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 L 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 plastic material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of glass 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: 0.5≤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, 1.017≤f1/f≤9.815.

The refractive power of the second lens L2 is defined as n2. Here the following condition should satisfied: 1.7≤n2≤2.2. This condition fixes the refractive power of the second lens L2, 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, 1.703≤n2≤2.148.

The refractive power of the sixth lens L6 is defined as n6. Here the following condition should satisfied: 1.7≤n6≤2.2. This condition fixes the refractive power of the sixth lens L6, 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, 1.716≤n6≤2.147.

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 L 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: −34.67≤(R1+R2)/(R1−R2)≤−2.58, which fixes the shape of the first lens L and can effectively correct aberration of the camera optical lens. Preferably, the condition −21.67≤(R1+R2)/(R1−R2)≤−3.23 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.02≤d1/TTL≤0.10 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04≤d1/TTL≤0.08 shall be satisfied.

In this embodiment, the second lens L2 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 second lens L2 is f2. The following condition should be satisfied: 0.50≤f2/f≤2.32. 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 0.79≤f2/f≤1.85 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: −3.86≤(R3+R4)/(R3−R4)≤−0.90, which fixes the shaping of the second lens L2. 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, −2.41≤(R3+R4)/(R3−R4)≤−1.13.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.05≤d3/TTL≤0.18 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.08≤d3/TTL≤0.15 shall be satisfied.

In this embodiment, the third lens L3 has a negative 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 third lens L3 is f3. The following condition should be satisfied: −4.52≤f3/f≤−0.90, the field curvature of the system can be reasonably and effectively balanced for further improving the image quality. Preferably, the condition −2.82≤f3/f≤−1.12 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: 1.04≤(R5+R6)/(R5−R6)≤5.20, 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, 1.66≤(R5+R6)/(R5−R6)≤4.16.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.02≤d5/TTL≤0.07 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.03≤d5/TTL≤0.05 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a convex 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: 1.31≤f4/f≤4.35, 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 2.10≤f4/f≤3.48 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)≤−0.47, 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, −0.95≤(R7+R8)/(R7−R8)≤−0.59.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.05≤d7/TTL≤0.20 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.09≤d7/TTL≤0.16 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: −8.72≤f5/f≤−1.53, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −5.45≤f5/f≤−1.92 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: −8.40≤(R9+R10)/(R9−R10)≤−1.71, 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, −5.25≤(R9+R10)/(R9−R10)≤−2.14.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.04≤d9/TTL≤0.14 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.07≤d9/TTL≤0.11 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: 3.02≤f6/f≤12.59, 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 4.83≤f6/f≤10.07 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: 3.60≤(R11+R12)/(R11−R12)≤14.02, 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, 5.75≤(R11+R12)/(R11−R12)≤11.22.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.09≤d11/TTL≤0.29 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.14≤d11/TTL≤0.23 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: 0.40≤f12/f≤1.64, 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 0.64≤f12/f≤1.31 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.73 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 5.47 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
νd

S1
∞
d0=
−0.123

R1
2.433
d1=
0.233
nd1
1.581
ν1
25.70

R2
3.054
d2=
0.048

R3
3.132
d3=
0.623
nd2
1.710
ν2
66.11

R4
20.783
d4=
0.064

R5
4.454
d5=
0.227
nd3
1.680
ν3
21.00

R6
2.460
d6=
0.191

R7
5.640
d7=
0.539
nd4
1.502
ν4
51.94

R8
−38.640
d8=
0.462

R9
−3.959
d9=
0.456
nd5
1.680
ν5
70.00

R10
−6.436
d10=
0.087

R11
1.617
d11=
0.979
nd6
1.737
ν6
52.95

R12
1.305
d12=
0.469

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

R14
∞
d14=
0.463

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 in the embodiment 1 of the present invention.

TABLE 2

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−7.4378E−01
−0.028744251
−0.007976134
−0.017581216
0.024299338
−0.000739365
−0.00411051
−0.005768169

R2
3.9076E+00
−0.016671456
−0.078627621
0.045030835
0.018253863
−0.023301655
−0.031200287
0.008658203

R3
6.9769E+00
0.002566621
−0.040599884
−0.04553605
0.022337696
−0.003426476
0.018687705
−0.056105008

R4
−1.6033E+03
−0.064952264
0.032600386
−0.13122779
0.057455737
0.009164052
−0.013216769
0.000914682

R5
−6.5161E+00
−0.15035834
0.027241343
−0.026088369
−0.032328458
0.084433467
−0.033306159
0.000986861

R6
−1.0146E+01
−0.01066902
0.041460475
−0.13299447
0.20247601
−0.12319024
0.033399735
−0.004198102

R7
−3.5501E+01
0.006308779
−0.01480532
0.066328821
−0.05580043
−0.002300658
0.024894676
−0.009080976

R8
7.6939E+02
−0.018824814
−0.079914251
0.12599476
−0.096652075
0.042863519
−0.006500502
−0.000283038

R9
−6.2992E+01
0.14458085
−0.29584133
0.3940545
−0.43829196
0.30502499
−0.11619251
0.017890848

R10
−4.4292E+00
−0.094407515
0.21110512
−0.26283709
0.17429639
−0.065249712
1.27E−02
−9.78E−04

R11
−1.2175E+01
−0.094407515
0.030894474
−0.00318746
4.87197E−05
4.19E−05
1.46E−06
−9.85E−07

R12
−6.3810E+00
−0.13773148
0.015914592
−0.002683665
0.000183528
2.81E−06
−6.44E−07
−3.28E−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

number
position 1
position 2

P1R1
1
0.865

P1R2
1
0.755

P2R1
1
0.765

P2R2
1
0.225

P3R1
2
0.355
0.995

P3R2
1
1.165

P4R1
1
1.175

P4R2
1
0.985

P5R1
2
0.415
0.565

P5R2
1
1.645

P6R1
2
0.425
1.755

P6R2
1
0.625

TABLE 4

Arrest point
Arrest point

number
position 1

P1R1

P1R2
1
0.975

P2R1
1
0.945

P2R2
1
0.395

P3R1
1
0.615

P3R2

P4R1

P4R2
1
1.185

P5R1

P5R2

P6R1
1
0.845

P6R2
1
1.465

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 1.874 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 86.27°, 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=
−0.109

R1
2.576
d1=
0.265
nd1
1.499
ν1
20.99

R2
2.891
d2=
0.052

R3
3.354
d3=
0.582
nd2
2.095
ν2
44.86

R4
15.659
d4=
0.040

R5
6.145
d5=
0.224
nd3
1.681
ν3
20.99

R6
2.525
d6=
0.191

R7
6.620
d7=
0.701
nd4
1.511
ν4
66.98

R8
−38.875
d8=
0.518

R9
−3.596
d9=
0.475
nd5
1.683
ν5
53.85

R10
−7.046
d10=
0.104

R11
1.673
d11=
0.941
nd6
2.094
ν6
70.00

R12
1.264
d12=
0.457

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

R14
∞
d14=
0.451

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
−8.7654E−01
−0.032216742
−0.003447532
−0.020371077
0.019125667
−0.003256952
−0.006486815
−0.005840643

R2
3.0532E+00
−0.026488941
−0.090905954
0.040170169
0.016081021
−0.026863176
−0.037311446
0.005066888

R3
7.2823E+00
−0.002259945
−0.035559845
−0.0433159
0.023079837
0.0001016
0.022776261
−0.050650832

R4
−1.4143E+02
−0.05058577
0.034546624
−0.13104992
0.05850713
0.009900028
−0.012021867
0.001170488

R5
−1.6895E+01
−0.15757974
0.023126637
−0.025721241
−0.031648984
0.085063406
−0.032762898
0.001226985

R6
−1.1229E+01
−0.004998359
0.053379472
−0.13037082
0.20255384
−0.12332903
0.033290346
−0.004331161

R7
−1.1121E+01
0.008381351
−0.017391429
0.066331464
−0.05401579
−0.002115351
0.025286249
−0.008887919

R8
7.6841E+02
−0.023177132
−0.080788062
0.12641886
−0.095869889
0.043201987
−0.006414408
−0.000323563

R9
−8.5913E+01
0.15547699
−0.29753182
0.39285589
−0.43832996
0.30517488
−0.11624145
0.017860202

R10
−2.0222E+00
−0.095147317
0.21117337
−0.26282741
0.17428489
−0.065257896
1.27E−02
−9.80E−04

R11
−1.3595E+01
−0.095147317
0.03084478
−0.003195321
4.54416E−05
4.13E−05
1.33E−06
−9.56E−07

R12
−9.7890E+00
−0.13785002
0.015923147
−0.002681823
0.000183661
2.85E−06
−6.27E−07
−9.73E−10

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
1
0.765

P1R2
1
0.655

P2R1
1
0.755

P2R2
1
0.325

P3R1
3
0.295
0.995
1.265

P3R2
1
1.195

P4R1
1
1.255

P4R2
1
0.975

P5R1
3
0.335
0.645
1.435

P5R2
1
1.675

P6R1
3
0.415
1.775
2.145

P6R2
1
0.545

TABLE 8

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1

P1R2
1
0.895

P2R1
1
0.955

P2R2
1
0.525

P3R1
2
0.505
1.195

P3R2

P4R1

P4R2
1
1.165

P5R1

P5R2

P6R1
1
0.825

P6R2
1
1.315

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 1.918 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 84.94°, 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=
−0.238

R1
1.977
d1=
0.356
nd1
1.673
ν1
63.02

R2
3.354
d2=
0.084

R3
3.244
d3=
0.523
nd2
1.706
ν2
62.64

R4
10.223
d4=
0.034

R5
7.101
d5=
0.203
nd3
1.685
ν3
28.37

R6
2.488
d6=
0.217

R7
6.428
d7=
0.603
nd4
1.490
ν4
70.03

R8
−47.177
d8=
0.438

R9
−3.585
d9=
0.462
nd5
1.686
ν5
37.55

R10
−8.154
d10=
0.101

R11
1.649
d11=
0.989
nd6
1.732
ν6
70.03

R12
1.315
d12=
0.470

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

R14
∞
d14=
0.464

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
−1.4490E−01
−0.021545899
0.004249236
−0.019247581
0.020837069
−0.001740794
−0.003632055
−0.003524928

R2
4.4950E+00
−0.011872005
−0.083289491
0.049675248
0.02283193
−0.020507199
−0.029549671
0.009713371

R3
6.9126E+00
−0.006405718
−0.029071356
−0.043027425
0.025026285
0.001705855
0.024809027
−0.04999328

R4
−1.9612E+02
−0.054780405
0.037936654
−0.13056248
0.056693915
0.009325605
−0.01250318
0.00157203

R5
3.2940E+00
−0.14529749
0.027090395
−0.024003449
−0.030637091
0.085122958
−0.033079073
0.001014788

R6
−1.1870E+01
0.007867602
0.057145382
−0.13124256
0.20177758
−0.12346281
0.033662795
−0.004040816

R7
−3.2825E+01
0.004041949
−0.017778739
0.065865208
−0.049466658
−0.000559288
0.024509703
−0.010605482

R8
3.5664E+02
−0.017014021
−0.077120584
0.12645086
−0.096654055
0.042730336
−0.006673572
−0.000363015

R9
−4.8480E+01
0.14049281
−0.29671582
0.39312886
−0.43819874
0.30508803
−0.11623686
0.017950179

R10
−2.7585E+00
−0.094121213
0.21133458
−0.26290837
0.17426183
−0.065260646
1.27E−02
−9.79E−04

R11
−1.3148E+01
−0.094121213
0.030857289
−0.003202236
4.52368E−05
4.15E−05
1.49E−06
−9.43E−07

R12
−6.6052E+00
−0.1377783
0.015870247
−0.002690027
0.000182443
2.75E−06
−6.48E−07
−3.80E−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
1
0.975

P1R2
1
0.775

P2R1
1
0.795

P2R2
1
0.345

P3R1
2
0.295
0.955

P3R2

P4R1
1
1.135

P4R2
1
0.945

P5R1

P5R2
1
1.675

P6R1
3
0.415
1.765
2.175

P6R2
1
0.625

TABLE 12

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1

P1R2
1
0.995

P2R1
1
0.975

P2R2
1
0.575

P3R1
2
0.505
1.125

P3R2

P4R1

P4R2
1
1.155

P5R1

P5R2

P6R1
1
0.835

P6R2
1
1.435

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 2.114 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 79.42°, 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
3.748
3.837
4.229

f1
18.116
36.947
6.483

f2
5.119
3.805
6.529

f3
−8.467
−6.457
−5.694

f4
9.838
11.121
11.591

f5
−16.351
−11.394
−9.727

f6
27.918
23.186
35.491

f12
4.101
3.558
3.360

(R1 + R2)/(R1 − R2)
−8.848
−17.336
−3.871

(R3 + R4)/(R3 − R4)
−1.355
−1.545
−1.929

(R5 + R6)/(R5 − R6)
3.466
2.396
2.079

(R7 + R8)/(R7 − R8)
−0.745
−0.709
−0.760

(R9 + R10)/
−4.198
−3.085
−2.569

(R9 − R10)

(R11 + R12)/
9.349
7.190
8.865

(R11 − R12)

f1/f
4.833
9.630
1.533

f2/f
1.366
0.992
1.544

f3/f
−2.259
−1.683
−1.347

f4/f
2.625
2.899
2.741

f5/f
−4.362
−2.970
−2.300

f6/f
7.448
6.044
8.393

f12/f
1.094
0.927
0.795

d1
0.233
0.265
0.356

d3
0.623
0.582
0.523

d5
0.227
0.224
0.203

d7
0.539
0.701
0.603

d9
0.456
0.475
0.462

d11
0.979
0.941
0.989

Fno
2.000
2.000
2.000

TTL
5.051
5.211
5.154

d1/TTL
0.046
0.051
0.069

d3/TTL
0.123
0.112
0.101

d5/TTL
0.045
0.043
0.039

d7/TTL
0.107
0.135
0.117

d9/TTL
0.090
0.091
0.090

d11/TTL
0.194
0.181
0.192

n1
1.581
1.499
1.673

n2
1.710
2.095
1.706

n3
1.680
1.681
1.685

n4
1.502
1.511
1.490

n5
1.680
1.683
1.686

n6
1.737
2.094
1.732

v1
25.704
20.990
63.020

v2
66.106
44.858
62.638

v3
21.000
20.990
28.372

v4
51.939
66.975
70.031

v5
70.000
53.847
37.550

v6
52.955
70.002
70.031

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, a third lens, a fourth lens, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10;1.7≤n2≤2.2;1.7≤n6≤2.2;wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n2: the refractive power of the second lens;n6: the refractive power of the sixth lens.
2. The camera optical lens as described in claim 1 further satisfying the following conditions: 1.017≤f1/f≤9.815;1.703≤n2≤2.148;1.716≤n6≤2.147.
3. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of glass 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 glass material.
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; the camera optical lens further satisfies the following conditions: −34.67≤(R1+R2)/(R1−R2)≤−2.58;0.02≤d1/TTL≤0.10; 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;TTL: the total optical length of the camera optical lens.
5. The camera optical lens as described in claim 4 further satisfying the following conditions: −21.67≤(R1+R2)/(R1−R2)≤−3.23;0.04≤d1/TTL≤0.08.
6. The camera optical lens as described in claim 1, wherein the second lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.50≤f2/f≤2.32;−3.86≤(R3+R4)/(R3−R4)≤−0.90;0.05≤d3/TTL≤0.18; 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;TTL: the total optical length of the camera optical lens.
7. The camera optical lens as described in claim 6 further satisfying the following conditions: 0.79≤f2/f≤1.85;−2.41≤(R3+R4)/(R3−R4)≤−1.13;0.08≤d3/TTL≤0.15.
8. The camera optical lens as described in claim 1, wherein the third lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: −4.52≤f3/f≤−0.90;1.04≤(R5+R6)/(R5−R6)≤5.20;0.02≤d5/TTL≤0.07; wheref: the focal length of the camera optical lens;f3: the focal length of the third lens;R5: the curvature radius of the object side surface of the third lens;R6: the curvature radius of the image side surface of the third lens;d5: the thickness on-axis of the third lens;TTL: the total optical length of the camera optical lens.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: −2.82≤f3/f≤−1.12;1.66≤(R5+R6)/(R5−R6)≤4.16;0.03≤d5/TTL≤0.05.
10. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a convex object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 1.31≤f4/f≤4.35;−1.52≤(R7+R8)/(R7−R8)≤−0.47;0.05≤d7/TTL≤0.20; 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;TTL: the total optical length of the camera optical lens.
11. The camera optical lens as described in claim 10 further satisfying the following conditions: 2.10≤f4/f≤3.48;−0.95≤(R7+R8)/(R7−R8)≤−0.59;0.09≤d7/TTL≤0.16.
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; the camera optical lens further satisfies the following conditions: −8.72≤f5/f≤−1.53;−8.40≤(R9+R10)/(R9−R10)≤−1.71;0.04≤d9/TTL≤0.14; 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;TTL: the total optical length of the camera optical lens.
13. The camera optical lens as described in claim 12 further satisfying the following conditions: −5.45≤f5/f≤−1.92;−5.25≤(R9+R10)/(R9−R10)≤−2.14;0.07≤d9/TTL≤0.11.
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; the camera optical lens further satisfies the following conditions: 3.02≤f6/f≤12.59;3.60≤(R11+R12)/(R11−R12)≤14.02;0.09≤d11/TTL≤0.29; 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;TTL: the total optical length of the camera optical lens.
15. The camera optical lens as described in claim 14 further satisfying the following conditions: 4.83≤f6/f≤10.07;5.75≤(R11+R12)/(R11−R12)≤11.22;0.14≤d11/TTL≤0.23.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.40≤f12/f≤1.64; 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: 0.64≤f12/f≤1.31.
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 5.73 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 5.47 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
201810923352.2	Aug 2018	CN	national
201810924578.4	Aug 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)