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1. 发明授权

US5109444A Integrated type optical node and optical information system using the same 失效
标题翻译：集成式光学节点和光信息系统
公开(公告)号：US5109444A
公开(公告)日：1992-04-28
申请号：US718927
申请日：1991-06-25
申请人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
发明人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
IPC分类号： G02B6/122 , G02B6/12 , G02F1/025 , H01S5/00 , H01S5/026 , H01S5/10 , H01S5/50 , H04B10/213
CPC分类号： H01S5/50 , G02B6/12004 , H01S5/0264 , H01S5/10
摘要： This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.

2. 发明授权

US5287422A Integrated type optical node and optical information system using the same 失效
标题翻译：集成型光节点和光信息系统采用相同的方式
公开(公告)号：US5287422A
公开(公告)日：1994-02-15
申请号：US35249
申请日：1993-03-22
申请人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
发明人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
IPC分类号： G02B6/12 , H01S5/026 , H01S5/10 , H01S5/50 , H04B10/213 , G02B6/10
CPC分类号： H01S5/50 , G02B6/12004 , H01S5/0264 , H01S5/10
摘要： This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
摘要翻译：本说明书公开了一种集成型光节点，包括基板，形成在基板上的用于连接光信息系统的传输线的通道光波导，设置在光波导上的用于放大通过波导传播的光的放大部分，以及设置在光波导上用于将光发射器和/或光接收器耦合到传输线的光分支部分。本说明书还公开了使用这种光节点的光信息系统。

3. 发明授权

US5222163A Integrated type optical node and optical information system using the same 失效
标题翻译：集成型光节点和光信息系统采用相同的方式
公开(公告)号：US5222163A
公开(公告)日：1993-06-22
申请号：US814444
申请日：1991-12-30
申请人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
发明人： Uuichi Handa , Hidetoshi Nojiri , Hajime Sakata
IPC分类号： G02B6/12 , H01S5/026 , H01S5/10 , H01S5/50 , H04B10/213
CPC分类号： H01S5/50 , G02B6/12004 , H01S5/0264 , H01S5/10
摘要： This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
摘要翻译：本说明书公开了一种集成型光节点，包括基板，形成在基板上的用于连接光信息系统的传输线的通道光波导，设置在光波导上的用于放大通过波导传播的光的放大部分，以及设置在光波导上用于将光发射器和/或光接收器耦合到传输线的光分支部分。本说明书还公开了使用这种光节点的光信息系统。

4. 发明授权

US5220573A Optical apparatus using wavelength selective photocoupler 失效
标题翻译：使用波长选择光电耦合器的光学设备
公开(公告)号：US5220573A
公开(公告)日：1993-06-15
申请号：US795966
申请日：1991-11-21
申请人： Hajime Sakata , Hidetoshi Nojiri
发明人： Hajime Sakata , Hidetoshi Nojiri
IPC分类号： H01S5/00 , H01S5/026 , H01S5/125 , H01S5/16 , H01S5/22
CPC分类号： H01S5/026 , G02B6/124 , G02B6/125 , H01S5/0064 , H01S5/125 , H01S5/164 , H01S5/22
摘要： The present invention relates to optical apparatus such as a photosensor, a semiconductor laser, an optical amplifier in which a wavelength selective photocoupler is used so as to couple two waveguides through a diffraction grating. A photosensor which is one of the optical apparatus according to the present invention comprises a substrate, a first waveguide layer formed on the substrate, a second waveguide layer formed on the first waveguide layer to be stacked in a direction of thickness and which has a guided mode difference from that of the first waveguide layer, a diffraction grating formed on an overlapping region of the guided modes of the first and second waveguide layers and which couples light components of a specific wavelength range of light propagating through the first waveguide layer to the second waveguide layer, a light absorption layer for absorbing at least some light components of the light components coupled to the second waveguide layer, and an electrode for converting the light components absorbed by the light absorption layer into an electrical signal and outputting the electrical signal.
摘要翻译：本发明涉及光传感器，半导体激光器，光放大器等光学装置，其中使用波长选择性光电耦合器，以便通过衍射光栅耦合两个波导。作为本发明的光学装置之一的光电传感器包括基板，形成在基板上的第一波导层，形成在第一波导层上的第二波导层，以沿厚度方向堆叠并且具有引导与第一波导层的模式差异，形成在第一和第二波导层的引导模式的重叠区域上并且将通过第一波导层传播的特定波长范围的光分量耦合到第二波导层的第二波导层，用于吸收耦合到第二波导层的光分量的至少一些光分量的光吸收层，以及用于将由光吸收层吸收的光分量转换成电信号并输出电信号的电极。

5. 发明授权

US5140149A Optical apparatus using wavelength selective photocoupler 失效
标题翻译：使用波长选择光电耦合器的光学设备
公开(公告)号：US5140149A
公开(公告)日：1992-08-18
申请号：US796929
申请日：1991-11-22
申请人： Hajime Sakata , Hidetoshi Nojiri
发明人： Hajime Sakata , Hidetoshi Nojiri
IPC分类号： G02B6/124 , G02B6/34 , G02B6/42 , H01L27/15 , H01S3/00 , H01S5/026 , H01S5/042 , H01S5/10 , H01S5/50
CPC分类号： H01S5/5045 , G02B6/124 , G02B6/42 , H01L27/15 , H01S3/0064 , H01S5/1032 , G02B6/29323 , H01S5/0264 , H01S5/0425 , H01S5/1035
摘要： The present invention relates to optical apparatus such as a photosensor, a semiconductor laser, an optical amplifier in which a wavelength selective photocoupler is used so as to couple two waveguides through a diffraction grating.A photosensor which is one of the optical apparatus according to the present invention comprises a substrate, a first waveguide layer formed on the substrate, a second waveguide layer formed on the first waveguide layer to be stacked in a direction of thickness and which has a guided mode difference from that of the first waveguide layer, a diffraction grating formed on an overlapping region of the guided modes of the first and second waveguide layers and which couples light components of a specific wavelength range of light propagating through the first waveguide layer to the second waveguide layer, a light absorption layer for absorbing at least some light components of the light components coupled to the second waveguide layer, and an electrode for converting the light components absorbed by the light absorption layer into an electrical signal and outputting the electrical signal.
摘要翻译：本发明涉及光传感器，半导体激光器，光放大器等光学装置，其中使用波长选择性光电耦合器，以便通过衍射光栅耦合两个波导。作为本发明的光学装置之一的光电传感器包括基板，形成在基板上的第一波导层，形成在第一波导层上的第二波导层，以沿厚度方向堆叠并且具有引导与第一波导层的模式差异，形成在第一和第二波导层的引导模式的重叠区域上并且将通过第一波导层传播的特定波长范围的光分量耦合到第二波导层的第二波导层，用于吸收耦合到第二波导层的光分量的至少一些光分量的光吸收层，以及用于将由光吸收层吸收的光分量转换成电信号并输出电信号的电极。

6. 发明申请

US20110116332A1 MEMORY DEVICE WITH TEST MECHANISM 有权
标题翻译：具有测试机制的存储器件
公开(公告)号：US20110116332A1
公开(公告)日：2011-05-19
申请号：US12618827
申请日：2009-11-16
申请人： TOMOMI NAKA , Hajime Sakata
发明人： TOMOMI NAKA , Hajime Sakata
IPC分类号： G11C29/00
CPC分类号： G11C29/50 , G11C29/12005 , G11C2029/5006
摘要： A semiconductor memory device includes a plurality of memory cell transistors arranged in a matrix and each configured to store data, and a test circuit configured to output to outside the semiconductor memory device an output signal indicative of an amount of test current flowing through a selected one of the plurality of memory cell transistors, wherein the test circuit includes a plurality of reference cell transistors employed to successively produce varying amounts of currents, a comparison circuit configured to successively compare the amount of test current with each of the varying amounts of currents, and a code generating circuit configured to generate a code indicative of a result of the successive comparisons performed by the comparison circuit, wherein the code is output as the output signal.
摘要翻译：半导体存储器件包括以矩阵形式布置并分别被配置为存储数据的多个存储单元晶体管，以及测试电路，被配置为向半导体存储器件外部输出指示流过所选择的测试电流量的输出信号所述多个存储单元晶体管中的所述测试电路包括用于连续产生不同数量电流的多个参考单元晶体管;比较电路，被配置为连续地将所述测试电流的量与所述不同量的电流中的每一个进行比较;以及代码生成电路，被配置为生成表示由所述比较电路执行的连续比较的结果的代码，其中所述代码被输出作为所述输出信号。

7. 发明申请

US20080002745A1 Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatus 失效
标题翻译：分布式布拉格反射半导体激光器的控制方法和图像投影装置
公开(公告)号：US20080002745A1
公开(公告)日：2008-01-03
申请号：US11896142
申请日：2007-08-30
申请人： Kazunari Fujii , Hajime Sakata , Yukio Furukawa
发明人： Kazunari Fujii , Hajime Sakata , Yukio Furukawa
IPC分类号： H01S5/06
CPC分类号： H04N9/3129 , H01S5/005 , H01S5/0092 , H01S5/06256 , H01S5/06804
摘要： A distributed Bragg reflection (DBR) semiconductor laser is controlled in an image projecting apparatus. The image projecting apparatus includes the DBR semiconductor laser which is provided with a phase region and a DBR region, a light wavelength converting device for converting fundamental-wave light emitted from the DBR semiconductor laser into second harmonic wave light, an optical deflector for scanning the second harmonic wave in a one-dimensional or two-dimensional manner, and a modulating portion for modulating the DBR semiconductor laser based on an image signal. In the control method, a coefficient calculating step and a wavelength adjusting step are performed within a non-drawing time during which a drawing signal, which corresponds to the image signal, is absent. In the coefficient calculating step, at least one coefficient in a relationship between a DBR current to be injected into the DBR region and a phase current to be injected into the phase region for continuously shifting the wavelength of the fundamental-wave light is calculated. In the wavelength adjusting step, the DBR current injected into the DBR region and the phase current injected into the phase region are changed based on the relationship such that the second harmonic wave light is adjusted.
摘要翻译：在图像投影装置中控制分布式布拉格反射（DBR）半导体激光器。图像投影装置包括具有相位区域和DBR区域的DBR半导体激光器，用于将从DBR半导体激光器发射的基波光转换为二次谐波光的光波长转换装置，用于扫描一维或二维二次谐波，以及用于基于图像信号调制DBR半导体激光器的调制部分。在控制方法中，系数计算步骤和波长调整步骤在不存在对应于图像信号的绘制信号的非绘制时间内执行。在系数计算步骤中，计算要注入到DBR区域的DBR电流和要注入到用于连续移位基波的波长的相位区域的相电流之间的关系中的至少一个系数。在波长调整步骤中，根据调整二次谐波光的关系，改变注入DBR区域的DBR电流和注入相位区域的相电流。

8. 发明授权

US5155736A Semiconductor laser element capable of changing emission wavelength, and method of driving the same 失效
标题翻译：能够改变发射波长的半导体激光元件及其驱动方法
公开(公告)号：US5155736A
公开(公告)日：1992-10-13
申请号：US790832
申请日：1991-11-14
申请人： Takeo Ono , Hajime Sakata
发明人： Takeo Ono , Hajime Sakata
IPC分类号： H01S5/0625 , H01S5/34 , H01S5/50
CPC分类号： B82Y20/00 , H01S5/06255 , H01S5/34 , H01S5/06256 , H01S5/06258 , H01S5/5045
摘要： A semiconductor laser element capable of changing an oscillation wavelength over a wide range without increasing a threshold current is disclosed. A wavelength selective filter capable of changing a selected wavelength over a wide range is also disclosed. The semiconductor laser element has a substrate and a laser resonator formed on the substrate by stacking semiconductor layers including an active layer and an optical waveguide layer of a superlattice structure. The resonator includes a first reflection portion, an active portion, a phase adjustment portion and second reflection portion which are juxtaposed in a resonance direction. Diffraction gratings are formed in the optical guide layer of the first and second reflection portions. Electrodes are independently formed in the active portion, the phase adjustment portion and the first and second reflection portions. Further, a method for driving the semiconductor laser is disclosed.
摘要翻译：公开了能够在不增加阈值电流的情况下在宽范围内改变振荡波长的半导体激光元件。还公开了能够在宽范围内改变选定波长的波长选择滤波器。半导体激光元件具有通过层叠包括有源层和超晶格结构的光波导层的半导体层而形成在基板上的基板和激光谐振器。谐振器包括在谐振方向上并列的第一反射部分，有源部分，相位调整部分和第二反射部分。衍射光栅形成在第一和第二反射部分的光导层中。电极独立地形成在有源部分，相位调整部分和第一和第二反射部分中。此外，公开了一种用于驱动半导体激光器的方法。

9. 发明授权

US5002369A Nonlinear optical element having electrodes on two side surfaces of nonlinear medium through insulating layers 失效
标题翻译：在非线性介质通过绝缘层的两个侧表面上具有电极的非线性光学元件
公开(公告)号：US5002369A
公开(公告)日：1991-03-26
申请号：US292537
申请日：1988-12-30
申请人： Hajime Sakata
发明人： Hajime Sakata
IPC分类号： G02F3/02
CPC分类号： G02F3/024
摘要： A nonlinear optical element comprises a nonlinear medium having photoconductivity and an electrooptical effect, a pair of electrodes, arranged on two side surfaces of said nonlinear medium, for applying an electric field to the medium, for serving as reflection mirrors forming an optical resonator, and a pair of insulating layers formed between the nonlinear medium and the electrodes. A predetermined DC voltage is supplied to the electrodes, and the nonlinear medium is irradiated with a light having a variable intensity. Thus, the reflectance and transmittance of the optical element is non-linearly varied in accordance with the intensity of the incident light. Also disclosed is a method for activating such a nonlinear optical element.

10. 发明授权

US4856869A Display element and observation apparatus having the same 失效
标题翻译：显示元件和观察装置
公开(公告)号：US4856869A
公开(公告)日：1989-08-15
申请号：US35017
申请日：1987-04-06
申请人： Hajime Sakata , Yasuyuki Watanabe , Masato Yamanobe , Yukitoshi Ohkubo , Akihiro Nagano
发明人： Hajime Sakata , Yasuyuki Watanabe , Masato Yamanobe , Yukitoshi Ohkubo , Akihiro Nagano
IPC分类号： G02B5/18 , G02F1/29 , G09F9/35
CPC分类号： G09F9/35 , G02B5/1842 , G02F1/292
摘要： A display element includes a substrate and a display pattern formed on the substrate, the display pattern including a diffraction grating. The width in the direction perpendicular to the grating lines of the diffraction grating of the display pattern is selected so as to prevent re-diffraction of the light diffracted by the one diffraction grating. An observation apparatus includes the afore-said display element, but the display pattern has a first diffraction grating structure and a second diffraction grating structure. An illuminating system and an observation system are added so as to allow for observation of the display pattern. The direction of the grating lines of the first diffraction grating structure differs from that of the grating lines of the second diffraction grating structure, thereby preventing the occurrence of a rainbow-like image.
摘要翻译：显示元件包括基板和形成在基板上的显示图案，显示图案包括衍射光栅。选择与显示图案的衍射光栅的光栅线垂直的方向的宽度，以防止由一个衍射光栅衍射的光的再衍射。观察装置包括上述显示元件，但显示图案具有第一衍射光栅结构和第二衍射光栅结构。添加照明系统和观察系统，以便观察显示图案。第一衍射光栅结构的光栅线的方向与第二衍射光栅结构的光栅线的方向不同，从而防止出现彩虹状的图像。

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