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    • 49. 发明授权
    • Catadioptric optical system and image pickup apparatus having the same
    • 反折射光学系统和具有其的摄像装置
    • US08947774B2
    • 2015-02-03
    • US13401999
    • 2012-02-22
    • Masatsugu Nakano
    • Masatsugu Nakano
    • G02B17/00G02B17/08
    • G02B17/0808G02B17/0856
    • A catadioptric optical system includes a first imaging optical system that includes a catadioptric part that collects a light beam from an object to form an intermediate image of the object, and a second imaging optical system that includes a refractive part that images the intermediate image on an image plane. The first imaging optical system includes a first optical element, a second optical element, and a negative lens in an optical path between the first and second optical elements, and the first and second optical elements are disposed so that reflection parts of the first and second optical element face each other. A power φn of the negative lens, radii of curvature R1n and R2n of lens surfaces of the negative lens at an object side and an image side, respectively, and a power φ1 of the first imaging optical system are appropriately set.
    • 反折射光学系统包括:第一成像光学系统,其包括收集来自物体的光束以形成物体的中间图像的反射折射部分;以及第二成像光学系统,其包括在中间图像上成像的折射部分 图像平面 第一成像光学系统包括在第一和第二光学元件之间的光路中的第一光学元件,第二光学元件和负透镜,并且第一和第二光学元件设置成使得第一和第二光学元件的反射部分 光学元件彼此面对。 分别在物体侧和像侧的负透镜的功率&phnn,负透镜的透镜表面的半径R1n和R2n以及第一成像光学系统的功率& 1被适当地设定。
    • 50. 发明授权
    • Catadioptric optical element and optical system including same
    • 反折射光学元件和包括其的光学系统
    • US08947773B2
    • 2015-02-03
    • US13492167
    • 2012-06-08
    • Masatsugu Nakano
    • Masatsugu Nakano
    • G02B17/00
    • G02B17/084G02B21/04
    • A catadioptric lens comprises, a first surface configured to introduce a ray within the catadioptric lens; and a second surface, with a reflective film, configured to reflect the introduced ray to the first surface; the second surface having a first reflection area and a second reflection area surrounded by the first reflection area, wherein the ray, which has been introduced from the first surface and has traveled to the first reflection area, is reflected on the first reflection area by total internal reflection, and the ray, which has been introduced from the first surface and has traveled to the second reflection area, is reflected by the reflective film.
    • 反射折射透镜包括:第一表面,被配置为将光线引入反射折射透镜内; 以及具有反射膜的第二表面,被配置为将引入的光线反射到第一表面; 所述第二表面具有由所述第一反射区域包围的第一反射区域和第二反射区域,其中已经从所述第一表面引入并已经行进到所述第一反射区域的所述光线在所述第一反射区域上被反射总计 内反射,并且从第一表面引入并且已经行进到第二反射区域的光线被反射膜反射。