The imaging system with large field of view, lightweight and small size is a developing direction of modern electro-optic detection equipments. A panoramic infrared night vision segmented by the four pathways andsmall diameter infrared lens is proposed. The implementation principle of the instrument is introduced. The systemis consisted of infrared objective lens, image segmented processor, organic light-emitting diode (OLED) micro-dis. play and infrared eye lens. Design parameters of the instrument are confirmed and a design example with 150° su.per-large field of view is presented.