Camera Optical Lens

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201810924580.1 and Ser. No. 201810925252.3 filed on Aug. 14, 2018, the entire content of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

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

DESCRIPTION OF RELATED ART

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

BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

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

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

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

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

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

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

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

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

Embodiment 1

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

The first lens L1 is made of plastic material, the second lens L2 is made of glass 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 plastic material, the sixth lens L6 is made of glass material.

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, condition −3 custom-character f1/f−1.5 fixes the negative 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 negative 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 negative refractive power of the first lens becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, −2.821 custom-character f1/f−1.543.

Condition 1.7 custom-character n22.2 fixes the refractive index n2 of the second lens L2, refractive index 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, 1.701 n22.051.

Condition 1.7 custom-character n62.2 fixes the refractive index n6 of the sixth lens L6, refractive index 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, 1.710 n62.041

Condition 0.03 custom-character d3/TTL0.058 fixes the ratio between the thickness d3 on-axis of the second lens L2 and the total optical length TTL from the object side surface of the first lens L1 to the image plane along the optic axis of the camera optical lens 10, a ratio within this range can benefit the ultra-thin development of lenses. Preferably, the following condition shall be satisfied, 0.041 custom-character d3/TTL0.058.

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 negative refractive power; the curvature radius of the object side surface of the first lens L1 is R1, the curvature radius of image side surface of the first lens L1 is R2, by meeting the condition 1.61 custom-character (R1+R2)/(R1−R2)10.43 the shape of the first lens can be reasonably controlled so that the system spherical aberration of the first lens can be effectively corrected. Preferably, the condition 2.58 (R1+R2)/(R1−R2)8.35 shall be satisfied.

The thickness on-axis of the first lens L1 is d1, they satisfy the following condition: 0.02 custom-character d1/TTL0.07, when the condition is meet, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04 d1/TTL0.05 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 a positive 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 curvature radius of the object side surface of the second lens L2 is R3, the curvature radius of image side surface of the second lens L2 is R4 and the thickness on-axis of the second lens L2 is d3, they satisfy the following condition: 0.65 custom-character f2/f2.42, when the condition is met, 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 negative refractive power and the field curvature of the system then can be reasonably and effectively balanced; the condition −6.08 custom-character (R3+R4)/(R3−R4) −1.91 fixes the shape of the second lens L2, when value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like on-axis chromatic aberration is difficult to be corrected. Preferably, the following conditions shall be satisfied, 1.05 custom-character f2/f1.94; −3.80 (R3+R4)/(R3−R4)−2.38.

In this embodiment, the object side surface of the third lens L3 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 focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3, the curvature radius of the object side surface of the third lens L3 is R5, the curvature radius of the image side surface of the third lens L3 is R6 and the thickness on-axis of the third lens L3 is d5, they satisfy the condition: 0.64 custom-character f3/f2.22, by meeting this condition, it is helpful for the system to obtain good ability in balancing the field curvature, so that the image quality can be effectively improved; by meeting the condition −2.78 (R5+R6)/(R5−R6)−0.56 the shape of the third lens L3 can be effectively controlled, it is beneficial for the shaping of the third lens L3 and bad shaping and stress generation due to extra large curvature of surface of the third lens L3 can be avoided; when the condition 0.04 custom-character d5/TTL0.15 is met, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied: 1.02 f3/f1.78; −1.74 (R5+R6)/(R5−R6)−0.70; 0.07d5/TTL0.12.

In this embodiment, the object side surface of the fourth lens L4 is a concave surface relative to the proximal axis, and its image side surface is a convex surface relative to the proximal axis, and it has a positive 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 curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8 and the thickness on-axis of the fourth lens L4 is d7, they satisfy the condition: 0.88 custom-character f4/f2.85, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition 0.97 (R7+R8)/(R7−R8)3.17 fixes the shape 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; when the condition 0.04 custom-character d7/TTL0.12 is met, it is beneficial for realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, 1.42 f4/f2.20; 1.55 (R7+R8)/(R7−R8)2.54; 0.06 d7/TTL0.09.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, and its image side surface is a convex surface relative to the proximal axis, and it has a negative 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 curvature radius of the object side surface of the fifth lens L5 is R9, the curvature radius of the image side surface of the fifth lens L5 is R10 and the thickness on-axis of the fifth lens L5 is d9, they satisfy the condition: −3.29 custom-character f5/f−0.95, the limitation on the fifth lens L5 can effectively make the light angle of the camera lens flat and the tolerance sensitivity reduces; the condition −11.54 (R9+R10)/(R9−R10)−3.47 fixes the shape 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 off-axis chromatic aberration is difficult to be corrected; when the condition 0.03 custom-character d9/TTL0.08 is met, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied: −2.06 f5/f−1.18; −7.21 (R9+R10)/(R9−R10)−4.34; 0.04 d9/TTL0.07.

In this embodiment, the object side surface of the sixth lens L6 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 focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6, the curvature radius of the object side surface of the sixth lens L6 is R11, the curvature radius of the image side surface of the sixth lens L6 is R12 and the thickness on-axis of the sixth lens L6 is d11, they satisfy the condition: 2.38 custom-character f6/f53.68, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition 4.81 (R11+R12)/(R11−R12)38.39 fixes the shape of the sixth lens L6, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, the problem like off-axis chromatic aberration is difficult to be corrected; when the condition 0.10 custom-character d11/TTL0.33, is met, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, 3.81 f6/f42.94; 7.70 (R11−R12)/(R11−R12)30.72; 0.17d11/TTL0.27.

In this embodiment, the focal length of the whole camera optical lens 10 is f, a focal length of the first lens and the second lens combined is f12, they satisfy the condition: 2.46 custom-character f12/f14.64. Hence, the chromatic aberration and the distortion of the camera optical lens can be eliminated, the back focal length of the camera optical lens can be suppressed, and the miniaturization of the camera optical lens can be sustained. Preferably, the following conditions shall be satisfied, 3.93 custom-character f12/f11.71.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.17 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 4.94 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 2.22.

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 total distance from the object side surface of the first lens L1 to the image plane along the optic axis).

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 =
−0.120

R1
1.585
d1 =
0.209
nd1
1.671
ν1
19.243

R2
1.186
d2 =
0.101

R3
1.993
d3 =
0.270
nd2
1.702
ν2
41.239

R4
3.948
d4 =
0.115

R5
2.292
d5 =
0.416
nd3
1.545
ν3
55.987

R6
14.102
d6 =
0.357

R7
−6.983
d7 =
0.358
nd4
1.535
ν4
56.093

R8
−2.223
d8 =
0.470

R9
−0.729
d9 =
0.256
nd5
1.671
ν5
19.243

R10
−1.075
d10 =
0.030

R11
1.916
d11 =
1.047
nd6
1.720
ν6
41.978

R12
1.772
d12 =
0.761

R13
∞
d13 =
0.210
ndg
1.517
νg
64.167

R14
∞
d14 =
0.100

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 seventh lens L7;

R14: The curvature radius of the image side surface of the seventh lens L7;

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 seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;

nd: The refractive index of the d line;

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

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

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

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

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

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

ndg: The refractive index 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
−1.5811E+00
−1.3233E−01
1.4603E−01
−1.9325E−01
1.6846E−02
1.8122E−01
1.2108E−01
−2.8180E−01

R2
−2.3493E+00
−1.3911E−01
2.3685E−01
−1.6341E−01
−3.6442E−01
2.4341E−01
7.8048E−01
−8.4112E−01

R3
2.5659E+00
−1.8366E−01
2.2607E−01
−1.2629E−01
−1.4265E−01
−1.0464E−01
−6.3672E−02
2.7315E−01

R4
−1.0503E+02
4.0404E−02
1.3694E−02
1.7016E−01
6.4834E−02
−4.3759E−01
−4.2912E−01
8.2968E−01

R5
4.3671E−01
−1.4163E−01
2.3605E−01
−1.6618E−01
−5.3424E−02
1.7481E−02
9.4277E−02
−1.5675E−01

R6
−5.2603E+01
−1.0168E−01
−3.1763E−02
−1.8606E−02
−2.2816E−02
2.6149E−02
−2.4513E−02
−4.0378E−02

R7
2.6440E+00
−1.4159E−01
−5.4512E−02
−1.5799E−02
−2.1074E−02
8.3737E−02
7.5342E−02
−5.6623E−02

R8
2.7413E+00
−6.8638E−02
8.3850E−03
−3.2204E−03
−4.0724E−03
3.1526E−02
3.0316E−02
−1.1810E−02

R9
−3.5923E+00
−6.1779E−02
−1.3632E−02
−7.7234E−03
9.1540E−03
1.9500E−03
−6.5685E−03
−1.8536E−03

R10
−2.9632E+00
−8.3783E−03
−1.1743E−02
6.9630E−03
2.8602E−03
1.1371E−03
6.8053E−04
−1.2802E−04

R11
−1.8927E+01
−1.1023E−01
1.5656E−02
1.0438E−03
7.9441E−05
−1.6211E−05
−1.6527E−05
2.0684E−06

R12
−6.8539E+00
−5.3044E−02
1.2305E−02
−2.1541E−03
1.5335E−04
2.5522E−06
−7.0944E−07
−3.0936E−08

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

IH: Image height

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

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

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

TABLE 3

inflexion

point number
inflexion point position 1
inflexion point position 2

P1R1
0

P1R2
1
0.685

P2R1
1
0.715

P2R2
0

P3R1
1
0.725

P3R2
1
0.235

P4R1
1
0.875

P4R2
1
0.925

P5R1
0

P5R2
1
0.955

P6R1
2
0.415
1.535

P6R2
1
0.685

TABLE 4

arrest point number
arrest point position 1

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
1
0.395

P4R1
0

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.825

P6R2
1
1.465

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470.0 nm, 555.0 nm and 650.0 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 555.0 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 examples 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 1.520 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 82.50°, 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.

FIG. 5 is a schematic diagram of a camera optical lens 20 in accordance with a second embodiment of the present invention.

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 =
−0.110

R1
1.887
d1 =
0.215
nd1
1.671
ν1
19.243

R2
1.297
d2 =
0.086

R3
2.103
d3 =
0.255
nd2
1.801
ν2
34.967

R4
4.362
d4 =
0.041

R5
2.638
d5 =
0.457
nd3
1.545
ν3
55.987

R6
−50.386
d6 =
0.509

R7
−6.185
d7 =
0.371
nd4
1.535
ν4
56.093

R8
−2.191
d8 =
0.414

R9
−0.749
d9 =
0.252
nd5
1.671
ν5
19.243

R10
−1.086
d10 =
0.030

R11
2.122
d11 =
1.014
nd6
1.800
ν6
42.225

R12
1.834
d12 =
0.747

R13
∞
d13 =
0.210
ndg
1.517
νg
64.167

R14
∞
d14 =
0.100

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
−2.5006E+00
−1.5074E−01
1.7427E−01
−2.1633E−01
1.4691E−01
8.2133E−02
−1.1831E−01
1.5853E−02

R2
−2.6890E+00
−1.6164E−01
2.1027E−01
−6.7202E−02
−3.4949E−01
1.1378E−01
6.4296E−01
−4.7071E−01

R3
3.2910E+00
−1.3142E−01
1.8456E−01
−2.2326E−01
−8.6966E−02
−2.4112E−02
−1.3290E−01
2.6829E−01

R4
−1.1423E+02
1.1800E−01
3.9413E−02
1.0569E−01
−2.6261E−01
−2.6381E−01
3.1263E−01
1.1317E−01

R5
5.9190E+00
−9.5254E−02
2.4481E−01
−3.1240E−01
−5.4178E−02
1.1361E−01
1.0830E−01
−1.8147E−01

R6
1.2391E+02
−7.9987E−02
−2.5888E−02
−4.7378E−02
−4.0224E−03
3.1609E−03
8.5622E−02
−1.1346E−01

R7
−4.2279E+01
−1.1727E−01
−4.9451E−02
−2.8796E−02
−2.2574E−02
5.7693E−02
4.4114E−02
−3.0828E−02

R8
2.2671E+00
−5.2966E−02
1.1175E−02
−2.2500E−02
−1.2881E−02
2.8670E−02
2.8951E−02
−1.2793E−02

R9
−3.4708E+00
−8.3119E−02
−4.7285E−03
−1.5842E−02
1.0327E−02
1.0080E−02
−1.2341E−03
−7.1985E−03

R10
−2.6553E+00
−2.0123E−02
−1.0293E−02
8.8199E−03
3.1646E−03
1.2078E−03
6.1076E−04
−3.9624E−04

R11
−2.1464E+01
−1.0894E−01
1.7966E−02
6.8163E−04
7.7965E−05
−1.6962E−05
−2.6880E−05
3.5990E−06

R12
−7.3414E+00
−5.2509E−02
1.1873E−02
−2.0830E−03
1.5818E−04
1.6034E−06
−8.5124E−07
1.0730E−08

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

TABLE 7

inflexion

point number
inflexion point position 1
inflexion point position 2

P1R1
0

P1R2
0

P2R1
1
0.685

P2R2
0

P3R1
1
0.765

P3R2
0

P4R1
1
0.945

P4R2
1
0.975

P5R1
0

P5R2
1
0.975

P6R1
2
0.415
1.545

P6R2
1
0.675

TABLE 8

arrest point number
arrest point position 1

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
0

P4R1
0

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.805

P6R2
1
1.435

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470.0 nm, 555.0 nm and 650.0 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 555.0 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 1.668 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 82.58°, 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.

FIG. 9 is a schematic diagram of a camera optical lens 30 in accordance with a third embodiment of the present invention.

The design information of the camera optical lens 30 in the third embodiment of the present invention is shown in the tables 9 and 10.

TABLE 9

R
d
nd
νd

S1
∞
d0 =
−0.050

R1
3.051
d1 =
0.215
nd1
1.671
ν1
19.243

R2
1.606
d2 =
0.047

R3
2.151
d3 =
0.240
nd2
1.903
ν2
31.005

R4
4.424
d4 =
0.032

R5
2.537
d5 =
0.467
nd3
1.545
ν3
55.987

R6
−29.006
d6 =
0.510

R7
−6.101
d7 =
0.349
nd4
1.535
ν4
56.093

R8
−2.184
d8 =
0.520

R9
−0.781
d9 =
0.238
nd5
1.671
ν5
19.243

R10
−1.108
d10 =
0.030

R11
2.250
d11 =
0.983
nd6
1.883
ν6
40.765

R12
1.827
d12 =
0.760

R13
∞
d13 =
0.210
ndg
1.517
νg
64.167

R14
∞
d14 =
0.100

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
−3.0689E+00
−1.5988E−01
2.1801E−01
−2.1405E−01
1.3532E−01
7.3407E−02
−1.0321E−01
−9.6462E−03

R2
−4.9905E+00
−1.7831E−01
2.5511E−01
−1.2907E−01
−4.0445E−01
2.6762E−01
8.6479E−01
−9.2697E−01

R3
3.8614E+00
−1.3597E−01
1.3540E−01
−2.4460E−01
−7.4386E−02
−6.3169E−02
−2.1103E−01
3.8084E−01

R4
−9.8251E+01
1.4158E−01
4.2008E−02
5.1197E−02
−2.8729E−01
−3.2817E−01
2.8395E−01
3.3254E−01

R5
4.1705E+00
−8.7324E−02
2.5282E−01
−3.0858E−01
−7.5703E−02
1.0763E−01
1.2108E−01
−2.2856E−01

R6
7.2614E+01
−8.8522E−02
−4.9827E−02
−4.7301E−02
3.2981E−02
7.4172E−03
6.1916E−02
−1.6232E−01

R7
−4.3727E+01
−1.0912E−01
−3.7001E−02
−2.6163E−02
−1.9434E−02
8.4880E−02
5.0192E−02
−4.6125E−02

R8
2.3250E+00
−4.0974E−02
1.5059E−02
−1.8510E−02
−6.0905E−03
2.8316E−02
3.4586E−02
−7.1309E−03

R9
−3.9047E+00
−8.4931E−02
−4.9835E−04
−1.8796E−02
7.3509E−03
8.3201E−03
−1.5907E−03
−4.5109E−03

R10
−2.9140E+00
−1.6972E−02
−1.1587E−02
7.7750E−03
3.0197E−03
1.1324E−03
4.9447E−04
−4.8189E−04

R11
−2.5447E+01
−1.0365E−01
1.7028E−02
6.8614E−04
6.0782E−05
−3.0648E−05
−2.3623E−05
3.5317E−06

R12
−8.5741E+00
−5.2145E−02
1.1808E−02
−2.0732E−03
1.6748E−04
8.9933E−07
−1.0362E−06
3.1635E−08

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

TABLE 11

inflexion

point number
inflexion point position 1
inflexion point position 2

P1R1
0

P1R2
1
0.595

P2R1
1
0.625

P2R2
2
0.715
0.775

P3R1
1
0.715

P3R2
0

P4R1
1
0.875

P4R2
1
0.895

P5R1
0

P5R2
1
0.995

P6R1
2
0.405
1.595

P6R2
1
0.645

TABLE 12

arrest point number
arrest point position 1

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
0

P4R1
0

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.795

P6R2
1
1.395

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470.0 nm, 555.0 nm and 650.0 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 555.0 nm passes the camera optical lens 30 in the third embodiment.

The following table 13, in accordance with the above conditions, lists the values in this embodiment corresponding with each condition expression. Apparently, the camera optical system of this embodiment satisfies the above conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.525 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 82.22°, 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
3.344
3.335
3.355

f1
−8.835
−7.171
−5.323

f2
5.406
4.800
4.391

f3
4.948
4.604
4.293

f4
5.917
6.122
6.142

f5
−4.752
−5.109
−5.521

f6
15.915
29.605
120.056

f12
16.431
17.202
32.735

(R1 + R2)/(R1 − R2)
6.954
5.393
3.222

(R3 + R4)/(R3 − R4)
−3.040
−2.861
−2.893

(R5 + R6)/(R5 − R6)
−1.388
−0.900
−0.839

(R7 + R8)/(R7 − R8)
1.934
2.098
2.115

(R9 + R10)/(R9 − R10)
−5.203
−5.450
−5.772

(R11 + R12)/(R11 − R12)
25.597
13.742
9.628

f1/f
−2.642
−2.150
−1.587

f2/f
1.616
1.439
1.309

f3/f
1.480
1.380
1.280

f4/f
1.769
1.836
1.831

f5/f
−1.421
−1.532
−1.646

f6/f
4.759
8.876
35.785

f12/f
4.913
5.157
9.758

d1
0.209
0.215
0.215

d3
0.270
0.255
0.240

d5
0.416
0.457
0.467

d7
0.358
0.371
0.349

d9
0.256
0.252
0.238

d11
1.047
1.014
0.983

Fno
2.200
2.000
2.200

TTL
4.700
4.700
4.700

d1/TTL
0.044
0.046
0.046

d3/TTL
0.057
0.054
0.051

d5/TTL
0.088
0.097
0.099

d7/TTL
0.076
0.079
0.074

d9/TTL
0.054
0.054
0.051

d11/TTL
0.223
0.216
0.209

n1
1.671
1.671
1.671

n2
1.702
1.801
1.903

n3
1.545
1.545
1.545

n4
1.535
1.535
1.535

n5
1.671
1.671
1.671

n6
1.720
1.800
1.883

v1
19.243
19.243
19.243

v2
41.239
34.967
31.005

v3
55.987
55.987
55.987

v4
56.093
56.093
56.093

v5
19.243
19.243
19.243

v6
41.978
42.225
40.765

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: −3f1/f−1.5;1.7n22.2;1.7n62.2;0.03d3/TTL0.058; wheref: the focal length of the camera optical lens;f1: the focal length of the first lens;n2: the refractive index of the second lens;n6: the refractive index of the sixth lens;d3: the thickness on-axis of the second lens;TTL: the total distance from the object side surface of the first lens to the image plane along the optic axis.
2. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of glass material.
3. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: −2.821f1/f−1.543;1.701n22.051;1.710n62.041;0.041d3/TTL0.058.
4. The camera optical lens as described in claim 1, wherein the first lens has a negative refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 1.61(R1+R2)/(R1−R2)10.43;0.02d1/TTL0.07; whered1: the thickness on-axis of the first lens;R1: the curvature radius of the object side surface of the first lens;R2: the curvature radius of the image side surface of the first lens;TTL: the total distance from the object side surface of the first lens L1 to the image plane along the optic axis.
5. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: 2.58(R1+R2)/(R1−R2)8.35;0.04d1/TTL0.05.
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: 0.65f2/f2.42;−6.08(R3+R4)/(R3−R4)−1.91; wheref: the focal length of the camera optical lens;f2: the focal length of the second lens;R3: the curvature radius of the object side surface of the second lens;R4: the curvature radius of the image side surface of the second lens.
7. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: 1.05f2/f1.94;−3.80(R3+R4)/(R3−R4)−2.38.
8. The camera optical lens as described in claim 1, wherein the third lens has a convex image side surface; wherein the camera optical lens further satisfies the following conditions: 0.64f3/f2.22;−2.78(R5+R6)/(R5−R6)−0.56;0.04d5/TTL0.15; 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 distance from the object side surface of the first lens L1 to the image plane along the optic axis.
9. The camera optical lens as described in claim 8, wherein the camera optical lens further satisfies the following conditions: 1.02f3/f1.78;−1.74(R5+R6)/(R5−R6)−0.70;0.07d5/TTL0.12.
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; wherein the camera optical lens further satisfies the following conditions: 0.88f4/f2.75;0.97(R7+R8)/(R7−R8)3.17;0.04d7/TTL0.12; where
11. The camera optical lens as described in claim 8, wherein the camera optical lens further satisfies the following conditions: 1.42f4/f2.20;1.55(R7+R8)/(R7−R8)2.54;0.06d7/TTL0.09.
12. The camera optical lens as described in claim 1, wherein the fifth lens has a negative refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: −3.29f5/f−0.95;−11.54(R9+R10)/(R9−R10)−3.47;0.03d9/TTL0.08; 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 distance from the object side surface of the first lens L1 to the image plane along the optic axis.
13. The camera optical lens as described in claim 12, wherein the camera optical lens further satisfies the following conditions: −2.06f5/f−1.18;−7.21(R9+R10)/(R9−R10)−4.34;0.04d9/TTL0.07.
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: 2.38f6/f53.68;4.81(R11+R12)/(R11−R12)38.39;0.10d11/TTL0.33; 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 distance from the object side surface of the first lens L1 to the image plane along the optic axis.
15. The camera optical lens as described in claim 14, wherein the camera optical lens further satisfies the following conditions: 3.81f6/f42.94;7.70(R11+R12)/(R11−R12)30.72;0.17d11/TTL0.27.
16. The camera optical lens as described in claim 1, wherein the focal length of the camera optical lens is f, a focal length of the first lens and the second lens combined is f12, the camera optical lens further satisfies the following conditions: 2.46f12/f14.64.
17. The camera optical lens as described in claim 15, wherein the focal length of the camera optical lens is f, a focal length of the first lens and the second lens combined is f12, the camera optical lens further satisfies the following conditions: 3.93f12/f11.71.
18. The camera optical lens as described in claim 1, wherein the total distance from the object side surface of the first lens to the image plane along the optic axis TTL of the camera optical lens is less than or equal to 5.17 mm.
19. 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 2.27.
20. The camera optical lens as described in claim 19, wherein the aperture F number of the camera optical lens is less than or equal to 2.22.

Priority Claims (2)

Number	Date	Country	Kind
201810924580.1	Aug 2018	CN	national
201810925252.3	Aug 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)