Camera lens

1. A camera lens comprising, in an order from an object side to an image side:

a first lens with a positive refractive power;

a second lens with a negative refractive power;

a third lens with a positive refractive power; wherein

the camera lens further satisfies the following conditions (1)˜(3):

0.7< f 1/ f< 0.9  (1);

−5< f 2/ f<− 2.5  (2);

1.6< f 3/ f< 5.8  (3);

where,

f is the total focal length of the camera lens;

f1 is the focal length of the first lens;

f2 is the focal length of the second lens;

f3 is the focal length of the third lens;

wherein the image surface is formed by a plurality of sub-image surfaces not in the same plane and symmetrical about the optical axis.

2. The camera lens as described in claim 1 further satisfying the following conditions (1a)˜(3a):

2.0 mm< f 1<3.0 mm  (1a);

−10 mm< f 2<−8.5 mm  (2a);

8.5 mm< f 3<15 mm  (3a).

3. The camera lens as described in claim 1 further satisfying the following conditions (1b)˜(3b):

1.50< n 1<1.55  (1b);

1.60< n 2<1.70  (2b);

1.50< n 3<1.55  (3b);

where,

n1 is the refractive power of the first lens;

n2 is the refractive power of the second lens;

n3 is the refractive power of the third lens.

4. The camera lens as described in claim 1 further satisfying the following conditions (1c)˜(3c):

40< v 1<60  (1c);

15< v 2<30  (2c);

40< v 3<60  (3c);

where,

v1 is the Abbe number of the first lens;

v2 is the Abbe number of the second lens;

v3 is the Abbe number of the third lens.

5. The camera lens as described in claim 1 , wherein the first lens has a focal length satisfying the condition: 2.0 mm<f1<3.0 mm.

6. The camera lens as described in claim 1 , wherein the second lens satisfies the following conditions:

1.60< n 2<1.70;

15< v 2<30;

where,

n2 is the refractive power of the second lens;

v2 is the Abbe number of the second lens.

7. The camera lens as described in claim 1 , wherein a ratio between the focal length of the camera lens and total optical length satisfies the following formula:

f/TTL> 0.75;

where,

f is the total focal length of the camera lens;

TTL is the axial distance between the object side surface of the first lens and image surface.

8. The camera lens as described in claim 1 further satisfying the following condition FNo<2.5, where, FNo is the ratio between the focal length of the camera lens as a whole and the incident pupil diameter.

9. The camera lens as described in claim 1 further including an aperture stop located between the first lens and the second lens.

10. The camera lens as described in claim 1 , wherein the distances along directions parallel to the optical axis from the sub-image surfaces to center of the image surface increase from the center to outside.