Model for coherent transmittance calculation for polymer dispersed liquid crystal films

This paper analyses the methods of calculating the coherent (direct) transm ittance of polymer dispersed liquid crystal ( PDLC) films which are polymer -based films with embedded liquid crystal droplets. By comparison with expe rimental data it is shown that at a high concentration of LC droplets, Beer 's law, which is frequently used, leads to large errors in calculations of the transmittance of PDLC films. To calculate coherent transmittance, it is expedient to use the interference approximation which takes into account t he interference of waves scattered by individual LC droplets and leads to m uch more accurate results.