Screen having a layer of reflectors
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United States of America Patent
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-
Mar 25, 2008
Grant Date -
Jun 16, 2005
app pub date -
Nov 8, 2004
filing date -
Oct 28, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reflector comprises a core and a first dielectric mirror formed over at least a portion of the core to reflect light having a preselected wavelength. The reflector may comprise a plurality of dielectric mirrors formed concentrically over the first dielectric mirror to reflect light having the preselected wavelength. The multiple dielectric mirrors may have different diffraction indices. A layer of such reflectors deposited onto the reflective surface of a projection screen may enhance the reflective selectivity of the screen to the preselected wavelength. Reflectors formed to reflect different wavelengths may be deposited onto the reflective surface to enhance selectivity to the different wavelengths and minimize reflection of ambient light.
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