US 11,656,431 B2
Imaging lens system and camera module
Yong Joo Jo, Suwon-si (KR); Hag Chul Kim, Suwon-si (KR); and Hyo Jin Hwang, 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 Feb. 12, 2020, as Appl. No. 16/788,780.
Claims priority of application No. 10-2019-0127269 (KR), filed on Oct. 14, 2019.
Prior Publication US 2021/0109321 A1, Apr. 15, 2021
Int. Cl. G02B 9/60 (2006.01); G02B 13/00 (2006.01); H04N 5/225 (2006.01)
CPC G02B 9/60 (2013.01) [G02B 13/0045 (2013.01); H04N 5/2254 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lens imaging system, disposed sequentially from an object side, comprising:
a first lens having positive refractive power and comprising a convex image-side surface,
a second lens having refractive power and comprising a convex object-side surface;
a third lens having positive refractive power, and comprising a concave image- side surface;
a fourth lens having negative refractive power; and
a fifth lens having refractive power,
wherein TTL, a distance from an object-side surface of the first lens to an imaging surface, and BFL, a distance from an image-side surface of the fifth lens to the imaging surface, satisfy 1.0<TTL/BFL<3.0.