Camera optical lens

A camera optical lens comprising five-piece lenses, from an object side to an image side, the five-piece lenses are:

• a first lens having a positive refractive power;
• a second lens having a negative refractive power;
• a third lens having a negative refractive power;
• a fourth lens having a positive refractive power;
• and
• a fifth lens having a negative refractive power;
• wherein the camera optical lens satisfies following conditions:
• 0.65≤f1/f≤0.85;
• 1.20≤(R7+R8)/(R7−R8)≤1.75;
• −40.00≤f3/f≤−20.00;
• 0.50≤d5/d6≤0.80;
• and
• 1.00≤d8/d9≤1.30;
• where
• f denotes a focal length of the camera optical lens;
• f1 denotes a focal length of the first lens;
• f3 denotes a focal length of the third lens;
• R7 denotes a curvature radius of an object-side surface of the fourth lens;
• R8 denotes a curvature radius of an image-side surface of the fourth lens;
• d5 denotes an on-axis thickness of the third lens;
• d6 denotes an on-axis distance from an image-side surface of the third lens to the object-side surface of the fourth lens;
• d8 denotes an on-axis distance from the image-side surface of the fourth lens to an object-side surface of the fifth lens;
• and
• d9 denotes an on-axis thickness of the fifth lens.