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    • 1. 发明授权
    • Optical transmitter circuit
    • 光发射机电路
    • US07907852B2
    • 2011-03-15
    • US11657105
    • 2007-01-24
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/20
    • H01S5/06832H01S5/0427H04B10/504H04B10/508
    • A first peaking current generating section generates a first peaking current in synchronism with the transitions of a digital signal, being positive at the rising edge and negative at the falling edge. A second peaking current generating section generates a second peaking current in synchronism with the transitions of the digital signal, being negative at the rising edge and positive at the falling edge. A first light emitting element driving section produces a first driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal and a first peaking current. A second light emitting element driving section produces a second driving current obtained by combining together the signal amplitude current according to the amplitude of the digital signal and a second peaking current. Then, the first and second light emitting element driving sections and drive the light emitting element by using a driving current obtained by subtracting the first driving current from the second driving current.
    • 第一峰值电流产生部分与数字信号的转变同步地产生第一峰值电流,在上升沿为正,在下降沿为负。 第二峰值电流产生部分与数字信号的转变同步产生第二峰值电流,在上升沿为负,在下降沿为正。 第一发光元件驱动部产生通过根据数字信号的振幅和第一峰值电流组合信号幅度电流而获得的第一驱动电流。 第二发光元件驱动部产生通过根据数字信号的振幅和第二峰值电流组合信号振幅电流而获得的第二驱动电流。 然后,第一和第二发光元件驱动部分通过使用从第二驱动电流减去第一驱动电流而获得的驱动电流来驱动发光元件。
    • 5. 发明授权
    • Optical transmitter circuit
    • 光发射机电路
    • US07912379B2
    • 2011-03-22
    • US12280076
    • 2007-02-20
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/20
    • H04B10/502H04B10/564
    • A peaking current generating section generates a spire-shaped peaking current that is in synchronism with the transitions of the digital signal, at the rising edge and the falling edge. A light emitting element driving section produces a driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal and the peaking current. Then, the light emitting element driving section drives a light emitting element by using the driving current. A signal analysis section analyzes the digital signal so as to set a control signal based on the pulse width of the digital signal. A clipping section clips the peaking current of the driving current according to the control signal set by the signal analysis section.
    • 峰值电流产生部分在上升沿和下降沿产生与数字信号的转变同步的尖峰形峰值电流。 发光元件驱动部产生通过根据数字信号的振幅和峰值电流组合信号幅度电流而获得的驱动电流。 然后,发光元件驱动部通过使用驱动电流来驱动发光元件。 信号分析部分分析数字信号,以便根据数字信号的脉冲宽度来设置控制信号。 剪辑部分根据由信号分析部分设置的控制信号剪切驱动电流的峰值电流。
    • 6. 发明申请
    • Optical transmitter circuit
    • 光发射机电路
    • US20070171946A1
    • 2007-07-26
    • US11657105
    • 2007-01-24
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H01S3/13
    • H01S5/06832H01S5/0427H04B10/504H04B10/508
    • A first peaking current generating section 1 generates a first peaking current P1 in synchronism with the transitions of a digital signal S, being positive at the rising edge and negative at the falling edge. A second peaking current generating section 3 generates a second peaking current P2 in synchronism with the transitions of the digital signal S, being negative at the rising edge and positive at the falling edge. A first light emitting element driving section 2 produces a first driving current D1 obtained by combining together a signal amplitude current according to the amplitude of the digital signal S and a first peaking current P1. A second light emitting element driving section 4 produces a second driving current D2 obtained by combining together the signal amplitude current according to the amplitude of the digital signal S and a second peaking current P2. Then, the first and second light emitting element driving sections 2 and 4 drive the light emitting element 5 by using a driving current D3 obtained by subtracting the first driving current D1 from the second driving current D2.
    • 第一峰值电流产生部分1与数字信号S的跃迁同步地产生第一峰值电流P 1,其在上升沿为正,在下降沿为负。 第二峰值电流产生部分3产生与数字信号S的跃迁同步的第二峰值电流P 2,在上升沿为负,在下降沿为正。 第一发光元件驱动部分2产生通过根据数字信号S的振幅和第一峰值电流P1将信号幅度电流组合在一起获得的第一驱动电流D1。第二发光元件驱动部分4产生第二驱动电流 通过根据数字信号S的振幅和第二峰值电流P 2将信号幅度电流组合在一起而获得的驱动电流D 2。然后,第一和第二发光元件驱动部分2,4驱动发光元件5 使用从第二驱动电流D 2减去第一驱动电流D 1而获得的驱动电流D 3。
    • 7. 发明申请
    • OPTICAL TRANSMITTER CIRCUIT
    • 光发射机电路
    • US20100166436A1
    • 2010-07-01
    • US12280076
    • 2007-02-20
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/04
    • H04B10/502H04B10/564
    • A peaking current generating section (2) generates a spire-shaped peaking current that is in synchronism with the transitions of the digital signal (S), at the rising edge and the falling edge. A light emitting element driving section (5) produces a driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal (S) and the peaking current. Then, the light emitting element driving section (5) drives a light emitting element (1) by using the driving current. A signal analysis section (9) analyzes the digital signal (S) so as to set a control signal based on the pulse width of the digital signal (S). A clipping section (8) clips the peaking current of the driving current according to the control signal set by the signal analysis section (9).
    • 峰值电流产生部分(2)在上升沿和下降沿产生与数字信号(S)的转变同步的尖峰形峰值电流。 发光元件驱动部(5)产生通过根据数字信号(S)的振幅和峰化电流组合信号振幅电流而获得的驱动电流。 然后,发光元件驱动部(5)通过使用驱动电流来驱动发光元件(1)。 信号分析部(9)分析数字信号(S),以便根据数字信号(S)的脉冲宽度设定控制信号。 剪辑部分(8)根据由信号分析部分(9)设置的控制信号剪切驱动电流的峰值电流。
    • 9. 发明授权
    • Light emitting module and light receiving module
    • 发光模块和光接收模块
    • US07733580B2
    • 2010-06-08
    • US11934315
    • 2007-11-02
    • Tomoaki IedaHiroyuki Sasai
    • Tomoaki IedaHiroyuki Sasai
    • G02B3/08
    • G02B3/08
    • A plurality of first refraction surfaces 121 and a plurality of second refraction surfaces 122 are alternately provided on an emission surface of a lens element 120 so as to form concentric circles each having an optical axis 113 at the center thereof, and having diameters different from each other, and a light reflected by a plurality of reflection surfaces 123 provided on an incident surface of the lens element so as to form concentric circuits each having the optical axis 113 at the center thereof and having diameters different from each other, is refracted and emitted by the plurality of second refraction surfaces 122 at desired angles. Therefore, it is possible to enhance efficiency and an emission intensity, and reduce variations in brightness of an emitted light without increasing the diameter of the lens element 120, thereby realizing a light emitting module 100 enabling advantageous performance.
    • 在透镜元件120的发射表面上交替设置多个第一折射面121和多个第二折射面122,以形成同心圆,其中心具有光轴113,并且具有不同于每一个的直径 并且由设置在透镜元件的入射表面上的多个反射表面123反射以便形成其中心具有彼此具有直径不同的光轴113的同心电路的光被折射和发射 通过多个第二折射表面122以期望的角度。 因此,可以提高效率和发光强度,并且可以在不增加透镜元件120的直径的情况下降低发光的亮度变化,从而实现具有有利性能的发光模块100。
    • 10. 发明授权
    • Optical space transmitter and optical space transmission method for wavelength-multiplexed light
    • 用于波长复用光的光学空间发射器和光学空间传输方法
    • US08064772B2
    • 2011-11-22
    • US11579831
    • 2006-02-02
    • Tomoaki Ieda
    • Tomoaki Ieda
    • H04B10/00H04J14/02
    • H04B10/1121H04B10/506H04J14/02
    • Provided is an optical space transmitter and an optical space transmission method, for wavelength-multiplexed light, capable of obtaining a wavelength-multiplexed signal by multiplexing optical signals having a plurality of wavelengths with a simple configuration and without requiring highly precise adjustment for optical axes and enhancing safety for a human body. The transmitter has a configuration for which light sources for outputting signal lights having wavelengths different from each other are arranged so as to irradiate an approximately identical portion of a diffusion plate, a diffuse light outputted from the diffusion plate is converted, by a radiation lens, into a light traveling with an angle suitable for transmission in a free space, and the converted light is passed out to the free space.
    • 提供了一种用于波长多路复用光的光学空间发射器和光学空间传输方法,其能够通过以简单的配置多路复用具有多个波长的光信号而获得波长复用信号,并且不需要对光轴进行高精度的调整, 增强人体的安全性。 发射机具有用于输出具有彼此不同波长的信号光的光源的配置,以便照射扩散板的大致相同部分,通过辐射透镜来转换从扩散板输出的漫射光, 以适于在自由空间中传输的角度行进的光,并且转换的光被传出到自由空间。