Electroluminescent device as a source for a scanner

Details Electroluminescent device as a source for a scanner Electroluminescent device as a source for a scanner

1995-06-07

1997-01-28

Pascal, Robert

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315151, 313498, 313506, 399151, G09G 310

Patent

active

055980678

ABSTRACT:
An electroluminescent device used as an illuminating source in a scanner. The device includes at least one solid-state electroluminescent element, which has a transparent electrode with a top surface, a radiation generating stack under the transparent electrode, and a second electrode with a bottom surface under the radiation generating stack. Radiation is generated from the radiation generating stack when a selected voltage source is coupled across the electrodes. Most of the radiation generated is emitted either from the top surface or from (the top and the bottom surfaces). When the scanner scans a medium, the emitted radiation is substantially uniform at least across the top surface of the transparent electrode to create a uniform radiation source for illuminating the medium.

REFERENCES:
patent: 5043631 (1991-08-01), Kun et al.
patent: 5043632 (1991-08-01), Asars et al.
patent: 5043715 (1991-08-01), Kun et al.
patent: 5118987 (1992-06-01), Leksell et al.
patent: 5384577 (1995-01-01), McLaughlin et al.
patent: 5525866 (1996-06-01), Mueller et al.

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