The Principle Of One Way View Mirror

One way view mirror ,also known as a double-sided perspective mirror glass is a float glass with a high reflectivity to visible light. One way view mirror in use must be reflective (mirror) face or towards the outdoor side. When the outdoor is brighter than the indoor, the one-way perspective glass is similar to the ordinary mirror glass, the indoor scenery can not be seen outside, but the indoor can see the outdoor scenery clearly. But when the outdoor is darker than the indoor, the outdoor can see the indoor scenery, and the indoor can also see the outdoor scenery, its clarity depends on the intensity of the outdoor illumination.

Principle of One way view mirror

One way view mirror is a kind of special optical glass which can only catch a specular object. single perspective glass has very strong reflectivity and a certain amount of transmittance. When looking at a half mirror glass on the observed surface, due to the sufficient light on the observed surface, the person on the observed surface can only see the reflected specular object, but cannot capture the low-light object behind the sheet glass. Because of the darkness of their own environment, the person on the observation surface can not see the reflection of the observation surface, but can see the high brightness of the observation surface.

According to the law of reflection of light, the ordinary mirror glass is made by electroless silver plating, and silver nitrate is deposited on one side of  the glass sheets. When the light hits the silver coating on the back of the glass sheets, almost all of the reflection can be seen in the human eye. When making a One way view mirror, the flat glass surface is coated with a thin layer of reflective material (reflective paint or metal). When the observer is directly in front of the mirror, he sees nothing different from what is in the mirror glass, and it is also a reflective image. But because the reflective coating is too thin, the light is not completely reflected to the observer, but most of the light penetrates through the flat glass and continues to propagate on the other side.

One way view mirror is mainly suitable for hidden observation windows, holes and so on. The product can be used in public security bureau, detention center, police station, prison, court, procuratorate, karaoke, office, kindergarten, psychiatric hospital and other special places.