Camera Lens

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Japanese Patent Application Ser. No. 2018-137211 filed on Jul. 20, 2018, the entire content of which is incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of camera lenses, and more particularly, to a camera lens, which is constituted by eight lenses, is applicable to a mobile phone camera assembly, a WEB camera lens or the like using camera elements such as a high-pixel CCD and a CMOS, and meanwhile has an excellent optical characteristic, an ultra-thin appearance with total track length (TTL)/image height (IH)≤1.65, a wide angle with a field of view (hereinafter briefly referred to as 2ω) of 70° or more, and an F-number (hereinafter briefly referred to as Fno) of 1.45 or less.

BACKGROUND

In recent years, various types of camera devices using camera elements such as a CCD and a CMOS have been widely applied. With miniaturization and high performance-oriented development of these camera elements, the society has a stronger demand for a camera lens with excellent optical characteristics, an ultra-thin appearance, a wide-angle and a bright Fno.

A camera lens which is constituted by eight lenses and has a bright Fno is disclosed in the related art. Refractive powers of respective lenses from a 1st lens to an 8th lens are (positive, negative, positive, negative, positive, negative, negative, negative), (positive, negative, positive, negative, positive, positive, negative, negative), (positive, positive, negative, positive, negative, positive, negative, negative), or (positive, positive, negative, positive, positive, positive, negative, negative), so Fno=1.20˜1.60 which is bright, but TTL/IH>1.90 which is not ultra-thin enough.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing a configuration of a camera lens LA according to an embodiment of the present disclosure.

FIG. 2 is a diagram showing a configuration of a specific Embodiment 1 of the camera lens LA.

FIG. 3 is an axial aberration diagram of the camera lens LA according to Embodiment 1.

FIG. 4 is a magnification chromatism diagram of the camera lens LA according to the Embodiment 1.

FIG. 5 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 1.

FIG. 6 is a diagram showing a configuration of a specific Embodiment 2 of the camera lens LA.

FIG. 7 is an axial aberration diagram of the camera lens LA according to Embodiment 2.

FIG. 8 is a magnification chromatism diagram of the camera lens LA according to Embodiment 2.

FIG. 9 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 2.

FIG. 10 is a diagram showing a configuration of a specific Embodiment 3 of the above-described camera lens LA.

FIG. 11 is an axial aberration diagram of the camera lens LA according to Embodiment 3.

FIG. 12 is a magnification chromatism diagram of the camera lens LA according to Embodiment 3.

FIG. 13 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 3.

FIG. 14 is a diagram showing a configuration of a specific Embodiment 4 of the camera lens LA.

FIG. 15 is an axial aberration diagram of the camera lens LA according to Embodiment 4.

FIG. 16 is a magnification chromatism diagram of the camera lens LA according to Embodiment 4.

FIG. 17 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 4.

FIG. 18 is a diagram showing a configuration of a specific embodiment 5 of the above-described camera lens LA.

FIG. 19 is an axial aberration diagram of the camera lens LA according to Embodiment 5.

FIG. 20 is a magnification chromatism diagram of the camera lens LA according to Embodiment 5.

FIG. 21 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 5.

FIG. 22 is a diagram showing a configuration of a specific embodiment 6 of the above-described camera lens LA.

FIG. 23 is an axial aberration diagram of the camera lens LA according to Embodiment 6.

FIG. 24 is a magnification chromatism diagram of the camera lens LA according to Embodiment 6.

FIG. 25 is a field curvature and distortion diagram of the camera lens LA according to Embodiment 6.

DETAILED DESCRIPTION

An embodiment of a camera lens related to the present disclosure will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing a configuration of a camera lens according to an embodiment of the present disclosure. The camera lens LA is constituted by a lens group with eight lens, and a 1st lens L1, a 2nd lens L2, a 3rd lens L3, a 4th lens L4, a 5th lens L5, a 6th lens L6, a 7th lens L7 and an 8th lens L8 are configured successively from an object side to an image side. A glass flatplate GF is provided between the 8th lens L8 and an image surface. The glass flatplate GF may be a glass cover sheet or an optical filter having an IR cut-off function. Or, the glass flatplate GF may not be provided between the 8th lens L8 and the image surface.

The 1st lens L1 has a positive refractive power, the 2nd lens L2 has a negative refractive power, the 3rd lens L3 has a negative refractive power, the 4th lens L4 has a positive refractive power, the 5th lens L5 has a negative refractive power, the 6th lens L6 has a positive refractive power, the 7th lens L7 has a positive refractive power, and the 8th lens L8 has a negative refractive power. In order to better correct an aberration problem, it is most preferable to design surfaces of the eight lenses as aspherical.

The camera lens LA is a camera lens that satisfies conditional formulas (1)-(4) below:

1.00≤f1/f≤1.50 (1);

−8.00≤f2/f≤−5.00 (2);

−8.00≤f3/f≤−5.00 (3);

1.00≤R5/R6≤1.40 (4);

Where,

f: a focal length of the overall camera lens;

f1: a focal length of the 1st lens;

f2: a focal length of the 2nd lens;

f3: a focal length of the 3rd lens;

R5: a curvature radius of an object side surface of the 3rd lens;

R6: a curvature radius of an image side surface of the 3rd lens.

The conditional formula (1) specifies a positive refractive power of the 1st lens L1. Outside a range of the conditional formula (1), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (1) within a numerical range of a conditional formula (1-A) below:

1.05≤f1/f≤1.20 (1-A).

The conditional formula (2) specifies a negative refractive power of the 2nd lens L2. Outside a range of the conditional formula (2), it is difficult to correct on-axis and off-axis color, and aberration, with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (2) within a numerical range of a conditional formula (2-A) below:

−7.00≤f2/f≤−6.00 (2-A).

The conditional formula (3) specifies a negative refractive power of the 3rd lens L3. Outside a range of the conditional formula (3), it is difficult to correct on-axis and off-axis color, and aberration, with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (3) within a numerical range of a conditional formula (3-A) below:

−7.00≤f3/f≤−6.00 (3-A).

The conditional formula (4) specifies a ratio of the curvature radius of the object side surface to the curvature radius of the image side surface of the 3rd lens L3. Outside a range of the conditional formula (4), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (4) within a numerical range of a conditional formula (4-A) below:

1.20≤R5/R6≤1.35 (4-A).

The 4th lens L4 has a positive refractive power and satisfies a conditional formula (5) below:

5.00≤f4/f≤15.00 (5).

Where,

f: the focal length of the overall camera lens;

f4: a focal length of the 4th lens.

The conditional formula (5) specifies a positive refractive power of the 4th lens L4. Outside a range of the conditional formula (5), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (5) within a numerical range of a conditional formula (5-A) below:

6.50≤f4/f≤10.00 (5-A).

The 5th lens L5 has a negative refractive power and satisfies a conditional formula (6) below:

−30.00≤f5/f≤−2.00 (6).

Where,

f: the focal length of the overall camera lens;

f5: a focal length of the 5th lens.

The conditional formula (6) specifies a negative refractive power of the 5th lens L5. Outside a range of the conditional formula (6), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (6) within a numerical range of a conditional formula (6-A) below:

−27.00≤f5/f≤−3.50 (6-A).

The 6th lens L6 has a positive refractive power and satisfies a conditional formula (7) below:

5.00≤f6/f≤70.00 (7).

Where,

f: the focal length of the overall camera lens;

f6: a focal length of the 6th lens.

The conditional formula (7) specifies a positive refractive power of the 6th lens L6. Outside a range of the conditional formula (7), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (7) within a numerical range of a conditional formula (7-A) below:

8.00≤f6/f≤60.00 (7-A).

The 7th lens L7 has a positive refractive power and satisfies a conditional formula (8) below:

0.30≤f7/f≤1.50 (8)

Where,

f: the focal length of the overall camera lens;

f7: a focal length of the 7th lens.

The conditional formula (8) specifies a positive refractive power of the 7th lens L7. Outside a range of the conditional formula (8), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (8) within a numerical range of a conditional formula (8-A) below:

0.60≤f7/f≤0.80 (8-A).

The 8th lens L8 has a negative refractive power and satisfies a conditional formula (9) below:

−1.00≤f8/f≤−0.30 (9).

Where,

f: the focal length of the overall camera lens;

f8: a focal length of the 8th lens.

The conditional formula (9) specifies a negative refractive power of the 8th lens L8. Outside a range of the conditional formula (9), it is difficult to develop toward ultra-thinness and wide-angle with Fno≤1.45.

Here, it is most preferable to set a numerical range of the conditional formula (9) within a numerical range of a conditional formula (9-A) below:

−0.70≤f8/f≤−0.50 (9-A).

The eight lenses constituting the camera lens LA respectively satisfy the configurations and the conditional formulas as described above, which makes it possible to fabricate the camera lens having an excellent optical characteristic, an ultra-thin appearance with total track length (TTL)/image height (IH)≤1.65, a wide angle with 2ω≥70°, and an Fno with Fno≤1.45.

Hereinafter, the camera lens LA according to the present disclosure will be described with embodiments. Symbols recited in the respective embodiments are shown below. Distance, radius and center thickness are in units of mm.

f: a focal length of the overall camera lens LA;

f1: a focal length of a 1st lens L1;

f2: a focal length of a 2nd lens L2;

f3: a focal length of a 3rd lens L3;

f4: a focal length of a 4th lens L4;

f5: a focal length of a 5th lens L5;

f6: a focal length of a 6th lens L6;

f7: a focal length of a 7th lens L7;

f8: a focal length of an 8th lens L8;

Fno: F number;

2ω: field of view;

STOP: STOP;

S1: stop 1;

S2: stop 2;

S3: stop 3;

R: a curvature radius of an optical surface, and a central curvature radius in a case of a lens;

R1: a curvature radius of an object side surface of the 1st lens L1;

R2: a curvature radius of an image side surface of the 1st lens L1;

R3: a curvature radius of an object side surface of the 2nd lens L2;

R4: a curvature radius of an image side surface of the 2nd lens L2;

R5: a curvature radius of an object side surface of the 3rd lens L3;

R6: a curvature radius of an image side surface of the 3rd lens L3;

R7: a curvature radius of an object side surface of the 4th lens L4;

R8: a curvature radius of an image side surface of the 4th lens L4;

R9: a curvature radius of an object side surface of the 5th lens L5;

R10: a curvature radius of an image side surface of the 5th lens L5;

R11: a curvature radius of an object side surface of the 6th lens L6;

R12: a curvature radius of an image side surface of the 6th lens L6;

R13: a curvature radius of an object side surface of the 7th lens L7;

R14: a curvature radius of an image side surface of the 7th lens L7;

R15: a curvature radius of an object side surface of the 8th lens L8;

R16: a curvature radius of an image side surface of the 8th lens L8;

R17: a curvature radius of an object side surface of a glass flatplate GF;

R18: a curvature radius of an image side surface of the glass flatplate GF;

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

d1: a center thickness of the 1st lens L1;

d2: an on-axis distance from the 1st lens L1 to the object side surface of the 2nd lens L2;

d3: a center thickness of the 2nd lens L2;

d4: an on-axis distance from the image side surface of the 2nd lens L2 to the object side surface of the 3rd lens L3;

d5: a center thickness of the 3rd lens L3;

d6: an on-axis distance from the image side surface of the 3rd lens L3 to the object side surface of the 4th lens L4;

d7: a center thickness of the 4th lens L4;

d8: an on-axis distance from the image side surface of the 4th lens L4 to the object side surface of the 5th lens L5;

d9: a center thickness of the 5th lens L5;

d10: an on-axis distance from the image side surface of the 5th lens L5 to the object side surface of the 6th lens L6;

d11: a center thickness of the 6th lens L6;

d12: an on-axis distance from the image side surface of the 6th lens L6 to the object side surface of the 7th lens L7;

d13: a center thickness of the 7th lens L7;

d14: an on-axis distance from the image side surface of the 7th lens L7 to the object side surface of the 8th lens L8;

d15: a center thickness of the 8th lens L8;

d16: an on-axis distance from the image side surface of the 8th lens L8 to the object side surface of the glass flatplate GF;

d17: a center thickness of the glass flatplate GF;

d18: an on-axis distance from the image side surface of the glass flatplate GF to an image surface;

nd: a refractive index of d line;

nd1: a refractive index of d line of the 1st lens L1;

nd2: a refractive index of d line of the 2nd lens L2;

nd3: a refractive index of d line of the 3rd lens L3;

nd4: a refractive index of d line of the 4th lens L4;

nd5: a refractive index of d line of the 5th lens L5;

nd6: a refractive index of d line of the 6th lens L6;

nd7: a refractive index of d line of the 7th lens L7;

nd8: a refractive index of d line of the 8th lens L8;

nd9: a refractive index of d line of the glass flatplate GF;

ν: Abbe number;

ν1: Abbe number of the 1st lens L1;

ν2: Abbe number of the 2nd lens L2;

ν3: Abbe number of the 3rd lens L3;

ν4: Abbe number of the 4th lens L4;

ν5: Abbe number of the 5th lens L5;

ν6: Abbe number of the 6th lens L6;

ν7: Abbe number of the 7th lens L7;

ν8: Abbe number of the 8th lens L8;

ν9: Abbe number of the glass flatplate GF;

TTL: a total track length (an on-axis distance from the object side surface of the 1st lens L1 to the image surface);

LB: an on-axis distance from the image side surface of the 8th lens L8 to the image surface (including a thickness of the glass flatplate GF).

y=(x²/R)/[1+{1−(k+1)(x²/R²)}^1/2]+A4x⁴+A6x⁶+A8x⁸+A10x¹⁰+A12x¹²+A14x¹⁴+A16x¹⁶ (10)

For the sake of convenience, the aspherical surface shown in formula (10) is taken as aspheric surfaces of respective lens surfaces. However, the present disclosure is not limited to an aspherical polynomial form expressed by formula (10).

Embodiment 1

FIG. 2 is a diagram showing a configuration of a camera lens LA according to Embodiment 1. Data in Table 1 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 1, a center thickness of a lens and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 2 includes: conic coefficient k and aspherical coefficient. Data in Table 3 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 1

R (mm)
d (mm)
nd
νd
Effective radius (mm)

S1
∞

−0.600

1.800

R1
2.3242
d1
1.105
nd1
1.5831
ν1
59.39
1.780

R2
7.1205
d2
0.045

1.667

STOP
∞

0.049

1.653

R3
7.4847
d3
0.186
nd2
1.6613
ν2
20.37
1.583

R4
5.5774
d4
0.205

1.475

S2
∞

−0.160

1.460

R5
5.5740
d5
0.180
nd3
1.6509
ν3
21.52
1.462

R6
4.3500
d6
0.441

1.432

R7
6.9834
d7
0.517
nd4
1.5439
ν4
55.95
1.490

R8
10.1662
d8
0.367

1.635

R9
4.7548
d9
0.292
nd5
1.6397
ν5
23.53
1.706

R10
3.6307
d10
0.129

1.951

R11
−13.3965
d11
0.298
nd6
1.5439
ν6
55.95
2.026

R12
−8.8321
d12
−0.450

2.222

S3
∞

0.568

2.240

R13
5.3062
d13
0.844
nd7
1.5439
ν7
55.95
2.380

R14
−2.9560
d14
0.399

2.727

R15
−4.7717
d15
0.309
nd8
1.5352
ν8
56.12
3.107

R16
2.3786
d16
0.550

3.353

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.766

R18
∞
d18
0.295

3.820

TABLE 2

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.2014E−01
−1.4544E−04
4.4451E−03
−4.6724E−03
2.8111E−03
−9.7712E−04
1.8345E−04
−1.9466E−05

R2
5.5575E+00
−6.2816E−02
3.0919E−02
−3.1238E−03
−4.4264E−03
1.8821E−03
−2.7609E−04
9.4175E−06

R3
8.6375E+00
−8.6818E−02
5.5014E−02
−8.0669E−03
−7.6374E−03
4.2109E−03
−7.3769E−04
3.8810E−05

R4
−3.2543E+00
−1.2413E−03
−1.2393E−03
−6.8674E−04
−1.1030E−06
1.0007E−04
4.2387E−05
−2.0060E−06

R5
4.8405E−03
3.5462E−05
−3.3023E−05
2.2901E−04
5.9860E−05
−3.1933E−05
−2.4337E−05
7.1251E−06

R6
6.5289E+00
−4.3685E−02
3.3245E−02
−1.8013E−03
−7.5919E−03
3.8888E−03
−4.5261E−04
−6.5739E−05

R7
−4.7158E+01
−2.3374E−02
−5.2733E−03
1.2948E−02
−2.3619E−02
1.9421E−02
−7.7925E−03
1.2296E−03

R8
−6.0793E+00
−5.1653E−02
1.6297E−02
−1.2290E−02
2.3545E−03
1.5183E−04
−1.5804E−04
1.3738E−05

R9
−2.8029E+01
−1.0704E−01
4.1998E−02
−1.8052E−02
5.8877E−03
−2.3582E−03
7.0293E−04
−9.6023E−05

R10
−2.7076E+01
−8.5543E−02
1.5527E−02
2.7086E−03
−3.7215E−03
1.3740E−03
−2.4953E−04
1.9721E−05

R11
−4.0424E+01
1.1716E−03
−6.6739E−04
−4.4876E−04
−1.3996E−04
−8.7495E−06
2.1526E−07
1.0644E−06

R12
1.0895E+01
−3.1866E−03
−3.4863E−04
−8.1124E−05
−1.8738E−05
2.4336E−06
5.9661E−08
2.3225E−07

R13
−1.9509E+01
−2.0832E−03
−1.3915E−02
5.5677E−03
−2.0363E−03
4.5795E−04
−5.4068E−05
2.7476E−06

R14
−1.7258E+01
1.0684E−02
2.2332E−03
−2.9683E−03
7.0165E−04
−8.0554E−05
4.4206E−06
−8.4147E−08

R15
−7.9357E−01
−5.6471E−02
1.9904E−02
−3.5459E−03
4.0698E−04
−2.8632E−05
1.1181E−06
−1.8720E−08

R16
−1.4273E+01
−3.5512E−02
9.3180E−03
−1.7842E−03
1.9824E−04
−1.2579E−05
4.2838E−07
−5.4688E−09

TABLE 3

2ω (°)
73.6

Fno
1.27

f (mm)
5.162

f1 (mm)
5.455

f2 (mm)
−34.467

f3 (mm)
−32.337

f4 (mm)
38.791

f5 (mm)
−26.735

f6 (mm)
46.588

f7 (mm)
3.621

f8 (mm)
−2.925

TTL (mm)
6.380

LB (mm)
1.055

IH (mm)
3.928

TTL/IH
1.624

Table 19 presented later on shows values corresponding to parameters specified in the conditional formulas (1) to (9) according to Embodiment 1 to Embodiment 6. As shown in Table 19, Embodiment 1 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 1 is shown in FIG. 3, magnification chromatism is shown in FIG. 4, and field curvature and distortion is shown in FIG. 5. Further, field curvature S of FIG. 5 is a field curvature opposite to a sagittal image surface, and T is a field curvature opposite to a meridional image surface. So are they in Embodiments 2 to 6. As shown in Table 3, the camera lens LA according to Embodiment 1 has a wide angle, an ultra-thin appearance, and a bright Fno, as shown in FIG. 3 to FIG. 5, which makes it not difficult to understand that it has an excellent optical characteristic.

Embodiment 2

FIG. 6 is a diagram showing a configuration of a camera lens LA according to Embodiment 2. Data in Table 4 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 2, center thickness of a lens, and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 5 includes: conic coefficient k and aspherical coefficient. Data in Table 6 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 4

R (mm)
d (mm)
nd
νd
Effective radius (mm)

S1
∞

−0.600

1.800

R1
2.3562
d1
1.121
nd1
1.5831
ν1
59.39
1.790

R2
7.4516
d2
0.053

1.708

STOP
∞

0.044

1.679

R3
7.6478
d3
0.184
nd2
1.6613
ν2
20.37
1.609

R4
5.6617
d4
0.219

1.490

S2
∞

−0.170

1.470

R5
5.6075
d5
0.180
nd3
1.6509
ν3
21.52
1.471

R6
4.3616
d6
0.447

1.452

R7
7.0869
d7
0.504
nd4
1.5439
ν4
55.95
1.502

R8
9.9430
d8
0.341

1.631

R9
4.3691
d9
0.288
nd5
1.6397
ν5
23.53
1.707

R10
3.1310
d10
0.122

1.935

R11
−12.5054
d11
0.325
nd6
1.5439
ν6
55.95
2.043

R12
−8.2593
d12
−0.400

2.207

S3
∞

0.497

2.300

R13
3.8772
d13
0.836
nd7
1.5439
ν7
55.95
2.337

R14
−3.0399
d14
0.360

2.659

R15
−4.4823
d15
0.314
nd8
1.5352
ν8
56.12
3.027

R16
2.4170
d16
0.550

3.335

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.738

R18
∞
d18
0.317

3.795

TABLE 5

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.2216E−01
−9.7789E−05
4.4153E−03
−4.7015E−03
2.8077E−03
−9.7356E−04
1.8444E−04
−1.9562E−05

R2
5.7097E+00
−6.2722E−02
3.0842E−02
−3.1540E−03
−4.4346E−03
1.8842E−03
−2.7511E−04
9.5330E−06

R3
8.6335E+00
−8.7229E−02
5.5087E−02
−8.0412E−03
−7.6378E−03
4.1999E−03
−7.3939E−04
4.0958E−05

R4
−3.9933E+00
−1.2684E−03
−1.1423E−03
−7.0368E−04
−8.8672E−06
1.0845E−04
4.6015E−05
5.4879E−07

R5
−1.5771E+00
−9.6436E−04
−5.6161E−04
3.6493E−05
7.0541E−05
−9.3873E−06
−2.0916E−05
4.6118E−06

R6
6.2493E+00
−4.5508E−02
3.2984E−02
−1.6945E−03
−7.6043E−03
3.8378E−03
−4.6940E−04
−5.6367E−05

R7
−5.4823E+01
−2.2949E−02
−5.3848E−03
1.2632E−02
−2.3675E−02
1.9507E−02
−7.7619E−03
1.2048E−03

R8
−1.9084E+00
−5.1188E−02
1.5785E−02
−1.2356E−02
2.3553E−03
1.3284E−04
−1.6479E−04
1.7633E−05

R9
−3.7963E+01
−1.0563E−01
4.3064E−02
−1.8104E−02
5.7359E−03
−2.3666E−03
7.1084E−04
−9.1357E−05

R10
−3.6227E+01
−8.6624E−02
1.5836E−02
2.7993E−03
−3.7310E−03
1.3651E−03
−2.5008E−04
2.0537E−05

R11
−7.0816E+01
2.6344E−03
−1.9215E−04
−4.5418E−04
−1.5565E−04
−1.0852E−05
2.7177E−07
1.3950E−06

R12
9.8526E+00
−2.7804E−03
−1.5696E−04
−6.1795E−05
−2.3670E−05
6.9610E−07
5.9274E−08
2.7480E−07

R13
−2.5120E+01
−1.0275E−03
−1.4235E−02
5.5368E−03
−2.0339E−03
4.5811E−04
−5.4036E−05
2.7395E−06

R14
−1.2606E+01
1.1061E−02
2.3137E−03
−3.0177E−03
7.0024E−04
−8.0346E−05
4.4460E−06
−8.5562E−08

R15
−8.8444E−01
−5.6416E−02
1.9948E−02
−3.5432E−03
4.0708E−04
−2.8637E−05
1.1159E−06
−1.8720E−08

R16
−1.2022E+01
−3.4824E−02
9.2426E−03
−1.7839E−03
1.9850E−04
−1.2565E−05
4.2757E−07
−5.5695E−09

TABLE 6

2ω (°)
75.1

Fno
1.23

f (mm)
5.086

f1 (mm)
5.466

f2 (mm)
−34.263

f3 (mm)
−32.009

f4 (mm)
42.709

f5 (mm)
−19.014

f6 (mm)
43.550

f7 (mm)
3.272

f8 (mm)
−2.891

TTL (mm)
6.341

LB (mm)
1.077

IH (mm)
3.928

TTL/IH
1.614

As shown in Table 19, Embodiment 2 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 2 is shown in FIG. 7, magnification chromatism is shown in FIG. 8, and field curvature and distortion is shown in FIG. 9. As shown in Table 6, the camera lens LA according to Embodiment 2 has a wide angle, an ultra-thin appearance and a bright Fno, as shown in FIG. 7 to FIG. 9, which makes it not difficult to understand that it has an excellent optical characteristic.

Embodiment 3

FIG. 10 is a diagram showing a configuration of a camera lens LA according to Embodiment 3. Data in Table 7 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 3, center thickness of a lens and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 8 includes: conic coefficient k and aspherical coefficient. Data in Table 9 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 7

R (mm)
d (mm)
nd
νd
Effective radius (mm)

S1
∞

−0.600

1.800

R1
2.3264
d1
1.098
nd1
1.5831
ν1
59.39
1.770

R2
7.1031
d2
0.055

1.642

STOP
∞

0.039

1.624

R3
7.5207
d3
0.187
nd2
1.6613
ν2
20.37
1.565

R4
5.5761
d4
0.209

1.458

S2
∞

−0.160

1.440

R5
5.5775
d5
0.180
nd3
1.6509
ν3
21.52
1.443

R6
4.3452
d6
0.420

1.418

R7
7.0004
d7
0.520
nd4
1.5439
ν4
55.95
1.474

R8
10.1124
d8
0.359

1.627

R9
4.7362
d9
0.293
nd5
1.6397
ν5
23.53
1.701

R10
3.6338
d10
0.139

1.946

R11
−13.6377
d11
0.296
nd6
1.5439
ν6
55.95
2.018

R12
−8.7437
d12
−0.450

2.213

S3
∞

0.569

2.240

R13
5.2988
d13
0.865
nd7
1.5439
ν7
55.95
2.379

R14
−2.9228
d14
0.409

2.762

R15
−4.7340
d15
0.285
nd8
1.5352
ν8
56.12
3.180

R16
2.3556
d16
0.550

3.366

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.772

R18
∞
d18
0.308

3.825

TABLE 8

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.1784E−01
−1.3784E−04
4.4795E−03
−4.6697E−03
2.8100E−03
−9.7735E−04
1.8357E−04
−1.9327E−05

R2
5.6279E+00
−6.2798E−02
3.0944E−02
−3.1145E−03
−4.4255E−03
1.8818E−03
−2.7608E−04
9.5882E−06

R3
8.4979E+00
−8.6860E−02
5.4970E−02
−8.0870E−03
−7.6404E−03
4.2116E−03
−7.3727E−04
3.8690E−05

R4
−3.4170E+00
−1.3327E−03
−1.2655E−03
−6.8259E−04
−1.0649E−06
9.8043E−05
4.1237E−05
−2.1251E−06

R5
2.4192E−01
2.2351E−04
2.9103E−05
2.2678E−04
5.5580E−05
−3.2582E−05
−2.3998E−05
7.1983E−06

R6
6.5477E+00
−4.3781E−02
3.3163E−02
−1.7966E−03
−7.5814E−03
3.8919E−03
−4.5311E−04
−6.6769E−05

R7
−4.9447E+01
−2.3312E−02
−5.2008E−03
1.2950E−02
−2.3634E−02
1.9412E−02
−7.7921E−03
1.2341E−03

R8
−5.5782E+00
−5.1590E−02
1.6319E−02
−1.2293E−02
2.3520E−03
1.5220E−04
−1.5810E−04
1.3003E−05

R9
−2.7515E+01
−1.0709E−01
4.1922E−02
−1.8031E−02
5.9134E−03
−2.3494E−03
7.0324E−04
−9.7362E−05

R10
−2.6179E+01
−8.5438E−02
1.5529E−02
2.7107E−03
−3.7187E−03
1.3751E−03
−2.4949E−04
1.9553E−05

R11
−4.6409E+01
1.1335E−03
−7.6145E−04
−4.6049E−04
−1.3787E−04
−7.4113E−06
1.6844E−07
8.6313E−07

R12
1.1214E+01
−3.3491E−03
−3.5839E−04
−7.6728E−05
−1.7137E−05
2.6747E−06
5.5881E−08
2.2055E−07

R13
−1.7531E+01
−2.0831E−03
−1.3907E−02
5.5665E−03
−2.0370E−03
4.5785E−04
−5.4076E−05
2.7476E−06

R14
−1.7768E+01
1.1139E−02
2.2786E−03
−2.9650E−03
7.0140E−04
−8.0598E−05
4.4229E−06
−8.2427E−08

R15
−8.3041E−01
−5.6416E−02
1.9901E−02
−3.5460E−03
4.0700E−04
−2.8628E−05
1.1184E−06
−1.8708E−08

R16
−1.4663E+01
−3.5937E−02
9.3339E−03
−1.7833E−03
1.9825E−04
−1.2578E−05
4.2864E−07
−5.4289E−09

TABLE 9

2ω (°)
73.5

Fno
1.29

f (mm)
5.156

f1 (mm)
5.470

f2 (mm)
−33.943

f3 (mm)
−32.091

f4 (mm)
39.497

f5 (mm)
−27.254

f6 (mm)
43.863

f7 (mm)
3.597

f8 (mm)
−2.901

TTL (mm)
6.380

LB (mm)
1.068

IH (mm)
3.928

TTL/IH
1.624

As shown in Table 19, Embodiment 3 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 3 is shown in FIG. 11, magnification chromatism is shown in FIG. 12, and field curvature and distortion is shown in FIG. 13. As shown in Table 9, the camera lens LA according to Embodiment 3 has a wide angle, an ultra-thin appearance and a bright Fno, as shown in FIG. 11 to FIG. 13, which makes it not difficult to understand that it has an excellent optical characteristic.

Embodiment 4

FIG. 14 is a diagram showing a configuration of a camera lens LA according to Embodiment 4. Data in Table 10 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 4, center thickness of a lens and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 11 includes: conic coefficient k and aspherical coefficient. Data in Table 12 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 10

R (mm)
d (mm)
nd
νd
Effective radius (mm)

S1
∞

−0.600

1.800

R1
2.3294
d1
1.112
nd1
1.5831
ν1
59.39
1.780

R2
7.1824
d2
0.045

1.676

STOP
∞

0.048

1.658

R3
7.4766
d3
0.186
nd2
1.6613
ν2
20.37
1.593

R4
5.5786
d4
0.211

1.485

S2
∞

−0.170

1.470

R5
5.5883
d5
0.180
nd3
1.6509
ν3
21.52
1.471

R6
4.3661
d6
0.452

1.441

R7
7.0778
d7
0.516
nd4
1.5439
ν4
55.95
1.498

R8
10.3471
d8
0.367

1.640

R9
4.8832
d9
0.296
nd5
1.6397
ν5
23.53
1.709

R10
3.6660
d10
0.119

1.955

R11
−13.2851
d11
0.308
nd6
1.5439
ν6
55.95
2.043

R12
−8.8147
d12
−0.450

2.237

S3
∞

0.566

2.240

R13
4.9976
d13
0.832
nd7
1.5439
ν7
55.95
2.383

R14
−2.9782
d14
0.388

2.718

R15
−4.7616
d15
0.311
nd8
1.5352
ν8
56.12
3.125

R16
2.3847
d16
0.550

3.366

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.769

R18
∞
d18
0.296

3.824

TABLE 11

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.2002E−01
−6.3006E−05
4.4062E−03
−4.6779E−03
2.8119E−03
−9.7664E−04
1.8349E−04
−1.9530E−05

R2
5.4177E+00
−6.2847E−02
3.0888E−02
−3.1318E−03
−4.4276E−03
1.8824E−03
−2.7595E−04
9.3832E−06

R3
8.7248E+00
−8.6838E−02
5.5050E−02
−8.0497E−03
−7.6355E−03
4.2099E−03
−7.3812E−04
3.8940E−05

R4
−3.0008E+00
−1.0831E−03
−1.1888E−03
−6.8025E−04
5.0959E−06
1.0389E−04
4.3959E−05
−1.8338E−06

R5
−2.7767E−01
−2.0554E−04
−1.1316E−04
2.2489E−04
6.1961E−05
−3.1435E−05
−2.3957E−05
7.6194E−06

R6
6.4804E+00
−4.3661E−02
3.3309E−02
−1.8099E−03
−7.6024E−03
3.8871E−03
−4.5117E−04
−6.4209E−05

R7
−4.7211E+01
−2.3417E−02
−5.3066E−03
1.2943E−02
−2.3603E−02
1.9433E−02
−7.7933E−03
1.2240E−03

R8
−5.8494E+00
−5.1658E−02
1.6238E−02
−1.2297E−02
2.3488E−03
1.4669E−04
−1.5920E−04
1.4715E−05

R9
−2.8476E+01
−1.0685E−01
4.2145E−02
−1.8070E−02
5.8579E−03
−2.3672E−03
7.0338E−04
−9.4240E−05

R10
−2.9030E+01
−8.5683E−02
1.5573E−02
2.7165E−03
−3.7247E−03
1.3727E−03
−2.4959E−04
1.9916E−05

R11
−4.0167E+01
1.4037E−03
−4.9285E−04
−4.2997E−04
−1.4370E−04
−1.0235E−05
3.2008E−07
1.3252E−06

R12
1.0329E+01
−2.9714E−03
−2.9786E−04
−7.9101E−05
−2.0299E−05
2.2319E−06
6.6951E−08
2.4587E−07

R13
−2.0959E+01
−1.8843E−03
−1.3969E−02
5.5633E−03
−2.0359E−03
4.5808E−04
−5.4058E−05
2.7472E−06

R14
−1.6707E+01
1.0566E−02
2.2278E−03
−2.9760E−03
7.0156E−04
−8.0457E−05
4.4308E−06
−8.5182E−08

R15
−7.8573E−01
−5.6473E−02
1.9916E−02
−3.5453E−03
4.0698E−04
−2.8635E−05
1.1179E−06
−1.8710E−08

R16
−1.3690E+01
−3.5142E−02
9.2960E−03
−1.7846E−03
1.9832E−04
−1.2577E−05
4.2831E−07
−5.5036E−09

TABLE 12

2ω (°)
73.8

Fno
1.26

f (mm)
5.142

f1 (mm)
5.452

f2 (mm)
−34.611

f3 (mm)
−32.591

f4 (mm)
39.015

f5 (mm)
−25.422

f6 (mm)
47.020

f7 (mm)
3.562

f8 (mm)
−2.927

TTL (mm)
6.374

LB (mm)
1.056

IH (mm)
3.928

TTL/IH
1.623

As shown in Table 19, Embodiment 4 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 4 is shown in FIG. 15, magnification chromatism is shown in FIG. 16, and field curvature and distortion is shown in FIG. 17. As shown in Table 12, the camera lens LA according to Embodiment 4 has a wide angle, an ultra-thin appearance and a bright Fno, as shown in FIG. 15 to FIG. 17, which makes it not difficult to understand that it has an excellent optical characteristic.

Embodiment 5

FIG. 18 is a diagram showing a configuration of a camera lens LA according to Embodiment 5. Data in Table 13 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 5, center thickness of a lens and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 14 includes: conic coefficient k and aspherical coefficient. Data in Table 15 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 13

R (mm)
d (mm)
nd
νd
Effective radius (mm)

STOP
∞

−0.480

1.742

R1
2.2596
d1
0.991
nd1
1.5831
ν1
59.39
1.742

R2
6.6994
d2
0.066

1.710

S1
∞

0.030

1.680

R3
7.5614
d3
0.191
nd2
1.6613
ν2
20.37
1.598

R4
5.4284
d4
0.209

1.487

S2
∞

−0.150

1.480

R5
5.8031
d5
0.190
nd3
1.6509
ν3
21.52
1.478

R6
4.4714
d6
0.394

1.435

R7
7.6590
d7
0.542
nd4
1.5439
ν4
55.95
1.447

R8
12.6607
d8
0.324

1.604

R9
5.8684
d9
0.307
nd5
1.6397
ν5
23.53
1.675

R10
5.3574
d10
0.111

1.903

R11
−10.9022
d11
0.248
nd6
1.5439
ν6
55.95
2.066

R12
−10.2802
d12
−0.200

2.218

S3
∞

0.412

2.250

R13
5.9187
d13
0.806
nd7
1.5439
ν7
55.95
2.314

R14
−2.8415
d14
0.419

2.656

R15
−5.4221
d15
0.321
nd8
1.5352
ν8
56.12
2.951

R16
2.1997
d16
0.550

3.303

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.712

R18
∞
d18
0.326

3.771

TABLE 14

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.2808E−01
−3.3457E−04
4.5148E−03
−4.6633E−03
2.7759E−03
−9.9589E−04
1.7597E−04
−2.1199E−05

R2
4.2124E+00
−6.4414E−02
3.0884E−02
−3.2310E−03
−4.4336E−03
1.8753E−03
−2.7836E−04
9.0225E−06

R3
1.0211E+01
−8.5320E−02
5.5686E−02
−8.0994E−03
−7.5478E−03
4.2448E−03
−7.3445E−04
3.2933E−05

R4
−1.1357E+00
−5.4578E−04
−6.1643E−04
−2.5112E−04
−3.5099E−05
4.1237E−05
2.7716E−05
−4.2270E−07

R5
3.8518E−01
2.0023E−04
2.7428E−04
6.2523E−05
−8.4141E−06
−4.4683E−05
−1.9285E−05
−7.5831E−08

R6
6.7941E+00
−3.9701E−02
3.3100E−02
−1.6937E−03
−7.2391E−03
4.1265E−03
−4.5933E−04
−1.1072E−04

R7
−8.2926E+01
−2.4389E−02
−3.7177E−03
1.3166E−02
−2.3630E−02
1.9384E−02
−7.8099E−03
1.2430E−03

R8
−5.8433E+01
−5.2219E−02
1.7419E−02
−1.2080E−02
2.3226E−03
1.1435E−04
−1.7127E−04
1.0150E−05

R9
−2.7118E+01
−1.0495E−01
4.2980E−02
−1.8623E−02
5.8470E−03
−2.2735E−03
7.0128E−04
−1.0443E−04

R10
−4.5593E+01
−8.6773E−02
1.4984E−02
2.8575E−03
−3.5980E−03
1.3924E−03
−2.4825E−04
1.7221E−05

R11
1.8450E+00
−2.0229E−04
−3.0887E−04
−7.2986E−05
−1.3625E−05
−6.8453E−07
1.7365E−07
8.9029E−08

R12
1.9619E+00
−5.5564E−04
−7.3103E−06
8.4622E−06
1.7391E−06
−1.2970E−07
−6.2116E−08
−1.4933E−08

R13
−1.2682E+01
−2.5051E−04
−1.2610E−02
5.4834E−03
−2.0503E−03
4.5322E−04
−5.4405E−05
2.8737E−06

R14
−1.6217E+01
1.5119E−02
1.9726E−03
−3.0493E−03
7.0553E−04
−7.9409E−05
4.4579E−06
−9.2806E−08

R15
−1.4022E+00
−5.5740E−02
1.9710E−02
−3.5458E−03
4.0766E−04
−2.8667E−05
1.1189E−06
−1.8965E−08

R16
−1.2186E+01
−3.5751E−02
9.5477E−03
−1.7880E−03
1.9680E−04
−1.2596E−05
4.2883E−07
−5.2409E−09

TABLE 15

2ω (°)
75.0

Fno
1.43

f (mm)
5.007

f1 (mm)
5.403

f2 (mm)
−30.200

f3 (mm)
−31.750

f4 (mm)
34.336

f5 (mm)
−125.717

f6 (mm)
290.436

f7 (mm)
3.648

f8 (mm)
−2.884

TTL (mm)
6.296

LB (mm)
1.086

IH (mm)
3.928

TTL/IH
1.603

As shown in Table 19, Embodiment 5 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 5 is shown in FIG. 19, magnification chromatism is shown in FIG. 20, and field curvature and distortion is shown in FIG. 21. As shown in Table 15, the camera lens LA according to Embodiment 5 has a wide angle, an ultra-thin appearance and a bright Fno, as shown in FIG. 19 to FIG. 21, which makes it not difficult to understand that it has an excellent optical characteristic.

Embodiment 6

FIG. 22 is a diagram showing a configuration of a camera lens LA according to Embodiment 6. Data in Table 16 includes: curvature radius R of object sides and image sides of a 1st lens L1 to an 8th lens L8 constituting the camera lens LA according to Embodiment 6, center thickness of a lens and on-axis distance d between lenses, refractive index nd, Abbe number ν and effective radius. Data in Table 17 includes: conic coefficient k and aspherical coefficient. Data in Table 18 includes: 2ω, f, f1, f2, f3, f4, f5, f6, f7, f8, TTL, IH and TTL/IH.

TABLE 16

R (mm)
d (mm)
nd
νd
Effective radius (mm)

STOP
∞

−0.366

1.815

R1
2.3359
d1
1.106
nd1
1.5831
ν1
59.39
1.815

R2
7.0937
d2
0.067

1.745

S1
∞

0.020

1.720

R3
7.5568
d3
0.188
nd2
1.6613
ν2
20.37
1.657

R4
5.6002
d4
0.197

1.535

S2
∞

−0.150

1.529

R5
5.5750
d5
0.175
nd3
1.6509
ν3
21.52
1.500

R6
4.3620
d6
0.382

1.467

R7
7.2454
d7
0.513
nd4
1.5439
ν4
55.95
1.470

R8
10.4657
d8
0.314

1.620

R9
4.5749
d9
0.313
nd5
1.6397
ν5
23.53
1.695

R10
3.7409
d10
0.131

1.955

R11
−13.2013
d11
0.334
nd6
1.5439
ν6
55.95
2.028

R12
−8.7257
d12
−0.400

2.242

S3
∞

0.512

2.350

R13
5.0605
d13
0.876
nd7
1.5439
ν7
55.95
2.481

R14
−2.9146
d14
0.417

2.777

R15
−4.9041
d15
0.296
nd8
1.5352
ν8
56.12
3.213

R16
2.3266
d16
0.550

3.393

R17
∞
d17
0.210
nd9
1.5168
ν9
64.17
3.751

R18
∞
d18
0.292

3.802

TABLE 17

Conic coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12
A14
A16

R1
−3.1759E−01
−1.7714E−04
4.5712E−03
−4.6702E−03
2.8094E−03
−9.7634E−04
1.8419E−04
−1.8887E−05

R2
5.4572E+00
−6.2759E−02
3.0983E−02
−3.0984E−03
−4.4224E−03
1.8809E−03
−2.7642E−04
1.0068E−05

R3
7.9826E+00
−8.6946E−02
5.4826E−02
−8.1725E−03
−7.6455E−03
4.2211E−03
−7.3445E−04
3.5579E−05

R4
−3.3184E+00
−1.3430E−03
−1.3356E−03
−6.1968E−04
−3.2452E−07
8.4740E−05
3.4684E−05
−1.6651E−06

R5
4.9098E−01
4.0353E−04
1.3610E−04
2.4023E−04
4.6979E−05
−3.4144E−05
−2.5656E−05
7.4978E−06

R6
6.5709E+00
−4.3233E−02
3.2619E−02
−1.9041E−03
−7.5367E−03
3.9222E−03
−4.5301E−04
−7.8123E−05

R7
−5.3802E+01
−2.2954E−02
−4.8978E−03
1.3077E−02
−2.3608E−02
1.9396E−02
−7.8037E−03
1.2456E−03

R8
−8.4561E+00
−5.2462E−02
1.6801E−02
−1.2272E−02
2.3237E−03
1.5849E−04
−1.5314E−04
1.5181E−05

R9
−2.7612E+01
−1.0700E−01
4.1737E−02
−1.8185E−02
5.9622E−03
−2.3151E−03
7.1050E−04
−1.0051E−04

R10
−2.4769E+01
−8.5294E−02
1.5507E−02
2.7278E−03
−3.7018E−03
1.3802E−03
−2.4871E−04
1.9242E−05

R11
−6.4111E+01
1.4451E−03
−9.3484E−04
−4.9973E−04
−1.1827E−04
−3.8044E−06
7.1407E−07
7.9078E−07

R12
1.1430E+01
−3.7776E−03
−5.3166E−04
−6.4149E−05
−1.2583E−05
3.6645E−06
1.7854E−07
1.9476E−07

R13
−1.5726E+01
−1.1901E−03
−1.3815E−02
5.5513E−03
−2.0389E−03
4.5796E−04
−5.4078E−05
2.7391E−06

R14
−1.7824E+01
1.1296E−02
2.3607E−03
−2.9758E−03
7.0022E−04
−8.0417E−05
4.4485E−06
−8.6091E−08

R15
−5.4955E−01
−5.6431E−02
1.9897E−02
−3.5420E−03
4.0706E−04
−2.8645E−05
1.1176E−06
−1.8677E−08

R16
−1.3108E+01
−3.5820E−02
9.4230E−03
−1.7840E−03
1.9782E−04
−1.2569E−05
4.2846E−07
−5.4982E−09

TABLE 18

2ω (°)
75.4

Fno
1.35

f (mm)
4.921

f1 (mm)
5.502

f2 (mm)
−34.036

f3 (mm)
−32.681

f4 (mm)
40.991

f5 (mm)
−37.608

f6 (mm)
46.110

f7 (mm)
3.537

f8 (mm)
−2.910

TTL (mm)
6.343

LB (mm)
1.052

IH (mm)
3.928

TTL/IH
1.615

As shown in Table 19, Embodiment 6 satisfies the conditional formulas (1) to (9).

Axial aberration of the camera lens LA according to Embodiment 6 is shown in FIG. 23, magnification chromatism is shown in FIG. 24, and field curvature and distortion is shown in FIG. 25. As shown in Table 18, the camera lens LA according to Embodiment 6 has a wide angle, an ultra-thin appearance and a bright Fno, as shown in FIG. 23 to FIG. 25, which makes it not difficult to understand that it has an excellent optical characteristic.

Table 19 presented later on shows values corresponding to parameters specified in conditional formulas (1) to (9) according to Embodiment 1 to Embodiment 6.

TABLE 19

Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Embodiment 6

f1/f
1.057
1.075
1.061
1.060
1.079
1.118
Conditional formula (1)

f2/f
−6.677
−6.737
−6.583
−6.731
−6.032
−6.916
Conditional formula (2)

f3/f
−6.264
−6.294
−6.224
−6.338
−6.342
−6.641
Conditional formula (3)

R5/R6
1.281
1.286
1.284
1.280
1.298
1.278
Conditional formula (4)

f4/f
7.514
8.398
7.660
7.588
6.858
8.329
Conditional formula (5)

f5/f
−5.179
−3.739
−5.286
−4.944
−25.110
−7.642
Conditional formula (6)

f6/f
9.025
8.563
8.507
9.144
58.011
9.369
Conditional formula (7)

f7/f
0.701
0.643
0.698
0.693
0.729
0.719
Conditional formula (8)

f8/f
−0.567
−0.568
−0.563
−0.569
−0.576
−0.591
Conditional formula (9)

Symbol Description

LA: camera lens;

STOP: stop;

S1: stop 1;

S2: stop 2;

S3: stop 3;

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

d1: the center thickness of the 1st lens L1;

d2: the on-axis distance from the 1st lens L1 to the object side surface of the 2nd lens L2;

d3: the center thickness of the 2nd lens L2;

d4: the on-axis distance from the image side surface of the 2nd lens L2 to the object side surface of the 3rd lens L3;

d5: the center thickness of the 3rd lens L3;

d6: the on-axis distance from the image side surface of the 3rd lens L3 to the object side surface of the 4th lens L4;

d7: the center thickness of the 4th lens L4;

d8: the on-axis distance from the image side surface of the 4th lens L4 to the object side surface of the 5th lens L5;

d9: the center thickness of the 5th lens L5;

d10: the on-axis distance from the image side surface of the 5th lens L5 to the object side surface of the 6th lens L6;

d11: the center thickness of the 6th lens L6

d12: the on-axis distance from the image side surface of the 6th lens L6 to the object side surface of the 7th lens L7

d13: the center thickness of the 7th lens L7;

d14: the on-axis distance from the image side surface of the 7th lens L7 to the object side surface of the 8th lens L8;

d15: the center thickness of the 8th lens L8;

d16: the on-axis distance from the image side surface of the 8th lens L8 to the object side surface of the glass flatplate GF;

d17: the center thickness of the glass flatplate GF;

d18: the on-axis distance from the image side surface of the glass flatplate GF to the image surface;

nd: the refractive index of d line;

nd1: the refractive index of d line of the 1st lens L1;

nd2: the refractive index of d line of the 2nd lens L2;

nd3: the refractive index of d line of the 3rd lens L3;

nd4: the refractive index of d line of the 4th lens L4;

nd5: the refractive index of d line of the 5th lens L5;

nd6: the refractive index of d line of the 6th lens L6;

nd7: the refractive index of d line of the 7th lens L7;

nd8: the refractive index of d line of the 8th lens L8;

nd9: the refractive index of d line of the glass flatplate GF.

The scope of the present disclosure is not limited to the above-described embodiments, and any ordinarily skilled in the art, within the content disclosed by the present disclosure, may make equivalent modifications or variations, which should be covered within the protection scope of the claims.

Camera Lens

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Priority Claims (1)