Camera Optical Lens

Description

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

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

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

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

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

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

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Optical element like optical filter GF can be arranged between the sixth lens L6 and the image surface Si. The first lens 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 L,3 has a positive refractive power.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤10 fixes the positive refractive power of the first lens L1. If the 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, 1.132≤f1/f≤9.057.

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≤2.148.

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, 1.715≤n3≤2.148.

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: −162.97≤(R1+R2)/(R1−R2)≤−5.15 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 −101.86≤(R1+R2)/(R1−R2)≤−6.43 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.03≤d1/TTL≤0.11 should be satisfied. This condition fixes the ratio between the thickness on-axis of the first lens L1 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04≤d1/TTL≤0.09 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: 0.68≤f2/f≤4.15. 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 1.09≤f2/f≤3.32 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: −6.87≤(R3+R4)/(R3−R4)≤−1.26, 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, −4.29≤(R3+R4)/(R3−R4)≤−1.58.

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: 0.04≤d3/TTL≤0.15 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 0.06≤d3/TTL≤0.12 shall be satisfied.

In this embodiment, the third lens L3 has 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 third lens L3 is f3. The following condition should be satisfied: 3152.40≤f3/f, by which the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition 5043.84≤f3/f 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: 38.76≤(R5+R6)/(R5−R6), which fixes the shape of the third lens L3 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, 62.01≤(R5+R6)/(R5−R6).

The thickness on-axis of the third lens L3 is defined as d5, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.02≤d5/TTL≤0.07 should be satisfied. This condition fixes the ratio between the thickness on-axis of the third lens L3 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.03≤d5/TTL≤0.06 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: 0.62f4/f≤1.88, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.99≤f4/f≤1.51 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: 1.59≤(R7+R8)/(R7−R8)≤5.01, which fixes the shape of the fourth lens L4 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, 2.55≤(R7+R8)/(R7−R8)≤4.01.

The thickness on-axis of the fourth lens L4 is defined as d7, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.05≤d7/TTL≤0.16 should be satisfied. This condition fixes the ratio between the thickness on-axis of the fourth 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 0.08≤d7/TTL≤0.13 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: −2.24≤f5/f≤−0.72, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.40≤f5/f≤−0.90 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: 4.32≤(R9+R10)/(R9−R10)≤−1.30, by which, the shape of the fifth lens L5 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −2.70≤(R9+R10)(R9−R10)≤−1.62.

The thickness on-axis of the fifth lens L5 is defined as d9, and the 15s total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.02≤d9/TTL≤0.09 should be satisfied. This condition fixes the ratio between the thickness on-axis of the fifth lens L5 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04≤d9/TTL≤0.07 shall be satisfied.

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

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: 1.36≤f6/f≤7.57, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 2.18≤f6/f≤6.06 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −226.45≤(R11+R12)/(R11−R12)≤59.01, by which, the shape of the sixth lens L6 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −141.53≤(R11+R12)/(R11−R12)≤47.21.

The thickness on-axis of the sixth lens L6 is defined as d11, and the total optical length of the camera optical lens 10 is defined as TTL. The following condition: 0.09≤d11/TTL≤0.27 should be satisfied. This condition fixes the ratio between the thickness on-axis of the sixth lens L6 and the total optical length TTL. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.14≤d11/TTL≤0.22 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.56≤f12/f≤1.84, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for realizing the ultra-thin lens. Preferably, the condition 0.89≤f12/f≤1.47 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.07 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 5.79 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.06. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.02.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1

R
d
nd
νd

S1
∞
d0=
−0.335

R1
1.833
d1=
0.421
nd1
1.7313
ν1
56.30

R2
2.379
d2=
0.239

R3
2.786
d3=
0.409
nd2
1.5140
ν2
56.80

R4
5.428
d4=
0.303

R5
−525.386
d5=
0.259
nd3
1.7290
ν3
21.00

R6
−512.003
d6=
0.186

R7
−2.808
d7=
0.599
nd4
1.5300
ν4
57.03

R8
−1.514
d8=
0.049

R9
−1.829
d9=
0.251
nd5
1.6140
ν5
25.60

R10
−4.977
d10=
0.264

R11
1.743
d11=
1.000
nd6
1.5178
ν6
34.89

R12
1.657
d12=
0.668

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.650

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 L 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
4.7982E−01
−0.012214858
0.007487557
−0.01099464
0.013388522
−0.009960431
0.003143529
−0.000298805

R2
6.3217E−01
−0.017584584
−0.000885049
0.007128164
−0.000411934
−0.012232396
0.00813055
−0.002172135

R3
−7.3755E+00
0.00288309
−0.038227344
0.003073677
0.037038629
−0.071154402
0.033143812
−0.003722386

R4
1.2527E+01
−0.055148615
−0.032134967
−0.037392016
0.059503094
−0.067150544
0.02790265
−0.001396035

R5
4.8448E+04
−0.070781336
−0.032378096
−0.059506651
−0.008583994
0.026792273
0.003304142
−0.002299568

R6
−3.5094E+08
−0.036729992
0.042248265
−0.14186402
0.15057774
−0.087159515
0.021362679
0.000381168

R7
3.2803E+00
−0.027406175
0.044221455
0.072888075
−0.057626593
−0.011796516
0.020961002
−0.003814838

R8
−3.4677E−01
0.002186624
−0.038630703
0.060188422
−0.037528373
0.017765867
−0.002909526
3.98805E−05

R9
−6.6249E+00
0.018456288
−0.19524506
0.36225972
−0.4302527
0.30187986
−0.11181211
0.016623823

R10
−2.8090E+00
−0.15409654
0.23773925
−0.25676007
0.17114116
−0.063847913
1.23E−02
−9.70E−04

R11
−1.1630E+01
−0.15409654
0.031077686
−0.002095249
−0.000271587
1.18E−05
7.30E−06
−6.69E−07

R12
−4.4125E+00
−0.10988104
0.016399311
−0.002992301
0.000320039
−1.74E−05
4.36E−07
−9.63E−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, PIR1 and PIR2 represent respectively the object side surface and image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and image side surface of the sixth lens L6. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
1
1.045

P2R1
1
0.695

P2R2
1
0.485

P3R1
1
1.135

P3R2
1
1.175

P4R1
2
0.885
1.285

P4R2
1
1.075

P5R1
1
1.385

P5R2
2
1.165
1.565

P6R1
3
0.475
1.485
2.205

P6R2
1
0.745

TABLE 4

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.995

P2R2
1
0.755

P3R1
0

P3R2
0

P4R1
0

P4R2
1
1.375

P5R1
0

P5R2
0

P6R1
3
0.995
2.045
2.305

P6R2
1
1.745

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 2.1689 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 77.990, 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=
−0.323

R1
1.887
d1=
0.348
nd1
2.0964
ν1
56.30

R2
2.198
d2=
0.284

R3
2.951
d3=
0.412
nd2
1.5140
ν2
56.80

R4
5.377
d4=
0.284

R5
−243.134
d5=
0.241
nd3
2.0945
ν3
21.00

R6
−241.474
d6=
0.205

R7
−2.826
d7=
0.592
nd4
1.5300
ν4
58.20

R8
−1.519
d8=
0.052

R9
−1.872
d9=
0.268
nd5
1.6140
ν5
25.60

R10
−5.309
d10=
0.232

R11
1.830
d11=
0.961
nd6
1.5081
ν6
33.26

R12
1.895771
d12=
0.715

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.697

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
4.7890E−01
−0.010882437
0.006828088
−0.011199013
0.013360725
−0.009989409
0.003094609
−0.000377439

R2
7.2659E−01
−0.013793188
−0.00065445
0.005978188
−0.000370239
−0.012221541
0.008138772
−0.00183425

R3
−6.0471E+00
0.004701751
−0.026145143
0.00265031
0.037970122
−0.069240527
0.033315777
−0.003751665

R4
1.5511E+01
−0.051417413
−0.028120083
−0.03607144
0.060788154
−0.067114171
0.027235836
−0.001807414

R5
−7.4743E+05
−0.06148411
−0.021004019
−0.050378346
−0.007876449
0.024958662
0.002923706
−0.002612063

R6
−3.9040E+06
−0.036864731
0.044262658
−0.14138368
0.1510262
−0.086816799
0.021491903
0.000387608

R7
3.3831E+00
−0.016988972
0.050014693
0.072974214
−0.059539213
−0.012666417
0.020910913
−0.003463592

R8
−5.1774E−01
0.004086046
−0.038502387
0.060093349
−0.037425037
0.01778235
−0.003014074
−9.6871E−06

R9
−7.3444E+00
0.018350339
−0.19393182
0.36239786
−0.43042071
0.30184068
−0.11179691
0.01666673

R10
−1.9041E−02
−0.15169212
0.23840051
−0.2568233
0.17106128
−0.063874961
1.23E−02
−9.66E−04

R11
−1.4402E+01
−0.15169212
0.030895892
−0.002140374
−0.000272881
1.12E−05
7.58E−06
−6.72E−07

R12
−4.9430E+00
−0.10590706
0.016444854
−0.002992222
0.000319944
−1.73E−05
4.44E−07
−1.15E−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
0

P1R2
0

P2R1
1
0.775

P2R2
1
0.515

P3R1
1
1.125

P3R2
1
1.145

P4R1
2
0.785
1.285

P4R2
1
1.045

P5R1
1
1.375

P5R2
2
1.165
1.535

P6R1
3
0.455
1.455
2.255

P6R2
1
0.725

TABLE 8

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
1.085

P2R2
1
0.795

P3R1
0

P3R2
0

P4R1
0

P4R2
1
1.365

P5R1
0

P5R2
0

P6R1
3
0.965
1.965
2.415

P6R2
1
1.625

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 2.1761 mm, the fill vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 77.80°, 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=
−0.260

R1
1.984
d1=
0.288
nd1
1.7087
ν1
56.30

R2
2.034
d2=
0.099

R3
2.086
d3=
0.552
nd2
1.5140
ν2
56.80

R4
6.766
d4=
0.316

R5
94.157
d5=
0.230
nd3
1.7518
ν3
21.52

R6
94.058
d6=
0.241

R7
−2.885
d7=
0.567
nd4
1.5300
ν4
70.00

R8
−1.508
d8=
0.045

R9
−1.813
d9=
0.345
nd5
1.6140
ν5
25.60

R10
−5.640
d10=
0.195

R11
1.488
d11=
0.988
nd6
1.5361
ν6
38.25

R12
1.514351
d12=
0.729

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.711

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
4.2383E−01
−0.011236494
0.002254198
−0.011527678
0.014061548
−0.009162562
0.003373457
−0.000862566

R2
1.4372E−02
−0.033723067
−0.00362885
0.007747082
−0.000431814
−0.012795363
0.00805152
−0.001164728

R3
−3.9873E+00
0.016938794
−0.034531669
0.007735779
0.037351363
−0.071437227
0.032736612
−0.003949385

R4
1.9147E+01
−0.033920891
−0.031557418
−0.040617808
0.059177621
−0.066545249
0.027942757
−0.002080377

R5
−1.2659E+06
−0.072680904
−0.031999769
−0.05961548
−0.00847295
0.027161747
0.003745388
−0.001911616

R6
4.4488E+03
−0.04270712
0.039942328
−0.14170738
0.15073278
−0.087260181
0.021136583
0.000122294

R7
3.1430E+00
−0.021559078
0.044380457
0.072847044
−0.057994428
−0.012172645
0.020687715
−0.003977852

R8
−3.9811E−01
0.008371455
−0.040577227
0.06052591
−0.037387733
0.017912354
−0.002716487
0.000238851

R9
−1.0353E+01
0.01868046
−0.19654235
0.36207815
−0.43007531
0.30206927
−0.11174069
0.01659306

R10
−3.8985E+00
−0.1533079
0.23827401
−0.25666708
0.17110724
−0.063865774
1.23E−02
−9.68E−04

R11
−9.4098E+00
−0.1533079
0.030537679
−0.002122015
−0.000267697
1.23E−05
7.34E−06
−6.71E−07

R12
−4.2187E+00
−0.10811419
0.016608606
−0.00299627
0.000316654
−1.76E−05
4.47E−07
−7.42E−09

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

TABLE 11

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
0.815

P2R2
1
0.495

P3R1
2
0.075
1.115

P3R2
2
0.155
1.215

P4R1
1
0.805

P4R2
1
1.035

P5R1
1
1.375

P5R2
2
1.135
1.585

P6R1
3
0.495
1.515
2.175

P6R2
1
0.755

TABLE 12

Arrest point
Arrest point
Arrest point
Arrest point

number
position 1
position 2
position 3

P1R1
0

P1R2
0

P2R1
1
1.105

P2R2
1
0.755

P3R1
1
0.135

P3R2
1
0.265

P4R1
1
1.275

P4R2
1
1.305

P5R1
0

P5R2
0

P6R1
3
1.085
2.085
2.245

P6R2
1
1.835

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 2.0787 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 80.38°, 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
4.338
4.352
4.157

f1
8.242
7.676
33.729

f2
10.582
12.035
5.642

f3
2.735E+04
3.003E+04
1.074E+09

f4
5.345
5.359
5.215

f5
−4.859
−4.855
−4.507

f6
21.892
17.525
11.316

f12
4.830
4.862
5.088

(R1 + R2)/(R1 − R2)
−7.718
−13.136
−81.487

(R3 + R4)/(R3 − R4)
−3.109
−3.434
−1.891

(R5 + R6)/(R5 − R6)
77.515
291.876
1904.527

(R7 + R8)/(R7 − R8)
3.342
3.326
3.189

(R9 + R10)/(R9 −
−2.162
−2.090
−1.948

R10)

(R11 + R12)/(R11 −
39.338
−56.649
−113.223

R12)

f1/f
1.900
1.764
8.113

f2/f
2.439
2.765
1.357

f3/f
6.305E+03
6.900E+03
2.583E+08

f4/f
1.232
1.231
1.254

f5/f
−1.120
−1.115
−1.084

f6/f
5.047
4.027
2.722

f12/f
1.114
1.117
1.224

d1
0.421
0.348
0.288

d3
0.409
0.412
0.552

d5
0.259
0.241
0.230

d7
0.599
0.592
0.567

d9
0.251
0.268
0.345

d11
1.000
0.961
0.988

Fno
2.000
2.000
2.000

TTL
5.509
5.501
5.516

d1/TTL
0.076
0.063
0.052

d3/TTL
0.074
0.075
0.100

d5/TTL
0.047
0.044
0.042

d7/TTL
0.109
0.108
0.103

d9/TTL
0.045
0.049
0.062

d11/TTL
0.182
0.175
0.179

n1
1.7313
2.0964
1.7087

n2
1.5140
1.5140
1.5140

n3
1.7290
2.0945
1.7518

n4
1.5300
1.5300
1.5300

n5
1.6140
1.6140
1.6140

n6
1.5178
1.5081
1.5361

v1
56.3000
56.3000
56.3000

v2
56.8000
56.8000
56.8000

v3
20.9985
20.9996
21.5192

v4
57.0283
58.2020
70.0004

v5
25.6000
25.6000
25.6000

v6
34.8926
33.2619
38.2535

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed.

Claims

1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth 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; 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.
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: 1.132≤f1/f≤9.057;1.705≤n1≤2.148;1.715≤n3≤2.148.
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: −162.97(R1+R2)/(R1−R2)≤−5.15;0.03≤d1/TTL≤0.11; 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: −101.86(R1+R2)/(R1−R2)≤−6.43;0.04≤d1/TTL≤0.09.
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: 0.68≤f2/f≤4.15;−6.87≤(R3+R4)/(R3−R4)≤−1.26;0.04≤d3/TTL≤0.15; wheref: the focal length of the camera optical lens;f2: the focal length of the second lens;R3: the curvature radius of the object side surface of the second lens;R4: the curvature radius of the image side surface of the second lens;d3: the thickness on-axis of the second lens;TTL: the total optical length of the camera optical lens.
7. The camera optical lens as described in claim 6 further satisfying the following conditions: 1.09≤f2/f−3.32;−4.29≤(R3+R4)/(R3−R4)≤−1.58;0.06≤d3/TTL≤0.12.
8. The camera optical lens as described in claim 1, the camera optical lens further satisfies the following conditions: 3152.40≤f3/f; 38.76≤(R5+R6)/(R5−R6);0.02≤d5/TTL≤0.07; wheref: the focal length of the camera optical lens;f3: the focal length of the third lens;R5: the curvature radius of the object side surface of the third lens;R6: the curvature radius of the image side surface of the third lens;d5: the thickness on-axis of the third lens;TTL: the total optical length of the camera optical lens.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: 5043.84≤f3/f; 62.01≤(R5+R6)/(R5−R6);0.03≤d5/TTL≤0.06.
10. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.62≤f4/f≤1.88;1.59≤(R7+R8)/(R7−R8)≤5.01;0.05≤d7/TTL≤0.16; 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: 0.99≤f4/f≤1.51:2.55≤(R7+R8)/(R7−R8)≤4.01;0.08≤d7/TTL≤0.13.
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: −2.24≤f5/f≤−0.72;−4.32≤(R9+R10)/(R9−R10)≤−1.30;0.02≤d9/TTL≤0.09; 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: −1.40≤f5/f≤−0.90;−2.70≤(R9+R10)/(R9−R10)≤−1.62;0.04≤d9/TTL≤0.07.
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: 1.36≤f6f≤7.57;−226.45≤(R11+R12)/(R11−R12)≤59.01;0.09≤d11/TTL≤0.27; 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: 2.18≤f6/f≤6.06;−141.53≤(R11+R12)/(R11−R12)≤47.21;0.14≤d11/TTL≤0.22.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.56≤f12/f≤1.84; wheref12: the combined focal length of the first lens and the second lens;f: the focal length of the camera optical lens.
17. The camera optical lens as described in claim 16 further satisfying the following condition: 0.89≤f12/f≤1.47.
18. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.07 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 5.79 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
201810387608.2	Apr 2018	CN	national
201810388553.7	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)