Unidirectional glass is a kind of special glass with high reflectance to visible light. When using unidirectional glass, the reflecting surface must be the light facing surface or the outdoor side. When the outdoor is brighter than the indoor, the unidirectional glass is similar to the ordinary mirror. The indoor scenery can not be seen outdoors, but the outdoor scenery can be clearly seen indoors. When the outdoor is darker than the indoor, the indoor scenery can be seen outdoors, and the outdoor scenery can also be seen indoors. Its clarity depends on the intensity of outdoor lighting.
Unidirectional glass is mainly suitable for shaded viewing windows, holes, etc. It is widely used in Public Security Bureau, detention center, prison, court, karaoke, office, school observation classroom, physical hospital, nuclear power plant, military secret disclosure department and other places.
To correctly install unidirectional glass, the following 5 steps must be followed:
1. Unidirectional glass is divided into positive and negative sides. The front is a glass mirror. When installing, the mirror should face the monitored room (e.g. the space where the meritorious suspect is located).
2. The light ratio between the monitoring room and the monitored room is proposed to be controlled at 1:10. The stronger the light in the monitored room, the more obvious the unidirectional effect of the glass. If the monitoring room is equipped with windows, the curtains shall be pulled to block the use, that is, the monitoring room shall not penetrate natural light as far as possible.
3. No luminous light source is allowed on the criterion of the monitoring room. If the monitoring room needs to be equipped with light, the light shall be installed at the corner above the glass as far as possible to prevent the image of indoor monitoring personnel from directly mapping to the glass surface.
4. In order to enhance the overall reflection effect of the glass mirror, it is proposed to install an average spotlight above the glass mirror in the monitored room at an angle of 45 ° to the middle of the glass mirror, so as to strengthen the overall reflectivity of the mirror and improve the unidirectional effect.
5. The practical interval between monitored personnel and unidirectional glass shall be ≥ 0.5-1m.
At the end of the one-way glass device, pay attention to the maintenance of the glass mirror. Clean the glass mirror. It is recommended to use a chicken feather duster to remove the surface dust. It is not suitable to wipe the glass mirror with sharp and rough objects
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