Camera lens
A camera lens is disclosed. The camera lens includes five piece ultra-thin and high-luminous flux wide angle lenses with excellent optical properties as follows: 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 positive refractive power; a fifth lens with negative refractive power which are arranged in an order from an object side to an image side. The camera lens satisfies specified conditions.
1. A camera lens comprising, in an 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 positive refractive power;
a fifth lens with negative refractive power; wherein
the camera lens satisfies the following conditions (1)˜(6):
0.60≦ f 1/ f≦ 0.75 (1);
−1.40≦ f 2/ f≦− 1.25 (2);
5.20≦ f 3/ f≦ 20.00 (3);
−1.20≦( R 1+ R 2)/( R 1− R 2)≦−0.88 (4);
0.06≦( R 3+ R 4)/( R 3− R 4)≦0.50 (5);
0.19 ≦d 7/ f≦ 0.23 (6); where,
where,
f: overall focal distance of the camera lens;
f3: focal distance of the first lens;
f2: focal distance of the second lens;
f3: focal distance of the third lens;
R1: curvature radius of the first lens' object side surface;
R2: curvature radius of the first lens' image side surface;
R3: curvature radius of the second lens' object side surface;
R4: curvature radius of the second lens' image side surface;
d7: center thickness of the fourth lens.
2. The camera lens as described in claim 1 further satisfying the following condition (7):
0.50≦ f 4/ f≦ 0.72 (7);
where,
f: overall focal distance of the camera lens;
f4: focal distance of the fourth lens.
3. The camera lens as described in claim 1 further satisfying the following condition (8):
0.10≦ d 6/ f≦ 0.13 (8);
where,
f: overall focal distance of the camera lens;
d6: axial distance from the image side surface of the third lens to the objects side surface of the fourth lens.