Optical arrangement for providing privacy

Teemu Ruotsalainen (Inventor), Asko Sneck (Inventor), Tapio Mäkelä (Inventor)

Research output: PatentPatent


A masking device disposed over a display has a first viewing region, a second viewing region, a first operating mode, and a second operating mode, wherein in the first operating mode the masking device allows a first observer located in the first viewing region to observe information displayed on the display, and also allows a second observer located in the second viewing region to observe the displayed information, wherein in the second operating mode the masking device projects light to the second viewing region so as to prevent the second observer from observing the displayed information.

Patent family as of 1.9.2022

CN114035259 A20220211CN20211124803620211026 
FI20206055 A20220427FI2020000605520201026 
US11409030 BB20220809US2021051102820211026 
US2022128757 AA20220428US2021051102820211026 
WO22090614 A120220505WO2021FI5071020211025

Link to current patent family on right 

Original languageEnglish
Patent numberUS11409030
IPCG02F 1/ 137 A I
Priority date26/10/20
Publication statusPublished - 28 Apr 2022
MoE publication typeH1 Granted patent


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