The application provides an
infrared multispectral imaging terminal, comprising: a vacuum box body, the temperature in the vacuum box body is lower than 120K, the vacuum box body comprises an
infrared window; an optical
assembly arranged in the vacuum box body, the optical
assembly comprises a supporting
cold plate and an optical element arranged on the supporting
cold plate, the optical element is used for transmitting and focusing received
infrared light; a
filter wheel assembly arranged in the vacuum box body, comprising: a support, a
filter wheel and a
servo motor arranged on the support, the
servo motor drives the
filter wheel to rotate in the vacuum box body; an
infrared detector arranged in the vacuum box body, used for receiving infrared light entering from the
infrared window, focused by the optical element and filtered by the filter wheel assembly; wherein the inner surface of the vacuum box body, the supporting
cold plate and the surface of the filter wheel assembly are blackened, so that the infrared
emissivity of the inner surface of the vacuum box body, the supporting cold plate and the surface of the filter wheel assembly is greater than or equal to 0.85. The application can improve the infrared
imaging quality.