Camera optical lens

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 7 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, a sixth lens L6 and a seventh lens L7. Optical element like optical filter GF can be arranged between the seventh lens L7 and the image surface Si. The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of glass material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of glass material, the sixth lens L6 is made of plastic material, the seventh lens L7 is made of plastic 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, the curvature radius of the object side surface of the first lens is defined as R1, the curvature radius of the image side surface of the first lens is defined as R2, the refractive power of the third length is n3, the refractive power of the fifth lens is n5, the focal length of the sixth lens is f6, the focal length of the seventh lens is f7. The camera optical lens 10 satisfies the following conditions: −3 custom character f1/f−1, 1.7n32.2, 1f6/f710; 2(R1+R2)/(R1−R2)10; 1.7n52.2.

Condition −3 custom character f1/f−1 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 L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, −2.99 custom character f1/f−1.08.

Condition 1.7 custom character n32.2 fixes the refractive power of the third lens L3, 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, 1.71n32.04.

Condition 1 custom character f6/f710 fixes the ratio between the focal length f6 of the sixth lens L6 and the focal length f7 of the seventh lens L7, a ratio within this range can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the following condition shall be satisfied, 1.05 custom character f6/f79.99.

Condition 2 custom character (R1+R2)/(R1−R2)10 fixes the shape of the first lens L1, when the value is beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the condition 2.41 custom character (R1+R2)/(R1−R2)9.5 shall be satisfied.

Condition 1.7 custom character n52.2 fixes the refractive power of the fifth lens L5, 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, 1.71n52.00.

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 negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the first lens L1 is f1, the thickness on-axis of the first lens L1 is d1: they satisfy the following condition: 0.11 custom character d10.37, when the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.17d10.29 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 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: 0.48 custom character f2/f1.69, 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 −2.85 custom character (R3+R4)/(R3−R4)−0.88 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; if the condition 0.21d30.92 is met, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, 0.77 custom character f2/f1.35; −1.78(R3+R4)/(R3−R4)−1.10; 0.34d30.74.

In this embodiment, the object side surface of the third lens L3 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 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: −0.92 custom character f3/f3.92, 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 −4.77(R5+R6)/(R5−R6)−0.02 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 0.16 custom character d50.63 is met, it is beneficial for the realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, 1.48f3/f3.13; −2.98(R5+R6)/(R5−R6)−0.02; 0.26d50.50.

In this embodiment, 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: −24.22 custom character f4/f11.69, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition −60.46(R7+R8)/(R7−R8)15.80 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 0.13 custom character d71.03 is met, it is beneficial for realization of ultra-thin lenses. Preferably, the following conditions shall be satisfied, −15.14f4/f9.35; −37.79(R7+R8)/(R7−R8)12.64; 0.2d70.82.

In this embodiment, the object side surface of the fifth lens L5 is a concave surface relative to the proximal axis, its image side surface is a convex surface relative to the proximal axis, and it has positive refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the 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: 0.26 custom character f5/f1.17, 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 0.86(R9+R10)/(R9−R10)3.46 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 0.23 custom character d0.83 is met, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, 0.42f5/f0.93; 1.38(R9+R10)/(R9−R10)2.77; 0.37d90.66.

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 negative refractive power; the focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6, the 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: −16.10 custom character f6/f−0.73, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; the condition 0.58(R11+R12)/(R11−R12)3.71 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 0.71 custom character d110.91, is met, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, −10.06f6/f−0.91; 0.92(R11+R12)/(R11−R12)2.97; 0.27d110.73.

In this embodiment, the object side surface of the seventh lens L7 is a convex surface relative to the proximal axis, its image side surface is a concave surface relative to the proximal axis, and it has negative refractive power; the focal length of the whole camera optical lens 10 is f, the curvature radius of the object side surface of the seventh lens L7 is R13, the curvature radius of the image side surface of the seventh lens is R14. The focal length of the seventh lens L7 is f7, and the thickness on-axis of the seventh lens L7 is d13, they satisfy the condition: 0.95 custom character (R13+R14)/(R13−R14)5.47, which fixes the shape of the seventh lens L7, 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 −1.99f7/f−0.54 is met, appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity; when the condition 0.12 custom character d130.45 is met, it is beneficial for the realization of ultra-thin lens. Preferably, the following conditions shall be satisfied, 1.52(R13+R14)/(R13−R14)4.37; −1.24f7/f−0.67; 0.20d130.36.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.25 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 5.96.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.25. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.20.

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

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

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

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
vd

S1
∞
d0=
−0.050

R1
1.832
d1=
0.245
nd1
1.6509
v1
21.52

R2
1.292
d2=
0.101

R3
2.039
d3=
0.428
nd2
1.5352
v2
56.09

R4
14.721
d4=
0.060

R5
5.857
d5=
0.420
nd3
1.7130
v3
53.94

R6
42.427
d6=
0.592

R7
5.530
d7=
0.350
nd4
1.6509
v4
21.52

R8
4.571
d8=
0.619

R9
−4.283
d9=
0.510
nd5
1.7130
v5
53.94

R10
−1.134
d10=
0.030

R11
29.427
d11=
0.354
nd6
1.5346
v6
56.07

R12
2.105
d12=
0.030

R13
1.654
d13=
0.245
nd7
1.6509
v7
21.52

R14
0.942
d14=
0.728

R15
∞
d15=
0.210
ndg
1.5168
vg
64.17

R16
∞
d16=
0.500

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;

R15: The curvature radius of the object side surface of the optical filter GF;

R16: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the 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;

d15: The thickness on-axis of the optical filter GF;

d16: 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;

nd7: The refractive power of the d line of the seventh lens L7;

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;

v7: The abbe number of the seventh lens L7;

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
−4.8755E+00
−5.2200E−02
2.7069E−02
−6.5489E−03
−4.0455E−02
4.2687E−02
−1.0043E−02
−1.2158E−03

R2
−4.2404E+00
−1.1718E−02
−1.3591E−02
1.7403E−03
−4.6742E−03
−1.4881E−02
1.2859E−02
3.2499E−03

R3
−2.1256E+00
−4.7079E−02
2.4533E−02
6.6681E−03
−2.4237E−02
−1.5080E−03
5.8868E−03
−9.8693E−04

R4
0.0000E+00
−4.2538E−02
4.0933E−02
−1.4897E−04
1.6052E−02
−7.7754E−03
−1.1321E−02
1.6596E−04

R5
0.0000E+00
−3.4461E−02
2.4095E−02
8.4711E−03
−1.5395E−03
−1.5328E−03
−7.3700E−05
−6.3566E−04

R6
0.0000E+00
−4.9934E−02
1.1016E−02
−9.5356E−03
3.9363E−03
1.4596E−03
6.3450E−04
−1.7965E−04

R7
0.0000E+00
−1.1643E−01
1.2008E−02
−8.1005E−03
8.7077E−03
−2.2262E−03
2.5397E−05
7.1124E−05

R8
0.0000E+00
−9.9764E−02
1.6461E−02
−3.4740E−03
1.4666E−03
1.0141E−03
−4.0699E−04
−4.6574E−05

R9
5.8082E+00
−3.4312E−03
2.1333E−02
−4.7301E−03
4.0359E−04
5.7554E−05
4.4874E−05
−2.3807E−05

R10
−4.8795E+00
−5.1118E−02
3.6064E−02
−3.6330E−03
−4.9979E−04
−1.2812E−07
2.2118E−05
−2.7175E−06

R11
0.0000E+00
−1.7670E−02
1.9786E−03
−1.1986E−04
−7.6706E−06
−2.4752E−05
1.3505E−05
−1.5916E−06

R12
−1.6135E+01
−6.1088E−03
−3.0386E−03
1.9682E−04
1.4067E−05
−9.9897E−06
2.2876E−07
4.3772E−08

R13
−6.0356E+00
−2.8656E−02
4.9228E−04
2.8051E−04
−2.6248E−06
−9.9604E−07
−3.8887E−07
2.3730E−08

R14
−4.4397E+00
−3.4973E−02
4.6824E−03
−2.8135E−04
7.5298E−06
9.5466E−07
−1.7024E−07
−1.5473E−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, R1 and R2 represent respectively the object side surface and image side surface of the first lens L1, R3 and R4 represent respectively the object side surface and image side surface of the second lens L2, R5 and R6 represent respectively the object side surface and image side surface of the third lens L3, R7 and R8 represent respectively the object side surface and image side surface of the fourth lens L4, R9 and R10 represent respectively the object side surface and image side surface of the fifth lens L5, R11 and R12 represent respectively the object side surface and image side surface of the sixth lens L6, R13 and R14 represent respectively the object side surface and image side surface of the seventh lens L7. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3

inflexion
inflexion
inflexion
inflexion

point
point
point
point

number
position 1
position 2
position 3

R1
1
0.745

R2
2
0.755
0.955

R3
1
0.845

R4
1
0.935

R5
1
1.125

R6
2
0.205
1.055

R7
1
0.375

R8
1
0.455

R9
0

R10
1
0.935

R11
3
0.415
1.915
1.995

R12
1
0.805

R13
1
0.785

R14
1
0.745

TABLE 4

arrest
arrest
arrest

point
point
point

number
position 1
position 2

R1
0

R2
0

R3
0

R4
1
1.045

R5
0

R6
1
0.345

R7
1
0.645

R8
1
0.805

R9
0

R10
0

R11
1
0.725

R12
1
1.575

R13
1
1.635

R14
1
2.235

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 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 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 1.804 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.78°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5

R
d
nd
vd

S1
∞
d0=
−0.120

R1
1.287
d1=
0.210
nd1
1.6509
v1
21.52

R2
1.029
d2=
0.105

R3
1.697
d3=
0.615
nd2
1.5352
v2
56.09

R4
9.716
d4=
0.212

R5
4.930
d5=
0.372
nd3
1.8014
v3
45.45

R6
12.061
d6=
0.359

R7
−4.343
d7=
0.685
nd4
1.6355
v4
23.97

R8
−21.151
d8=
0.354

R9
−3.922
d9=
0.552
nd5
1.7290
v5
54.04

R10
−1.205
d10=
0.030

R11
7.270
d11=
0.332
nd6
1.5352
v6
56.09

R12
2.996
d12=
0.050

R13
1.921
d13=
0.260
nd7
1.6509
v7
21.52

R14
0.946
d14=
0.654

R15
∞
d15=
0.210
ndg
1.5168
vg
64.17

R16
∞
d16=
0.500

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

TABLE 6

Conic Index
Aspherical Surface Index

k
A4
A6
A8
A10
A12
A14
A16

R1
−1.9626E+00
−2.9980E−02
−5.8305E−03
−9.7413E−03
−4.8358E−02
5.0941E−02
−1.7228E−02
−4.3179E−03

R2
−2.2913E+00
1.4776E−02
−6.0685E−02
−4.1612E−04
1.7588E−03
−2.7686E−02
5.0855E−03
4.5978E−03

R3
−1.0530E+00
−3.3250E−02
6.4227E−03
3.9312E−02
−1.2573E−02
7.3831E−03
2.1472E−03
−1.8236E−03

R4
−1.1960E+02
−7.2735E−02
3.5130E−02
1.2856E−02
6.0555E−02
−1.2724E−02
6.8151E−03
6.2686E−03

R5
−1.7390E+01
−6.2981E−02
−1.5216E−02
4.1939E−02
7.2405E−03
−9.4723E−03
−2.9948E−03
−2.4337E−03

R6
−1.5118E+02
−6.7297E−02
−2.1613E−02
6.9081E−03
6.3795E−03
3.2399E−03
−1.0135E−02
2.5328E−03

R7
1.0575E+01
−1.0120E−01
−1.3351E−02
6.2454E−03
−3.6946E−03
−6.0721E−03
5.4767E−03
4.3850E−03

R8
−5.3412E+00
−7.2053E−02
2.7367E−02
−1.0718E−02
2.0511E−03
5.0501E−04
−5.4906E−04
1.8901E−04

R9
2.6450E+00
−3.3001E−04
1.9761E−02
−4.5184E−03
−2.0883E−07
−3.2996E−04
1.4860E−06
3.7458E−05

R10
−4.8705E+00
−5.8566E−02
3.7366E−02
−4.3220E−03
−5.1469E−04
−4.7663E−05
1.5409E−05
1.0544E−05

R11
0.0000E+00
−2.5409E−02
1.5026E−03
3.9021E−04
1.9774E−05
−9.1806E−06
−4.9126E−07
1.2440E−07

R12
−4.0028E+00
−1.6570E−02
−2.3016E−03
5.9524E−04
−7.4472E−05
−8.6964E−07
5.4862E−07
2.2469E−08

R13
−5.1184E+00
−3.5952E−02
3.3052E−03
−2.8615E−04
1 .9365E−05
3.5633E−06
−8.6060E−07
2.0703E−08

R14
−4.6865E+00
−3.5073E−02
3.8208E−03
1.2018E−05
−1.3182E−05
−3.7022E−06
4.6118E−07
−1.5207E−08

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in embodiment 2 of the present invention.

TABLE 7

inflexion
inflexion
inflexion
inflexion

point
point
point
point

number
position 1
position 2
position 3

R1
1
0.745

R2
1
0.715

R3
0

R4
2
0.345
0.605

R5
3
0.475
0.845
0.905

R6
1
0.295

R7
0

R8
0

R9
0

R10
1
0.995

R11
2
0.715
1.645

R12
1
0.965

R13
1
0.795

R14
1
0.725

TABLE 8

Arrest
Arrest
Arrest

point
point
point

number
position 1
position 2

R1
0

R2
0

R3
0

R4
0

R5
0

R6
1
0.495

R7
0

R8
0

R9
0

R10
0

R11
2
1.385
1.845

R12
1
1.695

R13
1
1.595

R14
1
2.055

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 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 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 1.779 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.79°, 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.

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
vd

S1
∞
d0=
0.000

R1
2.988
d1=
0.240
nd1
1.6355
v1
23.97

R2
1.421
d2=
0.040

R3
1.822
d3=
0.454
nd2
1.5352
v2
56.09

R4
11.964
d4=
0.060

R5
12.369
d5=
0.323
nd3
1.8820
v3
37.22

R6
−12.975
d6=
0.302

R7
2.151
d7=
0.256
nd4
1.6509
v4
21.52

R8
2.298
d8=
1.241

R9
−4.035
d9=
0.468
nd5
1.8014
v5
45.45

R10
−1.595
d10=
0.030

R11
22.424
d11=
0.606
nd6
1.5346
v6
56.07

R12
9.508
d12=
0.050

R13
4.430
d13=
0.300
nd7
1.6613
v7
20.37

R14
1.381
d14=
0.600

R15
∞
d15=
0.210
ndg
1.5168
vg
64.17

R16
∞
d16=
0.500

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
−1.5249E+01
−8.2793E−02
−1.4681E−03
3.1922E−02
−2.5135E−02
6.0312E−04
5.4351E−03
−1.9429E−03

R2
−4.9578E+00
−6.9854E−02
−1.1777E−02
3.5611E−02
1.5760E−03
−1.2376E−02
−6.9444E−03
−1.2312E−03

R3
2.7560E−01
−1.3705E−01
6.0810E−02
7.4908E−04
−7.2939E−03
6.5481E−03
−4.3677E−03
−2.4170E−03

R4
−1.1739E+02
−7.5368E−02
3.6351E−02
−3.4356E−03
4.1626E−03
−7.8634E−03
1.8061E−03
4.0527E−03

R5
5.1497E+01
−2.9222E−02
9.1631E−03
2.8767E−03
−4.7644E−03
−5.0301E−03
−1.0988E−03
5.7284E−04

R6
0.0000E+00
−2.5980E−02
3.0723E−02
−8.4043E−03
−5.9931E−04
−1.2219E−03
−1.9774E−03
−3.5789E−04

R7
2.0342E−01
−1.1972E−01
3.1322E−02
−1.0296E−02
6.7763E−03
−2.9094E−03
2.1604E−05
−4.7593E−04

R8
2.5511E−01
−8.7650E−02
3.6249E−03
5.0902E−04
2.0499E−03
−4.2015E−04
−8.0458E−04
−7.4815E−05

R9
4.9663E+00
1.6144E−02
2.1959E−02
−5.2364E−03
−3.0898E−04
5.0741E−05
5.9548E−05
−1.2170E−05

R10
−4.7040E+00
−3.4686E−02
3.3817E−02
−4.3144E−03
−6.6203E−04
7.6596E−06
−3.9607E−06
5.0425E−06

R11
8.1331E+01
−1.8553E−02
2.6755E−03
2.2017E−04
1.0834E−05
−3.3074E−05
3.8782E−06
−6.1699E−09

R12
3.9125E+00
−1.3858E−02
−2.9112E−03
1.0227E−04
−2.5156E−05
3.1205E−06
−6.7611E−07
1.8019E−07

R13
−1.1912E+01
−3.2330E−02
−7.1948E−04
3.1181E−04
1.3086E−05
−2.0875E−06
−7.4231E−08
1.0077E−08

R14
−4.5617E+00
−3.7082E−02
5.6521E−03
−3.5437E−04
−3.2983E−06
7.6841E−07
3.1455E−08
−6.1926E−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
point
point

number
position 1
position 2

R1
1
0.475

R2
1
0.645

R3
0

R4
2
0.315
0.895

R5
1
0.625

R6
0

R7
1
0.775

R8
1
0.755

R9
2
0.895
1.195

R10
2
0.915
1.545

R11
2
0.485
1.505

R12
1
0.725

R13
1
0.655

R14
1
0.805

TABLE 12

Arrest
Arrest
Arrest

point
point
point

number
position 1
position 2

R1
1
0.885

R2
0

R3
0

R4
2
0.565
1.015

R5
1
0.915

R6
0

R7
0

R8
0

R9
0

R10
0

R11
1
0.885

R12
1
1.175

R13
1
1.145

R14
1
2.125

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 470 nm, 555 nm and 650 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 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 1.808 mm, the full vision field image height is 2.994 mm, the vision field angle in the diagonal direction is 74.96°, 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 1
Embodiment 1

f
3.878
3.879
3.887

f1
−8.145
−11.588
−4.502

f2
4.357
3.730
3.941

f3
9.453
10.127
7.188

f4
−46.962
−8.674
30.289

f5
2.019
2.191
3.021

f6
−4.246
−9.756
−31.288

f7
−3.857
−3.175
−3.130

f6/f7
1.101
3.073
9.995

(R1 + R2)/(R1 − R2)
5.787
9.000
2.814

(R3 + R4)/(R3 − R4)
−1.322
−1.423
−1.359

(R5 + R6)/(R5 − R6)
−1.320
−2.383
−0.024

(R7 + R8)/(R7 − R8)
10.536
−1.517
−30.230

(R9 + R10)/(R9 − R10)
1.720
1.888
2.308

(R11 + R12)/(R11 − R12)
1.154
2.402
2.472

(R13 + R14)/(R13 − R14)
3.644
2.940
1.906

f1/f
−2.100
−2.987
−1.158

f2/f
1.123
0.962
1.014

f3/f
2.437
2.611
1.849

f4/f
−12.109
−2.236
7.792

f5/f
0.521
0.565
0.777

f6/f
−1.095
−2.515
−8.049

f7/f
−0.995
−0.818
−0.805

d1
0.245
0.210
0.240

d3
0.428
0.615
0.454

d5
0.420
0.372
0.323

d7
0.350
0.685
0.256

d9
0.510
0.552
0.468

d11
0.354
0.332
0.606

d13
0.245
0.260
0.300

Fno
2.150
2.180
2.150

TTL
5.423
5.499
5.681

d7/TTL
0.065
0.125
0.045

n1
1.6509
1.6509
1.6355

n2
1.5352
1.5352
1.5352

n3
1.7130
1.8014
1.8820

n4
1.6509
1.6355
1.6509

n5
1.7130
1.7290
1.8014

n6
1.5346
1.5352
1.5346

n7
1.6509
1.6509
1.6613

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

Number	Date	Country	Kind
2017 1 1038579	Oct 2017	CN	national
2017 1 1052030	Oct 2017	CN	national

Camera optical lens

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

Examiners

Agents

CPC

Field of Search

CPC

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Term Extension

Abstract

Description

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Priority Claims (2)

US Referenced Citations (1)