Speaking of which - I saw a Hack-a-day article a few years ago where someone actually removed to top polarized surface of an LCD screen (very carefully) and made what looked like glasses out of the material.
Since the display panel no longer had the top polarizing layer - no one could read the display without wearing/looking-through the polarized material.
It was touted as a privacy project.
Look here:
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On Monday, March 1, 2021, 2:03:08 p.m. EST, Jim Lux <jim@...> wrote:
On 3/1/21 9:38 AM, Larry Rothman wrote:
? How about using a piece of privacy glass/plastic - the type that allows you to see the display straight-on?
I think it would block out light from the side.? Of course, it would be useless if the sun was behind you....
There's two kinds of these - one is little tiny louvers (Light Control
Film), the other is a circular polarizer (the reflection flips the
polarization, so it gets blocked on the way back out). I'm not sure how
the CP ones would work on a LCD display (since the light from the
display is polarized).
(I'm looking into this for another application, so I've just started
researching it)
