Camera optical lens

Information

  • Patent Grant
  • 10641996
  • Patent Number
    10,641,996
  • Date Filed
    Wednesday, June 13, 2018
    6 years ago
  • Date Issued
    Tuesday, May 5, 2020
    4 years ago
Abstract
The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The camera optical lens further satisfies specific conditions.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Japanese Patent Applications Ser. No. 2018-041754 filed on Mar. 8, 2018, the entire content of which is incorporated herein by reference.


FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.


DESCRIPTION OF RELATED ART

In recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that it should have excellent optical characteristics and high light flux and their shape should be small, miniature camera lens with good imaging quality therefor has become a mainstream in the market.


A typical related camera lens comprises six lenses, and from the object side to the image side, the camera lens comprises in sequence: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power.


However, the refractive index distribution of the first lens and the shape of the first lens and the fourth lens are insufficient, the luminance is not sufficient for Fno≥2.14. In other traditional camera lenses, although Fno≥2.15, but the luminance is also insufficient.





BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.



FIG. 1 is a schematic diagram of a camera optical lens LA in accordance with an embodiment of the present invention;



FIG. 2 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;



FIG. 3 shows the longitudinal aberration of the camera optical lens shown in FIG. 2;



FIG. 4 shows the lateral color of the camera optical lens shown in FIG. 2;



FIG. 5 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 2;



FIG. 6 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;



FIG. 7 presents the longitudinal aberration of the camera optical lens shown in FIG. 6;



FIG. 8 presents the lateral color of the camera optical lens shown in FIG. 6;



FIG. 9 presents the field curvature and distortion of the camera optical lens shown in FIG. 6;



FIG. 10 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;



FIG. 11 presents the longitudinal aberration of the camera optical lens shown in FIG. 10;



FIG. 12 presents the lateral color of the camera optical lens shown in FIG. 10;



FIG. 13 presents the field curvature and distortion of the camera optical lens shown in FIG. 10.





DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.


As referring to FIG. 1, the present invention provides a camera lens LA. FIG. 1 shows a schematic diagram of a camera lens LA in accordance with an embodiment of the present invention. The camera optical lens LA comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens LA comprises in sequence: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. A glass panel GF can be arranged between the sixth lens L6 and the image surface. The glass plate GF can be a cover-glass or a filter with IR cut-off function. In another embodiment, the camera lens could also be configured to including the six lens L6 and the image plane without the glass panel GF.


The first lens L1 has a positive refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a positive refractive power, the fourth lens L4 has a negative refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 has a negative refractive power. In order to correct the aberration problem, the surface of the six lens should be designed to aspherical surface.


Here, the focal length of the whole camera optical lens LA is defined as f, the focal length of the first lens is defined as f1. The camera optical lens LA further satisfies the following condition: 1.00≤f1/f≤1.10 Condition 1.00≤f1/f≤1.10 fixes the positive refractive power of the first lens L1. If the lower limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected. On the contrary, if the upper limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop miniaturized lenses.


The curvature radius of the object side surface of the first lens L1 is defined as R1, the curvature radius of the image side surface of the first lens L1 is defined as R2. The following condition should be satisfied: −2.40≤(R1+R2)/(R1−R2)≤−1.90, by which, the shape of the first lens L1 is fixed, further, and when beyond this range, it is unfavorable for realization of high light flux (Fno), excellent optical characteristics and miniaturization.


The curvature radius of the object side surface of the fourth lens L4 is defined as R7, the curvature radius of the image side surface of the fourth lens L4 is defined as R8. The following condition should be satisfied: 11.40≤(R7+R8)/(R7−R8)≤16.00, by which, the shape of the fourth lens L4 is fixed, further, when beyond this range, it is unfavorable for realization of high light flux (Fno), excellent optical characteristics and miniaturization.


The second lens L2 has a negative refractive power and the fourth lens L4 has a negative refractive power. The focal length of the second lens L2 is f2, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: 0.15≤f2/f4≤0.16. This condition fixes the ratio between the focal length of the second lens L2 and the focal length of the fourth lens L4. When beyond this range, it is unfavorable for realization of high light flux (Fno), excellent optical characteristics and miniaturization.


The sixth lens L6 has a negative refractive power. The focal length of the whole camera optical lens LA is f, the curvature radius of the object side surface of the sixth lens L6 is defined as R11. The following condition should be satisfied: 2.30≤R11/f≤2.50. This condition fixes the ratio between the curvature radius of the object side surface of the sixth lens L6 and the focal length of the whole camera optical lens LA. When beyond this range, it is unfavorable for realization of high light flux (Fno), excellent optical characteristics and miniaturization.


When the focal length of the camera optical lens LA of the present invention, the focal length of each lens, the refractive power of the related lens, and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens LA has the advantage of high light flux (Fno), excellent optical characteristics and miniaturization.


In the following, an example will be used to describe the camera optical lens LA of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.


f: The focal length of the camera lens;


f1: The focal length of the first lens;


f2: The focal length of the second lens;


f3: The focal length of the third lens;


f4: The focal length of the fourth lens;


f5: The focal length of the fifth lens;


f6: The focal length of the sixth lens;


Fno: F value;


2ω: Field;


S1: Aperture;


R: The curvature radius of the optical surface, the central curvature radius in case of lens;


R1: The curvature radius of the object side surface of the first lens L1;


R2: The curvature radius of the image side surface of the first lens L1;


R3: The curvature radius of the object side surface of the second lens L2;


R4: The curvature radius of the image side surface of the second lens L2;


R5: The curvature radius of the object side surface of the third lens L3;


R6: The curvature radius of the image side surface of the third lens L3;


R7: The curvature radius of the object side surface of the fourth lens L4;


R8: The curvature radius of the image side surface of the fourth lens L4;


R9: The curvature radius of the object side surface of the fifth lens L5;


R10: The curvature radius of the image side surface of the fifth lens L5;


R11: The curvature radius of the object side surface of the sixth lens L6;


R12: The curvature radius of the image side surface of the sixth lens L6;


R13: The curvature radius of the object side surface of the optical filter GF;


R14: The curvature radius of the image side surface of the optical filter GF;


d: The thickness on-axis of the lens and the distance on-axis between the lens;


d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;


d1: The thickness on-axis of the first lens L1;


d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;


d3: The thickness on-axis of the second lens L2;


d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;


d5: The thickness on-axis of the third lens L3;


d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;


d7: The thickness on-axis of the fourth lens L4;


d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;


d9: The thickness on-axis of the fifth lens L5;


d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;


d11: The thickness on-axis of the sixth lens L6;


d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;


d13: The thickness on-axis of the optical filter GF;


d14: The distance on-axis from the image side surface to the image surface of the optical filter GF;


nd: The refractive power of the d line;


nd1: The refractive power of the d line of the first lens L1;


nd2: The refractive power of the d line of the second lens L2;


nd3: The refractive power of the d line of the third lens L3;


nd4: The refractive power of the d line of the fourth lens L4;


nd5: The refractive power of the d line of the fifth lens L5;


nd6: The refractive power of the d line of the sixth lens L6;


nd7: The refractive power of the d line of the optical filter GF;


vd: The abbe number;


v1: The abbe number of the first lens L1;


v2: The abbe number of the second lens L2;


v3: The abbe number of the third lens L3;


v4: The abbe number of the fourth lens L4;


v5: The abbe number of the fifth lens L5;


v6: The abbe number of the sixth lens L6;


v7: The abbe number of the optical filter GF.


IH: Image height;


TTL: Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface);


LB: The distance on-axis from the image side surface of the sixth lens L6 to the image surface (including the thickness of the glass plate GF);

y=(x2/R)/[1+{1−(k+1)(x2/R2)}1/2]+A4x4+A6x6+A8x8+A10x10+A12x12+A14x14+A16x16+A18x18+A20x20  (1)


Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 A18, A20 are aspheric surface indexes.


For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).


Embodiment 1


FIG. 2 is a schematic diagram of the camera lens LA in accordance with a first embodiment of the present invention. The data of table 1 includes: the curvature radius R of the object side and the image side from the first lens L1 to the sixth lens L6custom character the central distance of lens and the distance d between lensescustom character the refractive power nd and the abbe number vd. The data of table 2 includes: conic index kcustom character aspheric surface index.













TABLE 1






R
d
nd
v d





















S1

d0 =
−0.400

















R1
1.65682
d1 =
0.598
nd1
1.5441
v 1
56.04


R2
4.44584
d2 =
0.056






R3
4.27155
d3 =
0.233
nd2
1.6614
v 2
20.41


R4
2.36212
d4 =
0.257






R5
2.92027
d5 =
0.441
nd3
1.5441
v 3
56.04


R6
7.14159
d6 =
0.448






R7
5.75237
d7 =
0.325
nd4
1.6398
v 4
23.27


R8
4.83575
d8 =
0.393






R9
6.19213
d9 =
0.564
nd5
1.5441
v 5
56.04


R10
−4.28608
d10 =
0.243






R11
10.14013
d11 =
0.343
nd6
1.5441
v 6
56.04


R12
1.41653
d12 =
0.350






R13

d13 =
0.300
ndg
1.5168
vg
64.17


R14

d14 =
0.392













Table 2 shows the aspherical surface data of the camera optical lens LA in the embodiment 1 of the present invention.











TABLE 2








Conic Index
Aspherical Surface Index













k
A4
A6
A8
A10





R1
−7.3096E−05
−7.7522E−03
2.7173E−02
−7.7363E−02
9.4978E−02


R2
−5.0661E−03
−1.1602E−01
2.7521E−01
−4.0231E−01
2.9096E−01


R3
6.9197E−03
−1.7435E−01
4.2348E−01
−5.5670E−01
3.9319E−01


R4
−2.5853E−0.3
−1.2075E−01
3.2303E−01
−4.5563E−01
4.4034E−01


R5
2.2078E−03
−6.4554E−02
3.9610E−02
3.2971E−02
−2.8316E−01


R6
7.5761E−02
−5.5738E−02
2.6956E−03
8.4503E−02
−3.2345E−01


R7
4.6944E−02
−1.4435E−01
1.0530E−02
1.5580E−01
−3.5343E−01


R8
−1.3192E−02
−1.6949E−01
7.7943E−02
−3.9263E−02
1.1546E−02


R9
7.7019E−02
−7.4645E−03
−4.2344E−02
−9.4285E−03
2.6541E−02


R10
−4.4669E+01
5.4031E−02
−4.3121E−02
2.6460E−02
−2.1739E−02


R11
1.1120E−01
−3.0539E−01
1.9838E−01
−7.7608E−02
2.1680E−02


R12
−8.1878E+00
−1.4997E−01
8.4696E−02
−3.3079E−02
7.5243E−03












Aspherical Surface Index













A12
A14
A16
A18
A20





R1
−6.6391E−02
1.9259E−02
−2.2869E−03




R2
−9.5822E−02
4.3789E−03
2.4737E−03




R3
−9.9777E−02
−1.2918E−02
6.5498E−03




R4
−2.5242E−01
1.1049E−01
−2.9670E−02




R5
4.5553E−01
−3.2601E−01
9.1477E−02




R6
4.1873E−01
−2.6132E−01
6.4820E−02




R7
3.3416E−01
−1.6446E−01
3.2921E−02




R8
−7.8459E−03
5.9477E−03
−1.2200E−03




R9
−2.2889E−02
6.6625E−03
4.3017E−04
−3.9591E−04
3.2912E−05


R10
1.0859E−02
−3.0670E−03
5.1467E−04
−4.9432E−05
2.1071E−06


R11
−4.5053E−03
7.1938E−04
−8.7641E−05
7.1646E−06
−2.7854E−07


R12
−7.9053E−04
−1.7760E−05
1.3218E−05
−1.2153E−06
3.6877E−08









Table 7 shows the various values of the embodiments 1, 2, 3, and the values corresponding with the parameters which are already specified in the conditions.


As shown in Table 7, the first embodiment satisfies the various conditions.



FIG. 3 and FIG. 4 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens LA in the first embodiment. FIG. 5 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens LA in the first embodiment, the field curvature S in FIG. 5 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction. This is the same as in embodiment 2 and embodiment 3. As shown in FIG. 3 to FIG. 5, in this embodiment, the optical length TTL of the camera optical lens is 4.942 mm, the F value Fno is 1.82, it has an excellent optical characteristics with miniaturization and high light flux (Fno).


Embodiment 2


FIG. 6 is a schematic diagram of the camera lens LA in accordance with a second embodiment of the present invention. The data of table 1 includes: the curvature radius R of the object side and the image side from the first lens L1 to the sixth lens L6custom character the central distance of lens and the distance d between lensescustom character the refractive power nd and the abbe number vd. The data of table 2 includes: conic index kcustom character aspheric surface index.


Table 3 and table 4 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.













TABLE 3






R
d
nd
νd





















S1

d0 =
−0.400

















R1
1.68662
d1 =
0.562
nd1
1.5441
ν1
56.04


R2
5.00226
d2 =
0.046






R3
4.32430
d3 =
0.226
nd2
1.6614
ν2
20.41


R4
2.53903
d4 =
0.279






R5
3.06567
d5 =
0.393
nd3
1.5441
ν3
56.04


R6
6.68294
d6 =
0.458






R7
5.41132
d7 =
0.293
nd4
1.6398
ν4
23.27


R8
4.67508
d8 =
0.356






R9
6.75979
d9 =
0.589
nd5
1.5441
ν5
56.04


R10
−4.50657
d10 =
0.230






R11
10.02818
d11 =
0.411
nd6
1.5441
ν6
56.04


R12
1.42731
d12 =
0.350






R13

d13 =
0.300
nd7
1.5168
ν7
64.17


R14

d14 =
0.377













Table 4 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.











TABLE 4








Conic Index
Aspherical Surface Index













k
A4
A6
A8
A10





R1
−1.8622E−02
−8.9916E−03
2.6716E−02
−7.7670E−02
9.4983E−02


R2
−1.5152E+00
−1.1791E−01
2.7331E−01
−4.0282E−01
2.9148E−01


R3
−1.8770E+00
−1.7760E−01
4.2258E−01
−5.5801E−01
3.9130E−01


R4
1.8088E−01
−1.1748E−01
3.1930E−01
−4.6111E−01
4.3581E−01


R5
2.2705E−01
−6.3146E−02
3.8893E−02
3.5544E−02
−2.8003E−01


R6
−1.3068E+01
−5.9907E−02
7.2847E−03
8.6036E−02
−3.2413E−01


R7
4.7347E−01
−1.4389E−01
7.5080E−03
1.5522E−01
−3.5328E−01


R8
1.4876E+00
−1.6692E−01
7.6734E−02
−4.0102E−02
1.1374E−02


R9
2.6135E+00
−3.7496E−03
−4.4209E−02
−9.6328E−03
2.6575E−02


R10
−3.5687E+01
5.6222E−02
−4.3414E−02
2.6362E−02
−2.1754E−02


R11
−3.1194E+00
−3.0593E−01
1.9828E−01
−7.7618E−02
2.1679E−02


R12
−7.6463E+00
−1.4911E−01
8.4572E−02
−3.3102E−02
7.5207E−03












Aspherical Surface Index













A12
A14
A16
A18
A20





R1
−6.6268E−02
1.9326E−02
−2.3477E−03




R2
−9.4978E−02
4.6819E−03
2.0220E−03




R3
−1.0142E−01
−1.3468E−02
7.5070E−03




R4
−2.5493E−01
1.0989E−01
−2.8935E−02




R5
4.5703E−01
−3.2642E−01
8.9860E−02




R6
4.1813E−01
−2.6110E−01
6.5698E−02




R7
3.3406E−01
−1.6506E−01
3.1936E−02




R8
−7.7899E−03
6.0219E−03
−1.1745E−03




R9
−2.2870E−02
6.6676E−03
4.3161E−04
−3.9526E−04
3.3278E−05


R10
1.0857E−02
−3.0672E−03
5.1465E−04
−4.9438E−05
2.1043E−06


R11
−4.5053E−03
7.1941E−04
−8.7632E−05
7.1665E−06
−2.7824E−07


R12
−7.9087E−04
−1.7774E−05
1.3221E−05
−1.2144E−06
3.7065E−08









As shown in Table 7, the second embodiment satisfies the various conditions.



FIG. 7 and FIG. 8 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens 20 in the second embodiment. FIG. 9 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens in the second embodiment. As shown in FIG. 7 to FIG. 9, in this embodiment, the optical length TTL of the camera optical lens is 4.870 mm, the F value Fno is 1.82, it has an excellent optical characteristics with miniaturization and high light flux (Fno).


Embodiment 3


FIG. 10 is a schematic diagram of the camera lens LA in accordance with embodiment 3 of the present invention. The data of table 1 includes: the curvature radius R of the object side and the image side from the first lens L1 to the sixth lens L6custom character the central distance of lens and the distance d between lensescustom character the refractive power nd and the abbe number vd. The data of table 2 includes: conic index kcustom character aspheric surface index.


Table 5 and table 6 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.













TABLE 5






R
d
nd
νd



















S1

d0 =
−0.400















R1
1.63757
d1 =
0.595
nd1
1.5441
ν1
56.04


R2
4.15668
d2 =
0.039






R3
4.38406
d3 =
0.235
nd2
1.6614
ν2
20.41


R4
2.55654
d4 =
0.282






R5
3.07508
d5 =
0.441
nd3
1.5441
ν3
56.04


R6
7.27057
d6 =
0.464






R7
4.15958
d7 =
0.287
nd4
1.6398
ν4
23.27


R8
3.66436
d8 =
0.386






R9
6.83702
d9 =
0.566
nd5
1.5441
ν5
56.04


R10
−4.28035
d10 =
0.226






R11
10.44120
d11 =
0.367
nd6
1.5441
ν6
56.04


R12
1.42705
d12 =
0.350






R13

d13 =
0.300
ndg
1.5168
νg
64.17


R14

d14 =
0.387













Table 6 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.











TABLE 6








Conic Index
Aspherical Surface Index













k
A4
A6
A8
A10





R1
7.0126E−03
−8.1439E−03
2.8159E−02
−7.6472E−02
9.5502E−02


R2
−7.4194E−01
−1.1728E−01
2.7345E−01
−4.0284E−01
2.9129E−01


R3
−1.1608E+00
−1.7661E−01
4.2346E−01
−5.5706E−01
3.9241E−01


R4
4.0591E−01
−1.1549E−01
3.2312E−01
−4.5718E−01
4.3911E−01


R5
1.9904E−02
−6.4129E−02
3.6747E−02
3.3107E−02
−2.8092E−01


R6
−1.0425E+01
−5.9844E−02
4.5817E−03
8.6609E−02
−3.2240E−01


R7
−1.6736E+00
−1.4568E−01
1.0422E−02
1.5670E−01
−3.5272E−01


R8
−1.1760E−01
−1.6957E−01
7.7561E−02
−3.9747E−02
1.1292E−02


R9
6.7504E+00
−2.9036E−03
−4.4045E−02
−9.7755E−03
2.6520E−02


R10
−4.2834E+01
5.4355E−02
−4.3147E−02
2.6446E−02
−2.1743E−02


R11
4.8860E−02
−3.0539E−01
1.9837E−01
−7.7611E−02
2.1679E−02


R12
−8.3977E+00
−1.5011E−01
8.4680E−02
−3.3087E−02
7.5230E−03












Aspherical Surface Index













A12
A14
A16
A18
A20





R1
−6.6254E−02
1.9086E−02
−2.6490E−03




R2
−9.5365E−02
4.5120E−03
2.2119E−03




R3
−1.0041E−01
−1.2929E−02
7.2641E−03




R4
−2.5260E−01
1.1125E−01
−2.8530E−02




R5
4.5766E−01
−3.2528E−01
9.0532E−02




R6
4.1918E−01
−2.6100E−01
6.5242E−02




R7
3.3448E−01
−1.6448E−01
3.2738E−02




R8
−7.9351E−03
5.9298E−03
−1.2163E−03




R9
−2.2877E−02
6.6684E−03
4.3169E−04
−3.9579E−04
3.2796E−05


R10
1.0858E−02
−3.0671E−03
5.1467E−04
−4.9426E−05
2.1096E−06


R11
−4.5055E−03
7.1936E−04
−8.7643E−05
7.1648E−06
−2.7841E−07


R12
−7.9072E−04
−1.7779E−05
1.3217E−05
−1.2153E−06
3.6925E−08









As shown in Table 7, the third embodiment satisfies the various conditions.



FIG. 11 and FIG. 12 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 nm passes the camera optical lens in the third embodiment. FIG. 13 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens in the third embodiment. As shown in FIG. 11 to FIG. 13, in this embodiment, the optical length TTL of the camera optical lens is 4.925 mm, the F value Fno is 1.82, it has an excellent optical characteristics with miniaturization and high light flux (Fno).


Table 7 shows the various values of the embodiments 1, 2, 3, and the values corresponding with the parameters which satisfies the various conditions. In addition, the units of the various values shown in table 5 are 2ω (°)custom character f (mm)custom character f1 (mm)custom character f2 (mm)custom character f3 (mm)custom character f4 (mm)custom character f5 (mm)custom character f6 (mm) TTL (mm)custom character LB (mm)custom character IH (mm).













TABLE 7







Embodiment 1
Embodiment 2
Embodiment 3



















f1/f
1.043
1.056
1.076


(R1 + R2)/(R1 − R2)
−2.188
−2.017
−2.300


(R7 + R8)/(R7 − R8)
11.551
13.700
15.799


f2/f4
0.152
0.154
0.157


R11/f
2.344
2.400
2.450


Fno
1.82
1.82
1.82



74.7
75.4
74.6


f
4.326
4.179
4.262


f1
4.513
4.413
4.585


f2
−8.396
−9.792
−9.773


f3
8.758
10.026
9.445


f4
−55.061
−63.578
−62.163


f5
4.745
5.063
4.927


f6
−3.069
−3.111
−3.082


TTL
4.942
4.870
4.925


LB
1.042
1.027
1.037


IH
3.300
3.300
3.300









It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.

Claims
  • 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power; wherein the camera optical lens further satisfies the following conditions: 1.00≤f1/f≤1.10;0.15≤f2/f4≤0.16;−2.40≤(R1+R2)/(R1−R2)≤−1.90;11.40≤(R7+R8)/(R7−R8)≤16.00; wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;f2: the focal length of the second lens;f4: the focal length of the fourth lens;R1: the curvature radius of object side surface of the first lens;R2: the curvature radius of image side surface of the first lens;R7: the curvature radius of the object side surface of the fourth lens;R8: the curvature radius of the image side surface of the fourth lens.
  • 2. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: 2.30≤R11/f≤2.50; wheref: the focal length of the camera optical lens;R11: the curvature radius of object side surface of the sixth lens.
US Referenced Citations (1)
Number Name Date Kind
20160004050 Tang Jan 2016 A1
Related Publications (1)
Number Date Country
20190278060 A1 Sep 2019 US