Camera lens

TECHNICAL FIELD

The present invention relates to a camera lens, and in particular, to a camera lens suitable for portable module cameras, digital cameras, etc., which use CCD, CMOS and other imaging elements for high pixels. The camera lens is constituted by six lenses, and has a narrow full-field view angle (hereinafter referred to as 2ω) that is 52° or less with good optical characteristics when shooting, and a low height with TTL/IH being 1.60 or smaller when retracted.

BACKGROUND

With angle narrowing of a camera lens, a total length of the lenses (TTL) of the camera lens become longer. Therefore, in recent years, a camera lens having a narrow angle and good optical characteristics when shooting, and a low height after the lens barrel is retracted into the camera when not shooting to shorten the TTL, has been desired.

Technical development related to a camera lens including six lenses and having a narrow angle and good optical characteristics is progressing. As a camera lens including 6 lenses, the camera lens has a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a negative refractive power, and a sixth lens having a positive refractive power, sequentially arranged from an object side.

Regarding the camera lens, although 2ω is narrowed to 47.0°-47.2°, a ratio of an on-axis distance between an object side surface of the first lens and an image side surface of the sixth lens to the TTL during shooting is insufficient, resulting in an insufficient low height when retracted.

SUMMARY

An object of the present invention is to provide a camera lens which is constituted by six lenses and has a narrow angle and good optical characteristics when shooting, and a low height when retracted.

In order to achieve the object described above, a ratio of an on-axis distance between an object side surface of a first lens and an image side surface of a sixth lens to TTL when shooting, a ratio of a focal length of the first lens to a focal length of the second lens, a ratio of a curvature radius of an object side surface of a fifth lens to a focal length of the camera lens, a ratio of a center thickness of the first lens to the focal length of the camera lens, a ratio of an on-axis distance between an image side surface of a fourth lens and an object side surface of the fifth lens to the focal length of the camera lens have been intensively discussed, thereby obtaining the camera lens which solves the problem exiting in the prior art, and thus accomplishing the present invention.

Technical Solution 1 provides a camera lens including, from an object side: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a negative refractive power; and a sixth lens having a positive refractive power, and satisfies relational formulas (1)-(5):

DL/TTLwhen shooting≤0.60 (1)
−1.00≤f1/f2≤−0.80 (2)
−0.55≤R9/f≤−0.15 (3)
0.07≤d1/f≤0.11 (4)
0.11≤d8/f≤0.15 (5)

where DL represents an on-axis distance from an object side surface of the first lens to an image side surface of the sixth lens, TTL when shooting represents a total length of the camera lens when shooting, i.e., an on-axis distance from the object side surface of the first lens to an image surface, f represents a focal length of the camera lens, f1 represents a focal length of the first lens, f2 represents a focal length of the second lens, R9 represents a curvature radius of an object side surface of the fifth lens, d1 represents a center thickness of the first lens; and d8 represents an on-axis distance from an image side surface of the fourth lens to the object side surface of the fifth lens.

Technical solution 2 proposes a camera lens based on Technical solution 1, and further satisfying a relational formula (6):

0.50≤f1/f≤0.80 (6).

Technical solution 3 proposes a camera lens based on Technical solution 1, and further satisfying a relational formula (7):

−1.00≤f2/f≤−0.50 (7).

Technical solution 4 proposes a camera lens based on Technical solution 1 and further satisfying a relational formula (8):

0.59≤f3/f≤0.90 (8)

where f3 represents a focal length of the third lens.

Technical solution 5 proposes a camera lens based on Technical solution 1 and further satisfying a relational formula (9):

0.06≤d5/f≤0.10 (9)

where d5 represents a center thickness of the third lens.

The camera lens particularly provided by the present invention is suitable for portable module cameras, digital cameras, etc., which use CCD, CMOS and other imaging elements for high pixels. The camera lens includes six lenses and has a narrow angle with 2ω<52° and good optical characteristics when shooting, and a low height with TTL/IH<1.60 when retracted.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 1 of the present invention;

FIG. 2 is a diagram illustrating spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 1 of the present invention;

FIG. 3 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 2 of the present invention;

FIG. 4 is a diagram illustrating spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 2 of the present invention;

FIG. 5 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 3 of the present invention;

FIG. 6 is a diagram illustrating spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 3 of the present invention;

FIG. 7 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 4 of the present invention;

FIG. 8 is a diagram illustrating spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 4 of the present invention;

FIG. 9 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 5 of the present invention; and

FIG. 10 is a diagram illustrating spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 5 of the present invention.

DESCRIPTION OF EMBODIMENTS

An implementation manner of a camera lens according to the present invention will be described. The camera lens LA includes a lens system, and the lens system is a six-lens structure including, from an object side to an image side, 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. A glass plate GF is provided between the sixth lens L6 and an image surface. Cover glasses, various filters, etc. are available as the glass plate GF. In the present invention, the glass plate GF can be arranged in different positions, or can be omitted.

The first lens L1 is a lens having a positive refractive power, the second lens L2 is a lens having a negative refractive power, the third lens L3 is a lens having a positive refractive power, the fourth lens L4 is a lens having a negative refractive power, the fifth lens L5 is a lens having a negative refractive power, and the sixth lens L6 is a lens having a positive refractive power. Regarding surfaces of these six lenses, in order to correct various aberrations satisfactorily, it is desired to set each of these surfaces as an aspheric shape.

The camera lens LA satisfies the following relational formula (1):

DL/TTLwhen shooting≤0.60 (1)

The relational formula (1) defines a ratio of an on-axis distance between an object side surface S1 of the first lens L1 to an image side surface S12 of the sixth lens L6 to TTL when shooting. By setting it within a range of the relational formula (1), a low height when retracted is easy, therefore being preferable.

The camera lens LA further satisfies the following relational formula (2):

−1.00≤f1/f2≤−0.80 (2)

The relational formula (2) defines a ratio of a focal length f1 of the first lens L1 to a focal length f2 of the second lens L2. By setting it within a range of the relational formula (2), correction of on-axis and off-axis chromatic aberrations under a narrow angle is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (3):

−0.55≤R9/f≤−0.15 (3)

The relational formula (3) defines a ratio of a curvature radius R9 of an object side surface S9 of the fifth lens L5 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (3), correction of various aberrations under the low height when retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (4):

0.07≤d1/f≤0.11 (4)

The relational formula (4) defines a ratio of a center thickness d1 of the first lens L1 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (4), correction of various aberrations under the low height when retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (5):

0.11≤d8/f≤0.15 (5)

The relational formula (5) defines a ratio of an on-axis distance d8 between an image side surface S8 of the fourth lens L4 and an object side surface S9 of the fifth lens L5 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (5), correction of various aberrations under the low height when retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (6):

0.50≤f1/f≤0.80 (6)

The relational formula (6) defines the positive refractive power of the first lens L1 as a ratio of a focal length f1 of the first lens L1 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (6), correction of various aberrations under the low height when retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (7):

−1.00≤f2/f≤−0.50 (7)

The relational formula (7) defines the negative refractive power of the second lens L2 as a ratio of a focal length f2 of the second lens L2 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (7), correction of various aberrations under the low height when being retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (8):

0.59≤f3/f≤0.90 (8)

The relational formula (8) defines the positive refractive power of the third lens L3 as a ratio of a focal length f3 of the third lens L3 to the focal length f of the entire camera lens LA. By setting it in the range of the relational formula (8), correction of various aberrations under the low height when being retracted and under the narrow angle when shooting is easy, thereby being preferable.

The camera lens LA further satisfies the following relational formula (9):

0.06≤d5/f≤0.10 (9)

The relational formula (9) defines a ratio of a center thickness d5 of the third lens L3 to the focal length f of the entire camera lens LA. By setting it within a range of the relational formula (9), correction of various aberrations under the low height when being retracted and under the narrow angle when shooting is easy, thereby being preferable.

By making the six lenses constituting the camera lens LA satisfy the above configuration and relational formulas, it is possible to obtain a camera lens which is constituted by six lenses and has a narrow angle with 2ω<52° and good optical characteristics when shooting, and a low height with TTL/IH<1.60 when retracted.

EMBODIMENTS

Hereinafter, embodiments are provided for illustrating the camera lens LA of the present invention. The reference numerals described in the embodiments are listed below. In addition, the distance, the radius, and the center thickness have a unit of mm.

f: focal length of an entire camera lens LA

f1: focal length of a first lens L1

f2: focal length of a second lens L2

f3: focal length of a third lens L3

f4: focal length of a fourth lens L4

f5: focal length of a fifth lens L5

f6: focal length of a sixth lens L6

Fno: F-number

2ω: full-field view angle

STOP: aperture

R: curvature radius of an optical surface, center curvature radius in a case of a lens

R1: curvature radius of an object side surface S1 of the first lens L1

R2: curvature radius of an image side surface S2 of the first lens L1

R3: curvature radius of an object side surface S3 of the second lens L2

R4: curvature radius of an image side surface S4 of the second lens L2

R5: curvature radius of an object side surface S5 of the third lens L3

R6: curvature radius of an image side surface S6 of the third lens L3

R7: curvature radius of an object side surface S7 of the fourth lens L4

R8: curvature radius of an image side surface S8 of the fourth lens L4

R9: curvature radius of an object side surface S9 of the fifth lens L5

R10: curvature radius of an image side surface S10 of the fifth lens L5

R11: curvature radius of an object side surface S11 of the sixth lens L6

R12: curvature radius of an image side surface S12 of the sixth lens L6

R13: curvature radius of an object side surface S13 of a glass plate GF

R14: curvature radius of an image side surface S14 of the glass plate GF

d: center thickness of a lens or a distance between lenses

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

d1: center thickness of the first lens L1

d2: on-axis distance from the image side surface S2 of the first lens L1 to the object side surface S3 of the second lens L2

d3: center thickness of the second lens L2

d4: on-axis distance from the image side surface S4 of the second lens L2 to the object side surface S5 of the third lens L3

d5: center thickness of the third lens L3

d6: on-axis distance from the image side surface S6 of the third lens L3 to the object side surface S7 of the fourth lens L4

d7: center thickness of the fourth lens L4

d8: on-axis distance from the image side surface S8 of the fourth lens L4 to the object side surface S9 of the fifth lens L5

d9: center thickness of the fifth lens L5

d10: on-axis distance from the image side surface S10 of the fifth lens L5 to the object side surface S11 of the sixth lens L6

d11: center thickness of the sixth lens L6

d12: on-axis distance from the image side surface S12 of the sixth lens L6 to the object side surface S13 of the glass plate GF

d13: center thickness of the glass plate GF

d14: on-axis distance from the image side surface S14 of the glass plate GF to an image surface

DL: on-axis distance from the object side surface S1 of the first lens L1 to the image side surface S12 of the sixth lens L6

IH: maximum image height

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 glass plate GF

ν: Abbe number

ν1: Abbe number of the first lens L1

ν2: Abbe number of the second lens L2

ν3: Abbe number of the third lens L3

ν4: Abbe number of the fourth lens L4

ν5: Abbe number of the fifth lens L5

ν6: Abbe number of the sixth lens L6

νg: Abbe number of the glass plate GF

TTL: total length of the camera lens (on-axis distance from the object side surface S1 of the first lens L1 to the image surface)

y=(x²/R)/[1+{1−(k+1)(x²/R²)}^1/2]+A4x⁴+A6x⁶+A8x⁸+A10x¹⁰+A12x¹²+A14x¹⁴+A16x¹⁶+A18x¹⁸+A20x²⁰ (10)

For convenience, an aspheric surface of each lens surface uses an aspheric surface illustrated by formula (10). However, the present invention is not limited to the aspheric polynomial of formula (10).

Embodiment 1

FIG. 1 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 1 of the present invention when shooting and when retracted. For each of the first lens L1 to the sixth lens L6 constituting the camera lens LA of Embodiment 1, the curvature radius R of the object side and the image side, the center thickness of the lens or the distance d between the lenses, the refractive index nd, and the Abbe number ν are as shown in Table 1; a value of A when shooting and a value of A when retracted are as shown in Table 2; a cone coefficient k and an aspheric coefficient are as shown in Table 3; and 2ω, Fno, f, f1, f2, f3, f4, f5, f6, TTL, and IH are as shown in Table 4.

Effective

R
d
nd
νd
radium(mm)

STOP

∞
d0=
−0.853

2.673

S1
R1
3.82379
d1=
1.067
nd1
1.5438
ν1
56.03
2.674

S2
R2
16.89898
d2=
0.111

2.627

S3
R3
10.26802
d3=
0.476
nd2
1.6153
ν2
56.03
2.607

S4
R4
3.51422
d4=
0.747

2.507

S5
R5
6.72053
d5=
1.219
nd3
1.5438
ν3
56.03
2.594

S6
R6
−10.16391
d6=
0.207

2.545

S7
R7
20.58858
d7=
1.200
nd4
1.6700
ν4
19.39
2.406

S8
R8
8.27406
d8=
1.475

2.265

S9
R9
−5.49035
d9=
0.680
nd5
1.5346
ν5
1.53
2.318

S10
R10
−22.82994
d10=
0.050

2.918

S11
R11
3.38014
d11=
0.491
nd6
1.6610
ν6
20.53
3.181

S12
R12
3.59973
d12=
0.390

3.356

S13
R13
∞
d13=
0.210
ndg
1.5168
νg
64.17
3.612

S14
R14
∞
d14=
A

3.667

Reference wavelength = 588 nm

TABLE 2

When shooting
When retracted

A
4.657
0.500

TABLE 3

Cone coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12

S1
0.0000E+00
−1.1324E−03
1.5446E−03
−2.4903E−03
1.6116E−03
−5.8010E−04

S2
0.0000E+00
6.0832E−02
−7.9941E−02
5.5375E−02
−2.2921E−02
5.9065E−03

S3
0.0000E+00
7.2229E−02
−1.0828E−0 1
7.7489E−02
−3.3303E−02
9.0586E−03

S4
0.0000E+00
2.8248E−02
−5.6385E−02
4.1955E−02
−1.9616E−02
6.0206E−03

S5
0.0000E+00
1.9104E−02
−1.6924E−02
8.1799E−03
−3.3333E−03
1.0203E−03

S6
0.0000E+00
6.0107E−02
−4.8310E−02
2.1133E−02
−6.4598E−03
1.4934E−03

S7
0.0000E+00
4.7226E−02
−3.9388E−02
1.9047E−02
−6.5142E−03
1.7344E−03

S8
0.0000E+00
7.3324E−03
−7.5437E−03
4.0045E−03
−1.6875E−03
6.5480E−04

S9
0.0000E+00
3.1318E−02
−2.5635E−02
6.8241E−03
−5.0533E−04
−4.6860E−04

S10
0.0000E+00
2.3484E−02
−1.0183E−02
−9.9411E−04
1.4480E−03
−4.2861E−04

S11
0.0000E+00
−5.9399E−02
2.2464E−02
−8.8614E−03
2.4186E−03
−4.3080E−04

S12
0.0000E+00
−6.0357E−02
2.0661E−02
−6.6294E−03
1.5247E−03
−2.3906E−04

Cone coefficient
Aspheric coefficient

k
A14
A16
A18
A20
/

S1
0.0000E+00
1.2239E−04
−1.5190E−05
1.0285E−06
−2.9282E−08
/

S2
0.0000E+00
−9.5503E−04
9.3945E−05
−5.1143E−06
1.1741E−07
/

S3
0.0000E+00
−1.5658E−03
1.6643E−04
−9.9044E−06
2.5213E−07
/

S4
0.0000E+00
−1.1929E−03
1.4614E−04
−1.0049E−05
2.9625E−07
/

S5
0.0000E+00
−1.9929E−04
2.3009E−05
−1.4195E−06
3.5515E−08
/

S6
0.0000E+00
−2.5076E−04
2.7628E−05
−1.7307E−06
4.5737E−08
/

S7
0.0000E+00
−3.4288E−04
4.4828E−05
−3.3582E−06
1.0767E−07
/

S8
0.0000E+00
−1.8697E−04
3.3433E−05
−3.3491E−06
1.4604E−07
/

S9
0.0000E+00
2.3422E−04
−5.2863E−05
5.9810E−06
−2.6934E−07
/

S10
0.0000E+00
6.7040E−05
−6.1958E−06
3.2801E−07
−7.8299E−09
/

S11
0.0000E+00
4.9033E−05
−3.4808E−06
1.4268E−07
−2.6220E−09
/

S12
0.0000E+00
2.4701E−05
−1.6149E−06
6.0835E−08
−1.0109E−09
/

TABLE 4

2ω (°)
46.46

Fno
2.40

f (mm)
12.829

f1 (mm)
8.834

f2 (mm)
−8.923

f3 (mm)
7.633

f4 (mm)
−21.485

f5 (mm)
−13.709

f6 (mm)
44.370

TTL when shooting (mm)
12.980

TTL when retracted (mm)
8.823

IH (mm)
5.600

TTL when shooting/IH
2.318

TTL when retracted/IH
1.576

Table 21 described later shows the values corresponding to the parameters defined by the relational formulas (1) to (9) of Embodiment 1 to Embodiment 5.

Embodiment 1 is as shown in Table 21, and satisfies the relational formulas (1) to (9).

The spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 1 are as shown in FIG. 2. In addition, among the field curves in the figure, S is the field curve of a sagittal image surface, and T is the field curve of a meridional image surface, which also applies to Embodiment 2 to Embodiment 5. The camera lens LA of Embodiment 1 is as shown in FIG. 2, then it is known that 2ω=46.46°, and the camera lens has a low height with TTL/IH=1.576 when retracted and has good optical characteristics.

Embodiment 2

FIG. 3 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 2 of the present invention when shooting and when retracted. For each of the first lens L1 to the sixth lens L6 constituting the camera lens LA of Embodiment 2, the curvature radius R of the object side and the image side, the center thickness of the lens or the distance d between the lenses, the refractive index nd, and the Abbe number ν are as shown in Table 5; a value of A when shooting and a value of A when retracted are as shown in Table 6; a cone coefficient k and an aspheric coefficient are as shown in Table 7; and 2ω, Fno, f, f1, f2, f3, f4, f5, f6, TTL, and IH are as shown in Table 8.

TABLE 5

Effective radium

R
d
nd
νd
(mm)

STOP

∞
d0=
−1.161

2.661

S1
R1
3.36468
d1=
0.958
nd1
1.5438
ν1
56.03
2.661

S2
R2
7.74915
d2=
0.092

2.530

S3
R3
5.00514
d3=
0.388
nd2
1.6153
ν2
25.94
2.519

S4
R4
2.95304
d4=
0.601

2.369

S5
R5
6.32128
d5=
1.213
nd3
1.5438
ν3
56.03
2.390

S6
R6
−17.81805
d6=
0.222

2.291

S7
R7
−639.82239
d7=
1.030
nd4
1.6700
ν4
19.39
2.212

S8
R8
14.55758
d8=
1.471

2.092

S9
R9
−2.30661
d9=
0.577
nd5
1.5346
ν5
55.69
2.197

S10
R10
−3.26597
d10=
0.050

2.648

S11
R11
4.30016
d11=
0.667
nd6
1.6610
ν6
20.53
3.085

S12
R12
4.72203
d12=
0.390

3.304

S13
R13
∞
d13=
0.210
ndg
1.5168
νg
64.17
3.525

S14
R14
∞
d14=
A

3.576

Reference wavelength = 588 nm

TABLE 6

When shooting
When retracted

A
5.111
0.500

TABLE 7

Cone coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12

S1
0.0000E+00
−9.4163E−04
1.4316E−03
−1.9706E−03
1.2814E−03
−4.6318E−04

S2
0.0000E+00
6.3008E−02
−8.0091E−02
5.6740E−02
−2.4174E−02
6.4593E−03

S3
0.0000E+00
8.3279E−02
−1.1279E−0 1
7.7148E−02
−3.3148E−02
9.1924E−03

S4
0.0000E+00
4.4637E−02
−6.1465E−02
3.8524E−02
−1.7432E−02
5.5469E−03

S5
0.0000E+00
2.4334E−02
−1.3193E−02
4.9458E−03
−1.9604E−03
5.0009E−04

S6
0.0000E+00
3.1490E−02
−2.5548E−02
1.2702E−02
−5.7396E−03
2.0985E−03

S7
0.0000E+00
1.7408E−02
−2.3880E−02
1.6573E−02
−9.0935E−03
3.8130E−03

S8
0.0000E+00
−5.0747E−04
−1.0860E−02
1.4094E−02
−1.1440E−02
6.2355E−03

S9
0.0000E+00
5.1915E−02
−1.5940E−02
−4.6846E−03
7.7846E−03
−3.9407E−03

S10
0.0000E+00
4.6615E−02
−1.7028E−02
2.1051E−03
1.4101E−03
−8.9514E−04

S11
0.0000E+00
−3.1250E−02
6.7784E−03
−1.8808E−03
5.2698E−04
−1.2792E−04

S12
0.0000E+00
−3.9081E−02
1.3034E−02
−4.5146E−03
1.2011E−03
−2.2692E−04

Cone coefficient
Aspheric coefficient

k
A14
A16
A18
A20
/

S1
0.0000E+00
9.8333E−05
−1.2353E−05
8.4736E−07
−2.4226E−08
/

S2
0.0000E+00
−1.0916E−03
1.1316E−04
−6.5507E−06
1.6211E−07
/

S3
0.0000E+00
−1.6303E−03
1.7813E−04
−1.0891E−05
2.8385E−07
/

S4
0.0000E+00
−1.1760E−03
1.5892E−04
−1.2462E−05
4.3036E−07
/

S5
0.0000E+00
−4.3402E−05
−5.6110E−06
1.3933E−06
−7.9861E−08
/

S6
0.0000E+00
−5.0947E−04
7.5063E−05
−6.1092E−06
2.1076E−07
/

S7
0.0000E+00
−1.0650E−03
1.8241E−04
−1.7352E−05
7.0163E−07
/

S8
0.0000E+00
−2.1905E−03
4.7519E−04
−5.8005E−05
3.0617E−06
/

S9
0.0000E+00
1.0677E−03
−1.5806E−04
1.0891E−05
−1.4874E−07
/

S10
0.0000E+00
2.4075E−04
−3.5528E−05
2.8119E−06
−9.3441E−08
/

S11
0.0000E+00
2.1137E−05
−2.1482E−06
1.2224E−07
−2.9872E−09
/

S12
0.0000E+00
2.8587E−05
−2.2625E−06
1.0151E−07
−1.9644E−09
/

TABLE 8

2ω (°)
46.60

Fno
2.40

f (mm)
12.772

f1 (mm)
10.154

f2 (mm)
−12.614

f3 (mm)
8.735

f4 (mm)
−21.229

f5 (mm)
−18.579

f6 (mm)
44.684

TTL when shooting (mm)
12.980

TTL when retracted (mm)
8.369

IH (mm)
5.600

TTL when shooting/IH
2.318

TTL when retracted/IH
1.494

Embodiment 2 is as shown in Table 21, and satisfies the relational formulas (1) to (9).

The spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 2 are as shown in FIG. 4. The camera lens LA of Embodiment 2 is as shown in FIG. 4, then it is known that 2ω=46.60°, and the camera lens has a low height with TTL/IH=1.494 when retracted and has good optical characteristics.

Embodiment 3

FIG. 5 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 3 of the present invention when shooting and when retracted. For each of the first lens L1 to the sixth lens L6 constituting the camera lens LA of Embodiment 3, the curvature radius R of the object side and the image side, the center thickness of the lens or the distance d between the lenses, the refractive index nd, and the Abbe number ν are as shown in Table 9; a value of A when shooting and a value of A when retracted are as shown in Table 10; a cone coefficient k and an aspheric coefficient are as shown in Table 11; and 2ω, Fno, f, f1, f2, f3, f4, f5, f6, TTL, and IH are as shown in Table 12.

TABLE 9

Effective radium

R
d
nd
νd
(mm)

STOP

∞
d0=
−0.918

2.716

S1
R1
3.61332
d1=
1.200
nd1
1.5444
ν1
55.82
2.716

S2
R2
128.71517
d2=
0.050

2.657

S3
R3
12.26442
d3=
0.474
nd2
1.6153
ν2
25.94
2.626

S4
R4
3.32161
d4=
0.613

2.409

S5
R5
8.70521
d5=
1.254
nd3
1.5444
ν3
55.82
2.429

S6
R6
−17.61580
d6=
0.030

2.373

S7
R7
10.37950
d7=
0.565
nd4
1.6153
ν4
25.94
2.208

S8
R8
8.09919
d8=
1.894

2.007

S9
R9
−2.17655
d9=
0.536
nd5
1.5346
ν5
55.69
2.131

S10
R10
−3.54016
d10=
0.050

2.652

S11
R11
4.62541
d11=
0.602
nd6
1.6449
ν6
22.54
3.179

S12
R12
5.56284
d12=
0.390

3.347

S13
R13
∞
d13=
0.210
ndg
1.5168
νg
64.17
3.586

S14
R14
∞
d14=
A

3.640

Reference wavelength = 588 nm

TABLE 10

When shooting
When retracted

A
5.111
0.500

TABLE 11

Cone coefficient
Aspheric coefficient

k
A4
A6
A8
A10
Al2

S1
0.0000E+00
−2.3119E−03
1.7289E−03
−2.4684E−03
1.6105E−03
−5.8060E−04

S2
0.0000E+00
6.3492E−02
−7.9790E−02
5.5385E−02
−2.2923E−02
5.9060E−03

S3
0.0000E+00
5.7465E−02
−7.6752E−02
5.1683E−02
−2.1146E−02
5.4689E−03

S4
8.5403E−03
9.1419E−04
−3.3555E−03
−5.4271E−03
5.4198E−03
−2.4276E−03

S5
0.0000E+00
8.3932E−03
2.2930E−03
−4.5811E−03
2.6403E−03
−1.0318E−03

S6
0.0000E+00
1.9710E−03
2.2578E−02
−2.7947E−02
1.4761E−02
−4.4135E−03

S7
0.0000E+00
−9.7342E−03
1.2342E−02
−7.7754E−03
−2.1883E−03
4.1405E−03

S8
0.0000E+00
−1.1655E−02
−2.8063E−03
1.2741E−02
−1.4097E−02
8.4838E−03

S9
0.0000E+00
5.7201E−02
−2.7457E−02
1.7746E−02
−1.5742E−02
1.0939E−02

S10
0.0000E+00
4.3733E−02
−1.4538E−02
−8.0595E−04
3.0516E−03
−1.4204E−03

S11
0.0000E+00
−2.7501E−02
5.0636E−03
−9.9409E−04
1.0371E−04
1.3978E−05

S12
0.0000E+00
−3.1645E−02
9.9107E−03
−3.2084E−03
7.6541E−04
−1.2399E−04

Cone coefficient
Aspheric coefficient

k
A14
A16
A18
A20
/

S1
0.0000E+00
1.2233E−04
−1.5192E−05
1.0289E−06
−2.9186E−08
/

S2
0.0000E+00
−9.5509E−04
9.3941E−05
−5.1141E−06
1.1765E−07
/

S3
0.0000E+00
−8.8833E−04
8.7080E−05
−4.6555E−06
1.0253E−07
/

S4
8.5403E−03
6.4848E−04
−1.0335E−04
8.9942E−06
−3.2953E−07
/

S5
0.0000E+00
2.9190E−04
−5.1859E−05
5.0403E−06
−2.0581E−07
/

S6
0.0000E+00
8.1599E−04
−9.3377E−05
6.0331E−06
−1.6587E−07
/

S7
0.0000E+00
−1.8385E−03
4.0215E−04
−4.5168E−05
2.0892E−06
/

S8
0.0000E+00
−3.0068E−03
6.3369E−04
−7.3982E−05
3.7033E−06
/

S9
0.0000E+00
−4.7120E−03
1.1968E−03
−1.6504E−04
9.5650E−06
/

S10
0.0000E+00
3.4649E−04
−4.8907E−05
3.7656E−06
−1.2196E−07
/

S11
0.0000E+00
−7.0901E−06
1.0503E−06
−6.9332E−08
1.7266E−09
/

S12
0.0000E+00
1.2999E−05
−8.4489E−07
3.1451E−08
−5.2400E−10
/

TABLE 12

2ω (°)
45.28

Fno
2.43

f (mm)
13.202

f1 (mm)
6.806

f2 (mm)
−7.556

f3 (mm)
10.885

f4 (mm)
−66.160

f5 (mm)
−12.248

f6 (mm)
34.005

TTL when shooting (mm)
12.980

TTL when retracted (mm)
8.369

IH (mm)
5.600

TTL when shooting/IH
2.318

TTL when retracted/IH
1.494

Embodiment 3 is as shown in Table 21, and satisfies the relational formulas (1) to (9).

The spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 3 are as shown in FIG. 6. The camera lens LA of Embodiment 3 is as shown in FIG. 6, then it is known that 2ω=45.28°, and the camera lens has a low height with TTL/IH=1.494 when retracted, and has good optical characteristics.

Embodiment 4

FIG. 7 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 4 of the present invention when shooting and when retracted. For each of the first lens L1 to the sixth lens L6 constituting the camera lens LA of Embodiment 4, the curvature radius R of the object side and the image side, the center thickness of the lens or the distance d between the lenses, the refractive index nd, and the Abbe number ν are as shown in Table 13; a value of A when shooting and a value of A when retracted are as shown in Table 14; a cone coefficient k and an aspheric coefficient are as shown in Table 15; and 2ω, Fno, f, f1, f2, f3, f4, f5, f6, TTL, and IH are as shown in Table 16.

TABLE 13

Effective radium

R
d
nd
νd
(mm)

STOP

∞
d0=
−0.717

2.599

S1
R1
4.08566
d1=
1.200
nd1
1.5438
ν1
56.03
2.603

S2
R2
−237.54574
d2=
0.053

2.583

S3
R3
34.46043
d3=
0.574
nd2
1.6153
ν2
25.94
2.572

S4
R4
4.01344
d4=
0.670

2.492

S5
R5
9.33436
d5=
1.114
nd3
1.5438
ν3
56.03
2.594

S6
R6
−11.09817
d6=
0.317

2.538

S7
R7
8.20131
d7=
0.923
nd4
1.6700
ν4
19.39
2.409

S8
R8
6.90328
d8=
1.517

2.263

S9
R9
−6.80701
d9=
0.633
nd5
1.5346
ν5
55.69
2.317

S10
R10
207.86739
d10=
0.050

2.905

S11
R11
3.29792
d11=
0.477
nd6
1.6610
ν6
20.53
3.097

S12
R12
3.46324
d12=
0.390

3.277

S13
R13
∞
d13=
0.210
ndg
1.5168
νg
64.17
3.579

S14
R14
∞
d14=
A

3.636

Reference wavelength = 588 nm

TABLE 14

When shooting
When retracted

A
4.524
0.500

TABLE 15

Cone coefficient
Aspheric coefficient

k
A4
A6
A8
A10
A12

S1
0.0000E+00
−1.2497E−03
1.5275E−03
−2.4896E−03
1.6123E−03
−5.8006E−04

S2
0.0000E+00
6.0618E−02
−7.9940E−02
5.5380E−02
−2.2920E−02
5.9064E−03

S3
0.0000E+00
5.8784E−02
−8.8083E−02
6.2302E−02
−2.6386E−02
7.0632E−03

S4
0.0000E+00
1.1848E−02
−2.8958E−02
1.9007E−02
−8.1651E−03
2.4382E−03

S5
0.0000E+00
1.8954E−02
−1.3849E−02
3.9425E−03
−9.4500E−04
3.0340E−04

S6
0.0000E+00
4.0975E−02
−3.2491E−02
1.1828E−02
−2.4716E−03
3.0324E−04

S7
0.0000E+00
3.0700E−02
−2.4585E−02
8.8107E−03
−1.3895E−03
−2.5722E−05

S8
0.0000E+00
8.0874E−03
−7.8919E−03
2.5321E−03
−2.5082E−04
4.1482E−06

S9
0.0000E+00
3.3241E−02
−3.1200E−02
1.1770E−02
−3.5902E−03
8.2278E−04

S10
0.0000E+00
1.5776E−02
−7.4924E−03
−9.9142E−04
9.3073E−04
−2.1139E−04

S11
0.0000E+00
−7.6150E−02
2.8300E−02
−9.9970E−03
2.3619E−03
−3.5356E−04

S12
0.0000E+00
−6.9867E−02
2.2431E−02
−6.7555E−03
1.4944E−03
−2.3216E−04

Cone coefficient
Aspheric coefficient

k
A14
A16
A18
A20
/

S1
0.0000E+00
1.2239E−04
−1.5191E−05
1.0283E−06
−2.9251E−08
/

S2
0.0000E+00
−9.5504E−04
9.3943E−05
−5.1143E−06
1.1741E−07
/

S3
0.0000E+00
−1.2005E−03
1.2541E−04
−7.3293E−06
1.8306E−07
/

S4
0.0000E+00
−4.8373E−04
6.0043E−05
−4.2079E−06
1.2684E−07
/

S5
0.0000E+00
−7.3256E−05
1.0104E−05
−7.1922E−07
2.0538E−08
/

S6
0.0000E+00
−1.5561E−05
−1.3296E−06
2.7323E−07
−1.3679E−08
/

S7
0.0000E+00
5.4876E−05
−1.1261E−05
1.1144E−06
−4.6599E−08
/

S8
0.0000E+00
−1.2625E−05
5.1889E−06
−7.6808E−07
4.3283E−08
/

S9
0.0000E+00
−1.2148E−04
8.7085E−06
−1.9243E−08
−2.1407E−08
/

S10
0.0000E+00
2.3580E−05
−1.3682E−06
3.9208E−08
−5.1627E−10
/

S11
0.0000E+00
3.2280E−05
−1.7152E−06
4.9148E−08
−6.4574E−10
/

S12
0.0000E+00
2.4491E−05
−1.6807E−06
6.8041E−08
−1.2381E−09
/

TABLE 16

2ω (°)
47.53

Fno
2.40

f (mm)
12.477

f1 (mm)
7.399

f2 (mm)
−7.436

f3 (mm)
9.506

f4 (mm)
−91.084

f5 (mm)
−12.317

f6 (mm)
48.630

TTL when shooting (mm)
12.652

TTL when retracted (mm)
8.628

IH (mm)
5.600

TTL when shooting/IH
2.259

TTL when retracted/IH
1.541

Embodiment 4 is as shown in Table 21, and satisfies the relational formulas (1) to (9).

The spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 4 are as shown in FIG. 8. The camera lens LA of Embodiment 4 is as shown in FIG. 8, then it is known that 2ω=47.53°, and the camera lens has a low height with TTL/IH=1.541 when retracted, and has good optical characteristics.

Embodiment 5

FIG. 9 is a diagram illustrating a schematic configuration of a camera lens LA of Embodiment 5 of the present invention when shooting and when retracted. For each of the first lens L1 to the sixth lens L6 constituting the camera lens LA of Embodiment 5, the curvature radius R the object side and the image side, the center thickness of the lens or the distance d between the lenses, the refractive index nd, and the Abbe number ν are as shown in Table 17; a value of A when shooting and a value of A when retracted are as shown in Table 18; a cone coefficient k and an aspheric coefficient are as shown in Table 19; and 2ω, Fno, f, f1, f2, f3, f4, f5, f6, TTL, and IH are as shown in Table 20.

TABLE 17

Effective radium

R

d

nd

νd

(mm)

STOP

∞
d0=
−0.828

2.599

S1
R1
3.71815
d1=
1.147
nd1
1.5266
ν1
76.49
2.599

S2
R2
29.47395
d2=
0.064

2.543

S3
R3
11.81773
d3=
0.440
nd2
1.5532
ν2
42.92
2.490

S4
R4
3.46196
d4=
0.537

2.287

S5
R5
5.07886
d5=
0.867
nd3
1.5895
ν3
31.53
2.297

S6
R6
29.25045
d6=
0.576

2.247

S7
R7
13.84292
d7=
0.928
nd4
1.6713
ν4
19.24
2.171

S8
R8
11.63934
d8=
1.435

2.131

S9
R9
−4.77507
d9=
0.680
nd5
1.5945
ν5
30.21
2.228

S10
R10
−13.47461
d10=
0.050

2.738

S11
R11
3.43244
d11=
0.662
nd6
1.5717
ν6
37.63
3.124

S12
R12
3.67026
d12=
0.390

3.413

S13
R13
∞
d13=
0.210
ndg
1.5168
νg
64.17
3.514

S14
R14
∞
d14=
A

3.574

Reference wavelength = 588 nm

TABLE 18

When shooting
When retracted

A
4.427
0.500

TABLE 19

Cone coefficient
Aspheric coefficient

k
A4
A6
A8
A10
Al2

S1
0.0000E+00
−1.0682E−03
1.4607E−03
−2.4986E−03
1.6129E−03
−5.7976E−04

S2
0.0000E+00
6.1390E−02
−8.0030E−02
5.5358E−02
−2.2922E−02
5.9067E−03

S3
0.0000E+00
6.3906E−02
−9.3993E−02
6.5796E−02
−2.7344E−02
7.1150E−03

S4
0.0000E+00
1.8794E−02
−3.3964E−02
1.7664E−02
−4.4546E−03
1.3666E−04

S5
0.0000E+00
2.3711E−02
−1.1639E−02
−1.8922E−03
3.6549E−03
−1.7959E−03

S6
0.0000E+00
2.5832E−02
−1.2064E−02
−2.7218E−03
4.1472E−03
−1.8459E−03

S7
0.0000E+00
1.5177E−02
−9.4782E−03
−8.5264E−04
3.1573E−03
−1.7929E−03

S8
0.0000E+00
1.0451E−02
−1.1910E−02
8.2882E−03
−5.6033E−03
3.0207E−03

S9
0.0000E+00
4.4785E−02
−2.7820E−02
3.0395E−03
3.2331E−03
−2.4144E−03

S10
0.0000E+00
2.4137E−02
−5.1809E−03
−3.9879E−03
2.0985E−03
−4.9138E−04

S11
0.0000E+00
−6.0523E−02
2.4367E−02
−8.9466E−03
2.1650E−03
−3.3215E−04

S12
0.0000E+00
−5.5601E−02
1.7815E−02
−5.0046E−03
9.9827E−04
−1.3614E−04

Cone coefficient
Aspheric coefficient

k
A14
A16
A18
A20
/

S1
0.0000E+00
1.2239E−04
−1.5196E−05
1.0277E−06
−2.9224E−08
/

S2
0.0000E+00
−9.5501E−04
9.3943E−05
−5.1137E−06
1.1723E−07
/

S3
0.0000E+00
−1.1636E−03
1.1529E−04
−6.2482E−06
1.3939E−07
/

S4
0.0000E+00
2.5307E−04
−7.3291E−05
8.7444E−06
−3.9856E−07
/

S5
0.0000E+00
5.2294E−04
−9.2235E−05
8.9713E−06
−3.6836E−07
/

S6
0.0000E+00
4.9748E−04
−8.3961E−05
7.9995E−06
−3.2723E−07
/

S7
0.0000E+00
6.0738E−04
−1.2894E−04
1.5405E−05
−7.8705E−07
/

S8
0.0000E+00
−1.0467E−03
2.1970E−04
−2.5600E−05
1.2733E−06
/

S9
0.0000E+00
8.1513E−04
−1.4683E−04
1.2960E−05
−3.9940E−07
/

S10
0.0000E+00
7.1960E−05
−7.2355E−06
4.6275E−07
−1.3609E−08
/

S11
0.0000E+00
3.1911E−05
−1.8832E−06
6.4094E−08
−1.0094E−09
/

S12
0.0000E+00
1.2399E−05
−7.3202E−07
2.5754E−08
−4.1582E−10
/

TABLE 20

2ω (°)
47.56

Fno
2.40

f (mm)
12.476

f1 (mm)
7.703

f2 (mm)
−8.121

f3 (mm)
11.161

f4 (mm)
−131.312

f5 (mm)
−14.222

f6 (mm)
38.007

TTL when shooting (mm)
12.413

TTL when retracted (mm)
8.486

IH (mm)
5.600

TTL when shooting/IH
2.217

TTL when retracted/IH
1.515

Embodiment 5 is as shown in Table 21, and satisfies the relational formulas (1) to (9).

The spherical aberration, astigmatism, and distortion of the camera lens LA of Embodiment 5 are as shown in FIG. 10. The camera lens LA of Embodiment 5 is as shown in FIG. 10, then it is known that 2ω=47.56°, and the camera lens has a low height with TTL/IH=1.515 when retracted, and has good optical characteristics.

Table 21 shows the values corresponding to the parameters defined by the relational formulas (1) to (9) of Embodiment 1 to Embodiment 5.

TABLE 21

Embodiment
Embodiment
Embodiment
Embodiment
Embodiment

1
2
3
4
5
Notes

DL/TTL
0.595
0.560
0.560
0.596
0.595
Formula (1)

when

shooting

f1/f2
−0.990
−0.805
−0.901
−0.995
−0.949
Formula (2)

R9/f
−0.428
−0.181
−0.165
−0.546
−0.383
Formula (3)

d1/f
0.083
0.075
0.091
0.096
0.092
Formula (4)

d8/f
0.115
0.115
0.143
0.122
0.115
Formula (5)

f1/f
0.689
0.795
0.516
0.593
0.617
Formula (6)

f2/f
−0.696
−0.988
−0.572
−0.596
−0.651
Formula (7)

f3/f
0.595
0.684
0.824
0.762
0.895
Formula (8)

d5/f
0.095
0.095
0.095
0.089
0.070
Formula (9)

Number	Name	Date	Kind
20160109688	Jo	Apr 2016	A1
20160124191	Hashimoto	May 2016	A1
20200209546	Zhao	Jul 2020	A1
20200355891	Ye	Nov 2020	A1

Number	Date	Country
110262005	Sep 2019	CN
110346911	Oct 2019	CN

Camera lens

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