US 12,242,029 B2
Optical imaging system
Jong Pil Kim, Suwon-si (KR); Sot Eum Seo, Suwon-si (KR); and Ji Su Lee, 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 May 31, 2022, as Appl. No. 17/828,469.
Claims priority of application No. 10-2021-0173555 (KR), filed on Dec. 7, 2021.
Prior Publication US 2023/0176329 A1, Jun. 8, 2023
Int. Cl. G02B 13/00 (2006.01); G02B 3/00 (2006.01); G02B 13/16 (2006.01)
CPC G02B 13/0035 (2013.01) [G02B 3/0043 (2013.01); G02B 13/16 (2013.01); G02B 2003/0093 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens having a convex image-side surface, a second lens, and a third lens disposed in order from an object side,
wherein:
1.2 mm<TTL<2.0 mm,
0<f3/f<1.0, where TTL is a distance from an object-side surface of the first lens to an imaging plane, f is a focal length of the optical imaging system, and f3 is a focal length of the third lens, and
a radius of curvature of an object-side surface of the first lens is greater than a radius of curvature of an image-side surface of the third lens.