Patent ID: 8585228

Claim:
An apparatus comprising: an electronic computer system having a panel; a light source configured to generate a light output; and an overlay window coupled to the panel of the system, the overlay window comprising a transparent material, the transparent material having a first surface facing the light source and a second surface facing away from the light source to define a viewing side, an opaque material disposed on the first surface and partially covering the first surface to define an uncovered surface area forming a viewing window, a first diffusing mechanism disposed on the first surface along the uncovered surface area, a second diffusing mechanism disposed on a portion of the second surface corresponding to the viewing window, wherein the light output has a first dispersion angle at the first surface of the overlay window and a wider dispersion angle at the second surface of the overlay window so that a viewing angle of the light output from the viewing side of the overlay window is up to about 180 degrees.