US 11,885,935 B2
Camera optical lens
Jia Chen, Shenzhen (CN)
Assigned to Raytech Optical (Changzhou) Co., Ltd., Changhou (CN)
Filed by Raytech Optical (Changzhou) Co., Ltd, Changzhou (CN)
Filed on Dec. 30, 2020, as Appl. No. 17/137,416.
Claims priority of application No. 202011199773.9 (CN), filed on Nov. 2, 2020.
Prior Publication US 2022/0137351 A1, May 5, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 10 Claims
OG exemplary drawing
 
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 having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power; wherein the camera optical lens satisfies the conditions of:
0.95≤f/TTL;
2.00≤f2/f≤5.00; and
2.50≤(R15+R16)/(R15−R16)≤15.00;
where
f denoted a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
R15 denotes a central curvature radius of an object-side surface of the eighth lens;
R16 denotes a central curvature radius of an image-side surface of the eighth lens; and
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.