US 11,747,592 B2
Camera optical lens
Jia Chen, Shenzhen (CN); and Wen Sun, Shenzhen (CN)
Assigned to AAC Optics (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Optics (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Dec. 25, 2020, as Appl. No. 17/134,207.
Claims priority of application No. 202010804039.4 (CN), filed on Aug. 12, 2020.
Prior Publication US 2022/0050264 A1, Feb. 17, 2022
Int. Cl. G02B 9/60 (2006.01); G02B 13/18 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 13/18 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A camera optical lens, comprising, from an object side to an image side:
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 negative refractive power; and
a fifth lens,
wherein at least one of the first lens to the fifth lens has a free-form surface,
wherein the camera optical lens satisfies following conditions:
−3.50≤f4/f≤−0.35;
−8.0≤R10/f≤−1.00;
2.00≤d8/d7≤8.0;
0.52≤(R7+R8)/(R7−R8)≤6.56; and
0.02≤d7/TTL≤0.10,
where
f denotes a focal length of the camera optical lens;
f4 denotes a focal length of the fourth lens;
R10 denotes a central curvature radius of an image side surface of the fifth lens;
d7 denotes an on-axis thickness of the fourth lens;
d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens;
R7 denotes a central curvature radius of an object side surface of the fourth lens;
R7 denotes a central curvature radius of the image side surface of the fourth lens; and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.