公开(公告)号：US5392148A

公开(公告)日：1995-02-21

申请号：US984530

申请日：1992-12-02

申请人： Yasuhiro Takahashi ,  Tetsuo Sakanaka

发明人： Yasuhiro Takahashi ,  Tetsuo Sakanaka

IPC分类号： H04B10/11 ,  H04B10/07 ,  H04B10/112 ,  H04B10/80 ,  H04B10/00

CPC分类号： H04B10/11 ,  H04B10/1127

摘要： An optical communicating apparatus has an optical transmitting unit and an optical receiving unit which are accommodated in the same casing. The apparatus is provided with a distributing circuit for supplying a power source to the optical transmitting unit and the optical receiving unit. A modulation device and a demodulation device are connected to the optical space communicating apparatus. The modulation device modulates a transmission signal and has a first power source unit to supply a power source to the distributing circuit. The demodulation device demodulates a reception signal and has a second power source unit to supply a power source to the distributing circuit. A switching device is arranged between the distributing circuit and the first power source unit or between the distributing circuit and the second power source unit. The switching device selects either one of the first and second power source units to connect the selected power source unit to the distributing circuit, so that the power source is applied to each unit in the apparatus through the distributing circuit.

摘要翻译： 光通信装置具有容纳在同一壳体中的光发送单元和光接收单元。 该装置设置有用于向光发射单元和光接收单元提供电源的分配电路。 调制装置和解调装置连接到光空间通信装置。 调制装置调制发送信号，并且具有第一电源单元，以向分配电路提供电源。 解调装置解调接收信号，并具有第二电源单元，以向分配电路提供电源。 开关装置布置在分配电路和第一电源单元之间或配电电路和第二电源单元之间。 开关装置选择第一和第二电源单元中的一个将所选择的电源单元连接到分配电路，从而通过分配电路将电源施加到装置中的每个单元。

公开(公告)号：US5610748A

公开(公告)日：1997-03-11

申请号：US415586

申请日：1995-04-03

申请人： Tetsuo Sakanaka ,  Yasuhiro Takahashi

发明人： Tetsuo Sakanaka ,  Yasuhiro Takahashi

IPC分类号： H04J14/08 ,  H04B10/079 ,  H04B10/11 ,  H04B10/112 ,  H04B10/54 ,  H04B10/564 ,  H04B10/00

CPC分类号： H04B10/114

摘要： An optical space communication apparatus comprises a transmitter and a receiver. The transmitter has a main signal generator for producing a main signal, an auxiliary signal generator for producing an auxiliary signal in a frequency band different from that of the main signal, a combiner for combining the main signal with the auxiliary signal, an electro-optical converter for converting a combined signal of the main signal and the auxiliary signal into a light signal, and a transmission optical system for transmitting the light signal formed in light beam. The receiver has a reception optical system for receiving the light signal in light beam and a photo-electric converter for converting the light signal into an electric signal. The receiver further has a separator for separating the electric signal converted by the photo-electric converter into a main signal and an auxiliary signal, and an auxiliary signal detector for detecting the auxiliary signal separated by the separator.

摘要翻译： 光学空间通信设备包括发射机和接收机。 发射机具有用于产生主信号的主信号发生器，用于产生与主信号不同的频带的辅助信号的辅助信号发生器，用于组合主信号与辅助信号的组合器，电光 转换器，用于将主信号和辅助信号的组合信号转换为光信号;以及发送光学系统，用于发送以光束形成的光信号。 接收机具有用于接收光束中的光信号的接收光学系统和用于将光信号转换为电信号的光电转换器。 接收器还具有用于将由光电转换器转换的电信号分离成主信号和辅助信号的分离器，以及用于检测由分离器分离的辅助信号的辅助信号检测器。

公开(公告)号：US07489871B2

公开(公告)日：2009-02-10

申请号：US11007364

申请日：2004-12-08

申请人： Yasuhiro Takahashi ,  Ryuji Ohmuro ,  Tetsuo Sakanaka

发明人： Yasuhiro Takahashi ,  Ryuji Ohmuro ,  Tetsuo Sakanaka

IPC分类号： H04B10/00

CPC分类号： H04B10/1125

摘要： A free space optics communication apparatus which performs optical axis correction with high accuracy is disclosed. The free space optics communication apparatus of the present invention includes a first light receiving element and a second light receiving element, a light converging optical system which converges a light flux incident from the outside to form a spot of the light flux on each of light receiving surfaces of the first and second light receiving elements, and information producing section which combines outputs from the first and second light receiving elements to produce information on positions of the spots. The spots formed on the light receiving surfaces of the first and second light receiving elements have a point-symmetrical relationship.

摘要翻译： 公开了一种以高精度执行光轴校正的自由空间光通信装置。 本发明的自由空间光通信装置包括第一受光元件和第二光接收元件，会聚光学系统会聚从外部入射的光束，以在每个光接收上形成光通量点 第一和第二光接收元件的表面和组合来自第一和第二光接收元件的输出的信息产生部分，以产生关于点的位置的信息。 形成在第一和第二光接收元件的光接收表面上的光斑具有点对称关系。

公开(公告)号：US20050141897A1

公开(公告)日：2005-06-30

申请号：US11007364

申请日：2004-12-08

申请人： Yasuhiro Takahashi ,  Ryuji Ohmuro ,  Tetsuo Sakanaka

发明人： Yasuhiro Takahashi ,  Ryuji Ohmuro ,  Tetsuo Sakanaka

IPC分类号： H04B10/11 ,  H04B10/112 ,  H04B10/00

CPC分类号： H04B10/1125

摘要： A free space optics communication apparatus which performs optical axis correction with high accuracy is disclosed. The free space optics communication apparatus of the present invention includes a first light receiving element and a second light receiving element, a light converging optical system which converges a light flux incident from the outside to form a spot of the light flux on each of light receiving surfaces of the first and second light receiving elements, and information producing section which combines outputs from the first and second light receiving elements to produce information on positions of the spots. The spots formed on the light receiving surfaces of the first and second light receiving elements have a point-symmetrical relationship.

摘要翻译： 公开了一种以高精度执行光轴校正的自由空间光通信装置。 本发明的自由空间光通信装置包括第一受光元件和第二光接收元件，会聚光学系统会聚从外部入射的光束，以在每个光接收上形成光通量点 第一和第二光接收元件的表面以及组合来自第一和第二光接收元件的输出的信息产生部分，以产生关于点的位置的信息。 形成在第一和第二光接收元件的光接收表面上的光斑具有点对称关系。

公开(公告)号：US20050265724A1

公开(公告)日：2005-12-01

申请号：US11139328

申请日：2005-05-27

申请人： Tetsuo Sakanaka ,  Masatoshi Otsubo

发明人： Tetsuo Sakanaka ,  Masatoshi Otsubo

IPC分类号： H04B10/11 ,  H04B10/07 ,  H04B10/114 ,  H04B10/00

CPC分类号： H04B10/1125

摘要： An optical-space transmission apparatus for use in communication by using light propagating in a space includes a light-receiving unit, an optical system including a movable mirror and introducing light incident thereon to the light receiving unit with the movable mirror, a controller controlling drive of the movable mirror, and a detecting unit detecting an intensity of the light received in the light-receiving unit. The controller modifies a control characteristic of the movable mirror in accordance with a change in the received-light intensity.

摘要翻译： 用于通过使用在空间中传播的光进行通信的光学空间传输装置包括：光接收单元，包括可移动反射镜的光学系统，并将入射到其上的光引入到具有可移动反射镜的光接收单元;控制器，控制驱动器 以及检测单元，其检测在所述光接收单元中接收的光的强度。 控制器根据接收光强度的变化来修改可移动镜的控制特性。

公开(公告)号：US06507424B2

公开(公告)日：2003-01-14

申请号：US09176333

申请日：1998-10-22

申请人： Tetsuo Sakanaka

发明人： Tetsuo Sakanaka

IPC分类号： H04B1000

CPC分类号： H04B10/11

摘要： An optical space communication apparatus for performing communication with an party apparatus by transmitting a light signal into a free space includes a signal selector for selecting and intercepting a beam including a light beam and background light from the party apparatus, a detector for detecting a beam via the signal selector, and a signal outputting device for comparing an output signal outputted from the detector when the signal selector intercepts the light beam from the party apparatus, with an output signal outputted from the detector when the signal selector does not intercept the light beam from the party apparatus, and for outputting a signal representing a difference between the output signals.

摘要翻译： 一种光学空间通信装置，用于通过将光信号发送到自由空间来与对方装置进行通信包括：信号选择器，用于选择和截取包括来自所述方装置的光束和背景光的束;检测器，用于检测光束通过 信号选择器和信号输出装置，用于当信号选择器截取来自方装置的光束时，从检测器输出的输出信号与从检测器输出的输出信号进行比较，当信号选择器不拦截来自 并且用于输出表示输出信号之间的差的信号。

公开(公告)号：US5500754A

公开(公告)日：1996-03-19

申请号：US974997

申请日：1992-11-12

申请人： Kanjo Orino ,  Mikio Sakai ,  Tetsuo Sakanaka

发明人： Kanjo Orino ,  Mikio Sakai ,  Tetsuo Sakanaka

IPC分类号： G02B27/28 ,  H04B10/00 ,  H04B10/112

CPC分类号： H04B10/40

摘要： A two-way optical transmitter in which optical transmitters each having light projecting means and light receiving means on an optical axis intersecting the optical axis of the light projecting means are disposed in opposed relationship with each other with a predetermined distance interposed therebetween and which effects two-way optical transmission, wherein a polarizing beam splitter, having a cemented surface forming a certain angle with respect to the optical axes of the light projecting means and the light receiving means is installed near the point of intersection between the two optical axes, linearly polarized light from the light projecting means is reflected by the cemented surface of the polarizing beam splitter to thereby provide transmission light, and an optical axis leading from the polarizing beam splitter to the light projecting means or an optical axis leading from the polarizing beam splitter to the light receiving means is set at an angle of approximately 45.degree. with respect to the vertical direction when the apparatus is seen from on the optical axis of the transmitted light.

摘要翻译： 一种双向光发射机，其中在与光投射装置的光轴相交的光轴上具有光投射装置和光接收装置的光发射器以彼此间隔开的预定距离彼此相对设置， 其中具有相对于所述光投射装置和所述光接收装置的光轴形成一定角度的胶合表面的偏振光束分离器安装在所述两个光轴之间的相交点附近，线偏振 来自光投射装置的光被偏振分束器的胶合表面反射，从而提供透射光，以及从偏振分束器引导到光投射装置的光轴或从偏振分束器引导到光轴的光轴 光接收装置设置成大约45°的角度 当从透射光的光轴上观察装置时，相对于垂直方向。

公开(公告)号：US5105294A

公开(公告)日：1992-04-14

申请号：US368840

申请日：1989-06-20

申请人： Yasusaburo Degura ,  Tetsuo Sakanaka ,  Haruo Imano

发明人： Yasusaburo Degura ,  Tetsuo Sakanaka ,  Haruo Imano

IPC分类号： H04B1/69 ,  H04B10/10 ,  H04B10/112 ,  H04L27/10

CPC分类号： H04B10/1121 ,  H04L27/10 ,  H04L27/103 ,  H04B2001/6912

摘要： There are provided digital communicating method and apparatus for modulating digital signals into chirp signals and performing the communication. In this method, pulses indicative of digital signals of codes "1" and "0" are modulated, the modulated pulse signals are converted into chirp signals, the chirp signals are converted into the optical signals and output as transmission signals, and the digital signals are input and the pulses based thereon are generated. A wave of a predetermined frequency is multiplied by the pulses indicative of "1" and "0" of the digital signals and the modulation is executed. The communication signals can be converted into the chirp signals by the chirp conversion elements using the surface acoustic wave-dispersive delay lines having different converting characteristics by the simple construction. On the reception side, the modulated signals are demodulated by the chirp conversion elements having characteristics opposite to those of the chirp conversion elements on the transmission side. Thus, the code signals of "1" and "0" can be accurately discriminated and the error rate can be reduced. The communication reliability is improved.

摘要翻译： 提供了用于将数字信号调制成啁啾信号并进行通信的数字通信方法和装置。 在该方法中，调制表示代码“1”和“0”的数字信号的脉冲，将调制脉冲信号转换成啁啾信号，将啁啾信号转换为光信号并作为传输信号输出，数字信号 并且产生基于其的脉冲。 将预定频率的波乘以表示数字信号的“1”和“0”的脉冲，并执行调制。 通过简单的结构，通过使用具有不同转换特性的表面声波分散延迟线，通过啁啾转换元件将通信信号转换成啁啾信号。 在接收侧，调制信号由具有与发送侧的啁啾转换元件相反特性的啁啾转换元件解调。 因此，可以精确地识别“1”和“0”的代码信号，并且可以降低错误率。 通信可靠性得到提高。

公开(公告)号：US06819873B2

公开(公告)日：2004-11-16

申请号：US09838277

申请日：2001-04-20

申请人： Tetsuo Sakanaka

发明人： Tetsuo Sakanaka

IPC分类号： H04B1000

摘要： An optical free-space communication apparatus includes a first light-emitting source for emitting a first transmission optical beam having a plane of polarization in a predetermined direction, the first transmission optical beam being modulated according to a primary signal containing communication information, a second light-emitting source for emitting a second transmission optical beam having a plane of polarization perpendicular to the plane of polarization of the first transmission optical beam, the second transmission optical beam being modulated according to an auxiliary signal for angle detection, a transmitting optical system for emitting the first and second transmission optical beams out of the apparatus as optical beams each having a predetermined angle of divergence, and a driving unit for redirecting the outgoing paths of the first and second transmission optical beams, wherein the second transmission optical beam has a larger angle of divergence than the first transmission optical beam.

公开(公告)号：US5680241A

公开(公告)日：1997-10-21

申请号：US614263

申请日：1996-03-12

申请人： Tetsuo Sakanaka ,  Kanjo Orino

发明人： Tetsuo Sakanaka ,  Kanjo Orino

IPC分类号： H04B10/10 ,  H04B10/00

CPC分类号： H04B10/1121

摘要： An optical space communication method is for communication with a laser as a radiative source and with a light signal therefrom propagating in the atmosphere. In the method, the communication is performed under the following conditions. In case a transmission distance of optical space communication is between 100 m inclusive and 200 m, the laser is a laser with an oscillation wavelength L (nm) in a wavelength range of between 967 run inclusive and 1110 nm or in a wavelength range of between 1165 nm inclusive and 1315 nm, whereas in case the transmission distance is not less than 200 m, the laser is a laser with an oscillation wavelength L (run) in a wavelength range of between 986 nm inclusive and 1090 nm or in a wavelength range of between 1225 nm inclusive and 1295 nm. At any position in a transmission path between a transmitter exit and a receiver entrance, an irradiance is set to at most 6.47.multidot.10.sup.(L-700)/500 (W/m.sup.2) where the oscillation wavelength L (nm) of the laser is in a wavelength range of 950 nm to 1050 nm while to at most 32.3 (W/m.sup.2) where the oscillation wavelength L is in a wavelength range of 1050 nm to 1400 nm.

摘要翻译： 光学空间通信方法用于与激光作为辐射源通信，并且其光信号在大气中传播。 在该方法中，在以下条件下进行通信。 在光学空间通信的传输距离在100微米到200微米之间的情况下，激光器是在波长范围为967nm至1110nm之间或在波长范围内的振荡波长L（nm）的激光器 1165nm和1315nm，而在传输距离不小于200μm的情况下，激光是在986nm至1090nm之间或在波长范围内具有振荡波长L（游程）的激光器 在1225nm和1295nm之间。 在发射器出口和接收器入口之间的传输路径中的任何位置，辐射度被设定为激光器的振荡波长L（nm）为至多6.47×10（L-700）/ 500（W / m 2） 波长范围为950nm至1050nm，而至多32.3（W / m 2），其中振荡波长L在1050nm至1400nm的波长范围内。