The increased desire for visible light/infrared dual band imaging systems with compact structure, high resolution coverage and without significantly complicates the optical design is increasing. Such systems are particularly desirable for aerial imaging applications where increased levels of target reconnaissance, precision target location and designation are required in cost-effective and light weight systems. Therefore, in this paper, a high resolution Electro-optical/infrared (EO/IR) system to simultaneously operate in the visible band and short wave infrared band (SWIR) band using ZEMAX software are presented. It has a common aperture using Ritchey-Chrétien (R-C) system and the spectrum is separated using a dichroic beam splitter. The results of the optical design indicated that our proposed approach meets the technical performance requirements for high image performance and compact size. This system can be applied in aerial remote sensing applications.