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 plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of glass material, and the sixth lens L6 is made of plastic material.

The second lens L2 has a positive refractive power, and the third lens L3 has a 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 L. 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, 1.119≤f1/f≤9.061.

The refractive power of the first lens L1 is defined as n1. Here the following condition should satisfied: 1.75≤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, 1.723≤n1≤2.164.

The refractive power of the fifth lens L5 is defined as n5. Here the following condition should satisfied: 1.7≤n5≤2.2. This condition fixes the refractive power of the fifth lens L5, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.703≤n5≤2.147.

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: −145.41≤(R1+R2)/(R1−R2)≤−4.52, 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 −90.88≤(R1+R2)/(R1−R2)≤−5.65 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.

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: 0.63≤f2/f≤3.99. 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 1.0 l≤f2/f≤3.19 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: −4.92≤(R3+R4)/(R3−R4)≤−0.65, 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, −3.08≤(R3+R4)/(R3−R4)≤−0.81.

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≤0.17 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≤0.14 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: f3/f≥43.58, by which the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition f3/f≥69.73 should be satisfied.

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 0.04≤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: 0.55≤f4/f≤2.00, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.88≤f4/f≤1.60 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: 1.29≤(R7+R8)/(R7−R8)≤4.66, by which, 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, 2.06≤(R7+R8)/(R7−R8)≤3.72.

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≤0.18 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 0.09≤d7/TTL≤0.15 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: −1.61≤f5/f≤−0.50, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.01≤f5/f≤−0.62 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: −5.27≤(R9+R10)/(R9−R10)≤−1.35, 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, −3.30≤(R9+R10)/(R9−R10)≤−1.69.

The thickness on-axis of the fifth lens L5 is defined as d9, and the 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: 0.705≤f6/f≤2.58, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.12≤f6/f≤2.06 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: −46.05≤(R11+R12)/(R11−R12)≤−10.07, 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, −28.78≤(R11+R12)/(R11−R12)≤−12.58.

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≤0.28 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 0.15≤d11/TTL≤0.23 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.54≤f12/f≤1.73, 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 0.86≤f12/f≤1.38 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.06 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=
−0.300

R1
1.866
d1=
0.420
nd1
1.7458
ν1
56.30

R2
2.513
d2=
0.252

R3
3.401
d3=
0.403
nd2
1.5140
ν2
56.80

R4
8.056
d4=
0.282

R5
−1584.254
d5=
0.266
nd3
1.5807
ν3
20.00

R6
−1584.151
d6=
0.161

R7
−3.175
d7=
0.640
nd4
1.5300
ν4
56.42

R8
−1.478
d8=
0.049

R9
−1.455
d9=
0.259
nd5
1.7070
ν5
25.60

R10
−4.283
d10=
0.197

R11
1.597
d11=
1.002
nd6
1.6886
ν6
37.91

R12
1.756
d12=
0.691

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.668

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 S 1 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

R1
5.0693E−01
−0.011225967
0.008275544
−0.011638098
0.013597078

R2
1.1965E+00
−0.017917688
−0.000693927
0.002010762
8.97599E−05

R3
−1.7360E+01
0.003542657
−0.048329598
−0.002882794
0.033672524

R4
8.1405E+00
−0.06266171
−0.032962073
−0.035914999
0.056165886

R5
−3.8827E+39
−0.073173783
−0.048310214
−0.048471481
−0.007110659

R6
−7.3967E+07
−0.032490115
0.050352434
−0.14868942
0.16068409

R7
4.3773E+00
−0.034664225
0.044423806
0.063383247
−0.054839959

R8
−3.5980E−01
0.008732878
−0.040930683
0.059748774
−0.03640046

R9
−7.1048E+00
0.000329086
−0.18704355
0.37058621
−0.43324906

R10
1.5105E−01
−0.15593672
0.24229187
−0.25813956
0.17175779

R11
−1.0947E+01
−0.15593672
0.028249781
−0.001905793
−0.000237234

R12
−5.3218E+00
−0.10511044
0.016127567
−0.002901687
0.000313051

Aspherical Surface Index

A12
A14
A16

R1
−0.009959411
0.003211763
−0.000228566

R2
−0.009677745
0.00701961
−0.002500364

R3
−0.066939491
0.031855171
−0.002905604

R4
−0.065600252
0.033496522
−0.004012621

R5
0.024158409
0.002714519
−0.002530861

R6
−0.095065845
0.022768551
0.000557078

R7
−0.010786422
0.022454412
−0.004861871

R8
0.016734178
−0.002851292
0.000119633

R9
0.29995841
−0.11032396
0.01631166

R10
−0.064025755
1.23E−02
−9.60E−04

R11
1.57E−05
5.14E−06
−5.04E−07

R12
−1.81E−05
4.82E−07
−7.03E−09

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

IH: Image height

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

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

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

TABLE 3

Inflexion point
Inflexion point
Inflexion point
Inflexion point

number
position 1
position 2
position 3

P1R1
0

P1R2
1
1.015

P2R1
1
0.595

P2R2
1
0.375

P3R1
0

P3R2
1
1.175

P4R1
2
0.975
1.295

P4R2
1
1.085

P5R1
1
1.385

P5R2
2
1.155
1.595

P6R1
3
0.485
1.575
2.175

P6R2
1
0.715

TABLE 4

Arrest point number
Arrest point position 1

P1R1
0

P1R2
0

P2R1
1
0.895

P2R2
1
0.605

P3R1
0

P3R2
0

P4R1
0

P4R2
1
1.385

P5R1
0

P5R2
0

P6R1
1
1.035

P6R2
1
1.655

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 2.0916 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 80.03°, 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=
−0.273

R1
1.940
d1=
0.352
nd1
2.1271
ν1
56.30

R2
2.310
d2=
0.286

R3
3.727
d3=
0.447
nd2
1.5140
ν2
56.80

R4
12.601
d4=
0.227

R5
−1465.937
d5=
0.269
nd3
1.6035
ν3
20.50

R6
−188.562
d6=
0.144

R7
−3.759
d7=
0.653
nd4
1.5300
ν4
57.55

R8
−1.655
d8=
0.057

R9
−1.723
d9=
0.249
nd5
2.0931
ν5
25.60

R10
−3.829
d10=
0.238

R11
1.559
d11=
1.014
nd6
1.6851
ν6
35.99

R12
1.78039
d12=
0.636

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.615

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

R1
5.1492E−01
−0.009074004
0.008977251
−0.013806402
0.014392106

R2
1.3263E+00
−0.014488766
−0.001597668
0.000729769
−0.000164232

R3
−2.0308E+01
0.00543788
−0.046515502
−0.002768063
0.032529305

R4
−2.1127E−01
−0.070333113
−0.030646663
−0.041745019
0.055953429

R5
−9.8817E+39
−0.064816432
−0.051189314
−0.034091797
−0.007636385

R6
−6.8858E+05
−0.01594747
0.052411995
−0.1448793
0.15618614

R7
6.8662E+00
−0.02007256
0.044767783
0.056646003
−0.059096273

R8
−2.7206E−01
0.004061225
−0.040269875
0.064983598
−0.038293587

R9
−4.5835E+00
0.009112154
−0.17818633
0.3653334
−0.43092886

R10
3.0858E−01
−0.15789577
0.24907967
−0.25881557
0.17081812

R11
−1.0120E+01
−0.15789577
0.027227711
−0.001825282
−0.000218003

R12
−4.6871E+00
−0.10553762
0.017052899
−0.002938143
0.000291744

Aspherical Surface Index

A12
A14
A16

R1
−0.009328232
0.002825583
−0.000213605

R2
−0.008986228
0.007221664
−0.002223593

R3
−0.068120273
0.031808479
−0.002657476

R4
−0.061438286
0.034588791
−0.005766492

R5
0.023949605
0.001874669
−0.002692734

R6
−0.097257663
0.023779202
0.001272387

R7
−0.009246291
0.023043937
−0.004682213

R8
0.015908947
−0.003093508
0.000142693

R9
0.2996083
−0.11088229
0.01647973

R10
−0.064028395
1.24E−02
−9.50E−04

R11
1.66E−05
4.77E−06
−5.51E−07

R12
−1.54E−05
4.90E−07
−1.70E−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
0.595

P2R2
1
0.295

P3R1
0

P3R2
1
1.155

P4R1
2
1.065
1.285

P4R2
1
1.095

P5R1
1
1.395

P5R2
3
1.175
1.415
1.605

P6R1
3
0.485
1.635
2.055

P6R2
1
0.715

TABLE 8

Arrest point number
Arrest point position 1

P1R1
0

P1R2
0

P2R1
1
0.885

P2R2
1
0.485

P3R1
0

P3R2
1
1.255

P4R1
0

P4R2
0

P5R1
0

P5R2
0

P6R1
1
1.035

P6R2
1
1.635

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 2.0565 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 80.99°, 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=
−0.202

R1
2.039
d1=
0.279
nd1
1.7550
ν1
56.30

R2
2.096
d2=
0.122

R3
2.587
d3=
0.622
nd2
1.5140
ν2
56.80

R4
−158.852
d4=
0.298

R5
−511.354
d5=
0.247
nd3
1.4412
ν3
23.56

R6
−511.430
d6=
0.184

R7
−3.022
d7=
0.606
nd4
1.5300
ν4
70.00

R8
−1.549
d8=
0.050

R9
−1.342
d9=
0.331
nd5
1.7062
ν5
25.60

R10
−3.671
d10=
0.191

R11
1.384
d11=
1.040
nd6
1.6900
ν6
39.52

R12
1.510202
d12=
0.677

R13
∞
d13=
0.210
ndg
1.5168
νg
64.17

R14
∞
d14=
0.653

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

R1
5.0732E−02
−0.015762086
−0.002353398
−0.015755777
0.016702725

R2
1.8037E−01
−0.041954175
−0.004749521
−0.010276512
−0.00172581

R3
−9.1068E+00
0.025445972
−0.043278034
−0.003725472
0.033544886

R4
−4.5200E+06
−0.048958086
−0.030890579
−0.024971145
0.049121229

R5
−9.9330E+39
−0.079843764
−0.053607511
−0.050478303
−0.005375322

R6
−9.9564E+39
−0.015044634
0.044729818
−0.14382667
0.1642731

R7
3.5291E+00
−0.033588694
0.04680732
0.066389853
−0.054464075

R8
−3.2163E−01
−0.004033432
−0.041357745
0.059428144
−0.036428498

R9
−6.6487E+00
−0.002179128
−0.19177514
0.3744243
−0.43188726

R10
−3.9623E−01
−0.15241666
0.24436691
−0.25777
0.17170592

R11
−8.0199E+00
−0.15241666
0.025495627
−0.00225301
−0.000159956

R12
−4.5275E+00
−0.093939016
0.015728773
−0.002875877
0.000311697

Aspherical Surface Index

A12
A14
A16

R1
−0.011256015
0.005500521
−0.001786929

R2
−0.0058957
0.009785587
−0.000224879

R3
−0.069439184
0.030136193
0.005162001

R4
−0.066389808
0.03459635
−0.004712602

R5
0.02524186
0.003763228
−0.002251002

R6
−0.094722834
0.021330503
−0.00057643

R7
−0.012002737
0.021763497
−0.004950962

R8
0.016801169
−0.002773975
0.000209097

R9
0.30015833
−0.11039464
0.01613058

R10
−0.064066809
1.23E−02
−9.59E−04

R11
2.24E−05
4.57E−06
−6.39E−07

R12
−1.83E−05
4.90E−07
−5.99E−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

point number
point position 1
point position 2

P1R1
0

P1R2
0

P2R1
2
0.705
1.035

P2R2
0

P3R1
1
1.125

P3R2
0

P4R1
2
0.865
1.305

P4R2
1
1.085

P5R1
1
1.415

P5R2
2
1.105
1.605

P6R1
1
0.525

P6R2
1
0.755

TABLE 12

Arrest point number
Arrest point position 1

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
0

P4R1
0

P4R2
1
1.365

P5R1
0

P5R2
0

P6R1
1
1.215

P6R2
1
1.905

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 1.9728 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 83.34°, 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
Embodiment

1
2
Embodiment 3

f
4.183
4.113
3.946

f1
7.614
7.144
32.047

f2
11.126
10.121
4.960

f3
2.159E+07
358.5
5.960E+09

f4
4.616
5.037
5.250

f5
−3.240
−3.056
−3.183

f6
7.185
6.396
5.507

f12
4.721
4.405
4.542

(R1 + R2)/(R1 − R2)
−6.775
−11.491
−72.705

(R3 + R4)/(R3 − R4)
−2.462
−1.840
−0.968

(R5 + R6)/(R5 − R6)
30933.297
1.295
−13523.852

(R7 + R8)/(R7 − R8)
2.742
2.573
3.104

(R9 + R10)/(R9 − R10)
−2.029
−2.637
−2.153

(R11 + R12)/(R11 − R12)
−21.187
−15.100
−23.027

f1/f
1.820
1.737
8.122

f2/f
2.660
2.461
1.257

f3/f
5.161E+06
87.16
1.511E+09

f4/f
1.103
1.225
1.331

f5/f
−0.775
−0.743
−0.807

f6/f
1.718
1.555
1.396

f12/f
1.129
1.071
1.151

d1
0.420
0.352
0.279

d3
0.403
0.447
0.622

d5
0.266
0.269
0.247

d7
0.640
0.653
0.606

d9
0.259
0.249
0.331

d11
1.002
1.014
1.040

Fno
2.000
2.000
2.000

TTL
5.501
5.398
5.510

d1/TTL
0.076
0.065
0.051

d3/TTL
0.073
0.083
0.113

d5/TTL
0.048
0.050
0.045

d7/TTL
0.116
0.121
0.110

d9/TTL
0.047
0.046
0.060

d11/TTL
0.182
0.188
0.189

n1
1.7458
2.1271
1.7550

n2
1.5140
1.5140
1.5140

n3
1.5807
1.6035
1.4412

n4
1.5300
1.5300
1.5300

n5
1.7070
2.0931
1.7062

n6
1.6886
1.6851
1.6900

v1
56.3000
56.3000
56.3000

v2
56.8000
56.8000
56.8000

v3
19.9997
20.4995
23.5647

v4
56.4172
57.5490
70.0002

v5
25.6000
25.6000
25.6000

v6
37.9059
35.9943
39.5194

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≤n5≤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;n5: the refractive power of the fifth 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 plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material.
3. The camera optical lens as described in claim 1 further satisfying the following conditions: 1.119≤f1/f≤9.06;1.723≤n1≤2.164;1.703≤n5≤2.147.
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: −145.41≤(R1+R2)/(R1−R2)≤−4.52;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;TTL: the total optical length of the camera optical lens.
5. The camera optical lens as described in claim 4 further satisfying the following conditions: −90.88≤(R1+R2)/(R1−R2)≤−5.65;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; the camera optical lens further satisfies the following conditions: 0.63≤f2/f≤3.99;−4.92≤(R3+R4)/(R3−R4)≤−0.65;0.04≤d3/TTL≤0.17; 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: 1.01≤f2/f≤3.19;−3.08≤(R3+R4)/(R3−R4)≤−0.81;0.06≤d3/TTL≤0.14.
8. The camera optical lens as described in claim 1, wherein the third lens has a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: f3/f≥43.58;0.02≤d5/TTL≤0.07; wheref: the focal length of the camera optical lens;f3: the focal length 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: f3/f≥69.73;0.04≤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: 0.55≤f4/f≤2.00;1.29≤(R7+R8)/(R7−R8)≤4.66;0.05≤d7/TTL≤0.18; 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: 0.88≤f4/f≤1.60;2.06≤(R7+R8)/(R7−R8)≤3.72;0.09≤d7/TTL≤0.15.
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: −1.61≤f5/f≤−0.50;−5.27≤(R9+R10)/(R9−R10)≤−1.35;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: −1.01≤f5/f≤−0.62;−3.30≤(R9+R10)/(R9−R10)≤−1.69;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: 0.70≤f6/f≤2.58;−46.05≤(R11+R12)/(R11−R12)≤−10.07;0.09≤d11/TTL≤0.28; wheref: the focal length of the camera optical lens;f6: the focal length of the sixth lens;R11: the curvature radius of the object side surface of the sixth lens;R12: the curvature radius of the image side surface of the sixth lens;d11: the thickness on-axis of the sixth lens;TTL: the total optical length of the camera optical lens.
15. The camera optical lens as described in claim 14 further satisfying the following conditions: 1.12≤f6/f≤2.06;−28.78≤(R11+R12)/(R11−R12)≤—12.58;0.15≤d11/TTL≤0.23.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.54≤f12/f≤1.73; 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: 0.86≤f12/f≤1.38.
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 6.06 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
201810387949.X	Apr 2018	CN	national
201810388560.7	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)