Cold mirror
IR filter at 850nm
Material : HWB850
Process : cutting, polishing and coating (protective coating)
Dimensions: D76 mm, thickness 3mm
Shape : flat round mirror
Surface quality : S&D 80/06
Optical treatment : protective SiO2 layer
Usage : optics for hunting / defense applications
Detail : cold mirrors are optics that separate the visible from the IR signal, reflecting the former and transmitting the latter.
Complete guide about optical mirrors.