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1. 发明授权

US5673152A Optical pickup comprising a heat-insulating material 失效
标题翻译：光拾取器包括绝热材料
公开(公告)号：US5673152A
公开(公告)日：1997-09-30
申请号：US714568
申请日：1996-09-16
申请人： Yasuo Yokota , Yukihiro Iwata , Hirotsugu Fusayasu , Hiroto Inoue , Atsufumi Ishizuka , Yukihiro Okada
发明人： Yasuo Yokota , Yukihiro Iwata , Hirotsugu Fusayasu , Hiroto Inoue , Atsufumi Ishizuka , Yukihiro Okada
IPC分类号： G11B7/09 , G11B7/135 , G02B7/02
CPC分类号： G11B7/0935
摘要： An optical pickup includes an object lens; a lens holder for holding the object lens; a visco-elastic suspender for suspending the lens holder so as to be movable in a focusing direction and a tracking direction; a driving section for driving the lens holder in the focusing direction and the tracking direction, the driving section including a magnet, a yoke and a driving coil provided on the lens holder. The magnet and the yoke form a magnetic circuit. A heat-insulating area is located between the object lens and the driving coil, and the heat-insulating area includes a heat-insulating material which has a thermal conductivity lower than that of the lens holder.
摘要翻译：光拾取器包括物镜; 用于保持物镜的透镜保持器; 用于悬挂透镜保持件以便可以在聚焦方向和跟踪方向上移动的粘弹性悬吊件; 用于沿聚焦方向和跟踪方向驱动透镜保持器的驱动部分，驱动部分包括设置在透镜保持器上的磁体，磁轭和驱动线圈。磁铁和磁轭形成磁路。绝热区域位于物镜和驱动线圈之间，绝热区域包括导热率低于透镜保持器的绝热材料。

2. 发明授权

US5373496A Objective lens actuator having rodlike elastic members supporting U-shaped lens holder 失效
标题翻译：物镜致动器具有支撑U形透镜支架的棒状弹性元件
公开(公告)号：US5373496A
公开(公告)日：1994-12-13
申请号：US969963
申请日：1992-11-02
申请人： Hironori Tomita , Tohru Nakamura , Atsufumi Ishizuka
发明人： Hironori Tomita , Tohru Nakamura , Atsufumi Ishizuka
IPC分类号： G11B7/09 , G11B7/08
CPC分类号： G11B7/0925
摘要： An objective lens actuator drives an objective lens in a radial direction of a disklike recording medium parallel to a face of the recording medium and in a direction of an optical axis vertical to the face of the recording medium such that information can be optically written on or read from the recording medium. The objective lens actuator includes a substantially U-shaped lens holder at an approximately central portion of which the objective lens is supported, a pair of drive members for driving the lens holder, which are provided at opposite end portions of the lens holder, respectively, a base member, and four rodlike elastic members supporting the lens holder. Each of the elastic members has one end fixed to the base member. The other end of each of two of the elastic members is fixed to a distal portion of a first leg of the lens holder adjacent the base member. The other end of each of the other two elastic members is fixed to a proximal portion of a second leg of the lens holder remote from the base member.
摘要翻译：物镜致动器驱动平行于记录介质的表面的盘状记录介质的径向方向的物镜，以及垂直于记录介质的表面的光轴的方向，使得信息可以被光学地写入或从记录介质读取。物镜致动器包括在物镜的大致中央部分处支撑的基本为U形的透镜保持器，分别设置在透镜保持器的相对端部处的用于驱动透镜保持器的一对驱动构件，基部构件和支撑透镜架的四个棒状弹性构件。每个弹性构件具有固定到基座构件的一端。两个弹性构件中的每一个的另一端固定到靠近基座构件的透镜架的第一支腿的远端部分。另外两个弹性构件的另一端固定在远离基座的透镜架的第二支腿的近端部分上。

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