US 12,228,794 B2
Optical system
Ju Hwa Son, 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. 1, 2024, as Appl. No. 18/429,643.
Application 18/429,643 is a continuation of application No. 17/070,278, filed on Oct. 14, 2020, granted, now 11,921,352.
Application 17/070,278 is a continuation of application No. 15/916,629, filed on Mar. 9, 2018, granted, now 10,838,168, issued on Nov. 17, 2020.
Application 15/916,629 is a continuation of application No. 14/951,945, filed on Nov. 25, 2015, granted, now 9,952,404, issued on Apr. 24, 2018.
Claims priority of application No. 10-2014-0174342 (KR), filed on Dec. 5, 2014.
Prior Publication US 2024/0168257 A1, May 23, 2024
Int. Cl. G02B 9/62 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/62 (2013.01) [G02B 13/0045 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical system comprising:
a first lens having negative refractive power;
a second lens having positive refractive power and a convex object-side surface in a paraxial region thereof;
a third lens having refractive power and a convex object-side surface in a paraxial region thereof;
a fourth lens having negative refractive power;
a fifth lens having positive refractive power, a concave object-side surface in a paraxial region thereof and a convex image-side surface in a paraxial region thereof; and
a sixth lens having negative refractive power,
wherein the first to sixth lenses are sequentially disposed from an object side of the optical system,
wherein the optical system has a total of six lenses, and
wherein TTL/(ImgH*2)≤0.75 is satisfied, where TTL is a distance from an object-side surface of the first lens to an image plane of an image sensor, and ImgH is half of a diagonal length of the image plane.