US 11,947,078 B2
Camera optical lens
Tiantian Hu, Shenzhen (CN)
Assigned to Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed by Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed on Dec. 25, 2020, as Appl. No. 17/134,174.
Claims priority of application No. 202010931545.X (CN), filed on Sep. 8, 2020.
Prior Publication US 2022/0075146 A1, Mar. 10, 2022
Int. Cl. G02B 9/64 (2006.01); G02B 13/00 (2006.01); G02B 13/06 (2006.01); G02B 13/18 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/06 (2013.01); G02B 13/18 (2013.01)] 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;
a fourth lens having positive refractive power;
a fifth lens having positive refractive power;
a sixth lens;
a seventh lens having negative 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:
0.90≤f1/f≤2.00;
0.50≤f5/f≤7.50;
−4.09≤(R11+R12)/(R11−R12)≤−0.51; and
2.50≤d13/d14≤12.00,
where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
f5 denotes a focal length of the fifth lens,
R11 denotes a central curvature radius of an object side surface of the sixth lens,
R12 denotes a central curvature radius of an image side surface of the sixth 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.