I want to dye (or buy) a piece of glass or plastic (whatever works best) white. However, I still want to be able to see through it. I guess about 80% white - 20% transparent. I only need to see through from one side, so a mesh would probably be an Idea, however this is not the prefered solution.

The "frosted" look probably lets enough light through, however - it is not see through.

There are some electric "foils" that can be put on windows, to change it from clear to opaque( by percentage), but I dont think that this is the thing I'm looking for, because I don't have to change the opacity and like this I'd be reliable on electricity.

One side is dark, the otherone is most of the times bright, and the white side (perceved from the bright side) should be perceved as white even if the "outer" person is very close to the glass. The "see-through" from the inner site doesn't have to be perfect, like on a two way mirror, and it's okay, if the person has to get really close (like the distance of sunglasses). Pinnhole glasses won't do it.

I want to make some kind of lenses.

Maybe dye is not the way to go, I don't know. How would I solve this problem?

I beleve Legecy Effects, Airbrushed part of the Visor on Robocop, might this be a possibillyty? How would I do this, so it kepps to be a little bit transparent?

Feel free to edit the question, if it seems unclear and you think that you could claryfy it.

I want to make some kind of lenses.

I want to dye (or buy) a piece of white glass or plastic (whatever works best). However, I still want to be able to see through it - I guess about 80% white and 20% transparent. I only need to see through from one side, so a mesh would probably be a good idea, although it is not the preferred solution.

One side should be dark, the other bright most of the times, and the white side (as perceived from the bright side) should be perceived as white even if the "outer" person is very close to the glass. 
The "see-through" from the inner site doesn't have to be as perfect as a two-way mirror. It's okay if the person has to get really close (like the distance of sunglasses), but pinhole glasses won't do it.

• The "frosted" look probably would let enough light through but is not see-through.

• There are some electric "foils" that can be put on windows, to change it from clear to opaque (by percentage), but I don't think that this is the thing I'm looking for, because I don't need to change the opacity, and they would make the effect reliant on electricity.

• Dye could also be the way to go.

How could I solve this problem?

I like the airbrushed part of the visor on Robocop by Legacy Effects: could this be a possibility? How would I do this so it remains a little bit transparent?

I want to dye (or buy) a piece of glass or plastic (whatever works best) white. However, I still want to be able to see through it. I guess about 80% white - 20% transparent. I only need to see through from one side, so a mesh would probably be an Idea, however this is not the prefered solution.

The "frosted" look probably lets enough light through, however - it is not see through.

There are some electric "foils" that can be put on windows, to change it from clear to opaque( by percentage), but I dont think that this is the thing I'm looking for, because I don't have to change the opacity and like this I'd be reliable on electricity.

One side is dark, the otherone is most of the times bright, and the white side (perceved from the bright side) should be perceved as white even if the "outer" person is very close to the glass. The "see-through" from the inner site doesn't have to be perfect, like on a two way mirror, and it's okay, if the person has to get really close (like the distance of sunglasses).

Maby dye is not the way to go, I don't know. How would I solve this problem? Feel free to edit the question, if it seems unclear and you think that you could claryfy it.

I want to dye (or buy) a piece of glass or plastic (whatever works best) white. However, I still want to be able to see through it. I guess about 80% white - 20% transparent. I only need to see through from one side, so a mesh would probably be an Idea, however this is not the prefered solution.

The "frosted" look probably lets enough light through, however - it is not see through.

There are some electric "foils" that can be put on windows, to change it from clear to opaque( by percentage), but I dont think that this is the thing I'm looking for, because I don't have to change the opacity and like this I'd be reliable on electricity.

One side is dark, the otherone is most of the times bright, and the white side (perceved from the bright side) should be perceved as white even if the "outer" person is very close to the glass. The "see-through" from the inner site doesn't have to be perfect, like on a two way mirror, and it's okay, if the person has to get really close (like the distance of sunglasses). Pinnhole glasses won't do it.

I want to make some kind of lenses.

Maybe dye is not the way to go, I don't know. How would I solve this problem?

I beleve Legecy Effects, Airbrushed part of the Visor on Robocop, might this be a possibillyty? How would I do this, so it kepps to be a little bit transparent?

Feel free to edit the question, if it seems unclear and you think that you could claryfy it.

I want to dye (or buy) a piece of glass or plastic (whatever works best) white. However, I still want to be able to see through it. I guess about 80% white - 20% transparent. I only need to see through from one side, so a mesh would probably be an Idea, however this is not the prefered solution.

The "frosted" look probably lets enough light through, however - it is not see through.

There are some electric "foils" that can be put on windows, to change it from clear to opaque( by percentage), but I dont think that this is the thing I'm looking for, because I don't have to change the opacity and like this I'd be reliable on electricity.

One side is dark, the otherone is most of the times bright, and the white side (perceved from the bright side) should be perceved as white even if the "outer" person is very close to the glass. The "see-through" from the inner site doesn't have to be perfect, like on a two way mirror, and it's okay, if the person has to get really close (like the distance of sunglasses).

Maby dye is not the way to go, I don't know. How would I solve this problem?

I want to dye (or buy) a piece of glass or plastic (whatever works best) white. However, I still want to be able to see through it. I guess about 80% white - 20% transparent. I only need to see through from one side, so a mesh would probably be an Idea, however this is not the prefered solution.

The "frosted" look probably lets enough light through, however - it is not see through.

There are some electric "foils" that can be put on windows, to change it from clear to opaque( by percentage), but I dont think that this is the thing I'm looking for, because I don't have to change the opacity and like this I'd be reliable on electricity.

One side is dark, the otherone is most of the times bright, and the white side (perceved from the bright side) should be perceved as white even if the "outer" person is very close to the glass. The "see-through" from the inner site doesn't have to be perfect, like on a two way mirror, and it's okay, if the person has to get really close (like the distance of sunglasses).

Maby dye is not the way to go, I don't know. How would I solve this problem? Feel free to edit the question, if it seems unclear and you think that you could claryfy it.