Rapid improvement in light emitting diode (LED) performance and an annual multibillion dollar lighting market is motivating worldwide development of LED based illumination systems. In addition to the traditional figures of merit of efficiency and high flux density, the white LED lamps must also have appropriate color characteristics. Current commercial white LED lamps have undesirable color temperatures and uniformity, and inferior color rendering. As discussed below, color uniformity in single phosphor lamps has been improved by deposition of thin uniform phosphor layers conformal to the LED die. Also, 2-phosphor LED lamps with white color characteristics typical of conventional incandescent and halogen sources are described. Furthermore, LED illumination offers additional features not practically achievable with conventional sources.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The LED lightbulb: are we there yet? progress and challenges for solid state illumination


    Beteiligte:
    Holcomb, M.O. (Autor:in) / Mueller-Mach, R. (Autor:in) / Mueller, G.O. (Autor:in) / Collins, D. (Autor:in) / Fletcher, R.M. (Autor:in) / Steigerwald, D.A. (Autor:in) / Eberle, S. (Autor:in) / Lim, Y.K. (Autor:in) / Martin, P.S. (Autor:in) / Krames, M. (Autor:in)


    Erscheinungsdatum :

    01.01.2003


    Format / Umfang :

    573299 byte



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    LED LIGHTBULB FOR VEHICLE

    Europäisches Patentamt | 2017

    Freier Zugriff

    VEHICLE HEADLIGHT DEVICE HAVING AN EJECTABLE AND REPLACEABLE LIGHTBULB ASSEMBLY

    APARO JAMES M | Europäisches Patentamt | 2021

    Freier Zugriff

    Vehicle Headlight Assembly Having An Ejectable And Replaceable Lightbulb

    APARO JAMES M | Europäisches Patentamt | 2020

    Freier Zugriff

    Vehicle headlight assembly having an ejectable and replaceable lightbulb

    APARO JAMES M | Europäisches Patentamt | 2021

    Freier Zugriff

    Vehicle headlight device having an ejectable and replaceable lightbulb assembly

    APARO JAMES M | Europäisches Patentamt | 2021

    Freier Zugriff