US 11,982,789 B2
Optical lens assembly
Jiali Lian, Fujian (CN); Hung-Chien Hsieh, Fujian (CN); Huabin Liao, Fujian (CN); and Lanlan Zhang, Fujian (CN)
Assigned to GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed by GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD., Fujian (CN)
Filed on Dec. 9, 2020, as Appl. No. 17/115,797.
Claims priority of application No. 202011013664.3 (CN), filed on Sep. 24, 2020.
Prior Publication US 2022/0091374 A1, Mar. 24, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/12 (2006.01); G02B 27/00 (2006.01)
CPC G02B 13/0035 (2013.01) [G02B 9/12 (2013.01); G02B 27/0025 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical lens assembly, comprising a first lens element, a second lens element and a third lens element in order from a light exit side to a light incident side along an optical axis, wherein each of the first lens element to the third lens element comprises a light exit surface facing the light exit side and a light incident surface facing the light incident side, wherein
the first lens element has positive refracting power, and a periphery region of the light incident surface of the first lens element is concave;
a periphery region of the light exit surface of the second lens element is convex;
an optical axis region of the light exit surface of the third lens element is convex, and an optical axis region of the light incident surface of the third lens element is convex; and
lens elements of the optical lens assembly are only the first lens element to the third lens element described above, and the optical lens assembly satisfies the following condition: EFL/BFL≥3.500, wherein EFL is an effective focal length of the optical lens assembly, and BFL is a distance from the light incident surface of the third lens element to a light-emitting surface along the optical axis.