Zoom lens
    2.
    发明公开
    Zoom lens 有权
    变焦镜头

    公开(公告)号:EP1418453A1

    公开(公告)日:2004-05-12

    申请号:EP03024194.7

    申请日:2003-10-21

    发明人: Achtner, Betram

    CPC分类号: G02B13/22 G02B15/173

    摘要: A zoom lens (ZO) comprises in a direction of light propagation a front lens group (G1) having positive refractive power, a variator lens group (G2) having negative refractive power, a compensator lens group (G3) having positive refractive power, and a base lens group (G4) having positive refractive power. The base lens group (G4) comprises a first base lens group (G4.1) and a second base lens group (G4.2). The front lens group (G1), the variator lens group (G2), the compensator lens group (G3) and the first base lens group (G4.1) are arranged along a common straight first optical axis (23). The second base lens group (G4.2) is arranged along a second optical axis 23') inclined with respect to the first optical axis (23) at a first angle α different from 0° and 180°. A beam deflector (18) is arranged between the first base lens group (G4.1) and the second base lens group (G4.2).

    摘要翻译: 变焦透镜(ZO)在光传播方向上包括具有正折射光焦度的前透镜组(G1),具有负折射光焦度的变换透镜组(G2),具有正折射光焦度的补偿透镜组(G3)以及 具有正屈光力的基础透镜组(G4)。 基础透镜组(G4)包括第一基础透镜组(G4.1)和第二基础透镜组(G4.2)。 前透镜组(G1),变倍透镜组(G2),补偿透镜组(G3)和第一基础透镜组(G4.1)沿共同的直的第一光轴(23)布置。 第二基础透镜组(G4.2)沿着相对于第一光轴(23)以不同于0°和180°的第一角度α倾斜的第二光轴23'布置。 在第一基体透镜组(G4.1)和第二基体透镜组(G4.2)之间布置有光束偏转器(18)。