公开(公告)号：US06680883B2

公开(公告)日：2004-01-20

申请号：US10387386

申请日：2003-03-14

申请人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

发明人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

摘要： It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam is passed through a space surrounded by a tracking coil and a focusing coil which are adjacent to each other and fixed in a holder. Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances which are radially extended with the sliding shaft at the center are provided in the lens holder, and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens and a second objective lens are arranged so that the objective lens arrangement angle at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft is displaced, by a predetermined amount, from the magnetic circuit arrangement angle at which the magnetic substances and the magnets are arranged with respect to the shaft center of the sliding shaft.

摘要翻译： 本发明的目的是实现物镜驱动装置的薄型紧凑设计。 为了实现上述目的，光束通过彼此相邻并固定在保持器中的由跟踪线圈和聚焦线圈包围的空间。 此外，另一目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现这个目的，在透镜保持器中设置有以中心的滑动轴径向延伸的磁性物质，并且磁性物质位于垂直于构成磁隙的平面的平面内，并且在 磁隙。 此外，在物镜驱动装置中，另一个目的是防止由于诸如FPC的电流供给装置的阻力而导致的物镜的位置偏移。 为了实现该目的，第一物镜和第二物镜被布置成使得第一和第二物镜相对于滑动轴的轴中心布置的物镜布置角度被移动预定量 从磁性物质和磁体相对于滑动轴的轴心配置的磁路配置角度。

公开(公告)号：US06195314B1

公开(公告)日：2001-02-27

申请号：US08968753

申请日：1997-08-19

申请人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

发明人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

摘要： It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam is passed through a space surrounded by a tracking coil and a focusing coil which are adjacent to each other and fixed in a holder. Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances which are radially extended with the sliding shaft at the center are provided in the lens holder, and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens and a second objective lens are arranged so that the objective lens arrangement angle at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft is displaced, by a predetermined amount, from the magnetic circuit arrangement angle at which the magnetic substances and the magnets are arranged with respect to the shaft center of the sliding shaft.

摘要翻译： 本发明的目的是实现物镜驱动装置的薄型紧凑设计。 为了实现上述目的，光束通过彼此相邻并固定在保持器中的由跟踪线圈和聚焦线圈包围的空间。 此外，另一目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现这个目的，在透镜保持器中设置有以中心的滑动轴径向延伸的磁性物质，并且磁性物质位于垂直于构成磁隙的平面的平面内，并且在 磁隙。 此外，在物镜驱动装置中，另一个目的是防止由于诸如FPC的电流供给装置的阻力而导致的物镜的位置偏移。 为了实现该目的，第一物镜和第二物镜被布置成使得第一和第二物镜相对于滑动轴的轴中心布置的物镜布置角度被移动预定量 从磁性物质和磁体相对于滑动轴的轴心配置的磁路配置角度。

公开(公告)号：US06567352B1

公开(公告)日：2003-05-20

申请号：US09634548

申请日：2000-08-08

申请人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

发明人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

摘要： It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam is passed through a space surrounded by a tracking coil and a focusing coil which are adjacent to each other and fixed in a holder. Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances which are radially extended with the sliding shaft at the center are provided in the lens holder, and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens and a second objective lens are arranged so that the objective lens arrangement angle at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft is displaced, by a predetermined amount, from the magnetic circuit arrangement angle at which the magnetic substances and the magnets are arranged with respect to the shaft center of the sliding shaft.

摘要翻译： 本发明的目的是实现物镜驱动装置的薄型紧凑设计。 为了实现上述目的，光束通过彼此相邻并固定在保持器中的由跟踪线圈和聚焦线圈包围的空间。 此外，另一目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现这个目的，在透镜保持器中设置有以中心的滑动轴径向延伸的磁性物质，并且磁性物质位于垂直于构成磁隙的平面的平面内，并且在 磁隙。 此外，在物镜驱动装置中，另一个目的是防止由于诸如FPC的电流供给装置的阻力而导致的物镜的位置偏移。 为了实现该目的，第一物镜和第二物镜被布置成使得第一和第二物镜相对于滑动轴的轴中心布置的物镜布置角度被移动预定量 从磁性物质和磁体相对于滑动轴的轴心配置的磁路配置角度。