One-way glass is widely used in prisons, interrogation rooms of public security organs, mental hospitals, laboratories of university scientific research institutions, large conference rooms, office buildings, school observation classrooms, nuclear power plants, military security departments and other places. According to different structures, unidirectional glass can be divided into ordinary unidirectional glass and explosion-proof unidirectional glass. Ordinary unidirectional glass is mainly 5-6 cm thick, reinforced unidirectional glass is mainly 10- 12 cm thick, and explosion-proof unidirectional glass is the mainstream product in the market because of its high explosion-proof and explosion-proof functions.

1, one-way glass is divided into two sides. The front is a glass mirror that reflects light. When installing, the front should face the monitored room (that is, the observed space, such as the space where the suspect is located). ); Turn the reverse side to the position of the judge (that is, the monitoring room).

2. The light intensity of the monitored room should ensure sufficient brightness. The brighter and stronger the light in the monitored room, the more obvious the one-way perspective effect of the glass will be. When the light intensity of the monitored room is greater than that of the monitoring room, the one-way perspective glass is similar to an ordinary mirror, so that people and things in the monitored room can't be seen, but the monitor in the monitored room can clearly see every move in the monitored room. When the light intensity of the monitoring room is consistent with that of the monitored room, the monitoring room can see people and things in the monitored room, and the monitored room may also see people and things in the monitored room. Therefore, when installing one-way glass, it is necessary to ensure that the light intensity of the monitored room is much greater than that of the monitored room.

3. In order to make the glass achieve the best one-way perspective performance, ceiling lamps are not installed in the monitoring room in principle, and other light sources are not allowed to exist. If there is a window next to the monitoring room, opaque curtains must be installed, such as sealed curtains for hotels. When in use, it is recommended to turn off all lights in the monitoring room.

4. If the monitoring room must use lighting, it is suggested to use point lighting, such as writing desk lamp (lampshade is opaque) to narrow the lighting range. The lighting ratio between the monitoring room and the monitored room should be controlled at 1: 10, or lower, so as to ensure the one-way perspective performance of the glass is intact. (Note: The lamp cannot be directly installed behind the glass to avoid reflecting the image of people in the monitoring room on the glass surface. )

5. In order to enhance the overall reflectivity of one-way glass, it is suggested to install spotlights above or below the glass mirror to enhance the overall reflectivity of the glass mirror and improve the one-way perspective effect of the glass.

6. The actual distance between the monitored personnel and the one-way perspective glass should be kept at ≥0.8- 1 m..

7. One-way glass is a special kind of glass, and attention should be paid to protecting the glass mirror surface during installation. Once the mirror is damaged, it cannot be repaired.