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    Optical head device and optical recording and reproducing apparatus having lasers aligned in a tangential direction
    32.
    发明授权
    Optical head device and optical recording and reproducing apparatus having lasers aligned in a tangential direction 有权
    具有沿切线方向排列的激光的光学头装置和光学记录和再现装置

    公开(公告)号：US07035196B2

    公开(公告)日：2006-04-25

    申请号：US09804492

    申请日：2001-03-12

    申请人： Shoichi Takasuka ,  Yukio Saitoh ,  Naoki Nakanishi ,  Hideyuki Nakanishi

    发明人： Shoichi Takasuka ,  Yukio Saitoh ,  Naoki Nakanishi ,  Hideyuki Nakanishi

    IPC分类号： B11B7/125 ,  B11B7/13

    CPC分类号： G11B7/127 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353

    摘要： A semiconductor laser element has the following configuration: a dual-wavelength monolithic laser where semiconductor lasers with emission wavelengths of 650 nm and 780 nm are integrated on one chip is soldered on a heat sink which then is soldered on a can package. Two beam emission points of the semiconductor laser element are positioned so that beam spots, formed on an optical disk, of light beams emitted from the two semiconductor lasers are aligned substantially along a pit-row direction in the optical disk. Thus, an optical head device and an optical recording and reproducing apparatus can be obtained that can record information on or reproduce recorded information from optical information recording media with different optical characteristics and recording densities from one another and that do not cause instability in tracking servo operation.

    摘要翻译： 半导体激光器元件具有以下配置：将一个芯片上集成有发射波长为650nm和780nm的半导体激光器的双波长单片激光器焊接在散热器上，然后将其焊接在罐头封装上。 定位半导体激光元件的两个光束发射点，使得形成在光盘上的从两个半导体激光器发射的光束的光斑基本上沿着光盘中的凹坑行方向排列。 因此，可以获得能够从具有不同光学特性和记录密度的光学信息记录介质记录信息或再现记录信息的光学头装置和光学记录和再现装置，并且不会导致跟踪伺服操作的不稳定 。

    Lens driving device, an optical pickup including the lens driving device, and a production method for the lens driving device
    34.
    发明授权
    Lens driving device, an optical pickup including the lens driving device, and a production method for the lens driving device 失效
    透镜驱动装置，包括透镜驱动装置的光学拾取器以及用于透镜驱动装置的制造方法

    公开(公告)号：US06665238B2

    公开(公告)日：2003-12-16

    申请号：US09820076

    申请日：2001-03-28

    申请人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    发明人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    IPC分类号： G11B700

    CPC分类号： G11B7/0932

    摘要： A lens holding member carrying an objective lens is movable and supported by a fixed member via a plurality of supporting members. Each supporting member includes a bent part in its base portion on the side of the fixed member. The bent part is bent in a first direction (focusing direction) and a second direction (tracking direction) that are perpendicular to each another. Each supporting member is shaped so as to make all the principal planes of the supporting member parallel to the second direction. The fixed member includes a concave, which is impregnated with a gel material so that the bent part is covered with the gel material.

    摘要翻译： 携带物镜的透镜保持构件可通过多个支撑构件由固定构件移动并支撑。 每个支撑构件在其固定构件侧的基部中包括弯曲部分。 弯曲部分在彼此垂直的第一方向（聚焦方向）和第二方向（跟踪方向）上弯曲。 每个支撑构件被成形为使得支撑构件的所有主平面平行于第二方向。 固定构件包括凹部，其被凝胶材料浸渍，使得弯曲部分被凝胶材料覆盖。

    Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the same
    35.
    发明授权
    Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the same 有权
    光电检测器单元，光拾取器，光学再现装置和配备有其的光学记录装置

    公开(公告)号：US06597642B1

    公开(公告)日：2003-07-22

    申请号：US09709929

    申请日：2000-11-10

    申请人： Shinichi Ijima ,  Shoichi Takasuka ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    发明人： Shinichi Ijima ,  Shoichi Takasuka ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1356 ,  G11B11/10543 ,  G11B11/10576 ,  G11B11/10597 ,  G11B2007/0006

    摘要： An optical pickup that is equipped with a photodetector unit, irradiates an optical disc with a laser beam, and receives returning light reflected by the optical disc, where the optical pickup is constructed to (1) divide the laser beam into a main beam, a preceding sub-beam, and a succeeding sub-beam, (2) direct the main beam, the preceding sub-beam, and the succeeding sub-beam toward the optical disc, and (3) divide returning lights of the main beam, the preceding sub-beam, and the succeeding sub-beam respectively into first-fourth main returning lights, first-fourth preceding returning lights, and first-fourth succeeding returning lights, and the photodetector unit includes: first-fourth main photodetectors that respectively receive the first-fourth main returning lights; first-fourth preceding photodetectors that respectively receive the first-fourth preceding returning lights; and first-fourth succeeding photodetectors that respectively receive the first-fourth succeeding returning lights. A tracking error signal appropriate to the optical disc to be reproduced is selected from three tracking error signals detected according to the detection signals from the photodetectors, and a tracking servo is driven according to the selected tracking error signal.

    摘要翻译： 具有光检测器单元的光学拾取器，用激光束照射光盘，并接收由光盘反射的返回光，其中光学拾取器被构造为（1）将激光束分割成主光束， 前面的子光束和后续的子光束，（2）将主光束，前一个子光束和后一个子光束指向光盘，以及（3）分割主光束的返回光， 分别将前次侧光束和后续子光束分别插入第一至第四主回光灯，第一至第四返回灯和第四后续返回光，并且光检测器单元包括：第一至第四主光电检测器，分别接收 第四回主灯; 分别接收前四个返回光的前四分之一的光电检测器; 以及分别接收第一至第四个后续返回光的第一至第四后续光电检测器。 从根据来自光电检测器的检测信号检测的三个跟踪误差信号中选择适合于要再现的光盘的跟踪误差信号，并且根据所选择的跟踪误差信号来驱动跟踪伺服。

    Lead frame which includes a die pad, a support lead, and inner leads
    36.
    发明授权
    Lead frame which includes a die pad, a support lead, and inner leads 有权
    引线框架，其包括管芯焊盘，支撑引线和内部引线

    公开(公告)号：US06501156B1

    公开(公告)日：2002-12-31

    申请号：US09657484

    申请日：2000-09-08

    申请人： Hideyuki Nakanishi ,  Shin'ichi Ijima ,  Akio Yoshikawa ,  Ryuma Hirano

    发明人： Hideyuki Nakanishi ,  Shin'ichi Ijima ,  Akio Yoshikawa ,  Ryuma Hirano

    IPC分类号： H01L2312

    CPC分类号： H01L23/49568 ,  H01L23/49503 ,  H01L23/49541 ,  H01L23/49548 ,  H01L31/0203 ,  H01L33/62 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A lead frame includes a die pad including a die pad main portion having a large thickness and a die pad peripheral portion having an intermediate thickness smaller than that of the die pad main portion, provided on at least one side of the die pad main portion, at least one support lead connected to the die pad, and at least two first inner leads having a small thickness smaller than that of the die pad peripheral portion, arranged such that end portions thereof are opposed to the die pad peripheral portion. The thick die pad provides good heat release properties, and reducing the thickness of the leads allows fine pitched leads to be produced. Such a lead frame can be manufactured easily by press stamping after belt-shaped regions having different thickness are formed by rolling.

    摘要翻译： 引线框架包括：芯片焊盘，其包括具有大厚度的管芯焊盘主体部分和设置在管芯焊盘主体部分的至少一侧上的中间厚度小于管芯焊盘主体部分的中间厚度的焊盘周边部分; 连接到管芯焊盘的至少一个支撑引线，以及至少两个第一内部引线，其小于管芯焊盘周边部分的厚度的小的第一内部引线，其布置成使其端部与管芯焊盘周边部分相对。 厚芯片提供良好的散热性能，并且减小引线的厚度可以产生精细的引线。 通过轧制形成具有不同厚度的带状区域之后，可以通过冲压加工容易地制造这种引线框架。

    Semiconductor laser device
    38.
    发明授权
    Semiconductor laser device 失效
    半导体激光器件

    公开(公告)号：US06192020B1

    公开(公告)日：2001-02-20

    申请号：US09164726

    申请日：1998-10-01

    申请人： Shouichi Takasuka ,  Shin-ichi Ijima ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    发明人： Shouichi Takasuka ,  Shin-ichi Ijima ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    IPC分类号： G11B712

    CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1362 ,  G11B11/10543

    摘要： A semiconductor laser device includes a semiconductor laser element for emitting laser light onto a recording medium; beam dividing element provided in an optical path between the semiconductor laser element and the recording medium; a hologram optical element including a diffraction grating formed in a light-transmitting substrate, the hologram optical element located in an optical path between the beam dividing element and the semiconductor laser element; a servo-signal light-receiving element provided in an optical path of diffracted light transmitted through the diffraction grating for receiving the diffracted light; an information-signal light-receiving element for receiving light divided by the beam-dividing element, which is different from light divided by the beam-dividing element which is received by the diffraction grating; and a polarizing element provided in an optical path between the beam dividing element and the information-signal light-receiving element, wherein the semiconductor laser element, the servo-signal light-receiving element and the information-signal light-receiving element are provided within a single package, and the information-signal light-receiving element is provided outside an optical path of every order of diffracted light transmitted through the diffraction grating.

    摘要翻译： 半导体激光器件包括用于将激光发射到记录介质上的半导体激光元件; 光束分割元件，设置在半导体激光元件和记录介质之间的光路中; 全息光学元件，包括形成在透光衬底中的衍射光栅，位于光束分割元件和半导体激光元件之间的光路中的全息光学元件; 设置在透过衍射光栅的衍射光的光路中的用于接收衍射光的伺服信号光接收元件; 信息信号光接收元件，用于接收由所述光束分割元件分开的光，所述光与由所述衍射光栅接收的所述光束分割元件分开的光不同; 以及偏振元件，设置在所述光束分割元件和所述信息信号光接收元件之间的光路中，其中，所述半导体激光元件，所述伺服信号光接收元件和所述信息信号光接收元件设置在 单个封装，并且信息信号光接收元件设置在透射通过衍射光栅的每个衍射光的光路的外侧。

    Method of etching semiconductor substrate
    39.
    发明授权
    Method of etching semiconductor substrate 失效
    蚀刻半导体衬底的方法

    公开(公告)号：US5478438A

    公开(公告)日：1995-12-26

    申请号：US175629

    申请日：1993-12-30

    申请人： Hideyuki Nakanishi ,  Akira Ueno ,  Hideo Nagai ,  Akio Yoshikawa

    发明人： Hideyuki Nakanishi ,  Akira Ueno ,  Hideo Nagai ,  Akio Yoshikawa

    IPC分类号： H01L21/306 ,  H01L21/308 ,  H01L21/00

    CPC分类号： H01L21/308 ,  Y10S438/942

    摘要： A method of performing anisotropic etching more than once with respect to a semiconductor substrate (1) is provided with the steps of performing first-time anisotropic etching by using a first etching mask (2) so as to form a first anisotropically etched region (4) which is hollow, forming a second etching mask (7) over the first etching mask (2), performing second-time anisotropic etching by using the second etching mask (7), and previously forming the first etching mask (2) from a material which is resistant to an etchant used for patterning the second etching mask (7) before the first-time anisotropic etching is performed. Thus, the edge portion (6) of the first etched region (4) is protected so that its configuration is excellently maintained. By way of example, either of the etching masks is composed of a dielectric material such as a silicon dioxide film, while the other etching mask is composed of a metallic material such as Au and Ti, and the second-time anisotropic etching is performed by using diluted potassium hydroxide.

    摘要翻译： 提供相对于半导体衬底（1）多次执行各向异性蚀刻的方法，具有通过使用第一蚀刻掩模（2）进行第一次各向异性蚀刻以形成第一各向异性蚀刻区域（4）的步骤 ），在第一蚀刻掩模（2）上形成第二蚀刻掩模（7），通过使用第二蚀刻掩模（7）进行第二次各向异性蚀刻，并从第一蚀刻掩模（2）预先形成第一蚀刻掩模 在进行第一次各向异性蚀刻之前，耐蚀刻用于图案化第二蚀刻掩模（7）的蚀刻剂的材料。 因此，第一蚀刻区域（4）的边缘部分（6）被保护，使得其构造被良好地保持。 作为示例，蚀刻掩模中的任一个由诸如二氧化硅膜的介电材料构成，而另一个蚀刻掩模由诸如Au和Ti的金属材料构成，并且第二次各向异性蚀刻通过 使用稀释的氢氧化钾。

    Optoelectronic device
    40.
    发明授权
    Optoelectronic device 有权
    光电器件

    公开(公告)号：US07064898B1

    公开(公告)日：2006-06-20

    申请号：US10129809

    申请日：2000-11-08

    申请人： Shoichi Takasuka ,  Shin'ichi Ijima ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    发明人： Shoichi Takasuka ,  Shin'ichi Ijima ,  Hideyuki Nakanishi ,  Akio Yoshikawa

    IPC分类号： G02B5/18 ,  G02B27/44

    CPC分类号： G11B7/1263 ,  G11B7/0903 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/1395

    摘要： An optoelectronic device that provides an excellent reproduction signal and a stable servo control while preventing deterioration of S/N ratio caused by stray light. The optoelectronic device has a semiconductor laser (101) that emits light beams on an information-recording medium (105), a hologram optical element (102) having a diffraction grating region (108) and located between the semiconductor laser (101) and the information-recording medium (105), and a photodetector (106) for receiving light that is diffracted at the diffraction grating region (108) of the hologram optical element (102), among returning light beams from the information-recording medium (105), and the optoelectronic device has also a diffraction grating region (107) in the vicinity of the diffraction grating region (108) of the hologram optical element (102) so as to prevent stray light other than diffracted light from the diffraction grating region (108) from entering the photodetector (106).

    摘要翻译： 提供优异的再现信号和稳定的伺服控制的光电子器件，同时防止由杂散光引起的S / N比的劣化。 该光电子器件具有在信息记录介质（105）上发射光束的半导体激光器（101），具有衍射光栅区域（108）并且位于半导体激光器（101）和 信息记录介质（105）和用于接收在全息图光学元件（102）的衍射光栅区域（108）处衍射的光的光电检测器（106），在从信息记录介质（105）返回的光束中， ，并且光电子器件在全息光学元件（102）的衍射光栅区域（108）附近还具有衍射光栅区域（107），以防止来自衍射光栅区域（108）的衍射光以外的杂散光 ）进入光电检测器（106）。