CPC G02B 13/0045 (2013.01) [G02B 9/60 (2013.01)] | 10 Claims |
1. 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 an image side surface of the first lens is concave in the paraxial region, an object side surface of the second lens is concave in a paraxial region;
wherein, the camera optical lens satisfies the following conditions:
0.8≤f1/f≤0.90,
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;
f1 denotes a focus length of the first 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.
|