PROBLEM TO BE SOLVED: To provide an image projection device that suppresses a reduction in visibility when projecting an image while changing a focal distance.SOLUTION: An image projection device comprises: a first projection part that can project an image with a first projection optical system; a second projection part that can project an image with a second projection optical system; a first projection mode in which the first and second projection parts project images at a first focal distance f1; and a second projection mode in which the first projection part projects an image at the first focal distance f1 and the second projection part projects an image at a second focal distance f2. When the first projection mode is switched to the second projection mode, the first focal distance f1 of the first projection part is temporarily changed to an intermediate focal distance fc, and the second focal distance f2 of the second projection part is changed to the intermediate focal distance fc.SELECTED DRAWING: Figure 8

    【課題】焦点距離を変化させて画像を投射する際の視認性の低下を抑制する画像投射装置を提供する。【解決手段】画像投射装置は、第1の投射光学系により画像を投射可能な第1の投射部と、第2の投射光学系により画像を投射可能な第2の投射部と、第1および第2の投射部が第1の焦点距離f1で画像を投射する第1の投射モードと、第1の投射部が第1の焦点距離f1で画像を投射し、第2の投射部が第2の焦点距離f2で画像を投射する第2の投射モードとを有する。第1の投射モードから第2の投射モードに切替わるとき、一旦、第1の投射部の第1の焦点距離f1が中間の焦点距離fcに変化され、第2の投射部の第2の焦点距離f2が中間の焦点距離fcに変化される。【選択図】図8


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    Title :

    IMAGE PROJECTION DEVICE, IMAGE PROJECTION METHOD, AND IMAGE PROJECTION PROGRAM


    Additional title:

    画像投射装置、画像投射方法および画像投射プログラム


    Contributors:

    Publication date :

    2017-07-13


    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 / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS



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