Test methods of single mirror and double mirror

The test methods of single-sided mirror and double-sided mirror are: observation, knocking on the mirror to listen to the sound, and flashlight judgment.

1, observation method: pick up a single-sided mirror and put it in front of your eyes to observe whether the image on the reflecting surface is clear. If the image is not clear or blurred, then the mirror is unqualified.

2, knocking on the mirror to listen to the sound: knocking on the mirror to listen to the sound, the sound cavity is slightly echoed by the double mirror.

3, flashlight judgment method: turn off all the lights, touch the mirror or glasses with a flashlight, block the light with both hands, and carefully look at whether there is anything behind the glass, you can tell whether it is a single mirror or a double mirror.

Brief introduction of one-way perspective glass

One-way perspective glass (also known as atomic mirror, SLR mirror, SLR glass, double mirror and unidirectional glass) is a kind of glass with high reflectivity to visible light.

When using one-way perspective glass, the reflecting surface (mirror) must face the light or the outdoor side. When the outdoor is brighter than the indoor, the one-way perspective glass is similar to an ordinary mirror, and you can't see the indoor scenery outdoors, but you can see the outdoor scenery indoors. When the outdoor is darker than the indoor, you can see the outdoor scenery, and you can also see the outdoor scenery indoors. Its clarity depends on the intensity of outdoor lighting.

One-way perspective glass is a special glass, so attention should be paid to protecting the mirror surface of the glass when installing it. Once the mirror is damaged, it cannot be repaired. The new safe one-way perspective glass overcomes this shortcoming and has the characteristics of scratch resistance and corrosion resistance.

The above contents refer to Baidu Encyclopedia-One-way Perspective Glass.