CN106970454A - The infrared Single wavelength lens set of four-piece type - Google Patents
The infrared Single wavelength lens set of four-piece type Download PDFInfo
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- CN106970454A CN106970454A CN201610023232.8A CN201610023232A CN106970454A CN 106970454 A CN106970454 A CN 106970454A CN 201610023232 A CN201610023232 A CN 201610023232A CN 106970454 A CN106970454 A CN 106970454A
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- piece type
- single wavelength
- focal length
- infrared single
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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
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
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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
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present invention is a kind of infrared Single wavelength lens set of four-piece type, is sequentially included by thing side to image side：First lens, with refracting power；Aperture；Second lens, with positive refracting power；3rd lens, with positive refracting power；4th lens, with positive refracting power；Wherein the focal length of the first lens is f1, and the synthesis focal length of the second lens and the 3rd lens is f23, and meets following condition：-210<f1/f23<365.When f1/f23 meets above-mentioned condition, then it can make the infrared Single wavelength lens set of four-piece type while extensive picture angle (angle of visual field) is obtained, the significant lifting of its resolving power.
Description
Technical field
The present invention relates to lens set, more particularly to a kind of infrared Single wavelength eyeglass of miniaturization four-piece type applied on electronic product
Group.
Background technology
Digital audio-effect processing is constantly brought forth new ideas, changed now, particularly digital camera and mobile phone etc. digital carrier all towards small
Typeization develops, and photosensory assembly such as CCD or CMOS is also required smallerization, in infrared ray focusing lens application, except
Apply in photography, infrared receiver and the sensing field of game machine are also largely diverted in recent years, and to make its game machine
Sense user scope it is broader, the lens set of current receiving infrared-ray wavelength, mostly using draw the larger broad angle lens group in angle as
Main flow.
Wherein, applicant is previously it is also proposed that the lens set that the relevant IR wavelength of more than one piece is received, but game machine is more to stand at present
Based on body, the 3D game of true and telepresenc, therefore the just current or previous lens set of applicant, all played and detected with 2D plane
To require, so that can not meet the depth feelings that stress of 3D game answers effect.
Furthermore, about the special infrared receiver of game machine, sensing lens set, glass lens, one are used for pursuit is cheap
Poor material translucency is one of influence game machine depth insufficient detection precision key element, and two carry out glass lens easily in environment temperature
Spend heat or supercooling so that lens set focal length change and can not exact focus detecting, as described above, being current IR wavelength
The lens set of reception can not meet the two big technical tasks that 3D game depth distances accurately sense.
In view of this, how a kind of accurate depth distance detecting is provided, is received, and prevents lens set focal length from changing influence depth
Effect is detected, the lens set technical bottleneck suddenly to be overcome at present received then for IR wavelength.
The content of the invention
It is an object of the invention to provide a kind of infrared Single wavelength lens set of four-piece type, espespecially a kind of lifting picture angle, the high parsing energy of tool
Power, short lens length, the infrared Single wavelength lens set of four-piece type of small distortion.
In order to reach object defined above, a kind of infrared Single wavelength lens set of four-piece type is provided according to the present invention, by thing side to image side sequentially
Comprising：First lens, with refracting power, it is convex surface at concave surface, its image side surface dipped beam axle to be at its thing side surface dipped beam axle,
Its thing side surface is aspherical with an image side surface at least surface；Aperture；Second lens, with positive refracting power, its thing side surface
It is convex surface at convex surface, its image side surface dipped beam axle to be at dipped beam axle, and its thing side surface is aspherical with an image side surface at least surface；
3rd lens, with positive refracting power, it is convex surface, its thing at concave surface, its image side surface dipped beam axle to be at its thing side surface dipped beam axle
Side surface is aspherical with an image side surface at least surface；4th lens, with positive refracting power, be at its thing side surface dipped beam axle
It is concave surface at convex surface, its image side surface dipped beam axle, its thing side surface is aspherical with an image side surface at least surface；
Wherein the focal length of the first lens is f1, and the synthesis focal length of the second lens and the 3rd lens is f23, and meets following condition：
-210<f1/f23<365。
When f1/f23 meets above-mentioned condition, then the infrared Single wavelength lens set of four-piece type can be made to obtain extensive picture angle (angle of visual field)
While, the significant lifting of its resolving power.
It is preferred that the focal length of the first lens is f1, the focal length of the second lens is f2, and meets following condition：-230<f1/f2<390.
Thus, make the refracting power configuration of the first lens and the second lens more suitable, can be conducive to obtaining it is extensive draw angle (angle of visual field) and
Reduce the excessive increase of system aberration.
It is preferred that the focal length of the 3rd lens is f3, the focal length of the second lens is f2, and meets following condition：3.5<f3/f2<86.
Thus, can lifting system periphery resolving power and illumination.
It is preferred that the focal length of the 3rd lens is f3, the focal length of the 4th lens is f4, and meets following condition：0.5<f3/f4<39.
Thus, can active balance system refracting power configuration, contribute to desensitising to lift fine ratio of product.
It is preferred that the focal length of the first lens is f1, the focal length of the 3rd lens is f3, and meets following condition：-55<f1/f3<100.
Thus, the positive refracting power of the first lens is effectively distributed, the susceptibility of the infrared Single wavelength lens set of four-piece type is reduced.
It is preferred that the focal length of the second lens is f2, the focal length of the 4th lens is f4, and meets following condition：0.05<f2/f4<0.6.
Thus, the positive refracting power distribution of system is more suitable, is conducive to update the system aberration to improve system imaging quality.
It is preferred that the focal length of the 3rd lens is f3, the synthesis focal length of the first lens and the second lens is f12, and meets following bar
Part：3.5<f3/f12<93.Thus, it can be conducive to obtaining extensive picture angle (angle of visual field) and effectively correct curvature of the image.
It is preferred that the synthesis focal length of the first lens and the second lens is f12, the synthesis focal length of the 3rd lens and the 4th lens is f34,
And meet following condition：0.35<f12/f34<0.65.Thus, it can be conducive to obtaining extensive picture angle (angle of visual field) and effectively amendment
Curvature of the image.
It is preferred that the focal length of the first lens is f1, the synthesis focal length of the second lens, the 3rd lens and the 4th lens is f234, and
Meet following condition：-280<f1/f234<480.Thus, it can be conducive to obtaining extensive picture angle (angle of visual field) and effectively correct picture
Face is bent.
It is preferred that the maximum field of view angle of the infrared Single wavelength lens set of four-piece type is FOV, and meet following condition：45<FOV<75.
Thus, the infrared Single wavelength lens set of four-piece type is made to have appropriate larger field angle.
It is preferred that the second lens are CT2 in the thickness on optical axis, the second lens are in the spacing distance on optical axis with the 3rd lens
T23, and meet following condition：1.5<CT2/T23<2.6.Thus, the spacing between the thickness and lens of the second lens of distribution,
The total length of overall lens system can be shortened.
It is preferred that the second lens and the 3rd lens are T23 in the spacing distance on optical axis, the 3rd lens are in the thickness on optical axis
CT3, and meet following condition：0.6<T23/CT3<1.3.Thus, system off-axis incident light passes through the second lens and the 3rd
The height of lens is relatively large so that the 3rd lens have abundance ability go correct the infrared Single wavelength lens set of four-piece type the curvature of field,
Distortion and coma, in favor of correcting the quality of image.
It is preferred that the 3rd lens are CT3 in the thickness on optical axis, the 3rd lens are in the spacing distance on optical axis with the 4th lens
T34, and meet following condition：7<CT3/T34<12.5.Thus, the spacing between the thickness and lens of the 3rd lens of distribution,
The total length of overall lens system can be shortened.
It is preferred that the abbe number of the second lens is V2, the abbe number of the 3rd lens is V3, and meets following condition：30<
V2-V3<42.Thus, the aberration of update the system can be conducive to.
It is preferred that the f-number of the infrared Single wavelength lens set of four-piece type is Fno, and meet following condition：1.2<Fno<1.8.
Thus, the aperture size of the infrared Single wavelength lens set of four-piece type can be suitably adjusted, there is the infrared Single wavelength lens set of four-piece type big
The characteristic of aperture.
The relevant present invention is reaches above-mentioned purpose, technology, means and the other effects used, and hereby act five is preferably feasible to be implemented
Example simultaneously coordinates schema to describe in detail as after.
Brief description of the drawings
Figure 1A is the schematic diagram of the infrared Single wavelength lens set of four-piece type of embodiments of the invention one.
Figure 1B is sequentially spherical aberration, astigmatism and the distortion curve map of the infrared Single wavelength lens set of four-piece type of embodiment one from left to right.
Fig. 2A is the schematic diagram of the infrared Single wavelength lens set of four-piece type of embodiments of the invention two.
Fig. 2 B are sequentially spherical aberration, astigmatism and the distortion curve map of the infrared Single wavelength lens set of four-piece type of embodiment two from left to right.
Fig. 3 A are the schematic diagram of the infrared Single wavelength lens set of four-piece type of embodiments of the invention three.
Fig. 3 B are sequentially spherical aberration, astigmatism and the distortion curve map of the infrared Single wavelength lens set of four-piece type of embodiment three from left to right.
The schematic diagram of the infrared Single wavelength lens set of four-piece type of the non-embodiments of the invention four of Fig. 4 A.
Fig. 4 B are sequentially spherical aberration, astigmatism and the distortion curve map of the infrared Single wavelength lens set of four-piece type of example IV from left to right.
Fig. 5 A are the schematic diagram of the infrared Single wavelength lens set of four-piece type of embodiments of the invention five.
Fig. 5 B are sequentially spherical aberration, astigmatism and the distortion curve map of the infrared Single wavelength lens set of four-piece type of embodiment five from left to right.
Sign flag explanation in accompanying drawing：
100、200、300、400、500：Aperture；
110、210、310、410、510：First lens；
111、211、311、411、511：Thing side surface；
112、212、312、412、512：Image side surface；
120、220、320、420、520：Second lens；
121、221、321、421、521：Thing side surface；
122、222、322、422、522：Image side surface；
130、230、330、430、530：3rd lens；
131、231、331、431、531：Thing side surface；
132、232、332、432、532：Image side surface；
140、240、340、440、540：4th lens；
141、241、341、441、541：Thing side surface；
142、242、342、442、542：Image side surface；
170、270、370、470、570：Infrared ray filters out filtering assembly；
180、280、380、480、580：Imaging surface；
190、290、390、490、590：Optical axis；
f：The focal length of the infrared Single wavelength lens set of four-piece type；
Fno：The f-number of the infrared Single wavelength lens set of four-piece type；
FOV：Maximum field of view angle in the infrared Single wavelength lens set of four-piece type；
f1：The focal length of first lens；
f2：The focal length of second lens；
f3：The focal length of 3rd lens；
f4：The focal length of 4th lens；
f12：The synthesis focal length of first lens and the second lens；
f23：The synthesis focal length of second lens and the 3rd lens；
f34：The synthesis focal length of 3rd lens and the 4th lens；
f234：The synthesis focal length of second lens, the 3rd lens and the 4th lens；
V2：The abbe number of second lens；
V3：The abbe number of 3rd lens；
CT2：Second lens are in the thickness on optical axis；
CT3：3rd lens are in the thickness on optical axis；
T23：Second lens and the 3rd lens are in the spacing distance on optical axis；
T34：3rd lens and the 4th lens are in the spacing distance on optical axis.
Embodiment
Clear, complete description is carried out to technical scheme below in conjunction with accompanying drawing, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
Figure 1A and Figure 1B is refer to, wherein Figure 1A is illustrated according to the infrared Single wavelength lens set of the four-piece type of the embodiment of the present invention one
Schematic diagram, Figure 1B is sequentially spherical aberration, astigmatism and the distortion of the infrared Single wavelength lens set of four-piece type of embodiment one from left to right
Curve map.From Figure 1A, the infrared Single wavelength lens set of four-piece type includes aperture 100 and optics group, and optics group is by thing side
Sequentially filtered out to image side comprising the first lens 110, the second lens 120, the 3rd lens 130, the 4th lens 140, infrared ray
The lens for having refracting power in the infrared Single wavelength lens set of optical assembly 170 and imaging surface 180, wherein four-piece type are four.Aperture
100 are arranged between the image side surface 122 of the lens 120 of image side surface 112 and second of the first lens 110.
First lens 110 have negative refracting power, and it is concave surface at plastic material, its dipped beam axle 190 of thing side surface 111 to be, its
It is convex surface at the dipped beam axle 190 of image side surface 112, and thing side surface 111 and image side surface 112 are all aspherical.
Second lens 120 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 190 of thing side surface 121 to be, its
It is convex surface at the dipped beam axle 190 of image side surface 122, and thing side surface 121 and image side surface 122 are all aspherical.
3rd lens 130 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 190 of thing side surface 131 to be, its
It is convex surface at the dipped beam axle 190 of image side surface 132, and thing side surface 131 and image side surface 132 are all aspherical.
4th lens 140 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 190 of thing side surface 141 to be, its
It is concave surface at the dipped beam axle 190 of image side surface 142, and thing side surface 141 and image side surface 142 are all aspherical.
Infrared ray filters out filtering assembly 170 for glass material, and it is arranged between the 4th lens 140 and imaging surface 180 and not influenceed
The focal length of the infrared Single wavelength lens set of four-piece type.
The aspherical fitting equation of above-mentioned each lens is expressed as follows：
Wherein z is the positional value for making to refer to surface vertices in the position that height is h along the direction of optical axis 190；C is that lens surface is leaned on
The curvature of dipped beam axle 190, and be the inverse (c=1/R) of radius of curvature (R), R is radius of curvature of the lens surface close to optical axis 190,
H is vertical range of the lens surface apart from optical axis 190, and k is circular cone coefficient (conic constant), and A, B, C, D, E,
G ... it is order aspherical coefficients.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the infrared Single wavelength lens set of four-piece type is f, and four-piece type is red
The f-number (f-number) of outer Single wavelength lens set is Fno, and maximum field of view angle (picture angle) is in the infrared Single wavelength lens set of four-piece type
FOV, its numerical value is as follows：F=1.241 (millimetre)；Fno=1.4；And FOV=60 (degree).
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal lengths of the first lens 110 is f1, the second lens 120 and the
The synthesis focal length of three lens 130 is f23, and meets following condition：F1/f23=-24.071.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the first lens 110 is f1, Jiao of the second lens 120
Away from for f2, and meet following condition：F1/f2=-29.133.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the 3rd lens 130 is f3, Jiao of the second lens 120
Away from for f2, and meet following condition：F3/f2=22.598.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the 3rd lens 130 is f3, Jiao of the 4th lens 140
Away from for f4, and meet following condition f3/f4=8.144.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the first lens 110 is f1, Jiao of the 3rd lens 130
Away from for f3, and meet following condition：F1/f3=-1.289.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal length of the second lens 120 is f2, Jiao of the 4th lens 140
Away from for f4, and meet following condition：F2/f4=0.360.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal lengths of the 3rd lens 130 is f3, the first lens 110 and the
The synthesis focal length of two lens 120 is f12, and meets following condition：F3/f12=23.929.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the synthesis focal length of the first lens 110 and the second lens 120 is f12,
The synthesis focal length of 3rd lens 130 and the 4th lens 140 is f34, and meets following condition：F12/f34=0.476.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the focal lengths of the first lens 110 is f1, the second lens 120, the
The synthesis focal length of three lens 130 and the 4th eyeglass 140 is f234, and meets following condition：F1/f234=-36.974.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the second lens 120 are CT2 in the thickness on optical axis 180, the
Two lens 120 and the 3rd lens 130 are T23 in the spacing distance on optical axis 190, and meet following condition：CT2/T23=
2.407。
In the infrared Single wavelength lens set of four-piece type of embodiment one, the second lens 120 and the 3rd lens 130 are on optical axis 190
Spacing distance is T23, and the 3rd lens 130 are CT3 in the thickness on optical axis 180, and meet following condition：T23/CT3=0.780.
In the infrared Single wavelength lens set of four-piece type of embodiment one, the 3rd lens 130 are CT3 in the thickness on optical axis 180, the
Three lens 130 and the 4th lens 140 are T34 in the spacing distance on optical axis 190, and meet following condition：CT3/T34=
10.635。
In the infrared Single wavelength lens set of four-piece type of embodiment one, the abbe number of the second lens 120 is V2, the 3rd lens 130
Abbe number be V3, and meet following condition：V2-V3=32.03.
Coordinate again with reference to following table 1 and table 2.
Table 1 is the detailed structured data of Figure 1A embodiments one, and the wherein unit of radius of curvature, thickness and focal length is mm, and table
Face 0-13 is sequentially represented by the surface of thing side to image side.Table 2 is the aspherical surface data in embodiment one, wherein, k tables are aspherical
Conical surface coefficient in fitting equation, A, B, C, D, E, F, G, H ... are order aspherical coefficients.In addition, following
Each embodiment form is table of the definition of data in the schematic diagram and aberration curve figure of each embodiment of correspondence, form all with embodiment one
1 and table 2 definition it is identical, be not added with repeating herein.
Embodiment two
Fig. 2A and Fig. 2 B are refer to, wherein Fig. 2A is illustrated according to the infrared Single wavelength lens set of the four-piece type of the embodiment of the present invention two
Schematic diagram, Fig. 2 B are sequentially spherical aberration, astigmatism and the distortion of the infrared Single wavelength lens set of four-piece type of embodiment two from left to right
Curve map.From Fig. 2A, the infrared Single wavelength lens set of four-piece type includes aperture 200 and optics group, and optics group is by thing side
Sequentially filtered out to image side comprising the first lens 210, the second lens 220, the 3rd lens 230, the 4th lens 240, infrared ray
The lens for having refracting power in the infrared Single wavelength lens set of optical assembly 270 and imaging surface 280, wherein four-piece type are four.Aperture
200 are arranged between the image side surface 222 of the lens 220 of image side surface 212 and second of the first lens 210.
First lens 210 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 290 of thing side surface 211 to be, its
It is convex surface at the dipped beam axle 290 of image side surface 212, and thing side surface 211 and image side surface 212 are all aspherical.
Second lens 220 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 290 of thing side surface 221 to be, its
It is convex surface at the dipped beam axle 290 of image side surface 222, and thing side surface 221 and image side surface 222 are all aspherical.
3rd lens 230 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 290 of thing side surface 231 to be, its
It is convex surface at the dipped beam axle 290 of image side surface 232, and thing side surface 231 and image side surface 232 are all aspherical.
4th lens 240 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 290 of thing side surface 241 to be, its
It is concave surface at the dipped beam axle 290 of image side surface 242, and thing side surface 241 and image side surface 242 are all aspherical.
Infrared ray filters out filtering assembly 270 for glass material, and it is arranged between the 4th lens 240 and imaging surface 280 and not influenceed
The focal length of the infrared Single wavelength lens set of four-piece type.
Coordinate again with reference to following table 3 and table 4.
In embodiment two, aspherical fitting equation is represented such as the form of embodiment one.In addition, the definition of following table parameter all with
Embodiment one is identical, and not in this to go forth.
Cooperation table 3 and table 4 can extrapolate following data：
Embodiment three
Fig. 3 A and Fig. 3 B are refer to, wherein Fig. 3 A are illustrated according to the infrared Single wavelength eyeglass of the four-piece type of embodiments of the invention three
The schematic diagram of group, Fig. 3 B are sequentially the spherical aberration of the infrared Single wavelength lens set of four-piece type of embodiment three, astigmatism and askew from left to right
Bent curve map.From Fig. 3 A, the infrared Single wavelength lens set of four-piece type includes aperture 300 and optics group, and optics group is by thing
Side to image side is sequentially filtered out comprising the first lens 310, the second lens 320, the 3rd lens 330, the 4th lens 340, infrared ray
The lens for having refracting power in the infrared Single wavelength lens set of filtering assembly 370 and imaging surface 380, wherein four-piece type are four.Light
Circle 300 is arranged between the image side surface 322 of the lens 320 of image side surface 312 and second of the first lens 310.
First lens 310 have negative refracting power, and it is concave surface at plastic material, its dipped beam axle 390 of thing side surface 311 to be, its
It is convex surface at the dipped beam axle 390 of image side surface 312, and thing side surface 311 and image side surface 312 are all aspherical.
Second lens 320 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 390 of thing side surface 321 to be, its
It is convex surface at the dipped beam axle 390 of image side surface 322, and thing side surface 321 and image side surface 322 are all aspherical.
3rd lens 330 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 390 of thing side surface 331 to be, its
It is convex surface at the dipped beam axle 390 of image side surface 332, and thing side surface 331 and image side surface 332 are all aspherical.
4th lens 340 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 390 of thing side surface 341 to be, its
It is concave surface at the dipped beam axle 390 of image side surface 342, and thing side surface 341 and image side surface 342 are all aspherical.
Infrared ray filters out filtering assembly 370 for glass material, and it is arranged between the 4th lens 340 and imaging surface 380 and not influenceed
The focal length of the infrared Single wavelength lens set of four-piece type.
Coordinate again with reference to following table 5 and table 6.
In embodiment three, aspherical fitting equation is represented such as the form of embodiment one.In addition, the definition of following table parameter all with
Embodiment one is identical, and not in this to go forth.
Cooperation table 5 and table 6 can extrapolate following data：
Example IV
Fig. 4 A and Fig. 4 B are refer to, wherein Fig. 4 A are illustrated according to the infrared Single wavelength lens set of the four-piece type of the embodiment of the present invention four
Schematic diagram, Fig. 4 B are sequentially spherical aberration, astigmatism and the distortion of the infrared Single wavelength lens set of four-piece type of example IV from left to right
Curve map.From Fig. 4 A, the infrared Single wavelength lens set of four-piece type includes aperture 400 and optics group, and optics group is by thing side
Sequentially filtered out to image side comprising the first lens 410, the second lens 420, the 3rd lens 430, the 4th lens 440, infrared ray
The lens for having refracting power in the infrared Single wavelength lens set of optical assembly 470 and imaging surface 480, wherein four-piece type are four.Aperture
400 are arranged between the image side surface 422 of the lens 420 of image side surface 412 and second of the first lens 410.
First lens 410 have negative refracting power, and it is concave surface at plastic material, its dipped beam axle 490 of thing side surface 411 to be, its
It is convex surface at the dipped beam axle 490 of image side surface 412, and thing side surface 411 and image side surface 412 are all aspherical.
Second lens 420 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 490 of thing side surface 421 to be, its
It is convex surface at the dipped beam axle 490 of image side surface 422, and thing side surface 421 and image side surface 422 are all aspherical.
3rd lens 430 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 490 of thing side surface 431 to be, its
It is convex surface at the dipped beam axle 490 of image side surface 432, and thing side surface 431 and image side surface 432 are all aspherical.
4th lens 440 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 490 of thing side surface 441 to be, its
It is concave surface at the dipped beam axle 490 of image side surface 442, and thing side surface 441 and image side surface 442 are all aspherical.
Infrared ray filters out filtering assembly 470 for glass material, and it is arranged between the 4th lens 440 and imaging surface 480 and not influenceed
The focal length of the infrared Single wavelength lens set of four-piece type.
Coordinate again with reference to following table 7 and table 8.
In example IV, aspherical fitting equation is represented such as the form of embodiment one.In addition, the definition of following table parameter all with
Embodiment one is identical, and not in this to go forth.
Cooperation table 7 and table 8 can extrapolate following data：
Embodiment five
Fig. 5 A and Fig. 5 B are refer to, wherein Fig. 5 A are illustrated according to the infrared Single wavelength lens set of the four-piece type of the embodiment of the present invention five
Schematic diagram, Fig. 5 B are sequentially spherical aberration, astigmatism and the distortion of the infrared Single wavelength lens set of four-piece type of embodiment five from left to right
Curve map.From Fig. 5 A, the infrared Single wavelength lens set of four-piece type includes aperture 500 and optics group, and optics group is by thing side
Sequentially filtered out to image side comprising the first lens 510, the second lens 520, the 3rd lens 530, the 4th lens 540, infrared ray
The lens for having refracting power in the infrared Single wavelength lens set of optical assembly 570 and imaging surface 580, wherein four-piece type are four.Aperture
500 are arranged between the image side surface 522 of the lens 520 of image side surface 512 and second of the first lens 510.
First lens 510 have negative refracting power, and it is concave surface at plastic material, its dipped beam axle 590 of thing side surface 511 to be, its
It is convex surface at the dipped beam axle 590 of image side surface 512, and thing side surface 511 and image side surface 512 are all aspherical.
Second lens 520 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 590 of thing side surface 521 to be, its
It is convex surface at the dipped beam axle 590 of image side surface 522, and thing side surface 521 and image side surface 522 are all aspherical.
3rd lens 530 have positive refracting power, and it is concave surface at plastic material, its dipped beam axle 590 of thing side surface 531 to be, its
It is convex surface at the dipped beam axle 590 of image side surface 532, and thing side surface 531 and image side surface 532 are all aspherical.
4th lens 540 have positive refracting power, and it is convex surface at plastic material, its dipped beam axle 590 of thing side surface 541 to be, its
It is concave surface at the dipped beam axle 590 of image side surface 542, and thing side surface 541 and image side surface 542 are all aspherical.
Infrared ray filters out filtering assembly 570 for glass material, and it is arranged between the 4th lens 540 and imaging surface 580 and not influenceed
The focal length of the infrared Single wavelength lens set of four-piece type.
Coordinate again with reference to following table 9 and table 10.
In embodiment five, aspherical fitting equation is represented such as the form of embodiment one.In addition, the definition of following table parameter all with
Embodiment one is identical, and not in this to go forth.
Cooperation table 9 and table 10 can extrapolate following data：
The infrared Single wavelength lens set of four-piece type that the present invention is provided, the material of lens can be plastics or glass, when lens material is modeling
Material, can effectively reduce production cost, another when the material of lens is glass, then can increase the infrared Single wavelength lens set of four-piece type
The free degree of refracting power configuration.In addition, the thing side surface and image side surface of lens can be in the infrared Single wavelength lens set of four-piece type
Aspherical, the aspherical shape that can be easily fabricated to beyond sphere obtains more control variable, to cut down aberration, entered
And reduce the number that lens are used, therefore can effectively reduce the total length of the infrared Single wavelength lens set of four-piece type of the present invention.
In the infrared Single wavelength lens set of four-piece type that the present invention is provided, for the lens with refracting power, if lens surface is
Convex surface and when not defining the convex surface position, then it represents that the lens surface is convex surface at dipped beam axle；If lens surface is concave surface and not
When defining the concave surface position, then it represents that the lens surface is concave surface at dipped beam axle.
The infrared more visual demand of Single wavelength lens set of four-piece type that the present invention is provided is applied in the optical system of mobile focusing, and simultaneous
Have the characteristic of excellent lens error correction and good image quality, many-sided can be applied to 3D (three-dimensional) image capture, digital camera, OK
In the electronic image systems such as dynamic device, Digital Drawing plate or automobile-used photography.
In summary, the various embodiments described above and accompanying drawing are only presently preferred embodiments of the present invention, not to limit the present invention's
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should all be included
Within the scope of the present invention.
Claims (15)
1. a kind of infrared Single wavelength lens set of four-piece type, it is characterised in that the infrared Single wavelength lens set of four-piece type by thing side extremely
Image side is sequentially included：
First lens, are concave surface, the picture of first lens at the thing side surface dipped beam axle of first lens with refracting power
It is convex surface at the dipped beam axle of side surface, the thing side surface of first lens is aspherical with a image side surface at least surface；
Aperture；
Second lens, are convex surface at the thing side surface dipped beam axle of second lens with positive refracting power, second lens
It is convex surface at the dipped beam axle of image side surface, thing side surface and the image side surface at least surface of second lens are aspherical；
3rd lens, are concave surface at the thing side surface dipped beam axle of the 3rd lens with positive refracting power, the 3rd lens
It is convex surface at the dipped beam axle of image side surface, thing side surface and the image side surface at least surface of the 3rd lens are aspherical；
4th lens, are convex surface at the thing side surface dipped beam axle of the 4th lens with positive refracting power, the 4th lens
It is concave surface at the dipped beam axle of image side surface, thing side surface and the image side surface at least surface of the 4th lens are aspherical；
The focal length of wherein described first lens is f1, under the synthesis focal lengths of second lens and the 3rd lens is f23, and satisfaction
Row condition：-210<f1/f23<365.
2. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of first lens
For f1, the focal length of second lens is f2, and meets following condition：-230<f1/f2<390.
3. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of the 3rd lens
For f3, the focal length of second lens is f2, and meets following condition：3.5<f3/f2<86.
4. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of the 3rd lens
For f3, the focal length of the 4th lens is f4, and meets following condition：0.5<f3/f4<39.
5. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of first lens
For f1, the focal length of the 3rd lens is f3, and meets following condition：-55<f1/f3<100.
6. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of second lens
For f2, the focal length of the 4th lens is f4, and meets following condition：0.05<f2/f4<0.6.
7. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of the 3rd lens
For f3, the synthesis focal length of first lens and the second lens is f12, and meets following condition：3.5<f3/f12<93.
8. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that first lens and second
The synthesis focal length of lens is f12, and the synthesis focal length of the 3rd lens and the 4th lens is f34, and meets following condition：0.35<
f12/f34<0.65。
9. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the focal length of first lens
For f1, the synthesis focal length of second lens, the 3rd lens and the 4th lens is f234, and meets following condition：-280<f1/f234
<480。
10. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the infrared unicast of four-piece type
The maximum field of view angle of long lens set is FOV, and meets following condition：45<FOV<75.
11. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that second lens are in optical axis
On thickness be CT2, second lens and the 3rd lens are T23 in the spacing distance on optical axis, and meet following condition：
1.5<CT2/T23<2.6。
12. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that second lens and the 3rd
Lens are T23 in the spacing distance on optical axis, and the 3rd lens are CT3 in the thickness on optical axis, and meet following condition：
0.6<T23/CT3<1.3。
13. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the 3rd lens are in optical axis
On thickness be CT3, the 3rd lens and the 4th lens are T34 in the spacing distance on optical axis, and meet following condition：7
<CT3/T34<12.5。
14. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the dispersion of second lens
Coefficient is V2, and the abbe number of the 3rd lens is V3, and meets following condition：30<V2-V3<42.
15. the infrared Single wavelength lens set of four-piece type according to claim 1, it is characterised in that the infrared unicast of four-piece type
The f-number of long lens set is Fno, and meets following condition：1.2<Fno<1.8.
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| CN201610023232.8A CN106970454B (en) | 2016-01-14 | 2016-01-14 | The infrared Single wavelength lens set of four-piece type |
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| CN201610023232.8A CN106970454B (en) | 2016-01-14 | 2016-01-14 | The infrared Single wavelength lens set of four-piece type |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107219610A (en) * | 2017-07-25 | 2017-09-29 | 浙江舜宇光学有限公司 | Imaging lens |
| CN108008525A (en) * | 2018-01-05 | 2018-05-08 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN110161650A (en) * | 2018-02-14 | 2019-08-23 | 新巨科技股份有限公司 | The infrared Single wavelength lens set of four-piece type |
| US11269159B2 (en) | 2017-09-14 | 2022-03-08 | Zhejiang Sunny Optical Co., Ltd. | Optical imaging lens assembly |
| CN116299998A (en) * | 2023-01-28 | 2023-06-23 | 湖北华鑫光电有限公司 | Long depth of field 4P scanning gun camera lens |
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| US20140078602A1 (en) * | 2012-09-18 | 2014-03-20 | Lg Innotek Co., Ltd. | Imaging lens |
| CN103809273A (en) * | 2012-11-09 | 2014-05-21 | 大立光电股份有限公司 | Image capturing lens assembly |
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| CN101082695A (en) * | 2006-05-31 | 2007-12-05 | 富士能株式会社 | Wide-angle imaging lens |
| US20140078602A1 (en) * | 2012-09-18 | 2014-03-20 | Lg Innotek Co., Ltd. | Imaging lens |
| CN103809273A (en) * | 2012-11-09 | 2014-05-21 | 大立光电股份有限公司 | Image capturing lens assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107219610A (en) * | 2017-07-25 | 2017-09-29 | 浙江舜宇光学有限公司 | Imaging lens |
| CN107219610B (en) * | 2017-07-25 | 2022-09-20 | 浙江舜宇光学有限公司 | Imaging lens |
| US11269159B2 (en) | 2017-09-14 | 2022-03-08 | Zhejiang Sunny Optical Co., Ltd. | Optical imaging lens assembly |
| CN108008525A (en) * | 2018-01-05 | 2018-05-08 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN108008525B (en) * | 2018-01-05 | 2023-06-09 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN110161650A (en) * | 2018-02-14 | 2019-08-23 | 新巨科技股份有限公司 | The infrared Single wavelength lens set of four-piece type |
| CN116299998A (en) * | 2023-01-28 | 2023-06-23 | 湖北华鑫光电有限公司 | Long depth of field 4P scanning gun camera lens |
| CN116299998B (en) * | 2023-01-28 | 2023-10-20 | 湖北华鑫光电有限公司 | Long depth of field 4P scanning gun camera lens |
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|---|---|
| CN106970454B (en) | 2019-07-09 |
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