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    • 5. 发明授权
    • Optical disc apparatus
    • 光盘装置
    • US06667943B1
    • 2003-12-23
    • US09553854
    • 2000-04-21
    • Koichi MaruyamaHisashi KonnoSuguru TakishimaWataru KuboHiroshi NishikawaHiroshi Yamamoto
    • Koichi MaruyamaHisashi KonnoSuguru TakishimaWataru KuboHiroshi NishikawaHiroshi Yamamoto
    • G11B700
    • G11B7/1275G11B7/1353G11B7/1374G11B7/13922G11B2007/0006
    • An optical disc apparatus includes a fixed portion having a light source portion and a movable portion that holds an objective lens and moves along a radial direction of an optical disc. The fixed portion includes the light source portion for selectively emitting short and long wavelength laser beams, and a collimator lens for collimating the laser beams. The objective lens includes a positive refractive lens and a diffractive lens structure formed on a surface of the refractive lens. The diffractive lens structure has wavelength dependence such that spherical aberration varies in the undercorrected direction as wavelength of incident light increases. The objective lens converges the short wavelength laser beam of a predetermined diffraction order onto an informatlon layer of a thin cover type optical disc, and converges the long wavelength laser beam of the identical diffraction order onto an information layer of a thick cover type optical disc.
    • 光盘装置包括具有光源部分和保持物镜并沿着光盘的径向方向移动的可动部分的固定部分。 固定部分包括用于选择性地发射短波长和长波长激光束的光源部分和用于准直激光束的准直透镜。 物镜包括形成在折射透镜的表面上的正折射透镜和衍射透镜结构。 衍射透镜结构具有波长依赖性,使得随着入射光的波长的增加,球面像差在校正不正确的方向上变化。 物镜将预定衍射级的短波长激光束会聚到薄盖型光盘的信息层上,并将相同衍射级的长波长激光束会聚到厚盖型光盘的信息层上。
    • 6. 发明授权
    • Shutter mechanism for disk drive device
    • 磁盘驱动器的快门机构
    • US06411583B1
    • 2002-06-25
    • US08896533
    • 1997-07-18
    • Hiroshi YamamotoSuguru Takishima
    • Hiroshi YamamotoSuguru Takishima
    • G11B3314
    • G11B17/0405
    • A rectangular shutter leaf is swingably provided to an opening of a front panel of a disk drive device, a cartridge being inserted or discharged through the opening. The shutter leaf is supported to, and swingable about, one side of the shutter leaf. A resilient skirt is provided on all sides of the shutter leaf except the supported side, and extends toward the periphery of the opening. When the shutter leaf is parallel to the front panel and substantially closes the opening, the resilient skirt covers a clearance between the shutter leaf and the opening, preventing the entry of debris or dust into the interior of the disk drive device through the opening.
    • 矩形快门叶可摆动地设置在盘驱动装置的前面板的开口处,盒通过开口插入或排出。 快门叶被支撑并且围绕快门叶的一侧可摆动。 弹性裙部设置在活门叶片的除了支撑侧之外的所有侧面上,并且朝向开口的周边延伸。 当快门叶片平行于前面板并且基本上封闭开口时,弹性裙部覆盖快门叶片和开口之间的间隙,防止碎片或灰尘通过开口进入盘驱动装置的内部。
    • 8. 发明授权
    • Fuel valve
    • 燃油阀
    • US09568151B2
    • 2017-02-14
    • US13990436
    • 2011-09-01
    • Hiroshi Yamamoto
    • Hiroshi Yamamoto
    • F17C13/06F23K5/02F23K5/14
    • F17C13/06F16K11/076F16K11/0856F23D14/28F23K5/02F23K5/147F23K2301/206F23N1/027
    • A fuel valve includes a cylindrical flow adjusting member having a cylindrical surface formed with two circumferentially extending V-shaped grooves for liquid fuel and air, respectively. The fuel valve further includes liquid fuel and air supply pipes having O-rings at their respective discharge ports which are kept in abutment with the cylindrical surface such that when the flow rate adjusting member is rotated to a position where the V-shaped grooves extend across and protrude from the respective O-rings, the discharge ports of the supply pipes communicate with the respective V-shaped grooves, so that liquid fuel and air flow. The depths, widths and positions of the respective V-shaped grooves are determined corresponding to an igniting position (preheating step), normal burning positions (high heat to low heat), and a discharge position such that the flow rates of liquid fuel and air can be adjusted in synchronization with each other.
    • 燃料阀包括圆柱形流动调节构件,其具有分别形成有用于液体燃料和空气的两个周向延伸的V形槽的圆柱形表面。 燃料阀还包括液体燃料和空气供应管,它们在它们各自的排放口处具有O形环,它们保持与圆柱形表面邻接,使得当流量调节构件旋转到V形槽延伸穿过的位置时 并且从各O形环突出,供给管的排出口与各V字槽连通,液体燃料和空气流动。 根据点火位置(预热步骤),正常燃烧位置(高热到低热)和排出位置来确定各个V形槽的深度,宽度和位置,使得液体燃料和空气的流量 可以相互同步调整。