Vacuum fluorescent display having uniform character brightness

Details Vacuum fluorescent display having uniform character brightness Vacuum fluorescent display having uniform character brightness

H - Electricity

01

J

313/80

H01J 31/12 (2006.01) H01J 31/15 (2006.01)

Patent

CA 1105545

VACUUM FLUORESCENT DISPLAY HAVING UNIFORM CHARACTER BRIGHTNESS ABSTRACT An optical attenuator varying in optical transmission in a systematic fashion, compen- sates for non-uniform illumination of vacuum fluorescent characters due to filament vol- tage drop.

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