CN206387955U - A kind of compact high-pixel mobile phone lens - Google Patents
A kind of compact high-pixel mobile phone lens Download PDFInfo
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- CN206387955U CN206387955U CN201621359821.5U CN201621359821U CN206387955U CN 206387955 U CN206387955 U CN 206387955U CN 201621359821 U CN201621359821 U CN 201621359821U CN 206387955 U CN206387955 U CN 206387955U
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Abstract
The utility model provides a kind of compact high-pixel mobile phone lens, includes the first lens, diaphragm, the second lens and the 3rd lens successively from the object side to the image side；First lens are the meniscus lens with positive light coke, and convex surface facing object space, two sides is all the glass lens of even aspheric surface；Second lens are the concave-convex lens of positive light coke, and concave surface is towards object plane, and convex surface facing image planes, and two sides is all the glass lens of even aspheric surface；3rd lens are the biconcave lens with negative power, and two sides is all even aspheric surface plastic lens；The compact high-pixel mobile phone lens are met：4.94mm≤TTL≤6.045mm, TTL for the compact high-pixel mobile phone lens the first lens object space side outermost point to imaging surface distance.Camera lens provided by the utility model has compact conformation, and visual angle is wider, the advantage of small distortion and higher imaging definition.
Description
【Technical field】
The utility model is related to a kind of optical lens, more particularly to a kind of compact high-pixel mobile phone lens.
【Background technology】
The initial stage being born in the camera of the electronic equipments such as mobile phone, its pixel 300,000 or so, image quality is poor, it is impossible to full
Sufficient user's high definition is taken pictures demand, while also there is the less shortcoming of the angle of visual field.
Therefore, mobile lens how to be met while compact conformation is realized, it is larger also with better quality imaging effect
The requirement of the angle of visual field is those skilled in the art's technical problem urgently to be resolved hurrily.
【Utility model content】
To overcome the shortcomings of that prior art is present.The utility model provides a kind of compact high-pixel mobile phone lens.
The technical scheme that the utility model solves technical problem is to provide a kind of compact high-pixel mobile phone lens, from object space
Include the first lens, diaphragm, the second lens and the 3rd lens successively to image space；First lens are the bent moons with positive light coke
Lens, and convex surface facing object space, two sides is all the glass lens of even aspheric surface；Second lens are that the bumps of positive light coke are saturating
Mirror, concave surface is towards object plane, and convex surface facing image planes, and two sides is all the glass lens of even aspheric surface；3rd lens are that have to bear
The biconcave lens of focal power, and two sides is all even aspheric surface plastic lens；The compact high-pixel mobile phone lens are met：
4.94mm≤TTL≤6.045mm, TTL for the compact high-pixel mobile phone lens the first lens object space side outermost point into
The distance of image planes.
Preferably, the compact high-pixel mobile phone lens meet conditional：1.14≤TTL/EFL≤1.46, wherein,
EFL is the total focal length value of the compact high-pixel mobile phone lens.
Preferably, the compact high-pixel mobile phone lens meet conditional：- 1.84≤TTL/FFL≤- 1.22, wherein
FFL is distance of the first lens image side outermost point to imaging surface.
Preferably, the compact high-pixel mobile phone lens meet conditional：0.118≤BFL/EFL≤0.176, wherein
BFL for compact high-pixel mobile phone lens the 3rd lens image side outermost point to imaging surface distance.
Preferably, the compact high-pixel mobile phone lens meet conditional：60 °≤FOV≤66 °, wherein FOV is the mirror
The maximum field of view angle of head.
Preferably, the first lens meet following condition formulas：0.017≤(d/H)/FOV≤0.02, wherein d represents maximum
The first lens corresponding to the angle of visual field are towards the maximum clear aperture on object space convex surface, and H represents the imaging corresponding to maximum field of view angle
Image height.
Preferably, first lens meet following condition formulas：Nd≤1.494, Vd >=70.04, wherein, Nd is refraction
Rate, Vd Ah 's Bel's constants.
Preferably, the even aspheric surface minute surface formula is met：
Wherein, h represents the Y-axis coordinate value of each point on lens surface, and c is the radius of curvature r of lens surface inverse, and k is
Circular cone coefficient, a1、a2、a3、a4、a5For order aspherical coefficients, Z be it is aspherical along optical axis direction at the position that height is h, away from
Distance vector from aspheric vertex of surface is high.
The compact high-pixel mobile phone lens that the utility model is provided use diaphragm preposition to ensure that it is quick that systematic eccentricity is tilted
Sensitivity, the first lens, the second lens and the 3rd lens use even aspheric surface, and top step number is 12 ranks, can effectively be disappeared
Except all kinds of aberrations, good imaging effect is obtained.
Meanwhile, to increase the thermo mechanical stability and wearability of the camera lens, adopted in lens of the outermost end close to object space side
Use Glass aspheric；To improve as matter, and increase the compactedness of structure, intermediate lens also uses Glass aspheric, close to CMOS
The lens at end use plastic aspherical element, and use glass lens and glass lens mixed optical path structure, improve the performance of camera lens.
Further, coordinating rationally controls the focal length between each lens to distribute, and realizes the ultrashort focal length cramped construction of the camera lens,
Keep obtaining angle of visual field maximization, object lens of large relative aperture, small distortion and higher imaging definition, while central vision when TTL is smaller
Image quality is higher, reaches the high definition image quality of 3,100,000 pixels.The need for meeting current mobile phone market high definition camera lens.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of compact high-pixel mobile phone lens first embodiment of the utility model.
Fig. 2A is a kind of chromatic curve figure of compact high-pixel mobile phone lens first embodiment of the utility model.
Fig. 2 B are a kind of astigmatism curvature of field line charts of compact high-pixel mobile phone lens first embodiment of the utility model.
Fig. 2 C are a kind of distortion aberration curves of compact high-pixel mobile phone lens first embodiment of the utility model
Fig. 3 is a kind of MTF curve figure of compact high-pixel mobile phone lens first embodiment of the utility model.
Fig. 4 is a kind of structural representation of compact high-pixel mobile phone lens second embodiment of the utility model.
Fig. 5 A are a kind of chromatic curve figures of compact high-pixel mobile phone lens second embodiment of the utility model.
Fig. 5 B are a kind of astigmatism curvature of field line charts of compact high-pixel mobile phone lens second embodiment of the utility model.
Fig. 5 C are a kind of distortion aberration curves of compact high-pixel mobile phone lens second embodiment of the utility model
Fig. 6 is a kind of MTF curve figure of compact high-pixel mobile phone lens second embodiment of the utility model.
【Embodiment】
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
Referring to Fig. 1, the utility model provides a kind of compact high-pixel mobile phone lens, the compact high-pixel mobile phone
Camera lens is followed successively by the first lens L1 by object space to image space, diaphragm (FNO), the second lens L2, the 3rd lens L3, colour filter GF and
Imaging surface IMA.First lens L1 is the meniscus lens with positive light coke, and convex surface facing object space, two sides is all even aspheric
The glass lens in face.Second lens L2 is the concave-convex lens of positive light coke, and concave surface is towards object plane, convex surface facing image planes, and two sides
All it is the glass lens of even aspheric surface.3rd lens L3 is the biconcave lens with negative power, and two sides is all that even is non-
The plastic lens of sphere.
Further, the first lens L1 materials use QK3 glass, and glass transition temperature Tg is 475 DEG C, easily using hot-die
Pressure technology carries out batch machining.Second lens L2 uses BAK2 glass, and inversion point temperature is 555 DEG C, and the introducing of glass lens
Heat-mechanical stability of the camera lens is also enhanced, the service life of camera lens is improved.3rd lens L3 uses plastic material Z-
E48R, the resin material substitution glass of high-refractivity and low-dispersion, forming technique stabilization and technical maturity, solve glass lens
Low production efficiency and the problem of higher cost caused by processing difficulties.
In the present embodiment：F=2.8mm, aperture FNO=2.8, ANG=33 ° of angle of half field-of view, TTL=6.045mm, TTL
For compact high-pixel mobile phone lens the first lens L1 object spaces side outermost point to the distance of imaging side, ANG is angle of half field-of view
Angle.
Meanwhile, the even aspheric surface minute surface formula in the present embodiment is met：
In above formula：H represents the Y-axis coordinate value of each point on lens surface, and c is the radius of curvature r of lens surface inverse, k
For circular cone coefficient, a1、a2、a3、a4、a5For order aspherical coefficients, and the e in coefficient represents scientific notation, such as e-05Represent 10-5, Z be it is aspherical along optical axis direction height be h position when, apart from aspheric vertex of surface distance vector height.
The relevant parameter of form one is the compact high-pixel mobile phone lens from object space (OBJ) to all of image space (IMA)
The surface type in each face of lens, radius of curvature, center thickness, half clear aperture, the phase such as refractive index and Abel's constant
Related parameter.
Form one：
Form two is the asphericity coefficient table of each minute surface.
Form two：
The relevant parameter of form three is the of the compact high-pixel mobile phone lens
One lens, the second lens, the 3rd respective focal length value of lens and relevant parameter.
Form three：
| Basic parameter | EFL | BFL | TTL | FFL | d | H |
| Numerical value (mm) | 5.3 | 0.934 | 6.045 | -4.94 | 3.78 | 3.44 |
| Basic parameter | F1 | F2 | F3 | |||
| Numerical value (mm) | 5.74 | 3.19 | -3.45 |
Wherein, EFL is the total focal length value of compact high-pixel mobile phone lens, and BFL is compact high-pixel mobile phone lens
3rd lens L3 image sides outermost point is to the distance of imaging surface, and TTL is the first lens of the compact high-pixel mobile phone lens
L1 object spaces side outermost point is to the distance of imaging surface, and FFL is the first lens L1 image side outermosts of compact high-pixel mobile phone lens
Put to the distance of imaging surface.
D represents maximum clear aperture of the first lens corresponding to maximum field of view angle towards object space convex surface, and H represents that maximum is regarded
The image height of imaging corresponding to rink corner.
F1, F2, F3 represent the respective focal length value of first, second and third lens respectively.
Refer to Fig. 2A -2C and Fig. 3.Fig. 2A is chromatic curve figure (being also spherical aberration curve map), by conventional red (C),
The wavelength of green (D), blue (F) light represents that unit is mm.Fig. 2 B are astigmatism curvature of field line charts, represent compact high-pixel mobile phone mirror
The filed curvature degree that is imaged caused by astigmatism of head, by commonly using green (D) light representations, unit is that ray aberration is only deposited in mm, figure
Imaging performance is excellent in the range of from -0.25 to 0.25, meets the shooting requirement of medium-to-high grade mobile phone.Fig. 2 C are distortion curves
Figure, represents the distortion sizes values in the case of the different angles of visual field, at peripheral field, and distortion reaches maximum.Fig. 3 is optical system
Modulation transfer function curve map, i.e. mtf value curve map, its abscissa and ordinate are respectively spatial frequency and optics in image planes
The optical transfer function value of system, expression be resolution of lens size, at 185lp/mm spatial frequencys, peripheral field angle
Mtf value minimum be about 0.2, i.e. camera lens image quality index MTF it is also fine in limiting frequency.
Referring to Fig. 4, compact high-pixel mobile phone lens and first that the utility model second embodiment is provided are implemented
Unlike example：ANG=30 ° of angle of half field-of view, TTL=4.94mm.
The relevant parameter of form four be the compact high-pixel mobile phone lens from object space (OBJ) to image space (IMA), it is all
The surface type in each face of lens, radius of curvature, center thickness, half clear aperture, the phase such as refractive index and Abel's constant
Related parameter.
Form four：
Form five is the asphericity coefficient table of each minute surface.
Form five
The relevant parameter of form six is that the first lens, the second lens, the 3rd lens of the compact high-pixel mobile phone lens are each
From focal length value and relevant parameter.
Form six：
| Basic parameter | EFL | BFL | TTL | FFL | d | H |
| Numerical value (mm) | 3.39 | 0.4 | 4.94 | -2.68 | 2.4 | 1.96 |
| Basic parameter | F1 | F2 | F3 | |||
| Numerical value (mm) | 5.49 | 2.386 | -2.827 |
The compact high-pixel mobile phone lens are met：4.94mm≤TTL≤6.045mm, TTL are the high pixel of the compact
First lens object space side outermost point of mobile lens to imaging surface distance；1.14≤TTL/EFL≤1.46, EFL is described tight
Gather the total focal length values of type high-pixel mobile phone lens；- 1.84≤TTL/FFL≤- 1.22, wherein FFL be the first lens image side most
Exterior point to imaging surface distance；0.118≤BFL/EFL≤0.176, wherein BFL are the 3rd of compact high-pixel mobile phone lens
Lens image side outermost point to imaging surface distance.60 °≤FOV≤66 °, wherein FOV is the maximum field of view angle of the camera lens.
First lens L1 meets following condition formulas：0.017≤(d/H)/FOV≤0.02, and meet Nd≤1.494, Vd
>=70.04 low chromatic dispersion material of low-refraction.Light transmittance in energy effective compensation optical system coordinates between each lens simultaneously
Rational distribution focal power, to reach that higher solution obtains picture rich in detail information as level.Wherein Nd is refractive index, and Vd is Abbe
Constant.
Second lens L2 uses the high chromatic dispersion material of high index of refraction of Nd >=1.54, Vd >=59.72.66 ° can effectively be imported
Angle of visual field light and the bore for reducing first lens, to avoid volume excessive.
Fig. 5 A-5C and Fig. 6, Fig. 5 A are referred to for chromatic curve figure (can also be spherical aberration curve map), it is red by what is commonly used
(C) wavelength of, green (D), blue (F) light is represented.Fig. 5 B are astigmatism curvature of field line charts, represent compact high-pixel mobile phone lens by picture
The filed curvature degree of imaging caused by dissipating, is only existed from -0.15 to 0.15 by commonly using ray aberration in green (D) light representations, figure
In the range of, imaging performance is excellent, meets the shooting requirement of medium-to-high grade mobile phone.Fig. 5 C are distortion curve figures, represent different visual fields
Distortion sizes values in the case of angle, at peripheral field, distortion reaches maximum.Fig. 6 is that the modulation transfer function of optical system is bent
Line chart, i.e. mtf value curve map, abscissa and ordinate are respectively the optical delivery letter of spatial frequency in image planes and optical system
Numerical value, expression be resolution of lens size, at 185lp/mm spatial frequencys, the mtf value minimum at peripheral field angle is about
The image quality index MTF of 0.3, i.e. camera lens is also fine in limiting frequency.
The compact high-pixel mobile phone lens that the utility model is provided use diaphragm preposition to ensure that it is quick that systematic eccentricity is tilted
Sensitivity, the first lens, the second lens and the 3rd lens use even aspheric surface, and top step number is 12 ranks, can effectively be disappeared
Except all kinds of aberrations, good imaging effect is obtained.
Meanwhile, to increase the thermo mechanical stability and wearability of the camera lens, adopted in lens of the outermost end close to object space side
Use Glass aspheric；To improve as matter, and increase the compactedness of structure, intermediate lens also uses Glass aspheric, close to CMOS
The lens at end use plastic aspherical element, and use glass lens and glass lens mixed optical path structure, improve the performance of camera lens.
Further, coordinating rationally controls the focal length between each lens to distribute, and realizes the ultrashort focal length cramped construction of the camera lens,
Keep obtaining angle of visual field maximization, object lens of large relative aperture, small distortion and higher imaging definition, while central vision when TTL is smaller
Image quality is higher, reaches the high definition image quality of 3,100,000 pixels.The need for meeting current mobile phone market high definition camera lens.
The utility model preferred embodiment is the foregoing is only, it is all in this reality not to limit the utility model
With any modification made within new principle, equivalent substitution and improvement etc. should be included in the utility model protection domain.
Claims (8)
1. a kind of compact high-pixel mobile phone lens, it is characterised in that：From the object side to the image side successively include the first lens, diaphragm,
Second lens and the 3rd lens；
First lens are the meniscus lens with positive light coke, and convex surface facing object space, two sides is all the glass of even aspheric surface
Lens；Second lens are the concave-convex lens of positive light coke, and concave surface is towards object plane, and convex surface facing image planes, and two sides is all that even is non-
The glass lens of sphere；3rd lens are the biconcave lens with negative power, and two sides is all even aspheric surface plastic lens；
The compact high-pixel mobile phone lens are met：4.94mm≤TTL≤6.045mm, TTL are the compact high-pixel mobile phone
First lens object space side outermost point of camera lens to imaging surface distance.
2. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：Meet conditional：1.14≤TTL/
EFL≤1.46, wherein, EFL is the total focal length value of the compact high-pixel mobile phone lens.
3. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：Meet conditional -1.84≤TTL/
FFL≤- 1.22, wherein FFL is distance of the first lens image side outermost point to imaging surface.
4. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：Meet 0.118≤BFL/ of conditional
EFL≤0.176, wherein BFL for compact high-pixel mobile phone lens the 3rd lens image side outermost point to imaging surface distance.
5. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：Meet 60 °≤FOV of conditional≤
66 °, wherein FOV is the maximum field of view angle of the camera lens.
6. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：It is public that first lens meet following conditions
Formula：0.017≤(d/H)/FOV≤0.02, wherein d represents the first lens corresponding to maximum field of view angle towards object space convex surface most
Big clear aperture, H represents the image height of the imaging corresponding to maximum field of view angle.
7. compact high-pixel mobile phone lens as claimed in claim 1, it is characterised in that：It is public that first lens meet following conditions
Formula：Nd≤1.494, Vd >=70.04, wherein, Nd is refractive index, Vd Ah 's Bel's constants.
8. the compact high-pixel mobile phone lens as described in claim 1-7 any one, it is characterised in that：Even aspheric surface mirror
Face formula is met：
Wherein, h represents the Y-axis coordinate value of each point on lens surface, and c is the radius of curvature r of lens surface inverse, and k is circular cone
Coefficient, a1、a2、a3、a4、a5For order aspherical coefficients, Z be it is aspherical along optical axis direction at the position that height is h, apart from non-
The distance vector on sphere summit is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359821.5U CN206387955U (en) | 2016-12-12 | 2016-12-12 | A kind of compact high-pixel mobile phone lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621359821.5U CN206387955U (en) | 2016-12-12 | 2016-12-12 | A kind of compact high-pixel mobile phone lens |
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| CN206387955U true CN206387955U (en) | 2017-08-08 |
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ID=59488610
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| CN201621359821.5U Expired - Fee Related CN206387955U (en) | 2016-12-12 | 2016-12-12 | A kind of compact high-pixel mobile phone lens |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557643A (en) * | 2019-01-03 | 2019-04-02 | 江西联益光学有限公司 | Telephoto lens and mobile terminal |
| CN110850552A (en) * | 2019-10-29 | 2020-02-28 | 江西联创电子有限公司 | Optical imaging lens and imaging apparatus |
| TWI724873B (en) * | 2019-10-23 | 2021-04-11 | 神盾股份有限公司 | Optical imaging lens |
| EP4394460A1 (en) * | 2022-12-27 | 2024-07-03 | Largan Precision Co. Ltd. | Optical lens and electronic device |
-
2016
- 2016-12-12 CN CN201621359821.5U patent/CN206387955U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557643A (en) * | 2019-01-03 | 2019-04-02 | 江西联益光学有限公司 | Telephoto lens and mobile terminal |
| US11340428B2 (en) | 2019-01-03 | 2022-05-24 | Jiangxi Lianyi Optics Co, , Ltd. | Telephoto lens and mobile terminal |
| TWI724873B (en) * | 2019-10-23 | 2021-04-11 | 神盾股份有限公司 | Optical imaging lens |
| CN110850552A (en) * | 2019-10-29 | 2020-02-28 | 江西联创电子有限公司 | Optical imaging lens and imaging apparatus |
| CN110850552B (en) * | 2019-10-29 | 2021-06-25 | 江西联创电子有限公司 | Optical imaging lens and imaging apparatus |
| EP4394460A1 (en) * | 2022-12-27 | 2024-07-03 | Largan Precision Co. Ltd. | Optical lens and electronic device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170808 Termination date: 20211212 |