PROBLEM TO BE SOLVED: To provide an image display screen with which it is possible to easily constitute a screen and approximately uniformize the brightness of the whole of an image, and a screen used in the image display device.SOLUTION: An image display device 20 comprises a light source for emitting a laser beam, a screen 108 on which an image is drawn by being scanned by the laser beam, a scanning unit for causing the screen 108 to be scanned by the laser beam emitted from the light source, and an optical system for generating a virtual image of the image drawn on the screen 108 by the laser beam having passed through the screen 108. The screen 108 is constituted in such a way that the angle of divergence is constant in a prescribed range W0 at center in a scanning direction (X axis direction) out of a drawing range D10 where an image is drawn, and the angle of divergence in a range W1 on either side except the prescribed range W0 gradually becomes larger toward an end.SELECTED DRAWING: Figure 6

    【課題】スクリーンを容易に構成でき、且つ、画像全体の明るさを均一に近づけることが可能な画像表示装置、および当該画像表示装置に用いるスクリーンを提供する。【解決手段】画像表示装置20は、レーザ光を出射する光源と、レーザ光が走査されることにより画像が描画されるスクリーン108と、光源から出射されたレーザ光をスクリーン108に対し走査させる走査部と、スクリーン108を透過したレーザ光により、スクリーン108に描画された画像の虚像を生成する光学系と、を備える。スクリーン108は、画像が描画される描画領域D10のうち、走査方向(X軸方向)中央の所定範囲W0において、発散角が一定で、且つ、所定範囲W0を除いた両側の範囲W1において、発散角が、端に向かって徐々に大きくなるよう構成されている。【選択図】図6


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    Title :

    IMAGE DISPLAY DEVICE AND SCREEN


    Additional title:

    画像表示装置およびスクリーン


    Contributors:

    Publication date :

    2018-05-17


    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 / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien



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