Abstract: A device for presenting multiple illuminated messages and a method for making same. The device includes a uniformly thick panel of transparent material having at least one elongated and continuous passageway therein forming a message to be indicated. The passageway is filled with gas and materials that emit light.
Abstract: A device for providing illumination to a specifically defined region including in combination an extended and diffuse light source and a holographic optical element mounted in spaced relation to said light source, said holographic optical element comprising a layer of holograph adaptable material having formed thereon an array of independent holographic lenses each responsive to selected regions on said light source for directing light collected from said selected regions on said light source to a selected viewing pattern.