Common detection dual-optical-path switchable medium-wave infrared imaging device and method

The invention provides a switchable medium-wave infrared imaging device and method capable of sharing detection double optical paths, and relates to the technical field of aviation, and the device comprises an infrared continuous zoom lens group, an infrared fixed-focus lens group, a main support frame, a medium-wave infrared detector, a switching lens body, and a shared imaging lens group. The infrared continuous zoom lens group and the infrared prime lens group share one medium-wave infrared detector, a slidable switching lens body capable of gating a light path is added in the light path to realize the selection of the light path, the structural layout is reasonable, the infrared prime lens is more economical, the infrared prime lens can realize long-focus and long-distance detection to realize the large-view-field wide-area search of the continuous zoom lens, and the large-view-field wide-area search of the continuous zoom lens is realized. The infrared fixed-focus lens performs accurate fixed-point ident