The lighting device includes a control circuit performing dimming control of dimming a light source device according to a desired dimming level. In the dimming control, the control circuit sets a desired current value of amplitude control to a value corresponding to the desired dimming level, and set a desired duty cycle of pulse width modulation control to a predetermined value associated with a dimming subrange containing the desired dimming level, of multiple different dimming subranges of a total dimming range of the light source device. The predetermined value is a duty cycle allowing luminance of the light source device to be equal to upper limit luminance of the associated dimming subrange under a condition where the current value of the current of the light source device is a maximum value.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Lighting device, vehicle illumination device, and vehicle


    Beteiligte:
    FUKUI TAKAHIRO (Autor:in) / TAKAMATSU MASAAKI (Autor:in) / KATO KAZUYA (Autor:in)

    Erscheinungsdatum :

    18.04.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / F21Y Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend die Form oder die Art der Lichtquellen oder die Farbe des emittierten Lichts , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H05B ELECTRIC HEATING , Elektrische Heizung



    LIGHTING DEVICE, VEHICLE ILLUMINATION DEVICE, AND VEHICLE

    FUKUI TAKAHIRO / TAKAMATSU MASAAKI / KATO KAZUYA | Europäisches Patentamt | 2017

    Freier Zugriff

    VEHICLE ILLUMINATION DEVICE AND VEHICLE LIGHTING DEVICE

    MORI KEI / KOSUGI HIROSHI | Europäisches Patentamt | 2023

    Freier Zugriff

    VEHICLE ILLUMINATION DEVICE AND VEHICLE LIGHTING DEVICE

    UENO MISAKI | Europäisches Patentamt | 2023

    Freier Zugriff

    LIGHTING DEVICE, ILLUMINATION CONTROL SYSTEM, ILLUMINATION APPARATUS AND VEHICLE

    FUKUDA KENICHI / KISHIMOTO AKIHIRO / NAKAMURA TOSHIAKI et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    Vehicle lighting device capable of guaranteeing illumination intensity

    TANG JI | Europäisches Patentamt | 2021

    Freier Zugriff