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    • 5. 发明授权
    • Magneto-optical data recording device using a wavelength and
polarization-sensitive splitter
    • 使用波长和偏振敏感分离器的磁光数据记录装置
    • US4965780A
    • 1990-10-23
    • US84577
    • 1987-08-12
    • Neville K. S. LeeJames Howard
    • Neville K. S. LeeJames Howard
    • G11B11/10G11B11/105
    • G11B11/10532
    • An optical mass storage device for use in data processing systems. Two or more lasers provide separate read and write laser beams having different wavelengths. The read and write laser beams can be orthogonally polarized. A polarizing beam splitter combines the read and write beams along a common optical path to an optical head. The head directs the combined beam to a magneto-optic storage medium. A read beam is reflected back by the medium to the common path through the head. A dichroic beam splitter disposed in the common path between the head and the polarizing splitter reflects the read beam to an optical detector. If more than one write laser is necessary, a second dichroic splitter can be used to combine the multiple write beams and the read beam.
    • 一种用于数据处理系统的光学大容量存储装置。 两个或更多个激光器提供具有不同波长的单独的读和写激光束。 读写激光束可以是正交极化的。 偏振分束器将沿着公共光路的读取和写入光束组合到光学头。 头部将组合的光束引导到磁光存储介质。 读取光束被介质反射回通过头部的公共路径。 设置在头部和偏振分离器之间的公共路径中的二向色分束器将读取的光束反射到光学检测器。 如果需要多于一个写入激光器,则可以使用第二分色器来组合多个写入光束和读取光束。
    • 6. 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
    • US06236634B1
    • 2001-05-22
    • US09636492
    • 2000-08-11
    • Neville K. S. LeeJohn S. BergEasen Ho
    • Neville K. S. LeeJohn S. BergEasen Ho
    • G11B712
    • 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。
    • 7. 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。