A light projection (1) device that can change a light projection pattern is provided. The light projection device includes: a plurality of excitation light sources (10) that emit excitation light; a fluorescent member (22) that is excited by the excitation light from the excitation light sources; a control portion (31) that controls outputs of the excitation light sources(10); and a light projection member (23, 25) that projects light emitted from the fluorescent member (22). The fluorescent member includes a plurality of application regions (22a; S121, S122, S123, S124) to which the excitation light is applied, and the control portion (31) controls the outputs of the excitation light sources (10) so as to individually control the excitation states of the application regions (22a; S121, S122, S123, S124).


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    Title :

    Light projection device and light guide member used in same


    Additional title:

    Lichtprojektionsvorrichtung und darin verwendetes Lichtleiterelement
    Dispositif de projection de lumière et élément de guidage de lumière utilisé dans celui-ci


    Contributors:

    Publication date :

    2020-04-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / F21W Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend den Gebrauch oder Einsatz von Leuchten oder Beleuchtungssystem , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K,  F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / 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



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