CN107907971A - Camera optical camera lens - Google Patents
Camera optical camera lens Download PDFInfo
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- CN107907971A CN107907971A CN201710975212.5A CN201710975212A CN107907971A CN 107907971 A CN107907971 A CN 107907971A CN 201710975212 A CN201710975212 A CN 201710975212A CN 107907971 A CN107907971 A CN 107907971A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—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
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Abstract
The present invention relates to field of optical lens, discloses a kind of camera optical camera lens, which sequentially includes from thing side to image side：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, and the 7th lens；And meet following relationship：‑3≤f1/f≤‑1,1.7≤n2≤2.2,1≤f6/f7≤10；2≤(R1+R2)/(R1‑R2)≤10；1.7≤n7≤2.2.While the camera optical camera lens can obtain high imaging performance, low TTL is obtained.
Description
Technical field
It is more particularly to a kind of to be suitable for the hand-held terminals such as smart mobile phone, digital camera the present invention relates to field of optical lens
Equipment, and the camera optical camera lens of the camera device such as monitor, PC camera lenses.
Background technology
In recent years, with the rise of smart mobile phone, the demand for minimizing phtographic lens increasingly improves, 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-OxideSemicondctor Sensor, CMOS Sensor), and due to half
Conductor manufacturing process technology progresses greatly so that the Pixel Dimensions of sensor devices reduce, along with electronic product is good with function now
And light and short external form is development trend, therefore, the miniaturization pick-up lens for possessing good image quality becomes at present
The mainstream of in the market.To obtain preferable image quality, the camera lens that tradition is equipped on mobile phone camera uses three-chip type or four more
Formula lens arrangement.Also, with the development of technology and increasing for users on diversity, sensor devices elemental area not
It is disconnected to reduce, and in the case that requirement of the system to image quality is continuously improved, five chips, six chips, seven chip lens arrangements by
Gradually appear among lens design.The wide-angle that there is outstanding optical signature, ultra-thin and chromatic aberation fully to make corrections for active demand is taken the photograph
As camera lens.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of camera optical camera lens, high imaging performance can 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, is sequentially included from thing side to image side：First lens, the second lens, the 3rd 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, the first lens thing side
Radius of curvature is R1, and the radius of curvature of the first lens image side surface is R2, and the refractive index of second lens is n2, described
The refractive index of seven lens is n7, and the focal length of the 6th lens is f6, and the focal length of the 7th lens is f7, meets following relationship
Formula：
-3≤f1/f≤-1,1.7≤n2≤2.2,1≤f6/f7≤10；
2≤(R1+R2)/(R1-R2)≤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 in the data of thickness and radius of curvature on axis particular kind of relationship lens it is common
Coordinate, camera optical camera lens is met the requirement of ultrathin and wide angle while high imaging performance is obtained.
Preferably, first lens have a negative refracting power, its thing side in it is paraxial be convex surface, its image side surface is in paraxial
Concave surface；Thickness is d1 on the axis of first lens, and meets following relationship：0.10≤d1≤0.36.
Preferably, second lens have a positive refracting power, its thing side in it is paraxial be convex surface, its 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 song of the second lens thing side
Rate radius is R3, and the radius of curvature of the second lens image side surface is R4, and thickness is d3 on the axis of second lens, and is met
Following relationship：0.33≤f2/f≤1.20；-4.06≤(R3+R4)/(R3-R4)≤0.78；0.25≤d3≤0.90.
Preferably, the 3rd lens have a positive refracting power, its image side surface in it is paraxial be convex surface；The camera optical camera lens
Focal length be f, the focal length of the 3rd lens is f3, and the radius of curvature of the 3rd lens thing side is R5, and the described 3rd is saturating
The radius of curvature of mirror image side is R6, and thickness is d5 on the axis of the 3rd lens, and meets following relationship：1.31≤f3/f
≤5.92；-1.09≤(R5+R6)/(R5-R6)≤2.19；0.17≤d5≤1.01.
Preferably, the 4th lens have negative refracting power；The focal length of the camera optical camera lens is f, and the described 4th is saturating
The focal length of mirror is f4, and the radius of curvature of the 4th lens thing side is R7, and the radius of curvature of the 4th lens image side surface is
R8, thickness is d7 on the axis of the 4th lens, and meets following relationship：-7.31≤f4/f≤-1.29；-5.49≤(R7+
R8)/(R7-R8)≤5.59；0.11≤d7≤0.42.
Preferably, the 5th lens have positive refracting power, its thing side in it is paraxial be concave surface, its 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 5th lens is f5, the song of the 5th lens thing side
Rate radius is R9, and the radius of curvature of the 5th lens image side surface is R10, and thickness is d9 on the axis of the 5th lens, and full
Sufficient following relationship：0.25≤f5/f≤0.89；0.84≤(R9+R10)/(R9-R10)≤2.74；0.30≤d9≤1.80.
Preferably, the 6th lens have a negative refracting power, its image side surface in it is paraxial be concave surface；The camera optical camera lens
Focal length be f, the focal length of the 6th lens is f6, and the radius of curvature of the 6th lens thing side is R11, and the described 6th is saturating
The radius of curvature of mirror image side is R12, and thickness is d11 on the axis of the 6th lens, and meets following relationship：-8.56≤
f6/f≤-1.00；0.31≤(R11+R12)/(R11-R12)≤1.93；0.14≤d11≤0.64.
Preferably, the 7th lens have a negative refracting power, its thing side in it is paraxial be convex surface, its 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, the song of the 7th lens thing side
Rate radius is R13, and the radius of curvature of the 7th lens image side surface is R14, and thickness is d13 on the axis of the 7th lens, and
Meet following relationship：1.04≤(R13+R14)/(R13-R14)≤4.13；-1.43≤f7/f≤-0.38；0.12≤d13≤
0.53。
Preferably, the optics overall length TTL of the camera optical camera lens is less than or equal to 6.20 millimeters.
Preferably, the aperture F numbers of the camera optical camera lens are less than or equal to 2.21.
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 fully 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.
Brief description of the drawings
Fig. 1 is the structure 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 structure 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；
Fig. 9 is the structure diagram of the camera optical camera lens of third embodiment of the invention；
Figure 10 is the axial aberration schematic diagram of camera optical camera lens shown in Fig. 9；
Figure 11 is the ratio chromatism, schematic diagram of camera optical camera lens shown in Fig. 9；
Figure 12 is the curvature of field and distortion schematic diagram of camera optical camera lens shown in Fig. 9.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, each reality below in conjunction with attached drawing to the present 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 ins and outs are proposed in order to make reader more fully understand the present invention.But even if without these ins and outs and base
Many variations and modification in following embodiment, can also realize claimed technical solution of the invention.
(first embodiment)
Refer to the attached drawing, the present invention provides a kind of camera optical camera lens 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 thing side
Sequentially include to image side：Aperture S1, the first lens L1, the second lens L2, the 3rd 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 is plastic material, and the second lens L2 is glass material, and the 3rd lens L3 is plastic material, the 4th
Lens L4 is plastic material, and the 5th lens L5 is plastic material, and the 6th lens L6 is plastic material, and the 7th lens L7 is glass material
Matter.
Here, the focal length of the overall camera optical camera lens 10 of definition is f, the focal lengths of first lens is f1, described first
The radius of curvature of lens thing side is R1, and the radius of curvature of the first lens image side surface is R2, the refraction of second lens
Rate is n2, and the refractive index of the 7th lens is n7, and the focal length of the 6th lens is f6, and the focal length of the 7th lens is
f7.The camera optical camera lens 10 meets following relationship：-3≤f1/f≤-1,1.7≤n2≤2.2,1≤f6/f7≤10；2
≤(R1+R2)/(R1-R2)≤10；1.7≤n7≤2.2.
- 3≤f1/f≤- 1 is, it is specified that the first lens L1's helps refracting power.During more than upper limit setting, although being conducive to mirror
Head develops to ultrathin, but the negative refracting power of the first lens L1 can be too strong, it is difficult to make corrections aberration the problems such as, while be unfavorable for mirror
Head develops to wide angle.On the contrary, when exceeding lower limit setting, the negative refracting power of the first lens can become weak, and camera lens is difficult to super
Thinning develops.Preferably, -2.95≤f1/f≤- 1.30 are met.
1.7≤n2≤2.2 are more advantageous to developing to ultrathin within this range, it is specified that the refractive index of the second lens L2,
At the same time beneficial to amendment aberration.Preferably, 1.73≤n4≤1.85 are met.
1≤f6/f7≤10 can have, it is specified that the ratio of the focal length f7 of the focal length f6 and the 7th lens L7 of the 6th lens L6
Effect reduces the susceptibility of optical imaging lens group, further lifts image quality.Preferably, meet 2.14≤f6/f7≤
6.00。
2≤(R1+R2)/(R1-R2)≤10 are, it is specified that the shape of the first lens L1, when outside scope, with to ultra-thin wide
Angling develops, it is difficult to the problems such as drawing the aberration at angle outside the axis that makes corrections.Preferably, 3.17≤(R1+R2)/(R1-R2)≤8.70 are met.
1.7≤n7≤2.2 are advantageously implemented ultrathin, it is specified that the refractive index of the 7th lens L7.Preferably, meet
1.71≤n7≤1.85。
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
Learn the optics overall length of camera lens, when thickness and radius of curvature meet above-mentioned relation formula on axis, can have videography optical lens first 10
High-performance, and meet the design requirement of low TTL.
In present embodiment, the thing side of the first lens L1 is convex surface in paraxial place, and image side surface is concave surface in paraxial place, tool
There is negative refracting power；The focal length of overall camera optical camera lens is f, the first lens L1 focal lengths f1, thickness d 1 on the axis of the first lens L1
Meet following relationship：0.10≤d1≤0.36, is advantageously implemented ultrathin.Preferably, 0.16≤d1≤0.29.
In present embodiment, the thing side of the second lens L2 is convex surface in paraxial place, and image side surface is concave surface in paraxial place, tool
There is positive refracting power；The focal length of overall camera optical camera lens 10 is f, the second lens L2 focal lengths f2, the song of the second lens L2 things side
Rate radius R3, the radius of curvature R 4 of the second lens L2 image side surfaces, and thickness d 3 meets following relationship on the axis of the second lens L2
Formula：0.33≤f2/f≤1.20, by by the control of the positive light coke of the second lens L2 in zone of reasonableness, with reasonable and effective Horizon
Weighing apparatus is by the spherical aberrations produced of the first lens L1 with negative power and the curvature of field amount of system；-4.06≤(R3+R4)/(R3-R4)
≤ 0.78, it is specified that the shape of the second lens L2, when outside scope, as camera lens develops to ultra-thin wide angle, it is difficult to which make corrections axis
Colouring Aberration Problem；0.25≤d3≤0.90, is advantageously implemented ultrathin.Preferably, 0.52≤f2/f≤0.96；-2.54≤
(R3+R4)/(R3-R4)≤-0.97；0.40≤d3≤0.72.
In present embodiment, the image side surface of the 3rd lens L3 is convex surface in paraxial place, has positive refracting power；Overall shooting light
The focal length for learning camera lens 10 is f, the 3rd lens L3 focal length f3, the radius of curvature R 5 of the 3rd lens L3 things side, the 3rd lens L3 pictures
The radius of curvature R 6 of side, and thickness d 5 meets following relationship on the axis of the 3rd lens L3：1.31≤f3/f≤5.92, have
The ability of the good balance curvature of field is obtained beneficial to system, effectively to lift image quality；-1.09≤(R5+R6)/(R5-R6)≤
2.19, the shape of the 3rd lens L3 can be effectively controlled, is conducive to the 3rd lens L3 shapings, and avoid because of the surface of the 3rd lens L3
Curvature is excessive and causes to be molded the generation of bad and stress；0.17≤d5≤1.01, are advantageously implemented ultrathin.Preferably, 2.10
≤f3/f≤4.74；-0.68≤(R5+R6)/(R5-R6)≤1.75；0.26≤d5≤0.80.
In present embodiment, the 4th lens L4 has negative refracting power；The focal length of overall camera optical camera lens 10 is f, the 4th
Lens L4 focal lengths f4, the radius of curvature R 7 of the 4th lens L4 things side, the radius of curvature R 8, Yi Ji of the 4th lens L4 image side surfaces
Thickness d 7 meets following relationship on the axis of four lens L4：- 7.31≤f4/f≤- 1.29, by the reasonable distribution of focal power, make
The system of obtaining has preferable image quality and relatively low sensitiveness；- 5.49≤(R7+R8)/(R7-R8)≤5.59, it is specified that be
The shape of 4th lens L4, when outside scope, with the development of ultra-thin wide angle, is asked it is difficult to draw the aberration at angle etc. outside the axis that makes corrections
Topic；0.11≤d7≤0.42, is advantageously implemented ultrathin.Preferably, -4.57≤f4/f≤- 1.61；-3.43≤(R7+R8)/
(R7-R8)≤4.47；0.17≤d7≤0.34.
In present embodiment, the thing side of the 5th lens L5 is concave surface in paraxial place, and image side surface is convex surface in paraxial place, tool
There is positive refracting power；The focal length of overall camera optical camera lens 10 is f, the 5th lens L5 focal length f5, the song of the 5th lens L5 things side
Rate radius R9, the radius of curvature R 10 of the 5th lens L5 image side surfaces, and thickness d 9 meets following relationship on the axis of the 5th lens L5
Formula：0.25≤f5/f≤0.89, can effectively make it that the light angle of pick-up lens is gentle to limiting for the 5th lens L5, reduce
Tolerance sensitivities；0.84≤(R9+R10)/(R9-R10)≤2.74, it is specified that be the 5th lens L5 shape, in condition and range
When outer, as ultra-thin wide angle develops, it is difficult to the problems such as drawing the aberration at angle outside the axis that makes corrections；0.30≤d9≤1.80, are conducive to reality
Existing ultrathin.Preferably, 0.41≤f5/f≤0.71；1.34≤(R9+R10)/(R9-R10)≤2.19；0.48≤d9≤
1.44。
In present embodiment, the image side surface of the 6th lens L6 is concave surface in paraxial place, has negative refracting power；Overall shooting light
The focal length for learning camera lens 10 is f, the 6th lens L6 focal length f6, the radius of curvature R 11 of the 6th lens L6 things side, the 6th lens L6 pictures
The radius of curvature R 12 of side, and thickness d 11 meets following relationship on the axis of the 6th lens L6：-8.56≤f6/f≤-
1.00, pass through the reasonable distribution of focal power so that system has preferable image quality and relatively low sensitiveness；0.31≤(R11
+ R12)/(R11-R12)≤1.93, it is specified that be the 6th lens L6 shape, when outside condition and range, with ultra-thin wide angle
Development, it is difficult to the problems such as drawing the aberration at angle outside the axis that makes corrections；0.14≤d11≤0.64, is advantageously implemented ultrathin.Preferably ,-
5.35≤f6/f≤-1.25；0.49≤(R11+R12)/(R11-R12)≤1.54；0.23≤d11≤0.51.
In present embodiment, the thing side of the 7th lens L7 is convex surface in paraxial place, and image side surface is concave surface in paraxial place, tool
There is negative refracting power；The focal length of overall camera optical camera lens 10 is f, and the radius of curvature of the 7th lens L7 things side is R13, institute
The radius of curvature for stating the 7th lens image side surface is R14, the 7th lens L7 focal length f7, and thickness d 13 on the axis of the 7th lens L7
Meet following relationship：1.04≤(R13+R14)/(R13-R14)≤4.13, it is specified that be the 7th lens L7 shape, in bar
When outside part scope, as ultra-thin wide angle develops, it is difficult to the problems such as drawing the aberration at angle outside the axis that makes corrections；-1.43≤f7/f≤-
0.38, pass through the reasonable distribution of focal power so that system has preferable image quality and relatively low sensitiveness；0.12≤d13
≤ 0.53, it is advantageously implemented ultrathin.Preferably, -0.89≤f7/f≤- 0.48；0.18≤d13≤0.42.
In present embodiment, the optics overall length TTL of camera optical camera lens 10 is less than or equal to 6.20 millimeters, is advantageously implemented
Ultrathin.Preferably, the optics overall length TTL of camera optical camera lens 10 is less than or equal to 5.92.
In present embodiment, the aperture F numbers of camera optical camera lens 10 are less than or equal to 2.21.Large aperture, imaging performance are good.
Preferably, the aperture F numbers of camera optical camera lens 10 are less than or equal to 2.17.
It is so designed that, enables to the optics overall length TTL of overall camera optical camera lens 10 to shorten as far as possible, maintain miniaturization
Characteristic.
The camera optical camera lens 10 of the present invention will be illustrated with example below.The described following institute of symbol in each example
Show.The unit of distance, radius and center thickness is mm.
TTL:Optical length (distance on the thing side of the 1st lens L1 to the axis of imaging surface)；
Preferably, the point of inflexion and/or stationary point are also provided with the thing side of the lens and/or image side surface, with full
The imaging demand of sufficient high-quality, specifically can embodiment, join lower described.
Shown below according to first embodiment of the invention camera optical camera lens 10 design data, 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 implication of each symbol is as follows.
S1:Aperture；
R:Radius of curvature centered on when the radius of curvature of optical surface, lens；
R1:The radius of curvature of the thing side of first lens L1；
R2:The radius of curvature of the image side surface of first lens L1；
R3:The radius of curvature of the thing side of second lens L2；
R4:The radius of curvature of the image side surface of second lens L2；
R5:The radius of curvature of the thing side of 3rd lens L3；
R6:The radius of curvature of the image side surface of 3rd lens L3；
R7:The radius of curvature of the thing side of 4th lens L4；
R8:The radius of curvature of the image side surface of 4th lens L4；
R9:The radius of curvature of the thing side of 5th lens L5；
R10:The radius of curvature of the image side surface of 5th lens L5；
R11:The radius of curvature of the thing side of 6th lens L6；
R12:The radius of curvature of the image side surface of 6th lens L6；
R13:The radius of curvature of the thing side of 7th lens L7；
R14:The radius of curvature of the image side surface of 7th lens L7；
R15:The radius of curvature of the thing side of optical filtering piece GF；
R16:The radius of curvature of the image side surface of optical filtering piece GF；
d:Distance on axis on the axis of lens between thickness and lens；
d0：Aperture S1 is to distance on the axis of the thing side of the first lens L1；
d1：Thickness on the axis of first lens L1；
d2：The image side surface of first lens L1 is to distance on the axis of the thing side of the second lens L2；
d3：Thickness on the axis of second lens L2；
d4：The image side surface of second lens L2 is to distance on the axis of the thing side of the 3rd lens L3；
d5：Thickness on the axis of 3rd lens L3；
d6：The image side surface of 3rd lens L3 is to distance on the axis of the thing side of the 4th lens L4；
d7：Thickness on the axis of 4th lens L4；
d8：The image side surface of 4th lens L4 is to distance on the axis of the thing side of the 5th lens L5；
d9：Thickness on the axis of 5th lens L5；
d10：The image side surface of 5th lens L5 is to distance on the axis of the thing side of the 6th lens L6；
d11：Thickness on the axis of 6th lens L6；
d12：The image side surface of 6th lens L6 is to distance on the axis of the thing side of the 7th lens L7；
d13：Thickness on the axis of 7th lens L7；
d14：The image side surface of 7th lens L7 is to distance on the axis of the thing side of optical filtering piece GF；
d15：Thickness on the axis of optical filtering piece GF；
d16：The image side surface of optical filtering piece GF is to distance on the axis of image planes；
nd:The refractive index of d lines；
nd1:The refractive index of the d lines of first lens L1；
nd2:The refractive index of the d lines of second lens L2；
nd3:The refractive index of the d lines of 3rd lens L3；
nd4:The refractive index of the d lines of 4th lens L4；
nd5:The refractive index of the d lines of 5th lens L5；
nd6：The refractive index of the d lines of 6th lens L6；
nd7：The refractive index of the d lines of 7th lens L7；
ndg:The refractive index of the d lines of optical filtering piece GF；
vd:Abbe number；
v1：The Abbe number of first lens L1；
v2：The Abbe number of second lens L2；
v3：The Abbe number of 3rd lens L3；
v4：The Abbe number of 4th lens L4；
v5：The Abbe number of 5th lens L5；
v6：The Abbe number of 6th lens L6；
v7：The Abbe number of 7th 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 that the point of inflexion of each lens and stationary point are set in the camera optical camera lens 10 of embodiment of the present invention 1
Count.Wherein, R1, R2 represent thing side and the image side surface of the first lens L1 respectively, and R3, R4 represent the second lens L2's respectively
Thing side and image side surface, R5, R6 represent thing side and the image side surface of the 3rd lens L3 respectively, and R7, R8 represent the 4th lens respectively
The thing side of L4 and image side surface, R9, R10 represent thing side and the image side surface of the 5th lens L5 respectively, and R11, R12 represent respectively
The thing side of six lens L6 and image side surface, R13, R14 represent thing side and the image side surface of the 7th lens L7 respectively." point of inflexion position
Put " field corresponding data for the point of inflexion set by each lens surface to 10 optical axis of camera optical camera lens vertical range." stationary point
Vertical range of stationary point of position " the field corresponding data 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 | 1 | 0.535 | |||
| R2 | 0 | ||||
| R3 | 1 | 0.865 | |||
| R4 | 1 | 0.575 | |||
| R5 | 0 | ||||
| R6 | 1 | 0.865 | |||
| R7 | 1 | 0.305 | |||
| R8 | 2 | 0.425 | 1.255 | ||
| R9 | 1 | 0.995 | |||
| R10 | 1 | 0.895 | |||
| R11 | 2 | 0.265 | 1.785 | ||
| R12 | 1 | 0.655 | |||
| R13 | 1 | 0.745 | |||
| R14 | 1 | 0.685 |
【Table 4】
Fig. 2, Fig. 3 respectively illustrate shooting light of light of the wavelength for 470nm, 555nm, 650nm Jing Guo first embodiment
Learn axial aberration and ratio chromatism, schematic diagram after camera lens 10.Fig. 4 then shows that the light that wavelength is 555nm is real by first
The curvature of field after the camera optical camera lens 10 of mode and distortion schematic diagram are applied, 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 13 occurred afterwards is shown in each example 1,2,3 in various numerical value and conditional corresponding to defined parameter
Value.
As shown in table 13, first embodiment meets each conditional.
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 1.808mm, and full filed image height is
2.994mm, the field angle of diagonal are 74.77 °, wide-angle, ultra-thin, and on its axis, the outer chromatic aberation of axis fully makes corrections, and have
Outstanding optical signature.
(second embodiment)
Second embodiment is essentially identical with first embodiment, and symbol implication 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 that the point of inflexion of each lens and stationary point are set in the camera optical camera lens 20 of embodiment of the present invention 2
Count.
【Table 7】
【Table 8】
Fig. 6, Fig. 7 respectively illustrate shooting light of light of the wavelength for 470nm, 555nm, 650nm Jing Guo second embodiment
Learn axial aberration and ratio chromatism, schematic diagram after camera lens 20.Fig. 8 then shows that the light that wavelength is 555nm is real by second
Apply the curvature of field after the camera optical camera lens 20 of mode and distortion schematic diagram.
As shown in table 13, second embodiment meets each conditional.
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 1.813mm, and full filed image height is
2.994mm, the field angle of diagonal are 74.78 °, wide-angle, ultra-thin, and on its axis, the outer chromatic aberation of axis fully makes corrections, and have
Outstanding optical signature.
(the 3rd embodiment)
3rd embodiment and first embodiment are essentially identical, and symbol implication is identical with first embodiment, below only
List difference.
Table 9, table 10 show the design data of the camera optical camera lens 30 of third embodiment of the invention.
【Table 9】
Table 10 shows the aspherical surface data of each lens in the camera optical camera lens 30 of third embodiment of the invention.
【Table 10】
Table 11, table 12 show the point of inflexion of each lens and stationary point in the camera optical camera lens 30 of embodiment of the present invention 3
Design data.
【Table 11】
| 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 | 1 | 0.815 | |||
| R2 | 1 | 0.775 | |||
| R3 | 0 | ||||
| R4 | 1 | 0.895 | |||
| R5 | 2 | 0.665 | 0.795 | ||
| R6 | 2 | 0.685 | 0.895 | ||
| R7 | 1 | 0.985 | |||
| R8 | 1 | 0.945 | |||
| R9 | 1 | 0.925 | |||
| R10 | 0 | ||||
| R11 | 0 | ||||
| R12 | 1 | 0.915 | |||
| R13 | 2 | 0.745 | 2.215 | ||
| R14 | 1 | 0.745 |
【Table 12】
Figure 10, Figure 11 respectively illustrate shooting of light of the wavelength for 470nm, 555nm, 650nm Jing Guo the 3rd embodiment
Axial aberration and ratio chromatism, schematic diagram after optical lens 30.Figure 12 then shows that the light that wavelength is 555nm passes through the 3rd
The curvature of field and distortion schematic diagram after the camera optical camera lens 30 of embodiment.
Table 13 below lists the numerical value that each conditional is corresponded in present embodiment according to above-mentioned condition formula.Obviously, this reality
The imaging optical system for applying mode meets above-mentioned conditional.
In the present embodiment, the Entry pupil diameters of the camera optical camera lens are 1.809mm, and full filed image height is
2.994mm, the field angle of diagonal are 74.83 °, wide-angle, ultra-thin, and on its axis, the outer chromatic aberation of axis fully makes corrections, and have
Outstanding optical signature.
【Table 13】
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment party of the present 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 model of the present invention
Enclose.
Claims (10)
1. a kind of camera optical camera lens, it is characterised in that the camera optical camera lens, sequentially includes from thing side to image side：First
Lens, the second lens, the 3rd 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, the curvature of the first lens thing side
Radius is R1, and the radius of curvature of the first lens image side surface is R2, and the refractive index of second lens is n2, and the described 7th is saturating
The refractive index of mirror is n7, and the focal length of the 6th lens is f6, and the focal length of the 7th lens is f7, meets following relationship：
-3≤f1/f≤-1,1.7≤n2≤2.2,1≤f6/f7≤10；
2≤(R1+R2)/(R1-R2)≤10；
1.7≤n7≤2.2。
2. camera optical camera lens according to claim 1, it is characterised in that first lens have negative refracting power, its
Thing side in it is paraxial be convex surface, its image side surface in it is paraxial be concave surface；
Thickness is d1 on the axis of first lens, and meets following relationship：
0.10≤d1≤0.36。
3. camera optical camera lens according to claim 1, it is characterised in that second lens have positive refracting power, its
Thing side in it is paraxial be convex surface, its image side surface in it is paraxial be 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 thing side
Radius is R3, and the radius of curvature of the second lens image side surface is R4, and thickness is d3 on the axis of second lens, and under meeting
Row relational expression：
0.33≤f2/f≤1.20；
-4.06≤(R3+R4)/(R3-R4)≤0.78；
0.25≤d3≤0.90。
4. camera optical camera lens according to claim 1, it is characterised in that the 3rd lens have positive refracting power, its
Image side surface in it is paraxial be convex surface；
The focal length of the camera optical camera lens is f, and the focal length of the 3rd lens is f3, the curvature of the 3rd lens thing side
Radius is R5, and the radius of curvature of the 3rd lens image side surface is R6, and thickness is d5 on the axis of the 3rd lens, and under satisfaction
Row relational expression：
1.31≤f3/f≤5.92；
-1.09≤(R5+R6)/(R5-R6)≤2.19；
0.17≤d5≤1.01。
5. camera optical camera lens according to claim 1, it is characterised in that the 4th lens have negative refracting power；
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 thing side
Radius is R7, and the radius of curvature of the 4th lens image side surface is R8, and thickness is d7 on the axis of the 4th lens, and under satisfaction
Row relational expression：
-7.31≤f4/f≤-1.29；
-5.49≤(R7+R8)/(R7-R8)≤5.59；
0.11≤d7≤0.42。
6. camera optical camera lens according to claim 1, it is characterised in that the 5th lens have positive refracting power, its
Thing side in it is paraxial be concave surface, its image side surface in it is paraxial be convex 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 thing side
Radius is R9, and the radius of curvature of the 5th lens image side surface is R10, and thickness is d9 on the axis of the 5th lens, and is met
Following relationship：
0.25≤f5/f≤0.89；
0.84≤(R9+R10)/(R9-R10)≤2.74；
0.30≤d9≤1.80。
7. camera optical camera lens according to claim 1, it is characterised in that the 6th lens have negative refracting power, its
Image side surface in it is paraxial be 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 thing side
Radius is R11, and the radius of curvature of the 6th lens image side surface is R12, and thickness is d11 on the axis of the 6th lens, and full
Sufficient following relationship：
-8.56≤f6/f≤-1.00；
0.31≤(R11+R12)/(R11-R12)≤1.93；
0.14≤d11≤0.64。
8. camera optical camera lens according to claim 1, it is characterised in that the 7th lens have negative refracting power, its
Thing side in it is paraxial be convex surface, its image side surface in it is paraxial be concave surface；
The focal length of the camera optical camera lens is f, and the focal length of the 7th lens is f7, the curvature of the 7th lens thing side
Radius is R13, and the radius of curvature of the 7th lens image side surface is R14, and thickness is d13 on the axis of the 7th lens, and full
Sufficient following relationship：
1.04≤(R13+R14)/(R13-R14)≤4.13；
-1.43≤f7/f≤-0.38；
0.12≤d13≤0.53。
9. camera optical camera lens according to claim 1, it is characterised in that the optics overall length of the camera optical camera lens
TTL is less than or equal to 6.20 millimeters.
10. camera optical camera lens according to claim 1, it is characterised in that the aperture F numbers of the camera optical camera lens are small
In or equal to 2.21.
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| CN201710975212.5A CN107907971B (en) | 2017-10-19 | 2017-10-19 | Image pickup optical lens |
| JP2017229964A JP6377236B1 (en) | 2017-10-19 | 2017-11-30 | Imaging optical lens |
| US15/842,116 US10437019B2 (en) | 2017-10-19 | 2017-12-14 | Camera optical lens |
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| CN201710975212.5A CN107907971B (en) | 2017-10-19 | 2017-10-19 | Image pickup optical lens |
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| US10678025B2 (en) | 2017-12-25 | 2020-06-09 | Largan Precision Co., Ltd. | Photographing lens assembly, imaging apparatus and electronic device |
| WO2021128190A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
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| JP2003140042A (en) * | 2001-11-02 | 2003-05-14 | West Electric Co Ltd | Zoom lens |
| JP2012002906A (en) * | 2010-06-15 | 2012-01-05 | Konica Minolta Opto Inc | Projection lens and projection device |
| WO2013125213A1 (en) * | 2012-02-22 | 2013-08-29 | 富士フイルム株式会社 | Imaging lens and imaging device equipped with same |
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| US10678025B2 (en) | 2017-12-25 | 2020-06-09 | Largan Precision Co., Ltd. | Photographing lens assembly, imaging apparatus and electronic device |
| US11262553B2 (en) | 2017-12-25 | 2022-03-01 | Largan Precision Co., Ltd. | Photographing lens assembly, imaging apparatus and electronic device |
| US11656442B2 (en) | 2017-12-25 | 2023-05-23 | Largan Precision Co., Ltd. | Photographing lens assembly, imaging apparatus and electronic device |
| WO2021128190A1 (en) * | 2019-12-26 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
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| CN107907971B (en) | 2020-02-18 |
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