Lighting and/or indicating apparatus for use in foggy conditions

Details Lighting and/or indicating apparatus for use in foggy conditions Lighting and/or indicating apparatus for use in foggy conditions

1993-03-31

1994-09-20

Kwon, John T.

Electric lamp and discharge devices: systems

Special application

Vehicle

315156, 307 108, 362 80, B60Q 102

Patent

active

053492676

ABSTRACT:
A lighting and indicating apparatus for a motor vehicle, for use in poor visibility. The unit includes a fog lamp and apparatus for automatically detecting the presence of poor visibility. The control system for automatic control of the lighting and indicating apparatus includes a humidity detecting circuit and an optical visibility detecting circuit, the outputs from which are combined by a combining circuit, the combined signal then being processed so as to control lighting or extinction of the fog lamp.

REFERENCES:
patent: 3283297 (1966-11-01), Pfennighausen et al.
patent: 4102426 (1978-07-01), Walden
patent: 4728861 (1988-03-01), Kurihara et al.
patent: 5039869 (1991-08-01), Willikens
patent: 5143437 (1992-09-01), Matsuno et al.

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