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    • 2. 发明授权
    • Optical transmission device
    • 光传输装置
    • US4741595A
    • 1988-05-03
    • US754928
    • 1985-07-15
    • Seiichi OnodaYasumasa KoakutsuMasaaki KusanoTamio TakeuchiSyouji YamadaMasao YanoIchiro IkushimaKiyohide MiyakeToshiki P. Tanaka
    • Seiichi OnodaYasumasa KoakutsuMasaaki KusanoTamio TakeuchiSyouji YamadaMasao YanoIchiro IkushimaKiyohide MiyakeToshiki P. Tanaka
    • G02B6/08G02B6/42
    • G02B6/08G02B6/4204G02B6/4206G02B6/4249
    • In a device for coupling optically a light source with an optical transmission path, the present invention interposes an optical transmission path structure at the center of the distance between them in order to improve the optical coupling efficiency. The optical transmission path structure consists of a plurality of light transmitting elements arranged so that the light from the light source is received by the structure as incident light and is sent out therefrom as outgoing light at an outgoing angle which is equal to the angle of incidence. The light transmitting elements are arranged in parallel with the optical path of the light emitted from the light source and according to this arrangement, the system of the present device becomes equivalent to a system in which the positions of the light source are located at points of .+-.l.sub.1 from the light outgoing surface of the optical transmission path structure. When used with an optical fiber, the optical transmission path structure is disposed such that the distance from the light source to one end face of the optical transmission path structure is the same as the distance from the end face of the means for transmitting to the other end face of the optical transmission path structure.
    • 为了提高光耦合效率,在将光源与光传输路径光学连接的装置中,本发明将光传输路径结构设置在它们之间的距离的中心。 光传输路径结构由多个透光元件组成,其布置成使得来自光源的光被该结构作为入射光被接收,并作为出射光从出射光发射出来,其出射角等于入射角 。 光传输元件与从光源发射的光的光路平行地布置,并且根据这种布置,本装置的系统变得等同于其中光源的位置位于 +/- l1从光传输路径结构的光出射表面。 当与光纤一起使用时,光传输路径结构被设置为使得从光源到光传输路径结构的一个端面的距离与从传输装置的端面到另一端的距离相同 光传输路径结构的端面。
    • 8. 发明申请
    • OPTICAL FIBER SENSING SYSTEM
    • 光纤传感系统
    • US20110141459A1
    • 2011-06-16
    • US13059821
    • 2009-08-20
    • Seiichi OnodaKeiichi InoueMasayuki Nakano
    • Seiichi OnodaKeiichi InoueMasayuki Nakano
    • G01D5/353
    • G01B11/18G01D5/268G01D5/30
    • Provided is an optical fiber sensing system that can carry out measurement accurately without being affected by measurement noise factors other than the physical-quantity attribute of a measurement target object, for example, the effects of the emission power of a light source, fiber insertion loss, fluctuations in the sensitivity of a photo detector, fluctuations in the amplitude of an amplifier or other fluctuations, the loss of optical energy due to the bending of an optical fiber (bending loss), the loss of optical energy due to the connecting of two or more optical fibers by means of connectors (connector loss), the gain fluctuations of electric circuitry provided on a platform, and so forth. A reflective sensor is connected to an end of an optical fiber connected to a light source. The light source outputs physical measurement light. Reflected light coming from the reflective sensor is separated into two beams of light. Information on the physical quantity of a measurement target object is detected on the basis of an intensity ratio of the two beams.
    • 提供一种能够精确地进行测量而不受测量目标物体的物理量属性以外的测量噪声因素的影响的光纤传感系统,例如光源的发射功率的影响,光纤插入损耗 ,光检测器的灵敏度波动,放大器幅度的波动或其他波动,光纤弯曲导致的光能损失(弯曲损耗),由于连接两个光纤的光能损失 或更多的光纤通过连接器(连接器损耗),在平台上提供的电路的增益波动等等。 反射传感器连接到连接到光源的光纤的端部。 光源输出物理测量光。 来自反射传感器的反射光分离成两束光。 基于两个光束的强度比来检测关于测量对象物体的物理量的信息。
    • 9. 发明授权
    • Optical measurement system
    • 光学测量系统
    • US4260883A
    • 1981-04-07
    • US012026
    • 1979-02-14
    • Seiichi OnodaShoji YamadaYasuo MinaiMinoru MaedaShin KitaMitsuo Tanaka
    • Seiichi OnodaShoji YamadaYasuo MinaiMinoru MaedaShin KitaMitsuo Tanaka
    • G01D5/26G01F23/292G01L9/00
    • G01F23/292G01D5/268G01L9/0007G01L9/0077
    • An optical measurement system for eliminating the influences of time variations on light sources, transmission lines, photo detectors, etc. The system includes light sources which generate two pulse-shaped optical signals of different light wavelengths with a portion of the optical signals being transmitted to a measuring part in a distant place by a transmission line. In the measuring part, a change of a measured object is converted into a variation in the quantity of transmission of light, and the optical signal subjected to the variation is transmitted to a signal processing portion by a transmission line. The varied optical signal is converted into a first electric signal by a photo detector. Another portion of the optical signals from the light sources is converted into a second electric signal by another photo detector. A signal processing circuit provides a measurement output indicative of the quantity of change of the measured object as a function of at least one ratio of the first and second electric signals.
    • 一种用于消除光源,传输线,光电检测器等时间变化影响的光学测量系统。该系统包括产生两个不同光波长的脉冲形光信号的光源,一部分光信号被传输到 通过传输线在远处的测量部件。 在测量部分中,测量对象的变化被转换为光的透射量的变化,并且经过变化的光信号通过传输线传输到信号处理部分。 通过光电检测器将变化的光信号转换成第一电信号。 来自光源的光信号的另一部分由另一光检测器转换成第二电信号。 信号处理电路提供指示被测量物体的变化量的测量输出作为第一和第二电信号的至少一个比率的函数。