Camera Optical Lens

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201711151206.4 and Ser. No. 201711151203.0 filed on Nov. 18, 2017, 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 plastic material, the second lens L2 is made of glass 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, the sixth lens L6 is made of plastic material;

In the embodiment, the second lens L2 has a negative refractive power, and the third lens L3 has a positive refractive power.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.5 custom-character f1/f10. Condition 0.5f1/f<10 fixes the positive refractive power of the first lens L1. If the upper limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.088 custom-character f1/f1.281.

The refractive power of the second lens L2 is n2. Here the following condition should satisfied: 1.7 custom-character n22.2. 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, 1.717n22.102.

The refractive power of the third lens L3 is n3. Here the following condition should satisfied: 1.7 custom-character n32.2. 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, n3=1.713.

The thickness on-axis of the second lens L2 is defined as d3. The total optical length of the camera optical lens is defined as TTL. The following condition: 0.025 custom-character d3/TTL0.20 should be satisfied. The ratio of thickness on-axis of the third lens L3 to total optical length TTL of the camera optical lens is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.056d3/TTL0.07 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 object side surface of the first lens L1 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has a positive refractive power.

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: −4.54 custom-character (R1+R2)/(R1−R2)−1.23, which fixes the shape of the first lens L1, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the condition −2.272 custom-character (R1+R2)/(R1−R2)−1.852 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.24 custom-character d10.83 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.472d10.554 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power.

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: −6.42 custom-character f2//f−1.43 When the condition is satisfied, the negative 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 −3.221 custom-character f2/f−2.140 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: 1.38 custom-character (R3+R4)/(R3−R4)9.19, which fixes the shape of the second lens L2 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, 2.767(R3+R4)/(R3−R4)6.128.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.14 custom-character d30.453 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.287d30.356 shall be satisfied.

In this embodiment, the image side surface of the third lens L3 is a convex surface relative to the proximal axis, and it has positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3. The following condition should be satisfied: 0.61 custom-character f3/f2.24. When the condition is satisfied, the field curvature of the system can be reasonably and effectively balanced for further improving the image quality. Preferably, the condition 1.225f3/f1.491 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: 0.32 custom-character (R5+R6)/(R5−R6)2.07, 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, 0.63(R5+R6)/(R5−R6)1.38.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.24 custom-character d50.90 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.479d50.601 shall be satisfied.

In this embodiment, the object side surface of the fourth lens L4 is a concave surface relative to the proximal axis, the image side surface of the fourth lens L4 is a convex surface relative to the proximal axis. The fourth lens L4 has negative refractive power.

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: −7.46 custom-character f4/f−1.24. 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 −3.728f4/f−1.855 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: −6.18 custom-character (R7+R8)/(R7−R8)−1.07, 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, −3.088 custom-character (R7+R8)/(R7−R8)−1.612.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.08 custom-character d70.83 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.159d70.55 shall be satisfied.

In this embodiment, the object side surface of the fifth lens L5 is a convex surface relative to the proximal axis, the image side surface of the fifth lens L5 is a convex surface relative to the proximal axis. The fifth lens L5 has positive refractive power.

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: 0.56 custom-character f5/f1.98, which can effectively make the light angle of the camera lens flat and reduces the tolerance sensitivity. Preferably, the condition 1.126f5/f1.319 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: −1.88 custom-character (R9+R10)/(R9−R10)−0.57, which fixes the shaping of the fifth lens L5. 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, −0.94 custom-character (R9+R10)/(R9−R10)−0.861.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.28 custom-character d90.86 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.553d90.571 shall be satisfied.

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

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: −1.35 custom-character f6/f−0.43. 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 −0.675f6/f−0.638 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: −2.54 custom-character (R11+R12)/(R11−R12)−0.71, which fixes the shaping of the sixth lens L6. 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, −1.268 custom-character (R11+R12)/(R11−R12)−1.071.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.10 custom-character d110.30 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.198d110.199 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, and the combined focal length of the first lens L1 and the second lens L2 is defined as f12. The following condition should be satisfied: 0.90 custom-character f12/f2,83. 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 1.81f12/f1.885 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.72 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 5.20 mm

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.27. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.20.

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 =
−0.200

R1
1.779
d1 =
0.472
nd1
1.5439
ν1
55.95

R2
5.953
d2 =
0.066

R3
7.026
d3 =
0.356
nd2
1.7174
ν2
29.52

R4
3.296
d4 =
0.297

R5
19.301
d5 =
0.479
nd3
1.7130
ν3
53.87

R6
−4.380
d6 =
0.205

R7
−3.653
d7 =
0.550
nd4
1.6355
ν4
23.97

R8
−15.587
d8 =
0.370

R9
2.657
d9 =
0.571
nd5
1.5352
ν5
56.12

R10
−35.504
d10 =
0.853

R11
−1.303
d11 =
0.198
nd6
1.5352
ν6
56.12

R12
−11.032
d12 =
0.350

R15
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d14 =
0.139

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
−1.9764E−01
1.0728E−02
−2.2647E−03
−2.6175E−03
1.5602E−02
−2.2161E−03
4.5575E−03
−1.5246E−02

R2
1.5814E+01
−1.4198E−01
1.2193E−01
−1.5866E−02
−3.5931E−02
−1.3847E−02
−1.8019E−02
1.6854E−03

R3
2.4827E+01
−1.5869E−01
1.6817E−01
−6.3802E−02
−3.1980E−02
−1.2193E−03
6.6633E−04
−1.2362E−02

R4
5.1708E+00
−5.0427E−02
7.9203E−02
−2.9070E−02
1.2450E−02
−3.8371E−02
4.0887E−02
−1.4786E−02

R5
0.0000E+00
−4.2402E−02
−5.8674E−03
−1.0941E−02
−1.8316E−02
2.2932E−02
−2.7295E−02
1.7164E−02

R6
1.2708E+00
−6.9713E−02
−1.5588E−02
−9.7444E−04
9.2995E−04
−1.3230E−02
9.3003E−03
−3.1590E−03

R7
−1.3929E+01
−1.3072E−01
7.3913E−02
−1.1027E−02
1.0009E−04
1.8818E−03
−1.7139E−03
2.9374E−05

R8
−1.1384E+02
−1.1947E−01
6.0322E−02
−1.1052E−03
−2.1343E−03
−3.2283E−04
1.1211E−04
−9.1206E−07

R9
−2.0950E+00
−6.3640E−02
1.2537E−03
−3.2980E−04
−9.4593E−04
5.7364E−04
−1.9462E−04
2.2689E−05

R10
−1.0005E+03
3.8359E−02
−3.2008E−02
8.9669E−03
−1.5552E−03
1.7781E−04
−1.5839E−05
8.6971E−07

R11
−1.7115E+00
2.2488E−02
−1.5631E−02
5.8276E−03
−9.8877E−04
8.9824E−05
−4.2308E−06
7.5845E−08

R12
−1.2793E+02
5.5425E−03
−8.2944E−03
2.6517E−03
−5.1161E−04
5.2719E−05
−2.6618E−06
5.8151E−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
Inflexion
Inflexion
Inflexion
Inflexion

point
point
point
point
point

number
position 1
position 2
position 3
position 4

P1R1
1
0.965

P1R2
1
0.415

P2R1
1
0.345

P2R2
0

P3R1
2
0.315
1.045

P3R2
0

P4R1
0

P4R2
2
0.975
1.575

P5R1
1
0.675

P5R2
2
0.265
0.795

P6R1
1
1.525

P6R2
1
2.635

TABLE 4

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1
0

P1R2
1
0.815

P2R1
1
0.765

P2R2
0

P3R1
1
0.525

P3R2
0

P4R1
0

P4R2
1
1.395

P5R1
1
1.155

P5R2
2
0.475
0.985

P6R1
1
2.525

P6R2
0

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 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 588 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 3.928 mm, the vision field angle in the diagonal direction is 86.71°, 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 =
−0.200

R1
1.757
d1 =
0.475
nd1
1.5439
ν1
55.95

R2
4.954
d2 =
0.077

R3
5.896
d3 =
0.319
nd2
1.9020
ν2
25.10

R4
3.360
d4 =
0.389

R5
36.460
d5 =
0.532
nd3
1.7130
ν3
53.87

R6
−4.608
d6 =
0.330

R7
−4.442
d7 =
0.360
nd4
1.6355
ν4
23.97

R8
−10.767
d8 =
0.354

R9
2.884
d9 =
0.553
nd5
1.5352
ν5
56.12

R10
−46.080
d10 =
0.830

R11
−1.384
d11 =
0.199
nd6
1.5352
ν6
56.12

R12
−24.954
d12 =
0.350

R15
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d14 =
0.222

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
−1.5599E−01
1.4304E−02
−8.3779E−03
−1.6523E−03
1.6838E−02
−3.8166E−03
5.5299E−03
−4.3663E−03

R2
1.5055E+01
−1.5383E−01
1.1856E−01
−1.7541E−02
−2.2992E−02
1.4110E−02
5.6727E−03
−1.1244E−02

R3
2.3086E+01
−1.5439E−01
1.6208E−01
−6.0240E−02
−2.0726E−02
1.1037E−02
8.4790E−03
−1.0309E−02

R4
5.2555E+00
−5.3869E−02
8.7618E−02
−2.9727E−02
9.0919E−03
−4.0186E−02
4.1101E−02
−1.2159E−02

R5
0.0000E+00
−4.9470E−02
−7.4381E−03
−7.3736E−03
−1.4993E−02
2.2671E−02
−3.0083E−02
1.3953E−02

R6
−1.6148E+00
−6.5351E−02
−1.8262E−02
1.5346E−04
2.9490E−03
−1.2771E−02
9.1556E−03
−2.8854E−03

R7
−4.0986E+01
−1.2715E−01
7.3573E−02
−1.2962E−02
−2.8512E−04
2.3227E−03
−1.3146E−03
1.8299E−04

R8
−3.2607E+01
−1.1925E−01
5.9953E−02
−1.0760E−03
−2.0323E−03
−2.8984E−04
1.1440E−04
−5.4492E−06

R9
−2.4529E+00
−6.4430E−02
3.7391E−04
−3.2788E−04
−1.0771E−03
5.6556E−04
−1.8363E−04
1.3998E−05

R10
−1.7339E+03
3.7187E−02
−3.1616E−02
8.9492E−03
−1.5686E−03
1.7716E−04
−1.5493E−05
9.6535E−07

R11
−1.6392E+00
2.2581E−02
−1.5565E−02
5.8345E−03
−9.8789E−04
8.9973E−05
−4.2219E−06
6.8859E−08

R12
−2.9510E+02
4.4601E−03
−8.3337E−03
2.6736E−03
−5.0965E−04
5.2744E−05
−2.6725E−06
5.6497E−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
Inflexion
Inflexion
Inflexion
Inflexion

point
point
point
point
point

number
position 1
position 2
position 3
position 4

P1R1
0

P1R2
1
0.995

P2R1
1
0.925

P2R2
0

P3R1
1
0.215

P3R2
0

P4R1
2
1.005
1.385

P4R2
2
0.985
1.595

P5R1
1
0.645

P5R2
3
0.235
0.795
2.235

P6R1
1
1.525

P6R2
1
2.605

TABLE 8

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
1
0.365

P3R2
0

P4R1
0

P4R2
1
1.425

P5R1
1
1.085

P5R2
2
0.415
1.005

P6R1
1
2.475

P6R2
0

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 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 588 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 1.956 mm, the full vision field image height is 3.928 mm, the vision field angle in the diagonal direction is 83.85°, 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 =
−0.200

R1
1.874
d1 =
0.554
nd1
1.5439
ν1
55.95

R2
4.820
d2 =
0.102

R3
5.096
d3 =
0.287
nd2
2.1021
ν2
16.77

R4
3.666
d4 =
0.352

R5
−23.404
d5 =
0.601
nd3
1.7130
ν3
53.87

R6
−3.734
d6 =
0.362

R7
−4.717
d7 =
0.159
nd4
1.6355
ν4
23.97

R8
−9.235
d8 =
0.300

R9
2.998
d9 =
0.564
nd5
1.5352
ν5
56.12

R10
−97.020
d10 =
0.905

R11
−1.399
d11 =
0.199
nd6
1.5352
ν6
56.12

R12
−40.668
d12 =
0.350

R15
∞
d13 =
0.210
ndg
1.5168
νg
64.17

R16
∞
d14 =
0.139

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
−2.3223E−01
1.4003E−02
−2.2875E−02
1.2285E−02
2.9467E−02
−9.0450E−03
−9.2448E−03
4.2292E−03

R2
2.1001E+01
−1.3504E−01
1.1575E−01
−2.3989E−02
−8.0692E−03
4.0114E−02
1.6174E−02
−4.2251E−02

R3
2.1549E+01
−1.3451E−01
1.5060E−01
−5.3621E−02
−1.2442E−02
1.3205E−02
5.0007E−03
−1.7891E−02

R4
5.6285E+00
−6.2650E−02
1.0750E−01
−3.1221E−02
6.6532E−03
−3.8785E−02
4.1705E−02
−1.8032E−02

R5
0.0000E+00
−5.5251E−02
9.5600E−04
−2.1387E−03
−1.8210E−02
2.0992E−02
−2.5451E−02
1.4180E−02

R6
−2.6468E+00
−6.4266E−02
−2.0051E−02
6.1693E−04
2.9376E−03
−1.2520E−02
9.4352E−03
−3.1995E−03

R7
−6.6703E+01
−1.2301E−01
7.1033E−02
−1.3977E−02
−1.9892E−04
2.4556E−03
−1.2720E−03
1.8037E−04

R8
−2.7030E+00
−1.2244E−01
6.0990E−02
−6.6817E−04
−2.0035E−03
−2.9350E−04
1.0694E−04
−1.2333E−05

R9
−5.3858E+00
−6.6350E−02
−4.1417E−04
−1.7434E−03
−1.2494E−03
5.7214E−04
−1.9995E−04
6.8766E−06

R10
−1.0544E+03
3.4116E−02
−3.1844E−02
9.0268E−03
−1.5401E−03
1.8070E−04
−1.5440E−05
8.7746E−07

R11
−1.6372E+00
2.1920E−02
−1.5644E−02
5.8306E−03
−9.8863E−04
8.9921E−05
−4.2179E−06
7.3440E−08

R12
1.7684E+02
5.3036E−03
−8.2951E−03
2.6583E−03
−5.1078E−04
5.2741E−05
−2.6714E−06
5.5940E−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
Inflexion
Inflexion
Inflexion
Inflexion

point
point
point
point
point

number
position 1
position 2
position 3
position 4

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
1
1.075

P3R2
0

P4R1
2
1.025
1.435

P4R2
2
0.995
1.525

P5R1
1
0.575

P5R2
3
0.165
0.745
2.095

P6R1
1
1.555

P6R2
1
2.725

TABLE 12

Arrest point
Arrest point
Arrest point

number
position 1
position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
0

P4R1
0

P4R2
2
1.485
1.565

P5R1
1
0.975

P5R2
2
0.295
0.965

P6R1
0

P6R2
0

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486 nm, 588 nm and 656 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 588 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 1.876 mm, the full vision field image height is 3.928 mm, the vision field angle in the diagonal direction is 86.10°, 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
4.122
4.304
4.127

f1
4.486
4.757
5.287

f2
−9.014
−9.211
−13.250

f3
5.050
5.769
6.153

f4
−7.646
−12.168
−15.384

f5
4.644
5.091
5.444

f6
−2.781
−2.746
−2.712

f12
7.461
8.115
7.649

(R1 + R2)/(R1 − R2)
−1.852
−2.099
−2.272

(R3 + R4)/(R3 − R4)
2.767
3.650
6.128

(R5 + R6)/(R5 − R6)
0.630
0.776
1.380

(R7 + R8)/(R7 − R8)
−1.612
−2.405
−3.088

(R9 + R10)/(R9 −
−0.861
−0.882
−0.940

R10)

(R11 + R12)/(R11 −
−1.268
−1.117
−1.071

R12)

f1/f
1.088
1.105
1.281

f2/f
−2.187
−2.140
−3.211

f3/f
1.225
1.340
1.491

f4/f
−1.855
−2.827
−3.728

f5/f
1.126
1.183
1.319

f6/f
−0.675
−0.638
−0.657

f12/f
1.810
1.885
1.853

d1
0.472
0.475
0.554

d3
0.356
0.319
0.287

d5
0.479
0.532
0.601

d7
0.550
0.360
0.159

d9
0.571
0.553
0.564

d11
0.198
0.199
0.199

Fno
2.200
2.200
2.200

TTL
5.116
5.200
5.086

d1/TTL
0.092
0.091
0.109

d3/TTL
0.070
0.061
0.056

d5/TTL
0.094
0.102
0.118

d7/TTL
0.108
0.069
0.031

d9/TTL
0.112
0.106
0.111

d11/TTL
0.039
0.038
0.039

n1
1.5439
1.5439
1.5439

n2
1.7174
1.9020
2.1021

n3
1.7130
1.7130
1.7130

n4
1.6355
1.6355
1.6355

n5
1.5352
1.5352
1.5352

n6
1.5352
1.5352
1.5352

v1
55.9524
55.9524
55.9524

v2
29.5181
25.1014
16.7714

v3
53.8671
53.8671
53.8671

v4
23.9718
23.9718
23.9718

v5
56.1153
56.1153
56.1153

v6
56.1153
56.1153
56.1153

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.

Number	Date	Country	Kind
201711151203.0	Nov 2017	CN	national
201711151206.4	Nov 2017	CN	national

Camera Optical Lens

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Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

Priority Claims (2)