公开(公告)号：US5481524A

公开(公告)日：1996-01-02

申请号：US11311

申请日：1993-01-29

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

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

IPC分类号： G02B5/18 ,  G11B7/09 ,  G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0903

摘要： A diffraction element includes a diffraction grating for dividing a light beam, emitted from a light source along a predetermined path, into a principal light beam and at least two auxiliary light beams, and a hologram for separating the beam, which has been reflected from an optical information recording medium, from the predetermined path. The diffraction grating and the hologram are integrated together by being formed in alignment with each other in opposite portions of a block of glass or plastics. A slide is provided at at least a portion of the diffraction element and includes a peripheral wall in sliding engagement with a cylindrical surface coaxial with an optical axis of the diffraction element to permit the diffraction element to be rotatable about the optical axis.

摘要翻译： 衍射元件包括用于将从光源沿着预定路径发射的光束分成主光束和至少两个辅助光束的衍射光栅和用于分离已经从 光学信息记录介质。 衍射光栅和全息图通过在玻璃或塑料块的相对部分彼此对准地形成在一起。 在衍射元件的至少一部分处设置有滑动件，并且包括与与衍射元件的光轴同轴的圆柱形表面滑动接合的周壁，以允许衍射元件围绕光轴旋转。

公开(公告)号：US5748658A

公开(公告)日：1998-05-05

申请号：US789199

申请日：1997-01-24

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： G11B7/12 ,  G11B7/125 ,  G11B7/135 ,  G11B7/22 ,  H01S5/022 ,  H01S5/183 ,  H01S3/18

CPC分类号： H01S5/02244 ,  G11B7/123 ,  G11B7/126 ,  G11B7/1353 ,  G11B7/22 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01S5/02216 ,  H01S5/02292 ,  H01S5/02296 ,  H01S5/02469 ,  H01S5/0264 ,  H01S5/183

摘要： A semiconductor laser device comprising a first lead having a chip mounting part provided at the front end, at least one second lead separated from the first lead, a semiconductor laser element mounted on the chip mounting part, connecting means for electrically connecting the electrode of the semiconductor laser element and at least one second lead, and a frame body made of insulating material disposed so as to surround the semiconductor laser device and connecting means, and fixed to the first lead and second lead. In this semiconductor laser device, transparent resin is not used for sealing, and hence deterioration of light exit characteristic does not occur. Besides, because of the structure of fixing the leads to the frame body, it is rigid and excellent in reliability, and a multiplicity can be manufactured at once, so that it is easy to manufacture and is excellent in mass producibility.

摘要翻译： 一种半导体激光装置，包括：第一引线，其具有设置在前端的芯片安装部，与第一引线分离的至少一个第二引线，安装在芯片安装部上的半导体激光元件，用于将 半导体激光元件和至少一个第二引线，以及由围绕半导体激光器件和连接装置设置并被固定到第一引线和第二引线的绝缘材料制成的框体。 在该半导体激光装置中，透明树脂不用于密封，因此不会发生光射出特性的劣化。 此外，由于将引线固定在框架体上的结构，其刚性和可靠性优异，并且可以一次性制造多个，从而易于制造并且具有优异的批量生产能力。

公开(公告)号：US5729519A

公开(公告)日：1998-03-17

申请号：US645488

申请日：1996-05-13

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： G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  H01S5/022 ,  H01S5/18 ,  G11B7/00 ,  G02B5/32

CPC分类号： G11B7/127 ,  G11B7/094 ,  G11B7/123 ,  G11B7/0903 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S2301/176 ,  H01S5/02248 ,  H01S5/02252 ,  H01S5/02292

摘要： An optical head for optical recording and reproducing apparatuses is disclosed, which comprises a semiconductor laser, a mirror for reflecting a light beam emitted from the semiconductor laser, a diffraction grating for dividing the light beam into zero order, plus and sinus first-order beams, a holographic diffraction grating being arranged at an optical path of the beams divided by the diffraction grating, an objective lens for focusing the beams on a disk and causing the beams reflected from the disk to be incident on the holographic diffraction grating to diffract the beams, and a photodetector for detecting a tracking error signal by receiving the beams diffracted by the holographic diffraction grating. The semiconductor laser has a beam incident area which the beam reflected from the disk is incident. The beam incident area acts to deflect the incident beam. As a result, the optical head is able to obtain the stable tracking error signal.

摘要翻译： 公开了一种用于光学记录和再现装置的光学头，其包括半导体激光器，用于反射从半导体激光器发射的光束的反射镜，用于将光束分成零级的衍射光栅，正弦和正弦一阶光束 ，全息衍射光栅布置在由衍射光栅分割的光束的光路上，用于将光束聚焦在盘上并使从光盘反射的光束入射到全息衍射光栅上以衍射光束的物镜 以及用于通过接收由全息衍射光栅衍射的光束来检测跟踪误差信号的光电检测器。 半导体激光器具有从盘反射的光束入射的光束入射区域。 光束入射区域用于偏转入射光束。 结果，光头能够获得稳定的跟踪误差信号。

公开(公告)号：US5539767A

公开(公告)日：1996-07-23

申请号：US253915

申请日：1994-06-03

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： H01L31/12 ,  G02B6/42 ,  H01S3/00 ,  H01S5/00 ,  H01S5/022 ,  H01L23/06 ,  H01S3/19

CPC分类号： H01S5/02296 ,  G02B6/4204 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02292 ,  H01S5/0683

摘要： The present invention relates to a semiconductor laser device on which a high-frequency signal can be superposed without radiating said high-frequency signal externally. Said device consists of a semiconductor laser element mounted directly or indirectly through a semiconductor substrate on a comb-frame, and an outer frame made of an insulation material provided at an area surrounding said comb-frame on which said semiconductor laser chip is mounted; and this device is fixed on a printed circuit board with a through-hole allowing a direct pass of laser light emitted from said semiconductor laser device. Said printed circuit board is provided with a high-frequency circuit and is lined with a metal film layer on the rear surface of said printed circuit board or within said printed circuit board.

摘要翻译： 本发明涉及一种半导体激光器件，其上可以叠加高频信号而不在外部辐射所述高频信号。 所述装置由直接或间接安装在梳形框架上的半导体衬底的半导体激光器元件和由设置在其上安装所述半导体激光器芯片的所述梳框周围的区域的绝缘材料制成的外框架构成; 并且该装置固定在具有允许从所述半导体激光装置发射的激光的直接通过的通孔的印刷电路板上。 所述印刷电路板设置有高频电路，并且在所述印刷电路板的后表面上或所述印刷电路板内衬有金属膜层。

公开(公告)号：US5517479A

公开(公告)日：1996-05-14

申请号：US217722

申请日：1994-03-25

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： G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  H01S5/022 ,  H01S5/18 ,  G11B7/00 ,  G02B5/32

CPC分类号： G11B7/127 ,  G11B7/094 ,  G11B7/123 ,  G11B7/0903 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01S2301/176 ,  H01S5/02248 ,  H01S5/02252 ,  H01S5/02292

摘要： An optical head for optical recording and reproducing apparatuses is disclosed. The optical head comprises a semiconductor laser, a mirror for reflecting a light beam emitted from the semiconductor laser, a diffraction grating for dividing the light beam into zero order, plus and minus first-order beams. It also comprises a holographic diffraction grating being arranged at an optical path of the beams divided by the diffraction grating, an objective lens for focusing the beams on a disk and causing the beams reflected from the disk to be incident on the holographic diffraction grating to diffract the beams, and a photodetector for detecting a tracking error signal by receiving the beams diffracted by the holographic diffraction grating. The semiconductor laser has a beam incident area onto which the beam reflected from the disk is incident. The beam incident area acts to scatter or absorb the incident beam. As a result, the optical head is able to obtain a stable tracking error signal.

摘要翻译： 公开了一种用于光学记录和再现装置的光学头。 光头包括半导体激光器，用于反射从半导体激光器发射的光束的反射镜，用于将光束分成零级的加和减一级光束的衍射光栅。 它还包括一个全息衍射光栅，被布置在由衍射光栅分开的光束的光路上，一个物镜用于将光束聚焦在光盘上，并使从光盘反射的光束入射到全息衍射光栅上衍射 光束，以及用于通过接收由全息衍射光栅衍射的光束来检测跟踪误差信号的光电检测器。 半导体激光器具有从光盘反射的光束入射到其上的光束入射区域。 光束入射区域用于散射或吸收入射光束。 结果，光头能够获得稳定的跟踪误差信号。

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。

公开(公告)号：US06735024B2

公开(公告)日：2004-05-11

申请号：US10263166

申请日：2002-10-02

申请人： Hideyuki Nakanishi ,  Shoichi Takasuka ,  Shinichi Ijima ,  Akio Yoshikawa ,  Kazutoshi Onozawa ,  Kazuhiko Yamanaka ,  Naoki Nakanishi

发明人： Hideyuki Nakanishi ,  Shoichi Takasuka ,  Shinichi Ijima ,  Akio Yoshikawa ,  Kazutoshi Onozawa ,  Kazuhiko Yamanaka ,  Naoki Nakanishi

IPC分类号： G02B702

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/123 ,  G11B7/22 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2924/00014

摘要： A movable enclosure contains optical components, such as an objective lens, a semiconductor laser, a mirror, and a photodetector. The movable enclosure is supported by a fixed member via a plurality of wires that are positioned in parallel. This construction allows the movable enclosure to move in a tracking direction and a focusing direction. The plurality of wires are insulated from one another to be also used as power-supplying lines and signal lines for the semiconductor laser and the photodetector.

摘要翻译： 可移动的外壳包含诸如物镜，半导体激光器，反射镜和光电检测器的光学部件。 可移动外壳经由多个平行定位的导线由固定构件支撑。 这种结构允许可动外壳沿跟踪方向和聚焦方向移动。 多根导线彼此绝缘，也用作半导体激光器和光电检测器的供电线和信号线。

公开(公告)号：US06728035B2

公开(公告)日：2004-04-27

申请号：US10251471

申请日：2002-09-20

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

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

IPC分类号： G02B518

CPC分类号： G11B7/1353 ,  G02B5/1866 ,  G11B7/0903 ,  G11B7/123 ,  G11B7/1356 ,  G11B11/10543 ,  G11B11/10576

摘要： An optical device includes a light-emitting element for irradiating light onto an information recording medium, a diffraction grating for splitting light emitted from said light-emitting element into a plurality of beams, a focussing member for focussing the plurality of beams onto the information recording medium, a deflection member for deflecting the plurality of beams after they have been reflected from the information recording medium; and a photodetector for receiving the plurality of beams after they have been deflected by the deflection member. The diffraction grating has a first grating region and a second grating region, which have different diffraction efficiencies. The zero-order diffraction light in the first grating region is used as the main beam for reproducing the information signal, and the +1-order or −1-order diffraction light in the second grating regions is used as sub-beams for reproduction of the tracking error signal. Thus, the light amount of both the main beam and the sub-beams can be increased without increasing the light emission of the semiconductor laser element 1, and the S/N ratio of the main beam and the sub-beams can be enhanced.

摘要翻译： 光学装置包括用于将光照射到信息记录介质上的发光元件，用于将从所述发光元件发射的光分解为多个光束的衍射光栅，用于将多个光束聚焦到信息记录上的聚焦部件 介质，用于在已经从信息记录介质反射之后偏转多个光束的偏转构件; 以及用于在被偏转构件偏转之后接收多个光束的光电检测器。 衍射光栅具有第一光栅区域和第二光栅区域，其具有不同的衍射效率。 将第一光栅区域中的零级衍射光用作再现信息信号的主光束，并且将第二光栅区域中的+ 1级或-1级衍射光用作用于再现 跟踪误差信号。 因此，在不增加半导体激光元件1的发光的同时，可以增加主光束和子光束的光量，并且可以提高主光束和子光束的S / N比。

公开(公告)号：US06534794B1

公开(公告)日：2003-03-18

申请号：US09633234

申请日：2000-08-04

申请人： Hideyuki Nakanishi ,  Yoshiaki Komma ,  Yasuyuki Kochi ,  Akio Yoshikawa

发明人： Hideyuki Nakanishi ,  Yoshiaki Komma ,  Yasuyuki Kochi ,  Akio Yoshikawa

IPC分类号： H01L2715

CPC分类号： H01L33/64 ,  H01S5/02212 ,  H01S5/02292 ,  H01S5/02453 ,  H01S5/0425

摘要： A semiconductor light-emitting unit includes: a semiconductor laser diode; a photodetector functioning as a sub-mount for mounting the diode thereon; and a heating member, incorporated with the photodetector, for heating the diode. If the ambient temperature of the diode falls within a range where kinks are possibly caused in the low-temperature I-L characteristic of the diode, then current is supplied to the heating member, thereby heating the diode. The heating member may be either a doped region defined within a semiconductor substrate or a doped polysilicon film formed on the substrate. Also, the heating member is preferably located under the laser diode with a heat-dissipating layer and an insulating layer interposed therebetween. The semiconductor light-emitting unit with this structure can effectively eliminate kinks from the low-temperature I-L characteristic of the semiconductor laser diode.

摘要翻译： 半导体发光单元包括：半导体激光二极管; 用作将二极管安装在其上的子安装座的光电检测器; 以及加热构件，其结合有光电检测器，用于加热二极管。 如果二极管的环境温度落在二极管的低温I-L特性中可能引起扭结的范围内，则向加热部件供电，从而加热二极管。 加热构件可以是限定在半导体衬底内的掺杂区域或形成在衬底上的掺杂多晶硅膜。 此外，加热部件优选位于激光二极管的下方，散热层和介于其间的绝缘层。 具有这种结构的半导体发光单元可以有效地消除半导体激光二极管的低温I-L特性的扭结。

公开(公告)号：US06501601B1

公开(公告)日：2002-12-31

申请号：US09557711

申请日：2000-04-25

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

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

IPC分类号： G02B518

CPC分类号： G11B7/1353 ,  G02B5/1866 ,  G11B7/0903 ,  G11B7/123 ,  G11B7/1356 ,  G11B11/10543 ,  G11B11/10576

摘要： An optical device includes a light-emitting element for irradiating light onto an information recording medium, a diffraction grating for splitting light emitted from said light-emitting element into a plurality of beams, a focussing member for focussing the plurality of beams onto the information recording medium, a deflection member for deflecting the plurality of beams after they have been reflected from the information recording medium; and a photodetector for receiving the plurality of beams after they have been deflected by the deflection member. The diffraction grating has a first grating region and a second grating region, which have different diffraction efficiencies. The zero-order diffraction light in the first grating region is used as the main beam for reproducing the information signal, and the +1-order or −1-order diffraction light in the second grating regions is used as sub-beams for reproduction of the tracking error signal. Thus, the light amount of both the main beam and the sub-beams can be increased without increasing the light emission of the semiconductor laser element 1, and the S/N ratio of the main beam and the sub-beams can be enhanced.

摘要翻译： 光学装置包括用于将光照射到信息记录介质上的发光元件，用于将从所述发光元件发射的光分解成多个光束的衍射光栅，用于将多个光束聚焦到信息记录上的聚焦部件 介质，用于在已经从信息记录介质反射之后偏转多个光束的偏转构件; 以及用于在被偏转构件偏转之后接收多个光束的光电检测器。 衍射光栅具有第一光栅区域和第二光栅区域，其具有不同的衍射效率。 将第一光栅区域中的零级衍射光用作再现信息信号的主光束，并且将第二光栅区域中的+ 1级或-1级衍射光用作用于再现 跟踪误差信号。 因此，在不增加半导体激光元件1的发光的同时，可以增加主光束和子光束的光量，并且可以提高主光束和子光束的S / N比。