Camera Optical Lens

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201810203716.x and Ser. No. 201810203808.8 filed on Mar. 13, 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

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 to 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 plastic material, the third lens L3 is made of glass material, the fourth lens L4 is made of glass material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of plastic material.

The second lens L2 has a positive refractive power, and the third lens L3 has a positive refractive power.

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: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤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, and it is also unfavorable for wide-angle development of lens. 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 ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.55≤f1/f≤9.11.

The refractive power of the third lens L3 is defined as n3. Here the following condition should be satisfied: 1.7≤n3≤2.2. This condition fixes the refractive power of the third lens L3, 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, 1.71≤n3≤2.15.

The refractive power of the fourth lens L4 is defined as n4. Here the following condition should be 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, 1.7≤n4≤2.1.

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 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: −495.58≤(R1+R2)/(R1−R2)≤−6.36, 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 −309.73≤(R1+R2)/(R1−R2)≤−7.95 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.16≤d1≤0.56 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.26≤d1≤0.44 shall be satisfied.

In this embodiment, the second lens L2 has 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 second lens L2 is f2. The following condition should be satisfied: 0.6≤f2/f≤3.65. 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 0.96≤f2/f≤2.92 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: −5.63≤(R3+R4)/(R3−R4)≤−1.29, 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, −3.52≤(R3+R4)/(R3−R4)≤−1.61.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.21≤d3≤0.86 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.34≤d3≤0.69 shall be satisfied.

In this embodiment, the third lens L3 has a convex object side surface and a concave image side surface relative to the proximal axis.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.1≤d5≤0.37 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.16≤d5≤0.3 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: 0.36≤f4/f≤2.01, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.58≤f4/f≤1.61 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: 1.66≤(R7+R8)/(R7−R8)≤6.93, 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, 2.65≤(R7+R8)/(R7−R8)≤5.54.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.25≤d7≤0.79 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.4≤d7≤0.63 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: −2.18≤f5/f≤−0.52, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.36≤f5/f≤−0.65 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: −3.59≤(R9+R10)/(R9−R10)≤−0.87, 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, −2.24≤(R9+R10)/(R9−R10)≤−1.09.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.12≤d9≤0.39 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.2≤d9≤0.31 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: 1.16≤f6/f≤6.33, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.85≤f6/f≤5.06 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: −543.3≤(R11+R12)/(R11−R12)≤−8.28, 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, −339.56≤(R11+R12)/(R11−R12)≤−10.35.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.41≤d11≤1.84 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.65≤d11≤1.47 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: 0.56≤f12/f≤2.01, 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 0.89≤f12/f≤1.61 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.08 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 5.8 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=
−0.292

R1
1.840
d1=
0.371
nd1
1.6791
v1
56.30

R2
2.253
d2=
0.173

R3
2.549
d3=
0.427
nd2
1.5140
v2
56.80

R4
5.594
d4=
0.343

R5
282.340
d5=
0.218
nd3
1.7293
v3
20.50

R6
282.248
d6=
0.252

R7
−2.820
d7=
0.527
nd4
1.7001
v4
57.21

R8
−1.514
d8=
0.054

R9
−1.725
d9=
0.246
nd5
1.6140
v5
25.60

R10
−9.375
d10=
0.223

R11
1.606
d11=
1.058
nd6
1.5015
v6
38.39

R12
1.877
d12=
0.704

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.683

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

R1
4.7047E−01
−0.016471442
0.00728881
−0.011796018
0.012941522

R2
2.3638E−01
−0.031006922
−0.001842867
0.007230357
−0.002649362

R3
−7.2460E+00
0.003724244
−0.043462758
0.003453493
0.035522641

R4
1.1560E+01
−0.050592522
−0.034780226
−0.037676256
0.059149079

R5
−1.6583E+05
−0.082160918
−0.038701081
−0.063030232
−0.008141922

R6
3.7506E+04
−0.052311871
0.038330167
−0.14116746
0.15286997

R7
3.2064E+00
−0.044884782
0.055972554
0.077571934
−0.056248069

R8
−3.2798E−01
0.013053393
−0.035117881
0.061538955
−0.036875821

R9
−8.8724E+00
0.017537761
−0.20092155
0.36185248
−0.43049886

R10
−8.5430E−01
−0.1641236
0.23673514
−0.25760283
0.17142179

R11
−1.1751E+01
−0.1641236
0.031249738
−0.002283517
−0.000273392

R12
−4.1701E+00
−0.10563077
0.016468626
−0.002975045
0.000318783

Aspherical Surface Index

A12
A14
A16

R1
−0.010074209
0.003081325
−0.000357796

R2
−0.013968306
0.007964928
−0.001529179

R3
−0.07346145
0.032779637
−0.002655984

R4
−0.067448323
0.027661419
−0.001365027

R5
0.027972529
0.003870432
−0.002045385

R6
−0.087043087
0.021048724
−7.69773E−05

R7
−0.012117905
0.020429892
−0.004513464

R8
0.017947332
−0.002980526
−7.37826E−05

R9
0.30193681
−0.11163354
0.016787003

R10
−0.063713951
1.24E−02
−9.90E−04

R11
1.43E−05
7.67E−06
−7.16E−07

R12
−1.76E−05
4.09E−07
−4.55E−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
0.925

P2R1
1
0.675

P2R2
1
0.485

P3R1
2
0.065
1.125

P3R2
2
0.085
1.215

P4R1
2
0.805
1.225

P4R2
1
1.015

P5R1
1
1.325

P5R2
2
1.215
1.535

P6R1
3
0.475
1.455
2.255

P6R2
1
0.765

TABLE 4

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.975

P2R2
1
0.745

P3R1
1
0.105

P3R2
1
0.135

P4R1
0

P4R2
1
1.335

P5R1
0

P5R2
0

P6R1
3
1.045
1.895
2.425

P6R2
1
1.775

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 2.0823 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 80.28°, 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=
−0.265

R1
1.799
d1=
0.345
nd1
1.6547
v1
56.30

R2
2.220
d2=
0.157

R3
2.723
d3=
0.426
nd2
1.5140
v2
56.80

R4
5.724
d4=
0.314

R5
162.738
d5=
0.201
nd3
2.0936
v3
20.50

R6
162.633
d6=
0.280

R7
−2.797
d7=
0.497
nd4
2.0067
v4
50.88

R8
−1.547
d8=
0.086

R9
−1.632
d9=
0.248
nd5
1.6140
v5
25.60

R10
−12.197
d10=
0.318

R11
1.758
d11=
0.812
nd6
1.5082
v6
30.89

R12
2.066151
d12=
0.766

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.745

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
4.4679E−01
−0.017065373
0.00560866
−0.012189906
0.012873564
−0.010146545
0.002961871
−0.000474458

R2
2.0045E−01
−0.030851337
−0.002620374
0.006167964
−0.00318741
−0.01409912
0.008095381
−0.0013635

R3
−7.3923E+00
0.00397757
−0.041898159
0.004093773
0.035611499
−0.073329804
0.032478211
−0.002848081

R4
1.0731E+01
−0.053338848
−0.034055255
−0.038093609
0.058919045
−0.067712198
0.027418049
−0.001586218

R5
−6.2405E+05
−0.076328364
−0.038476621
−0.062.96892
−0.008144922
0.028335177
0.004048542
−0.001921836

R6
1.5489E+04
−0.056239188
0.036913632
−0.14130833
0.15285362
−0.087024958
0.021011508
−9.962E−05

R7
3.1773E+00
−0.045989351
0.057572366
0.078546009
−0.056155537
−0.012181788
0.020409725
−0.004467725

R8
−3.4359E−01
0.017629915
−0.035616404
0.060908764
−0.037151685
0.017895711
−0.002951099
−3.64591E−05

R9
−7.0199E+00
0.02218295
−0.20002816
0.36188294
−0.43023355
0.30196586
−0.11163558
0.016767186

R10
−1.1801E+01
−0.15901181
0.23710253
−0.25793409
0.17127768
−0.063740415
1.24E−02
−9.86E−04

R11
−1.3129E+01
−0.15901181
0.031236768
−0.002266057
−0.000271613
1.44E−05
7.66E−06
−7.22E−07

R12
−6.5177E+00
−0.10649673
0.016622511
−0.002963044
0.000318852
−1.77E−05
4.01E−07
−5.82E−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
0.915

P2R1
1
0.685

P2R2
1
0.465

P3R1
2
0.075
1.115

P3R2
2
0.105
1.215

P4R1
2
0.795
1.235

P4R2
1
1.005

P5R1
1
1.315

P5R2
2
1.195
1.475

P6R1
3
0.465
1.465
2.265

P6R2
1
0.675

TABLE 8

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.975

P2R2
1
0.725

P3R1
1
0.125

P3R2
1
0.165

P4R1
0

P4R2
1
1.325

P5R1
0

P5R2
0

P6R1
3
0.995
1.965
2.415

P6R2
1
1.525

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 1.9828 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 83.06°, it has wide-angle and is to 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=
−0.326

R1
1.759
d1=
0.326
nd1
1.6316
v1
56.30

R2
1.773
d2=
0.086

R3
1.887
d3=
0.575
nd2
1.5140
v2
56.80

R4
5.925
d4=
0.360

R5
207.133
d5=
0.249
nd3
1.72.47
v3
21.19

R6
207.268
d6=
0.176

R7
−2.734
d7=
0.496
nd4
1.7124
v4
65.08

R8
−1.760
d8=
0.194

R9
−2.006
d9=
0.259
nd5
1.6140
v5
25.60

R10
−7.053
d10
0.239

R11
1.956
d11=
1.226
nd6
1.5030
v6
32.49

R12
1.970377
d12
0.575

R13
∞
d13=
0.210
ndg
1.5168
vg
64.17

R14
∞
d14=
0.553

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
4.3313E−01
−0.020614453
0.003785422
−0.010871351
0.01304194
−0.009945532
0.003410373
−0.000483006

R2
−3.0463E−01
−0.047636527
0.006628456
0.011896346
−0.003795214
−0.014423161
0.009633841
0.001390121

R3
−4.9725E+00
0.037476308
−0.033510622
0.004429888
0.039558434
−0.069205911
0.035155557
−0.00211648

R4
2.3022E+01
−0.028969649
−0.02483994
−0.043091495
0.059641979
−0.06607889
0.027419534
−0.003218624

R5
−4.4149E+07
−0.067992469
−0.041152218
−0.06595823
−0.00900772
0.028711287
0.005439468
−0.00127139

R6
−2.1209E+03
−0.043401635
0.041852974
−0.14054493
0.15266933
−0.086424626
0.021053059
−0.00015482

R7
3.2867E+00
−0.014673491
0.051670904
0.077308982
−0.057154094
−0.013540654
0.020129079
−0.003558013

R8
−2.5429E−01
0.012031622
−0.035212249
0.058949226
−0.039093394
0.017592792
−0.003184198
0.000149069

R9
−7.0928E+00
0.031390044
−0.19587102
0.35351464
−0.43023006
0.30251374
−0.11112708
0.016265973

R10
4.4800E+00
−0.16152031
0.24174247
−0.25758352
0.17086647
−0.06380163
1.24E−02
−9.73E−04

R11
−1.4582E+01
−0.16152031
0.031019734
−0.002209852
−0.000271329
1.23E−05
7.47E−06
−6.73E−07

R12
−3.3807E+00
−0.1060721
0.016547598
−0.002995479
0.000313648
−1.74E−05
4.81E−07
−8.34E−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
0

P2R2
2
0.585
1.145

P3R1
2
0.045
1.095

P3R2
2
0.105
1.185

P4R1
2
0.755
1.155

P4R2
1
1.055

P5R1
1
1.425

P5R2
2
1.185
1.535

P6R1
3
0.455
1.465
2.175

P6R2
1
0.815

TABLE 12

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
0

P2R2
1
0.855

P3R1
1
0.085

P3R2
1
0.165

P4R1
0

P4R2
1
1.365

P5R1
0

P5R2
0

P6R1
1
0.955

P6R2
1
1.855

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 2.1379 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 78.8°, 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
Embodiment
Embodiment

1
2
3

f
4.165
3.966
4.276

f1
10.851
10.936
35.200

f2
8.697
9.638
5.140

f3
1.276E+10
2.003E+13
2.472E+05

f4
4.002
2.866
5.725

f5
−3.487
−3.097
−4.657

f6
9.630
12.293
18.031

f12
5.042
5.315
4.774

(R1 + R2)/(R1 − R2)
−9.916
−9.543
−247.788

(R3 + R4)/(R3 − R4)
−2.674
−2.814
−1.935

(R5 + R6)/(R5 − R6)
6140.291
3091.390
−3074.481

(R7 + R8)/(R7 − R8)
3.318
3.474
4.617

(R9 + R10)/(R9 − R10)
−1.451
−1.309
−1.795

(R11 + R12)/(R11 − R12)
−12.871
−12.418
−271.650

f1/f
2.606
2.758
8.232

f2/f
2.088
2.430
1.202

f3/f
3.064E+09
5.051E+12
5.781E+04

f4/f
0.961
0.723
1.339

f5/f
−0.837
−0.781
−1.089

f6/f
2.312
3.100
4.217

f12/f
1.211
1.340
1.116

d1
0.371
0.345
0.326

d3
0.427
0.426
0.575

d5
0.218
0.201
0.249

d7
0.527
0.497
0.496

d9
0.246
0.248
0.259

d11
1.058
0.812
1.226

Fno
2.000
2.000
2.000

TTL
5.489
5.407
5.523

d1/TTL
0.068
0.064
0.059

d3/TTL
0.078
0.079
0.104

d5/TTL
0.040
0.037
0.045

d7/TTL
0.096
0.092
0.090

d9/TTL
0.045
0.046
0.047

d11/TTL
0.193
0.150
0.222

n1
1.6791
1.6547
1.6316

n2
1.5140
1.5140
1.5140

n3
1.7293
2.0936
1.7247

n4
1.7001
2.0067
1.7124

n5
1.6140
1.6140
1.6140

n6
1.5015
1.5082
1.5030

v1
56.3000
56.3000
56.3000

v2
56.8000
56.8000
56.8000

v3
20.4967
20.4983
21.1925

v4
57.2087
50.8812
65.0759

v5
25.6000
25.6000
25.6000

v6
38.3935
30.8948
32.4915

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, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10;1.7≤n3≤2.2;1.7≤n4≤2.2;wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n3: the refractive power of the third lens;n4: the refractive power of the fourth lens.
2. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of glass material, the fourth lens is made of glass 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: 1.55≤f1/f≤9.11;1.71≤n3≤2.15;1.7≤n4≤2.1.
4. The camera optical lens as described in claim 1, wherein first lens has a positive refractive power with a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: −495.58≤(R1+R2)/(R1−R2)≤−6.36;0.16≤d1≤0.56; 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: −309.735(R1+R2)/(R1−R2)≤−7.95;0.26≤d1≤0.44.
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 to the proximal axis; the camera optical lens further satisfies the following conditions: 0.6≤f2/f≤3.65;−5.63≤(R3+R4)/(R3−R4)≤−1.29;0.21≤d3≤0.86; 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: 0.96≤f2/f≤2.92;−3.52≤(R3+R4)/(R3−R4)≤−1.61;0.34≤d3≤0.69.
8. The camera optical lens as described in claim 1, wherein the third lens has a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.1≤d5≤0.37; whered5: the thickness on-axis of the third lens.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: 0.16≤d5≤0.3.
10. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a concave object side surface and a convex image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.36≤f4/f≤2.01;1.66≤(R7+R8)/(R7−R8)≤6.93;0.25≤d7≤0.79; 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: 0.58≤f4/f≤1.61;2.65≤(R7+R8)/(R7−R8)≤5.54;0.4≤d7≤0.63.
12. The camera optical lens as described in claim 1, wherein the fifth lens has a negative refractive power with a concave object side surface and a convex image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: −2.18≤f5/f≤−0.52;−3.59≤(R9+R10)/(R9−R10)≤−0.87;0.12≤d9≤0.39; 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: −1.36≤f5/f≤−0.65;−2.24≤(R9+R10)/(R9−R10)≤−1.09;0.2≤d9≤0.31.
14. The camera optical lens as described in claim 1, wherein the sixth lens has a positive refractive power with a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 1.16≤f6/f≤6.33;−543.3≤(R11+R12)/(R11−R12)≤−8.28;0.41≤d11≤1.84; 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: 1.85≤f6/f≤5.06;−339.56≤(R11+R12)/(R11−R12)≤−10.35;0.65≤d11≤1.47.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.56≤f12/f≤2.01; 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 condition: 0.89≤f12/f≤1.61.
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 6.08 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 5.8 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
201810203716.X	Mar 2018	CN	national
201810203808.8	Mar 2018	CN	national

Camera Optical Lens

Information

Publication Number

Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (2)