Camera lens

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

a first lens having a negative refractive power, an image-side surface of the first lens being configured as a concave surface;

a second lens having a positive refractive power, an object-side surface of the second lens being configured as a convex surface, and an image-side surface of the second lens being configured as a convex surface;

a third lens having a negative refractive power, an image-side surface of the third lens being configured as a concave surface;

a fourth lens having a refractive power;

a fifth lens having a positive refractive power, an image-side surface of the fifth lens being configured as a convex surface;

a sixth lens having a negative refractive power, an image-side surface of the sixth lens being configured as a concave surface;

wherein the camera lens satisfies a following relational expression: 2<tan(HFOV)<9,

in which HFOV denotes a half of a largest field angle of the camera lens,

wherein the camera lens satisfies a following relational expression: |SAG62/DT62|<0.2, in which SAG62 denotes an axial distance from an intersection point of the image-side surface of the sixth lens with an optical axis to a vertex of an effective radius of the image-side surface of the sixth lens; DT62 denotes the effective radius of the image-side surface of the sixth lens.

2. The camera lens according to claim 1 , wherein the camera lens satisfies a following relational expression: 1<f5/f<2.5, in which f5 denotes an effective focal length of the fifth lens; f denotes an effective focal length of the camera lens.

3. The camera lens according to claim 1 , wherein the camera lens satisfies a following relational expression: −2<f1/f2<0, in which f1 denotes an effective focal length of the first lens; f2 denotes an effective focal length of the second lens.

4. The camera lens according to claim 1 , wherein the camera lens satisfies a following relational expression: T23/T12<0.2, in which T23 denotes an axial spacing distance between the second lens and the third lens; T12 denotes an axial spacing distance between the first lens and the second lens.

5. The camera lens according to claim 1 , wherein the camera lens satisfies a following relational expression: 0.5<R2/R3<1.5, in which R2 denotes a radius of curvature of the image-side surface of the first lens; R3 denotes a radius of curvature of the object-side surface of the second lens.

6. The camera lens according to claim 1 , wherein the camera lens satisfies a following relational expression: 0<Dr5r8/TTL<0.5, in which Dr5r8 denotes an axial distance from an object-side surface of the third lens to an image-side surface of the fourth lens; TTL denotes an axial distance from an object-side surface of the first lens to an imaging surface.

7. The camera lens according to claim I, wherein the camera lens satisfies a following relational expression: 1<DT12/1DT21<2, in which DT12 denotes an effective radius of the image-side surface of the first lens; DT21 denotes an effective radius of the object-side surface of the second lens.

8. The camera lens according to claim I, wherein the camera lens satisfies a following relational expression: −2<f6/f<−0.8, in which f6 denotes an effective focal length of the sixth lens; f denotes an effective focal length of the camera lens.

9. The camera lens according to claim 1 , wherein an object-side surface of the third lens is configured as a convex surface, an object-side surface of the fourth lens is configured as a convex surface, and an image-side surface of the fourth lens is configured as a convex surface.