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 camera optical lens further satisfies the following conditions:
• −10≤f1/f≤−3.1;
• 1.8≤f6/f7≤10;
• 1.7≤n3≤2.2;
• 1.7≤n4≤2.2;
• −10≤(R1+R2)/(R1−R2)≤0.8;
• where
• f:
• the focal length of the camera optical lens;
• f1:
• the focal length of the first lens;
• f6:
• the focal length of the sixth lens;
• f7:
• the focal length of the seventh lens;
• n3:
• the refractive power of the third lens;
• n4:
• the refractive power of the fourth lens;
• R1:
• the curvature radius of object side surface of the first lens;
• R2:
• the curvature radius of image side surface of the first lens.