Patent ID: 11966020
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The camera optical lens as described in claim 1, further satisfying following conditions:

1.21≤f4/f≤4.05;

−3.45≤(R7+R8)/(R7−R8)≤−0.93; and

0.05≤d7/TTL≤0.16,

where
f4 denotes a focal length of the fourth lens,
R7 denotes a central curvature radius of the 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.