Design a Model of Four Color Separation Prism in Satellite Camera

In this paper, in order to separate images in four spectral bands (from blue to near infrared) in multispectral cameras, four-color separation prism advantages are reviewed. Then, while description of ray tracing of four-color separation prism, main design parameters and principles are mentioned. After that, design of a four-color separation prism model that attached to detector (CCD) by using the Zemax software are described, also spot diagrams, ray tracing and aberration graphs are analyzed. Finally, while expression four-color separation prism characteristics that yield from programming with Zemax software, including weight, length of the optical path and thickness of equivalent blade, its specifications in remote sensing satellite multispectral cameras are explained.