US 12,007,532 B2
Optical lens assembly, device, and image forming method
Byung-kwon Kang, Gyeonggi-do (KR); and Liefeng Zhao, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Oct. 30, 2020, as Appl. No. 17/084,898.
Application 17/084,898 is a continuation of application No. 15/770,998, granted, now 10,838,172, previously published as PCT/KR2016/009217, filed on Aug. 22, 2016.
Claims priority of application No. 10-2015-0153255 (KR), filed on Nov. 2, 2015.
Prior Publication US 2021/0048617 A1, Feb. 18, 2021
Int. Cl. G02B 9/36 (2006.01); G02B 13/00 (2006.01); G02B 27/00 (2006.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); G02B 9/64 (2006.01)
CPC G02B 13/004 (2013.01) [G02B 9/36 (2013.01); G02B 13/0045 (2013.01); G02B 27/0037 (2013.01); H04N 23/54 (2023.01); H04N 23/55 (2023.01); G02B 9/64 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical lens assembly comprising, from an object side to an image side:
a first lens having a positive refractive power;
a second lens immediately adjacent to the first lens, having a negative refractive power;
a third lens immediately adjacent to the second lens, having a negative refractive power; and
a fourth lens immediately adjacent to the third lens, having a positive refractive power,
wherein the fourth lens is a closest lens to an image plane, and
wherein the optical lens assembly satisfies the following condition:
0≤YL/YM<0.4
28<FOV<60 (Degrees),  <Condition>
where YL denotes a distance from an optical axis to a maximum sag in an image side surface of the fourth lens, YM denotes ½ of an effective diameter of the image side surface of the fourth lens, and FOV denotes a viewing angle.