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Design Considerations Of The Sunlight Readable Night Vision Image System Compatible KROMA Color Display

A sunlight readable night vision image system compatible three color display, using a KROMA (Kaiser. Rapid Optical Multi-Color Assembly) filter, has been designed for avionics application. The KROMA display, which uses a "monochrome" CRT and a liquid crystal optical switch, has been optimized for its color, brightness, contrast, and night vision image system compatibility. This approach provides excellent color saturation, high contrast ratio, and low NVIS (Night Vision Image System) radiance, making it attractive for using in night mission aircraft. This paper describes the design considerations in selecting phosphors, color filters, polarizers, and the methods of reducing the ambient light reflection.