Electroluminescent illumination for a magnetic compass

Details Electroluminescent illumination for a magnetic compass Electroluminescent illumination for a magnetic compass

2006-02-21

2006-02-21

O'Shea, Sandra (Department: 2875)

Illumination

Light source or light source support and luminescent material

C362S109000, C362S253000

Reexamination Certificate

active

07001036

ABSTRACT:
An illumination device for a magnetically sensitive instrument comprising a magnetically sensitive instrument, preferably a magnetic compass needle, and an electroluminescent device comprising an electroluminescent panel positioned behind and facing the magnetically sensitive instrument such that when the electroluminescent panel is activated, the magnetically sensitive instrument is illuminates by the electroluminescent light. The device is powered by a battery and further comprises a driver circuit to control the electroluminescent panel and switching means to engage and disengage the battery for selective operation of the light source.

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Merriam-Webster's Collegiate Dictionary, 10thed., pp. 414-415.

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