US 11,966,015 B2
Optical imaging system
Ju Hwa Son, Suwon-si (KR); Jong Gi Lee, Suwon-si (KR); Yong Joo Jo, Suwon-si (KR); and Ju Sung 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 Dec. 14, 2020, as Appl. No. 17/120,926.
Application 17/120,926 is a continuation of application No. 16/152,779, filed on Oct. 5, 2018, granted, now 10,901,184.
Claims priority of application No. 10-2018-0016407 (KR), filed on Feb. 9, 2018.
Prior Publication US 2021/0096336 A1, Apr. 1, 2021
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical imaging system, comprising:
a first lens, a second lens, a third lens, a fourth lens, a fifth lens having a convex image-side surface in a paraxial region thereof, and a sixth lens sequentially arranged in numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system and each having a refractive power,
wherein:
a radius of curvature of an object-side surface of the sixth lens is greater, in a sense of more positive, than a radius of curvature of an object-side surface of the first lens,
an entire field of view of the optical imaging system is 50° or greater, and
TTL/f<1.0, where TTL is a distance from an object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system.