Patent ID: 11914223
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:

0.55≤f4/f≤2.70;

−0.06≤(R7+R8)/(R7−R8)≤1.47; and

0.04≤d7/TTL≤0.19;

where f denotes a focal length of the camera optical lens, 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 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.