US 11,984,927 B2
Band-pass concentrator for visible light communications system and visible light communications system
Shaolong Wu, Suzhou (CN); Jizhou Zhuang, Suzhou (CN); Jiayu Lu, Suzhou (CN); and Huilin Ni, Suzhou (CN)
Assigned to SOOCHOW UNIVERSITY, Suzhou (CN)
Appl. No. 17/802,554
Filed by SOOCHOW UNIVERSITY, Suzhou (CN)
PCT Filed Nov. 29, 2021, PCT No. PCT/CN2021/134185
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2023/040053, PCT Pub. Date Mar. 23, 2023.
Claims priority of application No. 202111074527.5 (CN), filed on Sep. 14, 2021.
Prior Publication US 2023/0308181 A1, Sep. 28, 2023
Int. Cl. H04B 10/116 (2013.01); G02B 19/00 (2006.01)
CPC H04B 10/116 (2013.01) [G02B 19/0009 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A band-pass concentrator for visible light communications, comprising:
a housing, wherein
a cavity is disposed in the housing, and the cavity is filled with a dielectric;
a light entrance that presents a concave spherical surface and that is recessed towards the cavity is disposed on a side of the housing; and
a light exit is disposed on a side of the housing that is opposite to the light entrance, a side of the light exit that is away from the cavity is configured with a multilayer dielectric film that has a filtering function, and a half central angle of the concave spherical surface is from 60° to 90°.