Laminated filter-electroluminescent recitular index for cathode

Details Laminated filter-electroluminescent recitular index for cathode Laminated filter-electroluminescent recitular index for cathode

1978-02-17

1979-03-06

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

313462, 313463, 358252, H04N 572

Patent

active

041434048

ABSTRACT:
An optical filter possessing narrow pass band characteristics selectively absorbs impinging ambient white light components and is used in combination with a laminate graticule having transparent electrodes lying in a common plane for defining a multiplicity of electrically insulating gaps in the pattern of the graticule for exciting associated partially over-lying electroluminescent phosphor patterns. The graticule pattern being composed of an electroluminescent material, night viewing of the graticule is readily accomplished by electrically exciting it. For daylight viewing, the unexcited phosphor material is itself directly viewed.

REFERENCES:
patent: 3496295 (1970-02-01), Pohle
patent: 3946267 (1976-03-01), Lustig

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