WHAT’S THE MIRROR TV?
Why it looks like a mirror when it is turned off, but you can watch movies when it is turned on? The secret is that there is a TV mirror in front of the television. The television is hidden behind the mirror. The TV mirror has some professional names, such as a two-way mirror and a dielectric mirror.
The dielectric mirror is an optical glass lens in which the color is silvery white. It’s making process is that the manufacturers use the nano sputtering technology to cover the transparent glass with a thin metal film.
Change the parameters of the metal film, the manufacturers can produce several kinds of dielectric mirrors with different transmittance and reflectivity. The applications of the TV mirror are very wide. If you want to make a smart mirror, then a DIY mirror guide is necessary for you.
There are 3 types of dielectric mirrors that are commonly used. The transmittance and reflectivity of the 3 types are:
30% 70%,
50% 50%
70% 30%.
The effect of the first type is the best for mirror television. Caused by the transmittance is just 30%, so the mirror TV has a high requirement for the brightness of the television. The brightness of commonly used televisions is about 250 nits. In order for it’s bright enough, the brightness of the television that behind the mirror needs to be about 250 / 30%= 750 nits. If there is sunshine in your room, or your mirror is installed outside, then the requirement for the brightness is higher.
