Camera optical lens

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices, such as smart phones or digital cameras, and camera devices, such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera optical lens is increasingly higher, but in general the photosensitive devices of camera optical lens are nothing more than Charge Coupled Devices (CCDs) or Complementary Metal-Oxide Semiconductor Sensors (CMOS sensors). As the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera optical lenses with good imaging quality have become a mainstream in the market.

In order to obtain better imaging quality, the lens conventionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. Also, with the development of technology and the increasingly diverse demands of users, the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is increasingly higher, five-piece and six-piece lens structures gradually emerge in lens designs. Although the common six-piece lens has good optical performance, its settings on refractive power, lens spacing and lens shape still have some irrationality, such that the lens structure cannot achieve good optical performance while satisfying design requirements for ultra-thin, large aperture design.

SUMMARY

In view of the above problems, the present disclosure provides a camera optical lens, which can achieve good optical performance while satisfying design requirements for ultra-thin lenses having large apertures.

In an embodiment, the present disclosure provides a camera optical lens. The camera optical lens includes, from an object side to an image side, a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: −3.00≤f1/f≤−1.50; 0.10≤(R5+R6)/(R5−R6)≤1.00; and 1.00≤d8/d10≤2.50, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R5 denotes a curvature radius of an object side surface of the third lens; R6 denotes a curvature radius of an image side surface of the third lens; d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens; and d10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens.

As an improvement, the camera optical lens further satisfies a following condition of 0.70≤f2/f≤1.50, where f2 denotes a focal length of the second lens.

As an improvement, the camera optical lens further satisfies following conditions: 0.52≤(R1+R2)/(R1−R2)≤2.00; and 0.02≤d1/TTL≤0.08, where R1 denotes a curvature radius of an object side surface of the first lens; R2 denotes a curvature radius of an image side surface of the first lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: 0.04≤(R3+R4)/(R3−R4)≤0.75; and 0.06≤d3/TTL≤0.27, where R3 denotes a curvature radius of an object side surface of the second lens; R4 denotes a curvature radius of an image side surface of the second lens; d3 denotes an on-axis thickness of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −9.10≤f3/f≤−0.90; and 0.02≤d5/TTL≤0.07, where f3 denotes a focal length of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: 5.17≤f4/f≤12203.56; −19.75≤(R7+R8)/(R7−R8)≤184.95; and 0.04≤d7/TTL≤0.14, where f4 denotes a focal length of the fourth lens; R7 denotes a curvature radius of an object side surface of the fourth lens; R8 denotes a curvature radius of the image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: 0.36≤f5/f≤2.52; 0.06≤(R9+R10)/(R9−R10)≤0.98; and 0.04≤d9/TTL≤0.18, where f5 denotes a focal length of the fifth lens; R9 denotes a curvature radius of the object side surface of the fifth lens; R10 denotes a curvature radius of the image side surface of the fifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies following conditions: −9.39≤f6/f≤−0.60; 1.24≤(R11+R12)/(R11−R12)≤9.26; and 0.03≤d11/TTL≤0.13, where f6 denotes a focal length of the sixth lens; R11 denotes a curvature radius of the object side surface of the sixth lens; R12 denotes a curvature radius of an image side surface of the sixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies a following condition: TTL/IH≤1.85, where IH denotes an image height; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies a following condition of FOV≥116°, where FOV denotes a field of view of the camera optical lens.

The present disclosure has advantageous effects in that the camera optical lens according to the present disclosure has excellent optical characteristics and also has characteristics of ultra-thin, wide-angle and large aperture, making it especially suitable for high-pixel camera optical lens assembly of mobile phones and WEB camera optical lenses formed by camera elements such as CCD and CMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

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

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9.

FIG. 13 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13; and

FIG. 16 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 13.

DESCRIPTION OF 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

Referring to FIG. 1, the present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present disclosure. The camera optical lens 10 includes 6 lenses. For example, the camera optical lens 10 includes, from an object side to an image side, a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. An optical element such as an optical filter (GF) can be arranged between the sixth lens L6 and an image plane Si.

In the present embodiment, the first lens L1 has a negative refractive power, the second lens L2 has a positive refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, the fifth lens L5 has a positive refractive power, and the sixth lens L6 has a negative refractive power.

The first lens L1 is made of a plastic material, the second lens L2 is made of a plastic material, the third lens L3 is made of a plastic material, the fourth lens L4 is made of a plastic material, the fifth lens L5 is made of a plastic material, and the sixth lens L6 is made of a plastic material.

In the present embodiment, a focal length of the camera optical lens 10 is defined as f, and a focal length of the first lens L1 is defined as f1. The camera optical lens 10 should satisfy a condition of −3.00≤f1/f≤−1.50, which specifies a ratio of the focal length f1 of the first lens L1 to the focal length f of the system. This condition facilitates to achieving a wide-angle of the system.

A curvature radius of an object side surface of the third lens L3 is defined as R5, and a curvature radius of an image side surface of the third lens L3 is defined as R6. The camera optical lens 10 should satisfy a condition of 0.10≤(R5+R6)/(R5−R6)≤1.00, which satisfies a shape of the third lens L3. This condition can alleviate deflection of light passing through the lens while effectively reducing aberrations.

An on-axis distance from an image side surface of the fourth lens L4 to an object side surface of the fifth lens L5 is defined as d8, and an on-axis distance from an image side surface of the fifth lens L5 to an object side surface of the sixth lens L6 is defined as d10. The camera optical lens 10 should satisfy a condition of 1.00≤d8/d10≤2.50. When d8/d10 satisfies such a condition, a position of the fifth lens L5 can be effectively distributed, so as to correct the system curvature and improve the imaging quality.

The focal length of the camera optical lens 10 is f, and a focal length of the second lens L2 is f2. The camera optical lens 10 further satisfies a condition of 0.70≤f2/f≤1.50, which specifies a ratio of the focal length f2 of the second lens L2 to the focal length f of the system. This condition facilitates to improving the performance of the optical system.

In the present embodiment, the first lens L1 includes an object side surface being convex in a paraxial region, and an image side surface being concave in the paraxial region.

A curvature radius of the object side surface of the first lens L1 is defined as R1, and a curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 should satisfy a condition of 0.52≤(R1+R2)/(R1−R2)≤2.00, which can appropriately control a shape of the first lens L1, allowing the first lens L1 to effectively correct spherical aberrations of the system. As an example, 0.84≤(R1+R2)/(R1−R2)≤1.60.

An on-axis thickness of the first lens L1 is defined as d1, and a total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.02≤d1/TTL≤0.08, which can achieve the ultra-thin lenses. As an example, 0.03≤d1/TTL≤0.07.

In the present embodiment, the second lens L2 includes an object side surface being convex in a paraxial region, and an image side surface being convex in the paraxial region.

A curvature radius of the object side surface of the second lens L2 is defined as R3, and a curvature radius of the image side surface of the second lens L2 is defined as R4. The camera optical lens 10 should satisfy a condition of 0.04≤(R3+R4)/(R3−R4)≤0.75, which specifies a shape of the second lens L2. This condition can facilitate the correction of an on-axis aberration with development towards ultra-thin lenses. As an example, 0.06≤(R3+R4)/(R3−R4)≤0.60.

An on-axis thickness of the second lens L2 is defined as d3, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.06≤d3/TTL≤0.27, which can achieve the ultra-thin lenses. As an example, 0.10≤d3/TTL≤0.21.

In the present embodiment, the third lens L3 includes an object side surface being concave in a paraxial region, and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the third lens L3 is defined as f3. The camera optical lens 10 further satisfies a condition of −9.10≤f3/f≤−0.90. The appropriate distribution of the refractive power leads to better imaging quality and a lower sensitivity of the system. As an example, −5.69≤f3/f≤−1.13.

An on-axis thickness of the third lens L3 is defined as d5, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.02≤d5/TTL≤0.07, which can achieve the ultra-thin lenses. As an example, 0.03≤d5/TTL≤0.05.

The fourth lens L4 includes an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal length of the fourth lens L4 is f4. The camera optical lens 10 further satisfies a condition of 5.17≤f4/f≤12203.56, which specifies a ratio of the focal length f4 of the fourth lens L4 and the focal length of the system. This condition can facilitate improving an optical performance of the system. As an example, 8.27≤f4/f≤9762.84.

A curvature radius of the object side surface of the fourth lens L4 is defined as R7, and a curvature radius of the image side surface of the fourth lens L4 is defined as R8. The camera optical lens 10 should satisfy a condition of −19.75≤(R7+R8)/(R7−R8)≤184.95, which specifies a shape of the fourth lens L4. This can facilitate the correction of an off-axis aberration with development towards ultra-thin, wide-angle lenses. As an example, −12.35≤(R7+R8)/(R7−R8)≤147.96.

An on-axis thickness of the fourth lens L4 is defined as d7, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.04≤d7/TTL≤0.14, which can achieve the ultra-thin lenses. As an example, 0.07≤d7/TTL≤0.12.

The fifth lens L5 includes an object side surface being convex in a paraxial region, and an image side surface being convex in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal length of the fifth lens L5 is f5. The camera optical lens 10 should satisfy a condition of 0.36≤f5/f≤2.52. The limitations on the fifth lens L5 can effectively make a light angle of the camera lens gentle and reduce the tolerance sensitivity. As an example, 0.57≤f5/f≤2.02.

A curvature radius of the object side surface of the fifth lens L5 is defined as R9, and a curvature radius of the image side surface of the fifth lens L5 is defined as R10. The camera optical lens 10 should satisfy a condition of 0.06≤(R9+R10)/(R9−R10)≤0.98, which specifies a shape of the fifth lens L5. This condition can facilitate the correction of an off-axis aberration with the development towards ultra-thin lenses. As an example, 0.09≤(R9+R10)/(R9−R10)≤0.78.

An on-axis thickness of the fifth lens L5 is defined as d9, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.04≤d9/TTL≤0.18, which can achieve the ultra-thin lenses. As an example, 0.06≤d9/TTL≤0.15.

In the present embodiment, the sixth lens L6 includes an object side surface being convex in a paraxial region, and an image side surface being concave in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, and a focal length of the sixth lens L6 is defined as f6. The camera optical lens 10 further satisfies a condition of −9.39≤f6/f≤−0.60. The appropriate distribution of the refractive power leads to better imaging quality and a lower sensitivity of the system. As an example, −5.87≤f6/f≤−0.75.

A curvature radius of the object side surface of the sixth lens L6 is defined as R11, and a curvature radius of the image side surface of the sixth lens L6 is defined as R12. The camera optical lens 10 should satisfy a condition of 1.24≤(R11+R12)/(R11−R12)≤9.26, which specifies a shape of the sixth lens L6. This condition can facilitate the correction of an off-axis aberration with development towards ultra-thin lenses. As an example, 1.99≤(R11+R12)/(R11−R12)≤7.41.

An on-axis thickness of the sixth lens L6 is defined as d11, and the total optical length from the object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. The camera optical lens 10 should satisfy a condition of 0.03≤d11/TTL≤0.13, which can achieve the ultra-thin lenses. As an example, 0.05≤d11/TTL≤0.10.

In the present embodiment, an image height of the camera optical lens 10 is defined as IH, and the total optical length of the camera optical lens 10 is defined as TTL. The camera optical lens 10 should satisfy a condition of TTL/IH≤1.85, which can achieves the ultra-thin lenses.

In the present embodiment, a field of view (FOV) of the camera optical lens 10 is greater than or equal to 116°, thereby achieving the wide-angle.

In the present embodiment, an F number (FNO) of the camera optical lens 10 is smaller than or equal to 2.20, thereby leading to a large aperture and high imaging performance.

In the present embodiment, the focal length of the camera optical lens 10 is defined as f, and a combined focal length of the first lens L1 and the second lens L2 is defined as f12. The camera optical lens 10 should satisfy a condition of 0.41≤f12/f≤3.49, which can eliminate the aberration and distortion of the camera optical lens 10, suppress the back focal length of the camera optical lens 10, and maintain miniaturization of the camera lens system group. As an example, 0.66≤f12/f≤2.79.

When the above conditions are satisfied, the camera optical lens 10 will have good optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures. With these characteristics, the camera optical lens 10 is especially suitable for high-pixel camera optical lens assembly of mobile phones and WEB camera optical lenses formed by imaging elements such as CCD and CMOS.

The following examples will be used to describe the camera optical lens 10 of the present disclosure. The symbols recorded in each example will be described as follows. The focal length, on-axis distance, curvature radius, on-axis thickness, inflexion point position, and arrest point position are all in units of mm.

TTL: total optical length (total optical length from the object side surface of the first lens L1 to the image plane of the camera optical lens along the optic axis) in mm.

In an example, inflexion points and/or arrest points can be arranged on the object side surface and/or image side surface of the lens, so as to satisfy the demand for the high quality imaging. The description below can be referred to for specific implementations.

Table 1 and Table 2 shows design data of the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 1

R
d
nd
vd

S1
∞
d0 =
−0.814

R1
22.236
d1 =
0.224
nd1
1.5444
v1
55.82

R2
3.153
d2 =
0.678

R3
4.940
d3 =
0.670
nd2
1.5444
v2
55.82

R4
−2.788
d4 =
0.145

R5
−30.524
d5 =
0.230
nd3
1.6610
v3
20.53

R6
8.861
d6 =
0.149

R7
2.965
d7 =
0.501
nd4
1.5444
v4
55.82

R8
3.633
d8 =
0.254

R9
4.116
d9 =
0.632
nd5
1.5444
v5
55.82

R10
−1.155
d10 =
0.140

R11
1.283
d11 =
0.349
nd6
1.6610
v6
20.53

R12
0.591
d12 =
0.596

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.422

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

d: on-axis thickness of a lens and an on-axis distance between lenses;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

nd: refractive index of d line;

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

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

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

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

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

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

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2

Conic

coefficient
Aspherical surface coefficients

k
A4
A6
A8
A10
A12
A14
A16

R1
2.0000E+02
3.7680E−01
−3.0039E−01
2.2241E−01
−6.0946E−02
−5.2710E−03
−3.9727E−02
2.2156E−02

R2
−1.3421E+01
5.7786E−01
−3.9265E−01
1.0391E+00
−3.3352E+00
8.3763E+00
−1.0735E+01
4.8368E+00

R3
−1.5775E+02
1.3386E−01
−7.0366E−01
2.1227E+00
−6.9864E+00
1.1628E+01
−9.4842E+00
−9.6038E−01

R4
−1.3450E+00
−1.3026E−01
−4.6383E−01
7.1423E−01
−1.1775E+00
3.2394E−01
1.2782E+00
−1.2069E+00

R5
2.0000E+02
2.3187E−02
−7.0043E−01
4.1054E−01
1.9266E+00
−6.6262E+00
8.4140E+00
−3.6183E+00

R6
−1.6899E+02
8.8004E−02
−5.0189E−01
7.2947E−01
−6.6196E−01
2.9294E−01
8.4910E−03
−1.7742E−02

R7
−5.3109E+00
−1.1226E−01
5.5526E−02
1.3367E−01
−2.5565E−01
2.0020E−01
−7.7556E−02
1.1897E−02

R8
−5.8658E+01
−1.1196E−02
−4.6723E−01
7.2560E−01
−6.2111E−01
3.5023E−01
−1.1370E−01
1.5338E−02

R9
1.6535E+00
2.7152E−01
−4.0767E−01
3.4509E−01
−2.2986E−01
8.3969E−02
−1.3628E−02
6.9464E−04

R10
−7.7581E+00
1.8397E−01
1.9765E−01
−4.2073E−01
2.8023E−01
−9.7478E−02
1.7612E−02
−1.2819E−03

R11
−5.3515E+00
−1.8009E−01
2.8841E−02
−6.4833E−02
7.9604E−02
−4.2788E−02
1.0878E−02
−1.0564E−03

R12
−3.3491E+00
−1.6907E−01
7.7868E−02
−2.5766E−02
5.4543E−03
−6.6950E−04
3.5496E−05
1.3637E−07

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16 are aspheric surface coefficients.

IH: image height

y=(x²/R)/[1+{1−(k+1)(x²/R²)}^1/2]+A4x⁴+A6x⁶+A8x⁸+A10x¹¹+A12x¹²+A14x¹⁴+A16x¹⁶ (1)

In the present embodiment, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present disclosure is not limited to the aspherical polynomial form shown in the condition (1).

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

TABLE 3

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
1.005

P1R2
1
0.805

P2R1
1
0.405

P2R2
0

P3R1
1
0.815

P3R2
2
0.395
0.905

P4R1
1
1.105

P4R2
4
0.345
1.035
1.305
1.405

P5R1
2
0.805
1.455

P5R2
3
0.385
0.965
1.665

P6R1
3
0.455
1.575
1.735

P6R2
2
0.505
2.145

TABLE 4

Number of
Arrest point
Arrest point

arrest points
position 1
position 2

P1R1
0

P1R2
0

P2R1
1
0.565

P2R2
0

P3R1
0

P3R2
1
0.605

P4R1
0

P4R2
1
0.585

P5R1
1
1.115

P5R2
2
0.785
1.115

P6R1
1
0.825

P6R2
1
1.345

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a tangential direction.

Table 17 below further lists various values of Embodiments 1, 2, 3, and 4 and parameters which are specified in the above conditions.

As shown in Table 17, Embodiment 1 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 1.027 mm. The image height is 2.88 mm. The field of view (FOV) along a diagonal direction is 116.91°. Thus, the camera optical lens 10 is an ultra-thin, wide-angle lens in which the on-axis and off-axis aberrations are sufficiently corrected, thereby leading to better optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 5

R
d
nd
vd

S1
∞
d0 =
−0.852

R1
21.054
d1 =
0.292
nd1
1.5444
v1
55.82

R2
1.989
d2 =
0.514

R3
3.201
d3 =
0.938
nd2
1.5444
v2
55.82

R4
−1.067
d4 =
0.031

R5
−4.585
d5 =
0.210
nd3
1.6610
v3
20.53

R6
3.743
d6 =
0.391

R7
2.477
d7 =
0.454
nd4
1.5444
v4
55.82

R8
2.317
d8 =
0.209

R9
4.627
d9 =
0.421
nd5
1.5444
v5
55.82

R10
−3.645
d10 =
0.209

R11
0.990
d11 =
0.439
nd6
1.6610
v6
20.53

R12
0.714
d12 =
0.547

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.375

Table 6 shows aspheric surface data of respective lenses in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6

Conic

coefficient
Aspherical surface coefficients

k
A4
A6
A8
A10
A12
A14
A16

R1
1.9295E+02
3.3932E−01
−3.6810E−01
3.8565E−01
−2.9860E−01
1.2239E−01
−2.0529E−02
4.5618E−04

R2
−1.6382E+00
5.8504E−01
−1.9857E−01
−4.0011E−01
4.3226E+00
−1.0665E+01
1.2699E+01
−6.2580E+00

R3
−2.6827E+01
1.1602E−01
4.8175E−02
−2.1542E+00
1.1879E+01
−3.7608E+01
6.0592E+01
−4.1289E+01

R4
−5.5896E+00
4.2945E−01
−5.2371E+00
2.0480E+01
−4.8544E+01
6.8540E+01
−5.3101E+01
1.7210E+01

R5
−2.0000E+02
3.8297E−01
−3.7342E+00
1.2389E+01
−2.5661E+01
3.2163E+01
−2.2434E+01
6.7965E+00

R6
−1.8542E+02
1.5189E−01
−9.8794E−01
2.1734E+00
−3.0970E+00
2.7776E+00
−1.4142E+00
3.2864E−01

R7
−9.2218E+00
−2.0932E−01
4.3250E−01
−5.2865E−01
4.3156E−01
−2.2494E−01
6.8569E−02
−9.6308E−03

R8
−2.4092E+01
−4.9673E−02
−4.0770E−01
7.3018E−01
−6.6680E−01
3.7169E−01
−1.1336E−01
1.4000E−02

R9
2.2728E+00
4.1614E−01
−6.7968E−01
7.3832E−01
−6.5070E−01
3.3065E−01
−8.5357E−02
8.9298E−03

R10
−2.6322E+00
1.8378E−01
5.5074E−01
−1.0881E+00
8.2438E−01
−3.2982E−01
6.8301E−02
−5.7294E−03

R11
−3.7486E+00
−2.7973E−01
1.8493E−01
−2.8172E−01
2.7930E−01
−1.4390E−01
3.6284E−02
−3.5364E−03

R12
−3.0330E+00
−1.9358E−01
7.9758E−02
−1.4727E−02
−2.8847E−03
1.9890E−03
−3.6453E−04
2.3402E−05

Table 7 and Table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
0

P1R2
0

P2R1
1
0.535

P2R2
0

P3R1
0

P3R2
2
0.365
0.905

P4R1
1
1.175

P4R2
3
0.375
1.025
1.305

P5R1
2
0.775
1.435

P5R2
4
0.295
0.895
1.625
1.695

P6R1
3
0.445
1.555
1.695

P6R2
2
0.525
2.135

TABLE 8

Number of
Arrest point
Arrest point

arrest points
position 1
position 2

P1R1

P1R2

P2R1

P2R2

P3R1

P3R2
1
0.615

P4R1
1
1.335

P4R2
1
0.665

P5R1
1
1.055

P5R2
2
0.485
1.175

P6R1
1
0.845

P6R2
1
1.275

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 20 according to Embodiment 2.

As shown in Table 17, Embodiment 2 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 1.027 mm. The image height is 2.88 mm. The FOV along a diagonal direction is 116.90°. Thus, the camera optical lens 10 is an ultra-thin, wide-angle lens in which the on-axis and off-axis aberrations are sufficiently corrected, thereby leading to better optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 9

R
d
nd
vd

S1
∞
d0 =
−0.836

R1
78.432
d1 =
0.279
nd1
1.5444
v1
55.82

R2
1.808
d2 =
0.480

R3
2.505
d3 =
0.868
nd2
1.5444
v2
55.82

R4
−2.139
d4 =
0.171

R5
−10471.576
d5 =
0.210
nd3
1.6610
v3
20.53

R6
5.239
d6 =
0.104

R7
2.921
d7 =
0.477
nd4
1.5444
v4
55.82

R8
2.874
d8 =
0.280

R9
4.594
d9 =
0.615
nd5
1.5444
v5
55.82

R10
−1.183
d10 =
0.112

R11
1.538
d11 =
0.402
nd6
1.6610
v6
20.53

R12
0.689
d12 =
0.636

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.456

Table 10 shows aspheric surface data of respective lenses in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10

Conic

coefficient
Aspherical surface coefficients

k
A4
A6
A8
A10
A12
A14
A16

R1
1.8198E+02
4.0719E−01
−5.1865E−01
6.0181E−01
−5.2709E−01
2.7175E−01
−7.4236E−02
8.7993E−03

R2
−4.2936E−01
6.5614E−01
−3.0491E−01
−7.0741E−02
2.3917E+00
−3.7155E+00
6.6838E−01
1.1076E+00

R3
−1.6303E+01
1.5329E−01
−7.6720E−02
−9.8661E−01
5.3932E+00
−1.8411E+01
3.2530E+01
−2.5225E+01

R4
−2.0692E+00
−1.8104E−01
−5.9907E−01
2.2132E+00
−4.9900E+00
6.0944E+00
−3.6849E+00
5.8984E−01

R5
−2.0000E+02
1.0140E−02
−1.1479E+00
1.9142E+00
−1.2147E+00
−1.0447E+00
1.8431E+00
−6.2761E−01

R6
−2.0000E+02
1.8223E−01
−6.9481E−01
7.8370E−01
−6.7007E−02
−7.2315E−01
6.4939E−01
−1.6504E−01

R7
−1.5454E+01
−3.3288E−01
9.0483E−01
−1.5398E+00
1.7332E+00
−1.2137E+00
4.7893E−01
−8.2451E−02

R8
−5.8620E+01
−1.4117E−01
−3.9880E−01
1.0185E+00
−1.2655E+00
9.2594E−01
−3.5191E−01
5.2404E−02

R9
3.2032E+00
2.5018E−01
−4.2154E−01
4.0239E−01
−2.8572E−01
1.1680E−01
−2.3850E−02
1.9053E−03

R10
−7.3428E+00
2.7669E−01
1.1845E−02
−2.2346E−01
1.6585E−01
−5.8907E−02
1.0548E−02
−7.5380E−04

R11
−4.5730E+00
−1.4157E−01
1.7768E−02
−4.5427E−02
5.6833E−02
−3.0897E−02
7.8086E−03
−7.4372E−04

R12
−4.1269E+00
−9.7153E−02
1.5073E−02
6.9643E−03
−5.2965E−03
1.4057E−03
−1.7457E−04
8.5305E−06

Table 11 and Table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11

Number of
Inflexion
Inflexion
Inflexion

inflexion
point
point
point

points
position 1
position 2
position 3

P1R1
1
1.025

P1R2
0

P2R1
1
0.555

P2R2
0

P3R1
2
0.035
0.055

P3R2
2
0.435
0.915

P4R1
1
1.055

P4R2
3
0.285
0.975
1.225

P5R1
2
0.795
1.485

P5R2
3
0.365
1.005
1.795

P6R1
3
0.495
1.665
1.735

P6R2
2
0.545
2.265

TABLE 12

Number of
Arrest point
Arrest point

inflexion points
position 1
position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
1
0.715

P4R1
1
1.185

P4R2
1
0.505

P5R1
1
1.125

P5R2
2
0.745
1.215

P6R1
1
0.895

P6R2
1
1.365

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 30 according to Embodiment 3.

Table 17 below further lists various values of the present embodiment and parameters which are specified in the above conditions. Obviously, the camera optical lens according to the present embodiment satisfies the above conditions.

Embodiment 4

Embodiment 4 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1. Only differences therebetween will be described in the following.

Table 13 and Table 14 show design data of a camera optical lens 40 in Embodiment 4 of the present disclosure.

TABLE 13

R
d
nd
vd

S1
∞
d0 =
−0.748

R1
21.054
d1 =
0.222
nd1
1.5444
v1
55.82

R2
2.078
d2 =
0.479

R3
3.020
d3 =
0.773
nd2
1.5444
v2
55.82

R4
−1.996
d4 =
0.129

R5
−225.579
d5 =
0.230
nd3
1.6610
v3
20.53

R6
3.999
d6 =
0.168

R7
2.921
d7 =
0.469
nd4
1.5444
v4
55.82

R8
2.874
d8 =
0.279

R9
4.908
d9 =
0.596
nd5
1.5444
v5
55.82

R10
−1.028
d10 =
0.155

R11
1.507
d11 =
0.369
nd6
1.6610
v6
20.53

R12
0.642
d12 =
0.597

R13
∞
d13 =
0.210
ndg
1.5168
vg
64.17

R14
∞
d14 =
0.424

Table 14 shows aspheric surface data of respective lenses in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 14

Conic

coefficient
Aspherical surface coefficients

k
A4
A6
A8
A10
A12
A14
A16

R1
−2.0000E+02
5.0178E−01
−6.1116E−01
6.1985E−01
−3.3102E−01
−1.6978E−01
2.6011E−01
−7.5780E−02

R2
−1.1395E−01
7.3480E−01
−3.1500E−01
−8.2781E−01
5.8228E+00
−1.0468E+01
4.5229E+00
1.6316E+00

R3
−2.1363E+01
1.2933E−01
1.5782E−02
−1.5205E+00
8.1308E+00
−2.8939E+01
5.4219E+01
−4.3506E+01

R4
−2.6115E+00
−1.5216E−01
−6.6740E−01
2.6089E+00
−6.2788E+00
7.4588E+00
−3.6973E+00
−2.6994E−02

R5
−2.0000E+02
−9.6941E−02
−7.5157E−01
1.3251E+00
−9.2433E−02
−4.0042E+00
5.8617E+00
−2.4445E+00

R6
−2.0000E+02
1.8818E−01
−9.1264E−01
1.8511E+00
−2.4085E+00
1.9624E+00
−9.4432E−01
2.3345E−01

R7
−1.5454E+01
−3.3288E−01
9.0483E−01
−1.5398E+00
1.7332E+00
−1.2137E+00
4.7893E−01
−8.2451E−02

R8
−5.8620E+01
−1.4117E−01
−3.9880E−01
1.0185E+00
−1.2655E+00
9.2594E−01
−3.5191E−01
5.2404E−02

R9
3.4920E+00
2.6515E−01
−3.9602E−01
3.5401E−01
−2.4373E−01
9.3333E−02
−1.6977E−02
1.1434E−03

R10
−5.9283E+00
2.9328E−01
6.8693E−02
−3.1439E−01
2.2293E−01
−7.7206E−02
1.3475E−02
−9.3418E−04

R11
−4.1970E+00
−1.2030E−01
−4.4724E−03
−3.9263E−02
5.5380E−02
−2.8909E−02
6.9560E−03
−6.3491E−04

R12
−3.9391E+00
−8.5903E−02
−2.0386E−03
1.7769E−02
−8.7059E−03
1.9510E−03
−2.1553E−04
9.6461E−06

Table 15 and Table 16 show design data of inflexion points and arrest points of respective lens in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 15

Number of
Inflexion
Inflexion
Inflexion
Inflexion

inflexion
point
point
point
point

points
position 1
position 2
position 3
position 4

P1R1
1
0.895

P1R2
0

P2R1
1
0.535

P2R2
0

P3R1
1
0.845

P3R2
2
0.415
0.885

P4R1
1
1.055

P4R2
4
0.285
0.975
1.225
1.395

P5R1
2
0.825
1.485

P5R2
3
0.375
1.005
1.735

P6R1
3
0.515
1.625
1.795

P6R2
2
0.545
2.185

TABLE 16

Number of
Arrest point
Arrest point

arrest points
position 1
position 2

P1R1
0

P1R2
0

P2R1
0

P2R2
0

P3R1
0

P3R2
2
0.715
0.965

P4R1
1
1.185

P4R2
1
0.505

P5R1
2
1.135
1.705

P5R2
2
0.745
1.225

P6R1
1
0.915

P6R2
1
1.385

FIG. 15 and FIG. 16 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing the camera optical lens 40 according to Embodiment 4. FIG. 16 illustrates a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 40 according to Embodiment 4.

In the present embodiment, the entrance pupil diameter of the camera optical lens is 1.027 mm. The image height is 2.88 mm. The FOV along a diagonal direction is 116.9°. Thus, the camera optical lens 10 can provide an ultra-thin, wide-angle lens while having on-axis and off-axis aberrations sufficiently corrected, thereby leading to better optical characteristics.

TABLE 17

Parameters and
Embodiment
Embodiment
Embodiment
Embodiment

Conditions
1
2
3
4

f1/f
−2.99
−1.79
−1.50
−1.88

(R5 + R6)/
0.55
0.10
1.00
0.97

(R5 − R6)

d8/d10
1.81
1.00
2.50
1.80

f
2.259
2.259
2.259
2.259

f1
−6.754
−4.044
−3.393
−4.239

f2
3.366
1.588
2.262
2.327

f3
−10.276
−3.060
−7.852
−5.890

f4
23.339
18378.555
126.639
129.682

f5
1.725
3.801
1.790
1.613

f6
−2.054
−10.602
−2.306
−2.024

f12
5.252
1.865
3.974
3.661

Fno
2.20
2.20
2.20
2.20

In Table 17, Fno is an F number of the camera optical lens.

It can be understood that the above description is only embodiments of the present disclosure. In practice, those skilled in the art can make various modifications to these embodiments without departing from the spirit and scope of the present disclosure.

Number	Name	Date	Kind
20150177493	Asami	Jun 2015	A1
20170153448	Mori	Jun 2017	A1

Camera optical lens

Information

Patent Number

Date Filed

Date Issued

Inventors

Original Assignees

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