Abstract
Tinted vehicle windows are commonly used for different
applications, among which are providing privacy, reducing
transmitted sunlight in hot climates, and sometimes just for
aesthetics among other uses. The work reported here was geared
towards retaining these traditional aspects of tinted vehicle
windows while adding a new display aspect component for custom
display applications. We applied a low cost dual purpose diffusely
transmitting and diffusely reflective pattern onto a polyvinyl
chloride (PVC) plastic film. This custom-patterned film was then
applied to both transparent and conventionally tinted vehicle window
glass to observe the change in image quality projected onto them.
For image projection we used a low cost VGA resolution, 45 lum
liquid crystal on silicon (LCoS) Pico projector. Images were
observed and recorded under the same ambient light environment. The
field results showed significantly improved perceptibility with
200:1 contrast ratio, on tinted vehicle windows augmented with our
custom pattern printed film. Whereas images projected on surfaces
without the custom patterned film were literally
imperceptible.
© 2011 IEEE
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