Optical properties of Hg1-xCdxTe are summarized in this study. Based o
n Penn-like models, the Moss relation and the Wemple and DiDomenico ap
proach, calculations of energy gap, plasmon energy, Fermi energy, osci
llator strength and electronic polarizability have been made. Comparis
ons are made with the data available in the literature. Details of the
dependency of the properties on composition are presented.