Can the mirror reflect the infrared spectrum?

The back of ordinary mirror is made of aluminum film, which can reflect near-infrared light below 1.5um as a whole.

-

I don't know if you are curious or professional. Ordinary mirrors belong to back reflector, and the reflection spectrum is determined by the transmission spectrum of protective glass and the reflection spectrum of reflective film. Ordinary mirror glass blackness is more than 90%, room temperature radiation 10um center bandwidth far infrared, night vision device? ! There are at least three kinds, and low-light night vision is the most common. The principle is to amplify the intensity of visible light and use it to see the same scenery as the human eye. The other two are to convert 5um, 10um2 far red light into visible light images respectively. For it, the mirror is a black object with a smooth surface, which can also be used as a mirror, but the reflected light intensity is very weak.