Patent ID: 11947083
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

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

1.77≤f4/f≤6.73; 1.40≤(R7+R8)/(R7−R8)≤5.85; 0.02≤d7/TTL≤0.08;

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;
TTL denotes a total track length of the camera optical lens.