Patent ID: 11947078
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 having positive refractive power;
a second lens having negative refractive power;
a third lens;
a fourth lens having positive refractive power;
a fifth lens having positive refractive power;
a sixth lens;
a seventh lens having negative refractive power;
an eighth lens having positive refractive power; and
a ninth lens having negative refractive power,
wherein the camera optical lens satisfies the following conditions:

0.90≤f1/f≤2.00;

0.50≤f5/f≤7.50;

−4.09≤(R11+R12)/(R11−R12)≤−0.51; and

2.50≤d13/d14≤12.00,

where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
f5 denotes a focal length of the fifth lens,
R11 denotes a central curvature radius of an object side surface of the sixth lens,
R12 denotes a central curvature radius of an image side surface of the sixth lens,
d13 denotes an on-axis thickness of the seventh lens, and
d14 denotes an on-axis distance from an image side surface of the seventh lens to an object side surface of the eighth lens.