CN109683292A - Imagery optical system, image-taking device and electronic device - Google Patents
Imagery optical system, image-taking device and electronic device Download PDFInfo
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Abstract
The invention discloses a kind of imagery optical system, image-taking device and electronic devices.Imagery optical system sequentially includes the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens by object side to image side.First lens have positive refracting power, are convex surface at the dipped beam axis of object side surface.It is concave surface at the dipped beam axis of the third lens image side surface.It is concave surface at 4th lens image side surface dipped beam axis.5th lens have positive refracting power.6th lens have negative refracting power, are concave surface at the dipped beam axis of image side surface, image side surface is located off axis comprising an at least convex surface, and its object side surface and image side surface are all aspherical.When a specific condition is satisfied, the miniaturization of imagery optical system can be maintained, the characteristics of to have both short overall length under the configuration needs at large aperture Yu big visual angle.Invention additionally discloses the image-taking device with above-mentioned imagery optical system and with the electronic device of image-taking device.
Description
The application be on 09 30th, 2015 the applying date, application No. is 201510638188.7, entitled " imaging
With optical system, image-taking device and electronic device " patent application divisional application.
Technical field
The invention relates to a kind of imagery optical system and image-taking devices, and apply in particular to a kind of in electricity
Miniaturization imagery optical system and image-taking device in sub-device.
Background technique
In recent years, with the rise of the electronic product with camera function, the demand of optical system is increasingly improved.General light
The photosensitive element of system is nothing more than being photosensitive coupling element (Charge Coupled Device, CCD) or complementary gold oxide
Belong to two kinds of semiconductor element (Complementary Metal-Oxide Semiconductor Sensor, CMOS Sensor),
And progressing greatly with manufacture of semiconductor technology, so that the Pixel Dimensions of photosensitive element reduce, optical system is gradually led toward high pixel
Domain development, therefore the requirement to image quality also increasingly increases.
Tradition is equipped on the optical system on electronic product and mostly uses four or five chip lens arrangements, and in smart phone
With the high standards mobile device such as portable apparatus it is prevailing under, highlighted the lightening demand of electronic product, what is carried takes the photograph
As camera lens also gradually develops towards toward large aperture, short overall length.However known optical system is due to being not easy to have both large aperture and short total
Long demand, therefore, it is difficult to be equipped on frivolous electronic device.
Though making further progress six chip optical systems at present, in product towards the same of large aperture and Miniaturization Design
When, often cause its image quality that can not reach demand due to its excessively high stray light.
Summary of the invention
The present invention provides a kind of imagery optical system, image-taking device and electronic device, passes through the third lens image side surface
It is all concave surface with the 4th lens image side surface, the variation of the third lens Yu the 4th lens integral face shape can be slowed down, be effectively reduced miscellaneous
The generation of astigmatism, to have both good image quality and manufacturing.Furthermore the miniaturization of imagery optical system can be also maintained,
The characteristics of to have both short overall length under the configuration needs at large aperture Yu big visual angle.
A kind of imagery optical system is provided according to the present invention, by object side to image side sequentially include the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens and the 6th lens.First lens have positive refracting power, object side surface dipped beam
It is convex surface at axis.It is concave surface at the dipped beam axis of the third lens image side surface.It is concave surface at 4th lens image side surface dipped beam axis.5th
Lens have positive refracting power.6th lens have negative refracting power, are concave surface at the dipped beam axis of image side surface, image side surface is off-axis
Place includes an at least convex surface, and its object side surface and image side surface are all aspherical.The lens sum of imagery optical system is
Six, appointing between two adjacent lens all has a air gap, and the focal lengths of the first lens is f1, and the focal length of the third lens is f3,
The focal length of 4th lens is f4, and the focal length of the 5th lens is f5, and the focal length of the 6th lens is f6, and | f3 | and | f4 | be all greater than |
F1 |, | f5 | and | f6 |, the first lens object side surface to the 6th lens image side surface is Td in the distance on optical axis, and imaging is used up
The maximum image height of system is ImgH, and the abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, and imaging is used up
The focal length of system is f, and the entrance pupil diameter of imagery optical system is EPD, meets following condition:
Td/ImgH<1.25；
1.5<V3/V4<4.0；
|f/f3|+|f/f4|≤0.28；And
1.25<ImgH/EPD<1.75。
A kind of image-taking device is more provided according to the present invention, includes imagery optical system and sense electronics as mentioned in the previous paragraph
Optical element, wherein electronics photosensitive element is set to the imaging surface of imagery optical system.
A kind of electronic device is separately provided according to the present invention, includes image-taking device as mentioned in the previous paragraph.
A kind of imagery optical system is provided according to the present invention, by object side to image side sequentially include the first lens, second thoroughly
Mirror, the third lens, the 4th lens, the 5th lens and the 6th lens.First lens have positive refracting power, object side surface dipped beam
It is convex surface at axis.It is concave surface at the dipped beam axis of the third lens image side surface.It is concave surface at 4th lens image side surface dipped beam axis.5th
Lens have positive refracting power.6th lens have negative refracting power, are concave surface at the dipped beam axis of image side surface, image side surface is off-axis
Place includes an at least convex surface, and its object side surface and image side surface are all aspherical.The lens sum of imagery optical system is
Six, appointing between two adjacent lens all has a air gap, and the focal lengths of the first lens is f1, and the focal length of the third lens is f3,
The focal length of 4th lens is f4, and the focal length of the 5th lens is f5, and the focal length of the 6th lens is f6, and | f3 | and | f4 | be all greater than |
F1 |, | f5 | and | f6 |, the first lens object side surface to the 6th lens image side surface is Td in the distance on optical axis, and imaging is used up
The maximum image height of system is ImgH, and the abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, and imaging is used up
The focal length of system is f, and the entrance pupil diameter of imagery optical system is EPD, meets following condition:
Td/ImgH<1.25；
1.5<V3/V4<4.0；
|f/f3|+|f/f4|≤0.28；And
1.25<ImgH/EPD≤1.64。
A kind of image-taking device is more provided according to the present invention, includes imagery optical system and sense electronics as mentioned in the previous paragraph
Optical element, wherein electronics photosensitive element is set to the imaging surface of imagery optical system.
A kind of electronic device is separately provided according to the present invention, includes image-taking device as mentioned in the previous paragraph.
When | f1 |, | f3 |, | f4 |, | f5 | and | f6 | when meeting above-mentioned condition, lens in imagery optical system can be made
Refracting power distribution is more uniform, the problem of to slow down over-correction aberration.
When Td/ImgH meets above-mentioned condition, the miniaturization of imagery optical system can be maintained, in large aperture and big view
The characteristics of having both short overall length under the configuration needs at angle.
When V3/V4 meets above-mentioned condition, the effect of the third lens and the 4th lens are for amendment color difference can be promoted.
When | f/f3 |+| f/f4 | when meeting above-mentioned condition, the susceptibility of the third lens Yu the 4th lens can be effectively reduced, with
Improve manufacture qualification rate.
When ImgH/EPD meets above-mentioned condition, the light-inletting quantity of imagery optical system can be effectively increased.
Detailed description of the invention
Fig. 1 is painted a kind of schematic diagram of image-taking device according to first embodiment of the invention；
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve graph of first embodiment from left to right；
Fig. 3 is painted a kind of schematic diagram of image-taking device according to second embodiment of the invention；
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve graph of second embodiment from left to right；
Fig. 5 is painted a kind of schematic diagram of image-taking device according to third embodiment of the invention；
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve graph of 3rd embodiment from left to right；
Fig. 7 is painted a kind of schematic diagram of image-taking device according to fourth embodiment of the invention；
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve graph of fourth embodiment from left to right；
Fig. 9 is painted a kind of schematic diagram of image-taking device according to fifth embodiment of the invention；
Figure 10 is sequentially spherical aberration, astigmatism and the distortion curve graph of the 5th embodiment from left to right；
Figure 11 is painted a kind of schematic diagram of image-taking device according to sixth embodiment of the invention；
Figure 12 is sequentially spherical aberration, astigmatism and the distortion curve graph of sixth embodiment from left to right；
Figure 13 is painted a kind of schematic diagram of image-taking device according to seventh embodiment of the invention；
Figure 14 is sequentially spherical aberration, astigmatism and the distortion curve graph of the 7th embodiment from left to right；
Figure 15 is painted a kind of schematic diagram of image-taking device according to eighth embodiment of the invention；
Figure 16 is sequentially spherical aberration, astigmatism and the distortion curve graph of the 8th embodiment from left to right；
Figure 17 is painted a kind of schematic diagram of electronic device according to ninth embodiment of the invention；
Figure 18 is painted a kind of schematic diagram of electronic device according to tenth embodiment of the invention；And
Figure 19 is painted a kind of schematic diagram of electronic device according to eleventh embodiment of the invention.
[symbol description]
Electronic device: 10,20,30
Image-taking device: 11,21,31
Aperture: 100,200,300,400,500,600,700,800
Diaphragm: 301,401,501,701
First lens: 110,210,310,410,510,610,710,810
Object side surface: 111,211,311,411,511,611,711,811
Image side surface: 112,212,312,412,512,612,712,812
Second lens: 120,220,320,420,520,620,720,820
Object side surface: 121,221,321,421,521,621,721,821
Image side surface: 122,222,322,422,522,622,722,822
The third lens: 130,230,330,430,530,630,730,830
Object side surface: 131,231,331,431,531,631,731,831
Image side surface: 132,232,332,432,532,632,732,832
4th lens: 140,240,340,440,540,640,740,840
Object side surface: 141,241,341,441,541,641,741,841
Image side surface: 142,242,342,442,542,642,742,842
5th lens: 150,250,350,450,550,650,750,850
Object side surface: 151,251,351,451,551,651,751,851
Image side surface: 152,252,352,452,552,652,752,852
6th lens: 160,260,360,460,560,660,760,860
Object side surface: 161,261,361,461,561,661,761,861
Image side surface: 162,262,362,462,562,662,762,862
Infrared ray filters out filter element: 170,270,370,470,570,670,770,870
Imaging surface: 180,280,380,480,580,680,780,880
Electronics photosensitive element: 190,290,390,490,590,690,790,890
F: the focal length of imagery optical system
Fno: the f-number of imagery optical system
HFOV: the half at maximum visual angle in imagery optical system
V3: the abbe number of the third lens
The abbe number of V4: the four lens
CT3: the third lens are in the thickness on optical axis
CT4: the four lens are in the thickness on optical axis
CT5: the five lens are in the thickness on optical axis
T34: the third lens and the 4th lens are in the spacing distance on optical axis
ImgH: the maximum image height of imagery optical system
EPD: the entrance pupil diameter of imagery optical system
Td: the first lens object side surface to the 6th lens image side surface is in the distance on optical axis
R6: the radius of curvature on the third lens image side surface
The radius of curvature of R8: the four lens image side surface
The radius of curvature of R9: the five lens object side surface
The radius of curvature of R10: the five lens image side surface
The focal length of f1: the first lens
F3: the focal length of the third lens
The focal length of f4: the four lens
The focal length of f5: the five lens
The focal length of f6: the six lens
Specific embodiment
A kind of imagery optical system sequentially includes the first lens, the second lens, the third lens, by object side to image side
Four lens, the 5th lens and the 6th lens, wherein the lens of imagery optical system are six.
The first lens, the second lens, the third lens, the 4th lens, the 5th lens of imagery optical system described in leading portion
And the 6th in lens, appointing between two adjacent lens all has a air gap；That is, imagery optical system has six
The single unbonded lens of piece.Since the more non-adhering lens of the processing procedure of cemented lens are complicated, especially needed in the adhesive surface of two lens
Possess the curved surface of high accuracy, to reach the high adaptation when bonding of two lens, and during bonding, it is also possible to because of deviation
And cause adaptation bad, influence whole optical imagery quality.Therefore, in imagery optical system of the present invention, appoint two adjacent
The problem that all there is a air gap between lens, bonding lens can be effectively improved.
First lens have positive refracting power, are convex surface at the dipped beam axis of object side surface, so as to the first lens of appropriate adjustment
Positive refracting power intensity facilitates the total length for shortening imagery optical system.
Second lens can have negative refracting power, so as to effectively correcting the aberration of imagery optical system.
It is concave surface at the dipped beam axis of the third lens image side surface, so as to effectively correcting the aberration of imagery optical system, and can
The generation of stray light is effectively reduced in the variation for slowing down the third lens integral face shape, to have both good image quality and manufacturing.
It can be convex surface at 4th lens object side surface dipped beam axis, be concave surface at the dipped beam axis of image side surface, so as to reinforcing astigmatism
Amendment, and the variation of the 4th lens integral face shape can be slowed down, the generation of stray light is effectively reduced, to have both good image quality
With manufacturing.In addition, place can all include an at least point of inflexion off axis for the off-axis place in the 4th lens object side surface and image side surface, so as to
The aberration of effective modified off-axis visual field is to promote the image quality on periphery.
5th lens have positive refracting power, it is possible to provide the main aggregate capabilities of imagery optical system are conducive to shorten it always
Length.
6th lens have negative refracting power, can be concave surface at the dipped beam axis of object side surface, be at the dipped beam axis of image side surface
Concave surface, and image side surface locates that the principal point (Principal Point) of imagery optical system can be made comprising an at least convex surface off axis
Far from imaging surface, be conducive to shorten its back focal length to maintain to minimize, and can effective modified off-axis visual field aberration.
The focal length of first lens is f1, and the focal length of the third lens is f3, and the focal length of the 4th lens is f4, the coke of the 5th lens
It is f6 away from the focal length for f5, the 6th lens, and | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |.Whereby, imaging can be made to use up
The refracting power distribution of lens is more uniform in system, the problem of to slow down over-correction aberration.Preferably, | f1 | can be greater than |
F5 | and | f6 |.
First lens object side surface to the 6th lens image side surface is Td in the distance on optical axis, imagery optical system
Maximum image height is ImgH, meets following condition: Td/ImgH < 1.25.Whereby, the miniaturization of imagery optical system can be maintained,
The characteristics of to have both short overall length under the configuration needs at large aperture Yu big visual angle.Preferably, following condition can be met: Td/ImgH <
1.15。
The abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, meets following condition: 1.5 < V3/
V4<4.0.Whereby, the effect of the third lens and the 4th lens are for amendment color difference can be promoted.
The radius of curvature on the third lens image side surface is R6, and the radius of curvature on the 4th lens image side surface is R8, and imaging is used
The focal length of optical system is f, meets following condition: (| R6 |+| R8 |)/f < 10.0.Whereby, the third lens and the 4th can be slowed down
The variation of lens integral face shape, is effectively reduced the generation of stray light, to have both good image quality and manufacturing.Preferably,
Following condition can be met: (| R6 |+| R8 |)/f < 5.0.
The focal length of imagery optical system is f, and the focal length of the third lens is f3, and the focal length of the 4th lens is f4, is met
Following condition: | f/f3 |+| f/f4 | < 0.50.Whereby, the susceptibility of the third lens Yu the 4th lens can be effectively reduced, to improve
Manufacture qualification rate.
The maximum image height of imagery optical system is ImgH, the entrance pupil (Entrance Pupil) of imagery optical system
Diameter is EPD, meets following condition: 1.25 < ImgH/EPD < 1.75.Whereby, can effectively increase imagery optical system into
Light quantity.
The third lens are in, with a thickness of CT3, the 4th lens are in, with a thickness of CT4, the 5th lens are in light on optical axis on optical axis
On axis with a thickness of CT5, meet following condition: 0.80 < CT5/ (CT3+CT4) < 2.0.Whereby, imaging can be efficiently used to use up
The space of system, to avoid between lens too close to and the problem of cause group to load onto.
The f-number (f-number) of imagery optical system is Fno, meets following condition: 1.5 < Fno < 2.0.It borrows
This, can effectively play the advantage of large aperture, still can clear capture when light is inadequate.
The radius of curvature of 5th lens object side surface is R9, and the radius of curvature on the 5th lens image side surface is R10, is met
Following condition: 0.25 < (R9+R10)/(R9-R10) < 2.0.Whereby, be conducive to slow down the face deformation of the 5th lens, to reduce
The formation of face reflection.
The focal length of imagery optical system is f, and the radius of curvature on the third lens image side surface is R6, meets following item
Part: 0.20 < f/R6 < 1.50.Whereby, the face deformation of the third lens can be slowed down, to reduce the manufacture susceptibility of the third lens.Compared with
Goodly, following condition: 0.35 < f/R6 < 1.20 can be met.
The third lens are in a thickness of CT3, the 4th lens are on optical axis, with a thickness of CT4, meeting following item on optical axis
Part: CT4/CT3 < 1.60.Whereby, facilitate the manufacture and assembling of lens, to promote production qualification rate.
4th lens are in, with a thickness of CT4, the third lens are in the spacing distance on optical axis with the 4th lens on optical axis
T34 meets following condition: 0.75 < CT4/T34 < 2.25.Whereby, be conducive to obtain foot between the third lens and the 4th lens
The configuration in enough space and suitable assembling, with desensitising.
In imagery optical system provided by the invention, the material of lens can be plastic cement or glass.When the material of lens is
Production cost can be effectively reduced in plastic cement.The another material for working as lens is glass, then can increase imagery optical system refracting power
The freedom degree of configuration.In addition, the object side surface and image side surface in imagery optical system can be aspherical (ASP), it is aspherical
It can be easy to be fabricated to the shape other than spherical surface, obtain more controlled variable, to cut down aberration, and then reduce lens and use
Number, therefore the total length of imagery optical system of the present invention can be effectively reduced.
Furthermore in imagery optical system provided by the invention, if lens surface is convex surface and does not define the convex surface position
When, then it represents that the lens surface can be convex surface at dipped beam axis；If lens surface is concave surface and does not define the concave surface position,
Indicate that the lens surface can be concave surface at dipped beam axis.In imagery optical system provided by the invention, just bent if lens have
The focal length for rolling over power or negative refracting power or lens, all can refer to the refracting power or focal length at lens dipped beam axis.
In addition, an at least diaphragm settable on demand is helped in imagery optical system of the present invention with reducing stray light
In promotion image quality.
The imaging surface of imagery optical system of the invention can be flat for one according to the difference of its corresponding electronics photosensitive element
Face or the curved surface for having any curvature particularly relate to concave surface towards the curved surface toward object side direction.
In imagery optical system of the invention, aperture configuration can for preposition aperture or in set aperture, wherein preposition aperture
Imply that aperture is set between object and the first lens, in set aperture then and indicate that aperture is set between the first lens and imaging surface.
If aperture is preposition aperture, the outgoing pupil of imagery optical system and imaging surface can be made to generate longer distance, made it have remote
The heart (Telecentric) effect, and the CCD or CMOS that can increase electronics photosensitive element receive the efficiency of image；Light is set if in
Circle, facilitates the field angle of expansion system, and imagery optical system is made to have the advantage of wide-angle lens.
The more visual demand of imagery optical system of the invention is applied in the optical system of mobile focusing, and has both excellent
The characteristic of lens error correction and good image quality.Also it many-sided can be applied to three-dimensional (3D) image capture, digital camera, mobile production
Product, digital flat panel, smart television, network monitoring device, somatic sensation television game machine, automobile data recorder, reversing developing apparatus, robot with
In the electronic devices such as wearable product.
The present invention separately provides a kind of image-taking device, include imagery optical system above-mentioned and electronics photosensitive element,
Middle electronics photosensitive element is set to the imaging surface of imagery optical system.Pass through the third lens image side surface and the 4th lens image side
Surface is all concave surface, can slow down the variation of the third lens Yu the 4th lens integral face shape, the generation of stray light be effectively reduced, with simultaneous
Have good image quality and manufacturing.Furthermore the miniaturization of imagery optical system can be also maintained, in large aperture and big view
The characteristics of having both short overall length under the configuration needs at angle.Preferably, image-taking device can further include lens barrel, support device
(Holder Member) or combinations thereof.
The present invention provides a kind of electronic device, includes image-taking device above-mentioned.It whereby, can matching at large aperture and big visual angle
Set the characteristics of having both short overall length under demand.Preferably, electronic device can further include control unit, display unit, storage list
Member, random access memory (RAM) or combinations thereof.
According to above embodiment, specific embodiment set forth below simultaneously cooperates attached drawing to be described in detail.
<first embodiment>
Fig. 1 and Fig. 2 is please referred to, wherein Fig. 1 is painted a kind of schematic diagram of image-taking device according to first embodiment of the invention,
Fig. 2 is sequentially spherical aberration, astigmatism and the distortion curve graph of first embodiment from left to right.As shown in Figure 1, the capture of first embodiment
Device includes imagery optical system (not another label) and electronics photosensitive element 190.Imagery optical system is by object side to picture
Side sequentially includes the first lens 110, aperture 100, the second lens 120, the third lens 130, the 4th lens 140, the 5th lens
150, the 6th lens 160, infrared ray filter out filter element (IR-cut filter) 170 and imaging surface 180, and electronics is photosensitive
Element 190 is set to the imaging surface 180 of imagery optical system, and wherein the lens of imagery optical system are six (110-
160), appointing has a air gap between two adjacent lens.
First lens 110 have positive refracting power, and are plastic cement material, are convex surface, picture at 111 dipped beam axis of object side surface
It is convex surface at 112 dipped beam axis of side surface, and is all aspherical.
Second lens 120 have negative refracting power, and are plastic cement material, are plane, picture at 121 dipped beam axis of object side surface
It is concave surface at 122 dipped beam axis of side surface, and is all aspherical.
The third lens 130 have positive refracting power, and are plastic cement material, are convex surface, picture at 131 dipped beam axis of object side surface
It is concave surface at 132 dipped beam axis of side surface, and is all aspherical.
4th lens 140 have negative refracting power, and are plastic cement material, are convex surface, picture at 141 dipped beam axis of object side surface
It is concave surface at 142 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 141 and image side surface
142 off-axis places all include an at least point of inflexion.
5th lens 150 have positive refracting power, and are plastic cement material, are convex surface, picture at 151 dipped beam axis of object side surface
It is convex surface at 152 dipped beam axis of side surface, and is all aspherical.
6th lens 160 have negative refracting power, and are plastic cement material, are concave surface, picture at 161 dipped beam axis of object side surface
It is concave surface at 162 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 162
Convex surface.
It is glass material that infrared ray, which filters out filter element 170, is set between the 6th lens 160 and imaging surface 180 and not
Influence the focal length of imagery optical system.
The aspherical fitting equation of above-mentioned each lens is expressed as follows:
Wherein:
X: the point for being Y apart from optical axis on aspherical, with the relative distance for being tangential on intersection point section 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: the i-th rank asphericity coefficient.
In the imagery optical system of first embodiment, the focal length of imagery optical system is f, imagery optical system
F-number is Fno, and the half at maximum visual angle is HFOV in imagery optical system, and numerical value is as follows: f=4.08mm；Fno=
2.13；And HFOV=38.0 degree.
In the imagery optical system of first embodiment, the abbe number of the third lens 130 is V3, the 4th lens 140
Abbe number is V4, meets following condition: V3/V4=2.37.
In the imagery optical system of first embodiment, the third lens 130 on optical axis with a thickness of CT3, the 4th lens
140 in, with a thickness of CT4, meeting following condition: CT4/CT3=0.71 on optical axis.
In the imagery optical system of first embodiment, the third lens 130 on optical axis with a thickness of CT3, the 4th lens
140 in a thickness of CT4, the 5th lens 150 are on optical axis, with a thickness of CT5, meeting following condition: CT5/ (CT3 on optical axis
+ CT4)=1.11.
In the imagery optical system of first embodiment, the 4th lens 140 on optical axis with a thickness of CT4, the third lens
130 and the 4th lens 140 in the spacing distance on optical axis be T34, meet following condition: CT4/T34=1.42.
In the imagery optical system of first embodiment, the maximum image height of imagery optical system is ImgH, and imaging is used up
The entrance pupil diameter of system is EPD, meets following condition: ImgH/EPD=1.70.
In the imagery optical system of first embodiment, 111 to the 6th lens image side surface 162 of the first lens object side surface
It is Td in the distance on optical axis, the maximum image height of imagery optical system is ImgH, meets following condition: Td/ImgH=
1.17。
In the imagery optical system of first embodiment, the radius of curvature on the third lens image side surface 132 is R6, and the 4th thoroughly
The radius of curvature of mirror image side surface 142 is R8, and the focal length of imagery optical system is f, meets following condition: (| R6 |+| R8
|)/f=3.36.
In the imagery optical system of first embodiment, the radius of curvature of the 5th lens object side surface 151 is R9, and the 5th thoroughly
The radius of curvature of mirror image side surface 152 is R10, meets following condition: (R9+R10)/(R9-R10)=0.74.
In the imagery optical system of first embodiment, the focal length of imagery optical system is f, the third lens image side surface
132 radius of curvature is R6, meets following condition: f/R6=0.38.
In the imagery optical system of first embodiment, the focal length of imagery optical system is f, the coke of the third lens 130
Away from for f3, the focal length of the 4th lens 140 is f4, meets following condition: | f/f3 |+| f/f4 |=0.21.
In the imagery optical system of first embodiment, the focal length of the first lens 110 is f1, the focal length of the third lens 130
For f3, the focal length of the 4th lens 140 is f4, and the focal length of the 5th lens 150 is f5, and the focal length of the 6th lens 160 is f6, wherein |
F3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.(following table one is referred to, | f3 |=
60.51, | f4 |=29.59, | f1 |=2.92, | f5 |=2.76, | f6 |=2.19.)
Cooperate again referring to following table one and table two.
Table one is the detailed structured data of Fig. 1 first embodiment, and wherein the unit of radius of curvature, thickness and focal length is mm,
And surface 0-16 is sequentially indicated by the surface of object side to image side.Table two is the aspherical surface data in first embodiment, wherein k table
Conical surface coefficient in aspheric curve equation, A4-A16 then indicate each surface 4-16 rank asphericity coefficient.In addition, following
Embodiment table is the schematic diagram and aberration curve figure of corresponding each embodiment, in table the definition of data all with first embodiment
The definition of table one and table two is identical, is not added repeats herein.
<second embodiment>
Referring to figure 3. and Fig. 4, wherein Fig. 3 is painted a kind of schematic diagram of image-taking device according to second embodiment of the invention,
Fig. 4 is sequentially spherical aberration, astigmatism and the distortion curve graph of second embodiment from left to right.From the figure 3, it may be seen that the capture of second embodiment
Device includes imagery optical system (not another label) and electronics photosensitive element 290.Imagery optical system is by object side to picture
Side sequentially includes aperture 200, the first lens 210, the second lens 220, the third lens 230, the 4th lens 240, the 5th lens
250, the 6th lens 260, infrared ray filter out filter element 270 and imaging surface 280, and electronics photosensitive element 290 is set into
Imaging surface 280 as using optical system, wherein the lens of imagery optical system are six (210-260), are appointed two adjacent
There is a air gap between mirror.
First lens 210 have positive refracting power, and are plastic cement material, are convex surface, picture at 211 dipped beam axis of object side surface
It is concave surface at 212 dipped beam axis of side surface, and is all aspherical.
Second lens 220 have negative refracting power, and are plastic cement material, are concave surface, picture at 221 dipped beam axis of object side surface
It is concave surface at 222 dipped beam axis of side surface, and is all aspherical.
The third lens 230 have positive refracting power, and are plastic cement material, are convex surface, picture at 231 dipped beam axis of object side surface
It is concave surface at 232 dipped beam axis of side surface, and is all aspherical.
4th lens 240 have positive refracting power, and are plastic cement material, are convex surface, picture at 241 dipped beam axis of object side surface
It is concave surface at 242 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 241 and image side surface
242 off-axis places all include an at least point of inflexion.
5th lens 250 have positive refracting power, and are plastic cement material, are convex surface, picture at 251 dipped beam axis of object side surface
It is convex surface at 252 dipped beam axis of side surface, and is all aspherical.
6th lens 260 have negative refracting power, and are plastic cement material, are concave surface, picture at 261 dipped beam axis of object side surface
It is concave surface at 262 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 262
Convex surface.
It is glass material that infrared ray, which filters out filter element 270, is set between the 6th lens 260 and imaging surface 280 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 210 is f1, the third lens 230 in the imagery optical system of second embodiment
Focal length is f3, and the focal length of the 4th lens 240 is f4, and the focal length of the 5th lens 250 is f5, and the focal length of the 6th lens 260 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table three and table four.
In second embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table three and table four can extrapolate following data:
<3rd embodiment>
Referring to figure 5. and Fig. 6, wherein Fig. 5 is painted a kind of schematic diagram of image-taking device according to third embodiment of the invention,
Fig. 6 is sequentially spherical aberration, astigmatism and the distortion curve graph of 3rd embodiment from left to right.As shown in Figure 5, the capture of 3rd embodiment
Device includes imagery optical system (not another label) and electronics photosensitive element 390.Imagery optical system is by object side to picture
Side sequentially includes aperture 300, the first lens 310, the second lens 320, diaphragm 301, the third lens 330, the 4th lens 340,
Five lens 350, the 6th lens 360, infrared ray filter out filter element 370 and imaging surface 380, and electronics photosensitive element 390 is set
It is placed in the imaging surface 380 of imagery optical system, wherein the lens of imagery optical system are six (310-360), Ren Erxiang
There is a air gap between adjacent lens.
First lens 310 have positive refracting power, and are plastic cement material, are convex surface, picture at 311 dipped beam axis of object side surface
It is concave surface at 312 dipped beam axis of side surface, and is all aspherical.
Second lens 320 have negative refracting power, and are plastic cement material, are convex surface, picture at 321 dipped beam axis of object side surface
It is concave surface at 322 dipped beam axis of side surface, and is all aspherical.
The third lens 330 have positive refracting power, and are plastic cement material, are convex surface, picture at 331 dipped beam axis of object side surface
It is concave surface at 332 dipped beam axis of side surface, and is all aspherical.
4th lens 340 have negative refracting power, and are plastic cement material, are convex surface, picture at 341 dipped beam axis of object side surface
It is concave surface at 342 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 341 and image side surface
342 off-axis places all include an at least point of inflexion.
5th lens 350 have positive refracting power, and are plastic cement material, are convex surface, image side at 351 dipped beam axis of object side table
It is convex surface at 352 dipped beam axis of surface, and is all aspherical.
6th lens 360 have negative refracting power, and are plastic cement material, are concave surface, picture at 361 dipped beam axis of object side surface
It is concave surface at 362 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 362
Convex surface.
It is glass material that infrared ray, which filters out filter element 370, is set between the 6th lens 360 and imaging surface 380 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 310 is f1, the third lens 330 in the imagery optical system of 3rd embodiment
Focal length is f3, and the focal length of the 4th lens 340 is f4, and the focal length of the 5th lens 350 is f5, and the focal length of the 6th lens 360 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table five and table six.
In 3rd embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table five and table six can extrapolate following data:
<fourth embodiment>
Fig. 7 and Fig. 8 is please referred to, wherein Fig. 7 is painted a kind of schematic diagram of image-taking device according to fourth embodiment of the invention,
Fig. 8 is sequentially spherical aberration, astigmatism and the distortion curve graph of fourth embodiment from left to right.As shown in Figure 7, the capture of fourth embodiment
Device includes imagery optical system (not another label) and electronics photosensitive element 490.Imagery optical system is by object side to picture
Side sequentially includes aperture 400, the first lens 410, diaphragm 401, the second lens 420, the third lens 430, the 4th lens 440,
Five lens 450, the 6th lens 460, infrared ray filter out filter element 470 and imaging surface 480, and electronics photosensitive element 490 is set
It is placed in the imaging surface 480 of imagery optical system, wherein the lens of imagery optical system are six (410-460), Ren Erxiang
There is a air gap between adjacent lens.
First lens 410 have positive refracting power, and are plastic cement material, are convex surface, picture at 411 dipped beam axis of object side surface
It is concave surface at 412 dipped beam axis of side surface, and is all aspherical.
Second lens 420 have negative refracting power, and are plastic cement material, are convex surface, picture at 421 dipped beam axis of object side surface
It is concave surface at 422 dipped beam axis of side surface, and is all aspherical.
The third lens 430 have positive refracting power, and are plastic cement material, are convex surface, picture at 431 dipped beam axis of object side surface
It is concave surface at 432 dipped beam axis of side surface, and is all aspherical.
4th lens 440 have negative refracting power, and are plastic cement material, are convex surface, picture at 441 dipped beam axis of object side surface
It is concave surface at 442 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 441 and image side surface
442 off-axis places all include an at least point of inflexion.
5th lens 450 have positive refracting power, and are plastic cement material, are concave surface, picture at 451 dipped beam axis of object side surface
It is convex surface at 452 dipped beam axis of side surface, and is all aspherical.
6th lens 460 have negative refracting power, and are plastic cement material, are concave surface, picture at 461 dipped beam axis of object side surface
It is concave surface at 462 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 462
Convex surface.
It is glass material that infrared ray, which filters out filter element 470, is set between the 6th lens 460 and imaging surface 480 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 410 is f1, the third lens 430 in the imagery optical system of fourth embodiment
Focal length is f3, and the focal length of the 4th lens 440 is f4, and the focal length of the 5th lens 450 is f5, and the focal length of the 6th lens 460 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table seven and table eight.
In fourth embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table seven and table eight can extrapolate following data:
<the 5th embodiment>
Fig. 9 and Figure 10 is please referred to, wherein Fig. 9 is painted a kind of signal of image-taking device according to fifth embodiment of the invention
Figure, Figure 10 are sequentially spherical aberration, astigmatism and the distortion curve graph of the 5th embodiment from left to right.As shown in Figure 9, the 5th embodiment
Image-taking device includes imagery optical system (not another label) and electronics photosensitive element 590.Imagery optical system is by object side
It sequentially include aperture 500, the first lens 510, the second lens 520, diaphragm 501, the third lens 530, the 4th lens to image side
540, the 5th lens 550, the 6th lens 560, infrared ray filter out filter element 570 and imaging surface 580, and electronics photosensitive element
590 are set to the imaging surface 580 of imagery optical system, and wherein the lens of imagery optical system are six (510-560), appoint
There is a air gap between two adjacent lens.
First lens 510 have positive refracting power, and are plastic cement material, are convex surface, picture at 511 dipped beam axis of object side surface
It is concave surface at 512 dipped beam axis of side surface, and is all aspherical.
Second lens 520 have negative refracting power, and are plastic cement material, are convex surface, picture at 521 dipped beam axis of object side surface
It is concave surface at 522 dipped beam axis of side surface, and is all aspherical.
The third lens 530 have positive refracting power, and are plastic cement material, are convex surface, picture at 531 dipped beam axis of object side surface
It is concave surface at 532 dipped beam axis of side surface, and is all aspherical.
4th lens 540 have negative refracting power, and are plastic cement material, are convex surface, picture at 541 dipped beam axis of object side surface
It is concave surface at 542 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 541 and image side surface
542 off-axis places all include an at least point of inflexion.
5th lens 550 have positive refracting power, and are plastic cement material, are convex surface, picture at 551 dipped beam axis of object side surface
It is convex surface at 552 dipped beam axis of side surface, and is all aspherical.
6th lens 560 have negative refracting power, and are plastic cement material, are concave surface, picture at 561 dipped beam axis of object side surface
It is concave surface at 562 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 562
Convex surface.
It is glass material that infrared ray, which filters out filter element 570, is set between the 6th lens 560 and imaging surface 580 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 510 is f1, the third lens 530 in the imagery optical system of the 5th embodiment
Focal length is f3, and the focal length of the 4th lens 540 is f4, and the focal length of the 5th lens 550 is f5, and the focal length of the 6th lens 560 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table nine and table ten.
In 5th embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table nine and table ten can extrapolate following data:
<sixth embodiment>
Figure 11 and Figure 12 is please referred to, wherein Figure 11 is painted a kind of signal of image-taking device according to sixth embodiment of the invention
Figure, Figure 12 are sequentially spherical aberration, astigmatism and the distortion curve graph of sixth embodiment from left to right.As shown in Figure 11, sixth embodiment
Image-taking device include imagery optical system (not another label) and electronics photosensitive element 690.Imagery optical system is by object
Side to image side sequentially includes aperture 600, the first lens 610, the second lens 620, the third lens 630, the 4th lens the 640, the 5th
Lens 650, the 6th lens 660, infrared ray filter out filter element 670 and imaging surface 680, and electronics photosensitive element 690 is arranged
In the imaging surface 680 of imagery optical system, wherein the lens of imagery optical system are six (610-660), and wantonly two is adjacent
Lens between have a air gap.
First lens 610 have positive refracting power, and are plastic cement material, are convex surface, picture at 611 dipped beam axis of object side surface
It is concave surface at 612 dipped beam axis of side surface, and is all aspherical.
Second lens 620 have negative refracting power, and are plastic cement material, are concave surface, picture at 621 dipped beam axis of object side surface
It is concave surface at 622 dipped beam axis of side surface, and is all aspherical.
The third lens 630 have positive refracting power, and are plastic cement material, are convex surface, picture at 631 dipped beam axis of object side surface
It is concave surface at 632 dipped beam axis of side surface, and is all aspherical.
4th lens 640 have negative refracting power, and are plastic cement material, are convex surface, picture at 641 dipped beam axis of object side surface
It is concave surface at 642 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 641 and image side surface
642 off-axis places all include an at least point of inflexion.
5th lens 650 have positive refracting power, and are plastic cement material, are convex surface, picture at 651 dipped beam axis of object side surface
It is convex surface at 652 dipped beam axis of side surface, and is all aspherical.
6th lens 660 have negative refracting power, and are plastic cement material, are concave surface, picture at 661 dipped beam axis of object side surface
It is concave surface at 662 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 662
Convex surface.
It is glass material that infrared ray, which filters out filter element 670, is set between the 6th lens 660 and imaging surface 680 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 610 is f1, the third lens 630 in the imagery optical system of sixth embodiment
Focal length is f3, and the focal length of the 4th lens 640 is f4, and the focal length of the 5th lens 650 is f5, and the focal length of the 6th lens 660 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table 11 and table 12.
In sixth embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table 11 and table 12 can extrapolate following data:
<the 7th embodiment>
Figure 13 and Figure 14 is please referred to, wherein Figure 13 is painted a kind of signal of image-taking device according to seventh embodiment of the invention
Figure, Figure 14 are sequentially spherical aberration, astigmatism and the distortion curve graph of the 7th embodiment from left to right.As shown in Figure 13, the 7th embodiment
Image-taking device include imagery optical system (not another label) and electronics photosensitive element 790.Imagery optical system is by object
Side to image side sequentially includes aperture 700, the first lens 710, diaphragm 701, the second lens 720, the third lens 730, the 4th lens
740, the 5th lens 750, the 6th lens 760, infrared ray filter out filter element 770 and imaging surface 780, and electronics photosensitive element
790 are set to the imaging surface 780 of imagery optical system, and wherein the lens of imagery optical system are six (710-760), appoint
There is a air gap between two adjacent lens.
First lens 710 have positive refracting power, and are plastic cement material, are convex surface, picture at 711 dipped beam axis of object side surface
It is concave surface at 712 dipped beam axis of side surface, and is all aspherical.
Second lens 720 have negative refracting power, and are plastic cement material, are convex surface, picture at 721 dipped beam axis of object side surface
It is concave surface at 722 dipped beam axis of side surface, and is all aspherical.
The third lens 730 have positive refracting power, and are plastic cement material, are convex surface, picture at 731 dipped beam axis of object side surface
It is concave surface at 732 dipped beam axis of side surface, and is all aspherical.
4th lens 740 have positive refracting power, and are plastic cement material, are convex surface, picture at 741 dipped beam axis of object side surface
It is concave surface at 742 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 741 and image side surface
742 off-axis places all include an at least point of inflexion.
5th lens 750 have positive refracting power, and are plastic cement material, are concave surface, picture at 751 dipped beam axis of object side surface
It is convex surface at 752 dipped beam axis of side surface, and is all aspherical.
6th lens 760 have negative refracting power, and are plastic cement material, are concave surface, picture at 761 dipped beam axis of object side surface
It is concave surface at 762 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 762
Convex surface.
It is glass material that infrared ray, which filters out filter element 770, is set between the 6th lens 760 and imaging surface 780 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 710 is f1, the third lens 730 in the imagery optical system of the 7th embodiment
Focal length is f3, and the focal length of the 4th lens 740 is f4, and the focal length of the 5th lens 750 is f5, and the focal length of the 6th lens 760 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table 13 and table 14.
In 7th embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table 13 and table 14 can extrapolate following data:
<the 8th embodiment>
Figure 15 and Figure 16 is please referred to, wherein Figure 15 is painted a kind of signal of image-taking device according to eighth embodiment of the invention
Figure, Figure 16 are sequentially spherical aberration, astigmatism and the distortion curve graph of the 8th embodiment from left to right.As shown in Figure 15, the 8th embodiment
Image-taking device include imagery optical system (not another label) and electronics photosensitive element 890.Imagery optical system is by object
Side to image side sequentially includes aperture 800, the first lens 810, the second lens 820, the third lens 830, the 4th lens the 840, the 5th
Lens 850, the 6th lens 860, infrared ray filter out filter element 870 and imaging surface 880, and electronics photosensitive element 890 is arranged
In the imaging surface 880 of imagery optical system, wherein the lens of imagery optical system are six (810-860), and wantonly two is adjacent
Lens between have a air gap.
First lens 810 have positive refracting power, and are glass material, are convex surface, picture at 811 dipped beam axis of object side surface
It is concave surface at 812 dipped beam axis of side surface, and is all aspherical.
Second lens 820 have negative refracting power, and are plastic cement material, are convex surface, picture at 821 dipped beam axis of object side surface
It is concave surface at 822 dipped beam axis of side surface, and is all aspherical.
The third lens 830 have negative refracting power, and are plastic cement material, are convex surface, picture at 831 dipped beam axis of object side surface
It is concave surface at 832 dipped beam axis of side surface, and is all aspherical.
4th lens 840 have negative refracting power, and are plastic cement material, are convex surface, picture at 841 dipped beam axis of object side surface
It is concave surface at 842 dipped beam axis of side surface, and is all aspherical.In addition, the off-axis place in the 4th lens object side surface 841 and image side surface
842 off-axis places all include an at least point of inflexion.
5th lens 850 have positive refracting power, and are plastic cement material, are convex surface, picture at 851 dipped beam axis of object side surface
It is convex surface at 852 dipped beam axis of side surface, and is all aspherical.
6th lens 860 have negative refracting power, and are plastic cement material, are concave surface, picture at 861 dipped beam axis of object side surface
It is concave surface at 862 dipped beam axis of side surface, and is all aspherical.In addition, place includes at least one off axis on the 6th lens image side surface 862
Convex surface.
It is glass material that infrared ray, which filters out filter element 870, is set between the 6th lens 860 and imaging surface 880 and not
Influence the focal length of imagery optical system.
In addition, the focal length of the first lens 810 is f1, the third lens 830 in the imagery optical system of the 8th embodiment
Focal length is f3, and the focal length of the 4th lens 840 is f4, and the focal length of the 5th lens 850 is f5, and the focal length of the 6th lens 860 is f6,
In | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, and | f1 | be greater than | f5 | and | f6 |.
Cooperation is referring to following table 15 and table 16.
In 8th embodiment, aspherical fitting equation indicates the form such as first embodiment.In addition, following table parameter
Definition is all identical with the first embodiment, and not in this to go forth.
Cooperation table 15 and table 16 can extrapolate following data:
<the 9th embodiment>
Figure 17 is please referred to, is the schematic diagram for being painted a kind of electronic device 10 according to ninth embodiment of the invention.9th is real
The electronic device 10 for applying example is a smart phone, and electronic device 10 includes image-taking device 11, and image-taking device 11 includes according to this hair
Bright imagery optical system (figure does not disclose) and electronics photosensitive element (figure does not disclose), wherein electronics photosensitive element is set to
The imaging surface of imagery optical system.
<the tenth embodiment>
Figure 18 is please referred to, is the schematic diagram for being painted a kind of electronic device 20 according to tenth embodiment of the invention.Tenth is real
The electronic device 20 for applying example is a tablet computer, and electronic device 20 includes image-taking device 21, and image-taking device 21 includes according to this hair
Bright imagery optical system (figure does not disclose) and electronics photosensitive element (figure does not disclose), wherein electronics photosensitive element is set to
The imaging surface of imagery optical system.
<the 11st embodiment>
Figure 19 is please referred to, is the schematic diagram for being painted a kind of electronic device 30 according to eleventh embodiment of the invention.Tenth
The electronic device 30 of one embodiment is a head-mounted display (Head-mounted display, HMD), and electronic device 30 includes
Image-taking device 31, image-taking device 31 include imagery optical system (figure does not disclose) and electronics photosensitive element according to the present invention
(figure does not disclose), wherein electronics photosensitive element is set to the imaging surface of imagery optical system.
Although the present invention is disclosed above with embodiment, however, it is not to limit the 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
Subject to the scope of which is defined in the appended claims.
Claims (30)
1. a kind of imagery optical system, which is characterized in that sequentially include by object side to image side:
One first lens have positive refracting power, are convex surface at the dipped beam axis of object side surface；
One second lens；
One the third lens are concave surface at the dipped beam axis of image side surface；
One the 4th lens are concave surface at the dipped beam axis of image side surface；
One the 5th lens have positive refracting power；And
One the 6th lens have negative refracting power, are concave surface at the dipped beam axis of image side surface, and image side surface is located off axis comprising at least
One convex surface, and its object side surface and image side surface are all aspherical；
Wherein, the lens sum of the imagery optical system is six, and all has a air gap between two adjacent lens,
The focal length of first lens is f1, and the focal length of the third lens is f3, and the focal length of the 4th lens is f4, the coke of the 5th lens
It is f6 away from the focal length for f5, the 6th lens, and | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, the first lens object side
Surface to the 6th lens image side surface is Td in the distance on optical axis, and the maximum image height of the imagery optical system is ImgH,
The abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, and the focal length of the imagery optical system is f,
The entrance pupil diameter of the imagery optical system is EPD, meets following condition:
Td/ImgH<1.25；
1.5<V3/V4<4.0；
|f/f3|+|f/f4|≤0.28；And
1.25<ImgH/EPD<1.75。
2. imagery optical system according to claim 1, which is characterized in that at the 6th lens object side surface dipped beam axis
For concave surface.
3. imagery optical system according to claim 1, which is characterized in that second lens have negative refracting power.
4. imagery optical system according to claim 1, which is characterized in that the third lens on optical axis with a thickness of
CT3, the 4th lens are in a thickness of CT4, the 5th lens are on optical axis, with a thickness of CT5, meeting following item on optical axis
Part:
0.80<CT5/(CT3+CT4)<2.0。
5. imagery optical system according to claim 4, which is characterized in that the third lens on optical axis with a thickness of
CT3, the 4th lens are in a thickness of CT4, the 5th lens are on optical axis, with a thickness of CT5, meeting following item on optical axis
Part:
1.01≤CT5/(CT3+CT4)<2.0。
6. imagery optical system according to claim 1, which is characterized in that at the 4th lens object side surface dipped beam axis
For convex surface, and the off-axis place in the 4th lens object side surface and image side surface are located all off axis comprising an at least point of inflexion.
7. imagery optical system according to claim 1, which is characterized in that the curvature on the third lens image side surface half
Diameter is R6, and the radius of curvature on the 4th lens image side surface is R8, and the focal length of the imagery optical system is f, is met following
Condition:
(|R6|+|R8|)/f<10.0。
8. imagery optical system according to claim 7, which is characterized in that the curvature on the third lens image side surface half
Diameter is R6, and the radius of curvature on the 4th lens image side surface is R8, and the focal length of the imagery optical system is f, is met following
Condition:
(|R6|+|R8|)/f<5.0。
9. imagery optical system according to claim 1, which is characterized in that the curvature of the 5th lens object side surface half
Diameter is R9, and the radius of curvature on the 5th lens image side surface is R10, meets following condition:
0.25<(R9+R10)/(R9-R10)<2.0。
10. imagery optical system according to claim 1, which is characterized in that the focal length of the imagery optical system is
The radius of curvature of f, the third lens image side surface are R6, meet following condition:
0.20<f/R6<1.50。
11. imagery optical system according to claim 10, which is characterized in that the focal length of the imagery optical system is
The radius of curvature of f, the third lens image side surface are R6, meet following condition:
0.35<f/R6<1.20。
12. imagery optical system according to claim 1, which is characterized in that the 4th lens are in the thickness on optical axis
For CT4, which is T34 in the spacing distance on optical axis with the 4th lens, meets following condition:
0.75<CT4/T34<2.25。
13. imagery optical system according to claim 1, which is characterized in that the focal length of first lens is f1, this
The focal length of five lens is f5, and the focal length of the 6th lens is f6, and | f1 | be greater than | f5 | and | f6 |.
14. imagery optical system according to claim 1, which is characterized in that the third lens object side surface dipped beam axis
Place is convex surface.
15. imagery optical system according to claim 1, which is characterized in that the 5th lens object side surface dipped beam axis
Place is convex surface.
16. a kind of image-taking device, characterized by comprising:
Imagery optical system as described in claim 1；And
One electronics photosensitive element is set to an imaging surface of the imagery optical system.
17. a kind of electronic device, characterized by comprising:
Image-taking device as claimed in claim 16.
18. a kind of imagery optical system, which is characterized in that sequentially include by object side to image side:
One first lens have positive refracting power, are convex surface at the dipped beam axis of object side surface；
One second lens；
One the third lens are concave surface at the dipped beam axis of image side surface；
One the 4th lens are concave surface at the dipped beam axis of image side surface；
One the 5th lens have positive refracting power；And
One the 6th lens have negative refracting power, are concave surface at the dipped beam axis of image side surface, and image side surface is located off axis comprising at least
One convex surface, and its object side surface and image side surface are all aspherical；
Wherein, the lens sum of the imagery optical system is six, and all has a air gap between two adjacent lens,
The focal length of first lens is f1, and the focal length of the third lens is f3, and the focal length of the 4th lens is f4, the coke of the 5th lens
It is f6 away from the focal length for f5, the 6th lens, and | f3 | and | f4 | be all greater than | f1 |, | f5 | and | f6 |, the first lens object side
Surface to the 6th lens image side surface is Td in the distance on optical axis, and the maximum image height of the imagery optical system is ImgH,
The abbe number of the third lens is V3, and the abbe number of the 4th lens is V4, and the focal length of the imagery optical system is f,
The entrance pupil diameter of the imagery optical system is EPD, meets following condition:
Td/ImgH<1.25；
1.5<V3/V4<4.0；
|f/f3|+|f/f4|≤0.28；And
1.25<ImgH/EPD≤1.64。
19. imagery optical system according to claim 18, which is characterized in that the 6th lens object side surface dipped beam axis
Place is concave surface.
20. imagery optical system according to claim 18, which is characterized in that the third lens are in the thickness on optical axis
For CT3, the 4th lens are in a thickness of CT4, the 5th lens on optical axis in, with a thickness of CT5, meeting following on optical axis
Condition:
0.80<CT5/(CT3+CT4)<2.0。
21. imagery optical system according to claim 18, which is characterized in that the 4th lens object side surface dipped beam axis
Place is convex surface, and the off-axis place in the 4th lens object side surface and image side surface are located all off axis comprising an at least point of inflexion.
22. imagery optical system according to claim 18, which is characterized in that the curvature on the third lens image side surface
Radius is R6, and the radius of curvature on the 4th lens image side surface is R8, and the focal length of the imagery optical system is f, under meeting
Column condition:
(|R6|+|R8|)/f<10.0。
23. imagery optical system according to claim 18, which is characterized in that the curvature of the 5th lens object side surface
Radius is R9, and the radius of curvature on the 5th lens image side surface is R10, meets following condition:
0.25<(R9+R10)/(R9-R10)<2.0。
24. imagery optical system according to claim 18, which is characterized in that the focal length of the imagery optical system is
The radius of curvature of f, the third lens image side surface are R6, meet following condition:
0.20<f/R6<1.50。
25. imagery optical system according to claim 18, which is characterized in that the 4th lens are in the thickness on optical axis
For CT4, which is T34 in the spacing distance on optical axis with the 4th lens, meets following condition:
0.75<CT4/T34<2.25。
26. imagery optical system according to claim 18, which is characterized in that the focal length of first lens is f1, should
The focal length of 5th lens is f5, and the focal length of the 6th lens is f6, and | f1 | be greater than | f5 | and | f6 |.
27. imagery optical system according to claim 18, which is characterized in that the third lens object side surface dipped beam axis
Place is convex surface.
28. imagery optical system according to claim 18, which is characterized in that the 4th lens have negative refracting power.
29. a kind of image-taking device, characterized by comprising:
Imagery optical system as claimed in claim 18；And
One electronics photosensitive element is set to an imaging surface of the imagery optical system.
30. a kind of electronic device, characterized by comprising:
Image-taking device as claimed in claim 29.
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| CN201910171402.0A CN109683292B (en) | 2015-09-30 | 2015-09-30 | Imaging optical system, image capturing device and electronic device |
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| CN201510638188.7A CN106556919B (en) | 2015-09-30 | 2015-09-30 | Imagery optical system, image-taking device and electronic device |
| CN201910171402.0A CN109683292B (en) | 2015-09-30 | 2015-09-30 | Imaging optical system, image capturing device and electronic device |
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Also Published As
| Publication number | Publication date |
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| CN109683292B (en) | 2021-06-15 |
| CN106556919B (en) | 2019-04-02 |
| CN109669257B (en) | 2021-06-04 |
| CN106556919A (en) | 2017-04-05 |
| CN109669257A (en) | 2019-04-23 |
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