Granted Patent B2

US 12,554,098 · App. 18/584,202 · Granted Feb 17, 2026

Inventors: Hag Chul Kim (Suwon-si, KR); Yong Joo Jo (Suwon-si, KR)

Assignee: Samsung Electro-Mechanics Co., Ltd.

G02B9/34G02B13/004

Abstract

Claims (14)

1 . An optical imaging system, comprising:

a first lens having a refractive power;

a second lens having a refractive power and a convex object-side surface in a paraxial region thereof;

a third lens having a convex object-side surface in a paraxial region thereof; and

a fourth lens having positive refractive power and a convex object-side surface in a paraxial region thereof,

wherein the first to fourth lenses are sequentially disposed from an object side to an image surface of the optical imaging system,

wherein the optical imaging system has a total number of four lenses with refractive power,

wherein 1.580<Nd1<1.640, where Nd1 is a refractive index of the first lens,

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 third lens, and

wherein a radius of curvature of an image-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens, and

wherein an absolute value of a radius of curvature of an image-side surface of the second lens is greater than an absolute value of a radius of curvature of an image-side surface of the third lens.

2 . The optical imaging system of claim 1 , wherein the first lens has a convex object-side surface in a paraxial region thereof.

3 . The optical imaging system of claim 1 , wherein the second lens has a concave image-side surface in a paraxial region thereof.

4 . The optical imaging system of claim 1 , wherein the fourth lens has a concave image-side surface in a paraxial region thereof.

Priority Claims (1)

Continuity (3)

References Cited (46)