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    • 2. 发明授权
    • Method and apparatus for coupling an optical lens to a disk through a
coupling medium having a relatively high index of refraction
    • 用于通过具有相对较高折射率的耦合介质将光学透镜耦合到盘的方法和装置
    • US6104687A
    • 2000-08-15
    • US920101
    • 1997-08-26
    • Neville K. S. LeeJohn S. BergEasen Ho
    • Neville K. S. LeeJohn S. BergEasen Ho
    • G11B7/12G11B7/135G11B7/24
    • G11B7/24G11B7/122G11B7/1374
    • In one aspect, an optical recording system including an optical recording medium; a light source; a focusing lens that focuses light generated by the light source to form a focused beam of light directed toward the recording medium; and a coupling medium disposed between the lens and at least one portion of the optical recording medium, the coupling medium being transparent and having a refractive index greater than one. The coupling medium facilitates optical coupling between the lens and the recording medium. In another aspect, the coupling medium is disposed so that no air gap exists in the optical path between the lens and the recording medium. In another aspect, the exit surface of the lens is disposed at a distance from the recording medium that exceeds a distance that an evanescent wave of a high angle ray of the beam of light would travel after contacting air, but the system includes coupling means for coupling the ray of light from the lens to the recording medium. In another aspect, an optical recording medium is provided with at least one layer of fluid disposed atop the recording medium, the fluid being transparent and having a refractive index greater than one.
    • 一方面,一种光记录系统,包括光记录介质; 光源; 聚焦透镜,其聚焦由光源产生的光以形成朝向记录介质的聚焦光束; 以及设置在所述透镜和所述光学记录介质的至少一部分之间的耦合介质,所述耦合介质是透明的并且具有大于1的折射率。 耦合介质有利于透镜和记录介质之间的光耦合。 在另一方面,耦合介质被设置为使得透镜和记录介质之间的光路中不存在气隙。 在另一方面,透镜的出射表面设置在离记录介质一定距离处,该距离超过光束接触空气之后光束的高角度射线的消逝波的距离,但该系统包括用于 将来自透镜的光线耦合到记录介质。 在另一方面,光记录介质设置有设置在记录介质上方的至少一层流体,该流体是透明的并具有大于1的折射率。
    • 3. 发明授权
    • Flying head positioner having rotational fine positioning and adjustable
actuator load
    • 飞头定位器具有旋转精细定位和可调节的执行器负载
    • US6125008A
    • 2000-09-26
    • US839766
    • 1997-04-15
    • John S. BergNeville K. S. Lee
    • John S. BergNeville K. S. Lee
    • G11B5/60G11B7/09G11B7/12G11B21/21G11B5/56
    • G11B21/21G11B7/093G11B7/0937G11B7/122
    • A flying head mechanism includes a flying head, a suspension and an actuator which applies a load force through the suspension. The load force applied by the actuator is adjustable while the head is in operation. The actuator may actively control load force as part of a feedback loop which maintains the flying head at a constant flying height. One embodiment disclosed includes a voice coil actuator. In embodiments using an optical flying head, a conventional focus sensor may provide a signal indicative of flying height, since the focus signal inherently indicates flying height error. The flying head includes a contact sensor which detects head/disk contact. The head further includes means for changing the focus of the optical elements, without changing the flying height of the head. The entire suspension is mounted in a shock and vibration immune configuration. Two heads may be used in some embodiments, in which more than one type of media may be read or written by the disk drive.
    • 飞头机构包括飞头,悬架以及通过悬架施加载荷力的致动器。 执行器施加的载荷力可以在头部运行时调节。 致动器可以主动地将负载力控制为反馈回路的一部分,其将飞行头保持在恒定的飞行高度。 所公开的一个实施例包括音圈致动器。 在使用光学飞行头的实施例中,传统的聚焦传感器可以提供指示飞行高度的信号,因为聚焦信号固有地表示飞行高度误差。 飞头包括检测头/盘接触的接触传感器。 头部还包括用于改变光学元件的焦点的装置,而不改变头部的飞行高度。 整个悬架安装在一个震动和振动的免疫结构。 在一些实施例中可以使用两个头,其中可以由盘驱动器读取或写入多于一种类型的介质。