US 12,313,822 B2
Optical imaging system
Il Yong Park, 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 Apr. 7, 2022, as Appl. No. 17/715,150.
Application 17/715,150 is a continuation of application No. 17/025,490, filed on Sep. 18, 2020, granted, now 11,333,863.
Application 17/025,490 is a continuation of application No. 15/431,112, filed on Feb. 13, 2017, granted, now 10,816,763, issued on Oct. 27, 2020.
Claims priority of application No. 10-2016-0131910 (KR), filed on Oct. 12, 2016.
Prior Publication US 2022/0229276 A1, Jul. 21, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An optical imaging system comprising:
a first lens comprising positive refractive power;
a second lens comprising positive refractive power and a convex object-side surface;
a third lens comprising a concave image-side surface;
a fourth lens comprising a refractive power;
a fifth lens comprising negative refractive power; and
a sixth lens comprising a convex object-side surface in a paraxial region,
wherein the first to sixth lenses are sequentially disposed from an object side of the optical imaging system,
wherein the optical imaging system has a total number of six lenses with refractive power,
wherein the optical imaging system satisfies TTL/f12<1.90, where TTL is a distance from an object-side surface of the first lens to an imaging plane and f12 is a composite focal length of the first lens and the second lens, and
wherein a distance from the image-side surface of the third lens to an object-side surface of the fourth lens is greater than a distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens.