Integral lamp for tri-color picture element

Details Integral lamp for tri-color picture element Integral lamp for tri-color picture element

H - Electricity

01

J

313/4, 313/80

H01J 61/32 (2006.01) H01J 61/35 (2006.01) H01J 61/42 (2006.01) H01J 61/94 (2006.01)

Patent

CA 1305997

D-87-1-014 PATENT ABSTRACT A tri-color lamp for use as an element in the optical presentation of information. The lamp includes a sealed envelope having a common envelope member and a plurality (e.g., three) of longitudinally extending leg members. A common electrode is located within the common envelope member and is spacedly located from opposing electrodes located within each of the leg members. A phosphor layer within the sealed envelope subtends at least the major body portion of each of the leg members such that the surface brightness of the phosphor layer as viewed through the end portions of the lamp is greater than the intensity of the external surface brightness of the phosphor layer on the major body portion. In the presentation of color information, each of the leg members is coated with respective phosphors emitting the primary colors red, green and blue.

570018

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