An HUD includes a housing that accommodates a light modulation unit that spatially modulates light emitted by a light source; a projection optical system that is accommodated in the housing and projects the light that has been spatially modulated onto a windshield of a vehicle 1 through an opening portion of the housing; a cover that closes the opening portion; a protection member that is movable and is for protecting the cover; a driving unit that drives the protection member; and an object detecting unit that detects an object approaching a front surface of the cover. The driving unit moves the protection member to a position above the cover and causes the protection member to cover the cover when the object detecting unit detects an object, and the driving unit leaves the protection member retracted from the position above the cover to expose the cover when the object detecting unit does not detect an object.


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    Title :

    Projection display device, and operation method and operation program for projection display device


    Contributors:

    Publication date :

    2021-11-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung