Design of Multi-Layered Structure of Pigments for Optical Camouflage Coating

Nowadays, with the astounding progress and development of hyperspectral imaging systems, the use of spectral knowledge of materials for building camouflage coatings is inevitable. In order to design the optical camouflage coatings possessing appropriate spectral similarity with the intended background, this study determines the optimal thickness of the multi-layer pigment structure in the visible and infrared ranges using a multi-layer interference transmittance filter. In the performed process, the transmittance matrix method and the genetic algorithm have been used. As a case study, the design of a multi-layer structure of optical camouflage in vegetation backgrounds is executed using germanium and zinc sulfide. Results suggest that the multi-layer structure is similar to that of the vegetation, based on the different spectral similarity meseaures and the correlation coefficient.