Re: Across the Sea Of Time 3D, VM

[erker@xxxxxxxxxxxxxx (Greg Erker)]

John Weiler wrote:

>>>>The glasses were electronic LCD screens, and as someone mentioned before, I
>>>>don't understand why this technology was used instead of polarization.
>
>but observed earlier in his message:
>
>>>>(it was) the brightest 3D film image I've ever seen...
>
>I suspect it was bright precisely because it wasn't polarized.


  As far as I know all LCDs have polarizers in them. The liquid
crystal molecules align themselves when there is an applied
electric field. The LC then will polarize light passing thru it.
A polarizer is added in front of or behind the display so that
when the LC polarizes the result is a dark pixel, segment, or
window.

  At my previous job we had a TI hexadecimal calculator that
someone had opened up and flipped the polarizer over. The
calculator then had a white letters on a black background
instead of black on white. (For this to have worked I assume
the polarizer was at 45 degrees.)

Greg



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