Patent ID: 11966019
Assignee: CHANGZHOU RAYTECH OPTRONICS 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 in sequence: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens and an eighth lens;
wherein the camera optical lens satisfies following conditions:

0.95≤f/TTL; 

−3.50≤f2/f≤−1.80; and

0.30≤(R5+R6)/(R5−R6)≤0.90;, where
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis;
f denotes a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
R5 denotes a central curvature radius of an object-side surface of the third lens; and
R6 denotes a central curvature radius of an image-side surface of the third lens.