Abstract: A lamp panel provides a light source employing dual light producing mechanisms. Specifically, electroluminescence produces a source light which is passed through a translucent fluorescent filter that modifies the color spectrum to a desired color. The use of dual light producing mechanisms allows optimization of electroluminescent lamp durability and luminesce without regard to the final color desired. The light from the optimized EL lamp is converted to any desired color using an appropriate fluorescent pigment or mixture of fluorescent pigments.

Abstract: In a display apparatus using projected illumination for display elements, a translucent fluorescent filter is disposed between the light source and the display element. The filter modifies the visible spectrum of light illuminating the display element. A single light source can be used to achieve a color that is not present or is very low in the original source without added complexity in a control panel. Acceptable luminance levels are achieved in multi-colored control panels with a single light source.