Patent ID: 11874445
Assignee: CHANGZHOU RAYTECH OPTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera optical lens comprising eight lenses which are, 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 negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive refractive power, a sixth lens having a refractive power, a seventh lens having a negative refractive power and an eighth lens having a negative refractive power;
wherein the camera optical lens satisfies following conditions:

0.95≤f/TTL; 

−5.00≤f2/f≤−2.00; and

0.40≤(R9+R10)/(R9−R10)≤1.00;

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;
R9 denotes a central curvature radius of an object-side surface of the fifth lens; and
R10 denotes a central curvature radius of an image-side surface of the fifth lens.