US 11,808,920 B2
Optical imaging system
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 Nov. 30, 2020, as Appl. No. 17/106,248.
Application 17/106,248 is a continuation of application No. 15/085,429, filed on Mar. 30, 2016, granted, now 10,877,246.
Claims priority of application No. 10-2015-0142840 (KR), filed on Oct. 13, 2015.
Prior Publication US 2021/0080705 A1, Mar. 18, 2021
Int. Cl. G02B 13/00 (2006.01); G02B 5/00 (2006.01); G02B 5/20 (2006.01); G02B 9/60 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 5/005 (2013.01); G02B 5/208 (2013.01); G02B 9/60 (2013.01); G02B 27/0025 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens having positive refractive power, a convex object-side surface, and a concave image-side surface;
a second lens having negative refractive power, a concave object-side surface at a paraxial region, and a concave image-side surface;
a third lens having positive refractive power and a concave object-side surface;
a fourth lens having positive refractive power and a concave object-side surface; and
a fifth lens having negative refractive power, a concave object-side surface, and a concave image-side surface,
wherein the first to fifth lenses are sequentially disposed in ascending numerical order from an object side of the optical imaging system toward an imaging plane,
wherein a thickness along an optical axis of the first lens is greater than a thickness along an optical axis of the fourth lens,
wherein a radius of curvature of the image-side surface of the fifth lens is greater than a radius of curvature of the image-side surface of the second lens, and
wherein a distance from the image-side surface of the second lens to the object-side surface of the third lens is greater than a distance from an image-side surface of the fourth lens to the object-side surface of the fifth lens.