US 11,867,881 B2
Camera optical lens
Jia Chen, Shenzhen (CN)
Assigned to Raytech Optical (Changzhou) Co., Ltd., Changzhou (CN)
Filed by Raytech Optical (Changzhou) Co., Ltd, Changzhou (CN)
Filed on Dec. 28, 2020, as Appl. No. 17/134,525.
Claims priority of application No. 202010938651.0 (CN), filed on Sep. 9, 2020.
Prior Publication US 2022/0075155 A1, Mar. 10, 2022
Int. Cl. G02B 9/64 (2006.01); G02B 13/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 11 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 positive refractive power;
a third lens having positive refractive power;
a fourth lens having positive refractive power;
a fifth lens having negative 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:
3.50≤f1/f≤5.00; and
2.50≤d3/d4≤10.00,
where
f denotes a focal length of the camera optical lens,
f1 denotes a focal length of the first lens,
d3 denotes an on-axis thickness of the second lens, and
d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens.