To provide an image projection device with which it is possible to effectively suppress the temperature rise of an image irradiation unit due to external light while maintaining the quality of a projected image.SOLUTION: Provided is an image projection device comprising: an image irradiation unit (10) for radiating irradiation light that includes an image; a first free-form surface mirror (20) for reflecting irradiation light that enters from the image irradiation unit (10); an intermediate mirror (30) for reflecting irradiation light that enters from the first free-form surface mirror (20); a second free-form surface mirror (40) for reflecting irradiation light that enters from the intermediate mirror (30) and letting it reach a viewpoint (60). The irradiation light reflected by the first free-form surface mirror (20) is formed into an image for at least one of its components in the image-forming axis directions at an intermediate image forming position before reaching the second free-form surface mirror (40), with the intermediate mirror (30) arranged at the intermediate image forming position.SELECTED DRAWING: Figure 2

    【課題】投影される画像の品質を維持しながら、外光による画像照射部の温度上昇を効果的に抑制することが可能な画像投影装置を提供する。【解決手段】画像を含んだ照射光を照射する画像照射部(10)と、画像照射部(10)から入射した照射光を反射する第1自由曲面ミラー(20)と、第1自由曲面ミラー(20)から入射した照射光を反射する中間ミラー(30)と、中間ミラー(30)から入射した照射光を反射して視点(60)に到達させる第2自由曲面ミラー(40)を備え、第1自由曲面ミラー(20)で反射された照射光は、第2自由曲面ミラー(40)に到達する前の中間結像位置において、少なくとも一つの結像軸方向の成分が結像され、中間ミラー(30)は、中間結像位置に配置されている画像投影装置。【選択図】図2


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    Titel :

    IMAGE PROJECTION DEVICE


    Weitere Titelangaben:

    画像投影装置


    Beteiligte:

    Erscheinungsdatum :

    2022-10-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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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