Patent ID: 11966021
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 negative refractive power;
a fifth lens with a negative 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
an ninth lens with a negative refractive power;
wherein the camera optical lens satisfies the following conditions:

−4.50≤f1/f≤−2.00; 5.50≤d5/d6≤32.00; 0.44≤f3/f≤1.68; −1.03≤(R5+R6)/(R5−R6)≤−0.08; 0.04≤d5/TTL≤0.15;

where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
f3 denotes a focal length of the third lens;
R5 denotes a central curvature radius of an object-side surface of the third lens;
R6 denotes a central curvature radius of an image-side surface of the third 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;
TTL denotes a total track length of the camera optical lens.