公开(公告)号：US06798819B1

公开(公告)日：2004-09-28

申请号：US09512313

申请日：2000-02-24

申请人： Tohru Hotta ,  Ikuo Kasuga

发明人： Tohru Hotta ,  Ikuo Kasuga

IPC分类号： H01S308

CPC分类号： G11B7/1362 ,  G11B7/22

摘要： A deflector deflects laser light emitted from a laser light emitting device. A lens driver moves an objective lens for conversing the laser light deflected by the deflector onto an optical recording disk in a focusing direction and a tracking direction thereof. A frame member supports the laser light emitting device, the deflector and the lens driver. The deflector is positioned such that the center of an intensity distribution of the laser light is aligned with an optical axis of the objective lens.

摘要翻译： 偏转器偏转从激光发射装置发射的激光。 透镜驱动器使物镜移动，以将由偏转器偏转的激光转向聚焦方向和跟踪方向的光记录盘上。 框架构件支撑激光发射装置，偏转器和透镜驱动器。 偏转器被定位成使得激光的强度分布的中心与物镜的光轴对准。

公开(公告)号：US06369963B1

公开(公告)日：2002-04-09

申请号：US09611273

申请日：2000-07-06

申请人： Tohru Hotta ,  Ikuo Kasuga ,  Katsushige Yanagisawa

发明人： Tohru Hotta ,  Ikuo Kasuga ,  Katsushige Yanagisawa

IPC分类号： G02B702

CPC分类号： G11B7/082 ,  G02B7/10 ,  G11B7/08582

摘要： An optical pickup apparatus has an objective lens, a lens holder that mounts the objective lens, a main frame holding the lens holder, and first and second inclination angle adjusting mechanism for adjusting angles of inclination of the objective lens. A main shaft guide frame is mounted on one side of the main frame. A main shaft mounted on the main shaft guide frame for guiding the objective lens in a radial direction of an optical disc. An auxiliary shaft guide frame is mounted on another side of the main frame. An auxiliary shaft is mounted on the auxiliary shaft guide groove to allow the objective lens to slidably move in parallel with the main shaft. The first inclination angle adjusting mechanism has a first bearing shaft for rotatably supporting the main shaft guide frame about a first axis with respect to the main frame. The main shaft defines a second axis extending generally in parallel with the main shaft and perpendicular to the first axis. The second inclination angle adjusting mechanism has a second bearing shaft for rotatably supporting an auxiliary shaft guide frame with respect to the main frame about a third axis that is located between the main shaft and the auxiliary shaft and extends in parallel with the second axis.

摘要翻译： 光学拾取装置具有物镜，安装物镜的透镜保持架，保持透镜保持架的主框架，以及用于调节物镜的倾斜角度的第一和第二倾斜角度调节机构。 主轴引导框架安装在主框架的一侧。 安装在主轴引导框架上的主轴，用于在光盘的径向方向上引导物镜。 辅助轴引导框架安装在主框架的另一侧。 辅助轴安装在辅助轴引导槽上，以允许物镜与主轴平行地滑动移动。 第一倾斜角调节机构具有第一轴承轴，用于相对于主框架围绕第一轴线可旋转地支撑主轴引导框架。 主轴限定大致平行于主轴并垂直于第一轴线延伸的第二轴线。 第二倾斜角调节机构具有第二轴承轴，用于相对于主框架围绕位于主轴和辅助轴之间并与第二轴线平行延伸的第三轴线可旋转地支撑辅助轴引导框架。

公开(公告)号：US5599864A

公开(公告)日：1997-02-04

申请号：US316470

申请日：1994-10-03

申请人： Shogo Ogawa ,  Hajime Hata ,  Ikuo Kasuga ,  Hiromasa Marumo ,  Masamichi Hayakawa

发明人： Shogo Ogawa ,  Hajime Hata ,  Ikuo Kasuga ,  Hiromasa Marumo ,  Masamichi Hayakawa

IPC分类号： C08K3/00 ,  C08K3/38 ,  C08K7/04 ,  C08K5/01

CPC分类号： C08K3/38 ,  C08K3/0033 ,  C08K7/04

摘要： A polyarylene sulfide resin composition having an excellent fluidability and a good moldability is disclosed. The resin composition is useful as a material for an optical pick-up part which has a high reliability and a high tenacity and does not generate deviation of an optical axis with changes in environmental conditions such as temperature and humidity. The polyarylene sulfide resin composition comprises, as main components, a polyarylene sulfide resin, a fibrous filler and a particulate filler, and, optionally, a silane coupling agent and an alicyclic hydrocarbon.

摘要翻译： 公开了具有优异的流动性和良好成型性的聚芳硫醚树脂组合物。 该树脂组合物可用作光学拾取部件的材料，其具有高可靠性和高韧性，并且不会随温度和湿度等环境条件的变化而产生光轴的偏差。 作为主要成分，聚芳硫醚树脂组合物包括聚芳硫醚树脂，纤维状填料和颗粒填料，以及任选的硅烷偶联剂和脂环族烃。

公开(公告)号：US5496993A

公开(公告)日：1996-03-05

申请号：US95193

申请日：1993-07-23

申请人： Ikuo Kasuga

发明人： Ikuo Kasuga

IPC分类号： G02B27/09 ,  G02B3/06 ,  G02B5/04 ,  G02B27/00 ,  G11B7/125 ,  G11B7/135 ,  G02B7/04

CPC分类号： G02B27/0025 ,  G02B3/06 ,  G02B5/04 ,  G11B7/1365 ,  G11B7/1381

摘要： Disclosed is an optical pickup device comprising a light source for irradiating a light beam onto an object from a light source, a half mirror for introducing said light beam reflected by the object to an optical detector; and a wedge-shaped photosensitive element, disposed between said half mirror and said optical detector, for cancelling out a coma produced by said half mirror.

摘要翻译： 公开了一种光拾取装置，包括用于将光束从光源照射到物体上的光源，用于将由物体反射的所述光束引入光检测器的半反射镜; 以及设置在所述半反射镜和所述光学检测器之间的楔形感光元件，用于消除由所述半反射镜产生的彗差。

公开(公告)号：US06522619B2

公开(公告)日：2003-02-18

申请号：US09728059

申请日：2000-12-04

申请人： Katsushige Yanagisawa ,  Tohru Hotta ,  Ikuo Kasuga ,  Toshihiko Okina ,  Satoru Kishita ,  Hidenori Sai

发明人： Katsushige Yanagisawa ,  Tohru Hotta ,  Ikuo Kasuga ,  Toshihiko Okina ,  Satoru Kishita ,  Hidenori Sai

IPC分类号： G11B700

CPC分类号： G11B7/127 ,  G11B7/12 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pick-up device (1) includes a laser diode (2) for recording which acts as a fixation side light source attached to an attachment portion (5) of a device frame (4) and has a great calorific value, and a laser diode (3) for reproduction which acts as an adjustment side light source held in a holder (6) fixed with an adhesive (7) in a clearance (46) provided on a side surface (45) of the device frame. Heat generated from the laser diode (2) for recording is radiated efficiently through the device frame (4), and heat generated from the laser diode (3) is also radiated efficiently through the holder (6) fixed with the adhesive (7) which is partially filled for the device frame (4) with the clearance (46) formed.

摘要翻译： 光学拾取装置（1）包括用于记录的激光二极管（2），其用作安装在装置框架（4）的附接部分（5）上并具有高热值的固定侧光源，以及 用于再现的激光二极管（3），其用作调节侧光源，其保持在设置在设备框架的侧表面（45）上的间隙（46）中用粘合剂（7）固定的保持器（6）中。 从用于记录的激光二极管（2）产生的热量通过装置框架（4）有效地辐射，并且激光二极管（3）产生的热也有效地通过固定有粘合剂（7）的保持器（6）辐射， 部分地填充有形成有间隙（46）的装置框架（4）。

公开(公告)号：US6125091A

公开(公告)日：2000-09-26

申请号：US70001

申请日：1998-04-30

申请人： Ikuo Kasuga

发明人： Ikuo Kasuga

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

CPC分类号： G11B7/127 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B2007/0006

摘要： An optical pickup apparatus comprises a first semiconductor laser, a first beam splitter which partially reflects or transmits a laser beam generated by the first semiconductor laser in a given direction, a second semiconductor laser which emits a laser beam having a different wave length from the laser beam of the first semiconductor laser, a second beam splitter which partially reflects or transmits the laser beam generated by the second semiconductor laser in a given direction, a single photodetector which receives laser beams from the first and second semiconductor lasers when the laser beams are reflected by a recording medium, and a first reflective portion which is formed on the first beam splitter. The first reflective portion partially reflects a given polarized light beam from the first semiconductor laser and transmits a polarized light beam from the second semiconductor laser beam, which differs from the given polarized light beam. A second reflective portion is formed on the second beam splitter. The second reflective portion partially reflects a given polarized light beam from the second semiconductor laser and transmits a polarized light beam from the first semiconductor laser beam, which differs from the given polarized light beam.

摘要翻译： 一种光拾取装置，包括第一半导体激光器，在给定方向上部分地反射或透射由第一半导体激光器产生的激光束的第一分束器，从激光器发射具有不同波长的激光束的第二半导体激光器 第一半导体激光器的光束，在给定方向上部分地反射或透射由第二半导体激光器产生的激光束的第二分束器，当激光束被反射时接收来自第一和第二半导体激光器的激光束的单个光电检测器 通过记录介质和形成在第一分束器上的第一反射部分。 第一反射部分部分地反射来自第一半导体激光器的给定偏振光束，并且透射来自与给定偏振光束不同的第二半导体激光束的偏振光束。 第二反射部分形成在第二分束器上。 第二反射部分部分地反射来自第二半导体激光器的给定偏振光束，并且透射来自与给定偏振光束不同的第一半导体激光束的偏振光束。

公开(公告)号：US5844881A

公开(公告)日：1998-12-01

申请号：US494224

申请日：1995-06-23

申请人： Ikuo Kasuga ,  Fumio Kobayashi ,  Toru Kamada ,  Akihiko Okumura

发明人： Ikuo Kasuga ,  Fumio Kobayashi ,  Toru Kamada ,  Akihiko Okumura

IPC分类号： G11B7/09 ,  G02B7/02 ,  G11B21/10

CPC分类号： G11B7/0933 ,  G11B7/093

摘要： An objective lens driving device includes drive coils mounted on one of a lens holder bearing an objective lens and a stationary member; magnets mounted on the other in such a manner that said drive coils are confronted with the magnets, and the lens holder is moved in a focusing direction and a tracking direction by application of current to the drive coils; and magnetic pieces arranged in magnetic circuits including the magnets, so that magnetic attraction forces acting on the magnetic pieces produce restoring forces two-dimensionally in the focusing direction and in the tracking direction to hold the objective lens at a neutral point. The magnetic pieces are so arranged that, at the neutral point, the drive coils are confronted straightly with the magnets.

摘要翻译： 物镜驱动装置包括驱动线圈，其安装在承载物镜和固定构件的透镜架之一上; 磁体以使得所述驱动线圈面对磁铁的方式安装在另一个上，并且透镜架通过向驱动线圈施加电流而沿聚焦方向和跟踪方向移动; 以及磁性片布置在包括磁体的磁路中，使得作用在磁性片上的磁吸引力在聚焦方向和跟踪方向上二维地产生恢复力，以将物镜保持在中性点。 磁片的布置使得在中性点，驱动线圈与磁铁直接相对。

公开(公告)号：US5761174A

公开(公告)日：1998-06-02

申请号：US523147

申请日：1995-09-05

申请人： Tadashi Takeda ,  Yoshio Hayashi ,  Ikuo Kasuga ,  Kazuo Higashiura ,  Noriyuki Satoh ,  Hisahiro Ishihara

发明人： Tadashi Takeda ,  Yoshio Hayashi ,  Ikuo Kasuga ,  Kazuo Higashiura ,  Noriyuki Satoh ,  Hisahiro Ishihara

IPC分类号： G11B7/09 ,  G11B7/135

CPC分类号： G11B7/0916 ,  G11B7/0903 ,  G11B7/0908 ,  G11B7/1353 ,  G11B7/1381

摘要： An optical pickup device includes a light source irradiating a record medium with plural light spots of light emitted therefrom, a plurality of light detecting elelments to which reflected light of the light spots are guided, respectively, to adequately synthesize and compare outputs of said light detecting elements, thereby reading information recorded in tracks of the record medium, and detecting an tracking error and a focusing error, and a hologram element which splits light emitted from the light source into plural beams is disposed in an optical path between the light source and the record medium, said hologram element is split by a split line, said split line elongating in a direction perpendicular to a track of the medium on an optical axis, and a hologram pattern having a diffraction function which is substantially directed in the track direction is disposed on at least one side of said split line, thereby differentiating diffraction conditions on both sides of said split line from each other.

摘要翻译： 一种光学拾取装置包括：一个光源，用于照射具有从其发出的光的多个光点的记录介质，分别引导光点的反射光的多个光检测元件，以充分合成并比较所述光检测的输出 从而读取记录在记录介质的轨道中的信息，并且检测跟踪误差和聚焦误差，并且将从光源发射的光分解成多个光束的全息元件设置在光源和光源之间的光路中 记录介质，所述全息元件被分割线分开，所述分割线在垂直于光轴上的介质的轨道的方向上延伸，并且设置具有基本上指向轨道方向的衍射函数的全息图图案 在所述分割线的至少一侧上，从而使所述分割线的两侧的衍射条件有差异 从彼此。

公开(公告)号：US4998802A

公开(公告)日：1991-03-12

申请号：US357314

申请日：1989-05-25

申请人： Ikuo Kasuga ,  Toru Kamada ,  Fumio Kobayashi

发明人： Ikuo Kasuga ,  Toru Kamada ,  Fumio Kobayashi

IPC分类号： G11B7/09

CPC分类号： G11B7/093 ,  G11B7/0932

摘要： An objective lens driving device is disclosed, in which the objective lens is moved in the direction of the optical axis thereof by a thrusting force generated between a magnet for focusing and a driving coil for focusing to effect focusing and it is moved in the direction perpendicular to that of the optical axis thereof by another thrusting force generated between a magnet for tracking and a driving coil for tracking to effect tracking.

摘要翻译： 公开了一种物镜驱动装置，其中物镜通过在用于聚焦的磁体和用于聚焦的驱动线圈之间产生的推力在其光轴方向上移动以实现聚焦，并且其在垂直方向上移动 通过在用于跟踪的磁体和用于跟踪的驱动线圈之间产生的另一个推力产生光轴的光轴来实现跟踪。

公开(公告)号：US5541898A

公开(公告)日：1996-07-30

申请号：US538836

申请日：1995-10-04

申请人： Ikuo Kasuga ,  Toru Kamada ,  Fumio Kobayashi ,  Yasuyuki Nakahara

发明人： Ikuo Kasuga ,  Toru Kamada ,  Fumio Kobayashi ,  Yasuyuki Nakahara

IPC分类号： G11B7/09 ,  G11B7/22 ,  G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/22

摘要： An objective lens-driving used in the optical pickup of an optical disk drive. The device comprises an objective lens holder for holding an objective lens, a sheet coil, and a counterbalance mounted on the opposite side of the objective lens. The sheet coil comprises an insulating sheet on which focusing helical coil patterns and tracking helical coil patterns are juxtaposed. The holder has sheet-holding portions of an arc-shaped cross section. The focusing and tracking coil patterns are formed on the curved surfaces of the sheet-holding portions. Focusing magnets are mounted opposite to the focusing coil patterns. Tracking magnets are mounted opposite to the tracking coil patterns.

摘要翻译： 用于光盘驱动器的光学拾取器中的物镜驱动。 该装置包括用于保持物镜，片状线圈和安装在物镜的相对侧上的平衡物的物镜保持器。 片状线圈包括绝缘片，聚焦螺旋线圈图案和跟踪螺旋线圈图案并置在该绝缘片上。 保持器具有弧形截面的片材保持部分。 聚焦跟踪线圈图案形成在片材保持部分的曲面上。 聚焦磁体与聚焦线圈图案相对安装。 跟踪磁体安装在跟踪线圈图案的相对侧。