The percentage of cars using a projection type headlamp is growing quickly. Lens diameters of 40mm, 60mm, and 70mm are being used in combination with halogen bulbs and gas discharge lamps.The signal image of such projection systems can be improved by increasing the light emitting area with additional optics around the lens. This results in a more comfortable appearance of the headlamps from the viewpoint of oncoming cars. Different optical elements, e.g. Fresnel lenses, prisms, segmented reflectors, are used.A large set of existing projection systems with additional optics around the projection lens is examined and rated by test persons regarding glare, size of the signal image and homogeneity. Also luminance measurements are presented. The correlation between these results are discussed and recommendations for the deign of signal enhancements are given.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Signal Image Enhancement of Projection Type Headlamps by Additional Optics


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Boebel, Doris (Autor:in) / Fröhlich, Heike (Autor:in) / Weinhold, Henning (Autor:in)

    Kongress:

    SAE 2001 World Congress ; 2001



    Erscheinungsdatum :

    2001-03-05




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Signal image enhancement of projection type headlamps by additional optics

    Weinhold,H. / Boebel,D. / Froehlich,H. et al. | Kraftfahrwesen | 2001


    2001-01-0455 Signal Image Enhancement of Projection Type Headlamps by Additional Optics

    Weinhold, H. / Boebel, D. / Frohlich, H. et al. | British Library Conference Proceedings | 2001




    New Investigation of the Subjective Glare Effect of Projection Type Headlamps

    Rosenhahn, E-O. / Lampen, M. / Society of Automotive Engineers | British Library Conference Proceedings | 2004