Patent ID: 6240664
Filing Date: 2001-06-05
Classification: G02B,Y10S

Abstract:
A sign plate for an edge-illuminated sign, the sign plate comprising:a transparent sheet comprising a front face, a rear face and a transparent edge that connects said front face to said rear face, wherein said transparent edge is structured so that when said transparent edge receives light externally of said sign plate said transparent edge transmits said external light along said transparent sheet,a front image layer disposed on front face of said transparent sheet, wherein said front image layer comprises a reflective surface,a rear image layer disposed on a rear face of said transparent sheet substantially in registry with said front image layer, wherein said front image layer and said rear image layer are positioned so that when light is received externally of said sign plate and within said transparent sheet is reflected from said reflective surface onto said rear image layer thereby to enhance illumination of said rear image layer,a substantially opaque backing sheet located rearwardly of said rear face of said transparent sheet, wherein said backing sheet substantially overlaps said rear face of said transparent sheet entirely and a front face of said backing sheet is spaced from said rear face of said transparent sheet;wherein said sign plate has a structure such that when a portion of light is received externally of said sign plate and within said transparent sheet an image of a halo or aura light is formed surrounding said rear image layer.