公开(公告)号：US06586725B2

公开(公告)日：2003-07-01

申请号：US09900953

申请日：2001-07-10

申请人： Natsuhiko Mizutani ,  Takahiro Numai

发明人： Natsuhiko Mizutani ,  Takahiro Numai

IPC分类号： G01B910

CPC分类号： G01C19/661

摘要： An optical gyro is provided with a ring laser and detection unit for detecting the beat frequency of said ring laser, and comprises a first ring laser of which beat frequency decreases when the angular velocity increases in a certain direction from a standstill state and a second ring laser of which beat frequency increases when the angular velocity increases regardless of the rotating direction. The first and second ring lasers are so positioned as to be mutually independent optically.

公开(公告)号：US06785003B2

公开(公告)日：2004-08-31

申请号：US09900951

申请日：2001-07-10

申请人： Natsuhiko Mizutani ,  Takahiro Numai

发明人： Natsuhiko Mizutani ,  Takahiro Numai

IPC分类号： G01C1968

CPC分类号： G01C19/66 ,  H01S3/083

摘要： A semiconductor ring laser gyro comprising two or more ring lasers, the ring lasers being optically independent of each other, is characterized in that a change in beat frequency with respect to a change in angular velocity of a first ring laser is opposite to that of a second ring laser, and angular velocity of rotation of the gyro is detected by a signal representing a difference between a first beat frequency generated by the first ring laser and a second beat frequency generated by the second ring laser.

摘要翻译： 一种包括两个或更多个环形激光器的半导体环形激光陀螺仪，环形激光器彼此光学独立，其特征在于，相对于第一环形激光器的角速度的变化，拍频的变化与 通过表示由第一环形激光器产生的第一拍频与由第二环形激光器产生的第二拍频之间的差的信号来检测陀螺仪的旋转角度旋转速度。

公开(公告)号：US06448552B1

公开(公告)日：2002-09-10

申请号：US09524260

申请日：2000-03-14

申请人： Natsuhiko Mizutani ,  Takahiro Numai

发明人： Natsuhiko Mizutani ,  Takahiro Numai

IPC分类号： G01D534

CPC分类号： G01C19/66

摘要： A gyro comprises a ring resonator type laser, a vibration table for applying an oscillation to the laser, and a signal processor for processing an output signal from the laser. The signal processor determines the phase angle of the output signal from the amplitude of an oscillation cycle component of the vibration table and that of a higher harmonic component thereof.

摘要翻译： 陀螺仪包括环形谐振器型激光器，用于向激光器施加振荡的振动台，以及用于处理来自激光器的输出信号的信号处理器。 信号处理器根据振动台的振荡周期分量的振幅和其高次谐波分量的振幅来确定输出信号的相位角。

公开(公告)号：US06334014B1

公开(公告)日：2001-12-25

申请号：US09427661

申请日：1999-10-27

申请人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

发明人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

IPC分类号： G02B626

CPC分类号： G02B6/29358 ,  G02B6/02038 ,  G02B6/02061 ,  G02B6/2938

摘要： An optical fiber apparatus includes an optical fiber, and a demultiplexing/multiplexing unit for demultiplexing or multiplexing at least a light wave of at least a wavelength with a sufficiently narrow wavelength spectrum that is determined by a resolving power thereof, such as a Fabry-Perot etalon. The demultiplexing/multiplexing unit is provided or formed directly on at least an end face of the optical fiber. An optical detector array including a plurality of optical detectors for detecting demultiplexed light waves may be provided on a light emergence surface of of the demultiplexing/multiplexing unit.

摘要翻译： 一种光纤装置，包括光纤，以及解复用/多路复用单元，用于至少解复用或多路复用至少具有由其分辨能力确定的足够窄的波长谱的波长的光，例如Fabry-Perot 标准具。 解复用/多路复用单元直接设置在光纤的至少端面上。 包括用于检测解复用光波的多个光检测器的光检测器阵列可以设置在解复用/复用单元的出光表面上。

公开(公告)号：US5153758A

公开(公告)日：1992-10-06

申请号：US692850

申请日：1991-04-29

申请人： Yoshiharu Tashiro ,  Kenichi Kasahara ,  Takahiro Numai

发明人： Yoshiharu Tashiro ,  Kenichi Kasahara ,  Takahiro Numai

IPC分类号： H01L33/00 ,  H01S5/00 ,  H01S5/042 ,  H01S5/06 ,  H01S5/062 ,  H01S5/22 ,  H01S5/40

CPC分类号： H01S5/0608 ,  H01L33/0016 ,  H01S5/06203 ,  H01S5/0028 ,  H01S5/042 ,  H01S5/22 ,  H01S5/40

摘要： A driving method for a pnpn semiconductor device includes the steps of applying a voltage higher than a holding voltage of the pnpn semiconductor device to an anode electrode thereof, supplying a control signal light to the pnpn semiconductor device to set the pnpn semiconductor device into an ON state, and supplying an information signal light to the pnpn semiconductor device to emit an output light. The control signal light and the information signal light are time-sequentially supplied to the pnpn semiconductor device under the voltage applied thereto. An apparatus for carrying out the driving method includes a light information transmission input line that is branched into a plurality of lines, where a light detection circuit is coupled to at least one of the lines. A synchronous driving circuit applies voltage to the pnpn semiconductor device which is coupled to one of the other lines of the information transmission input line. The pnpn semiconductor device is driven by receiving light from the input line when the light detection circuit detects an address of the pnpn semiconductor device included in a light supplied from the light information transmission input line.

公开(公告)号：US06631002B1

公开(公告)日：2003-10-07

申请号：US09705803

申请日：2000-11-06

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1964

CPC分类号： G01C19/66

摘要： A ring laser gyro wherein a first and a second laser beam propagate with propagating directions different with each other comprises electrode areas on an optical waveguide configuring the ring laser and controls an current injected or a voltage applied to the electrode areas, wherein the oscillating frequencies of the first and second laser beams are different from each other, thereby causing an increase and a decrease in the beat frequency enabling to detect the direction and the speed of a rotation at the same time. With regards to a method for detecting a rotation, the anode of the laser gyro is connected to an operational amplifier. Since the signal outputted from the operational amplifier has a frequency corresponding to the angular speed, it is converted into the voltage by a frequency-voltage conversion circuit so as to detect a rotation. This same method can be used for other types of gyros such as a semiconductor laser gyro, a gas lager gyro and the like.

摘要翻译： 环形激光陀螺仪，其中第一和第二激光束以彼此不同的传播方向传播包括构成环形激光器的光波导上的电极区域，并控制施加到电极区域的电流或电压，其中振荡频率 第一和第二激光束彼此不同，从而导致拍频的增加和减少，从而能够同时检测旋转的方向和速度。 关于用于检测旋转的方法，激光陀螺仪的阳极连接到运算放大器。 由于从运算放大器输出的信号具有对应于角速度的频率，所以通过频率 - 电压转换电路将其转换成电压以检测旋转。 这种相同的方法可以用于其它类型的陀螺仪，例如半导体激光陀螺仪，气瓶陀螺仪等。

公开(公告)号：US06501776B1

公开(公告)日：2002-12-31

申请号：US09492337

申请日：2000-01-27

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： H01S500

CPC分类号： H01S5/12 ,  H01S5/068 ,  H01S5/1053 ,  H01S5/3211 ,  H01S5/3214 ,  H01S5/327

摘要： A semiconductor laser includes a substrate, semiconductor layers formed on the substrate, which construct a cavity including a waveguide with an active region and include at least one semiconductor layer whose refractive-index temperature coefficient is set at a non-positive or minute value sufficient to achieve at least one of the functions of stabilizing an oscillation wavelength of the semiconductor laser and suppressing an overflow of carriers from the active region, and a driving unit for causing electron-hole recombination in the active region.

摘要翻译： 半导体激光器包括衬底，形成在衬底上的半导体层，其构造包括具有有源区的波导的空腔，并且包括至少一个半导体层，其折射率温度系数被设定为非正值或微小值， 实现稳定半导体激光器的振荡波长并抑制载流子从有源区域溢出的功能中的至少一个以及用于在有源区域中引起电子 - 空穴复合的驱动单元。

公开(公告)号：US06351311B1

公开(公告)日：2002-02-26

申请号：US09499679

申请日：2000-02-08

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1968

CPC分类号： G01C19/66

摘要： A gyro includes a laser device for generating a first and second laser beams to be propagated circuitally in opposition directions. An electric signal is taken out from the laser device. A third laser beam having an oscillation frequency different from that of the first laser beam is led to enter the laser device so as to be propagated circuitally in the same direction as the first laser beam.

摘要翻译： 陀螺仪包括用于产生在对置方向上电路传播的第一和第二激光束的激光装置。 从激光装置中取出电信号。 导致具有与第一激光束的振荡频率不同的振荡频率的第三激光束进入激光装置，以便沿与第一激光束相同的方向电路传播。

公开(公告)号：US06297883B1

公开(公告)日：2001-10-02

申请号：US09419778

申请日：1999-10-18

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1966

CPC分类号： H01S5/1071 ,  G01C19/66

摘要： An optical gyro reduces the coupling loss generated when laser beams are incident upon a photodetector and the noise generated by the reflected beams from an external point of reflection to the laser. The gyro includes a ring resonator type gas laser with laser beams propagating circuitally in opposite directions relative to each other and a beat signal detector for detecting a change in electric current, voltage or impedance.

摘要翻译： 光学陀螺仪减少当激光束入射到光电检测器上时产生的耦合损耗和由反射光束从外部反射点产生的噪声到激光器。 陀螺仪包括环形谐振器型气体激光器，激光束相对于彼此以相反方向电路传播，以及拍频信号检测器，用于检测电流，电压或阻抗的变化。

公开(公告)号：US06741354B2

公开(公告)日：2004-05-25

申请号：US09484183

申请日：2000-01-18

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1966

CPC分类号： G01C19/66

摘要： A gyro comprising a laser device for generating laser beams to be propagated circuitally in opposite directions, wherein an electric signal is taken out from the laser device, the oscillation frequencies of the laser beams being different from each other when the laser device is held stationary.

摘要翻译： 一种陀螺仪，包括用于产生要沿相反方向电路传播的激光束的激光装置，其中从激光装置取出电信号，当激光装置保持静止时，激光束的振荡频率彼此不同。