Abstract
An optically written display based on up-conversion of near-infrared
light is a newly emerging display technology. For filtering out unwanted colors
from this light generator, multilayer dielectric color filters are designed
for red, green, and blue screens, respectively. Layer-symmetric films are
used in the designed filters and the conjugate gradient method is used to
optimize the design. It is observed that the characteristics of the filters
are good in the whole visible wavelength range when the incident angle is
less than 40$^{\circ}$.
The encompassed color triangle of the display with the color filters is larger
than that without the color filters, and images with more saturated colors
are obtained.
© 2008 IEEE
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