This study examined the effect that hydrophobic treatment of glass headlamp lenses has on light output when headlamps are exposed to contaminants under naturalistic driving conditions. The hypothesis, a priori, was that the water-repelling nature of a glass surface after hydrophobic treatment would aid in minimizing the adhesion, or promote the removal, of contaminants on the lens, thereby leaving light output less affected. Additional variables of interest included the presence of precipitation, the side of the vehicle the headlamp was on, and whether the headlamp was illuminated during the exposure. The study examined vehicles with glass lenses installed as intended by the vehicle manufacturer. The vehicles were driven on a 155-km route under conditions of active precipitation or no precipitation, and with or without the headlamps on. Subsequent to each drive, measurements of light output were made at eight key test points in the headlamp beam pattern. The headlamps were then cleaned and measured again. In this way, each headlamp served as its own control.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Hydrophobic Treatment of Glass Headlamp Lenses and the Effect on Light Output


    Beteiligte:
    J. R. Sayer (Autor:in) / Y. Nakata (Autor:in) / M. L. Mefford (Autor:in)

    Erscheinungsdatum :

    2002


    Format / Umfang :

    27 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Automated application of silicone glass like coatings for polycarbonate headlamp lenses

    Mokerjii, S. / Warchol, F. / Scranton, J. | Tema Archiv | 1991


    Automated application of silicone glass like coatings for polycarbonate headlamp lenses

    Scranton,J. / Mokerji,S. / Warchol,F. et al. | Kraftfahrwesen | 1991


    Automated Application of Silicone Glass Like Coatings for Polycarbonate Headlamp Lenses

    Warchol, Frank / Scranton, Joe / Mokerji, Subrata | SAE Technical Papers | 1991


    The advent of polymer projector headlamp lenses

    Luce, Thomas / Schalle, Erik / Ziegler, Norbert | Tema Archiv | 2009