Vacuum fluorescent indicator

Details Vacuum fluorescent indicator Vacuum fluorescent indicator

H - Electricity

01

J

313/82

H01J 7/42 (2006.01)

Patent

CA 1108216

VACUUM FLOURESCENT INDICATOR Abstract of the Disclosure A vacuum fluorescent display has a filament heated below incandescence and phosphor coated anodes. A foraminous charge-control electrostatic lens between the filament and the viewer both controls uniform illumination of the anodes and also comprises part of a contrast-enhance- ment element. An embodiment of the in- vention with a linear array of anodes and an analog-to-digital power supply forms a linear scale indicator.

354539

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