CN203965709U - A kind of phtographic lens - Google Patents
A kind of phtographic lens Download PDFInfo
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- CN203965709U CN203965709U CN201420095138.XU CN201420095138U CN203965709U CN 203965709 U CN203965709 U CN 203965709U CN 201420095138 U CN201420095138 U CN 201420095138U CN 203965709 U CN203965709 U CN 203965709U
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- 238000003384 imaging method Methods 0.000 claims abstract description 14
- 239000011521 glass Substances 0.000 claims description 6
- 230000005499 meniscus Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000011982 device technology Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model relates to field of optical device technology, relate in particular to a kind of phtographic lens, adopt the structure of the preposition and four aspheric surface plastic lens of diaphragm, by special aspheric surface composite design, there is pixel cell less, modular volume is less, camera lens overall length is shorter, product yields is high, and imaging effect is good, lower-cost advantage.
Description
Technical field
The utility model relates to field of optical device technology, relates in particular to a kind of aspherical surface camera lens for mobile phone 8,000,000 pixel camera head mould groups.
Background technology
After 2013 start, from smart mobile phone processor to display screen, again to camera, even to the each related accessory of mobile phone, all present the at a high speed competition situation of upgrading.Because the flagship mobile phone configuration of current each brand is all similar, therefore finding product differentiation just becomes a thing of racking one's brains.And in some nearest mobile phone new products, we seem to find that manufacturer particularly payes attention to for the little high pixel camera lens of modular volume.
Annual mobile phone market is all experiencing huge change, the new science and technology continuing to bring out is also constantly improving consumer's eye and taste, and enrich constantly etc. " bright spot " of the diversification of mobile phone style, the decline of price and telecommunications service promoted continuous prosperity and the development of mobile phone market jointly.Along with the manufacturer coming into the market is more and more, being growing more intense of market competition and constantly making widely known of consumer's sex consciousness, cell phone manufacturer, when developing technology meets functional requirement, also does one's utmost to seek the attraction that mobile phone is new.On mobile phone market, the camera function of taking pictures has become the main flow of mobile phone configuration and basic function, predictably, will become trend and attraction for mobile phone is equipped with high-performance camera.Along with the universal of smart mobile phone and constantly upgrading, camera mobile phone basic configuration is improving constantly, imaging pixels is from the release of 100,000 pixels the earliest, 300,000 pixels, mega pixel, develop into the universal of 3,000,000 pixels, 5,000,000 pixels, now stride forward the configuration that 8,000,000 pixels are even higher, user is also just more and more higher for the quality requirements of mobile phone photograph image quality simultaneously, the good image quality of taking pictures just be unable to do without outstanding mobile phone camera configuration, visible, the phtographic lens that has high-quality has become development and the fashion trend of mobile phone.
Existing phtographic lens technology, how to meet lens assembly under high and low temperature environment in high-quality imaging effect, also possesses good processing and manufacturing ability, and further reduce the production cost of lens assembly, all become the satisfied requirement of optical lens assembly design needs to be applicable to producing in enormous quantities waiting.But existing phtographic lens also exists pixel cell larger, modular volume is larger, and camera lens overall length is longer, and product yields is low, and imaging effect is poor, the shortcoming that cost is higher.
Summary of the invention
The purpose of this utility model is to provide a kind of phtographic lens for the deficiencies in the prior art, has pixel cell less, and modular volume is less, and camera lens overall length is shorter, and product yields is high, and imaging effect is good, lower-cost advantage.
For achieving the above object, the utility model is achieved through the following technical solutions.
A kind of phtographic lens, it comprises the diaphragm, lenses one, lenses two, lenses three, lenses four and the glass filter that are arranged in order to imaging side from object side, and it adopts diaphragm preposition, and diaphragm is positioned at face order one side of lenses one; Described lenses one, lenses two, lenses three and lenses four are aspheric surface plastic lens, and the two sides of eyeglass is even aspheric surface; The two sides of described lenses one is convex surface; Described lenses two is meniscus, and convex surface is towards object space, and concave surface is towards image space; Described lenses three is concave-convex lens, and concave surface is towards object space, and convex surface is towards image space; Described lenses four is meniscus, and convex surface is towards object space, and concave surface is towards image space, and the two sides undulate of lenses four; The aspheric surface formula of described lenses one, lenses two, lenses three and lenses four is:
Wherein, z represents the Z coordinate figure of lens surface each point, and r represents the Y axial coordinate value of each point on lens surface, the inverse of the radius of curvature R that c is lens surface, and k is circular cone coefficient, α
1, α
2, α
3, α
4, α
5, α
6, α
7, α
8for high-order asphericity coefficient;
Wherein, the center of lens thickness T C of described lenses one is 0.568 ~ 0.588mm, and the center of lens thickness T C of lenses two is 0.234 ~ 0.254mm, and the center of lens thickness T C of lenses three is 0.611 ~ 0.631mm; The center of lens thickness T C of lenses four is 0.399 ~ 0.419mm; This kind of phtographic lens optics overall length is in 3.73mm, and field angle reaches 76 degree, and the outer visual field of axle key light line angle is less than 31 °.
Preferably, the center of lens thickness T C of described lenses one, and clearance thickness A C between lenses one and lenses two, its ratio TC/AC=10 ~ 14.
Preferably, the center of lens thickness T C of described lenses three, and clearance thickness A C between lenses two and lenses three, its ratio TC/AC=0.8 ~ 1.2.
Preferably, the effective focal length f1 of described lenses one, and the effective focal length f of whole lens assembly, its ratio f1/f=0.7 ~ 0.9.
Preferably, the radius of curvature R 2 of the face order two of described lenses one, and the radius of curvature R 1 of face order one, its ratio | R2/R1|=1 ~ 5.
The beneficial effects of the utility model are: a kind of phtographic lens described in the utility model, adopt the structure of the preposition and four aspheric surface plastic lens of diaphragm, by special aspheric surface composite design, there is pixel cell less, modular volume is less, and camera lens overall length is shorter, and product yields is high, imaging effect is good, lower-cost advantage.
Brief description of the drawings
Utilize accompanying drawing to be further detailed the utility model below, but the embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is MTF schematic diagram of the present utility model.
Fig. 3 is the curvature of field of the present utility model, distortion schematic diagram.
Fig. 4 is disc of confusion schematic diagram of the present utility model.
Fig. 5 is relative exposure schematic diagram of the present utility model.
Embodiment
Below in conjunction with concrete embodiment, the utility model is described.
As shown in Figures 1 to 5, a kind of phtographic lens, it comprises the diaphragm 6, lenses 1, lenses 22, lenses 33, lenses 44 and the glass filter 5 that are arranged in order from object side to imaging side 7, it adopts diaphragm 6 preposition, and diaphragm 6 is positioned at face order one 10 sides of lenses 1; Described lenses 1, lenses 22, lenses 33 and lenses 44 are aspheric surface plastic lens, and the two sides of eyeglass is even aspheric surface.Said lens system, in the time carrying out work, forms image at imaging plane successively from the light of object space incident after lenses 1, lenses 22, lenses 33, lenses 44 and glass filter 5.
With shown in Fig. 2, in the present embodiment, the two sides of described lenses 1 is convex surface as shown in Figure 1; Described lenses 22 is meniscus, and convex surface is towards object space, and concave surface is towards image space; Described lenses 33 is concave-convex lens, and concave surface is towards object space, and convex surface is towards image space; Described lenses 44 is meniscus, and convex surface is towards object space, and concave surface is towards image space, and the two sides of lenses 44 are face order 7 40 and face order 8 41 undulates.The utility model adopts the structure of four aspheric surface plastic lens, the feature of this non-spherical lens is, continually varying from lens center to periphery curvature, the spherical lens of certain curvature is different from having from lens center to periphery, non-spherical lens has better radius-of-curvature characteristic, have advantages of to improve and distort aberration and improve astigmatic image error, can make the visual field become larger and true, therefore, adopt after non-spherical lens, can eliminate as much as possible the aberration occurring in imaging, thereby improve image quality.
In the present embodiment, the aspheric surface formula of described lenses 1, lenses 22, lenses 33 and lenses 44 is:
Wherein, z represents the Z coordinate figure of lens surface each point, and r represents the Y axial coordinate value of each point on lens surface, the inverse of the radius of curvature R that c is lens surface, and k is circular cone coefficient, α
1, α
2, α
3, α
4, α
5, α
6, α
7, α
8for high-order asphericity coefficient.As preferred embodiment, the front surface of described lenses 1, lenses 22, lenses 33 and lenses 44 and the face shape parameter of rear surface are as follows respectively:
One 10 orders 2 11 of one 1 orders of lenses
c 1/ 1.89013236862954 1/ -2.82066060245822
k 4.958080615018 -54.99144064354
α
1 0
0
α
2 -0.2392652302323 -0.4084535542463
α
3 0.3818353423229 0.2745290196626
α
4 -3.878649995627 0.4031102167432
α
5 12.92847138341 -1.093222700605
α
6 -27.00274549421
-0.5908222317719
α
7 30.01566278525 3.027429643076
α
8 -15.76923362857 -2.381387939331
3 20 orders 4 21 of 22 orders of lenses
c 1/ 4.62085258199976 1/ 1.59910063708311
k 0 -3.532971822808
α
1 0
0
α
2 -0.1192597000349 0.04656861970775
α
3 -0.1263025232362 0.05396542840633
α
4 1.47882157148 -0.05359272423255
α
5 -2.315774255066 0.2703628940849
α
6 1.643068522862
0.5662063713431
α
7 -0.445077603156 -1.385631603725
α
8 -0.1233694373798 0.5930397099206
5 30 orders 6 31 of 33 orders of lenses
c 1/ -2.33746835941915 1/ -0.784342417100019
k -0.6304447105602 -5.558187105484
α
1 0
0
α
2 0.1866789565547 -0.4361438870441
α
3 -0.5162096954987 0.7543722085547
α
4 0.1609390907524 -0.9873011052872
α
5 1.616840318301 0.4051927633054
α
6 -3.321349720753 0.650133900419
α
7 2.919547189307 -0.6910396055538
α
8 -1.034259404766 0.180305381619
7 40 orders 8 41 of 44 orders of lenses
c 1/ 1.98564127111932 1/ 0.656591150272796
k -1.606733746014 -4.481133636325
α
1 0
0
α
2 -0.4565550903805 -0.2144643003852
α
3 0.2455691948737 0.1374927411067
α
4 -0.03681825299498 -0.06056708987348
α
5 -0.001165464523215 0.01384788189095
α
6 -0.003711436559791 -0.0004026248186707
α
7 0.001902623762964 -0.0004206703126681
α
8 -0.0002245178364794 0.00005456285501302
Wherein, preferably, the material of described lenses 1, lenses 33 and lenses 44 is ZEONEX series, the material that refractive index is higher and dispersion is lower that lenses 22 is selected than ZEONEX series, can effectively reduce lenses optics effective diameter, be conducive to whole lens assembly contour structures and realize subminiaturization.
In the present embodiment, in order to reduce better TV distortion and the chief ray shooting angle of system, need to specifically design described lenses 1, lenses 22, lenses 33 and lenses 44, specific as follows:
One, preferred, wherein, the center of lens thickness T C of described lenses 1 is 0.568 ~ 0.588mm, and the center of lens thickness T C of lenses 22 is 0.234 ~ 0.254mm, and the center of lens thickness T C of lenses 33 is 0.611 ~ 0.631mm; The center of lens thickness T C of lenses 44 is 0.399 ~ 0.419mm, can effectively optics overall length be foreshortened in 3.73mm.As optimum embodiment, the center of lens thickness T C of described lenses 1 is 0.578mm, and the center of lens thickness T C of lenses 22 is 0.244mm, and the center of lens thickness T C of lenses 33 is 0.621mm; The center of lens thickness T C of lenses 44 is 0.409mm.
Two, preferred, the center of lens thickness T C of described lenses 1, and clearance thickness A C between lenses 1 and lenses 22, its ratio TC/AC=10 ~ 14, the TV distortion value that can be conducive to control lens group is within the scope of specification value.
Three, preferred, the center of lens thickness T C of described lenses 33, and clearance thickness A C between lenses 22 and lenses 33, its ratio TC/AC=0.8 ~ 1.2, contribute to regulate the centrality of MTF curve S/T direction, be more conducive to management and control camera lens entirety picture element.
Four, preferred, the effective focal length f1 of described lenses 1, and the effective focal length f of whole lens assembly, its ratio f1/f=0.7 ~ 0.9, control the effective focal length f of lens assembly, ensure that the field angle of lens assembly reaches 76 degree, the outer visual field of axle key light line angle is less than 31 °.
Five, preferred, the radius of curvature R 2 of the face order 2 11 of described lenses 1, and the radius of curvature R 1 of face order 1, its ratio | R2/R1|=1 ~ 5, the deviation of adjusting mirror sheet material refractive index actual value and theoretical value, and effectively reduce the impact of moulding process.
From accompanying drawing 1 ~ 5 and embodiment, can find out that a kind of phtographic lens described in the utility model has following features:
1, adopt diaphragm preposition, when ensureing systematic eccentricity tilt sensitive degree, improve center view field imaging quality, reach the image quality of 8,000,000 pixels;
2, optics overall length foreshortens in 3.73mm; Field angle reaches 76 degree, and the outer visual field of axle key light line angle is less than 31 °, caters to mobile lens recent development trend, meets current mobile phone market 1/4 " needs of 8,000,000 pixel camera lenses;
3, FNO2.2 large aperture, increases light-inletting quantity, improves the shooting ability under low light environment;
4, adopt four aspheric surface plastic lens, can effectively eliminate all kinds of aberrations, obtain good imaging effect, use resins for universal use material on the market to replace glass simultaneously, forming technique is stablized and technical maturity, low and the higher problem of cost of the product yield that solved the processing difficulties of glass mirror and cause, has pixel cell less, and modular volume is less, camera lens overall length is shorter, product yields is high, and imaging effect is good, lower-cost advantage.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (5)
1. a phtographic lens, it is characterized in that: it comprises the diaphragm (6), lenses one (1), lenses two (2), lenses three (3), lenses four (4) and the glass filter (5) that are arranged in order from object side to imaging side (7), it adopts diaphragm (6) preposition, and diaphragm (6) is positioned at face order one (10) side of lenses one (1); Described lenses one (1), lenses two (2), lenses three (3) and lenses four (4) are aspheric surface plastic lens, and the two sides of eyeglass is even aspheric surface; The two sides of described lenses one (1) is convex surface; Described lenses two (2) is meniscus, and convex surface is towards object space, and concave surface is towards image space; Described lenses three (3) is concave-convex lens, and concave surface is towards object space, and convex surface is towards image space; Described lenses four (4) is meniscus, and convex surface is towards object space, and concave surface is towards image space, and the two sides undulate of lenses four (4); The aspheric surface formula of described lenses one (1), lenses two (2), lenses three (3) and lenses four (4) is:
Wherein, z represents the Z coordinate figure of lens surface each point, and r represents the Y axial coordinate value of each point on lens surface, the inverse of the radius of curvature R that c is lens surface, and k is circular cone coefficient, α
1, α
2, α
3, α
4, α
5, α
6, α
7, α
8for high-order asphericity coefficient;
Wherein, the center of lens thickness T C of described lenses one (1) is 0.568 ~ 0.588mm, and the center of lens thickness T C of lenses two (2) is 0.234 ~ 0.254mm, and the center of lens thickness T C of lenses three (3) is 0.611 ~ 0.631mm; The center of lens thickness T C of lenses four (4) is 0.399 ~ 0.419mm; This kind of phtographic lens optics overall length is in 3.73mm, and field angle reaches 76 degree, and the outer visual field of axle key light line angle is less than 31 °.
2. a kind of phtographic lens according to claim 1, is characterized in that: the center of lens thickness T C of described lenses one (1), and clearance thickness A C between lenses one (1) and lenses two (2), its ratio TC/AC=10 ~ 14.
3. a kind of phtographic lens according to claim 1, is characterized in that: the center of lens thickness T C of described lenses three (3), and clearance thickness A C between lenses two (2) and lenses three (3), its ratio TC/AC=0.8 ~ 1.2.
4. a kind of phtographic lens according to claim 1, is characterized in that: the effective focal length f1 of described lenses one (1), and the effective focal length f of whole lens assembly, its ratio f1/f=0.7 ~ 0.9.
5. a kind of phtographic lens according to claim 1, is characterized in that: the radius of curvature R 2 of the face order two (11) of described lenses one (1), and the radius of curvature R 1 of face order one (10), and its ratio | R2/R1|=1 ~ 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095138.XU CN203965709U (en) | 2014-03-04 | 2014-03-04 | A kind of phtographic lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095138.XU CN203965709U (en) | 2014-03-04 | 2014-03-04 | A kind of phtographic lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965709U true CN203965709U (en) | 2014-11-26 |
Family
ID=51926270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420095138.XU Expired - Lifetime CN203965709U (en) | 2014-03-04 | 2014-03-04 | A kind of phtographic lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020550A (en) * | 2014-03-04 | 2014-09-03 | 东莞市旭业光电科技有限公司 | Photographic lens |
| CN105093495A (en) * | 2015-03-17 | 2015-11-25 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device using the same |
-
2014
- 2014-03-04 CN CN201420095138.XU patent/CN203965709U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020550A (en) * | 2014-03-04 | 2014-09-03 | 东莞市旭业光电科技有限公司 | Photographic lens |
| CN104020550B (en) * | 2014-03-04 | 2016-10-05 | 广东旭业光电科技股份有限公司 | A kind of phtographic lens |
| CN105093495A (en) * | 2015-03-17 | 2015-11-25 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device using the same |
| CN105093495B (en) * | 2015-03-17 | 2017-11-10 | 玉晶光电(厦门)有限公司 | The electronic installation of optical imaging lens and the application optical imaging lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG XUYE OPTOELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER NAME: DONGGUAN XUYE OPTOELECTRONIC TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 523000 Guangdong province Dongguan City Shipai town of Fulong Industrial Zone Second Road two Patentee after: GUANGDONG XUYE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 523000 Guangdong Province, Dongguan City Shipai Town Industrial Zone seven second Fulong road Dongguan xuye Photoelectric Technology Co. Ltd. Patentee before: Dongguan Xuye Photoelectric Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
|
| CX01 | Expiry of patent term |