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

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

FIG. 4 presents 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 six 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 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: −3≤f1/f≤−1. Condition −3≤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 L 1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, −2.749≤f1/f≤−1.261.

The refractive index of the second lens L2 is defined as n2. Here the following condition should be satisfied: 1.7≤n2≤2.2. This condition fixes the refractive index of the second lens L2, and 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, 1.71≤n2≤2.052.

The refractive index of the fifth lens L5 is defined as n5. Here the following condition should be satisfied: 1.7≤n5≤2.2. This condition fixes the refractive index of the fifth lens L5, and 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, 1.709≤n5≤2.062.

The thickness on-axis of the second lens L2 is defined as d3, the total distance from the object side surface of the first lens L1 to the image plane along the optic axis is defined as TTL. Here the following condition should be satisfied: 0.03≤d3/TTL≤0.058. This condition fixes the ratio between the thickness on-axis of the second lens L2 and total optical length TTL of the camera optical lens 10, a ratio within this range can benefits for realization of the ultra-thin lens. Preferably, the condition 0.041≤d3/TTL≤0.058 shall be satisfied.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the first lens L1 has a negative 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: 2.27≤(R1+R2)/(R1−R2)≤8.61, by which, the shape of the first lens L1 can be reasonably controlled and it is effectively for correcting spherical aberration of the camera optical lens. Preferably, the condition 3.63≤(R1+R2)/(R1−R2)≤6.89 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.02≤d1/TTL≤0.07 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.03≤d1/TTL≤0.05 shall be satisfied.

In this embodiment, the second lens L2 has a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: 0.58≤f2/f≤2.31. The positive refractive power of the second lens L2 within this range can be reasonably controlled, which can properly and effectively balance the field curvature of the system and the spherical aberration caused by the negative refractive power of the first lens L1.

Preferably, the condition 0.93≤f2/f≤1.85 should be satisfied.

The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: −6.67≤(R3+R4)/(R3−R4)≤−1.68, which fixes the shape of the second lens L2 and when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like chromatic aberration of the on-axis is difficult to be corrected. Preferably, the following condition shall be satisfied, −4.17≤(R3+R4)/(R3−R4)≤−2.10.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.03≤d3/TTL≤0.09 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04≤d3/TTL≤0.07 shall be satisfied.

In this embodiment, the third lens L3 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 third lens L3 is f3. The following condition should be satisfied: 0.62≤f3/f≤2.07. When the condition is satisfied, it is beneficial for the system to balance field curvature and further enhance the imaging quality. Preferably, the condition 0.99≤f3/f≤1.66 should be satisfied.

The curvature radius of the object side surface of the third lens L3 is defined as R5, the curvature radius of the image side surface of the third lens L3 is defined as R6. The following condition should be satisfied: −2.19≤(R5+R6)/(R5−R6)≤−0.51, by which, the shape of the third lens L3 can be effectively controlled and it is beneficial for shaping of the third lens L3, further, it also can avoid bad molding and stress caused by the excessive curvature of the third lens L3. Preferably, the following condition shall be satisfied, −1.37≤(R5+R5)/(R5−R6)≤−0.64.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.05≤d5/TTL≤0.16 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.08≤d5/TTL≤0.12 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with 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 fourth lens L4 is f4. The following condition should be satisfied: 0.79≤f4/f≤2.60, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. Preferably, the condition 1.26≤f4/f≤2.08 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: 0.87≤(R7+R8)/(R7−R8)≤2.95, by which, the shape of the fourth lens L4 is fixed, further, when 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 following condition shall be satisfied, 1.39≤(R7+R8)/(R7−R8)≤2.36.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.04≤d7/TTL≤0.14 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.06≤d7/TTL≤0.11 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with 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 fifth lens L5 is f5. The following condition should be satisfied: −2.65≤f5/f≤−0.75, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.66≤f5/f≤−0.94 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: −11.94≤(R9+R10)/(R9−R10)≤−3.37, by which, the shape of the fifth lens L5 is fixed, further, when 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 following condition shall be satisfied, −7.46≤(R9+R10)/(R9−R10)≤−4.22.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.02≤d9/TTL≤0.09 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.04≤d9/TTL≤0.08 shall be satisfied.

In this embodiment, the sixth lens L6 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 focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied:1.49≤f6/f≤5.79, the appropriate distribution of refractive power makes it possible that the system has better imaging quality and lower sensitivity. Preferably, the condition 2.39≤f6/f≤4.63 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: −75.69≤(R11+R12)/(R11−R12)≤1439.02, by which, the shape of the sixth lens L6 is fixed, further, when 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 following condition shall be satisfied, −47.48≤(R11+R12)/(R11−R12)≤1151.22.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition:0.10≤d11/TTL≤0.32 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens.

Preferably, the condition 0.16≤d11/TTL≤0.26 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:2.30≤f12/f≤9.90, which can effectively avoid the aberration and field curvature of the camera optical lens, suppress the rear focal length for realizing the ultra-thin lens, and maintain the miniaturization of lens system. Preferably, the condition 3.69≤f12/f≤7.92 should be satisfied.

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 camera optical lens 10 is large aperture and 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 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=
−0.100

R1
1.798
d1=
0.205
nd1
1.671
ν1
19.24

R2
1.148
d2=
0.059

R3
1.777
d3=
0.272
nd2
1.721
ν2
34.71

R4
4.112
d4=
0.030

R5
2.282
d5=
0.456
nd3
1.545
ν3
55.99

R6
51.438
d6=
0.564

R7
−7.482
d7=
0.442
nd4
1.535
ν4
56.09

R8
−2.255
d8=
0.365

R9
−0.649
d9=
0.213
nd5
1.717
ν5
29.52

R10
−0.954
d10=
0.030

R11
1.472
d11=
0.932
nd6
1.535
ν6
56.09

R12
1.469
d12=
0.821

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

R14
∞
d14=
0.100

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

R1: The curvature radius of the object side surface of the first lens L1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lens L2;

R4: The curvature radius of the image side surface of the second lens L2;

R5: The curvature radius of the object side surface of the third lens L3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lens L4;

R8: The curvature radius of the image side surface of the fourth lens L4;

R9: The curvature radius of the object side surface of the fifth lens L5;

R10: The curvature radius of the image side surface of the fifth lens L5;

R11: The curvature radius of the object side surface of the sixth lens L6;

R12: The curvature radius of the image side surface of the sixth lens L6;

R13: The curvature radius of the object side surface of the optical filter GF;

R14: The curvature radius of the image side surface of the optical filter GF;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

d13: The thickness on-axis of the optical filter GF;

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

nd: The refractive 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
−4.7173E+00
−1.7645E−01
2.2119E−01
−1.5105E−01
−2.1451E−02
1.1127E−01
1.3762E−01
−1.9456E−01

R2
−3.1660E+00
−1.8717E−01
2.1969E−01
−5.2952E−02
−3.1274E−01
1.7289E−01
6.6484E−01
−6.0512E−01

R3
2.4032E+00
−1.1914E−01
1.1825E−01
−1.7649E−01
−8.4796E−02
−8.7722E−03
−6.5060E−02
2.3159E−02

R4
−1.1106E+02
1.7117E−01
3.0121E−02
4.5702E−02
−6.9650E−03
−3.2272E−01
−3.1706E−01
5.5084E−01

R5
1.7308E+00
−1.0127E−01
2.5775E−01
−2.7360E−01
−5.7635E−02
1.0594E−01
2.0620E−01
−3.1589E−01

R6
1.2000E+02
−9.3839E−02
−1.9933E−02
−5.9439E−02
−4.9561E−02
1.0058E−01
7.4811E−02
−1.7321E−01

R7
−9.9042E+01
−1.2218E−01
−1.5502E−02
−1.1672E−02
−6.0766E−02
3.2468E−02
6.8803E−02
−4.7338E−02

R8
2.8729E+00
−6.8843E−02
1.6015E−02
−4.0383E−03
−1.4223E−02
1.6505E−02
1.8757E−02
−2.7364E−03

R9
−3.1929E+00
−1.1430E−01
−2.1045E−02
−1.8405E−02
1.1570E−02
1.0048E−02
−1.7486E−03
−2.9274E−03

R10
−3.5118E+00
−2.2103E−02
−1.7041E−02
6.9400E−03
3.2361E−03
1.3588E−03
6.3065E−04
−3.1203E−04

R11
−1.1941E+01
−1.0459E−01
1.6576E−02
6.3614E−04
1.6243E−05
−2.4800E−05
−1.6377E−05
2.7928E−06

R12
−4.8043E+00
−5.2820E−02
1.1792E−02
−1.8918E−03
1.2548E−04
4.8514E−07
−6.2244E−07
2.0243E−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+A10x¹⁰A12x¹²+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

number
position 1
position 2

P1R1
0

P1R2
0

P2R1
1
0.725

P2R2
1
0.755

P3R1
1
0.745

P3R2
1
0.135

P4R1
0

P4R2
0

P5R1
0

P5R2
1
1.005

P6R1
2
0.455
1.605

P6R2
1
0.735

TABLE 4

Arrest point number
Arrest point position 1

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
1
0.225

P4R1
0

P4R2
0

P5R1
0

P5R2
0

P6R1
1
0.945

P6R2
1
1.635

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 embodiments 1, 2,3,and the values corresponding with the parameters which are already specified in the conditions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.606 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 78.42°, 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=
−0.110

R1
1.837
d1=
0.215
nd1
1.671
ν1
19.24

R2
1.256
d2=
0.097

R3
2.099
d3=
0.255
nd2
1.801
ν2
34.97

R4
4.369
d4=
0.045

R5
2.578
d5=
0.462
nd3
1.545
ν3
55.99

R6
−138.670
d6=
0.505

R7
−6.738
d7=
0.397
nd4
1.535
ν4
56.09

R8
−2.196
d8=
0.401

R9
−0.668
d9=
0.219
nd5
1.808
ν5
22.76

R10
−0.936
d10=
0.030

R11
1.504
d11=
0.949
nd6
1.535
ν6
56.09

R12
1.492
d12=
0.817

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

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
−2.4954E+00
−1.5332E−01
1.8060E−01
−2.1000E−01
1.4204E−01
8.0637E−02
−1.1606E−01
1.8266E−02

R2
−2.6263E+00
−1.6135E−01
2.0331E−01
−3.6327E−02
−3.2664E−01
1.1556E−01
6.2924E−01
−4.6286E−01

R3
3.3031E+00
−1.3255E−01
1.8785E−01
−2.2341E−01
−7.4502E−02
−1.1134E−02
−1.2555E−01
2.4129E−01

R4
−1.2028E+02
1.3283E−01
4.0999E−02
9.5824E−02
−2.7686E−01
−2.7193E−01
3.1437E−01
1.2070E−01

R5
5.5826E+00
−8.3282E−02
2.4249E−01
−3.2756E−01
−5.5633E−02
1.1223E−01
1.0231E−01
−1.9937E−01

R6
0.0000E+00
−9.2920E−02
−2.6047E−02
−4.5329E−02
−1.0538E−02
3.7380E−03
8.4016E−02
−1.2095E−01

R7
−3.0750E+01
−1.2682E−01
−5.0458E−02
−3.3313E−02
−2.2690E−02
4.9192E−02
5.0959E−02
−2.2659E−02

R8
2.4506E+00
−6.7038E−02
1.0273E−02
−1.9604E−02
−1.6683E−02
2.9501E−02
3.0965E−02
−1.1991E−02

R9
−3.1064E+00
−8.4112E−02
−9.5331E−03
−2.0915E−02
1.0548E−02
1.2964E−02
−2.6810E−04
−7.1602E−03

R10
−2.9825E+00
−2.1614E−02
−1.2648E−02
7.4155E−03
2.4645E−03
1.1107E−03
8.4395E−04
−7.0657E−05

R11
−1.1750E+01
−1.1638E−01
1.8144E−02
9.6839E−04
1.1979E−04
−2.2866E−05
−2.6954E−05
3.3690E−06

R12
−4.5808E+00
−5.5850E−02
1.2784E−02
−2.1394E−03
1.5060E−04
1.3043E−06
−9.1766E−07
2.0690E−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 number
Inflexion point position 1
Inflexion point position 2

P1R1
0

P1R2
0

P2R1
2
0.705
0.825

P2R2
0

P3R1
1
0.735

P3R2
0

P4R1
1
0.925

P4R2
1
0.985

P5R1
0

P5R2
1
0.985

P6R1
2
0.445
1.525

P6R2
1
0.735

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
0.905

P6R2
1
1.605

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 s 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 1.698 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 81.46°, 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=
−0.100

R1
2.023
d1=
0.215
nd1
1.671
ν1
19.24

R2
1.423
d2=
0.101

R3
2.266
d3=
0.240
nd2
1.903
ν2
31.01

R4
4.206
d4=
0.033

R5
2.816
d5=
0.487
nd3
1.545
ν3
55.99

R6
−20.938
d6=
0.465

R7
−7.824
d7=
0.347
nd4
1.535
ν4
56.09

R8
−2.096
d8=
0.351

R9
−0.686
d9=
0.295
nd5
1.923
ν5
18.90

R10
−1.025
d10=
0.030

R11
1.474
d11=
1.006
nd6
1.535
ν6
56.09

R12
1.553
d12=
0.822

R13
∞
d13=
0.210
ndg
1.517
νg
64.17

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
−1.1966E+00
−1.4228E−01
1.2867E−01
−2.1112E−01
2.1982E−01
5.9718E−02
−2.0014E−01
3.9414E−02

R2
−1.7821E+00
−1.4911E−01
1.3141E−01
−5.2365E−02
−2.8772E−01
1.8598E−01
3.7300E−01
−6.6595E−01

R3
4.3417E+00
−8.7969E−02
8.3778E−02
−1.7886E−01
−7.7747E−02
−1.2165E−01
−2.4391E−01
1.6130E−01

R4
−7.5968E+01
1.3878E−01
5.5413E−02
−2.6625E−02
−3.2453E−01
−2.3781E−01
4.9210E−01
5.4100E−02

R5
7.0634E+00
−1.3818E−02
2.2020E−01
−4.1546E−01
−3.4964E−02
2.2054E−01
1.1215E−01
−2.4347E−01

R6
0.0000E+00
−8.0097E−02
−4.2115E−02
−4.4224E−02
1.0823E−02
−1.1110E−02
2.5705E−02
−6.3914E−02

R7
2.5639E+00
−1.3053E−01
−4.2653E−02
−3.9598E−02
−2.7959E−02
3.9075E−02
2.4321E−02
4.9439E−03

R8
2.3229E+00
−4.8227E−02
2.0414E−02
−2.1248E−02
−1.4413E−02
3.5179E−02
3.9298E−02
−1.6195E−02

R9
−3.1114E+00
−9.2033E−02
−4.2227E−03
−2.1585E−02
1.0687E−02
1.6789E−02
2.7324E−04
−7.8764E−03

R10
−3.0347E+00
−3.1786E−02
−1.5771E−02
7.3989E−03
2.5410E−03
9.7056E−04
8.8625E−04
3.8161E−05

R11
−9.2810E+00
−1.1522E−01
1.7309E−02
8.4515E−04
1.1419E−04
−1.8072E−05
−2.5452E−05
3.2960E−06

R12
−4.1790E+00
−5.7827E−02
1.3844E−02
−2.3312E−03
1.7349E−04
1.1926E−07
−9.6543E−07
3.3004E−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
Inflexion

number
point position 1
Inflexion point position 2

P1R1
0

P1R2
1
0.615

P2R1
1
0.615

P2R2
1
0.675

P3R1
1
0.765

P3R2
0

P4R1
1
0.955

P4R2
1
0.935

P5R1
0

P5R2
1
1.025

P6R1
2
0.475
1.565

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
0

P5R1
0

P5R2
0

P6R1
1
0.945

P6R2
1
1.655

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 s of 555 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 1.505 mm, the full vision field image height is 2.933 mm, the vision field angle in the diagonal direction is 83.02°, 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
Embodiment2
Embodiment 3

f
3.534
3.396
3.312

f1
−5.373
−6.897
−8.273

f2
4.120
4.780
5.110

f3
4.358
4.638
4.576

f4
5.839
5.886
5.220

f5
−3.975
−4.504
−3.848

f6
12.487
13.099
9.888

f12
23.322
18.706
15.262

(R1 + R2)/(R1 − R2)
4.533
5.327
5.741

(R3 + R4)/(R3 − R4)
−2.523
−2.850
−3.336

(R5 + R6)/(R5 − R6)
−1.093
−0.964
−0.763

(R7 + R8)/(R7 − R8)
1.863
1.967
1.732

(R9 + R10)/
−5.251
−5.970
−5.058

(R9 − R10)

(R11 + R12)/
959.348
241.875
−37.982

(R11 − R12)

f1/f
−1.521
−2.031
−2.498

f2/f
1.166
1.408
1.543

f3/f
1.233
1.366
1.382

f4/f
1.653
1.733
1.576

f5/f
−1.125
−1.326
−1.162

f6/f
3.534
3.857
2.986

f12/f
6.600
5.509
4.609

d1
0.205
0.215
0.215

d3
0.272
0.255
0.240

d5
0.456
0.462
0.487

d7
0.442
0.397
0.347

d9
0.213
0.219
0.295

d11
0.932
0.949
1.006

Fno
2.200
2.000
2.200

TTL
4.700
4.701
4.700

d1/TTL
0.044
0.046
0.046

d3/TTL
0.058
0.054
0.051

d5/TTL
0.097
0.098
0.104

d7/TTL
0.094
0.084
0.074

d9/TTL
0.045
0.047
0.063

d11/TTL
0.198
0.202
0.214

n1
1.671
1.671
1.671

n2
1.721
1.8010
1.903

n3
1.545
1.545
1.545

n4
1.535
1.535
1.535

n5
1.717
1.808
1.923

n6
1.535
1.535
1.535

v1
19.243
19.243
19.243

v2
34.708
34.967
31.005

v3
55.987
55.987
55.987

v4
56.093
56.093
56.093

v5
29.518
22.761
18.897

v6
56.093
56.093
56.093

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;1.7n22.2;1.7n52.2;0.03≤d3/TTL≤0.058; 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;n5: the refractive index of the fifth 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 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: −2.749f1/f−1.261;1.71n22.052;1.709n52.062;0.041≤d3/TTL≤0.058.
4. The camera optical lens as described in claim 1, wherein first lens has a negative 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 camera optical lens further satisfies the following conditions: 2.27≤(R1+R2)/(R1−R2)≤8.61;0.02≤d1/TTL≤0.07; 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 distance from the object side surface of the first lens to the image plane along the optic axis.
5. The camera optical lens as described in claim 4 further satisfying the following conditions: 3.63≤(R1+R2)/(R1−R2)≤6.89;0.03≤d1/TTL≤0.05.
6. The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions: 0.58≤f2/f≤2.31;−6.67≤(R3+R4)/(R3−R4)≤−1.68; 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 6 further satisfying the following conditions: 0.93≤f2/f≤1.85;−4.17≤(R3+R4)/(R3−R4)≤−2.10.
8. The camera optical lens as described in claim 1, wherein the third lens has a convex object side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions: 0.62≤f3/f≤2.07;−2.19≤(R5+R6)/(R5−R6)≤−0.51;0.05≤d5/TTL≤0.16; 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 to the image plane along the optic axis.
9. The camera optical lens as described in claim 8 further satisfying the following conditions: 0.99≤f3/f≤1.66;−1.37≤(R5+R6)/(R5−R6)≤−0.64;0.08≤d5/TTL≤0.12.
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 relative to the proximal axis and a convex image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions: 0.79≤f4/f≤2.60;0.87≤(R7+R8)/(R7−R8)≤2.95;0.04≤d7/TTL≤0.14; 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 distance from the object side surface of the first lens to the image plane along the optic axis.
11. The camera optical lens as described in claim 10 further satisfying the following conditions: 1.26≤f4/f≤2.08;1.39≤(R7+R8)/(R7−R8)≤2.36;0.06≤d7/TTL≤0.11.
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 relative to the proximal axis and a convex image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions: −2.65≤f5/f≤−0.75;−11.94≤(R9+R10)/(R9−R10)≤−3.37;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 distance from the object side surface of the first lens to the image plane along the optic axis.
13. The camera optical lens as described in claim 12 further satisfying the following conditions: −1.66≤f5/f≤−0.94;−7.46≤(R9+R10)/(R9−R10)≤−4.22;0.04≤d9/TTL≤0.08.
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 relative to the proximal axis and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions: 1.49≤f6/f≤5.79;−75.96≤(R11+R12)/(R11−R12)≤1439.02;0.10≤d11/TTL≤0.32; 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 to the image plane along the optic axis.
15. The camera optical lens as described in claim 14 further satisfying the following conditions: 2.39≤f6/f≤4.63;−47.78≤(R11+R12)/(R11−R12)≤1151.22; 0.16≤d11/TTL≤0.26.
16. The camera optical lens as described in claim 1 further satisfying the following condition: 2.30≤f12/f≤9.90; 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: 3.69≤f12/f≤7.92.
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 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
201810925245.3	Aug 2018	CN	national
201810925257.6	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)