Camera optical lens

A camera optical lens, comprising five lenses, the five lenses are, 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;
• and
• a fifth lens having a negative refractive power;
• wherein, the camera optical lens satisfies the following conditions:
• 12.50≤f3/f≤20.00;
• 0.30≤(R3+R4)/(R3−R4)≤1.00;
• and
• 0.30≤d5/d6≤0.50;
• where,
• f denotes a focus length of the camera optical lens;
• f3 denotes a focus length of the third lens;
• R3 denotes a central curvature radius of an object side surface of the second lens;
• R4 denotes a central curvature radius of an image side surface of the second lens;
• d5 denotes an on-axis thickness of the third lens;
• and
• d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens.