Camera optical lens

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

• a first lens having positive refractive power;
• a second lens having negative refractive power;
• a third lens having negative refractive power;
• a fourth lens having positive refractive power;
• and
• a fifth lens having negative refractive power,
• wherein the camera optical lens satisfies following conditions:
• 0.70≤f1/f≤0.90;
• −35.00≤f3/f≤−10.00;
• 4.00≤R3/R4≤12.00;
• 3.00≤(R5+R6)/(R5−R6)≤20.00;
• and
• 2.00≤d7/d8≤4.50,
• 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;
• R3 denotes a curvature radius of an object side surface of the second lens;
• R4 denotes a curvature radius of an image side surface of the second lens;
• R5 denotes a curvature radius of an object side surface of the third lens;
• R6 denotes a curvature radius of an image side surface of the third lens;
• d7 denotes an on-axis thickness of the fourth lens;
• and
• d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens.