Privacy glass is designed
by principles of polymer liquid-crystal optics. In the natural
state, liquid crystal droplets are aligned randomly in the polymer
and the reflective index of liquid crystal does not match that
of polymer (np ¡Ù ne), so the incident lights are scattered,
resulting in a translucent state. When an electrical field i s
applied, the liquid crystal droplets reorients so its extraordinary
relective index matches that of polymer (np = ne), resulting
in a transparent state.
Typical applications include control
room and command center for govenrment facilities, executive
offices and conference room, special effects for entertainment
industry, exhibition, and outdoor advertisement.
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