I remember as a kid when I went to a 3D movie and you would have to wear those glasses with one blue eye and one red. Then a couple years later, you don’t need those red/blue glasses but these clear ones. And now you don’t need glasses at all.
Why is that?
In: 9
So the red/blue or red/green method essentially made your two eyes see different images that your brain then merged together to give the illusion of three dimensional image. This works because the image being projected has a red image and one has a blue (or green, less popular) offset. The red lens blocks the ~~red~~ blue light and the blue/green lens blocks the other set of light and this is how it makes each eye see a different image.
The trouble with using color to make each eye see a different image is that it significantly impacts the color of the image you’re seeing. So, they produced the “clear” method that uses polarized lenses to get the same effect.
I say “clear” because it’s actually colored yellow and brown. With the polarized method there are two images projected, one polarized horizontal, one polarized vertical and the glass’s lenses each blocks light of a vertical and horizontal polarization respectively giving the illusion of three dimensions with a much lower impact to color quality.
[https://entertainment.howstuffworks.com/why-arent-3d-glasses-red-and-blue.htm](https://entertainment.howstuffworks.com/why-arent-3d-glasses-red-and-blue.htm)
Latest Answers