Patent ID: 11966018
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 negative refractive power;
a fifth lens having positive refractive power;
a sixth lens;
a seventh lens having positive refractive power;
an eighth lens having negative refractive power; and
a ninth lens having negative refractive power;
wherein the camera optical lens satisfies:

2.00≤f1/f≤3.50;

−0.98≤(R1+R2)/(R1−R2)≤0.71

0.02≤d1/TTL≤0.07; and

2.00≤d5/d6≤9.00,

where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
R1 denotes a central curvature radius of an object side surface of the first lens,
R2 denotes a central curvature radius of an image side surface of the first lens,
d1 denotes an on-axis thickness of the first lens,
TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis,
d5 denotes an on-axis thickness of the third lens, and
d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens.