US 11,668,905 B2
Optical imaging system
Ju Hwa Son, Suwon-si (KR); Min Hyuk Im, Suwon-si (KR); Ga Young An, 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 Apr. 22, 2022, as Appl. No. 17/726,717.
Application 17/726,717 is a continuation of application No. 16/438,974, filed on Jun. 12, 2019, granted, now 11,340,424.
Claims priority of application No. 10-2018-0073614 (KR), filed on Jun. 26, 2018; and application No. 10-2019-0011429 (KR), filed on Jan. 29, 2019.
Prior Publication US 2022/0252832 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 9/64 (2006.01); G02B 27/00 (2006.01); G02B 7/02 (2021.01)
CPC G02B 9/64 (2013.01) [G02B 7/02 (2013.01); G02B 27/0025 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens having positive refractive power and a concave image-side surface;
a second lens having negative refractive power and a concave image-side surface;
a third lens having a refractive power;
a fourth lens having a refractive power;
a fifth lens having positive refractive power;
a sixth lens having a refractive power;
a seventh lens having a refractive power; and
an eighth lens having a refractive power,
wherein the first to eighth lenses are sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, and
wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens.