CN104570287A - High-pixel lens assembly with large wide angle and large aperture - Google Patents
High-pixel lens assembly with large wide angle and large aperture Download PDFInfo
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- CN104570287A CN104570287A CN201410788010.6A CN201410788010A CN104570287A CN 104570287 A CN104570287 A CN 104570287A CN 201410788010 A CN201410788010 A CN 201410788010A CN 104570287 A CN104570287 A CN 104570287A
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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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—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
- G02B13/0015—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
- G02B13/0035—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 three 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
- G02B13/18—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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Abstract
The invention relates to a high-pixel lens assembly with large wide angle and large aperture. The high-pixel lens assembly comprises a first lens with positive focal power, a second lens with positive or negative focal power, and a third lens with negative focal power, wherein the ratio (F/F1) of the focal length F of the lens to the focal length F1 of the first lens is greater than 1.2 and less than 2.8; the ratio (D1/T12) of the thickness D1 of the first lens on an optical axis to the interval distance T12 of the first lens and the second lens on the optical axis is greater than 3.5 and less than 6.8; the refractive indexes of the first lens, the second lens and the third lens satisfy the following relation: n1 is greater than 1.4 and less than 1.56, n2 is greater than 1.56 and less than 1.6, and n3 is greater than 1.6 and less than 1.8. According to the high-pixel lens assembly with large wide angle and large aperture, the thickness of each lens is greater than 0.4mm, which is conducive to the molding and mass production; the gap between the lenses is small, so that the structure is compact and the overall length is shorter; three aspherical lenses are combined reasonably, to ensure higher imaging quality.
Description
Technical field
The present invention relates to optical lens technical field, particularly relate to a kind of large wide-angle large aperture high pixel lens assembly.
Background technology
Along with becoming stronger day by day of smart mobile phone function, the requirement of imaging image quality is also grown with each passing hour.Looked back since the more than ten years of camera cell phone birth in 2000, camera function progressively permeates mobile phone, and ripe gradually, and single from this angle of pixel, camera lens develops into 13,000,000 current pixel camera lenses from 110,000 original pixels.Compared with the high pixel camera lens that research and development are also not overripened, the 5000000 pixel mirror header structures be made up of three sized non-spherical resin lens become the main force in preposition pick-up lens market.The lightening trend of body also makes the lens thickness of lens design thinning simultaneously, difficult forming; In addition, as eyeglass do too thin, also can affect the image quality of camera lens, how ensureing production efficiency, easily shaping while can improve again the imaging effect of camera lens, be the problem that this technical field will need to study for a long time.
Summary of the invention
For solving the problem, the invention provides large wide-angle large aperture high pixel lens assembly, the thickness of its each eyeglass is greater than 0.4mm, is beneficial to shaping and volume production; Between eyeglass, gap is little, compact conformation, and overall length is shorter; Three aspherical lens are reasonably combined, ensure that higher image quality.
The technical solution adopted in the present invention is: a kind of large wide-angle large aperture high pixel lens assembly, comprise the first lens, the second lens, the 3rd lens, the optical filter that are arranged in order from thing side to image side and be arranged at the diaphragm of described first lens thing side, described first lens have positive light coke and towards the convex surface, of thing side towards the convex surface of image side; Described second lens have positive light coke and towards the concave surface of thing side; Described 3rd lens have negative power; Described lens assembly, the first lens, the second lens, the 3rd lens meet following relationship: 1.2<F/F1<2.8; 2.5<T12/T23<5; 3.5<D1/T12<6.8; 9<D2/T23<15; 1.4<n1<1.56<n2LEs sT.LTssT.LT1.6<n3<1.8; Wherein, F is the focal length of this lens assembly; F1 is the focal length of described first lens; T12 is described first lens, the spacing distance of the second lens on optical axis; T23 is described second lens, the spacing distance of the 3rd lens on optical axis; D1 is the thickness of described first lens on optical axis; D2 is the thickness of described second lens on optical axis; N1, n2, n3 are respectively the refractive index of described first lens, the second lens, the 3rd lens.
Preferably, described first lens meet following relational expression: 30< (R1-R2)/(R1+R2) <50, and wherein R1 is the radius-of-curvature of described first lens thing side surface; R2 is the radius-of-curvature on described first surface, lens image side.
Preferably, described first lens meet following relational expression :-1<R2/R1<-2, and wherein R1 is the radius-of-curvature of described first lens thing side surface; R2 is the radius-of-curvature on described first surface, lens image side.
Preferably, described 3rd lens meet following relationship :-6<R5/R6<-15, and wherein R5 is the radius-of-curvature of described 3rd lens thing side surface; R6 is the radius-of-curvature on described 3rd surface, lens image side.
Preferably, described 3rd lens meet following relationship: 15<R5/R6<23, and wherein R5 is the radius-of-curvature of described 3rd lens thing side surface; R6 is the radius-of-curvature on described 3rd surface, lens image side.
Preferably, described first lens, the second lens, the 3rd lens meet following relationship: 0.8<Vd1/ (Vd2+Vd3) <2.3, and wherein Vd1 is the Abbe number of described first lens; Vd2 is the Abbe number of described second lens; Vd3 is the Abbe number of described 3rd lens.
Preferably, described second lens, the 3rd lens meet following relationship: 25<Vd2<35,20<Vd3<25, and wherein Vd2 is the Abbe number of described second lens; Vd3 is the Abbe number of described 3rd lens.
Preferably, the center thickness of described first lens is 0.715 ~ 0.895mm, and the center thickness of described second lens is 0.425 ~ 0.695mm, and the center thickness of described 3rd lens is 0.459 ~ 0.825mm.
The present invention also adopts following technical scheme: a kind of large wide-angle large aperture high pixel lens assembly, comprise the first lens, the second lens, the 3rd lens, the optical filter that are arranged in order from thing side to image side and be arranged at the diaphragm of described first lens thing side, described first lens have positive light coke and towards the convex surface, of thing side towards the convex surface of image side; Described second lens have negative power and towards the concave surface of thing side; Described 3rd lens have negative power; Described lens assembly, the first lens, the second lens, the 3rd lens meet following relationship: 1.2<F/F1<2.8; 1<F3/F2<3; 3.5<D1/T12<6.8; 1.4<n1<1.56<n2LEs sT.LTssT.LT1.6<n3<1.8; Wherein, F is the focal length of this lens assembly; F1 is the focal length of described first lens; F2 is the focal length of described second lens; F3 is the focal length of described 3rd lens; T12 is described first lens, the spacing distance of the second lens on optical axis; D1 is the thickness of described first lens on optical axis; N1, n2, n3 are respectively the refractive index of described first lens, the second lens, the 3rd lens.
Preferably, described first lens meet following relational expression :-1<R2/R1<-2, and wherein R1 is the radius-of-curvature of described first lens thing side surface; R2 is the radius-of-curvature on described first surface, lens image side.
Preferably, described first lens, the second lens, the 3rd lens meet following relationship: 0.8<Vd1/ (Vd2+Vd3) <2.3, and wherein Vd1 is the Abbe number of described first lens; Vd2 is the Abbe number of described second lens; Vd3 is the Abbe number of described 3rd lens.
Preferably, described second lens, the 3rd lens meet following relationship: 25<Vd2<35,20<Vd3<25, and wherein Vd2 is the Abbe number of described second lens; Vd3 is the Abbe number of described 3rd lens.
Preferably, the center thickness of described first lens is 0.715 ~ 0.895mm, and the center thickness of described second lens is 0.425 ~ 0.695mm, and the center thickness of described 3rd lens is 0.459 ~ 0.825mm.
Described large wide-angle large aperture high pixel lens assembly, beneficial effect is compared to existing technology:
1) the present invention devises 1/5 of a kind of 3P, and " large wide-angle large aperture high pixel lens assembly, while meeting mobile lens small form factor requirements, also has the performance that high definition is taken pictures; The thickness of each eyeglass of this lens group is greater than 0.4mm, is beneficial to shaping and volume production; Between eyeglass, gap is little, compact conformation, and overall length is shorter.
2) this lens assembly also has the feature of large wide-angle large aperture, and the design of large aperture adds the light-inletting quantity of shooting process, ensure that the light levels of shooting picture; The FOV of this camera lens reaches 70 ~ 80 degree, makes mobile phone have larger coverage.
3) this lens assembly also has high-resolution feature, adopts the structure of three aspherical lens, can effectively correct all kinds of aberrations such as the curvature of field, astigmatism, ratio chromatism, while cost-saving; Use resins for universal use material on the market to replace glass, moulding process maturation is comparatively ripe, solves the problem that product efficiency is low and cost is higher that glass mirror causes because of processing difficulties.
4) optical distortion of this lens assembly is less than 1.5%, and the curvature of field is less than 0.1mm.Imaging distortion is little, and sharpness is high.
5) in the first lens, R2 is set to negative tortuosity ratio, make central vision be greater than 55% and the outer visual field of most axle is greater than 40% at the mtf value of 223lp/mm at the mtf value at 223lp/mm place, substantially increase the imaging performance of 3P lens structure, reach the imaging effect of 4P lens structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 1;
Fig. 2 is the curvature of field, the distortion curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 1;
Fig. 3 is the spherical aberration curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 1;
Fig. 4 is the structural representation of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 2;
Fig. 5 is the curvature of field, the distortion curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 2;
Fig. 6 is the spherical aberration curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 2;
Fig. 7 is the structural representation of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 3;
Fig. 8 is the curvature of field, the distortion curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 3;
Fig. 9 is the spherical aberration curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 3;
Figure 10 is the structural representation of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 4;
Figure 11 is the curvature of field, the distortion curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 4;
Figure 12 is the spherical aberration curve of the large wide-angle large aperture high pixel lens assembly of the embodiment of the present invention 4.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Embodiment 1:
With reference to Fig. 1, large wide-angle large aperture high pixel camera lens resin component of the present invention, combined by three plastic cement (resin) aspherical lens, it comprises from object side to the first lens 1, second lens 2, the 3rd lens 3, the optical filter 4 that become image side to be arranged in order, and diaphragm 5, wherein diaphragm 5 is arranged at the thing side of the first lens 1, adopts the mode that diaphragm is preposition.First lens 1 have positive light coke and towards the convex surface, of thing side towards the convex surface of image side; Second lens 2 have positive light coke and towards the concave surface of thing side; 3rd lens 3 have negative power.
Wherein, this lens assembly, the first lens 1, second lens 2, the 3rd lens 3 meet following relationship: 1.2<F/F1<2.8; 2.5<T12/T23<5; 3.5<D1/T12<6.8; 9<D2/T23<15; 1.4<n1<1.56<n2LEs sT.LTssT.LT1.6<n3<1.8; 30< (R1-R2)/(R1+R2) <50;-6<R5/R6<-15; 0.8<Vd1/ (Vd2+Vd3) <2.3; 25<Vd2<35,20<Vd3<25.
Wherein, F is the focal length of this lens assembly; F1 is the focal length of the first lens 1; T12 is the spacing distances of the first lens 1, second lens 2 on optical axis; T23 is the second lens 2, the spacing distance of the 3rd lens 3 on optical axis; D1 is the thickness of the first lens 1 on optical axis; D2 is the thickness of the second lens 2 on optical axis; R1 is the radius-of-curvature of the first lens 1 thing side surface; R2 is the radius-of-curvature on the first surface, lens 1 image side; R5 is the radius-of-curvature of the 3rd lens 3 thing side surface; R6 is the radius-of-curvature on the 3rd surface, lens 3 image side; Vd1 is the Abbe number of the first lens 1; Vd2 is the Abbe number of the second lens 2; Vd3 is the Abbe number of the 3rd lens 3; N1, n2, n3 are respectively the refractive index of the first lens 1, second lens 2, the 3rd lens 3.
Wherein, in this embodiment, optical filter 4 thickness is 0.21mm, and the center thickness of the first lens 1 is 0.815 ~ 0.895mm, and the center thickness of the second lens 2 is 0.635 ~ 0.695mm, and the center thickness of the 3rd lens 3 is 0.615 ~ 0.665mm.
In this lens assembly: the radius of curvature R 1 of the first lens 1 thing side surface ensures at following scope: 30< (R2-R1)/(R2+R1) <50 with the radius-of-curvature on surface, image side, and R2 is set to negative tortuosity ratio, central vision is made to be greater than 55% and the outer visual field of most axle is greater than 40% at the mtf value of 223lp/mm at the mtf value at 223lp/mm place, greatly improve the imaging performance of 3P lens structure, reach the imaging effect of 4P lens structure.
The thickness of each eyeglass of this lens assembly is greater than 0.4mm, is beneficial to shaping and volume production; Eyeglass gap meets: 2.5<T12/T23<5; 3.5<D1/T12<6.8; 9<D2/T23<15, between eyeglass, gap is little, compact conformation, and overall length is shorter; 3 of low cost plastic lens are utilized to meet the image quality of high pixel.
In addition, the aspheric surface of the first lens 1, second lens 2, the 3rd lens 3 meets formula:
Can arrange lens combination further according to the concrete data of parameters in above-mentioned formula, data citing is as table one (F=2.39mm, FNO=2.4, FOV=74.5 °)
The each lens data table of table one lens assembly
Embodiment 2:
With reference to Fig. 4, as different from Example 1, in described large wide-angle large aperture high pixel lens assembly, lens assembly, the first lens 1, second lens 2, the 3rd lens 3 meet following relationship:
1.2<F/F1<2.8；2.5<T12/T23<5；3.5<D1/T12<6.8；9<D2/T23<15；1.4<n1<1.56<n2<1.6<n3<1.8；-1<R2/R1<-2；-6<R5/R6<-15；0.8<Vd1/(Vd2+Vd3)<2.3；25<Vd2<35，20<Vd3<25。
Wherein, F is the focal length of this lens assembly; F1 is the focal length of the first lens 1; T12 is the spacing distances of the first lens 1, second lens 2 on optical axis; T23 is the second lens 2, the spacing distance of the 3rd lens 3 on optical axis; D1 is the thickness of the first lens 1 on optical axis; D2 is the thickness of the second lens 2 on optical axis; R1 is the radius-of-curvature of the first lens 1 thing side surface; R2 is the radius-of-curvature on the first surface, lens 1 image side; R5 is the radius-of-curvature of the 3rd lens 3 thing side surface; R6 is the radius-of-curvature on the 3rd surface, lens 3 image side; Vd1 is the Abbe number of the first lens 1; Vd2 is the Abbe number of the second lens 2; Vd3 is the Abbe number of the 3rd lens 3, and n1, n2, n3 are respectively the refractive index of the first lens 1, second lens 2, the 3rd lens 3.
Wherein, in this embodiment, optical filter 4 thickness is 0.21mm, and the center thickness of the first lens 1 is 0.815 ~ 0.895mm, and the center thickness of the second lens 2 is 0.485 ~ 0.525mm, and the center thickness of the 3rd lens 3 is 0.745 ~ 0.825mm.
The thickness of each eyeglass of this lens assembly is greater than 0.4mm, is beneficial to shaping and volume production; Eyeglass gap meets: 2.5<T12/T23<5; 3.5<D1/T12<6.8; 9<D2/T23<15, between eyeglass, gap is little, compact conformation, and overall length is shorter; 3 of low cost plastic lens are utilized to meet the image quality of high pixel.
The aspheric surface of the first lens 1, second lens 2, the 3rd lens 3 meets formula:
Can arrange lens combination further according to the concrete data of parameters in above-mentioned formula, data citing is as table two (F=2.37mm, FNO=2.4, FOV=74.2 °)
The each lens data table of table two lens assembly
Embodiment 3:
With reference to Fig. 7, as different from Example 1, described large wide-angle large aperture high pixel lens assembly also comprises a cover glass sheet 6, and it is located between optical filter 4 and the imaging surface of this lens assembly.In the present embodiment, lens assembly, the first lens 1, second lens 2, the 3rd lens 3 meet following relationship:
1.2<F/F1<2.8；2.5<T12/T23<5；3.5<D1/T12<6.8；9<D2/T23<15；1.4<n1<1.56<n2<1.6<n3<1.8；30<(R1-R2)/(R1+R2)<50；15<R5/R6<23；0.8<Vd1/(Vd2+Vd3)<2.3；25<Vd2<35，20<Vd3<25。
Wherein, F is the focal length of this lens assembly; F1 is the focal length of the first lens 1; T12 is the spacing distances of the first lens 1, second lens 2 on optical axis; T23 is the second lens 2, the spacing distance of the 3rd lens 3 on optical axis; D1 is the thickness of the first lens 1 on optical axis; D2 is the thickness of the second lens 2 on optical axis; R1 is the radius-of-curvature of the first lens 1 thing side surface; R2 is the radius-of-curvature on the first surface, lens 1 image side; R5 is the radius-of-curvature of the 3rd lens 3 thing side surface; R6 is the radius-of-curvature on the 3rd surface, lens 3 image side; Vd1 is the Abbe number of the first lens 1; Vd2 is the Abbe number of the second lens 2; Vd3 is the Abbe number of the 3rd lens 3; N1, n2, n3 are respectively the refractive index of the first lens 1, second lens 2, the 3rd lens 3.
Wherein, in this embodiment, optical filter 4 thickness is 0.21mm, and the thickness of cover glass sheet 6 is 0.40mm, and the center thickness of the first lens is 0.805 ~ 0.885mm; the center thickness of the second lens is 0.625 ~ 0.695mm, and the center thickness of the 3rd lens is 0.459 ~ 0.524mm.
In this lens assembly, radius of curvature R 1 and the radius-of-curvature on surface, image side of the first lens 1 thing side surface ensure: 30< (R2-R1)/(R2+R1) <50, and R2 is set to negative tortuosity ratio, central vision is made to be greater than 55% and the outer visual field of most axle is greater than 40% at the mtf value of 223lp/mm at the mtf value at 223lp/mm place, greatly improve the imaging performance of 3P lens structure, reach the imaging effect of 4P lens structure.
The thickness of each eyeglass of this lens assembly is greater than 0.4mm, is beneficial to shaping and volume production; Eyeglass gap meets: 2.5<T12/T23<5; 3.5<D1/T12<6.8; 9<D2/T23<15, between eyeglass, gap is little, compact conformation, and overall length is shorter; 3 of low cost plastic lens are utilized to meet the image quality of high pixel.
The aspheric surface of the first lens 1, second lens 2, the 3rd lens 3 meets formula:
Can arrange lens combination further according to the concrete data of parameters in above-mentioned formula, data citing is as table three (F=2.33mm, FNO=2.4, FOV=75.6 °)
The each lens data table of table three-lens assembly
Embodiment 4:
With reference to Figure 10, as different from Example 1, in described large wide-angle large aperture high pixel lens assembly, the second lens 2 are negative power, and this lens assembly, the first lens 1, second lens 2, the 3rd lens 3 meet following relationship:
1.2<F/F1<2.8；1<F3/F2<3；3.5<D1/T12<6.8；1.4<n1<1.56<n2<1.6<n3<1.8；-1<R2/R1<-2；0.8<Vd1/(Vd2+Vd3)<2.3；25<Vd2<35,20<Vd3<25。Wherein, F is the focal length of this lens assembly; F1 is the focal length of the first lens 1; F2 is the focal length of described second lens; F3 is the focal length of described 3rd lens; T12 is the spacing distances of the first lens 1, second lens 2 on optical axis; D1 is the thickness of the first lens 1 on optical axis; R1 is the radius-of-curvature of the first lens 1 thing side surface; R2 is the radius-of-curvature on the first surface, lens 1 image side; Vd1 is the Abbe number of the first lens 1; Vd2 is the Abbe number of the second lens 2; Vd3 is the Abbe number of the 3rd lens 3; N1, n2, n3 are respectively the refractive index of the first lens 1, second lens 2, the 3rd lens 3.
Wherein, in this embodiment, optical filter 4 thickness is 0.21mm, and the center thickness of the first lens is 0.715 ~ 0.776mm, and the center thickness of the second lens is 0.425 ~ 0.495mm, and the center thickness of the 3rd lens is 0.745 ~ 0.815mm.
In this lens assembly, the radius-of-curvature guarantee of the first lens 1 is :-1<R2/R1<-2, and R2 is set to negative tortuosity ratio, greatly improves the imaging performance of 3P lens structure, reaches the imaging effect of 4P lens structure.
The thickness of each eyeglass of this lens assembly is greater than 0.4mm, is beneficial to shaping and volume production; Eyeglass gap meets: 3.5<D1/T12<6.8, and between eyeglass, gap is little, compact conformation, and overall length is shorter; 3 of low cost plastic lens are utilized to meet the image quality of high pixel.
The aspheric surface of the first lens 1, second lens 2, the 3rd lens 3 meets formula:
Can arrange lens combination further according to the concrete data of parameters in above-mentioned formula, data citing is as table four (F=2.57mm, FNO=2.2, FOV=70.4 °)
The each lens data table of table four-barrel assembly
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a large wide-angle large aperture high pixel lens assembly, comprise the first lens (1), the second lens (2), the 3rd lens (3), the optical filter (4) that are arranged in order from thing side to image side and be arranged at the diaphragm (5) of described first lens (1) thing side, it is characterized in that:
Described first lens (1) have positive light coke and towards the convex surface, of thing side towards the convex surface of image side; Described second lens (2) have positive light coke and towards the concave surface of thing side; Described 3rd lens (3) have negative power; Described lens assembly, the first lens (1), the second lens (2), the 3rd lens (3) meet following relationship:
1.2<F/F1<2.8；2.5<T12/T23<5；3.5<D1/T12<6.8；9<D2/T23<15；1.4<n1<1.56<n2<1.6<n3<1.8；
Wherein, F is the focal length of this lens assembly; F1 is the focal length of described first lens (1); T12 is described first lens (1), the second lens (2) spacing distance on optical axis; T23 is described second lens (2), the 3rd lens (3) spacing distance on optical axis; D1 is the thickness of described first lens (1) on optical axis; D2 is the thickness of described second lens (2) on optical axis; N1, n2, n3 are respectively the refractive index of described first lens (1), the second lens (2), the 3rd lens (3).
2. large wide-angle large aperture high pixel lens assembly according to claim 1, it is characterized in that: described first lens (1) meet following relational expression: 30< (R1-R2)/(R1+R2) <50, wherein R1 is the radius-of-curvature of described first lens (1) thing side surface; R2 is the radius-of-curvature on described first lens (1) surface, image side.
3. large wide-angle large aperture high pixel lens assembly according to claim 1, it is characterized in that: described first lens (1) meet following relational expression :-1<R2/R1<-2, wherein R1 is the radius-of-curvature of described first lens (1) thing side surface; R2 is the radius-of-curvature on described first lens (1) surface, image side.
4. the large wide-angle large aperture high pixel lens assembly according to Claims 2 or 3, it is characterized in that: described 3rd lens (3) meet following relationship :-6<R5/R6<-15, wherein R5 is the radius-of-curvature of described 3rd lens (3) thing side surface; R6 is the radius-of-curvature on described 3rd lens (3) surface, image side.
5. large wide-angle large aperture high pixel lens assembly according to claim 2, it is characterized in that: described 3rd lens (3) meet following relationship: 15<R5/R6<23, wherein R5 is the radius-of-curvature of described 3rd lens (3) thing side surface; R6 is the radius-of-curvature on described 3rd lens (3) surface, image side.
6. a large wide-angle large aperture high pixel lens assembly, comprise the first lens (1), the second lens (2), the 3rd lens (3), the optical filter (4) that are arranged in order from thing side to image side and be arranged at the diaphragm (5) of described first lens (1) thing side, it is characterized in that:
Described first lens (1) have positive light coke and towards the convex surface, of thing side towards the convex surface of image side; Described second lens (2) have negative power and towards the concave surface of thing side; Described 3rd lens (3) have negative power; Described lens assembly, the first lens (1), the second lens (2), the 3rd lens (3) meet following relationship:
1.2<F/F1<2.8；1<F3/F2<3；3.5<D1/T12<6.8；1.4<n1<1.56<n2<1.6<n3<1.8；
Wherein, F is the focal length of this lens assembly; F1 is the focal length of described first lens (1); F2 is the focal length of described second lens (2); F3 is the focal length of described 3rd lens (3); T12 is described first lens (1), the second lens (2) spacing distance on optical axis; D1 is the thickness of described first lens (1) on optical axis; N1, n2, n3 are respectively the refractive index of described first lens (1), the second lens (2), the 3rd lens (3).
7. large wide-angle large aperture high pixel lens assembly according to claim 6, it is characterized in that: described first lens (1) meet following relational expression :-1<R2/R1<-2, wherein R1 is the radius-of-curvature of described first lens (1) thing side surface; R2 is the radius-of-curvature on described first lens (1) surface, image side.
8. the large wide-angle large aperture high pixel lens assembly according to claim 1 or 6, it is characterized in that: described first lens (1), the second lens (2), the 3rd lens (3) meet following relationship: 0.8<Vd1/ (Vd2+Vd3) <2.3, wherein Vd1 is the Abbe number of described first lens (1); Vd2 is the Abbe number of described second lens (2); Vd3 is the Abbe number of described 3rd lens (3).
9. large wide-angle large aperture high pixel lens assembly according to claim 8, it is characterized in that: described second lens (2), the 3rd lens (3) meet following relationship: 25< Vd2<35,20< Vd3<25, wherein Vd2 is the Abbe number of described second lens (2); Vd3 is the Abbe number of described 3rd lens (3).
10. the large wide-angle large aperture high pixel lens assembly according to claim 1 or 6, it is characterized in that: the center thickness of described first lens (1) is 0.715 ~ 0.895mm, the center thickness of described second lens (2) is 0.425 ~ 0.695mm, and the center thickness of described 3rd lens (3) is 0.459 ~ 0.825mm.
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