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 positive refractive power;
• a fourth lens having negative refractive power;
• a fifth lens having positive refractive power;
• and
• a sixth lens having negative refractive power,
• wherein a total number of lenses in the camera optical lens is 6,
• wherein the camera optical lens satisfies:
• 6.50≤f3/f≤10.00;
• 1.50≤(R3+R4)/(R3−R4)≤3.00;
• −0.45≤(R9+R10)/(R9−R10)≤−0.14;
• 8.00≤d1/d2≤10.50;
• and
• 1.50≤d8/d7≤2.00,
• where
• f denotes a focal length of the camera optical 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,
• R9 denotes a curvature radius of the object side surface of the fifth lens,
• R10 denotes a curvature radius of an image side surface of the fifth lens,
• d1 denotes an on-axis thickness of the first lens,
• d2 denotes an on-axis distance from an image side surface of the first lens to the object side surface of the second 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.