaging surface 350.Wherein, electronics photo-sensitive cell
360 are arranged on imaging surface 350.The lens for having refracting power in optical image taking system are three pieces (310-330).
First lens 310 have positive refracting power, and are plastic cement material, and object side surface 311 is convex surface at dipped beam axis,
Image side surface 312 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 320 have positive refracting power, and are plastic cement material, and object side surface 321 is concave surface at dipped beam axis,
Image side surface 322 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 330 have negative refracting power, and are plastic cement material, and object side surface 331 is convex surface at dipped beam axis,
Image side surface 332 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 332 has at least in off-axis place
One convex surface.
The material of filter element 340 is glass, is arranged between the 3rd lens 330 and imaging surface 350, has no effect on light
Learn the focal length of image-taking system.
It please coordinate with reference to following table five and table six.
In 3rd embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Fourth embodiment>
Figure 10 and Figure 11 is refer to, wherein Figure 10 illustrates the image-taking device schematic diagram according to fourth embodiment of the invention, figure
11 be sequentially spherical aberration, astigmatism and the distortion curve figure of fourth embodiment from left to right.As shown in Figure 10, image-taking device includes light
Learn image-taking system (not another label) and electronics photo-sensitive cell 460.Optical image taking system is sequentially saturating comprising first by object side to image side
Mirror 410, aperture 400, the second lens 420, the 3rd lens 430, filter element 440 and imaging surface 450.Wherein, the photosensitive member of electronics
Part 460 is arranged on imaging surface 450.The lens for having refracting power in optical image taking system are three pieces (410-430).
First lens 410 have positive refracting power, and are plastic cement material, and object side surface 411 is convex surface at dipped beam axis,
Image side surface 412 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 420 have positive refracting power, and are plastic cement material, and object side surface 421 is concave surface at dipped beam axis,
Image side surface 422 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 430 have negative refracting power, and are plastic cement material, and object side surface 431 is concave surface at dipped beam axis,
Image side surface 432 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 432 has at least in off-axis place
One convex surface.
The material of filter element 440 is glass, is arranged between the 3rd lens 430 and imaging surface 450, has no effect on light
Learn the focal length of image-taking system.
It please coordinate with reference to following table seven and table eight.
In fourth embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<5th embodiment>
Figure 12 and Figure 13 is refer to, wherein Figure 12 illustrates the image-taking device schematic diagram according to fifth embodiment of the invention, figure
13 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 5th embodiment from left to right.As shown in Figure 12, image-taking device includes light
Learn image-taking system (not another label) and electronics photo-sensitive cell 560.Optical image taking system is sequentially saturating comprising first by object side to image side
Mirror 510, aperture 500, the second lens 520, the 3rd lens 530, filter element 540 and imaging surface 550.Wherein, the photosensitive member of electronics
Part 560 is arranged on imaging surface 550.The lens for having refracting power in optical image taking system are three pieces (510-530).
First lens 510 have positive refracting power, and are plastic cement material, and object side surface 511 is convex surface at dipped beam axis,
Image side surface 512 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 520 have positive refracting power, and are plastic cement material, and object side surface 521 is concave surface at dipped beam axis,
Image side surface 522 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 530 have negative refracting power, and are plastic cement material, and object side surface 531 is convex surface at dipped beam axis,
Image side surface 532 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 532 has at least in off-axis place
One convex surface.
The material of filter element 540 is glass, is arranged between the 3rd lens 530 and imaging surface 550, has no effect on light
Learn the focal length of image-taking system.
In the 5th embodiment, the first lens 510 is absorb made by visible ray material, and the second lens the 520, the 3rd are thoroughly
Mirror 530 and filter element 540 are made by non-absorbing visible ray material.Whereby, the first lens 510 can absorb wavelength 400nm~
The wave band (i.e. visible light wave range) of 700nm, and make wave band of the optical image taking system suitable for wavelength about 810nm.
It please coordinate with reference to following table nine and table ten.
In 5th embodiment, aspherical fitting equation represents the form such as first embodiment.In addition, described in following table
Definition is all identical with first embodiment, and not in this to go forth.
<Sixth embodiment>
Figure 14 and Figure 15 is refer to, wherein Figure 14 illustrates the image-taking device schematic diagram according to sixth embodiment of the invention, figure
15 be sequentially spherical aberration, astigmatism and the distortion curve figure of sixth embodiment from left to right.As shown in Figure 14, image-taking device includes light
Learn image-taking system (not another label) and electronics photo-sensitive cell 660.Optical image taking system is sequentially saturating comprising first by object side to image side
Mirror 610, aperture 600, the second lens 620, the 3rd lens 630, filter element 640 and imaging surface 650.Wherein, the photosensitive member of electronics
Part 660 is arranged on imaging surface 650.The lens for having refracting power in optical image taking system are three pieces (610-630).
First lens 610 have positive refracting power, and are plastic cement material, and object side surface 611 is convex surface at dipped beam axis,
Image side surface 612 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 620 have positive refracting power, and are plastic cement material, and object side surface 621 is concave surface at dipped beam axis,
Image side surface 622 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 630 have negative refracting power, and are plastic cement material, and object side surface 631 is convex surface at dipped beam axis,
Image side surface 632 is concave surface at dipped beam axis, and two surfaces are all that its aspherical image side surface 632 has at least one in off-axis place
Convex surface.
The material of filter element 640 is glass, is arranged between the 3rd lens 630 and imaging surface 650, has no effect on light
Learn the focal length of image-taking system.
In the sixth embodiment, the first lens 610 is absorb made by visible ray material, and the second lens the 620, the 3rd are thoroughly
Mirror 630 and filter element 640 are made by non-absorbing visible ray material.Whereby, the first lens 610 can absorb wavelength 400nm~
The wave band (i.e. visible light wave range) of 700nm, and make wave band of the optical image taking system suitable for wavelength about 810nm.
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 16 and Figure 17 is refer to, wherein Figure 16 illustrates the image-taking device schematic diagram according to seventh embodiment of the invention, figure
17 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 7th embodiment from left to right.As shown in Figure 16, image-taking device includes light
Learn image-taking system (not another label) and electronics photo-sensitive cell 760.Optical image taking system is sequentially saturating comprising first by object side to image side
Mirror 710, aperture 700, the second lens 720, the 3rd lens 730, filter element 740 and imaging surface 750.Wherein, the photosensitive member of electronics
Part 760 is arranged on imaging surface 750.The lens for having refracting power in optical image taking system are three pieces (710-730).
First lens 710 have positive refracting power, and are plastic cement material, and object side surface 711 is convex surface at dipped beam axis,
Image side surface 712 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 720 have positive refracting power, and are plastic cement material, and object side surface 721 is concave surface at dipped beam axis,
Image side surface 722 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 730 have negative refracting power, and are plastic cement material, and object side surface 731 is convex surface at dipped beam axis,
Image side surface 732 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 732 has at least in off-axis place
One convex surface.
The material of filter element 740 is glass, is arranged between the 3rd lens 730 and imaging surface 750, has no effect on light
Learn the focal length of image-taking system.
In the seventh embodiment, the second lens 720 is absorb made by visible ray material, and the first lens the 710, the 3rd are thoroughly
Mirror 730 and filter element 740 are made by non-absorbing visible ray material.Whereby, the second lens 720 can absorb wavelength 400nm~
The wave band (i.e. visible light wave range) of 700nm, and make wave band of the optical image taking system suitable for wavelength about 810nm.
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 18 and Figure 19 is refer to, wherein Figure 18 illustrates the image-taking device schematic diagram according to eighth embodiment of the invention, figure
19 be sequentially spherical aberration, astigmatism and the distortion curve figure of the 8th embodiment from left to right.As shown in Figure 18, image-taking device includes light
Learn image-taking system (not another label) and electronics photo-sensitive cell 860.Optical image taking system is sequentially saturating comprising first by object side to image side
Mirror 810, aperture 800, the second lens 820, the 3rd lens 830, filter element 840 and imaging surface 850.Wherein, the photosensitive member of electronics
Part 860 is arranged on imaging surface 850.The lens for having refracting power in optical image taking system are three pieces (810-830).
First lens 810 have positive refracting power, and are plastic cement material, and object side surface 811 is convex surface at dipped beam axis,
Image side surface 812 is convex surface at dipped beam axis, and two surfaces are all aspherical.
Second lens 820 have positive refracting power, and are plastic cement material, and object side surface 821 is concave surface at dipped beam axis,
Image side surface 822 is convex surface at dipped beam axis, and two surfaces are all aspherical.
3rd lens 830 have negative refracting power, and are plastic cement material, and object side surface 831 is convex surface at dipped beam axis,
Image side surface 832 is concave surface at dipped beam axis, and two surfaces are all aspherical, and image side surface 832 has at least in off-axis place
One convex surface.
The material of filter element 840 is plastic cement, is arranged between the 3rd lens 830 and imaging surface 850, has no effect on light
Learn the focal length of image-taking system.
In the eighth embodiment, filter element 840 is absorbs made by visible ray material, and the first lens 810, second are thoroughly
820 and the 3rd lens 830 of mirror are made by non-absorbing visible ray material.Whereby, filter element 840 can absorb wavelength 400nm~
The wave band (i.e. visible light wave range) of 700nm, and make wave band of the optical image taking system suitable for wavelength about 810nm.
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.
Above-mentioned image-taking device can be equipped in electronic device.The present invention has the optical image-taking system of refracting power lens using three pieces
System, wherein optical image taking system include the first lens for having positive refracting power, the second lens of the positive refracting power of tool and the negative refracting power of tool
The 3rd lens, and the refracting power of the 3rd lens is strong compared with the first lens and the second lens.Whereby, optical image-taking system can effectively be shortened
The overall length and back focal length of system.In addition, when meeting specified conditions, help to make the refracting power configurations of lens in optical image taking system compared with
For balance, to correct the aberration of optical image taking system, and the susceptibility of optical image taking system is reduced.Furthermore the first lens object
Side surface and image side surface are all convex surface, can the first lens of active balance curvature distribution, it is single to help avoid the first lens
Surface curvature is too strong, to reduce the generation of optical image taking system aberration, and reduces difficult forming degree.
Although the present invention has been disclosed by way of example above, it is not intended to limit the present invention..It is any to be familiar with this those skilled in the art,
Without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Therefore protection scope of the present invention is worked as and is regarded
Subject to scope defined in the attached claims.
Claims (24)
1. a kind of optical image taking system, which is characterized in that sequentially included by object side to image side：
One first lens have positive refracting power, and object side surface is convex surface at dipped beam axis, and image side surface is at dipped beam axis
Convex surface, object side surface are all aspherical with image side surface, and first lens are plastic cement material；
One second lens have positive refracting power, and object side surface is concave surface at dipped beam axis, and image side surface is at dipped beam axis
Convex surface, object side surface are all aspherical with image side surface, and second lens are plastic cement material；And
One the 3rd lens have negative refracting power, and image side surface is concave surface at dipped beam axis, and place has extremely off axis on image side surface
A few convex surface, object side surface is all aspherical with image side surface, and the 3rd lens are plastic cement material；
Wherein, have the lens of refracting power in the optical image taking system for first lens, second lens and the 3rd lens, it should
Optical image taking system further includes an aperture, and the aperture is arranged at the first lens image side surface and the second lens object side surface
Between；
Wherein, the focal length of first lens is f1, and the focal lengths of second lens is f2, and the focal length of the 3rd lens is f3, this
One lens in the thickness on optical axis be CT1, the 3rd lens in the thickness on optical axis be CT3, the aperture to the 3rd lens picture
Side surface is SD in the distance on optical axis, and the first lens object side surface to the 3rd lens image side surface is in the distance on optical axis
For TD, the refractive index of second lens is N2, and the refractive index of the 3rd lens is N3, meets following condition：
|f3|<f2<f1；
1.55<CT1/CT3；
0.55<SD/TD<0.80；And
3.00<N2+N3<3.40。
2. optical image taking system according to claim 1, which is characterized in that first lens are with second lens in optical axis
On spacing distance for T12, which is T23 in the spacing distance on optical axis with the 3rd lens, meets following item
Part：
2.5<T12/T23。
3. optical image taking system according to claim 2, which is characterized in that first lens are in the thickness on optical axis
CT1, the 3rd lens are CT3 in the thickness on optical axis, meet following condition：
1.80<CT1/CT3<4.50。
4. optical image taking system according to claim 2, which is characterized in that first lens, second lens and this
Three lens are Σ CT in the summation of lens thickness on optical axis, which is CT1 in the thickness on optical axis, meets following item
Part：
1.40<ΣCT/CT1<2.60。
5. optical image taking system according to claim 1, which is characterized in that first lens are in the thickness on optical axis
CT1, the 3rd lens are CT3 in the thickness on optical axis, meet following condition：
2.40<CT1/CT3<3.50。
6. optical image taking system according to claim 1, which is characterized in that the 3rd lens object side surface is at dipped beam axis
For concave surface.
7. optical image taking system according to claim 1, which is characterized in that the abbe number of second lens is V2, should
The abbe number of 3rd lens is V3, meets following condition：
0.80<V2/V3<1.33。
8. optical image taking system according to claim 1, which is characterized in that the first lens object side surface to the 3rd is thoroughly
Mirror image side surface is TD in the distance on optical axis, meets following condition：
TD<2.25mm。
9. optical image taking system according to claim 1, which is characterized in that the abbe number of second lens is V2, should
The abbe number of 3rd lens is V3, meets following condition：
V2+V3<70。
10. optical image taking system according to claim 1, which is characterized in that the first lens object side surface a to imaging
Face is TL in the distance on optical axis, and the entrance pupil aperture of the optical image taking system is EPD, meets following condition：
1.0<TL/EPD<3.4。
11. optical image taking system according to claim 1, which is characterized in that the focal length of first lens is f1, this second
The focal length of lens is f2, and the focal length of the 3rd lens is f3, meets following condition：
1.25<(|f3|/f2)+(f2/f1)<1.85。
12. optical image taking system according to claim 11, which is characterized in that the focal length of first lens is f1, this
The radius of curvature of one lens image side surface is R2, meets following condition：
-1.5<f1/R2<0。
13. optical image taking system according to claim 1, which is characterized in that the optical image taking system is used in wavelength 750
Nanometer is into 1050 nanometers of wave band.
14. optical image taking system according to claim 1, which is characterized in that further include a filter element, wherein this first
At least one of which is made by absorption visible ray material in lens, second lens, the 3rd lens and the filter element.
15. a kind of image-taking device, which is characterized in that include：
Optical image taking system as described in claim 1；And
One electronics photo-sensitive cell, wherein the electronics photo-sensitive cell are arranged on an imaging surface of the optical image taking system.
16. a kind of electronic device, which is characterized in that include：
Image-taking device as claimed in claim 15.
17. a kind of optical image taking system, which is characterized in that sequentially included by object side to image side：
One first lens have positive refracting power, and object side surface is convex surface at dipped beam axis, and image side surface is at dipped beam axis
Convex surface, object side surface are all aspherical with image side surface, and first lens are plastic cement material；
One second lens have positive refracting power, and object side surface is concave surface at dipped beam axis, and image side surface is at dipped beam axis
Convex surface, object side surface are all aspherical with image side surface, and second lens are plastic cement material；And
One the 3rd lens have negative refracting power, and image side surface is concave surface at dipped beam axis, and place has extremely off axis on image side surface
A few convex surface, object side surface is all aspherical with image side surface, and the 3rd lens are plastic cement material；
Wherein, have the lens of refracting power in the optical image taking system for first lens, second lens and the 3rd lens, it should
Optical image taking system further includes a filter element, and in first lens, second lens, the 3rd lens and the filter element
At least one of which is made by absorption visible ray material；
Wherein, the focal length of first lens is f1, and the focal lengths of second lens is f2, and the focal length of the 3rd lens is f3, this
One lens are CT1 in the thickness on optical axis, and the 3rd lens are CT3 in the thickness on optical axis, and the refractive index of second lens is
N2, the refractive index of the 3rd lens is N3, meets following condition：
|f3|<f2<f1；
1.25<CT1/CT3；And
3.00<N2+N3<3.40。
18. optical image taking system according to claim 17, which is characterized in that first lens are in the thickness on optical axis
CT1, the 3rd lens are CT3 in the thickness on optical axis, meet following condition：
1.55<CT1/CT3。
19. optical image taking system according to claim 17, which is characterized in that the first lens object side surface to the 3rd
Lens image side surface is TD in the distance on optical axis, meets following condition：
TD<2.25mm。
20. optical image taking system according to claim 17, which is characterized in that the abbe number of second lens is V2,
The abbe number of 3rd lens is V3, meets following condition：
V2+V3<70。
21. optical image taking system according to claim 17, which is characterized in that the first lens object side surface a to imaging
Face is TL in the distance on optical axis, and the entrance pupil aperture of the optical image taking system is EPD, meets following condition：
1.0<TL/EPD<3.4。
22. optical image taking system according to claim 17, which is characterized in that first lens, second lens are with being somebody's turn to do
3rd lens are Σ CT in the summation of lens thickness on optical axis, which is CT1 in the thickness on optical axis, is met following
Condition：
1.40<ΣCT/CT1<2.60。
23. a kind of image-taking device, which is characterized in that include：
Optical image taking system as claimed in claim 17；And
One electronics photo-sensitive cell, wherein the electronics photo-sensitive cell are arranged on an imaging surface of the optical image taking system.
24. a kind of electronic device, which is characterized in that include：
Image-taking device as claimed in claim 23.
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| CN109828346B (en) * | 2018-12-26 | 2024-04-02 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN113484976A (en) * | 2020-11-04 | 2021-10-08 | 浙江舜宇光学有限公司 | Camera lens |
| WO2022236732A1 (en) * | 2021-05-12 | 2022-11-17 | 欧菲光集团股份有限公司 | Infrared optical system, infrared receiving module, and electronic device |
| CN113296236B (en) * | 2021-05-12 | 2022-08-30 | 江西晶超光学有限公司 | Infrared optical system, infrared receiving module and electronic equipment |
| CN116381908B (en) * | 2022-12-29 | 2024-05-07 | 湖北华鑫光电有限公司 | Miniaturized 3p wide-angle lens |
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| CN1627118A (en) * | 2003-12-12 | 2005-06-15 | 里程碑株式会社 | Imaging lens |
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