The invention relates to a small, lightweight, highly efficient portable device for regulating the luminous flux output of a battery powered headlamp. Wildland firefighters use a hard-hat mounted headlamp to provide illumination for night fire suppression activities. It is desirable to have the headlamp and battery both located on the hard-hat to eliminate the need for an interconnecting cord which could entangle in brush. The headlamp and battery must be lightweight so as to not burden the firefighter and the battery must contain sufficient energy to power the headlamp for a complete night shift. Also, the light output must remain sufficient to provide adequate illumination for safe working conditions.


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    Title :

    Device for Regulating Luminous Flux of Battery Powered Headlamp


    Contributors:

    Publication date :

    1989


    Size :

    12 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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