Screen having a layer of reflectors

Details Screen having a layer of reflectors Screen having a layer of reflectors

2004-11-08

2008-03-25

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural reflecting areas

C359S454000, C359S601000, C359S614000, C359S615000, C359S893000, C349S114000

Reexamination Certificate

active

07349155

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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