Dongyeon Kim Seungjae Lee 0001 Jaebum Cho Duk-Ho Lee Kiseung Bang Byoungho Lee Enhancement of Depth Range in LED-based Holographic Near-Eye Display Using Focus Tunable Device. 2388-2391 2019 ISIE https://doi.org/10.1109/ISIE.2019.8781180 conf/isie/2019 db/conf/isie/isie2019.html#KimLCLBL19