Camera lens

A camera lens comprising, from the object side to the image side:

• a first lens with positive refractive power, whose object side surface and image side surface are both aspheric surfaces;
• an aperture;
• a second lens with positive refractive power, whose object side surface and image side surface are both aspheric surfaces;
• a third lens with negative refractive power, whose object side surface and image side surface are both aspheric surfaces;
• wherein the object side surface of the first lens is convex and the image side surface is concave, the camera lens satisfies the following conditions:
• 0.6<f/f1<1.0 (1);
• −1.6<(R1+R2)/(R1−R2)<−1.2 (2);
• 0.15<d1/f<0.2 (3);
• −1.5<f/f3<−1 (4);
• 1.3<(R5+R6)/(R5−R6)<2.1 (5);
• 1.0<f/f2<2.0 (6);
• 2.2<(R3+R4)/(R3−R4)<2.8 (7);
• where,
• f is the focal distance of the camera lens;
• f1 is the focal distance of the first lens;
• f2 is the focal distance of the second lens;
• R1 is the object side curvature radius of the first lens;
• R2 is the image side curvature radius of the first lens;
• d1 is the center thickness of the first lens;
• f3 is the focal distance of the third lens;
• R3 is the object side curvature radius of the second lens;
• R4 is the image side curvature radius of the second lens;
• R5 is the object side curvature radius of the third lens;
• R6 is the image side curvature radius of the third lens.