Patent ID: 11966027
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera optical lens, comprising nine lenses, the nine lenses from an object side to an image side being:
a first lens having a negative refractive power;
a second lens having a positive refractive power;
a third lens having a positive refractive power;
a fourth lens with a positive refractive power;
a fifth lens with a positive refractive power;
a sixth lens with a positive refractive power;
a seventh lens with a negative refractive power;
an eighth lens with a positive refractive power; and
a ninth lens with a negative refractive power;
wherein the camera optical lens satisfies following conditions:
−1.60≤f1/f≤−0.50; 0.25≤(R1+R2)/(R1−R2)≤0.97; 0.03≤d1/TTL≤0.14; 2.50≤d3/d4≤10.0;
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;
d3 denotes an on-axis thickness of the second lens;
d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third lens;
TTL denotes a total track length of the camera optical lens.