US 12,013,517 B2
Optical imaging system having prism, fixed lens groups, and movable lens groups
Hag Chul Kim, 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 Jun. 24, 2021, as Appl. No. 17/357,135.
Application 16/460,232 is a division of application No. 15/092,989, filed on Apr. 7, 2016, granted, now 10,386,615, issued on Aug. 20, 2019.
Application 17/357,135 is a continuation of application No. 16/460,232, filed on Jul. 2, 2019, granted, now 11,079,572.
Claims priority of application No. 10-2015-0143647 (KR), filed on Oct. 14, 2015.
Prior Publication US 2021/0318524 A1, Oct. 14, 2021
Int. Cl. G02B 13/00 (2006.01); A61B 18/04 (2006.01); A61B 18/14 (2006.01); G02B 15/14 (2006.01); G02B 15/167 (2006.01); G02B 15/177 (2006.01); G02B 27/64 (2006.01); A61B 18/00 (2006.01)
CPC G02B 13/0065 (2013.01) [A61B 18/042 (2013.01); A61B 18/1402 (2013.01); G02B 13/002 (2013.01); G02B 13/006 (2013.01); G02B 15/144 (2019.08); G02B 27/646 (2013.01); A61B 2018/00744 (2013.01); G02B 15/167 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical imaging system, comprising:
a first fixed lens group comprising lenses having different refractive powers;
a prism disposed between the lenses of the first fixed lens group;
a first movable lens group configured to be movable to change an overall focal length;
a correction lens group configured to move in an optical axis direction or a direction intersecting with the optical axis;
a second movable lens group configured to be movable to finely adjust the overall focal length; and
a second fixed lens group,
wherein a distance between the first movable lens group and the correction lens group is longest at a wide angle end and is shortest at a telephoto end,
wherein a distance between the correction lens group and the second movable lens group is longest at the wide angle end and shortest at the telephoto end,
wherein a lens of the correction lens group disposed closest to an object side of the correction lens group has a convex object-side surface,
wherein a lens of the first movable lens group disposed closest to an object side of the first movable lens group has a convex object-side surface, and
wherein the first fixed lens group, the first movable lens group, the correction lens group, the second movable lens group, and the second fixed lens group are sequentially disposed from an object side toward an imaging plane.