Vacuum fluorescent display device with circular polarizer

Details Vacuum fluorescent display device with circular polarizer Vacuum fluorescent display device with circular polarizer

1976-10-14

1978-07-11

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313111, 313112, 350156, H01J 172, H01J 6306, G02B 2728

Patent

active

041004558

ABSTRACT:
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-enhancement element. An embodiment of the invention with a linear array of anodes and an analog-to-digital power supply forms a linear scale indicator.

REFERENCES:
patent: 3668466 (1972-06-01), Shimada
patent: 3682531 (1972-08-01), Jeffers
patent: 4004186 (1977-01-01), Bylander
patent: 4007396 (1977-02-01), Wisbey et al.

Affiliated with

Also associated with

Rating

Vacuum fluorescent display device with circular polarizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum fluorescent display device with circular polarizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum fluorescent display device with circular polarizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-264443