US 11,927,829 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 Jul. 22, 2022, as Appl. No. 17/871,568.
Application 17/871,568 is a continuation of application No. 16/940,838, filed on Jul. 28, 2020, granted, now 11,428,899.
Application 16/940,838 is a continuation of application No. 16/558,783, filed on Sep. 3, 2019, granted, now 10,761,299, issued on Sep. 1, 2020.
Application 16/558,783 is a continuation of application No. 15/983,435, filed on May 18, 2018, granted, now 10,444,469, issued on Oct. 15, 2019.
Application 15/983,435 is a continuation of application No. 15/292,369, filed on Oct. 13, 2016, granted, now 10,001,623, issued on Jun. 19, 2018.
Claims priority of application No. 10-2016-0010776 (KR), filed on Jan. 28, 2016.
Prior Publication US 2022/0365318 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 3/02 (2006.01); G02B 9/00 (2006.01); G02B 9/62 (2006.01); G02B 9/64 (2006.01); G02B 13/00 (2006.01); G02B 27/00 (2006.01); G02B 3/04 (2006.01); G02B 5/00 (2006.01); G02B 13/18 (2006.01)
CPC G02B 9/64 (2013.01) [G02B 13/0045 (2013.01); G02B 27/0025 (2013.01); G02B 3/04 (2013.01); G02B 5/005 (2013.01); G02B 13/18 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical imaging system, comprising:
a first lens comprising a positive refractive power and a concave image-side surface;
a second lens comprising a convex object-side surface;
a third lens comprising a refractive power;
a fourth lens comprising a refractive power;
a fifth lens comprising a refractive power;
a sixth lens comprising a convex object-side surface and a concave image-side surface; and
a seventh lens comprising a negative refractive power,
wherein the first to seventh lenses are sequentially disposed from an object side toward an imaging plane,
wherein an absolute value of a radius of curvature of an image-side surface of the fourth lens is greater than an absolute value of a radius of curvature of the object-side surface of the sixth lens, and
wherein 3.0<|f4/f|, where f is an overall focal length of the optical imaging system and f4 is a focal length of the fourth lens.