Camera lens

1. A camera lens comprising, in an order from an object side to an image side: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, and a fourth lens with a negative refractive power, a fifth lens with a positive refractive power and a sixth lens with a negative refractive power; wherein the camera lens further satisfies the following conditions (1)˜(4):

−9.00≤ f 1/ f≤− 2.20  (1)

4.00≤ f 2/ f≤ 16.00  (2)

0.80≤( R 1+ R 2)/( R 1− R 2)≤4.00  (3)

−2.00≤( R 7+ R 8)/( R 7− R 8)≤−0.50  (4)

where,

f: focal length of the whole camera lens;

f1: focal length of the first lens;

f2: focal length of the second lens;

R1: curvature radius of the object side surface of the first lens;

R2: curvature radius of the image side surface of the first lens;

R7: curvature radius of the object side surface of the fourth lens;

R8: curvature radius of the image side surface of the fourth lens.

2. The camera lens as described in claim 1 further satisfying the following conditions (5)˜(6):

0.50≤ f 3/ f≤ 1.50  (5)

0.30≤( R 5+ R 6)/( R 5− R 6)≤1.00  (6)

where,

f: focal length of the whole camera lens;

f3: focal length of the third lens;

R5: curvature radius of the object side surface of the third lens;

R6: The curvature radius of the image side surface of the third lens.

3. The camera lens as described in claim 1 further satisfies the following condition (7):

−2.00≤ f 4/ f≤− 0.80  (7)

where,

f: focal length of the whole camera lens;

f4: focal length of the fourth lens.

4. The camera lens as described in claim 1 further satisfying the following condition (8):

0.40≤ f 5/ f≤ 1.00  (8)

where,

f: focal length of the whole camera lens;

f5: focal length of the fifth lens.

5. The camera lens as described in claim 1 further satisfying the following condition (9):

−2.00≤ f 6/ f≤− 0.60  (9)

where,

f: focal length of the whole camera lens;

f6: focal length of the sixth lens.