Patent ID: 11867881
Assignee: RAYTECH OPTICAL (CHANGZHOU) 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 positive refractive power;
a third lens having positive refractive power;
a fourth lens having positive refractive power;
a fifth lens having negative 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:

3.50≤f1/f≤5.00; and

2.50≤d3/d4≤10.00,

where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first 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.