A retro-focus type imaging-optical system is disclosed. The imaging-optical system comprises, in order from an object side to an image side a first lens group, an aperture stop, and a second lens group. The first lens group includes, in order from the object side, a positive first F lens group and a negative first R lens group. The first F lens group includes a positive meniscus lens having a convex surface on the object side. The first R lens group includes a negative meniscus lens having a convex surface on the object side and a positive lens. The second lens group includes, in order from the object side, a positive second F lens group and a second R lens group, and the second F lens group includes a positive lens element having a convex meniscus shape on the image side.


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    Title :

    IMAGING-OPTICAL SYSTEM, STEREO CAMERA APPARATUS, AND IN-VEHICLE CAMERA APPARATUS


    Contributors:

    Publication date :

    2015-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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