Patent ID: 11947075
Assignee: CHANGZHOU RAYTECH OPTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The camera optical lens as described in claim 1, wherein the camera optical lens satisfies following conditions:

−45.74≤f4/f≤5804.23;

−349.82≤(R7+R8)/(R7−R8)≤3.85; and

0.07≤d7/TTL≤0.22,

where
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; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.