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.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    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




    Method and system for intelligently adjusting irradiation angle and luminous flux of headlamp of motor vehicle

    WANG KUN / QI LINFENG / LIU JING et al. | European Patent Office | 2025

    Free access

    Automatic automobile headlamp brightness regulating system

    JIN JIALIN | European Patent Office | 2015

    Free access

    Headlamp Luminous Intensity Matrix Adjustment Factors for Modeling Traffic Sign Performance

    Hawkins, H. Gene / Carlson, Paul J. / Chrysler, Susan T. | SAE | 2005


    Lighting device and headlamp for a vehicle with luminous modules and adjustment means

    QUAN JUN / CRASNIER NICOLAS | European Patent Office | 2025

    Free access

    HEADLAMP CONTROL DEVICE, HEADLAMP CONTROL METHOD, AND HEADLAMP SYSTEM

    NAKAJIMA WATARU / KITA YASUSHI / KIMURA TAKAKO et al. | European Patent Office | 2023

    Free access