Illumination – Elongated source light unit or support – With or including transparent or translucent member
Patent
1989-05-05
1990-06-12
Lazarus, Ira S.
Illumination
Elongated source light unit or support
With or including transparent or translucent member
362307, 362308, 362311, 362328, 362343, F21S 302
Patent
active
049338218
ABSTRACT:
An illuminator adapted to be illuminated by a fluorescent lamp mounted in a light fixture when the fluorescent lamp is emitting light to indicate that the fluorescent light is turned on. The light fixture is of the type having a fixture casing for holding the fluorescent lamp and including a specular reflector for reflecting the light emitted from the lamp generally downwardly toward an area to be illuminated without the light passing through a light diffuser. The illuminator comprises a generally transparent or translucent illuminator body, and illuminator-mounting flanges adapted for mounting the illuminator body on the fixture casing or reflector without the body interferring with or intersecting light transmitted generally directly downwardly toward the area to be illuminated. The body includes material having such an index of refraction and surfaces so contoured that a portion of the light originating from the fluorescent lamp is refracted at a sharp angle (e.g., greater than 55-65 degrees) with respect to the light reflected generally downwardly by the reflector to indicate to viewers along the sharp angle that the light is turned on.
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Bauer Stephen W.
Haearman Sue
Kirn Walter N.
Lazarus Ira S.
Minnesota Mining and Manufacturing Company
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