US 12,242,136 B2
Optical imaging system
Jae Hyuk Huh, Suwon-si (KR); Jae Hyun Baik, Suwon-si (KR); and Yong Joo Jo, Suwon-si (KR)
Assigned to Samsung Electro-Mechanics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electro-Mechanics Co., Ltd., Suwon-si (KR)
Filed on Jan. 31, 2024, as Appl. No. 18/428,134.
Application 18/428,134 is a continuation of application No. 17/163,752, filed on Feb. 1, 2021, granted, now 11,921,353.
Application 17/163,752 is a continuation of application No. 16/136,567, filed on Sep. 20, 2018, granted, now 10,935,759, issued on Mar. 2, 2021.
Claims priority of application No. 10-2017-0148105 (KR), filed on Nov. 8, 2017; and application No. 10-2018-0025358 (KR), filed on Mar. 2, 2018.
Prior Publication US 2024/0168258 A1, May 23, 2024
Int. Cl. G02B 9/64 (2006.01); G02B 13/00 (2006.01); G02B 27/00 (2006.01); H04N 23/54 (2023.01)
CPC G02B 9/64 (2013.01) [G02B 13/0045 (2013.01); G02B 27/0037 (2013.01); H04N 23/54 (2023.01)] 12 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens having a positive refractive power, a convex object-side surface in a paraxial region thereof and a concave image-side surface in the paraxial region thereof;
a second lens having a refractive power, a convex object-side surface in a paraxial region thereof and a concave image-side surface in the paraxial region thereof;
a third lens having a positive refractive power;
a fourth lens having a refractive power;
a fifth lens having a refractive power and a convex object-side surface in a paraxial region thereof;
a sixth lens having a refractive power and a concave object-side surface in a paraxial region thereof;
a seventh lens having a positive refractive power, a convex object-side surface in a paraxial region thereof and a concave image-side surface in the paraxial region thereof; and
an eighth lens having a negative refractive power and a convex object-side surface in a paraxial region thereof,
wherein the first to eighth lenses are sequentially arranged from an object side of the optical imaging system,
wherein the optical imaging system has a total of eight lenses,
wherein −0.5<(|Ri|−|Rj|)/(|Ri|+|Rj|)<0.5 is satisfied, where Ri is a radius of curvature of the object-side surface of the seventh lens, and Rj is a radius of curvature of the image-side surface of the seventh lens.