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

Claim 5:
6. The camera optical lens according to claim 1 further satisfying the following conditions:

−4.874≤f4/f≤−1.12;

0.54≤(R7+R8)/(R7−R8)≤4.49; and

0.02≤d7/TTL≤0.06;

where
f denotes a focal length of the camera optical lens;
f4 denotes a focal length of the fourth lens;
R7 denotes a central curvature radius of an object-side surface of the fourth lens;
R8 denotes a central curvature radius of an image-side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens.