Patent ID: 11960061
Assignee: AAC OPTICS (SUZHOU) CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. The camera optical lens according to claim 1, wherein an object-side surface of the fourth lens is concave in a paraxial region, an image-side surface of the fourth lens is convex in the paraxial region; and the camera optical lens further satisfies following conditions:

−28.03≤f4/f≤3.04;

−50.54≤(R7+R8)/(R7−R8)≤−6.91; and

0.01≤d7/TTL≤0.05;

where
f4 denotes a focal length of the fourth lens;
R7 denotes a curvature radius of the object-side surface of the fourth lens;
R8 denotes a curvature radius of the image-side surface of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens.