Fluorescent lamps with imprinted color logos and method of makin

Details Fluorescent lamps with imprinted color logos and method of makin Fluorescent lamps with imprinted color logos and method of makin

1994-06-29

1996-09-03

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313514, H01J 162

Patent

active

055526640

ABSTRACT:
A fluorescent lamp having a logo, design or graphic information formed thereon. The glass envelope of the lamp is provided internally thereof with a coating of pigmented layer superimposed with a layer of a reflective material and one or more layers of a fluorescent material to generate the desired colored light when the lamp is energized. The logo or design is laser engraved onto the glass envelope of the lamp is a manner to ablate the respective layers of material wherever the laser beam engages the glass envelope. The arrangement is such that when the lamp is energized, the logo or design will be illuminated in the color of the light generated by the fluorescent material associated with the logo or design. In one form of the invention, multiple color light is generated by layering multiple coatings of fluorescent material internally of a lamp wherein each layer of fluorescent material will generate light of different colors. In another form, the various color light is produced by a plurality of fluorescent bands formed internally of the lamp, each band being formed by a different fluorescent material.

REFERENCES:
patent: 1963964 (1934-06-01), Barclay
patent: 2129780 (1938-09-01), Nickel
patent: 2854600 (1958-09-01), Weijer et al.
patent: 3225241 (1965-12-01), Spencer et al.
patent: 3717781 (1973-02-01), Sadoski et al.
patent: 3886396 (1975-05-01), Hammer et al.
patent: 3912828 (1975-10-01), Olwert
patent: 4061946 (1977-12-01), Schreurs

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