Illumination – Illuminated scale or dial – Edge illuminated modifier or light rod/pipe
Patent
1989-08-24
1993-10-26
Oberley, Alvin E.
Illumination
Illuminated scale or dial
Edge illuminated modifier or light rod/pipe
362 23, 362 30, 116286, G01D 1128
Patent
active
052571670
ABSTRACT:
An improved vehicle display apparatus in which both the display and pointer are illuminated for low ambient driver viewing by a single electroluminescent (EL) lamp mounted on the rear face of the display. A generally opaque applique includes a translucent region in registry with the active area of the EL lamp, and bright opaque graphic symbols painted or deposited onto a surface of the applique within the translucent region. A pointer disposed in proximity to the front surface of the applique is provided with juxtaposed bright opaque and transparent regions. In high ambient lighting conditions when the EL lamp is not lit, a viewer of the display perceives the bright opaque graphic symbols and pointer stripes against the relatively dark translucent background regions of the applique. In low ambient lighting conditions when the EL lamp is lit, the viewer perceives the opaque graphic symbols and pointer stripes in silhouette against the relatively bright translucent regions of the applique and pointer, respectively.
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Road & Track, Nissan Maxima SE, Apr. 1989, pp. 146-148.
Delco Electronics Corporation
Navarre Mark A.
Nguyen Chanh
Oberley Alvin E.
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