Patent ID: 11886042
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The camera optical lens according to claim 1, wherein the camera optical lens further satisfies conditions of:

−3.19≤f4/f≤−0.89;

1.29≤(R7+R8)/(R7−R8)≤5.02; and

0.02≤d7/TTL≤0.06;

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; and
d7 denotes an on-axis thickness of the fourth lens.