Polytronix
       
             
       
   
Technology Specification Features Catalog
 
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  Light is scattered when passing through an optically inhomogeneous medium. PDLC (polymer dispersed liquid crystal) is a medium whose light scattering power is adjustable through applying an electric field. In their natural (uncharged) state, the PDLC droplets align randomly.  

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The ordinary refractive index of these liquid crystal (1) does not match that of the polymer (2), and the incident light is thus scattered, resulting in a translucent state. When an electric field is applied across the material, the PDLC droplets re-orient so that the extraordinary refractive index of the liquid crystal (3) matches that of the polymer. Therefore, the incident light can pass through, resulting in a transparent state.

 
 
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