Patent ID: 11914107
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

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

−323.37≤f4/f≤140.20;

−66.38≤(R7+R8)/(R7−R8)≤61.43; and

0.03≤d7/TTL≤0.10,

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.