Camera optical lens
An camera optical lens is disclosed. The camera optical lens includes, in sequence 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. A focal length of the first lens is f1, an Abbe number of the first lens is v1, a focal length of the second lens is f2, an Abbe number of the second lens is v2, a curvature radius of an object side of the second lens is R3, a curvature radius of an image side of the second lens is R4, an on-axis distance from an image side of the first lens to the object side of the second lens is d2, a total optical length of the camera optical lens is TTL, and the following conditions are satisfied: −15.0≤f2/f1≤−4.9, 25.0≤TTL/d2≤47.0, 3.0≤v1/v2≤7.0, and 6.0≤(R3+R4)/(R3−R4)≤20.0.
1. An camera optical lens, comprising, in sequence from an object side to an image side:
a first lens having positive refractive power,
a second lens having negative refractive power,
a third lens having positive refractive power,
a fourth lens having negative refractive power,
a fifth lens having positive refractive power, and
a sixth lens having negative refractive power;
a focal length of the first lens is f1, a focal length of the second lens is f2,
an on-axis distance from an image side of the first lens to an object side of the second lens is d2,
a total optical length from object side surface of the first lens to an image plane of the camera optical lens is TTL,
an Abbe number of the first lens is v1, an Abbe number of the second lens is v2,
a curvature radius of an object side of the second lens is R3, a curvature radius of an image side of the second lens is R4, and the following conditions are satisfied:
-
15.0
≤
f
2
/
f
1
≤
-
4.9
,
25.0
≤
TTL
/
d
2
≤
47.0
,
3.0
≤
v
1
/
v
2
≤
7.0
,
and
6.0
≤
(
R
3
+
R
4
)
/
(
R
3
-
R
4
)
≤
20.0
.
2. The camera optical lens according to claim 1 , wherein a curvature radius of an object side of the first lens is R1, a curvature radius of an image side of the first lens is R2, and the following conditions are satisfied:
−4.0≤( R 1+ R 2)/( R 1− R 2)≤−1.8.
3. The camera optical lens according to claim 1 , wherein an entire focal length f of the camera optical lens and the focal length f2 of the second lens satisfy the following conditions:
−0.2≤ f/f 2≤0.0.
4. The camera optical lens according to claim 1 , wherein a curvature radius R11 of an object side of the sixth lens and a curvature radius R12 of an image side of the sixth lens satisfy the following conditions:
0.1≤( R 11+ R 12)/( R 11− R 12)≤0.2.