Camera optical lens

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

• a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens;
• wherein the first lens has a negative refractive power, the second lens has a positive refractive power, the third lens has a negative refractive power, the fourth lens has a negative refractive power, the fifth lens has a positive refractive power, the sixth lens has a negative refractive power, the seventh lens has a negative refractive power;
• the camera optical lens satisfies the following conditions:
• −10≤f1/f≤−3.1;
• 1.7≤n3≤2.2;
• 1.7≤n6≤2.2;
• 1≤f6/f7≤10;
• 2≤(R1+R2)/(R1−R2)≤10;
• where
• f:
• a focal length of the optical camera lens;
• f1:
• a focal length of the first lens;
• f6:
• a focal length of the sixth lens;
• f7:
• a focal length of the seventh lens;
• n3:
• a refractive index of the third lens;
• n6:
• a refractive index of the sixth lens;
• R1:
• a curvature radius of object side surface of the first lens;
• R2:
• a curvature radius of image side surface of the first lens.