Patent ID: 11947189
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 with a negative refractive power;
a second lens with a positive refractive power;
a third lens with a negative 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:

−1.80≤f1/f≤−0.50; 3.00≤d9/d10≤15.00; 0.62≤(R1+R2)/(R1−R2)≤5.26; 0.02≤d1/TTL≤0.07;

where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
d9 denotes an on-axis thickness of the fifth lens;
d10 denotes an on-axis distance from an image-side surface of the fifth lens to an object-side surface of the sixth 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 track length of the camera optical lens.