Camera optical lens

Description

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 glass material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, and 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 further satisfies the following condition: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤10 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 following condition shall be satisfied, 1.004≤f1/f≤6.5895.

The refractive index of the first lens L1 is defined as n1. Here the following condition should satisfied: 1.7≤n1≤2.2. This condition fixes the refractive index of the first lens L1, and refractive index 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, 1.705≤n1≤2.15.

The thickness on-axis of the first lens L1 is defined as d1, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.01≤d1/TTL≤0.2 should be satisfied. This condition fixes the ratio between the thickness on-axis of the first lens L1 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.026≤d1/TTL≤0.168 shall be satisfied.

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

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: −52.45≤(R1+R2)/(R1−R2)≤−3.59, which fixes the shape of the first lens L1. 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 −32.78≤(R1+R2)/(R1−R2)≤−4.49 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.11≤d1≤1.12 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.18≤d1≤0.90 shall be satisfied.

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

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: 0.92≤f2/f≤4.45. 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 1.48≤f2/f≤3.56 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: −5.40≤(R3+R4)/(R3−R4)≤−1.48, 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, −3.38≤(R3+R4)/(R3−R4)≤−1.85.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.19≤d3≤0.75 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.31≤d3≤0.60 shall be satisfied.

In this embodiment, the third lens L3 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: 100≤f3/f, by which the field curvature of the system then can be reasonably and effectively balanced.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.11≤d5≤0.39 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.17≤d5≤0.31 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

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: 0.58≤f4/f≤1.85, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.93≤f4/f≤1.48 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: 1.52≤(R7+R8)/(R7−R8)≤4.84, by which, 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 following condition shall be satisfied, 2.43≤(R7+R8)/(R7−R8)≤3.87.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.27≤d7≤0.85 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.43≤d7≤0.68 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

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: −1.87≤f5/f≤−0.59, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.17≤f5/f≤−0.74 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: −3.43≤(R9+R10)/(R9−R10)≤−1.00, by which, the shape of the fifth lens L5 is fixed, further, 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 following condition shall be satisfied, −2.15≤(R9+R10)/(R9−R10)≤−1.25.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.12≤d9≤0.37 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.20≤d9≤0.30 shall be satisfied.

In this embodiment, the sixth lens L6 has a positive refractive power with a convex object side surface and a concave image side surface relative to the proximal axis.

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: 0.84≤f6/f≤7.29, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.35≤f6/f≤5.83 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: −29.36≤(R11+R12)/(R11−R12)≤65.28, by which, the shape of the sixth lens L6 is fixed, further, 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 following condition shall be satisfied, −18.35≤(R11+R12)/(R11−R12)≤52.22.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.55≤d11≤1.97 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.89≤d11≤1.57 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≤1.83, 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 0.85≤f12/f≤1.46 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.07 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 5.80 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.06. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.02.

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
vd

S1
∞
d0=
−0.300

R1
1.871
d1=
0.355
nd1
1.7435
v1
56.30

R2
2.262
d2=
0.197

R3
2.504
d3=
0.440
nd2
1.5140
v2
56.80

R4
5.446
d4=
0.340

R5
−1932.884
d5=
0.259
nd3
1.6056
v3
20.02

R6
−373.187
d6=
0.200

R7
−2.836
d7=
0.550
nd4
1.5300
v4
69.99

R8
−1.495
d8=
0.048

R9
−1.916
d9=
0.250
nd5
1.6140
v5
25.60

R10
−9.511
d10=
0.204

R11
1.616
d11=
1.229
nd6
1.4874
v6
43.05

R12
1.852
d12=
0.621

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.601

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 index of the d line;

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

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

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

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

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

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

ndg: The refractive index 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
4.9179E−01
−0.016161767
0.008352796
−0.011228986
0.013295837
−0.009884305
0.003189658
−0.000259957

R2
3.8729E−01
−0.031264038
0.00091055
0.008581547
−0.001928465
−0.013382933
0.008239422
−0.001328269

R3
−6.4815E+00
−0.000425687
−0.041939526
0.004199017
0.036045525
−0.073128067
0.033059949
−0.002392712

R4
1.1686E+01
−0.053075515
−0.034378032
−0.037895937
0.059033592
−0.067481402
0.027860904
−0.00110033

R5
−2.2790E+18
−0.083757648
−0.039771998
−0.063766996
−0.008467134
0.027866051
0.003755607
−0.002082867

R6
−7.0359E+08
−0.050100415
0.038693097
−0.14078822
0.15304992
−0.087036869
0.020964858
−0.000111172

R7
3.1668E+00
−0.044641733
0.054301621
0.07676728
−0.056355753
−0.01200729
0.020621781
−0.004431186

R8
−3.1340E−01
0.008464767
−0.035728038
0.061641093
−0.036663688
0.018202611
−0.002912174
−6.41824E−05

R9
−9.9987E+00
0.021710569
−0.20382079
0.36118867
−0.43053065
0.30206248
−0.11165298
0.016685763

R10
5.9116E+00
−0.16646409
0.23615172
−0.25725607
0.17144767
−0.063705826
1.24E−02
−9.90E−04

R11
−1.1795E+01
−0.16646409
0.031287796
−0.002303106
−0.00027483
1.44E−05
7.70E−06
−7.14E−07

R12
−3.2878E+00
−0.10539554
0.016438127
−0.002984639
0.000318358
−1.76E−05
4.11E−07
−3.53E−09

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 point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
1
1.035

P2R1
1
0.685

P2R2
1
0.485

P3R1
1
1.135

P3R2
1
1.215

P4R1
2
0.805
1.285

P4R2
1
1.025

P5R1
1
1.365

P5R2
2
1.215
1.575

P6R1
3
0.475
1.455
2.235

P6R2
1
0.825

TABLE 4

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.985

P2R2
1
0.745

P3R1
0

P3R2
0

P4R1
0

P4R2
1
1.325

P5R1
0

P5R2
0

P6R1
3
1.045
1.905
2.405

P6R2
1
1.915

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 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 587.6 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 2.113 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 79.47°, 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
vd

S1
∞
d0=
−0.296

R1
1.944
d1=
0.747
nd1
1.7095
v1
56.30

R2
2.830
d2=
0.178

R3
4.116
d3=
0.383
nd2
1.5140
v2
56.80

R4
10.680
d4=
0.169

R5
−1524.077
d5=
0.216
nd3
1.8221
v3
20.00

R6
−1524.154
d6=
0.250

R7
−2.881
d7=
0.540
nd4
1.5300
v4
70.00

R8
−1.468
d8=
0.082

R9
−1.740
d9=
0.250
nd5
1.6140
v5
25.60

R10
−6.590
d10=
0.230

R11
2.119
d11=
1.312
nd6
1.5524
v6
39.20

R12
2.02383
d12=
0.487

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.467

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
4.8424E−01
−0.009724697
0.00643229
−0.014337536
0.013142226
−0.009123083
0.003418332
−0.000802181

R2
1.0752E+00
−0.005961071
−0.010891846
0.001214623
−0.002515973
−0.013001004
0.00725798
−0.003406199

R3
−2.1616E+01
0.013519457
−0.034892051
0.001581024
0.035138193
−0.07384995
0.031997782
−0.003308671

R4
−4.5323E−01
−0.058038389
−0.029720544
−0.035003017
0.059952828
−0.066779128
0.028584481
−0.000503638

R5
0.0000E+00
−0.067501665
−0.034645078
−0.052356151
−0.002814502
0.028293174
0.00263992
−0.003240837

R6
0.0000E+00
−0.033093803
0.044132362
−0.14409767
0.15167164
−0.08627673
0.022271829
0.001044715

R7
3.9609E+00
−0.048171686
0.043561288
0.071166731
−0.057867191
−0.011201432
0.021965291
−0.003309662

R8
−3.4624E−01
0.016867292
−0.037120467
0.060950025
−0.037172093
0.01782299
−0.003081811
−5.07273E−05

R9
−6.9033E+00
0.017455814
−0.19850846
0.3630793
−0.43029673
0.30189129
−0.11178126
0.016614828

R10
6.2688E+00
−0.17269288
0.23819092
−0.25728957
0.17134048
−0.063731484
1.24E−02
−9.86E−04

R11
−2.1042E+01
−0.17269288
0.031742281
−0.002217256
−0.000281071
1.27E−05
7.61E−06
−6.87E−07

R12
−4.1628E+00
−0.10864802
0.016229825
−0.003019411
0.000316908
−1.73E−05
4.44E−07
−5.89E−09

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 point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
1
0.855

P2R1
1
0.665

P2R2
2
0.345
1.135

P3R1
1
1.105

P3R2
1
1.075

P4R1
2
1.045
1.225

P4R2
1
1.045

P5R1
1
1.385

P5R2
2
1.285
1.505

P6R1
3
0.425
1.455
2.235

P6R2
1
0.805

TABLE 8

Arrest point number
Arrest point position 1

P1R1
0

P1R2
1
1.095

P2R1
1
0.935

P2R2
1
0.555

P3R1
0

P3R2
1
1.195

P4R1
0

P4R2
1
1.385

P5R1
0

P5R2
0

P6R1
1
0.865

P6R2
1
1.885

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 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 587.6 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 2.150 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 78.46°, 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
vd

S1
∞
d0=
−0.265

R1
1.884
d1=
0.229
nd1
2.1002
v1
56.30

R2
2.034
d2=
0.218

R3
2.501
d3=
0.499
nd2
1.5140
v2
56.80

R4
6.612
d4=
0.313

R5
437.829
d5=
0.255
nd3
1.6862
v3
22.00

R6
1099.460
d6=
0.231

R7
−2.959
d7=
0.567
nd4
1.5300
v4
70.00

R8
−1.494
d8=
0.046

R9
−1.725
d9=
0.249
nd5
1.6140
v5
25.60

R10
−8.324
d10=
0.162

R11
1.506
d11=
1.108
nd6
1.5370
v6
44.34

R12
1.89632
d12=
0.677

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.658

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
4.5822E−01
−0.018700848
0.007391817
−0.010983518
0.013340825
−0.010022809
0.003212744
−3.56816E−05

R2
4.6448E−01
−0.028832813
0.000812783
0.008173558
−0.001738071
−0.012643694
0.009109667
−0.000555918

R3
−6.4775E+00
0.012526369
−0.03405044
0.002735979
0.036265363
−0.071769847
0.033972662
−0.002218848

R4
1.4245E+01
−0.048656454
−0.033513853
−0.039471875
0.059250087
−0.066744947
0.028207081
−0.00132376

R5
−2.2392E+08
−0.082680675
−0.037347854
−0.062972294
−0.00835786
0.028052976
0.003958199
−0.00174194

R6
7.2798E+05
−0.048814676
0.038933661
−0.14033791
0.15313342
−0.087081001
0.02088604
−0.000245802

R7
3.2631E+00
−0.041213669
0.053602059
0.07657964
−0.056569202
−0.012166146
0.02047916
−0.004525322

R8
−3.1730E−01
0.00754921
−0.03526554
0.062070175
−0.036594465
0.018149432
−0.002959381
−7.67193E−05

R9
−1.0342E+01
0.025489962
−0.20035819
0.36147388
−0.43097217
0.30181044
−0.1117109
0.016744206

R10
−1.4718E+01
−0.16262544
0.23781018
−0.25730316
0.17129507
−0.06376633
1.24E−02
−9.79E−04

R11
−1.0387E+01
−0.16262544
0.030515407
−0.002239508
−0.000261673
1.37E−05
7.40E−06
−6.93E−07

R12
−3.5656E+00
−0.10430584
0.016717008
−0.002980936
0.000315193
−1.74E−05
4.51E−07
−9.02E−09

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 point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.745

P2R2
1
0.455

P3R1
2
0.035
1.115

P3R2
2
0.045
1.225

P4R1
2
0.775
1.315

P4R2
1
1.025

P5R1
1
1.365

P5R2
2
1.175
1.635

P6R1
3
0.485
1.475
2.205

P6R2
1
0.785

TABLE 12

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
1.085

P2R2
1
0.705

P3R1
1
0.055

P3R2
1
0.065

P4R1
0

P4R2
1
1.325

P5R1
0

P5R2
0

P6R1
3
1.095
1.895
2.375

P6R2
1
1.785

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 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 587.6 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 2.033 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 81.64°, 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
4.225
4.301
4.066

f1
10.487
6.481
12.926

f2
8.583
12.774
7.518

f3
763.559
135926382
1060.105

f4
5.222
4.987
5.020

f5
−3.956
−3.927
−3.595

f6
9.608
20.899
6.840

f12
4.929
4.549
4.959

(R1 + R2)/(R1 −
−10.556
−5.386
−26.227

R2)

(R3 + R4)/(R3 −
−2.702
−2.254
−2.217

R4)

(R5 + R6)/(R5 −
1.479
−39831.640
−2.323

R6)

(R7 + R8)/(R7 −
3.229
3.078
3.039

R8)

(R9 + R10)/
−1.504
−1.717
−1.523

(R9 − R10)

(R11 + R12)/
−14.678
43.520
−8.712

(R11 − R12)

f1/f
2.482
1.507
3.179

f2/f
2.031
2.970
1.849

f3/f
180.714
31600709.6
260.722

f4/f
1.236
1.159
1.235

f5/f
−0.936
−0.913
−0.884

f6/f
2.274
4.859
1.682

f12/f
1.167
1.058
1.220

d1
0.355
0.747
0.229

d3
0.440
0.383
0.499

d5
0.259
0.216
0.255

d7
0.550
0.540
0.567

d9
0.250
0.250
0.249

d11
1.229
1.312
1.108

Fno
2.000
2.000
2.000

TTL
5.502
5.520
5.422

d1/TTL
0.064
0.135
0.042

d3/TTL
0.080
0.069
0.092

d5/TTL
0.047
0.039
0.047

d7/TTL
0.100
0.098
0.105

d9/TTL
0.045
0.045
0.046

d11/TTL
0.223
0.238
0.204

n1
1.7435
1.7095
2.1002

n2
1.5140
1.5140
1.5140

n3
1.6056
1.8221
1.6862

n4
1.5300
1.5300
1.5300

n5
1.6140
1.6140
1.6140

n6
1.4874
1.5524
1.5370

v1
56.3000
56.3000
56.3000

v2
56.8000
56.8000
56.8000

v3
20.0215
19.9996
22.0000

v4
69.9925
70.0000
70.0003

v5
25.6000
25.6000
25.6000

v6
43.0530
39.2048
44.3448

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 has a positive refractive power, a second lens has a positive refractive power, a third lens has a positive refractive power, a fourth lens has a positive refractive power, a fifth lens has a negative refractive power, and a sixth lens has a positive refractive power; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10;1.7≤n1≤2.2;0.01≤d1/TTL≤0.2;wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n1: the refractive index of the first lens;d1: the thickness on-axis of the first lens;TTL: the total optical length of the camera optical lens.
2. The camera optical lens as described in claim 1, wherein the first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material.
3. The camera optical lens as described in claim 1 further satisfying the following conditions: 1.004≤f1/f≤6.5895;1.705≤n1≤2.15;0.026≤d1/TTL≤0.168.
4. The camera optical lens as described in claim 1, wherein first lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −52.45≤(R1+R2)/(R1−R2)≤−3.59;0.11 mm≤d1≤1.12 mm; whereR1: the curvature radius of object side surface of the first lens;R2: the curvature radius of image side surface of the first lens;d1: the thickness on-axis of the first lens.
5. The camera optical lens as described in claim 4 further satisfying the following conditions: −32.78≤(R1+R2)/(R1−R2)≤−4.49;0.18 mm≤d1≤0.90 mm.
6. The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.92≤f2/f≤4.45;−5.40≤(R3+R4)/(R3−R4)≤−1.48;1.19 mm≤d3≤0.75 mm; wheref: the focal length of the camera optical lens;f2: the focal length of the second lens;R3: the curvature radius of the object side surface of the second lens;R4: the curvature radius of the image side surface of the second lens;d3: the thickness on-axis of the second lens.
7. The camera optical lens as described in claim 6 further satisfying the following conditions: 1.48≤f2/f≤3.56;−3.38≤(R3+R4)/(R3−R4)≤−1.85;0.31 mm≤d3≤1.60 mm.
8. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: 100≤f3/f; 0.11 mm≤d5≤0.39 mm; wheref: the focal length of the camera optical lens;f3: the focal length of the third lens;d5: the thickness on-axis of the third lens.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: 0.17 mm≤d5≤0.31 mm.
10. The camera optical lens as described in claim 1, wherein the fourth lens has a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.58≤f4/f≤1.85;1.52≤(R7+R8)/(R7−R8)≤4.84;0.27 mm≤d7≤0.85 mm; wheref: the focal length of the camera optical lens;f4: the focal length of the fourth 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;d7: the thickness on-axis of the fourth lens.
11. The camera optical lens as described in claim 10 further satisfying the following conditions: 0.93≤f4/f≤1.48;2.43≤(R7+R8)/(R7−R8)≤3.87;0.43 mm≤d7≤0.68 mm.
12. The camera optical lens as described in claim 1, wherein the fifth lens has a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: −1.87≤f5/f≤−0.59;−3.43≤(R9+R10)/(R9−R10)≤−1.00;0.12 mm≤d9≤0.37 mm; wheref: the focal length of the camera optical lens;f5: the focal length of the fifth lens;R9: the curvature radius of the object side surface of the fifth lens;R10: the curvature radius of the image side surface of the fifth lens;d9: the thickness on-axis of the fifth lens.
13. The camera optical lens as described in claim 12 further satisfying the following conditions: −1.17≤f5/f≤0.74;−2.15≤(R9+R10)/(R9−R10)≤−1.25;0.20 mm≤d9≤0.30 mm.
14. The camera optical lens as described in claim 1, wherein the sixth lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.84≤f6/f≤7.29;−29.36≤(R11+R12)/(R11−R12)≤65.28;0.55 mm≤d11≤1.97 mm; wheref: the focal length of the camera optical lens;f6: the focal length of the sixth lens;R11: the curvature radius of the object side surface of the sixth lens;R12: the curvature radius of the image side surface of the sixth lens;d11: the thickness on-axis of the sixth lens.
15. The camera optical lens as described in claim 14 further satisfying the following conditions: 1.35≤f6/f≤5.83;−18.35≤(R11+R12)/(R11−R12)≤52.22;0.89≤d11≤1.57 mm.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.53≤f12/f≤1.83; wheref12: the combined focal length of the first lens and the second lens;f: the focal length of the camera optical lens.
17. The camera optical lens as described in claim 16 further satisfying the following conditions: 0.85≤f12/f≤1.46.
18. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.07 mm.
19. The camera optical lens as described in claim 18, wherein the total optical length TTL of the camera optical lens is less than or equal to 5.80 mm.
20. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.06.
21. The camera optical lens as described in claim 20, wherein the aperture F number of the camera optical lens is less than or equal to 2.02.

Priority Claims (2)

Number	Date	Country	Kind
2018 1 0203896	Mar 2018	CN	national
2018 1 0203897	Mar 2018	CN	national

US Referenced Citations (2)

Number	Name	Date	Kind
5926321	Shikama	Jul 1999	A
20160085055	Asami	Mar 2016	A1

Related Publications (1)

	Number	Date	Country
	20190285855 A1	Sep 2019	US

Camera optical lens

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

Field of Search

US

CPC

International Classifications

Term Extension

Abstract

Description

Claims

Priority Claims (2)

US Referenced Citations (2)

Related Publications (1)