I understand the basics of them but I’ve been stumped by how the glass used in them reflects the light of the display into the users eye whilst still letting external light to pass through, all the while prevent the display light from being seen from anyone on the outside. How does this work?
In: Technology
The use a thin mirror like coating. In police shows the show someone in an lineup. The people on the lineup can’t see the eye witness.
That is a one way mirror, you can through in one direct only. To the other side it seems like a mirror.
The HUD projects the light onto a one way mirror and then to the user. From the outside it is not visible. Just like the eyewitness can not see the reflection of the suspects in the lineup.
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