Camera lens
A camera lens is disclosed. The camera lens comprises, from an object side to an image side, a first lens with positive refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with negative refractive power; a fifth lens with positive refractive power; and a sixth lens with negative refractive power. The camera lens satisfies specified conditions.
1. A camera lens, comprising in order from an object side to an image side:
a first lens with positive refractive power;
a second lens with negative refractive power;
a third lens with positive refractive power;
a fourth lens with negative refractive power;
a fifth lens with positive refractive power; and
a sixth lens with negative refractive power; wherein
the camera lens satisfies the following conditions (1)˜(3):
1.80 ≦f 3/ f≦ 5.00 (1);
0.15 ≦R 1/ R 2≦0.30 (2);
18.00 ≦R 5/ R 6 (3);
where,
f: overall focal distance of the camera lens;
f 3 : focal distance of the third lens;
R 1 : curvature radius of the first lens' object side surface;
R 2 : curvature radius of the first lens' image side surface;
R 5 : curvature radius of the third lens' object side surface;
R 6 : curvature radius of the third lens' image side surface.
2. The camera lens as described in claim 1 further satisfying the following condition (4):
0.75 ≦f 1/ f≦ 1.00 (4);
where,
f: overall focal distance of the camera lens;
f 3 : focal distance of the first lens.
3. The camera lens as described in claim 2 further satisfying the following condition (5):
1.00 ≦R 3/ R 4≦3.00 (5)
where,
R 3 : curvature radius of the second lens' object side surface;
R 4 : curvature radius of the second lens' image side surface.