Patent ID: 11874441
Assignee: CHANGZHOU RAYTECH OPTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera optical lens, comprising, from an object side to an image side:
a first lens;
a second lens having a negative refractive power;
a third lens;
a fourth lens;
a fifth lens having a positive refractive power;
a sixth lens;
a seventh lens;
an eighth lens; and
a ninth lens,
wherein the camera optical lens satisfies following conditions:

0.80≤f1/f≤1.80;

−8.00≤R17/R18≤−1.50; and

1.50≤d3/d4≤8.00,

where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
R17 denotes a central curvature radius of an object side surface of the ninth lens,
R18 denotes a central curvature radius of an object side surface of the ninth lens,
d3 denotes an on-axis thickness of the second lens, and
d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens.