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    • 1. 发明申请
    • Light signal receiving apparatus
    • 光信号接收装置
    • US20050051710A1
    • 2005-03-10
    • US10922966
    • 2004-08-23
    • Yuichi HasebeKiichiro Shinokura
    • Yuichi HasebeKiichiro Shinokura
    • G02B3/00G02B13/00G02B13/18H01J3/14
    • G02B13/002G02B13/18
    • A light signal receiving apparatus receives a light signal transmitted from a light signal transmitting apparatus disposed in a household room, and supplies video and audio information to a video equipment, and an audio equipment including an amplifier and a speaker. The light signal receiving apparatus includes an optical system condensing the light signal on a light-receiving element with a condensing lens. The light-receiving element is disposed nearer the condensing lens in relation to a focusing point of the condensing lens, and the condensing lens includes a non-spherical surface shape strongly distributing, on the light-receiving element, an intensity distribution on a light-receiving element disposed plane of an incident light obliquely incident with respect to an optical axis of the condensing lens within a range of predetermined angles. Thereby, the light signal incident on the condensing lens within a large range can be received at a predetermined light receiving intensity.
    • 光信号接收装置接收从设置在家庭室的光信号发送装置发送的光信号,并将视频和音频信息提供给视频设备,以及包括放大器和扬声器的音频设备。 光信号接收装置包括将光接收元件上的光信号与聚光透镜聚光的光学系统。 光接收元件相对于聚光透镜的聚焦点设置得更靠近聚光透镜,并且聚光透镜在光接收元件上包括强光分布的非球形表面形状, 在预定角度的范围内相对于聚光透镜的光轴倾斜入射的入射光的接收元件设置面。 因此,可以以预定的光接收强度接收入射在大范围内的聚光透镜的光信号。
    • 4. 发明申请
    • Communication System, Communication Apparatus and Method, and Computer Program
    • 通信系统,通信设备与方法,计算机程序
    • US20090052902A1
    • 2009-02-26
    • US11918346
    • 2006-04-12
    • Kiichiro Shinokura
    • Kiichiro Shinokura
    • H04B10/00
    • H04B10/1143H04B10/116
    • A communication system (1) is provided with: a first communication apparatus (100a); and a second communicating apparatus (100b), the first communicating apparatus is provided with: (i) a displaying device (110) which can perform high-speed modulation; (ii) a display dividing device (112) for dividing a display surface of the displaying device into a plurality of display blocks; and (iii) a controlling device (115) for controlling the displaying device to display a display pattern in each of the divided plurality of display blocks, the second communicating apparatus is provided with: (i) a light receiving device (120) for light-receiving the display pattern which is displayed on the displaying device; and (ii) an obtaining device (121) for obtaining the predetermined data on the basis of the light-received display pattern.
    • 通信系统(1)具有:第一通信装置(100a); 和第二通信装置(100b),所述第一通信装置具有:(i)可以执行高速调制的显示装置(110); (ii)用于将显示装置的显示表面划分为多个显示块的显示分割装置(112) 所述第二通信装置具有:(i)用于光的光接收装置(120),所述控制装置(115)用于控制所述显示装置在所述划分的多个显示块中的每一个中显示显示图案, - 接收显示在显示装置上的显示图案; 和(ii)用于基于受光显示图案获得预定数据的获取装置(121)。
    • 7. 发明授权
    • Optical coupling with electric field rotation
    • 光耦合电场旋转
    • US5577140A
    • 1996-11-19
    • US391411
    • 1995-02-16
    • Tetsuro EndoKiichiro Shinokura
    • Tetsuro EndoKiichiro Shinokura
    • G02B6/26G02B6/42G02B27/28G02F1/09G02F1/37G02B6/27
    • G02B6/4209
    • An optical coupling device for coupling a semiconductor laser emitting a diverging laser light to a converging optical system converging the laser light onto a rectangle end surface of an optical wavelength converter, comprises: a rotator for rotating the semiconductor laser about an optical axis thereof; a collimator disposed in the optical axis for converting the diverging laser light to a parallel beam along the optical axis; and a polarization rotator for rotating a plane of the electric field vibration of the parallel beam about the an optical axis to guide the beam to the converging optical system, thereby controlling the plane of the electric field vibration direction of the fundamental wave to couple the fundamental wave to a rectangle end surface at a high efficiency.
    • 一种用于将发射发散激光的半导体激光器耦合到将激光会聚到光波长转换器的矩形端面上的会聚光学系统的光耦合装置,包括:用于使半导体激光器绕其光轴旋转的旋转体; 准直器,设置在光轴上,用于将发散的激光沿着光轴转换成平行光束; 以及偏振旋转器,用于围绕光轴旋转平行光束的电场振动的平面以将光束引导到会聚光学系统,由此控制基波的电场振动方向的平面以将基​​底 以高效率波动到矩形端面。
    • 8. 发明授权
    • Optical wavelength converting device
    • 光波长转换装置
    • US5517525A
    • 1996-05-14
    • US396984
    • 1995-03-01
    • Tetsuro EndoKiichiro Shinokura
    • Tetsuro EndoKiichiro Shinokura
    • G02F1/37H01S3/082H01S3/109H01S5/024H01S5/06H01S5/14H01S3/10
    • H01S3/109H01S3/082H01S5/02248H01S5/02415H01S5/02438H01S5/0612H01S5/141
    • An optical wavelength converting device comprises; a semiconductor laser emitting a fundamental wave; a waveguide-type optical wavelength converting element having a core made of a nonlinear optical material and a clad surrounding the core; and a converging optical system for converging the fundamental wave onto an input end of the waveguide, characterized in that the device further comprises; an adjusting optical system for adjusting a quantity of backward light backed from the optical wavelength converting element to the semiconductor disposed in the coupling optical system; a reflecting portion for reflecting the fundamental wave disposed in the an optical wavelength converting element or the coupling optical system; a current controller for changing an electric current to be supplied to the semiconductor laser; and an optical-path-length stabilizing device comprising a supporting plate for supporting the semiconductor laser, the coupling optical system and the an optical wavelength converting element to keep constant an optical path length between the semiconductor laser and the reflecting portion; and a temperature tuner for changing temperature of at least one of the supporting plate and the semiconductor laser to keep a predetermined temperature thereof constant.
    • 光波长转换装置包括: 发射基波的半导体激光器; 波导型光波长转换元件,其具有由非线性光学材料制成的芯和围绕所述芯的包层; 以及用于将所述基波收敛到所述波导的输入端的会聚光学系统,其特征在于,所述装置还包括: 调整光学系统,用于将从所述光波长转换元件提供的向后光量调整到设置在所述耦合光学系统中的半导体; 用于反射设置在光波长转换元件或耦合光学系统中的基波的反射部分; 用于改变要提供给半导体激光器的电流的电流控制器; 以及光路长度稳定装置,包括用于支撑半导体激光器的支撑板,耦合光学系统和光学波长转换元件,以保持半导体激光器和反射部分之间的光程长度恒定; 以及用于改变支撑板和半导体激光器中的至少一个的温度以保持其预定温度恒定的温度调节器。
    • 9. 发明授权
    • Optical wavelength converter with temperature tuning
    • 具有温度调谐的光波长转换器
    • US5546220A
    • 1996-08-13
    • US386494
    • 1995-02-10
    • Tetsuro EndoKiichiro Shinokura
    • Tetsuro EndoKiichiro Shinokura
    • G02F1/37G02F1/35G02F1/377
    • G02F1/377G02F2001/3546
    • An optical wavelength converter includes an optical wavelength converting element having a multimode waveguide of a core of a nonlinear optical material with a high temperature dependency or temperature coefficient of an index difference for the fundamental wave and secondary harmonic and a clad surrounding the multimode waveguide for converting a wavelength of a fundamental wave entering the multimode waveguide to a 1/2 wavelength of a secondary harmonic; and a temperature tuning device for changing a temperature of the clad and the multimode waveguide within a predetermined temperature range to maintain a phase matching temperature of the fundamental wave and the secondary harmonic in the optical wavelength converting element. The temperature tuner changes the temperature coefficient so as to select a pertinent pair of the fundamental wave and secondary harmonic modes for a wavelength conversion. The multimode waveguide structure has a large sectional area which enables output of a stable high power of secondary harmonic and is easily manufactured.
    • 光波长转换器包括具有高温度依赖性的非线性光学材料的芯的多模波导的光波长转换元件或基波和二次谐波的折射率差的温度系数以及围绕多模波导的包层的转换 进入多模波导的基波的波长为+ E,二次谐波的1/2 + EE波长; 以及用于将包层和多模波导的温度改变到预定温度范围内的温度调节装置,以保持光波长转换元件中的基波和二次谐波的相位匹配温度。 温度调节器改变温度系数,以便选择波长转换的基波和二次谐波模式的一对。 多模波导结构具有大的截面面积,能够输出稳定的二次谐波高功率并容易制造。