We have calculated the scattering properties of a single droplet with uniform and radial structures in PDLCs in the absence of a voltage for a non-collimated system such as a real PDLC projector. In these calculations, we have developed Zumer's result for a collimated system based on the anomalous diffraction approach. The scattering properties of PDLCs depend not only on droplet properties, e. g. refractive indices, radius and director configuration, but also on the film thickness and the number density of droplets. Assuming a constant concentration, we have shown that the scattering properties of PDLCs can be discussed in terms of an efficiency factor, which removes the dependence on thickness and number density. The differences between collimated and non-collimated systems are discussed as well as the effects of refractive indices, droplet radius and angular dependence of the scattering.