US 11,698,511 B2
Camera optical lens
Jia Chen, Shenzhen (CN); and Wen Sun, Shenzhen (CN)
Assigned to AAC Optics Solutions Pte. Ltd., Singapore (SG)
Filed by AAC Optics Solutions Pte. Ltd., Singapore (SG)
Filed on Sep. 1, 2020, as Appl. No. 17/8,682.
Claims priority of application No. 202010623405.6 (CN), filed on Jul. 2, 2020.
Prior Publication US 2022/0003963 A1, Jan. 6, 2022
Int. Cl. G02B 9/64 (2006.01); G02B 13/18 (2006.01)
CPC G02B 9/64 (2013.01) [G02B 13/18 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A camera optical lens, comprising, sequentially from an object side to an image side:
a first lens having a negative refractive power;
a second lens having a refractive power;
a third lens having a positive refractive power;
a fourth lens having a negative refractive power;
a fifth lens having a refractive power;
a sixth lens having a positive refractive power; and
a seventh lens having a negative refractive power,
wherein at least one of the first to seventh lenses comprises a free-form surface, and the camera optical lens satisfies following conditions:
−3.00≤f4/f3≤−1.00;
2.90≤d9/d10≤8.50; and
2.00≤d11/d12≤15.00,
−0.20≤(R5+R6)/(R5−R6)≤0.28;
where
f3 denotes a focal length of the third lens;
f4 denotes a focal length of the fourth lens;
d9 denotes an on-axis thickness of the fifth lens;
d10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens;
d11 denotes an on-axis thickness of the sixth lens; and
d12 denotes an on-axis distance from an image side surface of the sixth lens to an object side surface of the seventh lens;
R5 denotes a curvature radius of an object side surface of the third lens;
R6 denotes a curvature radius of an image side surface of the third lens.