US 12,000,986 B2
Camera optical lens
Chenxiyang Chen, Shenzhen (CN); and Wen Sun, Shenzhen (CN)
Assigned to Raytech Optical (Changzhou) Co., Ltd., Changzhou (CN)
Filed by Raytech Optical (Changzhou) Co., Ltd, Changzhou (CN)
Filed on Dec. 30, 2020, as Appl. No. 17/138,773.
Claims priority of application No. 202010991742.0 (CN), filed on Sep. 21, 2020.
Prior Publication US 2022/0091391 A1, Mar. 24, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/60 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/60 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A camera optical lens, comprising five lenses, the five lenses 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 positive refractive power;
a fourth lens having a positive refractive power; and
a fifth lens having a negative refractive power;
wherein an image side surface of the first lens is concave in the paraxial region, an object side surface of the second lens is concave in a paraxial region;
wherein, the camera optical lens satisfies the following conditions:
0.8≤f1/f≤0.90,
12.50≤f3/f≤20.00;
0.30≤(R3+R4)/(R3−R4)≤1.00; and
0.30≤d5/d6≤0.50;
where,
f denotes a focus length of the camera optical lens;
f1 denotes a focus length of the first lens;
f3 denotes a focus length of the third lens;
R3 denotes a central curvature radius of an object side surface of the second lens;
R4 denotes a central curvature radius of an image side surface of the second lens;
d5 denotes an on-axis thickness of the third lens; and
d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens.