CN105278083A - Wide-angle imaging lens group - Google Patents
Wide-angle imaging lens group Download PDFInfo
- Publication number
- CN105278083A CN105278083A CN201410228373.4A CN201410228373A CN105278083A CN 105278083 A CN105278083 A CN 105278083A CN 201410228373 A CN201410228373 A CN 201410228373A CN 105278083 A CN105278083 A CN 105278083A
- Authority
- CN
- China
- Prior art keywords
- eyeglass
- focal length
- wide
- lens set
- angle image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lenses (AREA)
Abstract
The invention discloses a wide-angle imaging lens group, which sequentially comprises an aperture, a first lens, a second lens, a third lens and a fourth lens from the object side to the image side, and is characterized in that the first lens has positive refraction power, the image side surface of the first lens is a convex surface, and at least one of the object side surface and the image side surface of first lens is an aspheric surface; the second lens has negative refraction power, the image side surface of the second lens is a concave surface, and at least one of the object side surface and the image side surface of the second lens is an aspheric surface; the third lens has positive refraction power, the object side surface of the third lens is a concave surface, and at least one of the object side surface and the image side surface of the third lens is an aspheric surface; and the fourth lens has negative refraction power, the object side surface of the fourth lens is a convex surface, at least one of the object side surface and the image side surface of the fourth lens is an aspheric surface, and at least one of the object side surface and the image side surface of the fourth lens is provided with an inflection point. Therefore, the purposes of improving the field angle and reducing the aberration are achieved.
Description
Technical field
The present invention relates to imaging lens set, refer to a kind of wide-angle image lens set of miniaturization especially.
Background technology
Along with the rise of electronic product with camera function, the demand of optical system day by day improves.In shooting, for obtaining wider coverage, the visual angle of camera lens is needed to meet certain requirements.The picture angle (field angle) of usual camera lens is designed to 50 degree to 60 degree, if exceed the angle of above design, not only aberration is comparatively large, and the design of camera lens is also comparatively complicated.
Therefore, need a kind of wide-angle image lens set of miniaturization, it, except being configurable on the electronic products such as the camera lens of digital still camera use, the camera lens of networking camera use or mobile phone camera lens, having more larger picture angle, reduces effect of aberration, to reduce the complicacy of lens design.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of wide-angle image lens set, and its main lift is drawn angle and cut down aberration simultaneously.
For solving the problem, the invention provides a kind of wide-angle image lens set, sequentially being comprised to image side by thing side: an aperture; First eyeglass of the positive refracting power of one tool, its surface, image side is convex surface, and the thing side surface of this first eyeglass and surface, image side have at least one side to be aspheric surface; One tool bears the second eyeglass of refracting power, and its surface, image side is concave surface, and the thing side surface of this second eyeglass and surface, image side have at least one side to be aspheric surface; 3rd eyeglass of the positive refracting power of one tool, its thing side surface is concave surface, and the thing side surface of the 3rd eyeglass and surface, image side have at least one side to be aspheric surface; One tool bears the 4th eyeglass of refracting power, and its thing side surface is convex surface, and the thing side surface of the 4th eyeglass and surface, image side have at least one side to be aspheric surface, and the thing side surface of the 4th eyeglass and surface, image side have at least one side to have a point of inflexion.
Preferably, the focal length of this first eyeglass is f1, and the focal length of this second eyeglass is f2, and meets following condition :-0.8 < f1/f2 <-0.4.By this, the refracting power of this first eyeglass and this second eyeglass is configured comparatively suitable, can be conducive to obtaining and draw angle (field angle) widely and the excessive increase reducing system aberration.
Preferably, the focal length of this second eyeglass is f2, and the focal length of the 3rd eyeglass is f3, and meets following condition :-3.5 < f2/f3 <-1.2.By this, the refracting power of this second eyeglass and the 3rd eyeglass is configured and comparatively balances, contribute to the correction of aberration and the reduction of susceptibility.
Preferably, the focal length of the 3rd eyeglass is f3, and the focal length of the 4th eyeglass is f4, and meets following condition :-1.2 < f3/f4 <-0.5.By this, be conducive to guaranteeing the 3rd eyeglass and the 4th eyeglass formed positive negative (Telephoto) structure of looking in the distance can effectively reducing system optics total length.
Preferably, the focal length of this first eyeglass is f1, and the focal length of the 3rd eyeglass is f3, and meets following condition: 0.8 < f1/f3 < 2.0.By this, effectively distribute the positive refracting power of the first eyeglass, reduce the susceptibility of wide-angle image lens set.
Preferably, the focal length of this second eyeglass is f2, and the focal length of the 4th eyeglass is f4, and meets following condition: 1.0 < f2/f4 < 3.5.By this, the negative refracting power distribution of system is comparatively suitable, is conducive to update the system aberration to improve system imaging quality.
Preferably, the focal length of this first eyeglass is f1, and the combined focal length of this second eyeglass and the 3rd eyeglass is f23, and meets following condition: 0.5 < f1/f23 < 1.8.By this, then can make this wide-angle image lens set while angle (field angle) is drawn in acquisition widely, its resolving power significantly promotes.
Preferably, the combined focal length of this second eyeglass and the 3rd eyeglass is f23, and the focal length of the 4th eyeglass is f4, and meets following condition :-1.7 < f23/f4 <-0.7.By this, then can make this wide-angle image lens set while angle (field angle) is drawn in acquisition widely, its resolving power significantly promotes.
Preferably, the combined focal length of this first eyeglass and this second eyeglass is f12, and the combined focal length of the 3rd eyeglass and the 4th eyeglass is f34, and meets following condition: 0.1 < f12/f34 < 1.0.By this, acquisition can be conducive to draw angle (field angle) widely and effectively revise curvature of the image.
Preferably, the whole focal length of this wide-angle image lens set is f, and the thing side surface of this first eyeglass is TL to the distance of imaging surface on optical axis, and meets following condition: 0.5 < f/TL < 0.85.By this, can be conducive to obtaining the miniaturization of drawing angle (field angle) widely and being conducive to maintaining this wide-angle image lens set, to be equipped on frivolous electronic product.
Accompanying drawing explanation
Figure 1A is the schematic diagram of the wide-angle image lens set of first embodiment of the invention.
Figure 1B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the first embodiment from left to right and distorts curve map.
Fig. 2 A is the schematic diagram of the wide-angle image lens set of second embodiment of the invention.
Fig. 2 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the second embodiment from left to right and distorts curve map.
Fig. 3 A is the schematic diagram of the wide-angle image lens set of third embodiment of the invention.
Fig. 3 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 3rd embodiment from left to right and distorts curve map.
Fig. 4 A is the schematic diagram of the wide-angle image lens set of fourth embodiment of the invention.
Fig. 4 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 4th embodiment from left to right and distorts curve map.
Fig. 5 A is the schematic diagram of the wide-angle image lens set of fifth embodiment of the invention.
Fig. 5 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 5th embodiment from left to right and distorts curve map.
Description of reference numerals
100,200,300,400,500: aperture
110,210,310,410,510: the first eyeglasses
111,211,311,411,511: thing side surface
112,212,312,412,512: surface, image side
120,220,320,420,520: the second eyeglasses
121,221,321,421,521: thing side surface
122,222,322,422,522: surface, image side
130,230,330,430,530: the three eyeglasses
131,231,331,431,531: thing side surface
132,232,332,432,532: surface, image side
140,240,340,440,540: the four eyeglasses
141,241,341,441,541: thing side surface
142,242,342,442,542: surface, image side
150,250,350,450,550: infrared ray filtering filter element
160,260,360,460,560: imaging surface
170,270,370,470,570: optical axis
F: the whole focal length of wide-angle image lens set
Fno: the overall f-number of wide-angle image lens set
2 ω: the picture angle of wide-angle image lens set
The focal length of the f1: the first eyeglass
The focal length of the f2: the second eyeglass
The focal length of the f3: the three eyeglass
The focal length of the f4: the four eyeglass
The combined focal length of the f12: the first eyeglass and the second eyeglass
The combined focal length of the f23: the second eyeglass and the 3rd eyeglass
The combined focal length of the f34: the three eyeglass and the 4th eyeglass
The thing side surface of the TL: the first eyeglass is to the distance of imaging surface on optical axis
Embodiment
First embodiment
Please refer to Figure 1A and Figure 1B, wherein Figure 1A illustrates the schematic diagram of the wide-angle image lens set according to first embodiment of the invention, and Figure 1B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the first embodiment from left to right and distorts curve map.From Figure 1A, wide-angle image lens set sequentially comprises aperture 100,1 first eyeglass 110,1 second eyeglass 120, the 3rd eyeglass 130 and one the 4th eyeglass 140 by thing side to image side.
This first eyeglass 110 has positive refracting power, and is plastic cement material, and its thing side surface 111 dipped beam axle 170 place is convex surface, and its 112 dipped beam axle 170 places, surface, image side are convex surface, and this thing side surface 111 and surface, image side 112 are all aspheric surface.
This second eyeglass 120 has negative refracting power, and is plastic cement material, and its thing side surface 121 dipped beam axle 170 place is convex surface, and its 122 dipped beam axle 170 places, surface, image side are concave surface, and this thing side surface 121 and surface, image side 122 are all aspheric surface.
3rd eyeglass 130 has positive refracting power, and is plastic cement material, and its thing side surface 131 dipped beam axle 170 place is concave surface, and its 132 dipped beam axle 170 places, surface, image side are convex surface, and this thing side surface 131 and surface, image side 132 are all aspheric surface.
4th eyeglass 140 has negative refracting power, and is plastic cement material, and its thing side surface 141 dipped beam axle 170 place is convex surface, and its 142 dipped beam axle 170 places, surface, image side are concave surface, and this thing side surface 141 and surface, image side 142 are all aspheric surface.
This infrared ray filtering filter element 150 is glass material, and it to be arranged between the 4th eyeglass 140 and imaging surface 160 and not to affect the focal length of wide-angle image lens set.
The equation of above-mentioned aspheric curve is expressed as follows:
Wherein z is highly for the position of h is with surface vertices positional value for referencial use along optical axis 170 direction; C is the curvature of lens surface near optical axis 170, and be the inverse (c=1/R) of radius-of-curvature (R), R is the radius-of-curvature of lens surface near optical axis 170, h is the vertical range of lens surface distance optical axis 170, k is circular cone coefficient (conicconstant), A, B, C, D, E, G ... for order aspherical coefficients.
In the wide-angle image lens set of the first embodiment, the whole focal length of this wide-angle image lens set is f, the overall f-number (f-number) of wide-angle image lens set is Fno, and the picture angle of wide-angle image lens set is 2 ω, and its numerical value is as follows: f=1.944 millimetre (mm); Fno=2.0; And 2 ω=89 degree.
In the wide-angle image lens set of the first embodiment, the focal length of this first eyeglass 110 is f1, and the focal length of this second eyeglass 120 is f2, and meets following condition: f1/f2=-0.5899.
In the wide-angle image lens set of the first embodiment, the focal length of this second eyeglass 120 is f2, and the focal length of the 3rd eyeglass 130 is f3, and meets following condition: f2/f3=-1.9689.
In the wide-angle image lens set of the first embodiment, the focal length of the 3rd eyeglass 130 is f3, and the focal length of the 4th eyeglass 140 is f4, and meets following condition: f3/f4=-0.7772.
In the wide-angle image lens set of the first embodiment, the focal length of this first eyeglass 110 is f1, and the focal length of the 3rd eyeglass 130 is f3, and meets following condition: f1/f3=1.1615.
In the wide-angle image lens set of the first embodiment, the focal length of this second eyeglass 120 is f2, and the focal length of the 4th eyeglass 140 is f4, and meets following condition: f2/f4=1.5303.
In the wide-angle image lens set of the first embodiment, the focal length of this first eyeglass 110 is f1, and this second eyeglass 120 is f23 with the combined focal length of the 3rd eyeglass 130, and meets following condition: f1/f23=0.8434.
In the wide-angle image lens set of the first embodiment, this second eyeglass 120 is f23 with the combined focal length of the 3rd eyeglass 130, and the focal length of the 4th eyeglass 140 is f4, and meets following condition: f23/f4=-1.0704.
In the wide-angle image lens set of the first embodiment, this first eyeglass 110 is f12 with the combined focal length of this second eyeglass 120, and the 3rd eyeglass 130 is f34 with the combined focal length of the 4th eyeglass 140, and meets following condition: f12/f34=0.8104.
In the wide-angle image lens set of the first embodiment, the whole focal length of this wide-angle image lens set is f, and the distance of thing side surface 111 to imaging surface 160 on optical axis 170 of this first eyeglass 110 is TL, and meets following condition: f/TL=0.6700.
Coordinate again with reference to lower list 1 and table 2.
In the wide-angle image lens set of the second embodiment, the focal length of the 3rd eyeglass 230 is f3, and the focal length of the 4th eyeglass 240 is f4, and meets following condition: f3/f4=-0.9122.
In the wide-angle image lens set of the second embodiment, the focal length of this first eyeglass 210 is f1, and the focal length of the 3rd eyeglass 230 is f3, and meets following condition: f1/f3=1.1725.
In the wide-angle image lens set of the second embodiment, the focal length of this second eyeglass 220 is f2, and the focal length of the 4th eyeglass 240 is f4, and meets following condition: f2/f4=1.9340.
In the wide-angle image lens set of the second embodiment, the focal length of this first eyeglass 210 is f1, and this second eyeglass 220 is f23 with the combined focal length of the 3rd eyeglass 230, and meets following condition: f1/f23=0.8544.
In the wide-angle image lens set of the second embodiment, this second eyeglass 220 is f23 with the combined focal length of the 3rd eyeglass 230, and the focal length of the 4th eyeglass 240 is f4, and meets following condition: f23/f4=-1.2518.
In the wide-angle image lens set of the second embodiment, this first eyeglass 210 is f12 with the combined focal length of this second eyeglass 220, and the 3rd eyeglass 230 is f34 with the combined focal length of the 4th eyeglass 240, and meets following condition: f12/f34=0.4998.
In the wide-angle image lens set of the second embodiment, the whole focal length of this wide-angle image lens set is f, and the distance of thing side surface 211 to imaging surface 260 on optical axis 270 of this first eyeglass 210 is TL, and meets following condition: f/TL=0.7256.
Coordinate again with reference to lower list 3 and table 4.Table 3 is the structured data that Fig. 2 A second embodiment is detailed.Table 4 is the aspherical surface data in the second embodiment.
3rd embodiment
Please refer to Fig. 3 A and Fig. 3 B, wherein Fig. 3 A illustrates the schematic diagram of the wide-angle image lens set according to third embodiment of the invention, and Fig. 3 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 3rd embodiment from left to right and distorts curve map.From Fig. 3 A, wide-angle image lens set sequentially comprises aperture 300,1 first eyeglass 310,1 second eyeglass 320, the 3rd eyeglass 330 and one the 4th eyeglass 340 by thing side to image side.
This first eyeglass 310 has positive refracting power, and is plastic cement material, and its thing side surface 311 dipped beam axle 370 place is convex surface, and its 312 dipped beam axle 370 places, surface, image side are convex surface, and this thing side surface 311 and surface, image side 312 are all aspheric surface.
This second eyeglass 320 has negative refracting power, and is plastic cement material, and its thing side surface 321 dipped beam axle 370 place is convex surface, and its 322 dipped beam axle 370 places, surface, image side are concave surface, and this thing side surface 321 and surface, image side 322 are all aspheric surface.
3rd eyeglass 330 has positive refracting power, and is plastic cement material, and its thing side surface 331 dipped beam axle 370 place is concave surface, and its 332 dipped beam axle 370 places, surface, image side are convex surface, and this thing side surface 331 and surface, image side 332 are all aspheric surface.
4th eyeglass 340 has negative refracting power, and is plastic cement material, and its thing side surface 341 dipped beam axle 370 place is convex surface, and its 342 dipped beam axle 370 places, surface, image side are concave surface, and this thing side surface 341 and surface, image side 342 are all aspheric surface.
This infrared ray filtering filter element 350 is glass material, and it to be arranged between the 4th eyeglass 340 and imaging surface 360 and not to affect the focal length of wide-angle image lens set.
The equation of above-mentioned aspheric curve represents the form as the first embodiment, and not in this to go forth.
In the wide-angle image lens set of the 3rd embodiment, the whole focal length of this wide-angle image lens set is f, the overall f-number (f-number) of wide-angle image lens set is Fno, and the picture angle of wide-angle image lens set is 2 ω, and its numerical value is as follows: f=2.607 millimetre (mm); Fno=2.0; And 2 ω=85 degree.
In the wide-angle image lens set of the 3rd embodiment, the focal length of this first eyeglass 310 is f1, and the focal length of this second eyeglass 320 is f2, and meets following condition: f1/f2=-0.5847.
In the wide-angle image lens set of the 3rd embodiment, the focal length of this second eyeglass 320 is f2, and the focal length of the 3rd eyeglass 330 is f3, and meets following condition: f2/f3=-2.0616.
In the wide-angle image lens set of the 3rd embodiment, the focal length of the 3rd eyeglass 330 is f3, and the focal length of the 4th eyeglass 340 is f4, and meets following condition: f3/f4=-1.0438.
In the wide-angle image lens set of the 3rd embodiment, the focal length of this first eyeglass 310 is f1, and the focal length of the 3rd eyeglass 330 is f3, and meets following condition: f1/f3=1.2054.
In the wide-angle image lens set of the 3rd embodiment, the focal length of this second eyeglass 320 is f2, and the focal length of the 4th eyeglass 340 is f4, and meets following condition: f2/f4=2.1519.
In the wide-angle image lens set of the 3rd embodiment, the focal length of this first eyeglass 310 is f1, and this second eyeglass 320 is f23 with the combined focal length of the 3rd eyeglass 330, and meets following condition: f1/f23=0.9019.
In the wide-angle image lens set of the 3rd embodiment, this second eyeglass 320 is f23 with the combined focal length of the 3rd eyeglass 330, and the focal length of the 4th eyeglass 340 is f4, and meets following condition: f23/f4=-1.3950.
In the wide-angle image lens set of the 3rd embodiment, this first eyeglass 310 is f12 with the combined focal length of this second eyeglass 320, and the 3rd eyeglass 330 is f34 with the combined focal length of the 4th eyeglass 340, and meets following condition: f12/f34=0.3571.
In the wide-angle image lens set of the 3rd embodiment, the whole focal length of this wide-angle image lens set is f, and the distance of thing side surface 311 to imaging surface 360 on optical axis 370 of this first eyeglass 310 is TL, and meets following condition: f/TL=0.7559.
Coordinate again with reference to lower list 5 and table 6.Table 5 is the structured data that Fig. 3 A the 3rd embodiment is detailed.Table 6 is the aspherical surface data in the 3rd embodiment.
4th embodiment
Please refer to Fig. 4 A and Fig. 4 B, wherein Fig. 4 A illustrates the schematic diagram of the wide-angle image lens set according to fourth embodiment of the invention, and Fig. 4 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 4th embodiment from left to right and distorts curve map.From Fig. 4 A, wide-angle image lens set sequentially comprises aperture 400,1 first eyeglass 410,1 second eyeglass 420, the 3rd eyeglass 430 and one the 4th eyeglass 440 by thing side to image side.
This first eyeglass 410 has positive refracting power, and is plastic cement material, and its thing side surface 411 dipped beam axle 470 place is convex surface, and its 412 dipped beam axle 470 places, surface, image side are convex surface, and this thing side surface 411 and surface, image side 412 are all aspheric surface.
This second eyeglass 420 has negative refracting power, and is plastic cement material, and its thing side surface 421 dipped beam axle 470 place is concave surface, and its 422 dipped beam axle 470 places, surface, image side are concave surface, and this thing side surface 421 and surface, image side 422 are all aspheric surface.
3rd eyeglass 430 has positive refracting power, and is plastic cement material, and its thing side surface 431 dipped beam axle 470 place is concave surface, and its 432 dipped beam axle 470 places, surface, image side are convex surface, and this thing side surface 431 and surface, image side 432 are all aspheric surface.
4th eyeglass 440 has negative refracting power, and is plastic cement material, and its thing side surface 441 dipped beam axle 470 place is convex surface, and its 442 dipped beam axle 470 places, surface, image side are concave surface, and this thing side surface 441 and surface, image side 442 are all aspheric surface.
This infrared ray filtering filter element 450 is glass material, and it to be arranged between the 4th eyeglass 440 and imaging surface 460 and not to affect the focal length of wide-angle image lens set.
The equation of above-mentioned aspheric curve represents the form as the first embodiment, and not in this to go forth.
In the wide-angle image lens set of the 4th embodiment, the whole focal length of this wide-angle image lens set is f, the overall f-number (f-number) of wide-angle image lens set is Fno, and the picture angle of wide-angle image lens set is 2 ω, and its numerical value is as follows: f=3.903 millimetre (mm); Fno=2.4; And 2 ω=79 degree.
In the wide-angle image lens set of the 4th embodiment, the focal length of this first eyeglass 410 is f1, and the focal length of this second eyeglass 420 is f2, and meets following condition: f1/f2=-0.6878.
In the wide-angle image lens set of the 4th embodiment, the focal length of this second eyeglass 420 is f2, and the focal length of the 3rd eyeglass 430 is f3, and meets following condition: f2/f3=-2.2403.
In the wide-angle image lens set of the 4th embodiment, the focal length of the 3rd eyeglass 430 is f3, and the focal length of the 4th eyeglass 440 is f4, and meets following condition: f3/f4=-0.9863.
In the wide-angle image lens set of the 4th embodiment, the focal length of this first eyeglass 410 is f1, and the focal length of the 3rd eyeglass 430 is f3, and meets following condition: f1/f3=1.5410.
In the wide-angle image lens set of the 4th embodiment, the focal length of this second eyeglass 420 is f2, and the focal length of the 4th eyeglass 440 is f4, and meets following condition: f2/f4=2.2096.
In the wide-angle image lens set of the 4th embodiment, the focal length of this first eyeglass 410 is f1, and this second eyeglass 420 is f23 with the combined focal length of the 3rd eyeglass 430, and meets following condition: f1/f23=1.4183.
In the wide-angle image lens set of the 4th embodiment, this second eyeglass 420 is f23 with the combined focal length of the 3rd eyeglass 430, and the focal length of the 4th eyeglass 440 is f4, and meets following condition: f23/f4=-1.0716.
In the wide-angle image lens set of the 4th embodiment, this first eyeglass 410 is f12 with the combined focal length of this second eyeglass 420, and the 3rd eyeglass 430 is f34 with the combined focal length of the 4th eyeglass 440, and meets following condition: f12/f34=0.5146.
In the wide-angle image lens set of the 4th embodiment, the whole focal length of this wide-angle image lens set is f, and the distance of thing side surface 411 to imaging surface 460 on optical axis 470 of this first eyeglass 410 is TL, and meets following condition: f/TL=0.7965.
Coordinate again with reference to lower list 7 and table 8.Table 7 is the structured data that Fig. 4 A the 4th embodiment is detailed.Table 8 is the aspherical surface data in the 4th embodiment.
5th embodiment
Please refer to Fig. 5 A and Fig. 5 B, wherein Fig. 5 A illustrates the schematic diagram of the wide-angle image lens set according to fifth embodiment of the invention, and Fig. 5 B is sequentially spherical aberration, the astigmatism of the wide-angle image lens set of the 5th embodiment from left to right and distorts curve map.From Fig. 5 A, wide-angle image lens set sequentially comprises aperture 500,1 first eyeglass 510,1 second eyeglass 520, the 3rd eyeglass 530 and one the 4th eyeglass 540 by thing side to image side.
This first eyeglass 510 has positive refracting power, and is plastic cement material, and its thing side surface 511 dipped beam axle 570 place is convex surface, and its 512 dipped beam axle 570 places, surface, image side are convex surface, and this thing side surface 511 and surface, image side 512 are all aspheric surface.
This second eyeglass 520 has negative refracting power, and is plastic cement material, and its thing side surface 521 dipped beam axle 570 place is convex surface, and its 522 dipped beam axle 570 places, surface, image side are concave surface, and this thing side surface 521 and surface, image side 522 are all aspheric surface.
3rd eyeglass 530 has positive refracting power, and is plastic cement material, and its thing side surface 531 dipped beam axle 570 place is concave surface, and its 532 dipped beam axle 570 places, surface, image side are convex surface, and this thing side surface 531 and surface, image side 532 are all aspheric surface.
4th eyeglass 540 has negative refracting power, and is plastic cement material, and its thing side surface 541 dipped beam axle 570 place is convex surface, and its 542 dipped beam axle 570 places, surface, image side are concave surface, and this thing side surface 541 and surface, image side 542 are all aspheric surface.
This infrared ray filtering filter element 550 is glass material, and it to be arranged between the 4th eyeglass 540 and imaging surface 560 and not to affect the focal length of wide-angle image lens set.
The equation of above-mentioned aspheric curve represents the form as the first embodiment, and not in this to go forth.
In the wide-angle image lens set of the 5th embodiment, the whole focal length of this wide-angle image lens set is f, the overall f-number (f-number) of wide-angle image lens set is Fno, and the picture angle of wide-angle image lens set is 2 ω, and its numerical value is as follows: f=3.684 millimetre (mm); Fno=2.4; And 2 ω=79 degree.
In the wide-angle image lens set of the 5th embodiment, the focal length of this first eyeglass 510 is f1, and the focal length of this second eyeglass 520 is f2, and meets following condition: f1/f2=-0.5737.
In the wide-angle image lens set of the 5th embodiment, the focal length of this second eyeglass 520 is f2, and the focal length of the 3rd eyeglass 530 is f3, and meets following condition: f2/f3=-2.8478.
In the wide-angle image lens set of the 5th embodiment, the focal length of the 3rd eyeglass 530 is f3, and the focal length of the 4th eyeglass 540 is f4, and meets following condition: f3/f4=-0.9878.
In the wide-angle image lens set of the 5th embodiment, the focal length of this first eyeglass 510 is f1, and the focal length of the 3rd eyeglass 530 is f3, and meets following condition: f1/f3=1.6339.
In the wide-angle image lens set of the 5th embodiment, the focal length of this second eyeglass 520 is f2, and the focal length of the 4th eyeglass 540 is f4, and meets following condition: f2/f4=2.8130.
In the wide-angle image lens set of the 5th embodiment, the focal length of this first eyeglass 510 is f1, and this second eyeglass 520 is f23 with the combined focal length of the 3rd eyeglass 530, and meets following condition: f1/f23=1.4778.
In the wide-angle image lens set of the 5th embodiment, this second eyeglass 520 is f23 with the combined focal length of the 3rd eyeglass 530, and the focal length of the 4th eyeglass 540 is f4, and meets following condition: f23/f4=-1.0921.
In the wide-angle image lens set of the 5th embodiment, this first eyeglass 510 is f12 with the combined focal length of this second eyeglass 520, and the 3rd eyeglass 530 is f34 with the combined focal length of the 4th eyeglass 540, and meets following condition: f12/f34=0.4245.
In the wide-angle image lens set of the 5th embodiment, the whole focal length of this wide-angle image lens set is f, and the distance of thing side surface 511 to imaging surface 560 on optical axis 570 of this first eyeglass 510 is TL, and meets following condition: f/TL=0.7142.
Coordinate again with reference to lower list 9 and table 10.Table 9 is the structured data that Fig. 5 A the 5th embodiment is detailed.Table 10 is the aspherical surface data in the 5th embodiment.
Wide-angle image lens set provided by the invention, the material of eyeglass can be plastic cement or glass, when eyeglass material is plastic cement, effectively can reduce production cost, and the another material when eyeglass is glass, then can increase the degree of freedom of wide-angle image lens set refracting power configuration.In addition, in wide-angle image lens set, the thing side surface of eyeglass and surface, image side can be aspheric surface, aspheric surface easily can be made into the shape beyond sphere, obtain more controlled variable, in order to cut down aberration, and then the number that reduction eyeglass uses, therefore effectively can reduce the total length of wide-angle image lens set of the present invention.
In wide-angle image lens set provided by the invention, with regard to regard to the eyeglass with refracting power, if when lens surface is convex surface and does not define this convex surface position, then represent that this lens surface is convex surface in dipped beam axle place; If when lens surface is concave surface and does not define this concave surface position, then represent that this lens surface is concave surface in dipped beam axle place.In addition, table 11 is the correspondence table of each relational expression in each embodiment.
In sum, the various embodiments described above and diagram are only preferred embodiment of the present invention, when can not with restriction the scope of the present invention, the equalization namely generally done according to the present patent application the scope of the claims change with modify, all should remain within the scope of the patent.
Claims (10)
1. a wide-angle image lens set, is characterized in that: sequentially comprised to image side by thing side:
One aperture;
First eyeglass of the positive refracting power of one tool, its surface, image side is convex surface, and the thing side surface of this first eyeglass and surface, image side have at least one side to be aspheric surface;
One tool bears the second eyeglass of refracting power, and its surface, image side is concave surface, and the thing side surface of this second eyeglass and surface, image side have at least one side to be aspheric surface;
3rd eyeglass of the positive refracting power of one tool, its thing side surface is concave surface, and the thing side surface of the 3rd eyeglass and surface, image side have at least one side to be aspheric surface;
One tool bears the 4th eyeglass of refracting power, and its thing side surface is convex surface, and the thing side surface of the 4th eyeglass and surface, image side have at least one side to be aspheric surface, and the thing side surface of the 4th eyeglass and surface, image side have at least one side to have a point of inflexion.
2. wide-angle image lens set as claimed in claim 1, is characterized in that: the focal length of described first eyeglass is f1, and the focal length of this second eyeglass is f2, and meets following condition :-0.8 < f1/f2 <-0.4.
3. wide-angle image lens set as claimed in claim 1, is characterized in that: the focal length of described second eyeglass is f2, and the focal length of the 3rd eyeglass is f3, and meets following condition :-3.5 < f2/f3 <-1.2.
4. wide-angle image lens set as claimed in claim 1, is characterized in that: the focal length of described 3rd eyeglass is f3, and the focal length of the 4th eyeglass is f4, and meets following condition :-1.2 < f3/f4 <-0.5.
5. wide-angle image lens set as claimed in claim 1, is characterized in that: the focal length of described first eyeglass is f1, and the focal length of the 3rd eyeglass is f3, and meets following condition: 0.8 < f1/f3 < 2.0.
6. wide-angle image lens set as claimed in claim 1, is characterized in that: the focal length of described second eyeglass is f2, and the focal length of the 4th eyeglass is f4, and meets following condition: 1.0 < f2/f4 < 3.5.
7. wide-angle image lens set as claimed in claim 1, it is characterized in that: the focal length of described first eyeglass is f1, the combined focal length of this second eyeglass and the 3rd eyeglass is f23, and meets following condition: 0.5 < f1/f23 < 1.8.
8. wide-angle image lens set as claimed in claim 1, it is characterized in that: the combined focal length of described second eyeglass and the 3rd eyeglass is f23, the focal length of the 4th eyeglass is f4, and meets following condition :-1.7 < f23/f4 <-0.7.
9. wide-angle image lens set as claimed in claim 1, it is characterized in that: the combined focal length of described first eyeglass and this second eyeglass is f12, the combined focal length of the 3rd eyeglass and the 4th eyeglass is f34, and meets following condition: 0.1 < f12/f34 < 1.0.
10. wide-angle image lens set as claimed in claim 1, it is characterized in that: the whole focal length of described wide-angle image lens set is f, the thing side surface of this first eyeglass is TL to the distance of imaging surface on optical axis, and meets following condition: 0.5 < f/TL < 0.85.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228373.4A CN105278083B (en) | 2014-05-27 | 2014-05-27 | Wide-angle image lens set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228373.4A CN105278083B (en) | 2014-05-27 | 2014-05-27 | Wide-angle image lens set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105278083A true CN105278083A (en) | 2016-01-27 |
| CN105278083B CN105278083B (en) | 2019-06-11 |
Family
ID=55147396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228373.4A Active CN105278083B (en) | 2014-05-27 | 2014-05-27 | Wide-angle image lens set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105278083B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320123A (en) * | 2007-06-06 | 2008-12-10 | 亚洲光学股份有限公司 | Focus-fixed lens |
| CN101762865A (en) * | 2008-12-24 | 2010-06-30 | 大立光电股份有限公司 | Imaging lens group |
| CN101776788A (en) * | 2009-01-14 | 2010-07-14 | 大立光电股份有限公司 | Photographic lens group |
| CN102023370A (en) * | 2009-09-15 | 2011-04-20 | 大立光电股份有限公司 | Imaging lens system |
| CN102375221A (en) * | 2010-08-24 | 2012-03-14 | 大立光电股份有限公司 | Optical photographic lens group |
| CN202443162U (en) * | 2011-09-20 | 2012-09-19 | 大立光电股份有限公司 | Photographing lens assembly |
-
2014
- 2014-05-27 CN CN201410228373.4A patent/CN105278083B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320123A (en) * | 2007-06-06 | 2008-12-10 | 亚洲光学股份有限公司 | Focus-fixed lens |
| CN101762865A (en) * | 2008-12-24 | 2010-06-30 | 大立光电股份有限公司 | Imaging lens group |
| CN101776788A (en) * | 2009-01-14 | 2010-07-14 | 大立光电股份有限公司 | Photographic lens group |
| CN102023370A (en) * | 2009-09-15 | 2011-04-20 | 大立光电股份有限公司 | Imaging lens system |
| CN102375221A (en) * | 2010-08-24 | 2012-03-14 | 大立光电股份有限公司 | Optical photographic lens group |
| CN202443162U (en) * | 2011-09-20 | 2012-09-19 | 大立光电股份有限公司 | Photographing lens assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105278083B (en) | 2019-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103576294B (en) | wide-angle optical lens assembly | |
| CN103033907B (en) | Optical Imaging Lens System | |
| CN202141850U (en) | Image pickup lens assembly | |
| CN202102166U (en) | Optical system for image formation | |
| CN103592746B (en) | Image lens system set | |
| CN103472568B (en) | Image capturing optical lens assembly | |
| CN202693894U (en) | Optical image system set | |
| CN202126531U (en) | Optical lens group for image capture | |
| CN103529538B (en) | Image lens assembly | |
| CN102854607B (en) | Optical image capturing lens assembly | |
| CN203965713U (en) | The slim camera lens of high pixel | |
| CN102466867B (en) | Optical camera lens group | |
| CN105700119B (en) | Imaging lens system, image capturing device and electronic device | |
| CN104516094A (en) | Wide angle optical lens system | |
| CN103926676B (en) | Optical image capturing lens assembly | |
| CN104635325A (en) | Imaging optical lens assembly | |
| CN104635320B (en) | Small-sized imaging lens system | |
| CN104516090A (en) | Wide-angle image taking lens system | |
| CN104765130A (en) | Image lens | |
| CN105022140A (en) | Optical lens for imaging, image capturing device and mobile terminal | |
| CN104730695A (en) | Optical lens assembly for imaging, image capturing device and mobile terminal | |
| CN103777315B (en) | Miniature wide-angle imaging lens | |
| CN104570277A (en) | Imaging optical lens, image capturing device and portable electronic device | |
| CN106199926B (en) | Optical lens | |
| CN104914558A (en) | Imaging lens group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |