CN108227154A - A kind of mobile phone wide-angle zoom lens - Google Patents
A kind of mobile phone wide-angle zoom lens Download PDFInfo
- Publication number
- CN108227154A CN108227154A CN201810252577.XA CN201810252577A CN108227154A CN 108227154 A CN108227154 A CN 108227154A CN 201810252577 A CN201810252577 A CN 201810252577A CN 108227154 A CN108227154 A CN 108227154A
- Authority
- CN
- China
- Prior art keywords
- lens
- mobile phone
- angle zoom
- phone wide
- focal length
- 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.)
- Pending
Links
- 230000005499 meniscus Effects 0.000 claims abstract description 9
- 239000006185 dispersion Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000004075 alteration Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- G02B13/0045—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 five or more lenses
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of mobile phone wide-angle zoom lens, include the first lens, the second lens, third lens, the 4th lens, diaphragm, the 5th lens and the 6th lens successively from the object side to the image side；First lens, the second lens, third lens are all negative curved month type spherical lens；4th lens are the negative meniscus lens that two sides is all even aspheric surface；5th lens are the positive meniscus lens that two sides is all even aspheric surface；6th lens are the biconcave lens that two sides is all even aspheric surface；Entire zoom lens less number of lenses, size is small, and optics overall length is less than 12mm, and optical zoom ratio can be close to 2 times.Desired zoom ratio can be reached by the airspace changed between each lens, in entire zooming range, can realize higher image quality.
Description
Technical field
The present invention relates to a kind of optical lens more particularly to a kind of mobile phone wide-angle zoom lens.
Background technology
The high speed development of smart mobile phone makes people higher and higher to the various functions requirement of mobile phone in recent years, and mobile phone is taken pictures
Level has become the important indicator that consumer weighs handset capability.
Existing mobile lens are limited to the narrow space of mobile phone, and most of using tight shot, focal length is consolidated
Fixed, camera lens visual angle is fixed, and no image of Buddha traditional camera obtains best shooting effect by optical zoom like that, even with
The means of Digital Zoom still can reduce image quality, be not achieved the imaging effect of optical zoom.
Invention content
The purpose of the present invention is to provide a kind of small sizes, and eyeglass is few, have the mobile phone wide-angle zoom mirror of high imaging quality
Head.
To achieve the object of the present invention, technical solution provided by the invention is：
A kind of mobile phone wide-angle zoom lens include the first lens, the second lens, third lens, the 4th successively from the object side to the image side
Lens, diaphragm, the 5th lens and the 6th lens；First lens, the second lens, third lens are all that negative curved month type spherical surface is saturating
Mirror；4th lens are the negative meniscus lens that two sides is all even aspheric surface；5th lens are all even aspheric surfaces for two sides
Positive meniscus lens；6th lens are the biconcave lens that two sides is all even aspheric surface.
First lens, the second lens refractive index be all 1.638540, dispersion is all 55.423596.
The refractive index of the third lens is 1.603420, dispersion 38.029919.
The refractive index of 4th lens is 1.487490, dispersion 70.405771.
The refractive index of 5th lens is 1.539960, dispersion 59.708587.
The refractive index of 6th lens is 1.523438, dispersion 56.759556.
The mobile phone wide-angle zoom lens, meet relational expression：7mm≤TTL≤12mm, wherein TTL are wide for the mobile phone
The object space side outermost point of angle zoom lens to imaging surface distance.
The mobile phone wide-angle zoom lens, meet relational expression：fT/fw>=1.6, wherein fTMaximum focal length is in for system
When effective focal length, fwEffective focal length during minimum focus is in for system.
The mobile phone wide-angle zoom lens, meet relational expression：FOV≥64。, wherein FOV is the mobile phone wide-angle zoom
The maximum field of view angle of camera lens.
The mobile phone wide-angle zoom lens, the maximum focal length that lens zoom reaches are 3.17mm, and the minimum focus reached is
1.89mm。
Compared with prior art, the present invention has the advantages that：The present invention uses 3 spherical lenses and 3 aspheric
Face lens combination, has effectively corrected aberration, greatly improves image quality, and with larger field angle, size is small, light
Total length is learned, while the zoom ratio close to 2 times can be reached, is adapted to the image quality of mobile lens and size requirement.
Description of the drawings
Fig. 1 is structure diagram when camera lens of the present invention is in maximum focal length.
Fig. 2 is structure diagram when camera lens of the present invention is in minimum focus.
Fig. 3 is the curvature of field and the schematic diagram that distorts when camera lens of the present invention is in maximum focal length.
Fig. 4 is the curvature of field and the schematic diagram that distorts when camera lens of the present invention is in minimum focus.
Fig. 5 is MTF curve figure when camera lens of the present invention is in maximum focal length.
Fig. 6 is MTF curve figure when camera lens of the present invention is in minimum focus.
Fig. 7 is point range figure when camera lens of the present invention is in maximum focal length.
Fig. 8 is point range figure when camera lens of the present invention is in minimum focus.
Specific embodiment
As shown in Figure 1, a kind of mobile phone wide-angle zoom lens provided by the invention, are followed successively by the first lens from the object side to the image side
1, the second lens 2, third lens 3, the 4th lens 4, diaphragm 5, the 5th lens 6, the 6th lens 7 and image planes 8.Described first thoroughly
Mirror 1, the second lens 2, third lens 3 are negative curved month type spherical lens, and the 4th lens 4 are all even aspheric surfaces for two sides
Negative meniscus lens, the 5th lens 6 for two sides be all even aspheric surface positive meniscus lens, the 6th lens 7
All it is the biconcave lens of even aspheric surface for two sides.
In the present invention, the first lens 1, the second lens 2 and third lens 3 constitute the lens group with negative power,
Using such structure so that camera lens can achieve the purpose that wide-angle by the light of larger field.
In the present invention, the 4th lens 4, the 5th lens 6 and the 6th lens 7 are all the aspheric that two sides is all even aspheric surface
Face lens, lens curved surface can be very good to correct aberration using aspherical, reach higher image quality requirement.
In the present invention, using lens construction as shown in Figure 1, then with optical CAD software, to parameters into
Row successive optimization corrects aberration, realizes by aberration control within 5%, and optics overall length is controlled within 12mm, and zoom ratio is big
In 1.6 purpose.
In the present invention, the 4th lens 4, the 5th lens 6 and the 6th lens 7 are aspherical meets below equation：
In formula：Z be it is aspherical along optical axis direction when being highly h positions, apart from aspheric vertex of surface apart from rise.
C=1/r, r represent the radius of curvature of aspheric vertex of surface, and k is circular cone coefficient, and A, B, C, D, E are high order aspheric surface system
Number.
In the present invention, when system focal length is in maximum focal length, F=3.17mm, FOV=64。, FNO=4.62, TTL=
8.13mm。
In the present invention, when system focal length is in minimum focus, F=1.89mm, FOV=64。, FNO=2.88, TTL=
10.10mm。
F is the whole focal length value of camera lens, and FNO is f-number, and FOV is full filed angle, and TTL is optical lens overall length.
In the present invention, when system focal length is in maximum focal length, optical system parameter table is shown in Table 1
Table 1
The minute surface that " * " number is beaten in table 1 is aspherical.
In the present invention, when system focal length is in minimum focus, optical system parameter table is shown in Table 2
Table 2
| Face serial number | Radius of curvature | Center thickness | Refractive index | Abbe constant |
| 1 | 5.941 | 1.2 | 1.638540 | 55.423596 |
| 2 | 2.949 | 1.326 | ||
| 3 | 6.541 | 0.349 | 1.638540 | 55.423596 |
| 4 | 2.721 | 1.179 | ||
| 5 | 1.909 | 0.751 | 1.603420 | 38.029919 |
| 6 | 2.974 | 1.418 | ||
| *7 | 1.199 | 0.925 | 1.487490 | 70.405771 |
| *8 | 8.511 | 0.017 | ||
| 9 | infinity | 0.525 | ||
| *10 | -2.344 | 1.220 | 1.539960 | 59.708587 |
| *11 | -0.741 | 0.125 | ||
| *12 | 4.507 | 0.524 | 1.523438 | 56.759556 |
| *13 | 0.680 | 0.545 | ||
| IMA | infinity |
The minute surface that " * " number is beaten in table 2 is aspherical.
Only change the airspace between eyeglass in zooming procedure, i.e. asphericity coefficient in Tables 1 and 2 is completely the same
's.
Asphericity coefficient k, A, B, C, D, E concrete numerical value in Tables 1 and 2 is shown in Table 3, and the coefficient E in table 3 represents science
Mark.
Table 3
| Face serial number | k | A | B | C | D | E |
| 7 | -0.138 | 5.931E-03 | 8.316E-03 | 0.047 | -0.012 | 0 |
| 8 | 429.613 | -2.379E-03 | -0.05 | 0.377 | -0.751 | 0 |
| 10 | 4.323 | 0.044 | -0.381 | 1.640 | -0.967 | 0 |
| 11 | -0.954 | 0.313 | -0.414 | 0.103 | 0.126 | 0 |
| 12 | -1239.85 | -0.326 | 0.226 | -0.140 | -0.276 | 0.192 |
| 13 | -8.441 | -0.117 | 0.039 | -0.074 | 0.032 | -5.36E-03 |
It is structure diagram when camera lens of the present invention is in maximum focal length referring to Fig. 1.
It is structure diagram when camera lens of the present invention is in minimum focus referring to Fig. 2.
It is the curvature of field and the schematic diagram that distorts when camera lens of the present invention is in maximum focal length referring to Fig. 3.
It is the curvature of field and the schematic diagram that distorts when camera lens of the present invention is in minimum focus referring to Fig. 4.
It is MTF curve figure when camera lens of the present invention is in maximum focal length referring to Fig. 5.
It is MTF curve figure when camera lens of the present invention is in minimum focus referring to Fig. 6.
It is point range figure when camera lens of the present invention is in maximum focal length referring to Fig. 7.
It is point range figure when camera lens of the present invention is in minimum focus referring to Fig. 8.
From Fig. 1-8 it can be seen that this optical system has good optical property, realize to reach under zoom system, pancreatic system and regard greatly
, the characteristic of low distortion.
Claims (6)
1. a kind of mobile phone wide-angle zoom lens, it is characterised in that：The camera lens includes the first lens, the successively from the object side to the image side
Two lens, third lens, the 4th lens, diaphragm, the 5th lens and the 6th lens；First lens, the second lens, third lens
It is all negative meniscus lens；4th lens are the negative meniscus lens that two sides is all even aspheric surface；5th lens for two sides all
It is the positive meniscus lens of even aspheric surface；6th lens are the biconcave lens that two sides is all even aspheric surface.
2. mobile phone wide-angle zoom lens as described in claim 1, it is characterised in that：Meet conditional：7mm≤TTL≤12mm,
Wherein TTL be the mobile phone wide-angle zoom lens object space side outermost point to image planes distance.
3. mobile phone wide-angle zoom lens as described in claim 1, it is characterised in that：Meet conditional：fT /fw>=1.6, wherein
fTThe effective focal length at maximum focal length, f are in for camera lenswThe effective focal length being in for camera lens at minimum focus.
4. mobile phone wide-angle zoom lens as described in claim 1, it is characterised in that：Meet conditional：FOV≥64°, wherein FOV
Maximum field of view angle for the mobile phone wide-angle zoom lens.
5. mobile phone wide-angle zoom lens as described in claim 1, it is characterised in that：The folding of first lens, the second lens
The rate of penetrating is all 1.638540, and dispersion is all 55.423596；The refractive index of the third lens is 1.603420, and dispersion is
38.029919；The refractive index of 4th lens is 1.487490, dispersion 70.405771；The refractive index of 5th lens
It is 1.539960, dispersion 59.708587；The refractive index of 6th lens is 1.523438, dispersion 56.759556.
6. mobile phone wide-angle zoom lens as described in claim 1, it is characterised in that：The mobile phone wide-angle zoom lens zoom reaches
The maximum focal length arrived is 3.17mm, and the minimum focus reached is 1.89mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252577.XA CN108227154A (en) | 2018-03-26 | 2018-03-26 | A kind of mobile phone wide-angle zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252577.XA CN108227154A (en) | 2018-03-26 | 2018-03-26 | A kind of mobile phone wide-angle zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108227154A true CN108227154A (en) | 2018-06-29 |
Family
ID=62660027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810252577.XA Pending CN108227154A (en) | 2018-03-26 | 2018-03-26 | A kind of mobile phone wide-angle zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108227154A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839727A (en) * | 2018-12-31 | 2019-06-04 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN111999844A (en) * | 2020-08-31 | 2020-11-27 | 泰兴市汇龙光电仪器有限公司 | Mini-type optical imaging system capable of adjusting optical total length |
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| JP2004354572A (en) * | 2003-05-28 | 2004-12-16 | Minolta Co Ltd | Imaging apparatus |
| KR20060107651A (en) * | 2005-04-11 | 2006-10-16 | 후지논 가부시키가이샤 | Zoom lens |
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| CN111999844A (en) * | 2020-08-31 | 2020-11-27 | 泰兴市汇龙光电仪器有限公司 | Mini-type optical imaging system capable of adjusting optical total length |
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Application publication date: 20180629 |
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