公开(公告)号：US6020991A

公开(公告)日：2000-02-01

申请号：US140708

申请日：1998-08-26

申请人： Mimura Yoshinori ,  Yukio Noda ,  Tetsuya Nakai ,  Toshio Tani ,  Tomomi Sudo ,  Shunichi Ohno

发明人： Mimura Yoshinori ,  Yukio Noda ,  Tetsuya Nakai ,  Toshio Tani ,  Tomomi Sudo ,  Shunichi Ohno

IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H04B10/29 ,  H04B10/294 ,  H01S3/091

CPC分类号： H04B10/291 ,  H01S3/094003 ,  H04B10/2912 ,  H01S3/1608 ,  H01S3/1613 ,  H01S3/1698

摘要： A 1.3 .mu.m-band optical amplifier includes an optical amplifying fiber doped with Yb ion for emitting light in 1.02 .mu.m band by pumping of the 0.98 .mu.m band light and Pr ion for amplifying signal light by pumping of the 1.02 .mu.m band light. Both ends of the optical amplifying fiber are connected to optical fiber gratings for selectively reflecting 1.02 .mu.m band light via matching connecting members and tapered core optical fibers. The optical fiber gratings form a 1.02 .mu.m-band resonator. A Wavelength Division Multiplexing (WDM) optical coupler multiplexes the signal light and pumping light from an pumping laser and supplies the thus-multiplexed light to the optical fiber grating. The pumping laser comprises a laser device which causes laser oscillation at 0.98 .mu.m. A 1.5 .mu.m-band optical amplifier having a similar configuration is also disclosed.

摘要翻译： 一个1.3微米的带宽光放大器包括一个掺有Yb离子的光放大光纤，用于通过泵浦0.98微米光带和Pr离子来发射1.02微米的光，并通过泵浦1.02微米的光带来放大信号光 。 光放大光纤的两端连接到光纤光栅，用于通过匹配的连接元件和锥形芯光纤选择性地反射1.02μm的带状光。 光纤光栅形成一个1.02微米的带隙谐振器。 波分复用（WDM）光耦合器复用来自激光激光器的信号光和泵浦光，并将如此复用的光提供给光纤光栅。 激光激光器包括使激光振荡在0.98μm的激光装置。 还公开了具有相似配置的1.5μm带宽光放大器。

公开(公告)号：US06393189B1

公开(公告)日：2002-05-21

申请号：US09507624

申请日：2000-02-17

申请人： Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai ,  Toshio Tani

发明人： Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai ,  Toshio Tani

IPC分类号： G02B602

CPC分类号： G02B6/0283 ,  G02B6/03638 ,  G02B6/4296

摘要： An optical beam diameter reducer for reducing a beam diameter of an optical beam comprises a three-layer structure composed of a central core, a refractive index inclined layer formed outside the core which refractive index gradually decreases toward the outside in the radial direction and a cladding layer formed outside the refractive index inclined layer.

摘要翻译： 用于减小光束的光束直径的光束直径减小器包括三层结构，其由中心芯，形成在芯外部的折射率向径向外侧逐渐减小的折射率倾斜层和包层 层形成在折射率倾斜层之外。

公开(公告)号：US5708752A

公开(公告)日：1998-01-13

申请号：US672538

申请日：1996-06-28

申请人： Yukio Noda ,  Yoshinori Mimura ,  Tetsuya Nakai ,  Toshio Tani

发明人： Yukio Noda ,  Yoshinori Mimura ,  Tetsuya Nakai ,  Toshio Tani

IPC分类号： C03C13/04 ,  G02B6/02 ,  G02B6/10 ,  G02B6/00

CPC分类号： G02B6/102 ,  C03C13/042 ,  G02B6/02

摘要： A high power laser transmitting fluoride glass fiber of an enhanced 2.94- .mu.m laser damage threshold value is disclosed, in which either of the core with a high refractive index and the cladding with a low refractive index is formed of fluoride glass which contains fluorine (F) as a component but has it substituted with 0 to 4.1 mol % of bromine (Br), chlorine (Cl), or bromine and chlorine. The optical fiber of the present invention may have its core formed of fluoride glass and its cladding formed of fluorine-contained resin, and the core glass has a composition that 70 to 80% of fluorine (F) is substituted with 0 to 4.1 mol % of bromine (Br), or chlorine (Cl), or bromine and chlorine.

摘要翻译： 公开了一种具有增强的2.94μm激光损伤阈值的高功率激光透射氟化物玻璃纤维，其中具有高折射率的芯中的任一种和具有低折射率的包层由含氟的氟化物玻璃形成（ F）作为组分，但是用0至4.1mol％的溴（Br），氯（Cl）或溴和氯代替。 本发明的光纤可以具有由氟化物玻璃形成的芯和由含氟树脂形成的包层，芯玻璃具有70〜80％的氟（F）被0〜4.1摩尔％ 的溴（Br）或氯（Cl），或溴和氯。

公开(公告)号：US5349600A

公开(公告)日：1994-09-20

申请号：US116323

申请日：1993-09-03

申请人： Osamu Shinbori ,  Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai

发明人： Osamu Shinbori ,  Yoshinori Mimura ,  Yukio Noda ,  Tetsuya Nakai

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/08 ,  H01S3/091

CPC分类号： H01S3/0941 ,  H01S3/0602 ,  H01S3/0612 ,  H01S3/0625 ,  H01S3/067 ,  H01S3/094084

摘要： A high-output, single fundamental transverse mode solid state laser is disclosed which uses a semiconductor laser array as an excitation light source. The solid state laser comprises: a laser element which includes a core containing an element added as a laser medium, a cladding containing no such laser medium element, and reflecting mirrors coated over the cladding surface for repeatedly reflecting incident excitation light so that it may repeatedly pass through the core; an excitation light source formed by semi-conductor laser or light emitting diode array; means for guiding the excitation light from the excitation light source to one side of the laser element for incidence thereto; and a resonator for the oscillation of the solid state laser.

摘要翻译： 公开了使用半导体激光器阵列作为激发光源的高输出单基本横模固态激光器。 固体激光器包括：激光元件，其包括含有作为激光介质添加的元件的芯，不包含这种激光介质元件的包层，以及涂覆在包覆表面上的反射镜，用于反复反射入射激发光，使得其可以重复 通过核心; 由半导体激光器或发光二极管阵列形成的激发光源; 用于将来自激发光源的激发光引导到激光元件的一侧入射到其上的装置; 以及用于固态激光器的振荡的谐振器。

公开(公告)号：USD510467S1

公开(公告)日：2005-10-04

申请号：US29161289

申请日：2002-05-28

申请人： Hidesato Kizaki ,  Hirotoshi Tawara ,  Yukio Noda

设计人： Hidesato Kizaki ,  Hirotoshi Tawara ,  Yukio Noda

公开(公告)号：US5724952A

公开(公告)日：1998-03-10

申请号：US660390

申请日：1996-06-07

申请人： Kotaro Miyashita ,  Hirofumi Mutoh ,  Katsushi Watanabe ,  Yukio Noda ,  Fumio Hara

发明人： Kotaro Miyashita ,  Hirofumi Mutoh ,  Katsushi Watanabe ,  Yukio Noda ,  Fumio Hara

IPC分类号： F02D41/14 ,  F01N3/20

CPC分类号： F02D41/1495 ,  F02D41/1441 ,  F02D41/1474 ,  F02B2275/18 ,  F02D2041/1409 ,  F02D41/1456

摘要： There is provided an air-fuel ratio control system for an internal combustion engine. The air-fuel ratio control system has an air-fuel ratio sensor arranged in an exhaust passage of the engine, which generates an output proportional to concentration of oxygen in exhaust gases emitted from the engine. The air-fuel ratio of a mixture supplied to the engine is controlled to a desired air-fuel ratio in response to the output from the air-fuel ratio sensor by the use of a proportional term and an integral term. A repetition period of inversion of the output from the air-fuel ratio sensor with respect to a predetermined reference value is calculated. Deterioration of the air-fuel ratio sensor is detected based the repetition period of inversion of the output from the air-fuel ratio sensor.

摘要翻译： 提供了一种用于内燃机的空燃比控制系统。 空燃比控制系统具有布置在发动机的排气通道中的空燃比传感器，其产生与从发动机排出的废气中的氧浓度成比例的输出。 通过使用比例项和积分项，供给发动机的混合物的空燃比响应于来自空燃比传感器的输出而被控制到期望的空燃比。 计算空燃比传感器的输出相对于预定基准值的反转重复周期。 基于来自空燃比传感器的输出的反转的重复周期来检测空燃比传感器的劣化。

公开(公告)号：US4731641A

公开(公告)日：1988-03-15

申请号：US892479

申请日：1986-08-05

申请人： Yuichi Matsushima ,  Kazuo Sakai ,  Yukitoshi Kushiro ,  Shigeyuki Akiba ,  Yukio Noda ,  Katsuyuki Utaka

发明人： Yuichi Matsushima ,  Kazuo Sakai ,  Yukitoshi Kushiro ,  Shigeyuki Akiba ,  Yukio Noda ,  Katsuyuki Utaka

IPC分类号： H01L31/107 ,  H01L31/18 ,  H01L29/201 ,  H01L27/14 ,  H01L31/08

CPC分类号： H01L31/1075 ,  H01L31/18

摘要： An avalanche photodiode with a quantum well layer in which a thin film, periodic multilayer structure composed of two different semiconductors is formed in a carrier multiplying region, the effective ionization coefficient ratio of carriers is raised by a quantum well layer formed by the thin film, multilayer periodic structure, and only electrons of large ionization coefficient are injected into the multiplying region, thereby to reduce noise in the APD.

摘要翻译： 具有量子阱层的雪崩光电二极管，其中在载流子倍增区域中形成由两个不同半导体构成的薄膜周期性多层结构，载流子的有效电离系数比由薄膜形成的量子阱层提高， 多层周期性结构，只有电离系数较大的电子注入乘法区域，从而降低APD中的噪声。

公开(公告)号：US08694226B2

公开(公告)日：2014-04-08

申请号：US13103944

申请日：2011-05-09

申请人： Ken Kurahashi ,  Yukio Noda ,  Koichi Saiki

发明人： Ken Kurahashi ,  Yukio Noda ,  Koichi Saiki

IPC分类号： F02D11/00 ,  F02D41/00

CPC分类号： F02D41/0085 ,  F02D41/1445 ,  F02D41/1454 ,  F02D41/1482 ,  F02D41/1497 ,  F02D41/18 ,  F02D41/22 ,  F02D41/222 ,  F02D41/2441 ,  F02D41/2474 ,  F02D2041/1432 ,  F02D2041/228 ,  F02D2200/101 ,  F02D2200/703 ,  Y02T10/40

摘要： A control apparatus for an internal-combustion engine includes a diagnosis device. The diagnosis device includes a determination section and an exhaust flow rate calculator configured to calculate an exhaust flow rate that reflects a volume flow amount of exhaust gas. A filter is configured to filter a signal representing an air-fuel ratio so that a 0.5th-order frequency component of engine speed is extracted from the signal. An integrator is configured to accumulate a filtered signal for a predetermined period of time to compute an integration value. A corrector is configured to correct the integration value to compute a corrected integration value each time the integration value is computed by the integrator. The determination section is configured to determine that cylinder-to-cylinder air-fuel ratio imbalance occurs in cylinders if the corrected integration value is greater than a predetermined threshold value after the predetermined period of time has elapsed.

摘要翻译： 内燃机的控制装置具有诊断装置。 诊断装置包括：判定部和排气流量计算器，被配置为计算反映废气的体积流量的排气流量。 滤波器被配置为对表示空燃比的信号进行滤波，从而从信号中提取出发动机转速的0.5次频率分量。 积分器被配置为在预定时间段内累积经滤波的信号以计算积分值。 校正器被配置为每当积分器计算积分值时校正积分值以计算校正积分值。 如果在经过了预定时间段之后校正积分值大于预定阈值，则确定部分被配置为确定气缸与气缸之间的空燃比不平衡发生。

公开(公告)号：US5869744A

公开(公告)日：1999-02-09

申请号：US953726

申请日：1997-10-17

申请人： Norio Suzuki ,  Daisuke Shimizu ,  Koichi Saiki ,  Yukio Noda

发明人： Norio Suzuki ,  Daisuke Shimizu ,  Koichi Saiki ,  Yukio Noda

IPC分类号： G01N27/407 ,  G01N27/41

CPC分类号： G01N27/407

摘要： An oxygen concentration-detecting device detects the concentration of oxygen present in exhaust gases emitted from an internal combustion engine. The device includes an oxygen sensor of a limit current type. A heater heats the oxygen sensor. A first voltage is applied to the oxygen sensor and the concentration of oxygen is detected based on a first output current from the oxygen sensor obtained when the first voltage is applied to the oxygen sensor. A second voltage is applied to the oxygen sensor at a first repetition period and the internal resistance of the oxygen sensor is detected based on a second output current from the oxygen sensor obtained when the second voltage is applied to the oxygen sensor. The oxygen sensor is heated by the heater based on the internal resistance of the oxygen sensor detected. Values of the concentration of oxygen are sampled based on the first output current from the oxygen sensor at a second repetition period shorter than the first repetition period and the sampled values of the concentration of oxygen are stored. The concentration of oxygen is estimated based on the sampled values of the concentration of oxygen stored. In another form of the invention, a predetermined repetition period (first repetition period) at which the second voltage is applied is set in dependence on operating conditions of the engine.

摘要翻译： 氧浓度检测装置检测从内燃机排出的废气中存在的氧浓度。 该装置包括极限电流型氧传感器。 加热器加热氧气传感器。 第一电压被施加到氧传感器，并且基于当将第一电压施加到氧传感器时获得的氧传感器的第一输出电流来检测氧的浓度。 在第一重复周期将氧传感器施加第二电压，并且基于当将第二电压施加到氧传感器时获得的氧传感器的第二输出电流来检测氧传感器的内阻。 氧传感器由加热器基于检测到的氧传感器的内阻加热。 基于来自氧传感器的第一输出电流以比第一重复周期短的第二重复周期对氧气的浓度进行取样，并且存储氧气浓度的采样值。 氧气的浓度基于存储的氧浓度的采样值来估计。 在本发明的另一形式中，根据发动机的运行条件来设定施加第二电压的预定重复周期（第一重复周期）。

公开(公告)号：US4796274A

公开(公告)日：1989-01-03

申请号：US13665

申请日：1987-02-12

申请人： Shigeyuki Akiba ,  Masashi Usami ,  Yukio Noda ,  Masatoshi Suzuki

发明人： Shigeyuki Akiba ,  Masashi Usami ,  Yukio Noda ,  Masatoshi Suzuki

IPC分类号： H01S5/00 ,  H01S5/12 ,  H01S5/125 ,  H01S3/19

CPC分类号： H01S5/1228 ,  H01S5/12 ,  H01S5/125

摘要： A semiconductor device with a distributed Bragg reflector is disclosed, in which periodic corrugations are formed between two semiconductor layers along the direction of travel of light. In accordance with the present invention, the periodic corrugations are formed by grid-like layers of a refractory material. The refractory material is an insulator, a refractory metal or a laminate member of an insulator and a refractory metal.

摘要翻译： 公开了一种具有分布式布拉格反射器的半导体器件，其中沿着光的行进方向在两个半导体层之间形成周期性波纹。 根据本发明，周期性波纹由耐火材料的格子状的层形成。 耐火材料是绝缘体，难熔金属或绝缘体和难熔金属的层叠构件。