A scanning light source includes a semiconductor light source, and scans an instantaneous illumination spot based on the output light of the semiconductor light source in the horizontal direction of the light distribution. A lighting circuit is capable of providing multi-gradation dimming of the amount of light provided by the semiconductor light source at each scanning position in synchronization with the scanning of the scanning light source. The lighting circuit is switchable between the first mode in which the semiconductor light source is controlled by pulse width modulation with a duty cycle that corresponds to the dimming ratio and the second mode in which the semiconductor light source is turned off over the number of cycles that corresponds to the dimming ratio.


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    Title :

    VEHICLE LAMP AND ILLUMINATION METHOD


    Contributors:
    KAMIYA MISAKO (author) / OYAMA SANAE (author)

    Publication date :

    2023-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / H05B ELECTRIC HEATING , Elektrische Heizung



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