US 11,892,597 B2
Camera optical lens
Li Liu, Shenzhen (CN)
Assigned to Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed by Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed on Dec. 23, 2020, as Appl. No. 17/131,747.
Claims priority of application No. 202010916863.9 (CN), filed on Sep. 3, 2020.
Prior Publication US 2022/0066147 A1, Mar. 3, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01); G02B 13/06 (2006.01); H04N 23/55 (2023.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/06 (2013.01); H04N 23/55 (2023.01)] 10 Claims
OG exemplary drawing
 
1. A camera optical lens, comprising from an object side to an image side:
a first lens having positive refractive power;
a second lens having negative refractive power;
a third lens having positive refractive power;
a fourth lens having negative refractive power;
a fifth lens having positive refractive power;
a sixth lens having negative refractive power;
a seventh lens having positive refractive power;
an eighth lens having positive refractive power; and
a ninth lens having negative refractive power,
wherein the camera optical lens satisfies the following conditions:
2.20≤f1/f≤5.00;
(R7+R8)/(R7−R8)≤−1.90; and
3.00≤d13/d14≤15.00,
where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
R7 denotes a central curvature radius of an object side surface of the fourth lens;
R8 denotes a central curvature radius of an image side surface of the fourth lens
d13 denotes an on-axis thickness of the seventh lens; and
d14 denotes an on-axis distance from an image side surface of the seventh lens to an object side surface of the eighth lens.