Optical information recording/reproducing apparatus and objective optical system for the same
    1.
    发明授权
    Optical information recording/reproducing apparatus and objective optical system for the same 失效
    光信息记录/再现装置和物镜光学系统相同

    公开(公告)号:US08699312B2

    公开(公告)日:2014-04-15

    申请号:US13954074

    申请日:2013-07-30

    Abstract: An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03

    Abstract translation: 一种用于信息记录/再现的物镜光学系统,所述物镜光学系统的光学表面中的至少一个包括衍射表面,所述衍射表面包括有助于会聚第一,第二和第三光束的第一区域,并且包括衍射结构, 第一,第二和第三光束为1阶,满足条件0.03 <(λB11-λ1)/λ1<0.40; 第二区域有助于仅会聚第一和第二光束,并且包括形成为使得衍射级数为1级并且条件为-0.35 <(λB12-λB11)/λ1<0.35的衍射结构; 以及第三区域,仅有助于仅会聚第一光束,并且包括衍射结构,所述衍射结构形成为使得第一光束的使用衍射级为奇数阶,并且条件为:-0.23

    OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME
    2.
    发明申请
    OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS AND OBJECTIVE OPTICAL SYSTEM FOR THE SAME 失效
    光信息记录/再现设备和目标光学系统

    公开(公告)号:US20130315047A1

    公开(公告)日:2013-11-28

    申请号:US13954074

    申请日:2013-07-30

    Abstract: An objective optical system for information recording/reproducing, at least one of optical surfaces of the objective optical system comprising a diffraction surface including a first region contributing to converging first, second and third beams and including a diffraction structure formed such that use diffraction orders for the first, second and third beams are 1st-orders and a condition 0.03

    Abstract translation: 一种用于信息记录/再现的物镜光学系统,所述物镜光学系统的光学表面中的至少一个包括衍射表面,所述衍射表面包括有助于会聚第一,第二和第三光束的第一区域,并且包括衍射结构, 第一,第二和第三光束为1阶,满足条件0.03 <(λB11-λ1)/λ1<0.40; 第二区域有助于仅会聚第一和第二光束,并且包括形成为使得衍射级数为1级并且条件为-0.35 <(λB12-λB11)/λ1<0.35的衍射结构; 以及第三区域,仅有助于仅会聚第一光束,并且包括衍射结构,所述衍射结构形成为使得第一光束的使用衍射级为奇数阶,并且条件为:-0.23

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