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    • 42. 发明公开
    • Superfluorescent source
    • Superfluoreszierende Quelle。
    • EP0595595A1
    • 1994-05-04
    • EP93308511.0
    • 1993-10-26
    • Litton Systems, Inc.
    • Fidric, Bernard G.
    • H01S3/06G01C19/72
    • G01C19/721H01S3/06712H01S3/06795
    • A superfluorescent broadband fiber laser source comprises an optical fiber 10 doped with a laser material and having one end pumped with pump light of sufficient intensity to produce amplified spontaneous emission within the fiber and forward and backward waves therefrom. The polarisation of the backward wave experiences a 45° rotation as it travels into and another 45° rotation as it passes back out of a 45° Faraday rotator mirror device 26. An amplified polarisation-rotated beam from the doped fiber is divided into orthogonally polarised beams in a polarisation beam splitter coupler 32. A return polarised signal from an interferometer 40 is passed through the doped fiber 10, the Faraday rotator mirror device 26 and again through the doped fiber 10 for producing a polarised output signal that has been amplified by four passes through the doped fiber.
    • 超荧光宽带光纤激光源包括掺杂有激光材料的光纤10,并且其一端用足够强度的泵浦光泵浦,以在光纤内产生放大的自发发射,并从其中产生向前和向后的波。 反向波的极化在其从45°法拉第旋转镜装置26返回时进入45°旋转并且另外45°旋转。来自掺杂光纤的放大的偏振旋转光束被分成正交极化 偏振分束器耦合器32中的光束。来自干涉仪40的返回偏振信号通过掺杂光纤10法拉第转子镜装置26,并再次穿过掺杂光纤10,用于产生已经被四放大的偏振输出信号 通过掺杂光纤。
    • 43. 发明公开
    • Optical-interference-type angular rate sensor
    • Optischer干涉仪Drehgeschwindigkeitssensor。
    • EP0569993A1
    • 1993-11-18
    • EP93107836.4
    • 1993-05-13
    • JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    • Okada, Kenichi, c/o Japan Aviation Elect. Ind. LtdUsui, Ryuji
    • G01C19/72
    • G01C19/721
    • Clockwise and counterclockwise light beams, which have a Sagnac phase difference caused by an angular rate in an optical fiber coil (15), are combined into interference light, which is converted by a photodetector (17) into an electrical signal (Vp). A sine component and a cosine component of the Sagnac phase difference ΔΦ s in the output of the photodetector are detected by first and second synchronous detectors (18,25), respectively, and the sine component is used as the fiber optic gyro output and it is provided to a correcting signal generator (27) to produce a correcting signal (Vc). The detected cosine component is added by an adder (29) to the correcting signal, and the added output is compared by a differential amplifier (31) with a reference voltage (V R ) and the resulting error signal (Ve) is produced. The error signal is applied to an integrating filter (33), the output of which is used to control the quantity of light to be emitted from a light source (11) or the gain of the photodetector output, forming a feedback loop so that the error signal is reduced to zero.
    • 具有由光纤线圈(15)中的角速率引起的Sagnac相位差的顺时针和逆时针光束被组合成由光电检测器(17)转换成电信号(Vp)的干涉光。 光电检测器输出端的Sagnac相位差DELTA PHI s的正弦分量和余弦分量分别由第一和第二同步检波器(18,25)检测,正弦分量用作光纤陀螺输出, 提供给校正信号发生器(27)以产生校正信号(Vc)。 通过加法器(29)将检测到的余弦分量加到校正信号,并且通过差分放大器(31)将相加的输出与参考电压(VR)进行比较,并产生所得到的误差信号(Ve)。 误差信号被施加到积分滤波器(33),其输出用于控制从光源(11)发射的光量或光电检测器输出的增益,形成反馈回路,使得 误差信号减小到零。
    • 45. 发明公开
    • Fiber optic gyro
    • 光纤陀螺仪
    • EP0551874A3
    • 1993-09-08
    • EP93100385.9
    • 1993-01-13
    • JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    • Ohno, Aritaka, c/o Japan Aviation Elec. Ind. Ltd.Motohara, Shinji, c/o Japan Aviation El. Ind. Ltd.
    • G01C19/72H04N1/028
    • G01C19/721
    • Light emitted from a semiconductor light emitting element (11A) in a light source unit (11) is provided to an optical splitter/coupler (14), from which it is provided as clockwise and counterclockwise light beams (LB1, LB2) to both ends of an optical fiber coil (16), respectively. An optical phase modulator (17) is interposed between one end of the optical fiber coil and the optical splitter/coupler. The both light beams having propagated through the optical fiber coil interfere with each other in the optical splitter/coupler. The resulting interference light is applied to a front light emitting end face of the semiconductor light emitting element and is emitted from its rear light emitting end face, together with a backward light beam (LB2), thereafter being received by a light receiving element (11C). A DC component of the output from the light receiving element is input into a quantity-of-light stabilizer (11D) to stabilize the power of light that is emitted from the light emitting element. A high-frequency component of the output from the light receiving element is synchronously detected by a synchronous detector (21).
    • 从光源单元(11)中的半导体发光元件(11A)发射的光被提供给分光器/耦合器(14),从该分光器/耦合器(14)提供作为顺时针和逆时针光束(LB1,LB2) 的光纤线圈(16)。 光学相位调制器(17)插入在光纤线圈的一端和分光器/耦合器之间。 已经传播通过光纤线圈的两束光束在分光器/耦合器中彼此干涉。 所产生的干涉光被施加到半导体发光元件的正面发光端面,并且从其后发光端面与反向光束(LB2)一起发射,然后被光接收元件(11C )。 来自光接收元件的输出的DC分量被输入到光量稳定器(11D)中以稳定从发光元件发射的光的功率。 来自光接收元件的输出的高频分量由同步检测器(21)同步检测。
    • 46. 发明公开
    • Fiber optic gyro
    • Faseroptischer Kreisel。
    • EP0551874A2
    • 1993-07-21
    • EP93100385.9
    • 1993-01-13
    • JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    • Ohno, Aritaka, c/o Japan Aviation Elec. Ind. Ltd.Motohara, Shinji, c/o Japan Aviation El. Ind. Ltd.
    • G01C19/72H04N1/028
    • G01C19/721
    • Light emitted from a semiconductor light emitting element (11A) in a light source unit (11) is provided to an optical splitter/coupler (14), from which it is provided as clockwise and counterclockwise light beams (LB1, LB2) to both ends of an optical fiber coil (16), respectively. An optical phase modulator (17) is interposed between one end of the optical fiber coil and the optical splitter/coupler. The both light beams having propagated through the optical fiber coil interfere with each other in the optical splitter/coupler. The resulting interference light is applied to a front light emitting end face of the semiconductor light emitting element and is emitted from its rear light emitting end face, together with a backward light beam (LB2), thereafter being received by a light receiving element (11C). A DC component of the output from the light receiving element is input into a quantity-of-light stabilizer (11D) to stabilize the power of light that is emitted from the light emitting element. A high-frequency component of the output from the light receiving element is synchronously detected by a synchronous detector (21).
    • 在光源单元(11)中从半导体发光元件(11A)发射的光被提供给光分路器/耦合器(14),从而从光学单元(12)向两端设置顺时针和逆时针光束(LB1,LB2) 的光纤线圈(16)。 光学相位调制器(17)插入在光纤线圈的一端和光分路器/耦合器之间。 已经通过光纤线圈传播的两束光束在光分路器/耦合器中相互干扰。 所产生的干涉光被施加到半导体发光元件的前发光端面,并与后向光束(LB2)一起从其后发光端面发射,之后由光接收元件(11C)接收 )。 来自光接收元件的输出的DC分量被输入到光量稳定器(11D)中,以稳定从发光元件发射的光的功率。 来自光接收元件的输出的高频分量由同步检测器(21)同步检测。
    • 47. 发明公开
    • DEMODULATION REFERENCE SIGNAL SOURCE
    • 解调参考信号源
    • EP0535164A1
    • 1993-04-07
    • EP91915555.0
    • 1991-06-13
    • HONEYWELL INC.
    • BLAKE, JamesDANE, PrestonDANKWORT, Rudolf
    • G01C19
    • G01C19/721
    • Système de recherche documentaire destiné à extraire des informations d'une paire d'ondes électromagnétiques cohérentes représentées par des différences de phase entre ces dernières, chacune étant incidente sur un photodétecteur, et comportant un démodulateur recevant le signal de sortie du photodétecteur et recevant également un signal de référence. Le signal de référence est obtenu par l'emploi d'un détecteur de déphasage recevant le signal du photodétecteur afin de déterminer certains déphasages se produisant dans ce dernier, et transmettant ces informations à une alimentation en signaux de référence afin d'ajuster la phase de son signal de sortie qui ensuite sert de signal de référence au démodulateur.
    • 用于从一对由其间,每个入射在光检测器,以及具有用于接收所述光检测器输出信号的解调器,并且还接收一相位差表示相干的电磁波中提取信息检索系统 参考信号。 该参考信号由接收光检测器的信号,以确定在其中发生的某些的相移,和传送该信息给基准信号供给到调整相位使用的相位检测器的得到的 其输出信号作为解调器的参考信号。