Patent ID: 11947188
Assignee: AAC OPTICS (CHANGZHOU) CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera optical lens, comprising, from an object side to an image side:
a first lens having a negative refractive power;
a second lens having a positive refractive power;
a third lens;
a fourth lens;
a fifth lens;
a sixth lens;
a seventh lens; and
an eighth lens,
wherein at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, or the eighth lens has a free-form surface, an object-side surface of the second lens is convex at a paraxial position, and an image-side surface of the eighth lens is concave at the paraxial position;
wherein the camera optical lens satisfies the following conditions:

−8.06≤f5/f≤−1.80;

0.21≤(R9+R10)/(R9−R10)≤6.13;

0.02≤d9/TTL≤0.06, and

2.90≤d11/d12≤12.00,

where f denotes a focal length of the camera optical lens, f5 denotes a focal length of the fifth lens, R9 denotes a curvature radius of an object-side surface of the fifth lens, R10 denotes a curvature radius of an image-side surface of the fifth lens, d9 denotes an on-axis thickness of the fifth lens, d11 denotes an on-axis thickness of the sixth lens, d12 denots an on-axis distance from an image-side surface of the sixth lens to an object-side surface of the seventh 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.