US 11,698,515 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 Jun. 3, 2022, as Appl. No. 17/831,553.
Application 16/140,768 is a division of application No. 14/643,253, filed on Mar. 10, 2015, granted, now 10,114,195, issued on Oct. 30, 2018.
Application 17/831,553 is a continuation of application No. 16/866,075, filed on May 4, 2020, granted, now 11,378,784.
Application 16/866,075 is a continuation of application No. 16/140,768, filed on Sep. 25, 2018, granted, now 10,678,026, issued on Jun. 9, 2020.
Claims priority of application No. 10-2014-0139756 (KR), filed on Oct. 16, 2014.
Prior Publication US 2022/0291487 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 13/04 (2006.01); G02B 13/00 (2006.01); G02B 9/64 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/64 (2013.01); G02B 13/04 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An optical system comprising:
a first lens having a negative refractive power;
a second lens having a positive refractive power;
a third lens having a positive refractive power;
a fourth lens having a positive refractive power;
a fifth lens having a negative refractive power;
a sixth lens having a positive refractive power; and
a seventh lens having a negative refractive power,
wherein the first to seventh lenses are sequentially disposed in ascending numerical order from an object side of the optical system toward an image side of the optical system, and
53°<ANG/Fno<61° is satisfied, where ANG is a field of view of the optical system and Fno is a constant indicating a brightness of the optical system.