US 11,914,126 B2
Optical imaging system
Hag Chul Kim, Suwon-si (KR); and 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 Jul. 7, 2021, as Appl. No. 17/369,274.
Application 17/369,274 is a continuation of application No. 16/295,055, filed on Mar. 7, 2019, granted, now 11,092,789.
Claims priority of application No. 10-2018-0044964 (KR), filed on Apr. 18, 2018; and application No. 10-2018-0115988 (KR), filed on Sep. 28, 2018.
Prior Publication US 2021/0333527 A1, Oct. 28, 2021
Int. Cl. G02B 5/04 (2006.01); G02B 13/00 (2006.01); G02B 13/02 (2006.01); G02B 15/177 (2006.01)
CPC G02B 15/177 (2013.01) [G02B 5/04 (2013.01); G02B 13/002 (2013.01); G02B 13/009 (2013.01); G02B 13/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical imaging system, comprising:
a first lens group configured to move in an optical direction and having negative refractive power;
a second lens group comprising three lenses and configured to move in the optical direction and having positive refractive power; and
a third lens group disposed adjacent to the second lens group and configured to move in the optical direction and having negative refractive power,
wherein the first lens group, the second lens group, and the third lens group comprise a plurality of lenses and the optical imaging system includes a total of seven lenses,
wherein the lens closest to the imaging plane in the optical system is in the third lens group, and
wherein at least one of the plurality of lenses includes an aspherical surface.