Camera Optical Lens

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201711367813.4 and Ser. No. 201711365406.X filed on Dec. 18, 2017, 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

With the emergence of smart phones 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 their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

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 in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

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.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, 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. Optical element like optical filter GF can be arranged between the sixth lens L6 and the image surface Si. The first lens L1 is made of plastic material, the second lens L2 is made of glass material, the third lens L3 is made of plastic material, the fourth lens L4 is made of glass material, the fifth lens L5 is made of plastic material, the sixth lens L6 is made of plastic material.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.83≤f1/f≤11.98. Condition 0.83≤f1/f≤11.98 fixes the positive refractive power of the first lens L1. If the upper 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, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower 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 ultra-thin lenses. Preferably, the condition 1.33≤f1/f≤9.58 should further be satisfied.

The refractive power of the first lens L1 is n1. Here the following condition should satisfied: 1.7≤n1≤2.2. This condition fixes the refractive power of the first lens L1, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.544≤n1≤2.2.

The refractive power of the fourth lens L4 is n4. Here the following condition should satisfied: 1.7≤n4≤2.2. This condition fixes the refractive power of the fourth lens L4, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.737≤n4≤2.146.

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 camera optical lens 10 further satisfies the following condition: −15.41≤(R1+R2)/(R1−R2)≤−1.58, which fixes the shape of the first lens L, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the condition −9.63≤(R1+R2)/(R1−R2)≤−1.98 shall be satisfied.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has a positive refractive power.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.23≤d1≤1.18 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.37≤d1≤0.94 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has a positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: 0.79≤f2/f≤5.96. When the condition is satisfied, the positive refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition 1.27≤f2/f≤4.77 should be satisfied.

The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: −8.08≤(R3+R4)/(R3−R4)≤−0.37, which fixes the shape of the second lens L2 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, −5.05≤(R3+R4)/(R3−R4)≤−0.46.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.23≤d3≤0.93 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.38≤d3≤0.75 shall be satisfied.

In this embodiment, the object side surface of the third lens L3 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has a positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3. The following condition should be satisfied: 0.70≤f3/f≤2.54. When the condition is satisfied, the field curvature of the system can be reasonably and effectively balanced for further improving the image quality. Preferably, the condition 1.12≤f3/f≤2.03 should be satisfied.

The curvature radius of the object side surface of the third lens L3 is defined as R5, the curvature radius of the image side surface of the third lens L3 is defined as R6. The following condition should be satisfied: 0.74≤(R5+R6)/(R5−R6)≤3.78, which is beneficial for the shaping of the third lens L3, and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided. Preferably, the following condition shall be satisfied, 1.18≤(R5+R6)/(R5−R6)≤3.02.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.11≤d5≤0.38 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.18≤d5≤0.30 shall be satisfied.

In this embodiment, the object side surface of the fourth lens L4 is a concave surface relative to the proximal axis, the image side surface of the fourth lens L4 is a convex surface relative to the proximal axis. The fourth lens L4 has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: −1.83≤f4/f≤−0.50. When the condition is satisfied, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. Preferably, the condition −1.14≤f4/f≤−0.63 should be satisfied.

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: −5.54≤(R7+R8)/(R7−R8)≤−1.04, which fixes the shaping of the fourth lens L4. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected. Preferably, the following condition shall be satisfied, −3.46≤(R7+R8)/(R7−R8)≤−1.31.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.12≤d7≤0.38 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.19≤d7≤0.30 shall be satisfied.

In this embodiment, the object side surface of the fifth lens L5 is a convex surface relative to the proximal axis, the image side surface of the fifth lens L5 is a convex surface relative to the proximal axis. The fifth lens L5 has a positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: 0.34≤f5/f≤1.11, which can effectively make the light angle of the camera lens flat and reduces the tolerance sensitivity. Preferably, the condition 0.55≤f5/f≤0.89 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10. The following condition should be satisfied: 0.19≤(R9+R10)/(R9−R10)≤0.70, which fixes the shaping of the fifth lens L5. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected. Preferably, the following condition shall be satisfied, 0.31≤(R9+R10)/(R9−R10)≤0.56.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.41≤d9≤1.45 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.65≤d9≤1.16 shall be satisfied.

In this embodiment, the object side surface of the sixth lens L6 is a concave surface relative to the proximal axis, the image side surface of the sixth lens L6 is a concave surface relative to the proximal axis, and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: −1.87≤f6/f≤−0.45. When the condition is satisfied, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. Preferably, the condition −1.17≤f6/f≤−0.56 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −0.04≤(R11+R12)/(R11−R12)≤0.48, which fixes the shaping of the sixth lens L6. When beyond this range, with the development into the direction of ultra-thin and wide-angle lens, the problem like chromatic aberration is difficult to be corrected. Preferably, the following condition shall be satisfied, −0.02≤(R11+R12)/(R11−R12)≤0.39.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.17≤d11≤0.95 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.27≤d11≤0.76 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.53≤f12/f≤2.07, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for realizing the ultra-thin lens. Preferably, the condition 0.84≤f12/f≤1.65 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.79 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.53 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 1.85. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 1.82.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

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

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1

R
d
nd
νd

S1
∞
d0=
−0.175

R1
2.497
d1=
0.698
nd1
1.5440
ν1
56.10

R2
6.125
d2=
0.054

R3
6.141
d3=
0.540
nd2
1.7093
ν2
40.55

R4
−259.398
d4=
0.090

R5
−5.488
d5=
0.223
nd3
1.6150
ν3
25.30

R6
−2.368
d6=
0.083

R7
−1.664
d7=
0.244
nd4
1.7375
ν4
22.04

R8
−7.536
d8=
0.117

R9
4.937
d9=
0.869
nd5
1.5440
ν5
56.20

R10
−1.931
d10=
0.842

R11
−2.917
d11=
0.538
nd6
1.5260
ν6
53.10

R12
3.021
d12=
0.439

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.306

Where:

In which, the meaning of the various symbols is as follows.

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;

ndg: 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;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

TABLE 2

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
1.0207E+00
−0.01646056
−0.012674726
−0.000980726
−0.020240384
0.029245074
−0.017575019
0.002552021

R2
1.8122E+01
−0.1991009
0.071158834
−0.025570349
0.011611201
−0.001286049
−0.002439
−0.00072197

R3
1.8965E+01
−0.18427337
0.038569179
0.017161171
−0.020645403
0.011871868
−0.010467822
0.002087435

R4
3.4865E+04
−0.097026227
−0.16840204
0.16605816
−0.051821021
0.003396314
−0.000760821
0.000370609

R5
8.7323E+00
−0.053955204
−0.17498629
0.13478959
0.003565576
−0.009592001
−0.003233075
0.001095277

R6
−2.3630E+00
−0.021791866
−0.077556678
0.085866327
−0.017559995
0.002620254
−0.002114653
0.000363072

R7
−2.1323E−01
−0.013031292
0.057244231
0.028164492
−0.013322967
−0.005239532
2.42E−03
−1.18E−05

R8
−4.6385E+01
−0.069280584
0.084599384
−0.016241363
−0.000635226
0.000977303
−1.69E−04
−1.48E−05

R9
8.3849E+00
−0.05616846
0.019342024
−0.022751754
0.006827053
−9.51E−04
−1.96E−05
8.13E−05

R10
−6.1732E−02
0.10130296
−0.031642931
0.00225449
−8.12E−05
−2.67E−04
8.01E−05
2.68E−05

R11
−2.8668E−02
0.031607571
−0.053405184
0.023930005
−0.007371467
0.000955773
1.53E−04
−3.76E−05

R12
−7.7922E−01
−0.048808515
0.006628397
−0.000425119
−4.40E−05
1.12E−05
−8.18E−07
1.88E−08

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

IH: Image height

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

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).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, P1R1 and P1R2 represent respectively the object side surface and image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and image side surface of the sixth lens L6, The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3

Inflexion
Inflexion
Inflexion
Inflexion

Inflexion
point
point
point
point

point
position
position
position
position

number
1
2
3
4

P1R1
1
0.905

P1R2
1
0.285

P2R1
1
0.295

P2R2
0

P3R1
2
0.995
1.365

P3R2
1
0.935

P4R1
1
0.815

P4R2
1
0.695

P5R1
2
0.665
1.385

P5R2
1
1.565

P6R1
0

P6R2
0
0.875

TABLE 4

Arrest
Arrest
Arrest

point
point
point

number
position 1
position 2

P1R1
0

P1R2
1
0.495

P2R1
1
0.515

P2R2
0

P3R1
0

P3R2
1
1.285

P4R1
1
1.325

P4R2
1
0.995

P5R1
2
1.055
1.505

P5R2
0

P6R1
0

P6R2
1

FIG. 2 and FIG. 3 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 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 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 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.167 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 84.01°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5

R
d
nd
νd

S1
∞
d0=
−0.047

R1
4.036
d1=
0.463
nd1
1.544000
ν1
56.10

R2
5.239
d2=
0.038

R3
5.626
d3=
0.622
nd2
1.778180
ν2
30.31

R4
−19.340
d4=
0.073

R5
−5.897
d5=
0.254
nd3
1.615000
ν3
25.30

R6
−2.230
d6=
0.162

R7
−1.708
d7=
0.251
nd4
1.708817
ν4
16.56

R8
−7.002
d8=
0.140

R9
5.150
d9=
0.967
nd5
1.544000
ν5
56.20

R10
−1.865
d10=
0.787

R11
−5.239
d11=
0.341
nd6
1.526000
ν6
53.10

R12
2.69164
d12=
0.544

R13
Infinity
d13=
0.210
ndg
1.516800
νg
64.17

R14
Infinity
d14=
0.412

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
6.5150E−01
−0.01304301
−0.020747815
−0.013915237
−0.021241179
0.030475422
−0.015850572
0.003324746

R2
1.7845E+01
−0.21507506
0.071038922
−0.024939034
0.011454274
−0.00181496
−0.002770508
−0.001119521

R3
1.9251E+01
−0.18580544
0.037790537
0.016925615
−0.020749421
0.012080982
−0.010194189
0.002308801

R4
−2.1646E+02
−0.093743876
−0.16572212
0.16641847
−0.052235211
0.003330935
−0.000819089
3.43E−04

R5
8.8631E+00
−0.05592061
−0.17542522
0.13506144
0.003712755
−0.009583337
−0.003236732
0.001082103

R6
−2.6660E+00
−0.020874762
−0.079175561
0.085929136
−0.017965579
0.00269401
−0.00209677
0.000403862

R7
−2.3774E−01
−0.011710973
0.058275738
0.028425875
−0.013339107
−0.005322677
0.002353803
−4.99E−05

R8
−3.5965E+01
−0.071225666
0.081371674
−0.016074989
−0.000764541
0.000995868
−0.000173093
−1.26E−05

R9
6.8680E+00
−0.059763862
0.017843151
−0.022533549
0.00708834
−0.000873877
−1.06E−05
8.37977E−05

R10
4.6954E−02
0.092601561
−0.030571381
0.002683997
−9.81427E−05
−5.28724E−05
9.97917E−05
−1.34E−05

R11
2.8098E+00
0.092601561
−0.04623548
0.024515323
−0.007206416
0.000507117
0.000183293
−2.72E−05

R12
−6.0932E−01
0.019570135
0.00664569
−0.000441239
−4.83E−05
1.14E−05
−7.86E−07
1.84E−08

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in embodiment 2 of the present invention.

TABLE 7

Inflexion
Inflexion
Inflexion
Inflexion
Inflexion

point
point
point
point
point

number
position 1
position 2
position 3
position 4

P1R1
1
0.655

P1R2
2
0.305
1.135

P2R1
1
0.305

P2R2
0

P3R1
1
0.995

P3R2
1
0.945

P4R1
1
0.795

P4R2
1
0.725

P5R1
2
0.595
1.405

P5R2
0

P6R1
0

P6R2
1
1.005

TABLE 8

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1
1
0.965

P1R2
1
0.535

P2R1
1
0.545

P2R2
0

P3R1
0

P3R2
1
1.295

P4R1
1
1.295

P4R2
1
1.045

P5R1
2
0.965
1.545

P5R2
0

P6R1
0

P6R2
1
2.325

FIG. 6 and FIG. 7 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. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.979 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 89.19°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 9 and table 10 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 9

R
d
nd
νd

S1
∞
d0=
−0.226

R1
2.187
d1 =
0.785
nd1
1.544000
ν1
56.10

R2
5.019
d2=
0.076

R3
7.109
d3=
0.469
nd2
2.099763
ν2
34.63

R4
11.787
d4=
0.065

R5
−14.398
d5=
0.229
nd3
1.615000
ν3
25.30

R6
−2.740
d6=
0.089

R7
−1.873
d7=
0.238
nd4
2.145693
ν4
20.48

R8
−3.989
d8=
0.177

R9
4.755
d9=
0.815
nd5
1.544000
ν5
56.20

R10
−2.092
d10=
0.745

R11
−3.206
d11=
0.633
nd6
1.526000
ν6
53.10

R12
2.613534
d12=
0.428

R13
Infinity
d13=
0.210
ndg
1.516800
νg
64.17

R14
Infinity
d14=
0.2930182

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
1.0768E+00
−0.024656867
−0.004404011
0.000277744
−0.021293586
0.02831539
−0.017834953
0.002650198

R2
1.2568E+01
−0.19620671
0.063430725
−0.030150638
0.011674731
−0.000458666
−0.002679094
−0.001763337

R3
1.9335E+01
−0.17697894
0.029483128
0.014275015
−0.023020081
0.010907287
−0.009938197
0.00332474

R4
−1.2125E+03
−0.079490071
−0.16582388
0.16123655
−0.053549616
0.003615599
−0.000370611
0.000572788

R5
−2.6817E+01
−0.040509726
−0.18045863
0.13263959
0.001902717
−0.010223045
−0.003166603
0.001390317

R6
−5.7204E+00
−0.005886658
−0.076509565
0.082072042
−0.018033057
0.00295648
−0.001922482
0.000366031

R7
−2.4191E−01
−0.009619914
0.055541446
0.028696834
−0.013545835
−0.005406218
0.002388419
3.50908E−05

R8
−1.0800E+01
−0.061247308
0.097380309
−0.016989563
−0.001470847
0.000937559
−9.06529E−05
−4.31E−06

R9
5.7488E+00
−0.046604588
0.022033671
−0.019362352
0.006813071
−0.001034528
−3.74E−05
3.72E−05

R10
−2.0969E−02
0.10668875
−0.033979968
0.002379597
0.000745338
−0.000253836
1.85358E−05
2.63E−05

R11
1.3926E−01
0.10668875
−0.051906214
0.023689795
−0.00743884
0.000957087
0.000156589
−3.39E−05

R12
−1.0734E+00
0.021473749
0.006968629
−0.000388026
−4.98E−05
1.09E−05
−7.83E−07
2.03E−08

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11

Inflexion
Inflexion
Inflexion
Inflexion
Inflexion

point
point
point
point
point

number
position 1
position 2
position 3
position 4

P1R1
1
0.985

P1R2
1
0.315

P2R1
1
0.275

P2R2
1
0.215

P3R1
1
0.995

P3R2
1
0.895

P4R1
1
0.775

P4R2
1
0.675

P5R1
2
0.815
1.455

P5R2
1
1.515

P6R1
1
1.645

P6R2
1
0.925

TABLE 12

Arrest
Arrest
Arrest

point
point
point

number
position 1
position 2

P1R1
0

P1R2
1
0.565

P2R1
1
0.475

P2R2
1
0.365

P3R1
1
1.305

P3R2
1
1.205

P4R1
1
1.205

P4R2
1
0.995

P5R1
2
1.335
1.525

P5R2
0

P6R1
0

P6R2
1
2.015

FIG. 10 and FIG. 11 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 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 588 nm passes the camera optical lens 30 in the third embodiment.

As shown in Table 13, the third embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.163 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 84.10°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13

Embodiment 1
Embodiment 2
Embodiment 3

f
3.900
3.562
3.894

f1
7.256
28.438
6.489

f2
8.466
5.662
15.474

f3
6.594
5.683
5.462

f4
−2.948
−3.252
−3.277

f5
2.671
2.645
2.788

f6
−2.736
−3.331
−2.639

f12
4.110
4.905
4.695

(R1 + R2)/(R1 − R2)
−2.376
−7.707
−2.544

(R3 + R4)/(R3 − R4)
−0.954
−0.549
−4.039

(R5 + R6)/(R5 − R6)
2.518
2.216
1.470

(R7 + R8)/(R7 − R8)
−1.567
−1.645
−2.770

(R9 + R10)/(R9 − R10)
0.438
0.468
0.389

(R11 + R12)/(R11 − R12)
−0.018
0.321
0.102

f1/f
1.861
7.984
1.667

f2/f
2.171
1.590
3.974

f3/f
1.691
1.596
1.403

f4/f
−0.756
−0.913
−0.842

f5/f
0.685
0.743
0.716

f6/f
−0.701
−0.935
−0.678

f12/f
1.054
1.377
1.206

d1
0.698
0.463
0.785

d3
0.540
0.622
0.469

d5
0.223
0.254
0.229

d7
0.244
0.251
0.238

d9
0.869
0.967
0.815

d11
0.538
0.341
0.633

Fno
1.800
1.800
1.800

TTL
5.253
5.265
5.251

d1/TTL
0.133
0.088
0.150

d3/TTL
0.103
0.118
0.089

d5/TTL
0.042
0.048
0.044

d7/TTL
0.047
0.048
0.045

d9/TTL
0.165
0.184
0.155

d11/TTL
0.102
0.065
0.120

n1
1.5440
1.544000
1.544000

n2
1.7093
1.778180
2.099763

n3
1.6150
1.615000
1.615000

n4
1.7375
1.708817
2.145693

n5
1.5440
1.544000
1.544000

n6
1.5260
1.526000
1.526000

v1
56.1000
56.1000
56.1000

v2
40.5522
30.3140
34.6281

v3
25.3000
25.3000
25.3000

v4
22.0419
16.5562
20.4801

v5
56.2000
56.2000
56.2000

v6
53.1000
53.1000
53.1000

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.

Number	Date	Country	Kind
201711365406.X	Dec 2017	CN	national
201711367813.4	Dec 2017	CN	national

Camera Optical Lens

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (2)