A predetermined lighting pattern (E) is projected on a surface to be illuminated (U) such as a road surface, a ground surface, a floor surface, a surface below water, and a wall surface, and the lighting pattern (E) is displaced on the surface to be illuminated (U). A laser beam (L1) generated by a laser light source (110) is broadened by a magnifying lens (120) so as to generate a divergent light (L2). The divergent light is shaped by the collimation lens (130) into a parallel illumination light (L3), and the parallel illumination light is caused to be incident on an incident plane (Q) of a diffraction optical element (140) which records a hologram image. A diffracted light (L4) from the diffraction optical element (140) forms the lighting pattern (E) as a hologram reconstructed image on the surface to be illuminated (U). By translating the collimation lens (130) by a collimation-lens drive unit (150) along a movement plane (P) that is orthogonal to an optical axis (C) of the laser beam (L1), the lighting pattern (E) can be displaced on the surface to be illuminated (U).


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    Titel :

    ILLUMINATION DEVICE


    Weitere Titelangaben:

    BELEUCHTUNGSVORRICHTUNG
    DISPOSITIF D'ÉCLAIRAGE


    Beteiligte:

    Erscheinungsdatum :

    2020-08-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / 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 / 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 / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G03H Holografische Verfahren oder Vorrichtungen , HOLOGRAPHIC PROCESSES OR APPARATUS



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