The 1850 lumen GE Talaria Projector (from the 1970s) produced color
images by passing light through a "modulated" oil film on a glass plate.
The oil film was "deformed" by a scanning electron beam to make the
pictures, but the beam was also modulated by high frequency RF
to make color.
By varying the RF frequency, "tunable diffraction gratings" were created
in the oil film which was capable of making all
colors visible to the human eye.
Unlike the Eidefor color system which used three projection light units
and required tedious registration and color balancing, the GE
needed only one and was comparatively simple to set up and operate.
So it's not the first time diffraction gratings have been used to make
color TV pictures.
albert.e.manfredi@xxxxxxxxxx wrote:
This new display concept uses tunable diffraction gratings, maybe a couple or more dedicated to each pixel of the display, to create color images from all colors of the rainbow. The gratings are tiny, made of a rubbery substance that flexes by applying different voltages to it.
Will this make images from existing RGB-based displays look like cartoon colors?
Bert
http://www.digitaltvdesignline.com/shared/article/showArticle.jhtml?articleId=192201780
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