Patent ID: 11947081
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;
a sixth lens;
a seventh lens having a negative refractive power;
an eighth lens having a positive refractive power; and
a ninth lens,
wherein an image side surface of the eighth lens is a concave surface at the paraxial position, an object side surface of the ninth lens is a convex surface at the paraxial position,
wherein the camera optical lens satisfies following conditions:

0.60≤f1/f≤1.50;

−4.00≤f3/f≤−1.50; and, 2.50≤d7/d8≤12.00,
where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
f3 denotes a focal length of the third lens,
d7 denotes an on-axis thickness of the fourth lens, and
d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens.