Camera optical lens

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

• a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a negative refractive power;
• wherein the first lens includes an image-side surface being concave in the paraxial region, the fourth lens includes an object-side surface being convex in a paraxial region and an image-side surface being concave in the paraxial region;
• wherein the camera optical lens satisfies the following conditions:
• 0.95≤f/TTL;
• f/IH≥2.25;
• −4.00≤f2/f≤−1.80;
• and
• 3.00≤(R13+R14)/(R13−R14)≤25.00;
• where
• TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis;
• IH denotes an image height of the camera optical lens;
• f denotes a focal length of the camera optical lens;
• f2 denotes a focal length of the second lens;
• R13 denotes a central curvature radius of an object-side surface of the seventh lens;
• and
• R14 denotes a central curvature radius of an image-side surface of the seventh lens.