An optical system includes a first optical element including a first reflecting region having a convex shape toward an enlargement side, a second optical element having a reduction-side surface having a convex shape toward the enlargement side, and a third optical element having an enlargement-side surface having a convex shape toward the enlargement side, wherein the reduction-side surface of the second optical element or the enlargement-side surface of the third optical element includes a second reflecting region, wherein the third optical element includes a refracting region having positive power, and wherein light from the enlargement side proceeds to a reduction side sequentially through a refracting region of the first optical element, the second reflecting region, the first reflecting region, a refracting region of the second optical element, and the refracting region of the third optical element.


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    Titel :

    Optical system having refracting surface and reflecting surface, and image capturing apparatus and projection apparatus including the same


    Beteiligte:
    KAJIYAMA KAZUHIKO (Autor:in) / MAEZAWA KOJI (Autor:in)

    Erscheinungsdatum :

    19.01.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion





    OPTICAL SYSTEM, AND IMAGING APPARATUS AND PROJECTION APPARATUS INCLUDING THE SAME

    KAJIYAMA KAZUHIKO / MAEZAWA KOJI | Europäisches Patentamt | 2019

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    PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE HAVING SAME

    ONISHI MICHIHISA / KAWAI KIYOYUKI / HASHIMOTO YOSHIHIRO | Europäisches Patentamt | 2016

    Freier Zugriff