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    • 6. 发明申请
    • LENS UNIT AND IMAGE CAPTURING APPARATUS
    • 镜头单元和图像捕获设备
    • US20120194929A1
    • 2012-08-02
    • US13308916
    • 2011-12-01
    • Hosei NAKAHIRAToshihisa TANAKAYoichi YAMAMOTO
    • Hosei NAKAHIRAToshihisa TANAKAYoichi YAMAMOTO
    • G02B7/04
    • G02B7/04G02B7/08
    • Provided is a lens unit comprising an actuator that is self-supporting when at a stopped position. The lens unit comprises a holding frame that holds a lens; a movement actuator that moves the holding frame, which is connected to a moving member that moves linearly relative to a stator, when drive force is generated, and does not prevent the moving member from moving relative to the stator when the moving member is stopped; and a braking actuator that stops the moving member from moving relative to the stator, using frictional force, when the movement actuator is not generating the drive force, and decreases the frictional force when the movement actuator generates the drive force.
    • 提供了一种透镜单元,包括当处于停止位置时是自支撑的致动器。 透镜单元包括保持透镜的保持框架; 移动致动器,当驱动力产生时,移动所述保持框架,所述保持框架连接到相对于定子线性移动的移动构件,并且当所述移动构件停止时不阻止所述移动构件相对于所述定子移动; 以及当运动致动器不产生驱动力时使用摩擦力使运动部件相对于定子运动的制动致动器,并且当运动致动器产生驱动力时减小摩擦力。
    • 8. 发明授权
    • Focus control device to perform focus control for a multi-layer
recording medium
    • 聚焦控制装置对多层记录介质进行聚焦控制
    • US5978328A
    • 1999-11-02
    • US934811
    • 1997-09-22
    • Toshihisa Tanaka
    • Toshihisa Tanaka
    • G11B7/085G11B7/00G11B7/09
    • G11B7/0908G11B7/0945G11B2007/0013G11B7/0941
    • A data recording and playback device to perform focusing control on each recording layer of a multi-layer recording medium having a plurality of recording layers. The data recording and playback device includes a focus control device having a focusing movement device to set a position of a light spot, which illuminates a data recording medium having a plurality of recording layers, with respect to a direction perpendicular to the data recording medium. A focus error signal forming device forms a focus error signal based on a relative displacement of the position of the light spot set by the focusing movement device and the recording surface of the medium. A position signal forming device forms a position signal based on a displacement of the focusing movement device in a direction perpendicular to the recording medium surface, the position signal forming device having a detection range wider than that of the focus error signal forming device. A control device forms a control signal at the time of a focus jump operation to move the light spot from a recording layer to a target recording layer based chiefly on the position signal, and forms a control signal to control the focusing movement device at the time of a focusing operation to move the light spot to follow a target recording layer based chiefly on the focus error signal.
    • 一种用于对具有多个记录层的多层记录介质的每个记录层执行聚焦控制的数据记录和重放装置。 数据记录和重放装置包括具有聚焦移动装置的聚焦控制装置,用于相对于垂直于数据记录介质的方向来设置照亮具有多个记录层的数据记录介质的光点的位置。 聚焦误差信号形成装置基于由聚焦移动装置和介质的记录表面设置的光点的位置的相对位移而形成聚焦误差信号。 位置信号形成装置基于聚焦运动装置在与记录介质表面垂直的方向上的位移形成位置信号,该位置信号形成装置的检测范围比聚焦误差信号形成装置的检测范围宽。 控制装置在聚焦跳跃操作时形成控制信号,主要基于位置信号将光点从记录层移动到目标记录层,并形成控制信号,以便在此时控制聚焦移动装置 主要基于聚焦误差信号来移动光点跟随目标记录层的聚焦操作。
    • 9. 发明授权
    • Information recording and reproduction device
    • 信息记录和再现设备
    • US5936924A
    • 1999-08-10
    • US870632
    • 1997-06-06
    • Toshihisa Tanaka
    • Toshihisa Tanaka
    • G11B7/004G11B7/0045G11B7/005G11B7/0055G11B7/007G11B7/125G11B11/105G11B7/00
    • G11B7/126G11B11/10595G11B7/004G11B7/00718G11B11/10508G11B11/10515G11B7/0045G11B7/005G11B7/0055
    • An information recording and reproduction device records, erases or reproduces information by projecting a laser beam to a recording medium that has a first group of information tracks and a second group of information tracks, both of which are in a concentric or spiral state, there being a difference in a height of the information tracks of the first group relative to the second group, the tracks of the first group alternating with the tracks of the second group in a radial direction of the recording medium. The device includes a recording device that records specific information multiple times at different recording conditions on a selected one of the information tracks; a reproduction device that reproduces the specific information from the selected one of the information tracks; and a controller that determines the recording conditions, erasure conditions, or reproduction conditions to be used for the information tracks of the first group and for the information tracks of the second group based on a plurality of reproduction signals reproduced by the reproduction device. The recording condition can include a wave height value and a pulse width of a recorded pulse. The reproduction conditions can include a reproduction power level and a frequency of the high frequency accumulation. The erasure condition can include an erasure power level.
    • 信息记录和再现设备通过将激光束投射到具有第一组信息轨道的记录介质和第二组信息轨道(两者处于同心或螺旋状态)来记录,擦除或再现信息, 第一组的信息轨迹相对于第二组的高度差异,第一组的轨道与记录介质的径向方向上的第二组的轨道交替。 该装置包括记录装置,其在所选信息轨道中的不同记录条件下多次记录特定信息; 再现装置,用于从所选择的信息轨道中再现特定信息; 以及控制器,其基于由再现设备再现的多个再现信号,确定要用于第一组的信息轨道和第二组的信息轨道的记录条件,擦除条件或再现条件。 记录条件可以包括记录脉冲的波高值和脉冲宽度。 再现条件可以包括再现功率电平和高频累积的频率。 擦除状态可以包括擦除功率电平。
    • 10. 发明授权
    • High-strength fiber of biodegradable aliphatic polyester and process for producing the same
    • 生物降解脂肪族聚酯的高强度纤维及其制造方法
    • US07938999B2
    • 2011-05-10
    • US11664285
    • 2005-08-04
    • Tadahisa IwataToshihisa TanakaYoshiharu Doi
    • Tadahisa IwataToshihisa TanakaYoshiharu Doi
    • B29C47/06
    • D01F6/625Y10T442/608
    • An object of the present invention is to provide: a process for conveniently producing a fiber with high strength, regardless of molecular weight polymer composition, or the like of PHAs, which vary depending on origins such as a wild-type PHAs-producing microorganism product, a genetically modified strain product, and a chemical product; and the fiber with high strength produced through the process.The present invention provides: a process for producing a fiber, comprising: melt-extruding polyhydroxyalkanoic acid to form a melt-extruded fiber; rapidly quenching the melt-extruded fiber to the glass transition temperature of polyhydroxyalkanoic acid +15° C. or less, and solidifying the fiber to form an amorphous fiber; forming a crystalline fiber by leaving the amorphous fiber to stand at the glass transition temperature +15° C. or less; drawing the crystalline fiber; and further subjecting the crystalline fiber to stretch heat treatment.
    • 本发明的一个目的是提供一种方便地生产具有高强度的纤维的方法,不管PHAs的分子量聚合物组合物等等,其根据诸如野生型PHA-生产微生物产物 ,转基因产品和化学产品; 并且通过该过程产生具有高强度的纤维。 本发明提供:一种纤维的制造方法,其特征在于,包括:熔融挤出聚羟基链烷酸以形成熔融挤出的纤维; 将熔融挤出纤维快速淬火至聚羟基链烷酸+ 15℃或更低的玻璃化转变温度,并使纤维固化形成非晶纤维; 通过使非晶纤维在玻璃化转变温度+ 15℃以下保持静置而形成结晶纤维; 绘制结晶纤维; 并进一步对结晶纤维进行拉伸热处理。