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    • 1. 发明授权
    • Semiconductor laser module
    • 半导体激光模块
    • US06335944B1
    • 2002-01-01
    • US09671445
    • 2000-09-27
    • Akira MuginoTakeo Shimizu
    • Akira MuginoTakeo Shimizu
    • H01S310
    • H01S5/146
    • A semiconductor laser module of an external-cavity type in which a GaAs/AlGaAs-based semiconductor laser having ripples in the gain-wavelength characteristic thereof and an optical transmission medium including a Bragg grating are optically coupled by an optical coupling member. A gain peak wavelength (&lgr;(Ith)) for the case where the modularized semiconductor laser is driven with a threshold current (Ith) is set on the shorter-wavelength side of the reflection center wavelength (&lgr;BG) of the Bragg grating, a gain peak wavelength (&lgr;(Iop)) of the semiconductor laser for a maximum operating current (Iop) is set on the longer-wavelength side of the gain peak wavelength (&lgr;(Ith)), a pulling wavelength width (&lgr;PULL) and a de-tuning width (&lgr;detun) of the semiconductor laser module are set so that the de-tuning width (&lgr;detun) is smaller than the pulling wavelength width (&lgr;PULL), the resulting difference (=&lgr;PULL−&lgr;detun) is greater than the full width at half maximum of the reflection spectrum of the Bragg grating, and the gain peak wavelength (&lgr;(Ith)) is on the longer-wavelength side of a limit value (&lgr;LIMIT).
    • 其中具有其增益波长特性中具有波纹的GaAs / AlGaAs基半导体激光器和包括布拉格光栅的光传输介质的外腔型的半导体激光器模块通过光耦合部件光耦合。 在模块化半导体激光器以阈值电流(Ith)驱动的情况下,增益峰值波长(lambd(Ith))设置在布拉格光栅的反射中心波长(lambdBG)的较短波长侧,增益 最大工作电流(Iop)的半导体激光器的峰值波长(lambd(Iop))设置在增益峰值波长(lambd(Ith))的较长波长侧,拉伸波长宽度(lambdPULL)和de 半导体激光器模块的调谐宽度(lambddetun)被设置为使得去调谐宽度(兰普丁顿)小于拉伸波长宽度(lambdPULL),所得到的差异(= lambdPULL-lambddetun)大于 布拉格光栅的反射光谱的最大值和增益峰值波长(lambd(Ith))在极限值(lambdLIMIT)的较长波长侧。
    • 2. 发明授权
    • Semiconductor laser module
    • 半导体激光模块
    • US06343088B1
    • 2002-01-29
    • US09381120
    • 1999-09-15
    • Akira MuginoSatoshi KoyanagiTakeo Shimizu
    • Akira MuginoSatoshi KoyanagiTakeo Shimizu
    • H01S500
    • H01S5/028H01S5/0281H01S5/0287H01S5/141H01S5/146
    • A semiconductor laser module 1 comprising a semiconductor laser device 2 having an emitting surface 2a from which excited light is emitted and a reflecting surface 2b opposite to the emitting surface, and an optical feedback medium 3 for feeding most of optical power emitted from the emitting surface 2a of the semiconductor laser device 2 back to the semiconductor laser device 2 by coupling means 4 and emitting part of the optical power. The semiconductor laser device 2 has a low reflectance multilayer coating 2c formed on the emitting surface 2a and having a reflectance of 10−4 to 10%. The low reflectance multilayer coating 2c has a reflection spectrum in the form of a curve having a maximum value at the central wavelength of reflection and minimum values on both sides of the central wavelength of reflection.
    • 一种半导体激光器模块1,包括具有发射激发光的发射表面2a和与发射表面相对的反射表面2b的半导体激光器件2和用于馈送从发射表面发射的大部分光功率的光反馈介质3 半导体激光装置2的2a通过耦合装置4返回到半导体激光装置2并发射光功率的一部分。 半导体激光装置2具有形成在发光面2a上的反射率为10 -4〜10%的低反射率多层膜2c。 低反射率多层涂层2c具有在反射的中心波长处具有最大值的曲线形式的反射光谱,并且在中心反射波长的两侧具有最小值。
    • 3. 发明授权
    • Optical wavelength division multiplexer device
    • 光波分复用器
    • US5764825A
    • 1998-06-09
    • US643294
    • 1996-05-08
    • Akira MuginoShuichi TamuraTakeo Shimizu
    • Akira MuginoShuichi TamuraTakeo Shimizu
    • G02B6/12G02B6/28H04J14/00
    • G02B6/12007
    • The present invention proposes an optical wavelength division multiplexer device which has low through loss and low reflection loss, and also has high isolation. A filter member is made up from a filter base board upon which is formed a wavelength division filter 5, and is disposed so as to intersect an input and output optical waveguide 3 of rectilinear form part-way along it at an intersection angle .alpha.. When light which includes light of two different wavelengths .lambda..sub.1 and .lambda..sub.2 is incident through an incident light side of the input and output optical waveguide 3, the light of wavelength .lambda..sub.2 passes through the wavelength division filter 5 and is emitted through an emitted light side, while the light of wavelength .lambda..sub.1 is reflected by the wavelength division filter 5 in a direction separated from the input and output optical waveguide 3. A reflected light reception waveguide 1 is formed as rectilinear and is arranged in this reflection direction so as to receive the reflected light, with a gap being left between this reflected light reception waveguide 1 and the input and output optical waveguide 3, and the reflected light of wavelength .lambda..sub.1 is received into a reflected light reception end thereof and is emitted from a received light after end portion thereof. By providing this gap between the input and output optical waveguide 3 and the reflected light reception waveguide 1, increase of loss due to mutual action between the incident light and the reflected light is restrained.
    • 本发明提出了具有低通损耗和低反射损耗的光波分复用器装置,并且还具有高隔离度。 滤波器构件由滤波器基板构成,在滤波器基板上形成波长分离滤波器5,并且以与交叉角α成一直线的直线形式的输入和输出光波导3相交。 当包括两个不同波长λ1和λ2的光的光通过入射和输出光波导3的入射光侧入射时,波长λ2的光通过波长分割滤光器5并通过发射光发射 而波长λ1的光在与输入和输出光波导3分离的方向上被波分复用滤光器5反射。反射光接收波导1形成为直线形并沿该反射方向布置,以便 接收反射光,在反射光接收波导1和输入和输出光波导3之间留有间隙,波长λ1的反射光被接收到其反射光接收端并从接收光发射 后端部分。 通过在输入和输出光波导3和反射光接收波导1之间提供这种间隙,可以抑制由入射光和反射光之间的相互作用引起的损耗的增加。
    • 4. 发明授权
    • Opposing swash plate piston pump/motor
    • 相反的斜盘活塞泵/马达
    • US08235681B2
    • 2012-08-07
    • US12531464
    • 2008-03-14
    • Takeo Shimizu
    • Takeo Shimizu
    • F04B1/12F04B27/08F04B1/26
    • F04B1/324F04B1/20F04B1/22F16H39/14
    • A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston (8) and a second piston (9) are inserted opposite to each other in each cylinder (6) such that the first piston (8) slides on the first swash plate (30) and the second piston (9) slides on the second swash plate (40). By providing a servo mechanism (33) that tilts the first swash plate (30) and a tilt linking mechanism (40, 70) that tilts the second swash plate (40) in conjunction with the tilting of the first swash plate (30), tilt angles of the two swash plates (30, 40) can be controlled by the single servo mechanism (33).
    • 第一斜盘(30)和第二斜盘(40)设置在气缸体(4)的两侧,并且多个气缸(6)设置在气缸体(4)中。 第一活塞(8)和第二活塞(9)在每个气缸(6)中彼此相对插入,使得第一活塞(8)在第一斜盘(30)上滑动,第二活塞(9)滑动 在第二斜盘(40)上。 通过提供使第一斜盘(30)倾斜的伺服机构(33)和倾斜第二斜盘(40)与倾斜第一斜盘(30)倾斜的倾斜连接机构(40,70) 可以通过单个伺服机构(33)来控制两个斜盘(30,40)的倾斜角度。
    • 5. 发明申请
    • OPPOSING SWASH PLATE PISTON PUMP/MOTOR
    • 对策滑板活塞泵/电机
    • US20100083822A1
    • 2010-04-08
    • US12531464
    • 2008-03-14
    • Takeo Shimizu
    • Takeo Shimizu
    • F01B3/02F04B1/29F04B1/32
    • F04B1/324F04B1/20F04B1/22F16H39/14
    • A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston (8) and a second piston (9) are inserted opposite to each other in each cylinder (6) such that the first piston (8) slides on the first swash plate (30) and the second piston (9) slides on the second swash plate (40). By providing a servo mechanism (33) that tilts the first swash plate (30) and a tilt linking mechanism (40, 70) that tilts the second swash plate (40) in conjunction with the tilting of the first swash plate (30), tilt angles of the two swash plates (30, 40) can be controlled by the single servo mechanism (33).
    • 第一斜盘(30)和第二斜盘(40)设置在气缸体(4)的两侧,并且多个气缸(6)设置在气缸体(4)中。 第一活塞(8)和第二活塞(9)在每个气缸(6)中彼此相对插入,使得第一活塞(8)在第一斜盘(30)上滑动,第二活塞(9)滑动 在第二斜盘(40)上。 通过提供使第一斜盘(30)倾斜的伺服机构(33)和倾斜第二斜盘(40)与倾斜第一斜盘(30)倾斜的倾斜连接机构(40,70) 可以通过单个伺服机构(33)来控制两个斜盘(30,40)的倾斜角度。
    • 7. 发明授权
    • Swash plate type hydraulic pump or motor
    • 斜盘式液压泵或电机
    • US07021904B2
    • 2006-04-04
    • US10950685
    • 2004-09-28
    • Takeo Shimizu
    • Takeo Shimizu
    • F01B13/04F04B19/00
    • F04B1/2042F01B3/0035F04B1/2078F04B1/22F04B1/324
    • A swash plate type hydraulic pump or motor comprises first and second swash plates which move reciprocally while opposing first and second pistons, so as to expand and contract a volume chamber according to rotation of a cylinder block. Drive pistons push on the swash plates from behind, causing the first and second swash plates to tilt, respectively. A tilt angle control valve controls the tilt angles of the swash plates by selectively increasing drive pressures that are guided to the drive pistons. A port plate is provided in a sliding portion between the first swash plate and the first piston. The port plate rotates integrally with the cylinder block and guides high and low pressure side hydraulic fluid, which flows through the supply and discharge ports provided in a sliding surface of the first swash plate, to the volume chamber via an inner portion of each first piston.
    • 旋转斜盘式液压泵或马达包括第一和第二斜盘,其在相反的第一和第二活塞的同时往复运动,以便根据气缸体的旋转而膨胀和收缩容积室。 驱动活塞从后面推动斜盘,使第一和第二斜盘分别倾斜。 倾斜角度控制阀通过选择性地增加被引导到驱动活塞的驱动压力来控制斜盘的倾斜角度。 端口板设置在第一斜盘和第一活塞之间的滑动部分中。 所述端口板与所述气缸体一体地旋转,并且将经由所述第一斜盘的滑动面的供给排出口流过的高压侧液压流体和低压侧液压流体经由所述第一活塞的内部 。
    • 8. 发明申请
    • Swash plate type hydraulic pump or motor
    • 斜盘式液压泵或电机
    • US20050095144A1
    • 2005-05-05
    • US10950686
    • 2004-09-28
    • Takeo Shimizu
    • Takeo Shimizu
    • F01B3/00F03C1/06F03C1/24F03C1/26F04B1/20F04B1/22F04B3/00
    • F04B1/205F01B3/0035F04B1/22
    • A swash plate type hydraulic pump or motor has a first swash plate (30) and a second swash plate (40) which cause a first piston (8) and a second piston (9), respectively, to move reciprocally, opposing each other, so as to expand and contract a volume chamber (10) according to rotation of a cylinder block (4). A rod shape valve body (60) is disposed pushed into a through hole (12) of a shaft axis of the cylinder block (4) so as to be free to rotate relative to the cylinder block (4). A pair of supply and discharge ports (61) that open and supply high pressure and low pressure, respectively, are formed in an outer circumferential surface of the valve body (60). A cylinder port (11) is formed connecting the volume chamber (10) and an inner circumferential surface of the through hole of the cylinder block. The cylinder port (11) is arranged in a position opposite to the supply and discharge port (61).
    • 旋转斜盘式液压泵或电动机具有分别使第一活塞(8)和第二活塞(9)互相往复移动的第一斜盘(30)和第二斜盘(40) 以便根据气缸体(4)的旋转来膨胀和收缩容积室(10)。 杆形阀体(60)被推入气缸体(4)的轴心的通孔(12)中,以相对于气缸体(4)自由旋转。 在阀体(60)的外周面分别形成有一对供给高压低压的供给排出口(61)。 形成连接容积室(10)和气缸体的通孔的内圆周表面的气缸端口(11)。 气缸端口(11)布置在与供排口(61)相对的位置。