US 11,867,883 B2
Camera optical lens
Tingting Yang, Shenzhen (CN)
Assigned to Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed by Changzhou Raytech Optronics Co., Ltd., Changzhou (CN)
Filed on Dec. 29, 2020, as Appl. No. 17/136,008.
Claims priority of application No. 202010991970.8 (CN), filed on Sep. 21, 2020.
Prior Publication US 2022/0091379 A1, Mar. 24, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A camera optical lens comprising six-piece lenses, from an object side to an image side, the six-piece lenses are:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a negative refractive power;
a fourth lens;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power;
wherein the camera optical lens satisfies following conditions:
0.65≤f1/f≤0.85;
3.00≤f3/f2≤8.00;
0.80≤d3/d4≤1.20;
0.85≤d8/d9≤1.35; and
−4.00≤R9/R10≤−2.00;
where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
f2 denotes a focal length of the second lens;
f3 denotes a focal length of the third lens;
d3 denotes an on-axis thickness of the second lens;
d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third 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;
d9 denotes an on-axis thickness of the fifth lens;
R9 denotes a curvature radius of the object-side surface of the fifth lens; and
R10 denotes a curvature radius of an image-side surface of the fifth lens.