公开(公告)号：US06429981B2

公开(公告)日：2002-08-06

申请号：US09782525

申请日：2001-02-14

申请人： Ko Ishii ,  Shinichi Takahashi ,  Mitsutoshi Sugano ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Makoto Kawamura ,  Akira Miura ,  Masayuki Koyama

发明人： Ko Ishii ,  Shinichi Takahashi ,  Mitsutoshi Sugano ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Makoto Kawamura ,  Akira Miura ,  Masayuki Koyama

IPC分类号： G02B702

CPC分类号： G11B7/1374 ,  G11B7/08505 ,  G11B7/0925 ,  G11B7/0945 ,  G11B7/127 ,  G11B7/131 ,  G11B2007/0006

摘要： An optical pickup apparatus includes a semiconductor laser device having a plurality of light emitting portions for emitting laser beams having different wavelengths on a substrate for emitting a laser beam from one of the plurality of light emitting portions in response to a light emitter selecting instruction in the same emitting direction. The laser beam emitted from the semiconductor laser device is converged by an objective lens and led to a recording surface of an optical disk, and the objective lens is moved to one of a plurality of different positions in a radial direction of the optical disk, corresponding to the selected light emitting portion.

摘要翻译： 一种光拾取装置，包括：半导体激光装置，具有多个发光部，用于在基板上发射具有不同波长的激光束，用于响应于所述多个发光部中的发光选择指令发射来自所述多个发光部中的一个的激光束 相同的发射方向。 从半导体激光装置发射的激光束被物镜会聚并被引导到光盘的记录面，物镜移动到光盘的径向上的多个不同位置之一，对应于 到所选择的发光部分。

公开(公告)号：US06452880B1

公开(公告)日：2002-09-17

申请号：US09704822

申请日：2000-11-03

申请人： Makoto Kawamura ,  Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Akira Miura ,  Masayuki Koyama

发明人： Makoto Kawamura ,  Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Akira Miura ,  Masayuki Koyama

IPC分类号： G11B700

CPC分类号： G11B7/127 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/123 ,  G11B7/131 ,  G11B2007/0006

摘要： An optical pickup apparatus capable of reading information from recording media of different read wavelengths, includes a light-emitter having a first light source for emitting a first laser beam integrated with a second light source for emitting a second laser beam of a different wavelength from that of the first laser beam. The optical pickup apparatus includes a photodetector for receiving a beam reflected by each of the recording media and an optical system having a plurality of optical elements which form an optical path to guide the first and second laser beams to the recording media and which form an optical path for guiding the reflected beam to the photodetector and through which the first and second laser beams pass.

摘要翻译： 一种能够从不同读取波长的记录介质读取信息的光拾取装置，包括具有第一光源的发光器，该第一光源用于发射与第二光源成一体的第一激光束，用于发射与第二光源不同波长的第二激光束 的第一激光束。 光学拾取装置包括用于接收由每个记录介质反射的光束的光电检测器和具有多个光学元件的光学系统，光学系统形成光路以将第一和第二激光束引导到记录介质并形成光学 用于将反射光束引导到光电检测器并且第一和第二激光束通过该路径。

公开(公告)号：US06912234B2

公开(公告)日：2005-06-28

申请号：US09770673

申请日：2001-01-29

申请人： Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Makoto Kawamura ,  Akira Miura ,  Masayuki Koyama

发明人： Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Makoto Kawamura ,  Akira Miura ,  Masayuki Koyama

IPC分类号： G11B7/135 ,  G11B7/00 ,  G11B7/12 ,  G11B7/125 ,  H01S5/022 ,  H01S5/40 ,  H01S3/10

CPC分类号： G11B7/1275 ,  G11B7/123 ,  G11B2007/0006

摘要： An optical pickup apparatus and a laser diode chip which can simplify and miniaturize a construction of the apparatus is provided for using a plurality of laser beams of different wavelengths. The laser diode chip is a chip for the optical pickup apparatus in which a plurality of light emitting portions for emitting the laser beams of the different wavelengths in the same emitting direction are formed on a substrate. Light emitting points of the plurality of light emitting portions are located at positions which are different in the emitting direction.

摘要翻译： 提供了可以简化和小型化该装置的结构的光学拾取装置和激光二极管芯片，用于使用多个不同波长的激光束。 激光二极管芯片是用于光学拾取装置的芯片，其中在基板上形成用于发射具有相同发射方向的不同波长的激光束的多个发光部分。 多个发光部的发光点位于发射方向不同的位置。

公开(公告)号：US06480456B1

公开(公告)日：2002-11-12

申请号：US09704063

申请日：2000-11-02

申请人： Makoto Kawamura ,  Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Akira Miura ,  Masayuki Koyama

发明人： Makoto Kawamura ,  Shinichi Takahashi ,  Hirokatsu Nagatake ,  Aki Yoshioka ,  Mitsutoshi Sugano ,  Ko Ishii ,  Akira Miura ,  Masayuki Koyama

IPC分类号： G11B700

CPC分类号： G11B7/127 ,  G11B7/123 ,  G11B7/131 ,  G11B2007/0006

摘要： An optical pickup apparatus which supports two wavelengths and is amenable to a reduction in size without employing a combining prism. The optical pickup apparatus employs a semiconductor laser device implemented in the form of a one-chip laser diode having two light sources for emitting a first laser beam and a second laser beam at a wavelength different from that of the first laser beam. A photodetector unit has a first detector section for receiving the first laser beam and a second detector section for receiving the second laser beam, and is set at positions at which the first and second laser beams follow return light paths of different lengths from an optical disc to the first and second detector sections.

摘要翻译： 一种支持两种波长且适于减小尺寸而不使用组合棱镜的光学拾取装置。 光拾取装置采用以具有两个光源的单芯片激光二极管形式实现的半导体激光器件，用于发射与第一激光束的波长不同的第一激光束和第二激光束。 光电检测器单元具有用于接收第一激光束的第一检测器部分和用于接收第二激光束的第二检测器部分，并且被设置在第一和第二激光束跟随与光盘不同长度的返回光路的位置 到第一和第二检测器部分。