The one-way perspective glass (also known as atomic mirrors, one mirror, one-way glass, one-way visual glass, etc.), is a special glass with high reflectance of visible light, usually used in the interrogation room or school of public security, judicial system auxiliary materials, set up psychological counseling rooms necessary and effective unidirectional perspective glass in the use of the reflecting surface must be welcome glossy or towards the outdoor side. When the bright outdoor than indoor, one-way perspective glass with ordinary mirror, outdoor look less than the indoor scene, but the room can see the outdoor scene. Dim outdoor than indoor, outdoor indoor scene, and indoor and outdoor scene can be seen, its definition depends on the strength of outdoor illumination. The one-way perspective glass hidden observation windows, holes, etc.. The product is available in the Public Security Bureau detention center, prison, court, Kara OK, offices, nursery schools, psychiatric hospitals and other special venues.