Camera Optical Lens

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201810388549.0 and Ser. No. 201810388528.9 filed on Apr. 26, 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 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 glass 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.

The second lens L2 has a positive refractive power, and the third lens L3 has a negative 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 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, 0.963≤f1/f≤7.641.

The refractive power 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 power of the first lens L1, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.705≤n1≤2.150.

The refractive power of the third lens L3 is defined as n3. Here the following condition should 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, 1.705≤n3≤2.150.

The thickness on-axis of the second lens L2 is defined as d3, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.08≤d3/TTL≤0.1 should be satisfied. This condition fixes the ratio between the thickness on-axis of the second lens L2 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.081≤d3/TTL≤0.148 shall be satisfied.

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

In this embodiment, the 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: −62.15≤(R1+R2)/(R1−R2)≤−3.06, by which, the shape of the first lens L1 can be reasonably controlled and it is effectively for correcting spherical aberration of the camera optical lens. Preferably, the condition −38.84≤(R1+R2)/(R1−R2)≤−3.83 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.03≤d1/TTL≤0.12 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.05≤d1/TTL≤0.10 shall be satisfied.

In this embodiment, the second lens L2 has 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: 0.81≤f2/f≤4.79. 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 1.30≤f2/f≤3.83 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: −3.02≤(R3+R4)/(R3−R4)≤−0.93, which fixes the shape of the second lens L2 and when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like chromatic aberration of the on-axis is difficult to be corrected. Preferably, the following condition shall be satisfied, −1.89≤(R3+R4)/(R3−R4)≤−1.16.

In this embodiment, the third lens L3 has 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 third lens L3 is f3. The following condition should be satisfied: −4.54≤f3/f≤−0.92, by which, the field curvature of the system then can be reasonably and effectively balanced, so that the image quality can be effectively improved. Preferably, the condition −2.84≤f3/f≤−1.14 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: 1.21≤(R5+R6)/(R5−R6)≤4.64, by which, the shape of the third lens L3 can be effectively controlled, it 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, 1.93≤(R5+R6)/(R5−R6)≤3.71.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.04≤d5/TTL≤0.13 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.07≤d5/TTL≤0.10 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a convex object side surface to the proximal axis 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: 0.85≤f4/f≤2.91. When the condition is satisfied, the positive refractive power of the fourth lens L4 is distributed reasonably, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.36≤f4/f≤2.33 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: −1.17≤(R7+R8)/(R7−R8)≤−0.11, by which, the shape of the fourth lens L4 is fixed, further, when 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 following condition shall be satisfied, −0.73≤(R7+R8)/(R7−R8)≤−0.14.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.03≤d7/TTL≤0.12 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.05≤d7/TTL≤0.09 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with a concave object side surface relative to the proximal axis 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: −11.90≤f5/f≤−1.50, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −7.44≤f5/f≤−1.88 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: −8.93≤(R9+R10)/(R9−R10)≤−1.57, by which, the shape of the fifth lens L5 is fixed, further, when 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 following condition shall be satisfied, −5.58≤(R9+R10)/(R9−R10)≤−1.97.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.02≤d9/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≤d9/TTL≤0.08 shall be satisfied.

In this embodiment, the sixth lens L6 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 sixth lens L6 is f6. The following condition should be satisfied: 0.95≤f6/f≤5.60. When the condition is satisfied, the positive refractive power of the sixth lens L6 is distributed reasonably, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.52≤f6/f≤4.48 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: 13.04≤(R11+R12)/(R11−R12)≤189, by which, the shape of the sixth lens L6 is fixed, further, when 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 following condition shall be satisfied, 20.86≤(R11+R12)/(R11−R12)≤151.20.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.07≤d11/TTL≤0.24 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.12≤d11/TTL≤0.19 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: 0.51≤f12/f≤1.96, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for maintaining camera lens miniaturization characteristics. Preferably, the condition 0.81≤f12/f≤1.56 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.96 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 5.69 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 1.96. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 1.92.

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 =
−0.299

R1
2.000
d1 =
0.431
nd1
1.7087
ν1
70.00

R2
3.112
d2 =
0.116

R3
6.215
d3 =
0.497
nd2
1.5894
ν2
70.00

R4
38.087
d4 =
0.038

R5
7.080
d5 =
0.457
nd3
1.7930
ν3
29.55

R6
2.931
d6 =
0.207

R7
8.018
d7 =
0.384
nd4
1.6448
ν4
70.00

R8
−11.119
d8 =
0.440

R9
−3.610
d9 =
0.356
nd5
1.5112
ν5
40.00

R10
−7.295
d10 =
0.247

R11
1.292
d11 =
0.789
nd6
1.5371
ν6
40.00

R12
1.196
d12 =
0.609

R13
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R14
∞
d14 =
0.605

Where:

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

S1: Aperture;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

nd: The refractive power of the d line;

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

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

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

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

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

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

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

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

vg: The abbe number of the optical filter GF.

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

TABLE 2

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−1.3041E−01
−0.011551766
0.006312905
−0.012856115
0.014516885
−0.009712301
0.003974685
−0.001077811

R2
3.3466E+00
−0.023617452
−0.046996642
0.039480026
0.006617722
−0.012903405
0.003413544
−0.001653825

R3
7.3279E+00
0.021930122
−0.034852294
0.006396505
0.043588142
−0.024223254
−0.001010027
−2.01988E−05

R4
−1.0692E+03
−0.016546152
0.013802686
−0.12661605
0.074844564
0.014820738
−0.014801058
0.000213444

R5
1.6202E+01
−0.10981626
0.004981306
−0.037701143
−0.032440329
0.086490977
−0.031245398
0.000273105

R6
−1.7504E+01
−0.009325327
0.03506024
−0.13274647
0.1949593
−0.12979639
0.032856749
0.000725347

R7
−6.3207E+01
−0.024208796
−0.005590425
0.068145361
−0.061577835
−0.002828474
0.026847947
−0.010299911

R8
5.5736E+01
−0.01707267
−0.074423989
0.12767397
−0.097311529
0.04166134
−0.007301194
−0.000160928

R9
−5.3334E+01
0.10069146
−0.29434602
0.39506429
−0.43802289
0.30501015
−0.11608906
0.01800371

R10
1.0389E+01
−0.11205699
0.20815802
−0.26258875
0.1746396
−0.06516633
1.27E−02
−9.79E−04

R11
−7.0389E+00
−0.11205699
0.029244652
−0.003473537
4.14356E−05
4.62E−05
2.66E−06
−1.04E−06

R12
−4.6847E+00
−0.12739673
0.017568946
−0.002727595
0.000179707
2.34E−06
−7.32E−07
1.49E−08

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

IH: Image height

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

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

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

TABLE 3

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1

P1R2
1
1.095

P2R1
1
1.055

P2R2
1
0.325

P3R1
3
0.345
1.015
1.225

P3R2

P4R1
1
0.945

P4R2
2
1.095
1.215

P5R1
1
1.405

P5R2
1
1.625

P6R1
3
0.485
1.845
2.205

P6R2
1
0.645

TABLE 4

Arrest point number
Arrest point position 1

P1R1
0

P1R2
0

P2R1
1
1.195

P2R2
1
0.495

P3R1
1
0.565

P3R2
0

P4R1
1
1.135

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.995

P6R2
1
1.475

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 2.2505 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 78.79°, 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 =
−0.262

R1
2.202
d1 =
0.338
nd1
2.0993
ν1
52.20

R2
3.021
d2 =
0.151

R3
6.988
d3 =
0.436
nd2
1.6405
ν2
70.00

R4
34.413
d4 =
0.040

R5
6.822
d5 =
0.451
nd3
2.0995
ν3
25.96

R6
3.198
d6 =
0.183

R7
6.886
d7 =
0.423
nd4
1.5058
ν4
70.00

R8
−10.424
d8 =
0.382

R9
−4.697
d9 =
0.364
nd5
1.5309
ν5
40.00

R10
−7.407
d10 =
0.265

R11
1.461
d11 =
0.860
nd6
1.5102
ν6
40.00

R12
1.432383
d12 =
0.632

R13
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R14
∞
d14 =
0.628

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
−1.3448E−01
−0.011767943
0.00652174
−0.012664655
0.014597614
−0.009707527
0.00393902
−0.001127184

R2
3.3786E+00
−0.021868146
−0.047849718
0.03826495
0.005905192
−0.013079166
0.003449834
−0.001635597

R3
8.2553E+00
0.021639058
−0.0321509
0.009932722
0.045122295
−0.02426153
−0.001219209
−1.74873E−05

R4
6.7422E+02
−0.006398351
0.02395516
−0.12192885
0.075865978
0.014680163
−0.015185442
−0.000183949

R5
2.5837E+01
−0.087314284
0.017151
−0.039750514
−0.034879448
0.085279985
−0.031483742
0.000300423

R6
−1.9122E+01
−0.006529701
0.039790744
−0.13836291
0.19435653
−0.12802947
0.033920606
0.000599244

R7
−5.8236E+01
−0.020088024
−0.00202601
0.069304361
−0.061953133
−0.003670941
0.026395449
−0.009918675

R8
5.0878E+01
−0.017172625
−0.073916747
0.12851821
−0.09665366
0.041938735
−0.007322477
−0.000299988

R9
−8.3651E+01
0.10029073
−0.29217158
0.39699914
−0.43790792
0.30492658
−0.11615682
0.017962773

R10
7.0843E+00
−0.11401908
0.20941133
−0.26321925
0.17454779
−0.065165747
1.27E−02
−9.75E−04

R11
−7.5104E+00
−0.11401908
0.029505315
−0.00346471
3.97882E−05
4.54E−05
2.45E−06
−1.09E−06

R12
−4.4160E+00
−0.1237629
0.018166893
−0.002748508
0.000177673
2.19E−06
−7.33E−07
1.69E−08

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

TABLE 7

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
1
1.145

P1R2
1
1.085

P2R1
1
1.095

P2R2
1
0.465

P3R1
2
0.415
0.975

P3R2
0

P4R1
1
0.995

P4R2
2
1.025
1.225

P5R1
1
1.415

P5R2
1
1.605

P6R1
3
0.495
1.815
2.125

P6R2
1
0.675

TABLE 8

Arrest

point number
Arrest point position 1
Arrest point position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
1
0.645

P3R1
2
0.685
1.125

P3R2
0

P4R1
1
1.165

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.995

P6R2
1
1.475

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 2.2438 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 78.96°, 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 =
−0.192

R1
2.590
d1 =
0.324
nd1
1.9719
ν1
30.00

R2
2.762
d2 =
0.051

R3
3.489
d3 =
0.521
nd2
1.6073
ν2
70.00

R4
20.846
d4 =
0.038

R5
6.018
d5 =
0.469
nd3
1.7087
ν3
23.31

R6
3.079
d6 =
0.198

R7
6.830
d7 =
0.352
nd4
1.6861
ν4
70.00

R8
−26.276
d8 =
0.522

R9
−3.156
d9 =
0.254
nd5
1.5721
ν5
40.00

R10
−7.791
d10 =
0.327

R11
1.176
d11 =
0.870
nd6
1.5729
ν6
54.53

R12
1.157247
d12 =
0.644

R13
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R14
∞
d14 =
0.640

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
−4.4970E−01
−0.013047045
0.004392697
−0.013740287
0.01416535
−0.00982488
0.003994769
−0.000916566

R2
3.2375E+00
−0.026447871
−0.047561772
0.03644208
0.003760569
−0.015016975
0.00306664
−0.00111801

R3
5.3512E+00
0.020047575
−0.042082317
0.000465405
0.043259206
−0.022745223
−0.000374604
−0.000728711

R4
2.4229E+02
−0.025331207
0.005308792
−0.12023667
0.079930629
0.01648271
−0.014858375
−0.000393874

R5
1.8175E+01
−0.10501715
0.010160363
−0.039618901
−0.034682646
0.085886388
−0.030930306
0.000860372

R6
−2.4416E+01
0.000663761
0.035287739
−0.14655397
0.19746275
−0.12650644
0.032580052
−0.001116377

R7
−1.0106E+02
−0.025402862
−0.005230854
0.068701669
−0.060287004
−0.002289212
0.026561733
−0.010518298

R8
5.4202E+00
−0.011561624
−0.073364736
0.12873958
−0.096625278
0.041548075
−0.007573897
−0.000288794

R9
−3.8168E+01
0.093407949
−0.29740442
0.39736016
−0.43635572
0.30544698
−0.11617745
0.017834403

R10
1.1469E+01
−0.14311083
0.2105844
−0.26184248
0.17487262
−0.065061666
1.27E−02
−9.60E−04

R11
−4.9394E+00
−0.14311083
0.028841457
−0.003562479
3.21474E−05
4.50E−05
2.58E−06
−1.01E−06

R12
−3.7839E+00
−0.12079599
0.017486438
−0.00270374
0.00017721
2.19E−06
−7.36E−07
1.61E−08

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

TABLE 11

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
1
1.075

P1R2
1
1.035

P2R1
1
1.075

P2R2
3
0.375
1.025
1.185

P3R1
2
0.385
0.995

P3R2
2
0.735
1.195

P4R1
1
1.005

P4R2
2
0.905
1.215

P5R1
1
1.415

P5R2
1
1.425

P6R1
3
0.535
1.955
2.085

P6R2
1
0.705

TABLE 12

Arrest

point number
Arrest point position 1
Arrest point position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
1
0.565

P3R1
2
0.645
1.145

P3R2
0

P4R1
1
1.155

P4R2
0

P5R1
0

P5R2
0

P6R1
1
1.135

P6R2
1
1.685

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 2.2093 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 79.84°, 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
4.276
4.263
4.198

f1
6.802
6.077
22.166

f2
12.528
13.605
6.822

f3
−6.631
−5.856
−9.527

f4
7.282
8.265
7.935

f5
−14.451
−25.365
−9.460

f6
15.964
15.699
7.964

f12
4.565
4.326
5.472

(R1 + R2)/(R1 − R2)
−4.595
−6.378
−31.073

(R3 + R4)/(R3 − R4)
−1.390
−1.510
−1.402

(R5 + R6)/(R5 − R6)
2.413
2.765
3.096

(R7 + R8)/(R7 − R8)
−0.162
−0.204
−0.587

(R9 + R10)/
−2.959
−4.467
−2.362

(R9 − R10)

(R11 + R12)/
26.071
99.690
126.000

(R11 − R12)

f1/f
1.591
1.425
5.281

f2/f
2.930
3.191
1.625

f3/f
−1.551E
−1.374
−2.270

f4/f
1.703
1.939
1.890

f5/f
−3.379
−5.950
−2.254

f6/f
3.733
3.682
1.897

f12/f
1.068
1.015
1.304

d1
0.431
0.338
0.324

d3
0.497
0.436
0.521

d5
0.457
0.451
0.469

d7
0.384
0.423
0.352

d9
0.356
0.364
0.254

d11
0.789
0.860
0.870

Fno
1.900
1.900
1.900

TTL
5.386
5.363
5.420

d1/TTL
0.080
0.063
0.060

d3/TTL
0.092
0.081
0.096

d5/TTL
0.085
0.084
0.087

d7/TTL
0.071
0.079
0.065

d9/TTL
0.066
0.068
0.047

d11/TTL
0.146
0.160
0.160

n1
1.7087
2.0993
1.9719

n2
1.5894
1.6405
1.6073

n3
1.7930
2.0995
1.7087

n4
1.6448
1.5058
1.6861

n5
1.5112
1.5309
1.5721

n6
1.5371
1.5102
1.5729

v1
70.0000
52.2002
29.9969

v2
70.0001
70.0002
70.0004

v3
29.5473
25.9577
23.3052

v4
70.0005
70.0001
70.0005

v5
40.0004
40.0010
40.0004

v6
39.9994
39.9992
54.5315

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 negative refractive power, 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≤n1≤2.2;1.7≤n3≤2.2;0.08≤d3/TTL≤0.2; wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n1: the refractive power of the first lens;n3: the refractive power of the third lens;d3: the thickness on-axis of the second 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 glass 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: 0.963≤f1/f≤7.641;1.705≤n1≤2.150;1.705≤n3≤2.150;0.081≤d3/TTL≤0.148.
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: −62.15≤(R1+R2)/(R1−R2)≤−3.06;0.03≤d1/TTL≤0.12; 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: −38.84≤(R1+R2)/(R1−R2)≤−3.83;0.05≤d1/TTL≤0.10.
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: 0.81≤f2/f≤4.79;−3.02≤(R3+R4)/(R3−R4)≤−0.93; 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.
7. The camera optical lens as described in claim 6 further satisfying the following conditions: 1.30≤f2/f≤3.83;−1.89≤(R3+R4)/(R3−R4)≤−1.16.
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; the camera optical lens further satisfies the following conditions: −4.54≤f3/f≤−0.92;1.21≤(R5+R6)/(R5−R6)≤4.64;0.04≤d5/TTL≤0.13; 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: −2.84≤f3/f≤−1.14;1.93≤(R5+R6)/(R5−R6)≤3.71;0.07≤d5/TTL≤0.10.
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: 0.85≤f4/f≤2.91;−1.17≤(R7+R8)/(R7−R8)≤−0.110.03≤d7/TTL≤0.12; 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: 1.36≤f4/f≤2.33;−0.73≤(R7+R8)/(R7−R8)≤−0.14;0.05≤d7/TTL≤0.09.
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: −11.90≤f5/f≤−1.50;−8.93≤(R9+R10)/(R9−R10)≤−1.57;0.02≤d9/TTL≤0.10; 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: −7.44≤f5/f≤−1.88;−5.58≤(R9+R10)/(R9−R10)≤−1.97;0.04≤d9/TTL≤0.08.
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: 0.95≤f6/f≤5.60;13.04≤(R11+R12)/(R11−R12)≤189.00;0.07≤d11/TTL≤0.24; 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: 1.52≤f6/f≤4.48;20.86≤(R11+R12)/(R11−R12)≤151.20;0.12≤d11/TTL≤0.19.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.51≤f12/f≤1.96; 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: 0.81≤f12/f≤1.56.
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 5.96 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 5.69 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 1.96.
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 1.92.

Priority Claims (2)

Number	Date	Country	Kind
201810388528.9	Apr 2018	CN	national
201810388549.0	Apr 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)