Some considerations on cross-talk of reconstructed diffractive color images using He-Cd laser and dichroic mirror

A blue white beam of commercially available He-Cd laser is simply divided into the light with three primary colors, i.e., R/G/B components, using a set of dichroic mirrors. The dichroic mirror is widely used in color TV cameras or in optical special sensors to separate the visual image into its three primary color components. In this study, influence on additive color mixture of two types of reconstructed hologram images is checked from the optical experimental results using the He-Cd laser and dichroic mirrors. The visual appearance and deterioration of reconstructed images owing to the crosstalk are discussed as for the optical Fresnel hologram and computer generated FTH (Fourier Transform Hologram). In the case of the Fresnel hologram, the reduction ratio, i.e., estimation value of reconstructed color images is considered from the theoretical and experimental viewpoints.