公开(公告)号：US5489798A

公开(公告)日：1996-02-06

申请号：US267439

申请日：1994-06-29

申请人： Kentaro Doguchi ,  Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada

发明人： Kentaro Doguchi ,  Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada

IPC分类号： H01L27/144 ,  H01L31/0224 ,  H01L29/06 ,  H01L29/78

CPC分类号： H01L27/1443 ,  H01L31/022416

摘要： In an opto-electronic integrated circuit of the present invention, in a first surface region of a semiconductor substrate, a pin-type photodiode is constituted on the basis of a photodiode layer formed on a first transistor layer. In a second surface region of the semiconductor substrate, a heterojunction bipolar transistor is constituted on the basis of only a second transistor layer separated form the first transistor layer. Since a plurality of heterojunction bipolar transistors are normally integrated for one pin-type photodiode, the thickness of the heterojunction bipolar transistors larger in number than the pin-type photodiode is set regardless of the thickness of the pin-type photodiode. The thickness of a high-resistance layer in the pin-type photodiode is set with an increased degree of freedom. When the first surface region of the semiconductor substrate is the inner region of a recessed step portion, and the second surface region of the semiconductor substrate is the outer region of the recessed step portion, a difference in thickness between the heterojunction bipolar transistor and the pin-type photodiode is absorbed by the depth of the recessed step portion. For this reason, the pin-type photodiode and the heterojunction bipolar transistor are formed to have almost the same surface level.

摘要翻译： 在本发明的光电集成电路中，在半导体衬底的第一表面区域中，基于形成在第一晶体管层上的光电二极管层构成针型光电二极管。 在半导体衬底的第二表面区域中，基于仅从第一晶体管层分离的第二晶体管层构成异质结双极晶体管。 由于多个异质结双极晶体管通常集成在一个pin型光电二极管中，所以与pin型光电二极管的厚度无关地设定比pin型光电二极管数量大的异质结双极型晶体管的厚度。 针型光电二极管中的高电阻层的厚度设定为增加的自由度。 当半导体衬底的第一表面区域是凹入阶梯部分的内部区域，并且半导体衬底的第二表面区域是凹陷步骤部分的外部区域时，异质结双极晶体管和引脚之间的厚度差 型光电二极管被凹陷台阶部分的深度吸收。 为此，pin型光电二极管和异质结双极晶体管形成为具有几乎相同的表面水平。

公开(公告)号：US5546489A

公开(公告)日：1996-08-13

申请号：US520007

申请日：1995-08-28

申请人： Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada ,  Kentaro Doguchi

发明人： Goro Sasaki ,  Hiroshi Yano ,  Sosaku Sawada ,  Kentaro Doguchi

IPC分类号： G02B6/42 ,  H01L31/0203 ,  H01L31/173 ,  G02B6/36

CPC分类号： H01L31/173 ,  G02B6/4204 ,  G02B6/4246 ,  H01L31/0203 ,  H01L2224/48247 ,  H01L2924/1305

摘要： In an optical link apparatus of the present invention, a hybrid IC which is a main amplifier of a receiver circuit, and a hybrid IC which is a transmitter circuit are mounted on an island of a lead frame. An OEIC in which electronic devices and a light receiving device which constitute a preamplifier of the receiver circuit are integrated is housed in a light receiving device unit. A light emitting device is housed in a light emitting device unit. Sleeves which are optical link components are installed at the light receiving device unit and the light emitting device unit, and one ends of the sleeves are protruded from a plastic molding to the outside. As wires are connected to lead pins, the hybrid ICs are electrically connected with the light receiving device unit and the light emitting device unit. The lead pins, the hybrid ICs, the light receiving device unit, the light emitting device unit, and the sleeves are integrally sealed by a plastic molding which is superior in productivity and processability. Therefore, the optical link apparatus which is small and superior in productivity can be achieved.

摘要翻译： 在本发明的光链路装置中，作为接收电路的主放大器的混合IC和作为发送电路的混合IC安装在引线框的岛上。 构成接收器电路的前置放大器的电子设备和光接收装置的OEIC被容纳在光接收装置单元中。 发光器件容纳在发光器件单元中。 作为光连接部件的套筒安装在光接收装置单元和发光装置单元处，并且套筒的一端从塑料模制件突出到外部。 当导线连接到引脚时，混合IC与光接收器件单元和发光器件单元电连接。 引线针，混合IC，光接收装置单元，发光装置单元和套筒通过生产率和加工性优异的塑料模制件一体地密封。 因此，能够实现小型化且生产率优异的光连接装置。

公开(公告)号：US5712504A

公开(公告)日：1998-01-27

申请号：US597448

申请日：1996-02-02

申请人： Hiroshi Yano ,  Kentaro Doguchi ,  Sosaku Sawada ,  Takeshi Sekiguchi

发明人： Hiroshi Yano ,  Kentaro Doguchi ,  Sosaku Sawada ,  Takeshi Sekiguchi

IPC分类号： H01L27/144 ,  H01L31/105 ,  H01L31/00

CPC分类号： H01L27/1443 ,  H01L31/105 ,  H01L2224/05554 ,  H01L2224/48137 ,  H01L2924/01004 ,  H01L2924/01025 ,  H01L2924/01046 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/1305 ,  H01L2924/14 ,  H01L2924/19041

摘要： A pin type light-receiving device according to the present invention comprises (a) a semiconductor substrate, (b) a first semiconductor layer formed on a semiconductor substrate and doped with an impurity of a first conduction type, (c) a second semiconductor layer formed in a mesa shape on the first semiconductor layer and made of a first semiconductor material without intentionally doping the first semiconductor material with an impurity, (d) a third semiconductor layer formed in a mesa shape on the second semiconductor layer and made of the first semiconductor material doped with an impurity of a second conduction type different from the first conduction type, (e) a first electrode layer formed in ohmic contact on the first semiconductor layer, (f) a second electrode layer formed in ohmic contact on the third semiconductor layer, and (g) a fourth semiconductor layer formed around the first to the third semiconductor layers and made of a second semiconductor material having a band gap energy greater than the first semiconductor material without intentionally doping the second semiconductor material with an impurity. This arrangement can suppress the dark current, based on a reduction of leak current, thereby improving the device characteristics.

摘要翻译： 根据本发明的针式光接收装置包括（a）半导体衬底，（b）形成在半导体衬底上并掺杂有第一导电类型的杂质的第一半导体层，（c）第二半导体层 在第一半导体层上以台面形状形成并由第一半导体材料制成，而不用杂质有意地掺杂第一半导体材料，（d）在第二半导体层上形成为台面形状的第三半导体层，并由第一半导体材料制成 掺杂有不同于第一导电类型的第二导电类型的杂质的半导体材料，（e）在第一半导体层上以欧姆接触形成的第一电极层，（f）在第三半导体上以欧姆接触形成的第二电极层 层，以及（g）形成在第一至第三半导体层周围的第四半导体层，并由具有带Ga p能量大于第一半导体材料，而不用杂质有意地掺杂第二半导体材料。 这种布置可以基于泄漏电流的减少来抑制暗电流，从而提高器件特性。

公开(公告)号：US5475256A

公开(公告)日：1995-12-12

申请号：US235947

申请日：1994-05-02

申请人： Sosaku Sawada ,  Goro Sasaki ,  Hiroshi Yano

发明人： Sosaku Sawada ,  Goro Sasaki ,  Hiroshi Yano

IPC分类号： H01L27/14 ,  H01L27/144 ,  H01L31/10 ,  H03F3/08 ,  H01L27/01

CPC分类号： H01L27/1443 ,  H03F3/08

摘要： An opto-electronic integrated circuit is arranged to comprise a photodetector and a tunnel emitter bipolar transistor for first-stage amplification of a current generated in the photodetector, as formed on a substrate. The tunnel emitter bipolar transistor can be operated at high speed and has a high amplification factor, so that noise due to the base current can be reduced upon amplification of the current generated in the photodetector by light detection.

摘要翻译： 光电集成电路被布置为包括光电检测器和隧道射极双极晶体管，用于在基板上形成的在光电检测器中产生的电流的第一级放大。 隧道发射极双极晶体管可以高速运行并且具有高的放大系数，从而可以通过光检测放大在光电检测器中产生的电流，从而降低基极电流引起的噪声。

公开(公告)号：US08816772B2

公开(公告)日：2014-08-26

申请号：US13180752

申请日：2011-07-12

申请人： Yoshiyuki Sugimoto ,  Sosaku Sawada ,  Taizo Tatsumi

发明人： Yoshiyuki Sugimoto ,  Sosaku Sawada ,  Taizo Tatsumi

IPC分类号： H03F3/45

CPC分类号： H03F3/45098 ,  H03F3/08 ,  H03F3/087 ,  H03F3/45103 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45302 ,  H03F2203/45702 ,  H03G3/3084

摘要： A differential circuit with a function of a variable gain without shifting the output cross point is disclosed. The differential circuit includes an amplifying stage and a control stage. The amplifying stage includes three units each having a pair of transistors, a pair of load resistors, and a pair of current sources. The second and third units each put between the first unit and the load resistor to bypass the current. The control stage includes two units and two current sources to compensate the current bypassed by the second or third unit to keep the DC output level substantially in constant.

摘要翻译： 公开了具有可变增益的功能而不移动输出交叉点的差分电路。 差分电路包括放大级和控制级。 放大级包括三个单元，每个具有一对晶体管，一对负载电阻和一对电流源。 第二和第三单元分别放在第一单元和负载电阻之间绕过电流。 控制级包括两个单元和两个电流源，以补偿由第​​二或第三单元旁路的电流，以保持DC输出电平基本上恒定。

公开(公告)号：US08704592B2

公开(公告)日：2014-04-22

申请号：US13428374

申请日：2012-03-23

申请人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

发明人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

IPC分类号： H03F3/60

CPC分类号： H03F3/45089 ,  H03F3/45475 ,  H03F3/605 ,  H03F2203/45138 ,  H03F2203/45392 ,  H03F2203/45612

摘要： A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA.

摘要翻译： 公开了主要用于驱动半导体光学器件的行波放大器（TWA）。 实施例的TWA提供第一类型的多个差分放大器和第二类型的附加差分放大器，它们连接在TWA的输入和输出之间。 第一类型的差分放大器提供从输入到输出的第一延迟，而第二类型的差分放大器提供比TWA的输入和输出之间的第一延迟更长的第二延迟。

公开(公告)号：US5596665A

公开(公告)日：1997-01-21

申请号：US551270

申请日：1995-10-31

申请人： Hiromi Kurashima ,  Hisato Takahashi ,  Ken-ichi Kitayama ,  Ryoji Sakamoto ,  Sosaku Sawada ,  Takeshi Sekiguchi ,  Ichiro Tonai ,  Nobuo Shiga

发明人： Hiromi Kurashima ,  Hisato Takahashi ,  Ken-ichi Kitayama ,  Ryoji Sakamoto ,  Sosaku Sawada ,  Takeshi Sekiguchi ,  Ichiro Tonai ,  Nobuo Shiga

IPC分类号： G02B6/42

CPC分类号： G02B6/4292 ,  G02B6/4246 ,  G02B6/4274 ,  G02B6/4281 ,  G02B6/4283 ,  G02B6/4245 ,  G02B6/4263 ,  G02B6/4269

摘要： It is an object of the present invention to provide an optical module having a structure in which alignment precision of sleeves to be accommodated to a housing can be improved with a simple operation. The optical module according to the present invention is characterized by providing special structures for defining the positions of the sleeves to a sleeve holder for holding the sleeves, and the housing having a cavity for accommodating the sleeves. In particular, the housing includes support portions each having a reference surface for defining the fixing position of the corresponding sleeve. The sleeve holder includes spring pieces each for urging the sleeve to the reference surface.

摘要翻译： 本发明的目的是提供一种光学模块，其具有能够通过简单的操作来提高容纳在壳体中的套筒的对准精度的结构。 根据本发明的光学模块的特征在于提供用于将套筒定位到用于保持套筒的套筒保持器的位置的特殊结构，并且壳体具有用于容纳套筒的空腔。 特别地，壳体包括各自具有用于限定相应套筒的固定位置的参考表面的支撑部分。 套筒保持器包括用于将套筒推压到参考表面的弹簧片。

公开(公告)号：US5426480A

公开(公告)日：1995-06-20

申请号：US241576

申请日：1994-05-12

申请人： Ryosaku Sawada ,  Kensaku Sawada ,  Kosaku Sawada ,  Sosaku Sawada ,  Mikio Matsui

发明人： Ryosaku Sawada ,  Kensaku Sawada ,  Kosaku Sawada ,  Sosaku Sawada ,  Mikio Matsui

IPC分类号： G03D3/13 ,  G03D3/08 ,  G03D13/02

CPC分类号： G03D3/132

摘要： A photographic film processing apparatus comprises a water tank for containing a constant quantity of fresh water, and one or a plurality of processing units each comprising a pair of feed rollers disposed with their circumferences in close contact with each other, a pair of delivery rollers spaced apart from the pair of feed rollers and disposed with their circumferences in close contact with each other, a pair of sealing rollers disposed with the circumference of one of them in close contact with the circumferences of the top feed roller and the top delivery roller and with the circumference of the other in close contact with the circumferences of the bottom feed roller and the bottom delivery roller, and a pair of support plates disposed respectively on the opposite sides of the rollers so as to support the rollers for rotation and to define a liquid-tight processing chamber by the circumferences of the rollers and the inner surfaces thereof. The processing unit or units are immersed completely in fresh water contained in the water tank, and a processing liquid is circulated through each processing chamber, at a high velocity across the direction of travel of a film in the processing chamber.

摘要翻译： 照相胶片处理装置包括一个用于容纳恒定量的淡水的水箱，以及一个或多个处理单元，每个处理单元包括彼此紧密接触地布置的一对进给辊，一对输送辊间隔开 除了一对进给辊之外，它们的周长彼此紧密接触，一对密封辊设置成其一个的周边与顶部进料辊和顶部输送辊的周边紧密接触，并且与 另一个的圆周与底部进料辊和底部输送辊的周边紧密接触，以及分别设置在辊的相对侧上的一对支撑板，以便支撑辊以旋转并限定液体 该处理室由辊的周向及其内表面组成。 处理单元完全浸没在水箱中的淡水中，并且处理液体以高速跨过处理室中的膜的行进方向循环通过每个处理室。

公开(公告)号：US20120018622A1

公开(公告)日：2012-01-26

申请号：US13180752

申请日：2011-07-12

申请人： Yoshiyuki SUGIMOTO ,  Sosaku Sawada ,  Taizo Tatsumi

发明人： Yoshiyuki SUGIMOTO ,  Sosaku Sawada ,  Taizo Tatsumi

IPC分类号： H03F3/08 ,  H03F3/45

CPC分类号： H03F3/45098 ,  H03F3/08 ,  H03F3/087 ,  H03F3/45103 ,  H03F3/45475 ,  H03F2203/45138 ,  H03F2203/45302 ,  H03F2203/45702 ,  H03G3/3084

摘要： A differential circuit with a function of a variable gain without shifting the output cross point is disclosed. The differential circuit includes an amplifying stage and a control stage. The amplifying stage includes three units each having a pair of transistors, a pair of load resistors, and a pair of current sources. The second and third units each put between the first unit and the load resistor to bypass the current. The control stage includes two units and two current sources to compensate the current bypassed by the second or third unit to keep the DC output level substantially in constant.

摘要翻译： 公开了具有可变增益的功能而不移动输出交叉点的差分电路。 差分电路包括放大级和控制级。 放大级包括三个单元，每个具有一对晶体管，一对负载电阻和一对电流源。 第二和第三单元分别放在第一单元和负载电阻之间绕过电流。 控制级包括两个单元和两个电流源，以补偿由第​​二或第三单元旁路的电流，以保持DC输出电平基本上恒定。

公开(公告)号：US07585120B2

公开(公告)日：2009-09-08

申请号：US11362792

申请日：2006-02-28

申请人： Makoto Ito ,  Sosaku Sawada

发明人： Makoto Ito ,  Sosaku Sawada

IPC分类号： G02B6/36 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/4227 ,  G02B6/4204

摘要： An optical device includes: a first optical component that has an end face oblique with respect to a plane perpendicular to an optical axis; a second optical component that is optically coupled to the first optical component; and a lens that is placed between the first optical component and the second optical component, and is positioned so that the trajectory of a focal point formed when the first optical component and the second optical component rotate relative to each other falls within a valid region on the surface of the second optical component.

摘要翻译： 光学装置包括：第一光学部件，其具有相对于垂直于光轴的平面倾斜的端面; 光学耦合到第一光学部件的第二光学部件; 以及放置在第一光学部件和第二光学部件之间的透镜，并且被定位成使得当第一光学部件和第二光学部件相对于彼此旋转时形成的焦点的轨迹落在有效区域内 第二光学部件的表面。