OPTICAL HEAD
    2.
    发明申请
    OPTICAL HEAD 有权
    光学头

    公开(公告)号:US20080304397A1

    公开(公告)日:2008-12-11

    申请号:US11960725

    申请日:2007-12-20

    IPC分类号: G11B7/135

    摘要: A micro optical head is provided, which provides sub-wavelength focusing spot and very long depth of focus. The optical head includes a transparent substrate, an opaque film, and at least one sub-wavelength annular channel. After coherent light transmits the transparent substrate supporting the optical head and passes through the appropriately designed sub-wavelength annular channel, the transmitted light can overcome the diffraction limit, and the transmission energy is improved efficiently. The transmitted light converges after a certain distance behind the optical head and forms a sub-wavelength-scale beam that maintains a very long distance without divergence.

    摘要翻译: 提供了一种微光学头,其提供亚波长聚焦点和非常长的焦深。 光头包括透明基板,不透明膜和至少一个亚波长环形通道。 相干光透过支撑光头并透过合适设计的亚波长环形通道的透明基板,可以克服衍射极限,有效提高透射能量。 透射光在光学头后方一定距离后会聚,形成保持非常长的距离而不发散的亚波长标度光束。

    Optical head
    4.
    发明授权
    Optical head 有权
    光头

    公开(公告)号:US07957250B2

    公开(公告)日:2011-06-07

    申请号:US11960725

    申请日:2007-12-20

    IPC分类号: G11B7/00

    摘要: A micro optical head is provided, which provides sub-wavelength focusing spot and very long depth of focus. The optical head includes a transparent substrate, an opaque film, and at least one sub-wavelength annular channel. After coherent light transmits the transparent substrate supporting the optical head and passes through the appropriately designed sub-wavelength annular channel, the transmitted light can overcome the diffraction limit, and the transmission energy is improved efficiently. The transmitted light converges after a certain distance behind the optical head and forms a sub-wavelength-scale beam that maintains a very long distance without divergence.

    摘要翻译: 提供了一种微光学头,其提供亚波长聚焦点和非常长的焦深。 光头包括透明基板,不透明膜和至少一个亚波长环形通道。 相干光透过支撑光头并透过合适设计的亚波长环形通道的透明基板,可以克服衍射极限,有效提高透射能量。 透射光在光学头后方一定距离后会聚,形成保持非常长的距离而不发散的亚波长标度光束。