Optical recording system with aspherical solid immersion lens
    8.
    发明授权
    Optical recording system with aspherical solid immersion lens 失效
    具有非球面固体浸没透镜的光学记录系统

    公开(公告)号:US06633439B1

    公开(公告)日:2003-10-14

    申请号:US09714007

    申请日:2000-11-16

    IPC分类号: G02B1318

    摘要: The present invention provides an improved optical reading and recording system utilizing optical system employing an aspherical solid immersion lens (SIL). The improved optical system has an aspherical SIL between an objective lens and the recording media. The aspherical SIL reduces the focused electromagnetic radiation beam spot size by providing an increased numeric aperture (NA) of the optical system. The aspherical surface of the SIL provide greater manufacturing and operating tolerances between the objective lens and the aspherical SIL. Greater manufacturing tolerances provide an easier to manufacture optical system. Increased ease of manufacture reduces the cost of optical systems.

    摘要翻译: 本发明提供了利用采用非球面固体浸没透镜(SIL)的光学系统的改进的光学读取和记录系统。 改进的光学系统在物镜和记录介质之间具有非球面SIL。 非球面SIL通过提供光学系统的增加的数值孔径(NA)来减少聚焦的电磁辐射束斑点尺寸。 SIL的非球面表面在物镜和非球面SIL之间提供更大的制造和工作公差。 更大的制造公差提供了更容易制造的光学系统。 增加制造的便利性降低光学系统的成本。