To improve the mountability of a head-up display onto a vehicle while suppressing luminance unevenness of images output from a spatial modulation element.SOLUTION: The projection device includes: a plurality of light sources arranged in a first direction; a spatial modulation element that outputs incident light after modulating into image information; a lens that changes the optical path of light emitted from each light source so that the light emitted from each of the plurality of light sources reaches the same area of the incidence plane of the spatial modulation element; and a first reflection optical member that deflects the light emitted from the lens toward the spatial modulation element. The first reflection optical member has a shape that reflects light so that the light emitted from the lens is incident at a reference incident angle at any point on the plane of incidence which is a predetermined point of the spatial modulation element.SELECTED DRAWING: Figure 2

    【課題】空間変調素子が出射する画像の輝度ムラを抑制しつつ、車両に対するヘッドアップディスプレイの搭載性を向上させる。【解決手段】投影装置は、第1方向に配置される複数の光源と、入射した光を画像情報に変調して出射する空間変調素子と、複数の光源のそれぞれから出射される光が空間変調素子の入射面の同一領域に到達するように各光源から出射される光の光路を変化させるレンズと、レンズから出射された光を空間変調素子に向けて偏向する第1反射光学部材とを備え、第1反射光学部材は、空間変調素子の入射面の任意の点に対して予め定められた基準入射角度で、レンズから出射される光が入射するように光を反射させる形状を有する。【選択図】図2


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    Title :

    PROJECTION DEVICE AND HEAD-UP DISPLAY


    Additional title:

    投影装置及びヘッドアップディスプレイ


    Contributors:

    Publication date :

    2020-12-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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