Patent ID: 11885933
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 a positive refractive power;
a second lens having positive refractive power;
a third lenses having negative refractive power;
a fourth lens having positive refractive power;
a fifth lens;
a sixth lens;
a seventh lens having positive refractive power;
an eighth lens; and
a ninth lens having negative retractive power,
wherein the camera optical lens satisfies following conditions:

3.50≤f1/f≤6.00;

−13.67≤(R13+R14)/(R13−R14)≤−2.42;

0.02≤d13/TTL≤0.08; and

1.50≤d15/d16≤9.00,

where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
R13 denotes a central curvature radius of an object side surface of the seventh lens,
R14 denotes a central curvature radius of an image side surface of thy seventh lens,
d13 denotes an on-axis thickness of the seventh lens,
d15 denotes an on-axis thickness of the eighth lens,
d16 denotes an on-axis distance from an image side surface of the eighth lens to an object side surface of the ninth lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.