CN107664824B - Camera optical camera lens - Google Patents

Camera optical camera lens Download PDF

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Publication number
CN107664824B
CN107664824B CN201710996598.8A CN201710996598A CN107664824B CN 107664824 B CN107664824 B CN 107664824B CN 201710996598 A CN201710996598 A CN 201710996598A CN 107664824 B CN107664824 B CN 107664824B
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China
Prior art keywords
lens
camera
image
curvature
radius
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CN201710996598.8A
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CN107664824A (en
Inventor
石荣宝
张磊
王燕妹
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201710996598.8A priority Critical patent/CN107664824B/en
Priority claimed from JP2017225674A external-priority patent/JP6373470B1/en
Publication of CN107664824A publication Critical patent/CN107664824A/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045Miniaturised 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/06Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/18Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Abstract

The present invention relates to field of optical lens, disclose a kind of camera optical camera lens, which sequentially includes from object side to image side: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens;And meet following relationship: 1.51≤f1/f≤2.5,1.7≤n6≤2.2, -2≤f3/f4≤2;3≤(R13+R14)/(R13-R14)≤10;1.7≤n7≤2.2.While the camera optical camera lens can obtain high imaging performance, low TTL is obtained.

Description

Camera optical camera lens
Technical field
The present invention relates to field of optical lens, in particular to a kind of to be suitable for the hand-held terminals such as smart phone, digital camera The camera optical camera lens of the photographic devices such as equipment and monitor, PC camera lens.
Background technique
In recent years, with the rise of smart phone, the demand for minimizing phtographic lens is increasingly improved, and general phtographic lens Sensor devices nothing more than being that photosensitive coupled apparatus (Charge Coupled Device, CCD) or Complimentary Metal-Oxide are partly led Two kinds of body device (Complementary Metal-Oxide Semicondctor Sensor, CMOS Sensor), and due to Semiconductor fabrication process technology progresses greatly, so that the Pixel Dimensions of sensor devices reduce, along with electronic product now is with function Good and light and short external form is development trend, and therefore, the miniaturization pick-up lens for having good image quality becomes mesh Preceding mainstream in the market.To obtain preferable image quality, the camera lens that tradition is equipped on mobile phone camera mostly uses three-chip type or four Chip lens arrangement.Also, with the development of technology and users on diversity increases, in the elemental area of sensor devices It constantly reduces, and in the case where requirement continuous improvement of the system to image quality, five chips, six chips, seven chip lens arrangements It occurs gradually in lens design.The wide-angle that there is outstanding optical signature, ultra-thin and chromatic aberation sufficiently to make corrections for urgent need Pick-up lens.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of camera optical camera lens high imaging performance can be being obtained While, meet the requirement of ultrathin and wide angle.
In order to solve the above technical problems, embodiments of the present invention provide a kind of camera optical camera lens, the shooting light Camera lens is learned, sequentially includes from object side to image side: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th Lens and the 7th lens;
The focal length of the camera optical camera lens is f, and the focal length of first lens is f1, and the focal length of the third lens is F3, the focal length of the 4th lens are f4, and the refractive index of the 6th lens is n6, and the refractive index of the 7th lens is n7, The radius of curvature of 7th lens object side is R13, and the radius of curvature of the 7th lens image side surface is R14, is met following Relational expression:
1.51≤f1/f≤2.5,1.7≤n6≤2.2,-2≤f3/f4≤2;
3≤(R13+R14)/(R13-R14)≤10;
1.7≤n7≤2.2。
Embodiment of the present invention in terms of existing technologies, by the configuration mode of said lens, using in focal length, folding Penetrate rate, the optics overall length of camera optical camera lens, have on axis in the data of thickness and radius of curvature particular kind of relationship lens it is common Cooperation, enables camera optical camera lens while obtaining high imaging performance, meets the requirement of ultrathin and wide angle.
Preferably, first lens have a positive refracting power, object side in it is paraxial be convex surface, image side surface is in paraxial Concave surface;
The radius of curvature of the first lens object side is R1, and the radius of curvature of the first lens image side surface is R2, with And with a thickness of d1 on the axis of first lens, and meet following relationship:
-4.18≤(R1+R2)/(R1-R2)≤-1.25;
0.16≤d1≤0.53。
Preferably, second lens have a negative refracting power, object side in it is paraxial be convex surface, image side surface is in paraxial Concave surface;
The focal length of the camera optical camera lens is f, and the focal length of second lens is f2, the second lens object side Radius of curvature is R3, and the radius of curvature of the second lens image side surface is R4, with a thickness of d3 on the axis of second lens, and it is full Sufficient following relationship:
-12.70≤f2/f≤-2.57;
3.84≤(R3+R4)/(R3-R4)≤15.06;
0.12≤d3≤0.39。
Preferably, the third lens have a positive refracting power, object side in it is paraxial be convex surface, image side surface is in paraxial Convex surface;
The focal length of the camera optical camera lens is f, and the focal length of the third lens is f3, the third lens object side Radius of curvature is R5, and the radius of curvature of the third lens image side surface is R6, with a thickness of d5 on the axis of the third lens, and it is full Sufficient following relationship:
0.36≤f3/f≤1.45;
0.11≤(R5+R6)/(R5-R6)≤0.50;
0.30≤d5≤0.99。
Preferably, the 4th lens have a negative refracting power, object side in it is paraxial be concave surface, image side surface is in paraxial Concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 4th lens is f4, the 4th lens object side Radius of curvature is R7, and the radius of curvature of the 4th lens image side surface is R8, with a thickness of d7 on the axis of the 4th lens, and it is full Sufficient following relationship:
-2.69≤f4/f≤-0.80;
-0.90≤(R7+R8)/(R7-R8)≤-0.23;
0.12≤d7≤0.35。
Preferably, the object side of the 5th lens is in paraxial for concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 5th lens is f5, the 5th lens object side Radius of curvature is R9, and the radius of curvature of the 5th lens image side surface is R10, with a thickness of d9 on the axis of the 5th lens, and Meet following relationship:
-3.57≤f5/f≤80.19;
-5413.63≤(R9+R10)/(R9-R10)≤-0.52;
0.20≤d9≤0.62。
Preferably, the 6th lens have a positive refracting power, object side in it is paraxial be convex surface, image side surface is in paraxial Concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 6th lens is f6, the 6th lens object side Radius of curvature is R11, and the radius of curvature of the 6th lens image side surface is R12, with a thickness of d11 on the axis of the 6th lens, And meet following relationship:
0.53≤f6/f≤2.64;
-9.71≤(R11+R12)/(R11-R12)≤-1.08;
0.16≤d11≤0.51。
Preferably, the 7th lens have a negative refracting power, object side in it is paraxial be convex surface, image side surface is in paraxial Concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 7th lens is f7, thickness on the axis of the 7th lens Degree is d13, and meets following relationship:
-1.89≤f7/f≤-0.63;
0.13≤d13≤0.38。
Preferably, the optics overall length TTL of the camera optical camera lens is less than or equal to 4.83 millimeters.
Preferably, the aperture F number of the camera optical camera lens is less than or equal to 1.86.
The beneficial effects of the present invention are: camera optical camera lens according to the present invention has outstanding optical characteristics, ultra-thin, Wide-angle and chromatic aberation sufficiently makes corrections, is particularly suitable for the cell-phone camera mirror being made of photographing elements such as CCD, CMOS of high pixel Head assembly and WEB pick-up lens.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the camera optical camera lens of first embodiment of the invention;
Fig. 2 is the axial aberration schematic diagram of camera optical camera lens shown in Fig. 1;
Fig. 3 is the ratio chromatism, schematic diagram of camera optical camera lens shown in Fig. 1;
Fig. 4 is the curvature of field and distortion schematic diagram of camera optical camera lens shown in Fig. 1;
Fig. 5 is the structural schematic diagram of the camera optical camera lens of second embodiment of the invention;
Fig. 6 is the axial aberration schematic diagram of camera optical camera lens shown in Fig. 5;
Fig. 7 is the ratio chromatism, schematic diagram of camera optical camera lens shown in Fig. 5;
Fig. 8 is the curvature of field and distortion schematic diagram of camera optical camera lens shown in Fig. 5.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to each reality of the invention The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the present invention, Many technical details are proposed in order to make reader more fully understand the present invention.But even if without these technical details and base In the various changes and modifications of following embodiment, claimed technical solution of the invention also may be implemented.
(first embodiment)
With reference to attached drawing, the present invention provides a kind of camera optical camera lenses 10.Fig. 1 show first embodiment of the invention Camera optical camera lens 10, the camera optical camera lens 10 include seven lens.Specifically, the camera optical camera lens 10, by object side Sequentially include: to image side aperture S1, the first lens L1, the second lens L2, the third lens L3, the 4th lens L4, the 5th lens L5, 6th lens L6 and the 7th lens L7.It may be provided with optical filtering piece (filter) GF etc. between 7th lens L7 and image planes Si Optical element.First lens L1 be plastic material, the second lens L2 be plastic material, the third lens L3 be plastic material, the 4th Lens L4 is plastic material, and the 5th lens L5 is plastic material, and the 6th lens L6 is glass material, and the 7th lens L7 is glass material Matter.
Here, the focal length for defining whole camera optical camera lens 10 is f, the focal length of the first lens L1 is f1, described the The focal length of three lens L3 is f3, and the focal length of the 4th lens L4 is f4, and the refractive index of the 6th lens L6 is n6, described the The refractive index of seven lens L7 is n7, and the radius of curvature of the 7th lens L7 object side is R13, the 7th lens L7 image side surface Radius of curvature be R14.The camera optical camera lens 10 meets following relationship:
1.51≤f1/f≤2.5,1.7≤n6≤2.2,-2≤f3/f4≤2;
3≤(R13+R14)/(R13-R14)≤10;
1.7≤n7≤2.2。
1.51≤f1/f≤2.5 are, it is specified that the positive refracting power of the first lens L1.When more than lower limit specified value, although favorably Develop in camera lens to ultrathin, but the positive refracting power of the first lens L1 can be too strong, it is difficult to make corrections aberration the problems such as, while it is unfavorable Develop in camera lens to wide angle.On the contrary, the positive refracting power of the first lens can become weak, and camera lens is difficult to when being more than upper limit specified value Develop to ultrathin.Preferably, meet 1.514≤f1/f≤2.01.
1.7≤n6≤2.2 are more advantageous within this range to ultrathin and develop, it is specified that the refractive index of the 6th lens L6, It is conducive to amendment aberration simultaneously.Preferably, meet 1.72≤n6≤2.02.
- 2≤f3/f4≤2 can have, it is specified that the ratio of the focal length f4 of the focal length f3 and the 4th lens L4 of the third lens L3 Effect reduces the susceptibility of optical imaging lens group, further promotes image quality.Preferably, meet -1.34≤f3/f4≤ 0.702。
3≤(R13+R14)/(R13-R14)≤10 is, it is specified that the shape of the 7th lens L7, when outside range, with to super Thin wide angle development, is difficult the problems such as drawing the aberration at angle outside correction axis.Preferably, meet 3.03≤(R13+R14)/(R13- R14)≤6.53。
1.7≤n7≤2.2 are more advantageous within this range to ultrathin and develop, it is specified that the refractive index of the 7th lens L7, It is conducive to amendment aberration simultaneously.Preferably, meet 1.72≤n7≤1.97.
When the focal length of camera optical camera lens 10 of the present invention, the focal length of each lens, the refractive index of associated lens, shooting light It learns the optics overall length of camera lens, when thickness and radius of curvature meet above-mentioned relation formula on axis, videography optical lens head 10 can be made to have High-performance, and meet the design requirement of low TTL.
In present embodiment, the object side of the first lens L1 is convex surface in paraxial place, and image side surface is concave surface, tool in paraxial place There is positive refracting power;The focal length of whole camera optical camera lens is f, the first lens L1 focal length f1, the curvature of the first lens L1 object side Thickness d 1 meets following relationship on radius R1, the radius of curvature R 2 of the first lens L1 image side surface and the axis of the first lens L1 Formula: -4.18≤(R1+R2)/(R1-R2)≤- 1.25 rationally controls the shape of the first lens, enables the first lens effective Ground corrects system spherical aberration;0.16≤d1≤0.53 is advantageously implemented ultrathin.Preferably, -2.61≤(R1+R2)/(R1-R2) ≤-1.56;0.26≤d1≤0.42.
In present embodiment, the object side of the second lens L2 is convex surface in paraxial place, and image side surface is concave surface, tool in paraxial place There is negative refracting power;The focal length of whole camera optical camera lens 10 is f, the second lens L2 focal length f2, the song of the second lens L2 object side Thickness d 3 meets following relationship on rate radius R3, the radius of curvature R 4 of the second lens L2 image side surface and the axis of the second lens L2 Formula: -12.70≤f2/f≤- 2.57, by controlling the negative power of the second lens L2 in zone of reasonableness, with reasonable and effective Ground balance is by the spherical aberration generated of the first lens L1 with positive light coke and the curvature of field amount of system;3.84≤(R3+R4)/(R3- R4)≤15.06, it is specified that the shape of the second lens L2, when outside range, as camera lens develops to ultra-thin wide angle, it is difficult to mend Positive axis colouring Aberration Problem;0.12≤d3≤0.39 is advantageously implemented ultrathin.Preferably, -7.94≤f2/f≤- 3.21; 6.14≤(R3+R4)/(R3-R4)≤12.05;0.19≤d3≤0.31.
In present embodiment, the object side of the third lens L3 is convex surface in paraxial place, and image side surface is convex surface, tool in paraxial place There is positive refracting power;The focal length of whole camera optical camera lens 10 is f, the third lens L3 focal length f3, the song of the third lens L3 object side Thickness d 5 meets following relationship on rate radius R5, the radius of curvature R 6 of the third lens L3 image side surface and the axis of the third lens L3 Formula: 0.36≤f3/f≤1.45 are conducive to the ability that system obtains the good balance curvature of field, effectively to promote image quality;0.11 ≤ (R5+R6)/(R5-R6)≤0.50, can be effectively controlled the shape of the third lens L3, be conducive to the third lens L3 molding, and keep away Exempt to cause to form the generation of bad and stress because the surface curvature of the third lens L3 is excessive;0.30≤d5≤0.99 is conducive to reality Existing ultrathin.Preferably, 0.57≤f3/f≤1.16;0.17≤(R5+R6)/(R5-R6)≤0.40;0.48≤d5≤0.79.
In present embodiment, the object side of the 4th lens L4 is concave surface in paraxial place, and image side surface is concave surface, tool in paraxial place There is negative refracting power;The focal length of whole camera optical camera lens 10 is f, the 4th lens L4 focal length f4, the song of the 4th lens L4 object side Thickness d 7 meets following relationship on rate radius R7, the radius of curvature R 8 of the 4th lens L4 image side surface and the axis of the 4th lens L4 Formula: -2.69≤f4/f≤- 0.80, by the reasonable distribution of focal power, so that system has preferable image quality and lower Sensibility;- 0.90≤(R7+R8)/(R7-R8)≤- 0.23, it is specified that be the 4th lens L4 shape, when outside range, with The development of ultra-thin wide angle is difficult the problems such as drawing the aberration at angle outside correction axis;0.12≤d7≤0.35 is advantageously implemented ultra-thin Change.Preferably, -1.68≤f4/f≤- 1.00;-0.56≤(R7+R8)/(R7-R8)≤-0.28;0.18≤d7≤0.28.
In present embodiment, the object side of the 5th lens L5 is concave surface in paraxial place;The coke of whole camera optical camera lens 10 Away from for f, the 5th lens L5 focal length f5, the radius of curvature R 9 of the 5th lens L5 object side, the curvature half of the 5th lens L5 image side surface Thickness d 9 meets following relationship: -3.57≤f5/f≤80.19 on the axis of diameter R10 and the 5th lens L5, to the 5th lens The restriction of L5 can effectively make the light angle of pick-up lens gentle, reduce tolerance sensitivities;-5413.63≤(R9+R10)/ (R9-R10)≤- 0.52, it is specified that be the 5th lens L5 shape, when outside condition and range, with ultra-thin wide angle develop, very The problems such as drawing the aberration at angle outside hardly possible correction axis;0.20≤d9≤0.62 is advantageously implemented ultrathin.Preferably, -2.23≤f5/f ≤64.15;-3383.52≤(R9+R10)/(R9-R10)≤-0.65;0.32≤d9≤0.50.
In present embodiment, the object side of the 6th lens L6 is convex surface in paraxial place, and image side surface is concave surface, tool in paraxial place There is positive refracting power;The focal length of whole camera optical camera lens 10 is f, the 6th lens L6 focal length f6, the song of the 6th lens L6 object side Thickness d 11 meets following pass on rate radius R11, the radius of curvature R 12 of the 6th lens L6 image side surface and the axis of the 6th lens L6 It is formula: 0.53≤f6/f≤2.64, by the reasonable distribution of focal power, so that system has preferable image quality and lower Sensibility;- 9.71≤(R11+R12)/(R11-R12)≤- 1.08, it is specified that be the 6th lens L6 shape, in condition and range When outer, as ultra-thin wide angle develops, it is difficult the problems such as drawing the aberration at angle outside correction axis;0.16≤d11≤0.51 is conducive to reality Existing ultrathin.Preferably, 0.85≤f6/f≤2.11;-6.07≤(R11+R12)/(R11-R12)≤-1.35;0.26≤d11 ≤0.41。
In present embodiment, the object side of the 7th lens L7 is convex surface in paraxial place, and image side surface is concave surface, tool in paraxial place There is negative refracting power;The focal length of whole camera optical camera lens 10 is f, on the axis of the 7th lens L7 focal length f7 and the 7th lens L7 Thickness d 13 meets following relationship: -1.89≤f7/f≤- 0.63, by the reasonable distribution of focal power so that system have compared with Good image quality and lower sensibility;0.13≤d13≤0.38 is advantageously implemented ultrathin.Preferably, -1.18≤f7/ f≤-0.78;0.20≤d13≤0.30.
In present embodiment, the optics overall length TTL of camera optical camera lens 10 is less than or equal to 4.83 millimeters, is advantageously implemented Ultrathin.Preferably, the optics overall length TTL of camera optical camera lens 10 is less than or equal to 4.61.
In present embodiment, the aperture F number of camera optical camera lens 10 is less than or equal to 1.86.Large aperture, imaging performance are good. Preferably, the aperture F number of camera optical camera lens 10 is less than or equal to 1.82.
It is designed in this way, the optics overall length TTL of whole camera optical camera lens 10 is enabled to shorten as far as possible, maintain miniaturization Characteristic.
Camera optical camera lens 10 of the invention will be illustrated with example below.The documented following institute of symbol in each example Show.The unit of distance, radius and center thickness is mm.
TTL: optical length (distance on the object side to the axis of imaging surface of the 1st lens L1);
Preferably, it is also provided with the point of inflexion and/or stationary point on the object side of the lens and/or image side surface, with full The imaging demand of sufficient high-quality, specific implementable solution are joined lower described.
Shown below the design data of the camera optical camera lens 10 of first embodiment according to the present invention, focal length, distance, The unit of radius and center thickness is mm.
Table 1, table 2 show the design data of the camera optical camera lens 10 of first embodiment of the invention.
[table 1]
Wherein, the meaning of each symbol is as follows.
S1: aperture;
R: being center radius of curvature when the radius of curvature of optical surface, lens;
The radius of curvature of the object side of R1: the first lens L1;
The radius of curvature of the image side surface of R2: the first lens L1;
The radius of curvature of the object side of R3: the second lens L2;
The radius of curvature of the image side surface of R4: the second lens L2;
The radius of curvature of R5: the third lens L3 object side;
R6: the radius of curvature of the image side surface of the third lens L3;
The radius of curvature of the object side of R7: the four lens L4;
The radius of curvature of the image side surface of R8: the four lens L4;
The radius of curvature of the object side of R9: the five lens L5;
The radius of curvature of the image side surface of R10: the five lens L5;
The radius of curvature of the object side of R11: the six lens L6;
The radius of curvature of the image side surface of R12: the six lens L6;
The radius of curvature of the object side of R13: the seven lens L7;
The radius of curvature of the image side surface of R14: the seven lens L7;
R15: the radius of curvature of the object side of optical filtering piece GF;
R16: the radius of curvature of the image side surface of optical filtering piece GF;
D: distance on the axis on the axis of lens between thickness and lens;
Distance on the axis of the object side of d0: aperture S1 to first lens L1;
Thickness on the axis of d1: the first lens L1;
Distance on the image side surface of d2: the first lens L1 to the axis of the object side of the second lens L2;
Thickness on the axis of d3: the second lens L2;
Distance on the image side surface of d4: the second lens L2 to the axis of the object side of the third lens L3;
D5: thickness on the axis of the third lens L3;
D6: distance on the axis of the image side surface of the third lens L3 to the object side of the 4th lens L4;
Thickness on the axis of d7: the four lens L4;
Distance on the image side surface of d8: the four lens L4 to the axis of the object side of the 5th lens L5;
Thickness on the axis of d9: the five lens L5;
Distance on the image side surface of d10: the five lens L5 to the axis of the object side of the 6th lens L6;
Thickness on the axis of d11: the six lens L6;
Distance on the image side surface of d12: the six lens L6 to the axis of the object side of the 7th lens L7;
Thickness on the axis of d13: the seven lens L7;
Distance on the image side surface of d14: the seven lens L7 to the axis of the object side of optical filtering piece GF;
D15: thickness on the axis of optical filtering piece GF;
D16: distance on the image side surface to the axis of image planes of optical filtering piece GF;
The refractive index of nd:d line;
The refractive index of the d line of nd1: the first lens L1;
The refractive index of the d line of nd2: the second lens L2;
The refractive index of nd3: the third lens L3 d line;
The refractive index of the d line of nd4: the four lens L4;
The refractive index of the d line of nd5: the five lens L5;
The refractive index of the d line of nd6: the six lens L6;
The refractive index of the d line of nd7: the seven lens L7;
Ndg: the refractive index of the d line of optical filtering piece GF;
Vd: Abbe number;
The Abbe number of v1: the first lens L1;
The Abbe number of v2: the second lens L2;
V3: the Abbe number of the third lens L3;
The Abbe number of v4: the four lens L4;
The Abbe number of v5: the five lens L5;
The Abbe number of v6: the six lens L6;
The Abbe number of v7: the seven lens L7;
Vg: the Abbe number of optical filtering piece GF.
Table 2 shows the aspherical surface data of each lens in the camera optical camera lens 10 of embodiment of the present invention 1.
[table 2]
Wherein, k is circular cone coefficient, and A4, A6, A8, A10, A12, A14, A16 are asphericity coefficients.
IH: image height
Y=(x2/R)/[1+ { 1- (k+1) (x2/R2) } 1/2]+A4x4+A6x6+A8x8+A10x10+A12x12+A14x14 +A16x16 (1)
For convenience, each lens face is aspherical using aspherical shown in above-mentioned formula (1).But this hair The bright aspherical polynomial form for being not limited to the formula (1) expression.
Table 3, table 4 show the point of inflexion of each lens and stationary point in the camera optical camera lens 10 of embodiment of the present invention 1 and set It counts.Wherein, R1, R2 respectively represent object side and the image side surface of the first lens L1, and R3, R4 respectively represent the second lens L2's Object side and image side surface, R5, R6 respectively represent object side and the image side surface of the third lens L3, and R7, R8 respectively represent the 4th lens The object side of L4 and image side surface, R9, R10 respectively represent object side and the image side surface of the 5th lens L5, and R11, R12 respectively represent The object side of six lens L6 and image side surface, R13, R14 respectively represent object side and the image side surface of the 7th lens L7." contrary flexure point Set " field corresponding data be each lens surface set by the point of inflexion to 10 optical axis of camera optical camera lens vertical range." stationary point Position " field corresponding data is vertical range of the stationary point set by each lens surface to 10 optical axis of camera optical camera lens.
[table 3]
Point of inflexion number Point of inflexion position 1 Point of inflexion position 2 Point of inflexion position 3 Point of inflexion position 4
R1 0
R2 0 0
R3 1 0.895
R4 3 0.535 0.835 1.015
R5 3 0.475 0.855 1.045
R6 1 1.075
R7 1 0.925
R8 2 0.265 0.865
R9 0
R10 0
R11 1 0.645
R12 1 0.755
R13 4 0.275 1.455 1.875 1.975
R14 1 0.425
[table 4]
Fig. 2, Fig. 3 respectively illustrate shooting light of the light Jing Guo first embodiment that wavelength is 470nm, 555nm and 650nm Axial aberration and ratio chromatism, schematic diagram after learning camera lens 10.Fig. 4 is then shown, and the light that wavelength is 470nm is real by first The curvature of field and distortion schematic diagram after applying the camera optical camera lens 10 of mode, the curvature of field S of Fig. 4 is the curvature of field in sagitta of arc direction, and T is meridian The curvature of field in direction.
The table 9 occurred afterwards show in each example 1,2 in various numerical value and conditional as defined in value corresponding to parameter.
As shown in table 9, first embodiment meets each conditional.
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 1.978mm, and full filed image height is 2.9335mm, the field angle of diagonal are 77.49 °, wide-angle, ultra-thin, and on axis, the outer chromatic aberation of axis sufficiently makes corrections, and have There is outstanding optical signature.
(second embodiment)
Second embodiment is essentially identical with first embodiment, and symbol meaning is identical with first embodiment, below only List difference.
Table 5, table 6 show the design data of the camera optical camera lens 20 of second embodiment of the invention.
[table 5]
Table 6 shows the aspherical surface data of each lens in the camera optical camera lens 20 of second embodiment of the invention.
[table 6]
Table 7, table 8 show the point of inflexion of each lens and stationary point in the camera optical camera lens 20 of embodiment of the present invention 2 and set It counts.
[table 7]
Point of inflexion number Point of inflexion position 1 Point of inflexion position 2 Point of inflexion position 3
R1 0
R2 0
R3 1 0.855
R4 1 0.755
R5 1 1.025
R6 2 0.955 1.005
R7 0
R8 2 0.415 0.825
R9 0
R10 1 0.145
R11 1 0.625
R12 1 0.675
R13 3 0.275 1.335 1.645
R14 1 0.415
[table 8]
Stationary point number Stationary point position 1
R1 0
R2 0
R3 0
R4 1 1.005
R5 0
R6 0
R7 0
R8 0
R9 0
R10 1 0.245
R11 1 0.965
R12 1 0.975
R13 1 0.495
R14 1 0.865
Fig. 6, Fig. 7 respectively illustrate shooting light of the light Jing Guo second embodiment that wavelength is 470nm, 555nm and 650nm Axial aberration and ratio chromatism, schematic diagram after learning camera lens 20.Fig. 8 is then shown, and the light that wavelength is 470nm is real by second The curvature of field and distortion schematic diagram after applying the camera optical camera lens 20 of mode.
As shown in table 9, second embodiment meets each conditional.
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 2.031mm, and full filed image height is 2.9335mm, the field angle of diagonal are 76.00 °, wide-angle, ultra-thin, and on axis, the outer chromatic aberation of axis sufficiently makes corrections, and have There is outstanding optical signature.
[table 9]
Parameter and conditional Embodiment 1 Embodiment 2
f 3.570 3.664
f1 5.435 5.562
f2 -22.662 -14.126
f3 3.450 2.629
f4 -4.800 -4.413
f5 190.840 -6.535
f6 6.289 3.897
f7 -3.370 -3.444
f3/f4 -0.719 -0.596
(R1+R2)/(R1-R2) -1.868 -2.091
(R3+R4)/(R3-R4) 10.038 7.674
(R5+R6)/(R5-R6) 0.335 0.217
(R7+R8)/(R7-R8) -0.340 -0.451
(R9+R10)/(R9-R10) -2706.815 -0.780
(R11+R12)/(R11-R12) -4.855 -1.621
(R13+R14)/(R13-R14) 3.050 3.050
f1/f 1.523 1.518
f2/f -6.348 -3.855
f3/f 0.966 0.717
f4/f -1.345 -1.204
f5/f 53.461 -1.784
f6/f 1.762 1.064
f7/f -0.944 -0.940
d1 0.351 0.330
d3 0.258 0.235
d5 0.658 0.602
d7 0.230 0.230
d9 0.398 0.413
d11 0.320 0.343
d13 0.250 0.253
Fno 1.805 1.804
TTL 4.390 4.390
d1/TTL 0.080 0.075
n1 1.5440 1.5440
n2 1.5440 1.5440
n3 1.5440 1.5440
n4 1.6400 1.6400
n5 1.6400 1.6400
n6 1.7330 1.8470
n7 1.7330 1.7330
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiment party of the invention Formula, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (10)

1. a kind of camera optical camera lens, which is characterized in that the camera optical camera lens sequentially includes: first from object side to image side Lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens;
First lens have positive refracting power, and second lens have negative refracting power, and the third lens have positive flexion Power, the 4th lens have negative refracting power, and the 6th lens have positive refracting power, and the 7th lens have negative flexion Power;
The focal length of the camera optical camera lens is f, and the focal length of first lens is f1, and the focal length of the third lens is f3, The focal length of 4th lens is f4, and the refractive index of the 6th lens is n6, and the refractive index of the 7th lens is n7, described The radius of curvature of 7th lens object side is R13, and the radius of curvature of the 7th lens image side surface is R14, meets following relationship Formula:
1.51≤f1/f≤2.5,1.7≤n6≤2.2,-2≤f3/f4≤2;
3≤(R13+R14)/(R13-R14)≤10;
1.7≤n7≤2.2。
2. camera optical camera lens according to claim 1, which is characterized in that the object side of first lens is in paraxial Convex surface, image side surface is in paraxial for concave surface;
The radius of curvature of the first lens object side is R1, and the radius of curvature of the first lens image side surface is R2, Yi Jisuo It states on the axis of the first lens with a thickness of d1, and meets following relationship:
-4.18≤(R1+R2)/(R1-R2)≤-1.25;
0.16≤d1≤0.53。
3. camera optical camera lens according to claim 1, which is characterized in that the object side of second lens is in paraxial Convex surface, image side surface is in paraxial for concave surface;
The focal length of the camera optical camera lens is f, and the focal length of second lens is f2, the curvature of the second lens object side Radius is R3, and the radius of curvature of the second lens image side surface is R4, with a thickness of d3 on the axis of second lens, and under meeting Column relational expression:
-12.70≤f2/f≤-2.57;
3.84≤(R3+R4)/(R3-R4)≤15.06;
0.12≤d3≤0.39。
4. camera optical camera lens according to claim 1, which is characterized in that the object side of the third lens is in paraxial Convex surface, image side surface is in paraxial for convex surface;
The focal length of the camera optical camera lens is f, and the focal length of the third lens is f3, the curvature of the third lens object side Radius is R5, and the radius of curvature of the third lens image side surface is R6, with a thickness of d5 on the axis of the third lens, and under meeting Column relational expression:
0.36≤f3/f≤1.45;
0.11≤(R5+R6)/(R5-R6)≤0.50;
0.30≤d5≤0.99。
5. camera optical camera lens according to claim 1, which is characterized in that the object side of the 4th lens is in paraxial Concave surface, image side surface is in paraxial for concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 4th lens is f4, the curvature of the 4th lens object side Radius is R7, and the radius of curvature of the 4th lens image side surface is R8, with a thickness of d7 on the axis of the 4th lens, and under meeting Column relational expression:
-2.69≤f4/f≤-0.80;
-0.90≤(R7+R8)/(R7-R8)≤-0.23;
0.12≤d7≤0.35。
6. camera optical camera lens according to claim 1, which is characterized in that the object side of the 5th lens is in paraxial Concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 5th lens is f5, the curvature of the 5th lens object side Radius is R9, and the radius of curvature of the 5th lens image side surface is R10, with a thickness of d9 on the axis of the 5th lens, and is met Following relationship:
-3.57≤f5/f≤80.19;
-5413.63≤(R9+R10)/(R9-R10)≤-0.52;
0.20≤d9≤0.62。
7. camera optical camera lens according to claim 1, which is characterized in that the object side of the 6th lens is in paraxial Convex surface, image side surface is in paraxial for concave surface;
The focal length of the camera optical camera lens is f, and the focal length of the 6th lens is f6, the curvature of the 6th lens object side Radius is R11, and the radius of curvature of the 6th lens image side surface is R12, with a thickness of d11 on the axis of the 6th lens, and it is full Sufficient following relationship:
0.53≤f6/f≤2.64;
-9.71≤(R11+R12)/(R11-R12)≤-1.08;
0.16≤d11≤0.51。
8. camera optical camera lens according to claim 1, which is characterized in that the object side of the 7th lens is in paraxial Convex surface, image side surface is in paraxial for concave surface;
The focal length of the camera optical camera lens is f, and the focal lengths of the 7th lens is f7, on the axis of the 7th lens with a thickness of D13, and meet following relationship:
-1.89≤f7/f≤-0.63;
0.13≤d13≤0.38。
9. camera optical camera lens according to claim 1, which is characterized in that the optics overall length of the camera optical camera lens TTL is less than or equal to 4.83 millimeters.
10. camera optical camera lens according to claim 1, which is characterized in that the aperture F number of the camera optical camera lens is small In or equal to 1.86.
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