US 12,228,798 B2
Optical imaging system
Phil Ho Jung, Suwon-si (KR); In Gun Kim, Suwon-si (KR); Yong Joo Jo, Suwon-si (KR); and Ga Young An, 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 Mar. 8, 2024, as Appl. No. 18/600,053.
Application 18/600,053 is a continuation of application No. 18/189,685, filed on Mar. 24, 2023, granted, now 11,960,145.
Application 18/189,685 is a continuation of application No. 17/099,021, filed on Nov. 16, 2020, granted, now 11,644,643, issued on May 9, 2023.
Application 17/099,021 is a continuation of application No. 16/424,535, filed on May 29, 2019, granted, now 11,002,943, issued on May 11, 2021.
Claims priority of application No. 10-2018-0061409 (KR), filed on May 29, 2018; and application No. 10-2018-0106170 (KR), filed on Sep. 5, 2018.
Prior Publication US 2024/0219689 A1, Jul. 4, 2024
Int. Cl. G02B 9/64 (2006.01); G02B 27/00 (2006.01); H04N 23/55 (2023.01)
CPC G02B 9/64 (2013.01) [G02B 27/0025 (2013.01); H04N 23/55 (2023.01)] 13 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 a paraxial region thereof;
a second 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;
a third 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;
a fourth lens having a positive refractive power;
a fifth lens having a negative refractive power;
a sixth lens having a positive refractive power; and
a seventh 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,
wherein the first to seventh lenses are sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side toward an imaging plane of an image sensor,
wherein the optical imaging system has a total of seven lenses, and
wherein the optical imaging system satisfies 0.01<R1/R4<1.3 and 0.05<R1/R6<0.9, where R1 is a radius of curvature of the object-side surface of the first lens, R4 is a radius of curvature of the image-side surface of the second lens, and R6 is a radius of curvature of the image-side surface of the third lens.