US 11,796,770 B2
Camera optical lens
Guobing Tian, 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. 17/137,437.
Claims priority of application No. 202010989333.7 (CN), filed on Sep. 19, 2020.
Prior Publication US 2022/0091390 A1, Mar. 24, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01); G02B 27/0025 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A camera optical lens, with six lenses, 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 power;
a fourth lens having a negative refractive power,
a fifth lens having a positive power; and
a sixth lens having a negative refractive power;
wherein the camera optical lens satisfies the following conditions:
0.35≤f1/f≤0.68;
2.00≤(R3+R4)/(R3−R4)≤5.00;
1.50≤d5/d7≤3.00; and
2.00≤(R7+R8)/(R7−R8)≤15.00;
where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first 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;
d7 denotes an on-axis thickness of the fourth lens
R7 denotes a central curvature radius of an object-side surface of the fourth lens; and
R8 denotes a central curvature radius of an image-side surface of the fourth lens.