Patent ID: 11947085
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 positive refractive power;
a fourth lens with a positive refractive power;
a fifth lens with a positive refractive power;
a sixth lens with a negative refractive power;
a seventh lens with a negative refractive power;
an eighth lens with a positive refractive power; and
an ninth lens with a negative refractive power;
wherein the camera optical lens satisfies following conditions:

−1.90≤f1/f≤−0.70;1.50≤d5/d6≤8.00;−18.00≤f6/f≤−3.00;

where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
f6 denotes a focal length of the sixth lens;
d5 denotes an on-axis thickness of the third lens;
d6 denotes an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens.