Objective lens driving apparatus and a manufacturing method thereof
    101.
    发明授权
    Objective lens driving apparatus and a manufacturing method thereof 失效
    物镜驱动装置及其制造方法

    公开(公告)号:US07630150B2

    公开(公告)日:2009-12-08

    申请号:US11698106

    申请日:2007-01-26

    IPC分类号: G02B7/02

    CPC分类号: G02B27/646 G02B7/02

    摘要: An objective lens actuator that can accommodate higher density and speed is provided by improving frequency characteristics of an objective lens.The objective lens actuator includes an objective lens, a cylindrical lens holder that holds the objective lens, and a reinforcement part disposed in an opening opposite to the objective lens of the lens holder. The reinforcement part has a size that occupies one third to one half of the cylindrical wall of the lens holder from the end of an aperture along the optical axis. In this range, the high order resonance frequencies of the lens holder can be increased, and therefore, it is possible to obtain an objective lens actuator that can minimize the vibration amplitude at the high order resonance frequencies.

    摘要翻译: 可以通过改善物镜的频率特性来提供可以适应较高密度和速度的物镜致动器。 物镜致动器包括物镜,保持物镜的柱面透镜保持器和设置在与透镜保持器的物镜相对的开口中的加强部。 加强部分具有沿着光轴从孔的端部占据透镜保持器的圆柱形壁的三分之一到一半的尺寸。 在该范围内,可以提高透镜架的高次谐振频率,因此可以获得能够使高次谐振频率下的振动振幅最小化的物镜致动器。

    Synthetic Cork Stopper
    102.
    发明申请
    Synthetic Cork Stopper 审中-公开
    合成软木塞

    公开(公告)号:US20090253818A1

    公开(公告)日:2009-10-08

    申请号:US12083947

    申请日:2006-10-27

    IPC分类号: C08L47/00

    摘要: A synthetic cork stopper which has excellent gas-barrier properties and is satisfactory in sealing properties and suitability for opening. The synthetic cork stopper is obtained by foaming a composition including (a) an isobutylene-based block copolymer comprising a polymer block comprising isobutylene as its main component and a polymer block formed from a cationic polymerizable monomer ingredient in which isobutylene is not its main component; and a foaming agent.

    摘要翻译: 一种合成软木塞,具有优异的阻气性能,密封性能好,开口性好。 合成软木塞是通过发泡组合物得到的,所述组合物包括(a)包含以异丁烯为主要成分的聚合物嵌段的异丁烯系嵌段共聚物和由异丁烯不是其主要成分的阳离子可聚合单体成分形成的聚合物嵌段; 和发泡剂。

    Objective Lens Actuator and a Disc Apparatus Using the Same Therein
    103.
    发明申请
    Objective Lens Actuator and a Disc Apparatus Using the Same Therein 失效
    物镜驱动器及其使用的光盘装置

    公开(公告)号:US20090116129A1

    公开(公告)日:2009-05-07

    申请号:US12265748

    申请日:2008-11-06

    IPC分类号: G02B7/04

    CPC分类号: G11B7/0935 G11B7/0933

    摘要: An objective lens actuator, having a small tilt of an objective lens, for driving the objective lens in a focusing direction and a tracking direction, so as to focus lights on a recording surface of an optical disc, as a recording medium of information, comprises therein: a magnet; a lens holder, which is configured to hold the lens thereon; and four (4) pieces of tracking coils are disposed in a line on a side surface of the lens holder for holding the objective lens thereon, facing to the magnet. And also, an objective lens actuator, having a small tilt of an objective lens, for driving an objective lens in a focusing direction and a tracking direction, so as to focus lights on a recording surface of an optical disc, as a recording medium of information, comprises therein: magnets, which are disposed on two (2) surfaces putting the objective lens therebetween; a lens holder, which is configured to hold the lens thereon; and four (4) pieces of tracking coils are disposed in a line on each of two (2) side surfaces of the lens holder for holding the objective lens thereon, facing to the magnets.

    摘要翻译: 具有物镜的小倾斜的物镜致动器作为信息的记录介质,用于在聚焦方向和跟踪方向上驱动物镜,以将光聚焦在光盘的记录表面上,包括 其中:磁铁; 配置为将透镜保持在其上的透镜保持器; 并且四个(4)跟踪线圈被布置在透镜保持器的侧表面上,用于将物镜保持在其上面对磁体。 而且,具有物镜倾斜小的物镜致动器,用于在聚焦方向和跟踪方向上驱动物镜,以便将光聚焦在光盘的记录表面上作为记录介质 信息包括:磁体,其设置在两个(2)表面上,将物镜放置在其间; 配置为将透镜保持在其上的透镜保持器; 并且在透镜保持器的两(2)侧表面中的每一个侧面上设置四(4)个跟踪线圈,用于将物镜保持在其上面对磁体。

    OPTICAL PICKUP
    105.
    发明申请

    公开(公告)号:US20070274168A1

    公开(公告)日:2007-11-29

    申请号:US11668098

    申请日:2007-01-29

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0933 G11B7/0935

    摘要: An optical pickup in which the position of a magnet can be adjusted with respect to a yoke is provided. The optical pickup has an objective lens, a lens holder that holds the objective lens, a magnet disposed opposite to a side surface of the lens holder, and a yoke to the inside of which the magnet is attached. The yoke has an opening at least near the bottom of the magnet, through which the magnet can be visually observed from the outside of the yoke, the bottom being on the side of the yoke that is farther from an optical disc and the top being on the side of the yoke that is closer to the optical disc along the optical axis of the objective lens.

    摘要翻译: 提供了一种可以相对于磁轭调节磁体位置的光学拾取器。 光学拾取器具有物镜,保持物镜的透镜保持器,与透镜保持器的侧表面相对设置的磁体以及磁铁安装在其内部的磁轭。 轭具有至少接近磁体底部的开口,通过该开口可以从轭的外部目视观察磁体,底部位于离光盘更远的磁轭侧,顶部位于 轭的侧面沿着物镜的光轴更靠近光盘。

    Object lens actuator
    106.
    发明申请
    Object lens actuator 失效
    对象镜头执行器

    公开(公告)号:US20070079316A1

    公开(公告)日:2007-04-05

    申请号:US11527412

    申请日:2006-09-27

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0935 G11B7/22

    摘要: In an object lens actuator, stiffness of a lens holder is improved and the higher order resonance frequency is sufficiently increased. The stiffness of the lens holder is improved by providing a flat plate perpendicular to the focusing direction between the side wall of a lens holding part and the outer sidewall along the tracking direction at approximately the middle of both ends of the lens holder along the focusing direction.

    摘要翻译: 在物镜致动器中,透镜架的刚度提高,高次谐振频率充分提高。 通过在透镜保持部的侧壁沿着跟踪方向设置垂直于聚焦方向的平板,沿着聚焦方向在透镜保持器的两端的大致中间处设置透镜保持器的刚度, 。

    Objective-lens driving apparatus and optical disk apparatus
    107.
    发明授权
    Objective-lens driving apparatus and optical disk apparatus 有权
    物镜驱动装置和光盘装置

    公开(公告)号:US07107602B2

    公开(公告)日:2006-09-12

    申请号:US10714944

    申请日:2003-11-18

    IPC分类号: G11B7/085

    摘要: An objective-lens driving apparatus includes permanent magnets on both ends of the movable unit, simultaneously, on the other side of the movable unit parallel to the tracking direction, also a permanent magnet at a position closer to the center of the movable unit. This configuration makes it possible to reduce each moment generated at each of a focusing coil and a tracking coil when an objective lens is displaced.

    摘要翻译: 物镜驱动装置包括可移动单元的两端的永磁体,同时在可移动单元的平行于跟踪方向的另一侧上,在靠近可移动单元的中心的位置处还有永磁体。 这种构造使得可以减小当物镜移位时在聚焦线圈和跟踪线圈中的每一个处产生的每个时刻。

    Cycloolefin copolymer resin composition and process for preparing the same
    109.
    发明授权
    Cycloolefin copolymer resin composition and process for preparing the same 失效
    环烯烃共聚物树脂组合物及其制备方法

    公开(公告)号:US06331591B1

    公开(公告)日:2001-12-18

    申请号:US09424360

    申请日:1999-11-23

    IPC分类号: C08G6348

    摘要: A cycloolefin copolymer resin composition having well-balanced transparency and impact resistance which comprises (A) a cycloolefin copolymer and (B) 1 to 100 parts by weight, per 100 parts by weight of said cycloolefin copolymer, of at least one rubber-like polymer selected from the group consisting of (B1) an aromatic vinyl-isobutylene copolymer and (B2) an aromatic vinyl-conjugated diene copolymer, wherein the difference in refractive index (nD) at 20° C. between the components (A) and (B) is at most 0.015 and the particle size of the component (B) dispersed in the component (A) is from 0.4 to 3 &mgr;m. The composition may further contain a core-shell polymer (C), whereby the impact resistance can be further improved. The composition is prepared by kneading the above components at an elevated temperature optionally in the presence of an organic peroxide.

    摘要翻译: 一种具有良好平衡的透明性和耐冲击性的环烯烃共聚物树脂组合物,其包含(A)环烯烃共聚物和(B)每100重量份所述环烯烃共聚物1至100重量份的至少一种橡胶状聚合物 选自(B1)芳族乙烯基 - 异丁烯共聚物和(B2)芳族乙烯基 - 共轭二烯共聚物,其中在组分(A)和(B)之间的20℃下的折射率差(nD) )为0.015以下,分散在成分(A)中的成分(B)的粒径为0.4〜3μm。 组合物还可以含有核 - 壳聚合物(C),由此可以进一步提高耐冲击性。 组合物通过任选在有机过氧化物的存在下在高温下捏合上述组分来制备。

    Tilt detection method and optical disk drive
    110.
    发明授权
    Tilt detection method and optical disk drive 失效
    倾斜检测方法和光盘驱动器

    公开(公告)号:US6128258A

    公开(公告)日:2000-10-03

    申请号:US123404

    申请日:1998-07-28

    IPC分类号: G11B7/095 G11B7/125 G11B7/09

    摘要: In an optical disk drive using as a light source a semiconductor laser having a main electrode and a plurality of subsidiary electrodes, a wave front of a generated laser beam is modulated by controlling injection currents to the plurality of subsidiary electrodes, in accordance with a change in signal outputs when the wave front is modulated, a tilt is detected between a direction normal to the surface of an optical disk and an objective lens optical axis, and in accordance with the detected tilt, the injection currents to the semiconductor laser are determined to correct the tilt. Since the tilt is detected and corrected through electrical modulation, the system can be made compact without using new components for tilt detection, and high speed control up to a high frequency becomes possible because there is no limit of the control bandwidth to be caused by sub-resonances in a high frequency band, like a mechanical actuator.

    摘要翻译: 在使用具有主电极和多个辅助电极的半导体激光器作为光源的光盘驱动器中,通过根据变化控制对多个辅助电极的注入电流来调制所产生的激光束的波前 在波前调制的信号输出中,在垂直于光盘表面的方向和物镜光轴之间检测到倾斜,并且根据检测到的倾斜,将确定到半导体激光器的注入电流被确定为 纠正倾斜。 由于通过电调制来检测和校正倾斜,所以可以使系统紧凑而不使用用于倾斜检测的新部件,并且由于没有由sub引起的控制带宽的限制,所以高达高频率的高速控制成为可能 - 在高频带中的谐振,如机械致动器。