Patent ID: 11914221
Assignee: AAC OPTICS (SUZHOU) CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. 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:

−3.50≤f2/f1≤−1.80;

1.00≤(R7+R8)/(R7−R8)≤1.75;

1.30≤d6/d4≤2.00;

5.00≤(R5+R6)/(R5−R6)≤20.00;

−5.00≤R9/R10≤−1.50; and

FNO≤2.05;

where
f1 denotes a focal length of the first lens;
f2 denotes a focal length 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;
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;
R9 denotes a curvature radius of an object-side surface of the fifth lens;
R10 denotes a curvature radius of an image-side surface of the fifth lens;
d4 denotes an on-axis distance from an image-side surface of the second lens to the object-side surface of the third lens;
d6 denotes an on-axis distance from the image-side surface of the third lens to the object-side surface of the fourth lens; and
FNO denotes an F number of the camera optical lens.