Illumination – Illuminated scale or dial
Patent
1995-02-21
1996-08-06
Gromada, Denise L.
Illumination
Illuminated scale or dial
362 30, 362326, 362339, 200313, 200314, G01D 1128
Patent
active
055440193
ABSTRACT:
An improved display system includes a selectively energizeable light source which is disposed within a housing. A panel, formed of transparent material, is connected with the housing and has an outer side surface which is exposed to ambient light and an inner side surface which is exposed to light from the light source when the light source is energized. Indicia is disposed between the light source and the panel. The indicia is observable through the panel when the light source is energized and is obscured when the light source is de-energized. An array of pyramidal projections are disposed on the outer side of the panel. The array of pyramidal projections extend across the indicia so that light from the light source passes through the pyramidal projections to enable the indicia to be observed when the light source is energized. The panel is formed of a polymer. The surfaces of the pyramidal projections are repaired by a thin film of a monomer of the same composition as the polymer forming the panel.
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Helstern Robert P.
Lombardo John J.
Tatavoosian Vanacan
Eaton Corporation
Gromada Denise L.
Sember Thomas M.
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