US 12,153,198 B2
Optical imaging system
Hag Chul Kim, 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 Nov. 17, 2023, as Appl. No. 18/513,022.
Application 18/513,022 is a continuation of application No. 17/969,000, filed on Oct. 19, 2022, granted, now 11,852,789.
Application 17/969,000 is a continuation of application No. 16/913,559, filed on Jun. 26, 2020, granted, now 11,506,871, issued on Nov. 22, 2022.
Application 16/913,559 is a continuation of application No. 15/585,646, filed on May 3, 2017, granted, now 10,732,384, issued on Aug. 4, 2020.
Claims priority of application No. 10-2016-0176315 (KR), filed on Dec. 22, 2016.
Prior Publication US 2024/0085674 A1, Mar. 14, 2024
Int. Cl. G02B 13/00 (2006.01)
CPC G02B 13/0045 (2013.01) 14 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens having a positive refractive power;
a second lens having a positive refractive power;
a third lens having a negative refractive power, a concave object-side surface in a paraxial region thereof, and a concave image-side surface in a paraxial region thereof;
a fourth lens having a positive refractive power, a concave object-side surface in a paraxial region thereof, and a convex image-side surface in a paraxial region thereof; and
a fifth lens having a refractive power,
wherein the first to fifth lenses are sequentially disposed in ascending 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
−7.0<R1/f<5.0 is satisfied, where R1 is a radius of curvature of an object-side surface of the first lens at the optical axis, and f is an overall focal length of the optical imaging system.