Patent ID: 11874444
Assignee: CHANGZHOU RAYTECH OPTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The camera optical lens according to claim 1 further satisfying the following conditions:

1.81≤f2/f≤19.46;

0.22≤(R3+R4)/(R3−R4)≤3.37; and

0.05≤d3/TTL≤0.19;

where
f denotes a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
R3 denotes a central curvature radius of an object-side surface of the second lens;
R4 denotes a central curvature radius of an image-side surface of the second lens;
d3 denotes an on-axis thickness of the second lens.