Camera Optical Lens

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201810065866.9 and Ser. No. 201810065399.X filed on Jan. 23, 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 Fin.

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

FIG. 4 shows 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 shows the longitudinal aberration of the camera optical lens shown in FIG. 5;

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

FIG. 8 shows a schematic diagram of 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 shows the longitudinal aberration of the camera, optical lens shown in FIG. 9;

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

FIG. 12 shows a schematic diagram of 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 is 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 51, 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 plastic 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.

In this embodiment, the second lens L2 has a positive refractive power. 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 10 further satisfies the following condition: 0.1≤f1/f≤10, which 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, 0.733≤f1/f≤6.478.

The refractive power of the forth 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 forth lens L4, and when the value of the 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, 1.726≤n4≤2.19.

The thickness on-axis of the forth lens L4 is defined as d7, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.01≤d7/TTL≤0.2 should be satisfied. This condition fixes the ratio between the thickness on-axis of the forth lens L4 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.035≤d7/TTL≤0.169 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 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 is following condition: −8.38≤(R1+R2)/(R1−R2)≤−1.88, which fixes the shape of the first lens L1, 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 −5.23≤(R1+R2)/(R1−R2)≤−2.35 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.15≤d1≤0.59 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.23≤d1≤0.48 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: 1.27≤f2/f≤5.06. 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 2.03≤f2/f≤4.05 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: −3.75≤(R3+R4)/(R3−R4)≤−1.11, which fixes the shape of the second lens L2, 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 on-axis Chromatic aberration is difficult to be corrected. Preferably, the following condition shall be satisfied, −2.34≤(R3+R4)/(R3−R4)≤−1.38.

The thickness on-axis of the second lens L2 is defined as d3, The following condition: 0.28≤d3≤0.93 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens, Preferably, the condition 0.45≤d3≤0.74 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 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: −4.95≤f3/f≤−1.20, by which the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition −3.09≤3/f≤−1.50 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: 1.38≤(R5+R6)/(R5−R6)≤4.60, 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, 2.21≤(R5+R6)/(R5−R6)≤3.68.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.11≤d5≤0.39 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.18≤d5≤0.31 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: 0.72≤f4/f≤2.73, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition −1.15≤f4/f≤2.19 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: −1.26≤(R7+R8)/(R7−R8)≤−0.25, 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 lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −0.79≤(R7+R8)/(R7−R8)≤−0.31.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.16≤d7≤1.10 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.25≤d7≤0.88 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: −8.93≤f5/f≤−1.19, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition. −5.58≤f5/f≤−1.49 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: −7.15≤(R9+R10)/(R9−R10)≤−1.26, by which, the shape of the fifth lens L5 is is fixed, 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, −4.47≤(R9+R10)/(R9−R10)≤−1.57.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.21≤d9≤0.68 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.34≤d9≤0.54 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: 3.45≤f6/f≤30.31, which can effectively reduce the sensitivity of lens group used in camera and fluffier enhance the imaging quality. Preferably, the condition 5.52≤f6/f≤24.25 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: 5.08≤(R11+R12)/(R11−R12)≤34.69, by which, the shape of the sixth lens L6 is fixed, 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, 8.13≤(R11+R12)/(R11−R12)≤27.75.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.53≤d11≤1.65 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.85≤d11≤1.32 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: 0.45≤f12/f≤2.19, 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 0.72≤f12/f≤1.75 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.87 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 5.60 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 is 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 =
−0.247

R1
1.987
d1 =
0.397
nd1
1.6030
v1
38.00

R2
4.174
d2 =
0.024

R3
4.310
d3 =
0.561
nd2
1.5440
v2
55.90

R4
14.811
d4 =
0.043

R5
5.069
d5 =
0.220
nd3
1.6390
v3
23.50

R6
2.465
d6 =
0.229

R7
8.489
d7 =
0.733
nd4
1.7521
v4
55.80

R8
−18.689
d8 =
0.457

R9
−3.402
d9 =
0.423
nd5
1.6500
v5
21.40

R10
−11.087
d10 =
0.059

R11
1.818
d11 =
1.102
nd6
1.5350
v6
55.70

R12
1.492
d12 =
0.442

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.435

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 OF;

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
7.2648E−02
−0.014558628
−0.004578928
−0.01632749
0.012781127
−0.009661019
0.005280811
−1.62E−03

R2
8.4037E+00
−0.019908903
−0.048105509
0.033158915
0.004145459
−0.012596203
0.004705656
−0.00127715

R3
3.6468E+00
0.018952334
−0.027611857
0.011434732
0.042507405
−0.025962315
−0.001255937
0.001407825

R4
−4.3972E+02
−0.028156977
0.015441366
−0.13345169
0.07124453
0.015610237
−0.013313814
0.000633646

R5
−9.3374E−01
−0.12932456
0.004346408
−0.039754292
−0.034326624
0.086394375
−0.0323435
0.002377272

R6
−1.0264E+01
−0.01601298
0.043764883
−0.12395516
0.19218386
−0.13059898
0.032972002
0.001686358

R7
−6.6497E+01
0.00386363
−0.016683589
0.068486114
−0.057482917
−0.004114463
2.43E−02
−9.02E−03

R8
−8.3315E+02
0.002306936
−0.073276908
0.12383397
−0.098937897
0.041629276
−6.51E−03
−1.89E−04

R9
−2.7546E+01
0.13425762
−0.2901182
0.39150532
−0.43925488
3.05E−01
−1.16E−01
1.78E−02

R10
−1.6653E+01
−0.092340556
0.20955079
−0.26338406
1.74E−01
−6.52E−02
1.27E−02
−9.91E−04

R11
−1.6626E+01
−0.092340556
0.03130561
−0.003184298
2.51244E−05
4.24399E−05
1.90E−06
−1.01E−06

R12
−4.6995E+00
−0.13617166
0.015469498
−0.00268268
1.87E−04
2.96E−06
−6.37E−07
−7.63E−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
Inflexion
Inflexion
Inflexion

point
point
point
point

number
position 1
position 2
position 3

P1R1
1
1.015

P1R2
1
1.125

P2R1
1
1.145

P2R2
1
0.355

P3R1
2
0.355
1.045

P3R2
0

P4R1
1
0.995

P4R2
1
0.915

P5R1
0

P5R2
0

P6R1
2
0.405
1.735

P6R2
1
0.715

TABLE 4

Arrest point

Arrest point number
Arrest point position 1
position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
1
0.565

P3R1
2
0.595
1.215

P3R2
0

P4R1
1
1.175

P4R2
1
1.165

P5R1
0

P5R2
0

P6R1
1
0.795

P6R2
1
1.575

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 2.156 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 78.32°, 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 =
−0.171

R1
2.144
d1 =
0.327
nd1
1.5979
v1
69.00

R2
4.205
d2 =
0.047

R3
5.218
d3 =
0.619
nd2
1.5396
v2
44.46

R4
17.168
d4 =
0.040

R5
5.736
d5 =
0.235
nd3
1.6474
v3
21.00

R6
2.687
d6 =
0.220

R7
7.777
d7 =
0.311
nd4
2.0722
v4
69.00

R8
−34.088
d8 =
0.523

R9
−3.434
d9 =
0.451
nd5
1.6229
v5
43.44

R10
−6.721
d10 =
0.253

R11
1.765
d11 =
1.063
nd6
1.5046
v6
43.63

R12
1.54271
d12 =
0.486

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R16
∞
d14 =
0.480

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
−3.8821E−01
−0.023879759
−0.009177766
−0.019397042
0.012527705
−0.008692192
0.005797826
−1.21E−03

R2
7.4192E+00
−0.029841853
−0.046883736
0.033572011
0.003122293
−0.013609672
0.003974611
−0.001615186

R3
7.4442E+00
0.038134956
−0.032117211
0.010054878
0.039275182
−0.030196169
−0.003120171
0.000856329

R4
−5.3891E+03
−0.023401754
0.020469918
−0.14326227
0.065600317
0.014503073
−0.012651356
1.32E−03

R5
1.4135E+00
−0.1262733
−0.003787198
−0.035878105
−0.031217615
0.087680204
−0.031606082
0.001456344

R6
−1.2576E+01
−0.027777327
0.042253968
−0.12322529
0.19802448
−0.13019582
0.032031766
0.000383058

R7
−2.7310E−02
0.005072343
−0.019182203
0.064885335
−0.05638358
−0.001704197
0.02526918
−9.36E−03

R8
−1.7901E+04
−0.001860919
−0.075871765
0.12503385
−0.097855181
0.041906151
−0.00686852
−3.10E−04

R9
−2.5374E+01
0.15796384
−0.28871805
0.39164841
−0.44034747
0.30429027
−1.16E−01
0.017905949

R10
−1.5625E+01
−0.091313485
0.21157504
−0.26288957
0.17426881
−0.06527339
0.012675847
−9.80E−04

R11
−1.5121E+01
−0.091313485
0.031141771
−0.003116341
6.75966E−05
4.45417E−05
9.88709E−07
−1.47E−06

R12
−7.1005E+00
−0.13799634
0.015582691
−0.002689887
1.83E−04
2.88E−06
−6.49E−07
−3.18E−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
Inflexion
Inflexion
Inflexion

point
point
point
point

number
position 1
position 2
position 3

P1R1
1
0.845

P1R2
1
0.775

P2R1
1
0.965

P2R2
1
0.265

P3R1
2
0.345
1.015

P3R2
0

P4R1
1
1.125

P4R2
2
0.925
1.285

P5R1
2
0.515
0.575

P5R2
0

P6R1
3
0.405
1.725
1.965

P6R2
1
0.635

TABLE 8

Arrest point

Arrest point number
Arrest point position 1
position 2

P1R1
0

P1R2
1
1.105

P2R1
1
1.125

P2R2
1
0.475

P3R1
2
0.565
1.175

P3R2
0

P4R1
1
1.235

P4R2
1
1.165

P5R1
0

P5R2
0

P6R1
1
0.805

P6R2
1
1.445

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 2.022 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 81.93°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

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

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

TABLE 9

R
d
nd
vd

S1
∞
d0 =
−0.131

R1
2.245
d1 =
0.293
nd1
1.5043
v1
68.97

R2
3.654
d2 =
0.047

R3
4.505
d3 =
0.620
nd2
1.5810
v2
61.02

R4
18.135
d4 =
0.039

R5
5.252
d5 =
0.259
nd3
1.6244
v3
21.00

R6
2.669
d6 =
0.219

R7
7.626
d7 =
0.312
nd4
2.1811
v4
69.01

R8
−32.098
d8 =
0.527

R9
−3.517
d9 =
0.419
nd5
1.5210
v5
69.01

R10
−6.247
d10 =
0.212

R11
1.723
d11 =
1.062
nd6
1.5056
v6
45.70

R12
1.580101
d12 =
0.446

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.440

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
−4.3621E−01
−0.0250539
−0.009710602
−0.019640179
0.012216445
−0.009110507
0.005654016
−1.32E−03

R2
7.4373E+00
−0.029397588
−0.045624904
0.034374365
0.003207284
−0.01358333
0.003989105
−0.001651935

R3
7.2051E+00
0.037146025
−0.032723337
0.009688847
0.039077008
−0.030347951
−0.003184851
0.000820211

R4
−1.1190E+04
−0.023323519
0.020822993
−0.14371492
0.065755512
0.014559881
−0.012668012
0.001282378

R5
2.8565E+00
−0.1259869
−0.003758634
−0.035958137
−0.031242626
0.087694726
−0.03152096
0.001489356

R6
−1.3279E+01
−0.028413213
0.041875173
−0.12372034
0.19768093
−0.13026771
0.031903091
0.000304228

R7
−2.5350E+02
0.005289899
−0.019209152
0.0649496
−0.05630988
−0.001722243
0.02528103
−0.009204838

R8
−1.2241E+04
−0.001974817
−0.075907031
0.12495172
−0.09787157
0.041919602
−0.006852697
−2.99E−04

R9
−3.4982E+01
0.15965448
−0.28879871
0.39175795
−0.4398956
0.30450166
−1.16E−01
1.80E−02

R10
−6.4856E+00
−0.092811471
0.21262293
−0.26293007
0.17423018
−0.065277451
0.01267435
−9.80E−04

R11
−1.4987E+01
−0.092811471
0.031047894
−0.003119529
6.84922E−05
4.48808E−05
8.71875E−07
−1.44E−06

R12
−8.1775E+00
−0.13772181
0.015649793
−0.002685844
1.84E−04
2.89E−06
−6.46E−07
−2.99E−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
Inflexion
Inflexion
Inflexion

point
point
point
point

number
position 1
position 2
position 3

P1R1
1
1.015

P1R2
1
1.125

P2R1
1
1.145

P2R2
1
0.355

P3R1
2
0.355
1.045

P3R2
0

P4R1
1
0.995

P4R2
1
0.915

P5R1
0

P5R2
0

P6R1
2
0.405
1.735

P6R2
1
0.715

TABLE 12

Arrest point

Arrest point number
Arrest point position 1
position 2

P1R1
1
0.805

P1R2
0

P2R1
1
0.975

P2R2
1
0.225

P3R1
2
0.355
1.005

P3R2
0

P4R1
1
1.165

P4R2
2
0.935
1.295

P5R1
2
0.425
0.655

P5R2
1
1.735

P6R1
3
0.405
1.735

P6R2
1
0.615

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 1.826 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 87.76°, 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

Embodi-

Embodiment 1
Embodiment 2
ment 3

f
4.312
4.045
3.652

f1
5.886
6.909
10.793

f2
10.967
13.646
10.149

f3
−7.768
−8.050
−9.039

f4
7.852
5.929
5.239

f5
−7.719
−11.898
−16.306

f6
87.144
40.173
25.184

f12
3.904
4.647
5.330

(R1 + R2)/(R1 − R2)
−2.817
−3.082
−4.188

(R3 + R4)/(R3 − R4)
−1.821
−1.873
−1.661

(R5 + R6)/(R5 − R6)
2.894
2.762
3.067

(R7 + R8)/(R7 − R8)
−0.375
−0.628
−0.616

(R9 + R10)/(R9 − R10)
−1.885
−3.090
−3.577

(R11 + R12)/(R11 − R12)
10.164
14.879
23.124

f1/f
1.365
1.708
2.955

f2/f
2.543
3.374
2.779

f3/f
−1.801
−1.990
−2.475

f4/f
1.821
1.466
1.435

f5/f
−1.790
−2.942
−4.465

f6/f
20.210
9.932
6.895

f12/f
0.905
1.149
1.459

d1
0.397
0.327
0.293

d3
0.561
0.619
0.620

d5
0.220
0.235
0.259

d7
0.733
0.311
0.312

d9
0.423
0.451
0.419

d11
1.102
1.063
1.062

Fno
2.000
2.000
2.000

TTL
5.334
5.266
5.105

d1/TTL
0.074
0.062
0.057

d3/TTL
0.105
0.118
0.122

d5/TTL
0.041
0.045
0.051

d7/TTL
0.137
0.059
0.061

d9/TTL
0.079
0.086
0.082

d11/TTL
0.207
0.202
0.208

n1
1.6030
1.5979
1.5043

n2
1.5440
1.5396
1.5810

n3
1.6390
1.6474
1.6244

n4
1.7521
2.0722
2.1811

n5
1.6500
1.6229
1.5210

n6
1.5350
1.5046
1.5056

v1
38.0000
69.0000
68.9664

v2
55.9000
44.4616
61.0229

v3
23.5000
20.9998
20.9991

v4
55.8000
69.0000
69.0058

v5
21.4000
43.4351
69.0058

v6
55.7000
43.6342
45.7041

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: 0.1≤f1/f≤10;1.7≤n4≤2.2;0.01≤d7/TTL≤0.2;wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n4: the refractive power of the forth lens;d7: the thickness on-axis of the forth lens; andTTL: 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 plastic material, the second lens is made of plastic material, the third lens is made of plastic 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: 0.733≤f1/f≤6.478;1.726≤n4≤2.19;0.035≤d7/TTL≤0.169.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: −8.38≤(R1+R2)/(R1−R2)≤−1.88;0.15≤d1≤0.59; 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: −5.23≤(R1+R2)/(R1−R2)≤−2.35;0.23≤d1≤0.48.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: 1.27≤f2/f≤5.06;−3.75≤(R3+R4)/(R3−R4)≤−1.11;0.28≤d3≤0.93; where:f: 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: 2.03≤f2/f≤4.05;−2.34≤(R3±R4)/(R3−R4)≤−1.38;0.45≤d3≤0.74.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: −4.95≤f3/f≤−1.20;1.38≤(R5+R6)/(R5−R6)≤4.60;0.11≤d5≤0.39; 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.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: −3.09≤f3/f≤−1.50;2.21≤(R5+R6)/(R5−R6)≤3.68;0.18≤d5≤0.31.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: 0.72≤f4/f≤2.73;−1.26≤(R7+R8)/(R7−R8)≤−0.25;0.16≤d7≤1.10; 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: 1.15≤f4/f≤2.19;−0.79≤(R7+R8)/(R7−R8)≤−0.31;0.25≤d7≤0.88.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: −8.93≤f5/f≤−1.19;−7.15(R9+R10)/(R9−R10)≤−1.26;0.21≤d9≤0.68; 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: −5.58≤f5/f≤−1.49;−4.47≤(R9+R10)/(R9−R10)≤−1.57;0.34≤d9≤0.54.
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 relative to the proximal axis; the camera optical lens further satisfies the following conditions: 3.45≤f6/f≤30.31;5.08≤(R11+R12)/(R11−R12)≤34.69;0.53≤d11≤1.65; 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: 0.52≤f6/f≤24.25;8.13≤(R11+R12)/(R11−R12)≤27.75;0.85≤d11≤1.32.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.45≤f12/f≤2.19; 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: 0.72≤f12/f≤1.75.
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 5.87 mm.
19. The camera optical lens as described in claim 18, wherein the total optical length TIT; of the camera optical lens is less than or equal to 5.60 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
201810065399.X	Jan 2018	CN	national
201810065866.9	Jan 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)