公开(公告)号：US6072607A

公开(公告)日：2000-06-06

申请号：US866444

申请日：1997-05-30

申请人： Atsushi Tajiri ,  Kazushi Mori ,  Keiichi Yodoshi ,  Takao Yamaguchi

发明人： Atsushi Tajiri ,  Kazushi Mori ,  Keiichi Yodoshi ,  Takao Yamaguchi

IPC分类号： G02B27/10 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B7/22 ,  G02B5/32 ,  G02B5/12 ,  G11B7/00

CPC分类号： G11B7/131 ,  G02B27/1006 ,  G02B27/108 ,  G02B27/1093 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/22 ,  H01L2224/05553 ,  H01L2924/19107

摘要： An optical pickup device of the present invention includes a substrate having at least a major surface, a semiconductor laser provided on the surface of the substrate for emitting laser beam, a reflection-type diffraction grating oriented to the semiconductor laser for splitting the laser beam into at least three beams and reflecting them upward, a hologram for receiving the three beams reflected from the reflection-type diffraction grating, and an objective lens for converging onto an optical recording medium the three beams transmitted by the hologram. The three beams reflected from the optical recording medium are focused by the hologram and directed onto the photodetector from the above.

摘要翻译： 本发明的光拾取装置包括至少具有主表面的基板，设置在用于发射激光束的基板的表面上的半导体激光器，定向到用于将激光束分裂的半导体激光器的反射型衍射光栅 至少三个光束并向上反射，用于接收从反射型衍射光栅反射的三个光束的全息图，以及用于会聚到光记录介质上的由全息图传输的三个光束的物镜。 从光记录介质反射的三个光束由全息图聚焦并从上面引导到光电探测器上。

公开(公告)号：US6038203A

公开(公告)日：2000-03-14

申请号：US946591

申请日：1997-10-07

申请人： Atsushi Tajiri ,  Kazushi Mori ,  Yasuaki Inoue ,  Takenori Goto

发明人： Atsushi Tajiri ,  Kazushi Mori ,  Yasuaki Inoue ,  Takenori Goto

IPC分类号： G11B7/135 ,  G11B7/12 ,  G11B7/22 ,  G11B7/125

CPC分类号： G11B7/1353 ,  G11B7/123 ,  G11B7/22

摘要： A semiconductor laser device is mounted on the side of one end surface on lead frame in a recess of an insulating molding member, a three-beam generating diffraction grating is disposed in the center, and a transmission type holographic optical element is disposed on the side of the other end surface. After a flexible circuit board is fixed to the lower surfaces of leads and the lead frame, a photodiode for a signal detection is mounted on the surface of the flexible circuit board, and is so folded upward as to be perpendicular to the upper surface of the lead frame. The insulating molding member is mounted on the one end surface of the insulating molding member through a circular screw through a hole and an elliptic screw through a hole by screws.

摘要翻译： 半导体激光装置安装在绝缘模制构件的凹部中的引线框架的一个端面的侧面上，三光束产生衍射光栅设置在中心，透射型全息光学元件设置在侧面 的另一端面。 在柔性电路板固定到引线和引线框架的下表面之后，用于信号检测的光电二极管安装在柔性电路板的表面上，并且被向上折叠成垂直于 引线框架 绝缘成型构件通过圆孔螺钉穿过绝缘成型构件的一端表面安装，椭圆形螺钉通过螺钉穿过孔安装。

公开(公告)号：US6023448A

公开(公告)日：2000-02-08

申请号：US997742

申请日：1997-12-24

申请人： Atsushi Tajiri ,  Takenori Goto ,  Yasuaki Inoue ,  Kazushi Mori ,  Minoru Sawada ,  Akira Ibaraki

发明人： Atsushi Tajiri ,  Takenori Goto ,  Yasuaki Inoue ,  Kazushi Mori ,  Minoru Sawada ,  Akira Ibaraki

IPC分类号： G11B7/12 ,  G11B7/125 ,  G11B7/135 ,  G11B7/22 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/123 ,  G11B7/127 ,  G11B7/22

摘要： An optical pickup device has a case constructed by joining a lower frame member and an upper frame member. A semiconductor laser device, a three-beam generating diffraction grating, a transmission type holographic optical element, and a reflecting mirror are arranged in the lower frame member. A lead frame is arranged in the lower frame member. The semiconductor laser device is arranged on the lead frame through a heat sink, to emit laser light in a horizontal direction. A photodiode and the lead frame are arranged in the upper frame member. The photodiode has a light receiving surface parallel to the direction of light emission from the semiconductor laser device, and is mounted on the lead frame. The laser light emitted from the semiconductor laser device passes through the three-beam generating diffraction grating and the transmission type holographic optical element, and is then bent upward and introduced into an optical recording medium. Returned light reflected from a recording surface of the optical recording medium is changed in a direction parallel to the direction of light emission from the semiconductor laser device, passes through the transmission type holographic optical element and the three-beam generating diffraction grating again, is then changed vertically upward by the reflecting mirror, and is incident on the photodiode.

摘要翻译： 光学拾取装置具有通过连接下框架构件和上框架构件构成的壳体。 半导体激光装置，三光束产生衍射光栅，透射型全息光学元件和反射镜布置在下部框架构件中。 引导框架布置在下框架构件中。 半导体激光器件通过散热器布置在引线框架上，以沿水平方向发射激光。 光电二极管和引线框架布置在上框架构件中。 光电二极管具有与半导体激光装置的发光方向平行的受光面，安装在引线框上。 从半导体激光装置发射的激光通过三光束产生衍射光栅和透射型全息光学元件，然后向上弯曲并被引入光记录介质。 从光记录介质的记录表面反射的返回光在与半导体激光装置的发光方向平行的方向上变化，然后再次通过透射型全息光学元件和三光束产生衍射光栅 由反射镜垂直向上变化，入射到光电二极管上。