Premium
12.2: Narrow Angle Scattering Measurement of PDLC/PNLC Smart Window
Author(s) -
Tang Shu Tuen,
Chiu Hon Wah,
Tseng Man Chun,
Kwok Hoi Sing
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14382
Subject(s) - window (computing) , scattering , haze , viewing angle , optics , computer science , image (mathematics) , materials science , artificial intelligence , physics , liquid crystal display , meteorology , operating system
PDLC based smart window is currently the choice of switchable privacy window widely used in hotels and conference rooms. The ability of image hiding behind the window is now represented by the percentage haziness according to ASTM D1003 (or equivalent GB2410‐2008). The ASTM D1003 is originally designed for measuring wide angle light scattering with haze value less than 30%. This is not quite suitable for high haze level PDLC measurement. In this article, we introduce a narrow angle scattering (NAS) method that can better correlate the image hiding level and the measurement readings. An image hiding factor (IHF) is also introduced by making use of the narrow angle scattering measurement results.