Dual Waveguide Display System Using Unpolarized Light for Color Separation
The colored dual waveguide display system uses unpolarized light that is visible as equal left- and right-rotating components. By designing a coupled grating (where the liquid crystal molecules rotate in two layers in opposite directions but with periodic preservation), the left- and right-rotating light are diffracted and reflected in different directions. A dual display can be achieved with just one color source. This structure has three advantages:
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