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    • 3. 发明授权
    • Optical focus position control in an optical memory system
    • 光学存储器系统中的光学焦点位置控制
    • US4658390A
    • 1987-04-14
    • US600374
    • 1984-04-16
    • Yosikazu FujiiTetsuya InuiToshihisa DeguchiHideyoshi Yamaoka
    • Yosikazu FujiiTetsuya InuiToshihisa DeguchiHideyoshi Yamaoka
    • G11B7/09G11B11/105G11B7/12
    • G11B7/0932G11B11/10504G11B11/10576G11B7/093
    • An optical focus position control system in an opto-magnetic disc apparatus includes a tracking control device and a focus control device. The tracking control device includes an intermediate holder, a tracking parallel spring which connects an cylindrical objective lens support to the intermediate holder while ensuring movement of the cylindrical objective lens support in the radial direction of the opto-magnetic disc, and a tracking drive mechanism to shift the cylindrical objective lens support in the radial direction within the intermediate holder. The focus control device includes a stationary holder, a focusing parallel spring which connects the intermediate holder to the stationary holder while ensuring movement of the intermediate holder in the direction of the optical axis of laser beams emitted through the optical focus position control system, and a focusing drive mechanism to shift the intermediate holder in the optical axis direction within the stationary holder.
    • 光盘装置中的光焦点位置控制系统包括跟踪控制装置和聚焦控制装置。 跟踪控制装置包括中间保持器,跟踪平行弹簧,其将圆柱形物镜支架连接到中间保持器,同时确保圆柱形物镜支架沿光盘的径向方向移动;跟踪驱动机构, 圆柱形物镜支架在中间支架内径向移动。 聚焦控制装置包括固定保持器,聚焦平行弹簧,其将中间保持器连接到静止保持器,同时确保中间保持器沿通过光学焦点位置控制系统发射的激光束的光轴方向的移动,以及 聚焦驱动机构在固定保持器内沿光轴方向移动中间保持器。
    • 6. 发明授权
    • Optical recording element having a plurality of thin film filtering
layers and optical recording element having an electrically conductive
layer
    • 具有多个薄膜滤光层的光学记录元件和具有导电层的光学记录元件
    • US5214636A
    • 1993-05-25
    • US421757
    • 1989-10-16
    • Toshio IshikawaHiroyuki KatayamaKazuo VanTomoyuki MiyakeJunichiro NakayamaKenji OhtaHideyoshi Yamaoka
    • Toshio IshikawaHiroyuki KatayamaKazuo VanTomoyuki MiyakeJunichiro NakayamaKenji OhtaHideyoshi Yamaoka
    • G11B7/24053G11B7/253G11B7/254
    • G11B7/253G11B7/24053G11B7/254
    • An optical recording element according to the present invention comprising: (i) a transparent substrate through which light passes; (ii) a transparent low-resistance layer having a specific resistance so as to prevent the adhesion of dust to the surface of the element caused by a static charge, the layer being formed on the surface, on which a light beam is incident, of the transparent substrate; and (iii) an optical thin film composed of at least one layer, formed on the other surface of the transparent substrate so as to transmit light beams used for recording, erasing and playback, and reflect lights which have wavelengths different from the wavelength of the above light beams and are within a specified visible region of the spectrum. With this arrangement, lights within a specified visible region of the spectrum are reflected so that the element appears to be colored according to the wavelengths of the reflected lights. Also, a problem often found in a conventional optical recording element having a transparent substrate of a resin material that the surface of the element is hardened by a light beam, can be solved. Even if a static charge is generated on the surface of such an element, the conductive transparent low-resistance substrate can eliminate the static charge outward whereby a static charge is less likely to be accumulated and the surface can be kept clean in order to improve the reliability.
    • 根据本发明的光学记录元件包括:(i)光通过的透明基板; (ii)具有电阻率的透明低电阻层,以防止由静电引起的灰尘附着在元件表面上,该层形成在光束入射的表面上的层是 透明基板; 和(iii)由至少一层构成的光学薄膜,形成在透明基板的另一个表面上,以透射用于记录,擦除和重放的光束,并且反射具有与波长不同的波长的光 在光束之上,并且在光谱的指定可视区域内。 通过这种布置,光谱的指定可视区域内的光被反射,使得该元件看起来根据反射光的波长着色。 而且,通过在具有树脂材料的透明基板的光学记录元件中经常发现的问题在于,元件的表面被光束硬化。 即使在这种元件的表面上产生静电荷,导电透明低电阻基板也可以向外消除静电荷,由此静电荷不易累积,并且表面可以保持清洁以改善 可靠性。