LIGHT EMISSIVE DISPLAY BASED ON LIGHTWAVE COUPLING IN COMBINATION WITH VISIBLE LIGHT ILLUMINATED CONTENT

摘要

A display with a first emissive image and a second image. The display includes a waveguide that includes an image formed from photoluminescent dyes on a surface of the waveguide which is activated by a first light source. A second light source behind said waveguide produces a second image. A light filter is positioned between the waveguide and the second light source. The second light source can illuminate a transparency, such as a translight, or a physical object providing an image that is viewable from the display when the second light source is illuminated and the first light source is not illuminated. The first image is viewable when the first light source associated with the waveguide is activated, emitting, for example, an ultraviolet light that activates the photoluminescent dyes, causing the first image to be viewable. The light filter behind the waveguide enhances the quality of the emissive image and prevents the image on the transparency or the physical object from being seen when the second light source is not illuminated.

主权项

1. A display comprising:
a waveguide, said waveguide having a photoluminescent image optically coupled to a surface of said waveguide; a first light source associated with said waveguide, said first light source adapted to transmit light at a wavelength less than 450 nm through said waveguide, causing said photoluminescent image to emit visible light; a second light source wherein a light filter is between said second light source and said waveguide; wherein said second light source is adapted to display a second image through said display when said second light source is illuminated.