Camera optical lens
The present disclosure relates to the field of optical lens, and provides a camera optical lens, including, from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies: 6.00≤R2/R1≤25.00, 2.00≤(R7+R8)/(R7−R8)≤9.00, and 3.00≤(d5+d9)/d7≤9.00. R1 represents a curvature radius of an object side surface of the first lens, R2 represents a curvature radius of an image side surface of the first lens, R7 represents a curvature radius of an object side surface of the fourth lens, R8 represents a curvature radius of an image side surface of the fourth lens, d5 represents an on-axis thickness of the third lens, d7 represents an on-axis thickness of the fourth lens, and d9 represents an on-axis thickness of the fifth lens.
1 . A camera optical lens, comprising, from an object side to an image side in sequence, a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, and a sixth lens with a negative refractive power;
wherein the camera optical lens satisfies the following conditions:
6.
≤
R
2
/
R
1
≤
25.
;
2.
≤
(
R
7
+
R
8
)
/
(
R
7
-
R
8
)
≤
9.
;
and
3.
≤
(
d
5
+
d
9
)
/
d
7
≤
9.
;
wherein
R1 represents a curvature radius of an object side surface of the first lens;
R2 represents a curvature radius of an image side surface of the first lens;
R7 represents a curvature radius of an object side surface of the fourth lens;
R8 represents a curvature radius of an image side surface of the fourth lens;
d5 represents an on-axis thickness of the third lens;
d7 represents an on-axis thickness of the fourth lens; and
d9 represents an on-axis thickness of the fifth lens.
2 . The camera optical lens according to claim 1 , further satisfies the following condition:
2.
≤
TTL
/
f
≤
2.3
;
wherein
TTL represents a total track length of the camera optical lens; and
f represents a focal length of the camera optical lens.
3 . The camera optical lens according to claim 1 , further satisfies the following condition:
-
6.
≤
f
6
/
d
11
≤
-
3.
;
wherein
f6 represents a focal length of the sixth lens; and
d11 represents an on-axis thickness of the sixth lens.
4 . The camera optical lens according to claim 1 , further satisfies the following condition:
2.5
≤
f
2
/
f
3
≤
7.
;
wherein
f2 represents a focal length of the second lens; and
f3 represents a focal length of the third lens.
5 . The camera optical lens according to claim 1 , wherein the object side surface of the first lens is concave in a paraxial region, and the image side surface of the first lens is convex in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
-
5.26
≤
f
1
/
f
≤
-
1.23
;
-
2.8
≤
(
R
1
+
R
2
)
/
(
R
1
-
R
2
)
≤
-
0.72
;
and
0.02
≤
d
1
/
TTL
≤
0.06
;
wherein
f1 represents a focal length of the first lens;
f represents a focal length of the camera optical lens;
d1 represents an on-axis thickness of the first lens; and
TTL represents a total track length of the camera optical lens.
6 . The camera optical lens according to claim 1 , wherein an object side surface of the second lens is convex in a paraxial region, and an image side surface of the second lens is concave in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
1.5
≤
f
2
/
f
≤
11.95
;
-
54.86
≤
(
R
3
+
R
4
)
/
(
R
3
-
R
4
)
≤
-
4.92
;
and
0.03
≤
d
3
/
TTL
≤
0.11
;
wherein
f2 represents a focal length of the second lens;
f represents a focal length of the camera optical lens;
R3 represents a curvature radius of the object side surface of the second lens;
R4 represents a curvature radius of the image side surface of the second lens;
d3 represents an on-axis thickness of the second lens; and
TTL represents a total track length of the camera optical lens.
7 . The camera optical lens according to claim 1 , wherein an object side surface of the third lens is convex in a paraxial region, and an image side surface of the third lens is convex in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
0.57
≤
f
3
/
f
≤
1.79
;
0.11
≤
(
R
5
+
R
6
)
/
(
R
5
-
R
6
)
≤
0.37
;
and
0.06
≤
d
5
/
TTL
≤
0.18
;
wherein
f3 represents a focal length of the third lens;
f represents a focal length of the camera optical lens;
R5 represents a curvature radius of the object side surface of the third lens;
R6 represents a curvature radius of an image side surface of the third lens; and
TTL represents a total track length of the camera optical lens.
8 . The camera optical lens according to claim 1 , wherein the object side surface of the fourth lens is convex in a paraxial region, and the image side surface of the fourth lens is concave in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
-
9.47
≤
f
4
/
f
≤
-
2.92
;
and
0.03
≤
d
7
/
TTL
≤
0.09
;
wherein
f4 represents a focal length of the fourth lens;
f represents a focal length of the camera optical lens; and
TTL represents a total track length of the camera optical lens.
9 . The camera optical lens according to claim 1 , wherein an object side surface of the fifth lens is concave in a paraxial region, and an image side surface of the fifth lens is convex in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
0.29
≤
f
5
/
f
≤
0.89
;
0.83
≤
(
R
9
+
R
10
)
/
(
R
9
-
R
10
)
≤
2.6
;
and
0.09
≤
d
9
/
TTL
≤
0.26
;
wherein
f5 represents a focal length of the fifth lens;
f represents a focal length of the camera optical lens;
R9 represents a curvature radius of the object side surface of the fifth lens;
R10 represents a curvature radius of the image side surface of the fifth lens; and
TTL represents a total track length of the camera optical lens.
10 . The camera optical lens according to claim 1 , wherein an object side surface of the sixth lens is convex in a paraxial region, and an image side surface of the sixth lens is concave in the paraxial region;
wherein the camera optical lens further satisfies the following conditions:
-
1.44
≤
f
6
/
f
≤
-
0.48
;
0.89
≤
(
R
11
+
R
12
)
/
(
R
11
-
R
12
)
≤
2.74
;
and
0.04
≤
d
11
/
TTL
≤
0.13
;
wherein
f6 represents a focal length of the sixth lens;
f represents a focal length of the camera optical lens;
R11 represents a curvature radius of the object side surface of the sixth lens;
R12 represents a curvature radius of the image side surface of the sixth lens;
d11 represents an on-axis thickness of the sixth lens; and
TTL represents a total track length of the camera optical lens.