US 11,698,513 B2
Optical system
Yong Joo Jo, Suwon-si (KR); and Jae Hyun Baik, 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. 14, 2019, as Appl. No. 16/441,605.
Application 16/441,605 is a division of application No. 15/059,888, filed on Mar. 3, 2016, granted, now 10,444,470.
Claims priority of application No. 10-2015-0101227 (KR), filed on Jul. 16, 2015.
Prior Publication US 2019/0293912 A1, Sep. 26, 2019
Int. Cl. G02B 3/02 (2006.01); G02B 13/18 (2006.01); G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An optical system, comprising:
a first lens;
a second lens comprising a negative refractive power;
a third lens of the lenses comprising a concave object-side surface;
a fourth lens comprising a negative refractive power and a convex image-side surface;
a fifth lens comprising a negative refractive power, an image-side surface including an inflection point, and a concave object-side surface; and
a sixth lens comprising a convex object-side surface,
wherein the fourth and the fifth lenses comprise a same refractive index,
wherein the first to sixth lenses are sequentially disposed from an object side to an image side,
wherein a radius of curvature of an image-side surface of the sixth lens is greater than a radius of curvature of the object-side surface of the sixth lens, and
wherein the optical system has a total number of six lenses with refractive power.