CN108873266A - Wide-angle lens - Google Patents
Wide-angle lens Download PDFInfo
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- CN108873266A CN108873266A CN201810990767.1A CN201810990767A CN108873266A CN 108873266 A CN108873266 A CN 108873266A CN 201810990767 A CN201810990767 A CN 201810990767A CN 108873266 A CN108873266 A CN 108873266A
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- 230000003287 optical effect Effects 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 14
- 239000000571 coke Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000004075 alteration Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 4
- 102220300650 rs181048561 Human genes 0.000 description 4
- 102220059023 rs786201869 Human genes 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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Abstract
The present invention relates to a kind of wide-angle lens, including：Ten three pieces lens being arranged successively along optical axis from object side to image side, respectively：First lens (1), the second lens (2), the third lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th lens (7), the 8th lens (8), the 9th lens (9), the tenth lens (10), the 11st lens (11), the 12nd lens (12) and the 13rd lens (13)；It further include diaphragm (S), the diaphragm (S) is between the 9th lens (9) and the tenth lens (10)；6th lens (6) and the 7th lens (7) constitute cemented doublet group；Tenth lens (10) and the 11st lens (11) constitute cemented doublet group.Wide-angle lens according to the present invention is a kind of wide-angle lens that can be realized large aperture, low distortion.
Description
Technical field
The present invention relates to a kind of optical lens more particularly to a kind of low distortion camera lenses of large aperture wide-angle.
Background technique
In recent years, machine vision industrial lens (hereinafter referred to as FA camera lens) rapidly developed, and in NI Vision Builder for Automated Inspection, used up
Camera lens is learned to replace human eye to be detected, monitored, by the light that the optical imagery of the target of intake is focused on to imaging sensor
In quick face battle array, to obtain being detected clarification of objective, briefly, machine vision is exactly to replace human eye with machine to measure and sentence
It is disconnected.All image informations of NI Vision Builder for Automated Inspection processing, are obtained by optical lens, so, the quality of lens quality, directly
Influence the overall performance of NI Vision Builder for Automated Inspection.
Currently, traditional FA camera lens, aperture is in F2.4 or so, and field angle 120 or so, aperture is small, and field range is small, and big
Aperture, wide-angle, low distortion performance, it is meant that it is higher to the quality requirements of camera lens, it is clear that conventional lenses are no longer satisfied.
Summary of the invention
It is an object of the present invention to solve the above problems, the wide-angle lens of a kind of large aperture, low distortion is provided.
For achieving the above object, the present invention provides a kind of wide-angle lens, including：Along optical axis from object side to image side successively
Ten three pieces lens of arrangement, respectively：First lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th are thoroughly
Mirror, the 7th lens, the 8th lens, the 9th lens, the tenth lens, the 11st lens, the 12nd lens and the 13rd lens；
It further include diaphragm, the diaphragm is between the 9th lens and the tenth lens；
6th lens and the 7th lens constitute cemented doublet group；
Tenth lens and the 11st lens constitute cemented doublet group.
It according to an aspect of the present invention, further include the glass protection ball cover for being located at the first lens object side.
According to an aspect of the present invention, ten three pieces lens in the wide-angle lens are spherical lens.
According to an aspect of the present invention, first lens, second lens, the third lens, the described 5th
Lens, the 7th lens and the 11st lens are negative-power lenses；
It is 4th lens, the 6th lens, the 8th lens, the 9th lens, the tenth lens, described
12nd lens and the 13rd lens are positive power lens.
According to an aspect of the present invention, first lens to the 11st lens form the first lens group, described
12nd lens and the 13rd lens form the second lens group；
The focal length f of the focal length FA of the first lens group and focal length FB of second lens group and the wide-angle lens points
Relational expression is not met：2.8<|FA/f|<11.2 2.2<|FB/f|<3.0.
According to an aspect of the present invention, the optics effective diameter SD2 of first lens and the first lens image side surface
R value R1_2 meet relational expression：1.8<SD2/R1_2<2.0.
According to an aspect of the present invention, along optical axis from object side to image side, first lens, second lens and institute
Stating the third lens is male-female lens；Also,
The focal length f3 of the focal length f1 of first lens, the focal length f2 of second lens and the third lens with it is described
The focal length f of wide-angle lens meets relational expression respectively：6.2<|f1/f|<8.8,8.8<|f2/f|<14.6 6.3<|f3/f|<7.7.
According to an aspect of the present invention, the focal length for the cemented doublet group that the 6th lens and the 7th lens are constituted
The focal length f (10,11) and the wide-angle lens for the cemented doublet group that f (6,7), the tenth lens and the 11st lens are constituted
The focal length f of head meets relational expression respectively：4.0<|f(6,7)/f|<4.8,3.1<|f(10,11)/f|<3.7.
According to an aspect of the present invention, the Abbe number of the Abbe number vd10 of the tenth lens and the 11st lens
Vd11 meets respectively：70.0<vd10<95.2 17.0<vd11<25.0.
According to an aspect of the present invention, the 6th lens are constituted using weight fluorine material, and the tenth lens are using low
Chromatic dispersion material is constituted；Also,
The refractive index nd6 of 6th lens and the refractive index nd10 of the tenth lens meet respectively：1.7<nd6<
1.9,1.4<nd10<1.6.
According to an aspect of the present invention, along optical axis from object side to image side, the 9th lens are with positive light coke
Concave-convex lens or plate-convex lens, the tenth lens are the biconvex lens with positive light coke；Also,
The focal length f of the focal length f9 of the 9th lens and focal length f10 of the tenth lens and the wide-angle lens distinguishes
Meet relational expression：5.7<|f9/f|<7.1,3.3<|f10/f|<4.0.
According to an aspect of the present invention, along optical axis from object side to image side, the 12nd lens are biconvex lens, described
13rd lens are biconvex lens or plate-convex lens；Also,
The focal length of the focal length f12 of 12nd lens and the focal length f13 of the 13rd lens and the wide-angle lens
Meet relational expression respectively：3.5<|f12/f|<4.70 3.6<|f13/f|<9.0.
According to an aspect of the present invention, the F-number F of the wide-angle lens meets：F≤2.0.
A scheme according to the present invention, the first lens, the second lens, the third lens, the 4th lens, the 5th lens,
Six lens, the 7th lens, the 8th lens, the 9th lens, the tenth lens and the 11st lens collectively constitute the first lens group, and the tenth
Two lens and the 13rd lens form the second lens group；Also, the focal length FA of the first lens group and focal length FB of the second lens group
Meet relational expression respectively with the focal length f of wide-angle lens：2.8<|FA/f|<11.2 2.2<|FB/f|<3.0.So set, making
It is grouped between the 11st lens and the 12nd lens, focal power distribution is more reasonable, can effectively reduce system overall length and drop
The tolerance sensitivity organized before low.
The R value R1_2 of a scheme according to the present invention, the optics effective diameter SD2 of the first lens and the first lens image side surface
Meet relational expression：1.8<SD2/R1_2<2.0.So set, can satisfy the wide angular range imaging requirements of wide-angle lens, simultaneously
The distortion aberration contribution amount of first lens is maximum, has corrective action to systematical distortion.
A scheme according to the present invention, the first lens, the second lens and the third lens are male-female lens；Also, first
The focal length f of the focal length f1 of lens, the focal length f3 of the focal length f2 of the second lens and the third lens and wide-angle lens meet relationship respectively
Formula：6.2<|f1/f|<8.8,8.8<|f2/f|<14.6 6.3<|f3/f|<7.7.So set, obtaining focal power rationally
Distribution plays the role of the big field angle light of convergence, and effectively corrects off-axis aberration.
The focal length f (6,7) for the cemented doublet group that a scheme according to the present invention, the 6th lens and the 7th lens are constituted,
The focal length f (10,11) of cemented doublet group and the focal length f of wide-angle lens that tenth lens and the 11st lens are constituted meet pass respectively
It is formula：4.0<|f(6,7)/f|<4.8,3.1<|f(10,11)/f|<3.7.In the present invention, the 6th lens and the 7th lens with
And the tenth the cemented doublet of lens and the 11st lens composition can reduce the tolerance sensitivities of single eyeglass, it is often more important that have
The effectively effect of the aberrations such as astigmatism, the curvature of field, color difference of correction system.
A scheme according to the present invention, the Abbe number vd10 of the tenth lens and the Abbe number vd11 difference of the 11st lens
Meet：70.0<vd10<95.2 17.0<vd11<25.0.In the present invention, using the difference of Abbe number, by abbe number difference
Biggish two pieces of lens combinations effectively improve the efficiency of correcting chromatic aberration at cemented doublet.
A scheme according to the present invention, the 6th lens are constituted using weight fluorine material, and the tenth lens use low-dispersion material
It constitutes；Also, the refractive index nd6 of the 6th lens and the refractive index nd10 of the tenth lens meet respectively：1.7<nd6<1.9,1.4<
nd10<1.6.So set, main purpose is to utilize this two pieces refractive index that lens powers are bigger and two kinds of materials are special
Temperature characterisitic solves the temperature drift problems under extreme working temperature environment, in -40 DEG C of -80 DEG C of operating temperature ranges, clearly
Imaging, makes camera lens under different temperatures environment, keeps the high consistency of solution picture.
A scheme according to the present invention, along optical axis from object side to image side, the 9th lens are the concave-convex with positive light coke
Lens or plate-convex lens, the tenth lens are the biconvex lens with positive light coke；Also, the focal length f9 of the 9th lens and
The focal length f10 of ten lens and the focal length f of wide-angle lens meet relational expression respectively：5.7<|f9/f|<7.1,3.3<|f10/f|<
4.0.So set, chief ray height is high using two pieces of biconvex eyeglasses before and after making diaphragm, requires, have meeting large aperture
While enough light passing amounts, for optical system without vignetting, relative illumination may be up to 85%, and shoot on location field of view edge is not in
Dark angle.
A scheme according to the present invention, along optical axis from object side to image side, the 12nd lens are biconvex lens, and the 13rd thoroughly
Mirror is biconvex lens or plate-convex lens；Also, the focal length f12 of the 12nd lens and the focal length f13 and wide-angle of the 13rd lens
The focal length of camera lens meets relational expression respectively：3.5<|f12/f|<4.70 3.6<|f13/f|<9.0.In the present invention, camera lens is last
Two pieces of lens positive light coke eyeglasses make to reach its object is to be focused at the divergent rays of front optical system in image planes
The light of image planes has lesser chief ray angle, meets the requirement of different CCD, avoids the generation of colour cast phenomenon.
The F-number F of a scheme according to the present invention, wide-angle lens meets：F≤2.0.There is camera lens logical
The high feature of light quantity.
Detailed description of the invention
Fig. 1 schematically shows the structural plan of wide-angle lens according to embodiment 1 of the present invention；
Fig. 2 schematically shows that according to the present invention is the aberration diagram of embodiment 1；
Fig. 3 schematically shows that according to the present invention is the distortion figure of embodiment 1；
Fig. 4 schematically shows that according to the present invention is the chromatic longitudiinal aberration figure of embodiment 1；
Fig. 5 schematically shows the structural plan of wide-angle lens according to embodiment 2 of the present invention；
Fig. 6 schematically shows that according to the present invention is the aberration diagram of embodiment 2；
Fig. 7 schematically shows that according to the present invention is the distortion figure of embodiment 2；
Fig. 8 schematically shows that according to the present invention is the chromatic longitudiinal aberration figure of embodiment 2；
Fig. 9 schematically shows the structural plan of wide-angle lens according to embodiment 3 of the present invention；
Figure 10 schematically shows that according to the present invention is the aberration diagram of embodiment 3；
Figure 11 schematically shows that according to the present invention is the distortion figure of embodiment 3；
Figure 12 schematically shows that according to the present invention is the chromatic longitudiinal aberration figure of embodiment 3；
Figure 13 schematically shows the structural plan of wide-angle lens according to embodiment 4 of the present invention；
Figure 14 schematically shows that according to the present invention is the aberration diagram of embodiment 4；
Figure 15 schematically shows that according to the present invention is the distortion figure of embodiment 4；
Figure 16 schematically shows that according to the present invention is the chromatic longitudiinal aberration figure of embodiment 4.
Specific embodiment
It, below will be to embodiment in order to illustrate more clearly of embodiment of the present invention or technical solution in the prior art
Needed in attached drawing be briefly described.It should be evident that the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skills without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
When being described for embodiments of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
" rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", orientation or positional relationship is to be based on expressed by "outside"
Orientation or positional relationship shown in relevant drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indicate or
Imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned term is not
It can be interpreted as limitation of the present invention.
The present invention is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot go to live in the household of one's in-laws on getting married one by one herein
It states, but therefore embodiments of the present invention are not defined in following implementation.
The present invention provides a kind of wide-angle lens, wide-angle lens according to the present invention include along optical axis from object side to image side successively
Ten three pieces lens of arrangement, ten three pieces lens are respectively：First lens 1, the second lens 2, the third lens 3, the 4th lens 4,
Five lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8, the 9th lens 9, the tenth lens 10, the 11st lens the 11, the tenth
Two lens 12 and the 13rd lens 13.It further include diaphragm S, diaphragm S is between the 9th lens 9 and the tenth lens 10.
In the present invention, the 6th lens 6 and the 7th lens 7 constitute cemented doublet group.Tenth lens 10 and the 11st lens
11 constitute cemented doublet group.
In the present invention, wide-angle lens further includes the glass protection ball cover 14 positioned at 1 object side of the first lens.In wide-angle lens
Ten three pieces lens be spherical lens.
In the present invention, the first lens 1, the second lens 2, the third lens 3, the 5th lens 5, the 7th lens 7 and the 11st
Lens 11 are negative-power lenses；
4th lens 4, the 6th lens 6, the 8th lens 8, the 9th lens 9, the tenth lens 10, the 12nd lens 12 and the tenth
Three lens 13 are positive power lens.
Above-mentioned setting according to the present invention can reach using 1 glass protection ball cover and 13 glass lens, field angle
182 or more, it is seen that light resolution ratio can reach ten million pixel, have good market prospects, open up the new of industrial lens application
Field.
In the present invention, the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens
6, the 7th lens 7, the 8th lens 8, the 9th lens 9, the tenth lens 10 and the 11st lens 11 collectively constitute the first lens group A,
12nd lens 12 and the 13rd lens 13 form the second lens group B；Also, the focal length FA and the second lens of the first lens group A
The focal length FB of group B and the focal length f of wide-angle lens meet relational expression respectively：2.8<|FA/f|<11.2 2.2<|FB/f|<3.0.Such as
This setting, so that being grouped between the 11st lens 11 and the 12nd lens 12, focal power distribution is more reasonable, can effectively subtract
Mini system overall length and the tolerance sensitivity for reducing preceding group.
In the present invention, the R value R1_2 of 1 image side surface of the optics effective diameter SD2 of the first lens 1 and the first lens meets relationship
Formula：1.8<SD2/R1_2<2.0.So set, can satisfy the wide angular range imaging requirements of wide-angle lens, while the first lens
Distortion aberration contribution amount it is maximum, have corrective action to systematical distortion.
In the present invention, along optical axis from object side to image side, the first lens 1, the second lens 2 and the third lens 3 are that male-female is saturating
Mirror；Also, the coke of the focal length f1 of the first lens 1, the focal length f3 of the focal length f2 of the second lens 2 and the third lens 3 and wide-angle lens
Meet relational expression respectively away from f：6.2<|f1/f|<8.8,8.8<|f2/f|<14.6 6.3<|f3/f|<7.7.So set, making
Focal power obtains an equitable breakdown, and plays the role of the big field angle light of convergence, and effectively correct off-axis aberration.
In the present invention, focal length f (6,7), the tenth lens for the cemented doublet group that the 6th lens 6 and the 7th lens 7 are constituted
The focal length f (10,11) of cemented doublet group and the focal length f of wide-angle lens that 10 and the 11st lens 11 are constituted meet relationship respectively
Formula：4.0<|f(6,7)/f|<4.8,3.1<|f(10,11)/f|<3.7.In the present invention, the 6th lens and the 7th lens and
The cemented doublet of tenth lens and the 11st lens composition can reduce the tolerance sensitivities of single eyeglass, it is often more important that have
Imitate the effect of the aberrations such as astigmatism, the curvature of field, the color difference of correction system.
In the present invention, the Abbe number vd10 of the tenth lens 10 and the Abbe number vd11 of the 11st lens 11 meet respectively：
70.0<vd10<95.2 17.0<vd11<25.0.In the present invention, using the difference of Abbe number, abbe number is differed greatly
Two pieces of lens combinations at cemented doublet, the efficiency of correcting chromatic aberration is effectively improved.
In the present invention, the 6th lens 6 are constituted using weight fluorine material, and the tenth lens 10 are constituted using low-dispersion material；And
And the 6th the refractive index nd6 and the refractive index nd10 of the tenth lens 10 of lens 6 meet respectively：1.7<nd6<1.9,1.4<nd10<
1.6.So set, main purpose is to utilize this two pieces refractive index temperatures that lens powers are bigger and two kinds of materials are special
Characteristic solves the temperature drift problems under extreme working temperature environment, in -40 DEG C of -80 DEG C of operating temperature ranges, clearly at
Picture makes camera lens under different temperatures environment, keeps the high consistency of solution picture.
In the present invention, along optical axis from object side to image side, the 9th lens 9 be concave-convex lens with positive light coke or
Plate-convex lens, the tenth lens 10 are the biconvex lens with positive light coke；Also, the focal length f9 and the tenth lens of the 9th lens 9
10 focal length f10 and the focal length f of wide-angle lens meet relational expression respectively：5.7<|f9/f|<7.1,3.3<|f10/f|<4.0.Such as
This setting, so that using two pieces of biconvex eyeglasses before and after diaphragm, chief ray height is high, requires, has enough meeting large aperture
While light passing amount, optical system is without vignetting, and relative illumination may be up to 85%, and shoot on location field of view edge is not in dark angle.
In the present invention, along optical axis from object side to image side, the 12nd lens 12 are biconvex lens, and the 13rd lens 13 are double
Convex lens or plate-convex lens；Also, the focal length f12 of the 12nd lens 12 and the focal length f13 and wide-angle lens of the 13rd lens 13
The focal length of head meets relational expression respectively：3.5<|f12/f|<4.70 3.6<|f13/f|<9.0.In the present invention, camera lens last two
Piece lens positive light coke eyeglass makes to reach picture its object is to be focused at the divergent rays of front optical system in image planes
The light in face has lesser chief ray angle, meets the requirement of different CCD, avoids the generation of colour cast phenomenon.
In the present invention, the F-number F of wide-angle lens meets：F≤2.0.The spy for making camera lens have light passing amount high in this way
Point.
In addition, in the present invention, whole (the first lens group A and the second lens group B) linear movement of wide-angle lens, after causing
Burnt (distances of the image planes of the 13rd lens 13 to wide-angle lens) are mobile, by burnt after movement, to realize to different object distances focusing
Purpose.
It is according to the present invention wide to illustrate to provide four groups of specific embodiments below according to above-mentioned setting of the invention
Angle mirror head.
Data in four groups of embodiment data such as the following table 1：
Table 1
Embodiment one：
Fig. 1 schematically shows the structural plan of wide-angle lens according to embodiment 1 of the present invention.
According to the data that embodiment 1 provides in table 1, each parameter in the wide-angle lens of present embodiment is as follows：
FA=12.99；FB=10.35；F1=-40.21；F2=-40.55；F3=-30.91；F4=41.13；F5=-
11.55；F6=12.39；F7=-35.35；F8=37.85；F9=26.8；F10=15.45；F11=-7.12；F12=
21.09；F13=16.55；SD2=32.09.
Wide-angle lens according to the present embodiment, lens system parameter are：Object distance is 342mm, the overall length of optical lens
For 84.88mm, lens focus 4.57mm, aperture 2.0, diagonal direction field angle is 182 °.
In the present embodiment, in the parameters such as each lens surface type, surface curvature radius, thickness, material such as the following table 2
Data：
Table 2
Fig. 2, Fig. 3, Fig. 4 schematically show that according to the present invention is aberration diagram, distortion figure, the chromatic longitudiinal aberration of embodiment 1
Figure.
By Fig. 2 and Fig. 4, it can be seen that wide-angle lens according to embodiment 1 of the present invention, every aberration have obtained sufficiently
Correction.And by Fig. 3, it can be seen that F- θ may be implemented in wide-angle lens according to embodiment 1 of the present invention<2.5% distortion
Performance reduces distortion, is convenient for image procossing.
Embodiment two：
Fig. 5 schematically shows the structural plan of wide-angle lens according to embodiment 2 of the present invention.
According to the data that embodiment 2 provides in table 1, each parameter in the wide-angle lens of present embodiment is as follows：
FA=29.63；FB=13.56；F1=-34.56；F2=-51.3；F3=-34.83；F4=44.89；F5=-
11.51；F6=12.34；F7=-34.97；F8=46.43；F9=30.658；F10=17.49；F11=-7.92；F12=
20.16；F13=34.62；SD2=29.30.
Wide-angle lens according to the present embodiment, lens system parameter are：Object distance is 342mm, the overall length of optical lens
For 83.76mm, lens focus 4.56mm, aperture 1.9, diagonal direction field angle is 182 °.
In the present embodiment, in the parameters such as each lens surface type, surface curvature radius, thickness, material such as the following table 3
Data：
Table 3
Fig. 6, Fig. 7, Fig. 8 schematically show that according to the present invention is aberration diagram, distortion figure, the chromatic longitudiinal aberration of embodiment 2
Figure.
By Fig. 6 and Fig. 8, it can be seen that wide-angle lens according to embodiment 2 of the present invention, every aberration have obtained sufficiently
Correction.And by Fig. 7, it can be seen that F- θ may be implemented in wide-angle lens according to embodiment 2 of the present invention<2.5% distortion
Performance reduces distortion, is convenient for image procossing.
Embodiment three：
Fig. 9 schematically shows the structural plan of wide-angle lens according to embodiment 3 of the present invention.
According to the data that embodiment 3 provides in table 1, each parameter in the wide-angle lens of present embodiment is as follows：
FA=26.805；FB=13.118；F1=-32.39；F2=-54.13；F3=-34.63；F4=45.84；f5
=-11.73；F6=11.29；F7=-27.32；F8=46.97；F9=26.31；F10=16.56；F11=-7.21；F12=
19.08；F13=35.38；SD2=26.15.
Wide-angle lens according to the present embodiment, lens system parameter are：Object distance is 342mm, the overall length of optical lens
It is 80, lens focus 4.58mm, aperture 2.0, diagonal direction field angle is 182 °.
In the present embodiment, in the parameters such as each lens surface type, surface curvature radius, thickness, material such as the following table 4
Data：
Table 4
Figure 10, Figure 11, Figure 12 schematically show that according to the present invention is aberration diagram, distortion figure, the vertical axis color of embodiment 3
Difference figure.
By Figure 10 and Figure 12, it can be seen that wide-angle lens according to embodiment 3 of the present invention, every aberration are filled
The correction divided.And by Figure 11, it can be seen that F- θ may be implemented in wide-angle lens according to embodiment 3 of the present invention<2.5%
Distort performance, reduces distortion, is convenient for image procossing.
Embodiment four：
Figure 13 schematically shows the structural plan of wide-angle lens according to embodiment 4 of the present invention.
According to the data that embodiment 4 provides in table 1, each parameter in the wide-angle lens of present embodiment is as follows：
FA=51.34；FB=12.38；F1=-28.70；F2=-66.57；F3=-29.13；F4=40.77；F5=-
11.17；F6=10.53；F7=-27.28；F8=46.961；F9=26.22；F10=16.66；F11=-7.04；F12=
16.26；F13=41.21；SD2=25.11.
Wide-angle lens according to the present embodiment, lens system parameter are：Object distance is 342mm, the overall length of optical lens
For 79.5mm, lens focus 4.58mm, aperture 2.0, diagonal direction field angle is 182 °.
In the present embodiment, in the parameters such as each lens surface type, surface curvature radius, thickness, material such as the following table 5
Data：
Table 5
Figure 14, Figure 15, Figure 16 schematically show that according to the present invention is aberration diagram, distortion figure, the vertical axis color of embodiment 4
Difference figure.
By Figure 14 and Figure 16, it can be seen that wide-angle lens according to embodiment 4 of the present invention, every aberration are filled
The correction divided.And by Figure 15, it can be seen that F- θ may be implemented in wide-angle lens according to embodiment 4 of the present invention<2.5%
Distort performance, reduces distortion, is convenient for image procossing.
The foregoing is merely a schemes of the invention, are not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of wide-angle lens, including：Ten three pieces lens being arranged successively along optical axis from object side to image side, respectively：First thoroughly
Mirror (1), the second lens (2), the third lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th lens
(7), the 8th lens (8), the 9th lens (9), the tenth lens (10), the 11st lens (11), the 12nd lens (12) and the tenth
Three lens (13)；
It further include diaphragm (S), the diaphragm (S) is between the 9th lens (9) and the tenth lens (10)；Its feature
It is,
6th lens (6) and the 7th lens (7) constitute cemented doublet group；
Tenth lens (10) and the 11st lens (11) constitute cemented doublet group.
2. wide-angle lens according to claim 1, which is characterized in that further include being located at the first lens (1) object side
Glass protection ball cover (14).
3. wide-angle lens according to claim 1, which is characterized in that ten three pieces lens in the wide-angle lens are ball
Face lens.
4. wide-angle lens according to claim 1, which is characterized in that first lens (1), second lens (2),
The third lens (3), the 5th lens (5), the 7th lens (7) and the 11st lens (11) are negative power
Lens；
4th lens (4), the 6th lens (6), the 8th lens (8), the 9th lens (9), the described tenth
Lens (10), the 12nd lens (12) and the 13rd lens (13) are positive power lens.
5. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that first lens (1) to the described tenth
One lens (11) form the first lens group (A), and the 12nd lens (12) and the 13rd lens (13) composition second are thoroughly
Microscope group (B)；
The focal length f of the focal length FA of first lens group (A) and the focal length FB of second lens group (B) and the wide-angle lens
Meet relational expression respectively：2.8<|FA/f|<11.2 2.2<|FB/f|<3.0.
6. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that the optics of first lens (1) is effective
The R value R1_2 of diameter SD2 and the first lens (1) image side surface meets relational expression：1.8<SD2/R1_2<2.0.
7. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that along optical axis from object side to image side, described
One lens (1), second lens (2) and the third lens (3) are male-female lens；Also,
The focal length f3 of the focal length f1 of first lens (1), the focal length f2 of second lens (2) and the third lens (3)
Meet relational expression respectively with the focal length f of the wide-angle lens：6.2<|f1/f|<8.8,8.8<|f2/f|<14.6 6.3<|f3/f|
<7.7。
8. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that the 6th lens (6) and the described 7th
Focal length f (6,7), the tenth lens (10) and the 11st lens (11) for the cemented doublet group that lens (7) are constituted are constituted
The focal length f (10,11) of cemented doublet group and the focal length f of the wide-angle lens meet relational expression respectively：4.0<|f(6,7)/f|<
4.8,3.1<|f(10,11)/f|<3.7.
9. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that the Abbe number of the tenth lens (10)
Vd10 and the Abbe number vd11 of the 11st lens (11) meet respectively：70.0<vd10<95.2 17.0<vd11<25.0.
10. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that the 6th lens (6) are using weight fluorine
Material is constituted, and the tenth lens (10) are constituted using low-dispersion material；Also,
The refractive index nd6 of 6th lens (6) and the refractive index nd10 of the tenth lens (10) meet respectively：1.7<nd6<
1.9,1.4<nd10<1.6.
11. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that described along optical axis from object side to image side
9th lens (9) are concave-convex lens or plate-convex lens with positive light coke, and the tenth lens (10) are with positive light
The biconvex lens of focal power；Also,
Focal length f points of the focal length f9 of 9th lens (9) and the focal length f10 of the tenth lens (10) and the wide-angle lens
Relational expression is not met：5.7<|f9/f|<7.1,3.3<|f10/f|<4.0.
12. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that described along optical axis from object side to image side
12nd lens (12) are biconvex lens, and the 13rd lens (13) are biconvex lens or plate-convex lens；Also,
The focal length f12 of 12nd lens (12) and the focal length f13 of the 13rd lens (13) and the wide-angle lens
Focal length meets relational expression respectively：3.5<|f12/f|<4.70 3.6<|f13/f|<9.0.
13. according to claim 1 to wide-angle lens described in one of 4, which is characterized in that the F-number F of the wide-angle lens is full
Foot：F≤2.0.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114089508A (en) * | 2022-01-19 | 2022-02-25 | 茂莱（南京）仪器有限公司 | Wide-angle projection lens for detecting optical waveguide AR lens |
| CN116299971A (en) * | 2023-03-02 | 2023-06-23 | 广州长步道光学科技有限公司 | High Wen Jingtou of wide angle high resolution |
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| CN208737083U (en) * | 2018-08-28 | 2019-04-12 | 舜宇光学(中山)有限公司 | Wide-angle lens |
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| CN114089508A (en) * | 2022-01-19 | 2022-02-25 | 茂莱（南京）仪器有限公司 | Wide-angle projection lens for detecting optical waveguide AR lens |
| CN116299971A (en) * | 2023-03-02 | 2023-06-23 | 广州长步道光学科技有限公司 | High Wen Jingtou of wide angle high resolution |
| CN116299971B (en) * | 2023-03-02 | 2024-02-02 | 广州长步道光学科技有限公司 | High Wen Jingtou of wide angle high resolution |
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