Camera lens
A camera lens is disclosed. The camera lens includes five piece ultra-thin and wide angle lenses with excellent optical properties and with chromatic aberration sufficiently corrected 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 sequentially from the object side. The camera lens is characterized in that it meets 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)˜(5):
0.40≦ f 1/ f≦ 0.60 (1);
2.50≦ f 3/ f≦ 5.50 (2);
−1.35≦( R 1+ R 2)/( R 1− R 2)≦−0.75 (3);
−5.00≦( R 5+ R 6)/( R 5− R 6)≦−1.70 (4);
0.10≦ d 5/ f≦ 0.25 (5); where,
f: overall focal distance of the camera lens;
f1: focal distance of the first 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;
R5: curvature radius of the third lens' object side surface;
R6: curvature radius of the third lens' image side surface;
d5: axial distance from the image side surface of the second lens to the object side surface of the third lens.
2. The camera lens as described in claim 1 further satisfying the following conditions (6)˜(7):
−1.00≦ f 2/ f≦− 0.50 (6);
0.05≦( R 3+ R 4)/( R 3− R 4)≦1.80 (7);
where,
f: overall focal distance of the camera lens;
f2: focal distance of the second lens;
R3: curvature radius of the second lens' object side surface;
R4: curvature radius of the second lens' image side surface.