Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1995-11-03
1997-07-08
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313509, 313506, 40544, H01J 162
Patent
active
056464819
ABSTRACT:
An EL lamp having a transparent front electrode is overprinted with an opaque graphic having the same color as the phosphor in the lamp. A translucent coating over the graphic is clear or tinted. The graphic is visible only when the lamp is lit. In an alternative embodiment of the invention, a second graphic, visible whether or not the lamp is lit, is overprinted on the lamp. The second graphic has a color perceptibly different from the color of the phosphor and is opaque, transparent, or any opacity between opaque and transparent.
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"A guide to Understanding Color Communication", published by X-Rite, Incorporated, 1993.
"A guide to Understanding Color Tolerancing", published by X-Rite, Incorporated, 1993.
O'Shea Sandra L.
Patidar J. M.
Wille Paul F.
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