US 12,032,126 B2
Optical imaging system
Il Yong Park, 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. 23, 2020, as Appl. No. 17/078,416.
Application 17/078,416 is a continuation of application No. 16/397,048, filed on Apr. 29, 2019, granted, now 10,852,515.
Application 16/397,048 is a continuation of application No. 15/445,125, filed on Feb. 28, 2017, granted, now 10,317,645, issued on Jun. 11, 2019.
Claims priority of application No. 10-2016-0159263 (KR), filed on Nov. 28, 2016.
Prior Publication US 2021/0041672 A1, Feb. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical imaging system, comprising:
a first lens comprising a concave image-side surface along an optical axis;
a second lens comprising a concave image-side surface along the optical axis;
a third lens comprising a positive refractive power;
a fourth lens comprising a positive refractive power and a concave object-side surface in a paraxial region;
a fifth lens;
a sixth lens comprising a positive refractive power; and
a seventh lens comprising a convex object-side surface along the optical axis,
wherein the first lens to the seventh lens are sequentially disposed from an object side toward an imaging plane,
wherein the optical imaging system comprises a total number of seven lenses with refractive power,
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 sixth lens, and
wherein a radius of curvature of an image-side surface of the fifth lens is greater than a radius of curvature of an object-side surface of the fourth lens.