Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1990-04-13
1991-08-27
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
340781, G09G 330
Patent
active
050436325
ABSTRACT:
A TFEL edge emitter structure with an EL stack having a linear array of spaced-apart pixels with front edge faces emitting light of non-uniform intensity from different regions has an uniform light emission filter provided across the light-emitting faces of the pixels. The filter takes the form of an exposed photographic emulsion coated directly to the light-emitting faces of the pixels. Alternatively, the filter takes the form of a separate substrate containing the exposed photographic emulsion mounted across the light-emitting faces of the pixels. The exposed emulsion is darker at regions thereof which correspond to regions of the light-emitting edge faces of the pixels with higher original light intensity and lighter at regions thereof which correspond to regions of the light-emitting edge faces of the pixels with lower original light intensity. The final exposed emulsion reduces the original non-uniform intensity of the light from the different regions of the pixel light-emitting faces to an uniform level equal to that of the lowest original light intensity of the pixel light-emitting faces. A focussing lens can be combined with the edge emitter structure. The filter emulsion is exposed so as to compensate not only for non-uniformity of light intensity of the structure but also for optical non-uniformities of the lens.
REFERENCES:
patent: 3659149 (1972-04-01), Fleming
patent: 3710181 (1973-01-01), Tanaka et al.
patent: 4001619 (1977-01-01), Endriz et al.
patent: 4006383 (1977-02-01), Luo et al.
patent: 4044345 (1977-08-01), Ueda et al.
patent: 4110664 (1978-08-01), Asars et al.
patent: 4464602 (1984-08-01), Murphy
patent: 4535341 (1985-08-01), Kun et al.
patent: 4734723 (1988-03-01), Ishitobi
patent: 4807047 (1989-02-01), Sato et al.
patent: 4874986 (1989-10-01), Menn et al.
patent: 4877995 (1989-10-01), Thioulouse et al.
patent: 4882517 (1989-11-01), Maruyama et al.
patent: 4885448 (1989-12-01), Kasner et al.
patent: 4899184 (1990-02-01), Leksell et al.
patent: 4951064 (1990-08-01), Kun et al.
Asars Juris A.
Leksell David
LaRoche Eugene R.
Westinghouse Electric Corp.
Williamson John K.
Yoo Do Hyun
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