US 11,852,789 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 Oct. 19, 2022, as Appl. No. 17/969,000.
Application 17/969,000 is a continuation of application No. 16/913,559, filed on Jun. 26, 2020, granted, now 11,506,871.
Application 16/913,559 is a continuation of application No. 15/585,646, filed on May 3, 2017, granted, now 10,732,384.
Claims priority of application No. 10-2016-0176315 (KR), filed on Dec. 22, 2016.
Prior Publication US 2023/0038556 A1, Feb. 9, 2023
Int. Cl. G02B 13/00 (2006.01)
CPC G02B 13/0045 (2013.01) 12 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 convex object-side surface in a paraxial region thereof, and a concave image-side surface in a paraxial region thereof;
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; and
a fifth lens having a negative refractive power, a convex object-side surface in a paraxial region thereof, and a concave image-side surface in a paraxial region thereof,
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
TTL/(2Y)<2.0 is satisfied, where TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging plane, and Y is one half of a diagonal length of the imaging plane.