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    • 22. 发明授权
    • Sensor and method for detecting changes in distance
    • 用于检测距离变化的传感器和方法
    • US06727491B1
    • 2004-04-27
    • US09890394
    • 2001-12-21
    • Wolfgang DultzGisela DultzErna FrinsHeidrun Schmitzer
    • Wolfgang DultzGisela DultzErna FrinsHeidrun Schmitzer
    • G01J400
    • G01D5/344G01B11/18
    • The present invention is directed to a sensor for detecting changes in the distance between a first and a second location, having at, least one substantially helically coiled optical fiber, which is able to be mechanically connected to at least one of the locations, and having a light transmitter and a detecting device for optical signals, the detecting device being able to generate an output signal, which is dependent upon the polarization state of the optical signal transmitted via the optical fiber. The present invention is also directed to a method for detecting the changes in distance between a first and a second location, having the following features: at least one of the locations is mechanically coupled to a substantially helically coiled optical fiber; an optical signal having a known polarization state is launched into the optical fiber; following transmission over the connecting line, this is detected in such a way that information is obtained with respect to its polarization state; from this information, the change in distance is determined.
    • 本发明涉及一种用于检测第一和第二位置之间的距离的变化的传感器,该传感器具有至少一个基本上螺旋状的卷绕的光纤,该光纤能够机械地连接到至少一个位置,并具有 用于光信号的光发射器和检测装置,所述检测装置能够产生取决于通过光纤传输的光信号的偏振状态的输出信号。 本发明还涉及一种用于检测第一和第二位置之间的距离变化的方法,具有以下特征:至少一个位置机械耦合到基本上螺旋状的卷绕的光纤; 具有已知偏振状态的光信号被发射到光纤中; 在通过连接线路传输之后,以这样的方式检测该信号,即相对于其极化状态获得信息; 从该信息,确定距离的变化。
    • 23. 发明授权
    • Liquid crystalline materials for optical phase modulation
    • 用于光学相位调制的液晶材料
    • US06649087B1
    • 2003-11-18
    • US09914250
    • 2001-08-24
    • Wolfgang DultzLeonid BeresnevWolfgang HaaseSergei PikinThomas Weyrauch
    • Wolfgang DultzLeonid BeresnevWolfgang HaaseSergei PikinThomas Weyrauch
    • C09K1952
    • C09K19/02G02F1/141Y10T428/10
    • A liquid crystalline material having a lamellar structure can be used for phase modulation. A liquid crystal having arcuated or angular dimer molecules so that the molecules each include two central units, and the longitudinal axes of the two central units exhibit at least approximately oppositely directed inclination angles with respect to the layer normal z. By configuring the two central units of the dimer molecule in accordance with the present invention, the molecular index ellipsoid, which is essentially composed of the components of the two readily polarizable central units, may be positioned such that the optical axis is always situated in parallel to the layer normal z, making it possible to prevent the light, which propagates in a defined direction orthogonally to the layer normal through the liquid crystalline material, from undergoing a polarization modulation simultaneously with the phase modulation.
    • 具有层状结构的液晶材料可用于相位调制。 具有弧形或角二聚体分子的液晶,使得分子各自包括两个中心单元,并且两个中心单元的纵向轴线相对于层法线z呈现至少大致相反的倾斜角度。 通过配置根据本发明的二聚体分子的两个中心单元,基本上由两个易于极化的中心单元的组分组成的分子索引椭圆体可以被定位成使得光轴总是位于平行的位置 到正常的层z,使得可以防止在与正交通过液晶材料的层垂直的限定方向上传播的光在相位调制的同时进行偏振调制。
    • 25. 发明授权
    • Single-mode optical fiber
    • 单模光纤
    • US06529666B1
    • 2003-03-04
    • US09786386
    • 2001-03-02
    • Wolfgang DultzReiner BonessJoachim Vobian
    • Wolfgang DultzReiner BonessJoachim Vobian
    • G02B602
    • G02B6/0281G02B6/02228G02B6/03644
    • The present invention relates to an optical single-mode fiber having low dispersion for the wavelength division multiplex operation (WDM) of an optical transmission path, which is made of a central fiber core having the radius r1, two inner fiber cladding layers having the outer radius r2 and a, respectively, where a>r2, and an outer fiber cladding layer, the refractive index profile n(r) of the fiber not being constant as a function of the fiber radius r (triple-clad fiber). By properly selecting the profile form and the refractive index differences between the core layers and cladding layers, respectively, conventional fabrication methods can be used to manufacture a fiber having low dispersion within the wavelength range of about 1400 to 1700 nm and, thus, in the third optical window, fiber attenuation not being increased thereby.
    • 本发明涉及一种由具有半径r1的中心纤芯构成的光传输路径的波分复用操作(WDM),具有低色散的光单模光纤,两个内光纤覆层具有外层 半径r2和a,其中a> r2和外纤维包层,纤维的折射率分布n(r)作为纤维半径r(三包层光纤)的函数不恒定。 通过分别适当地选择轮廓形状和芯层和包覆层之间的折射率差,可以使用常规的制造方法来制造在约1400至1700nm的波长范围内具有低色散的光纤,因此在 第三光学窗口,纤维衰减不因此而增加。
    • 26. 发明授权
    • Interferometer and methods for compensation of dispersion or increase in spectral resolution of such an interferometer
    • 用于补偿这种干涉仪的色散或增加光谱分辨率的干涉仪和方法
    • US06249350B1
    • 2001-06-19
    • US09242005
    • 1999-12-09
    • Wolfgang DultzErna FrinsBernd HilsHeidrun Schmitzer
    • Wolfgang DultzErna FrinsBernd HilsHeidrun Schmitzer
    • G01B902
    • G01J3/453G01B9/02058G01B2290/70G01J3/02G01J3/0224
    • A double-beam interferometer for electromagnetic radiation and a method for the compensation of dispersion or increase in the spectral resolution of such an interferometer. Using a polarizer, which is brought into the optical radiation path, a defined polarization state P½0 is produced for the electromagnetic partial waves flowing into the arms of the interferometer. This polarization state is wavelength-independent and can vary for both partial beams. Optical elements modify the polarization state P½0 of the electromagnetic partial waves as a function of wavelength &lgr; and each spectral component &lgr;i is coded with a polarization P½ (&lgr;i). An analyzer, fitted to the output of the interferometer, transmits an adjustable polarization state Pdet, whereby an additional wavelength-dependent phase difference &ggr;(&lgr;) occurs between the partial waves of the spectral components. &ggr;(&lgr;) can be adjusted to obtain compensation of dispersion or an increase in the spectral resolution of the interferometer.
    • 用于电磁辐射的双光束干涉仪和用于补偿这种干涉仪的色散或增加光谱分辨率的方法。 使用入射到光学辐射路径中的偏振器,对于流入干涉仪的臂的电磁分波产生限定的偏振状态P 1/2。 该偏振状态是波长无关的,并且对于两个部分光束可以变化。 光学元件将电磁分波的偏振状态P 1/2作为波长的函数进行修改,并且以偏振P 1/2(兰德)编码每个光谱分量lambdi。 安装在干涉仪的输出端的分析仪透射可调极化状态Pdet,由此在光谱分量的部分波之间产生附加的波长相关的相位差γ(lambd)。 可以调整伽马(羔羊)以获得色散的补偿或干涉仪的光谱分辨率的增加。
    • 28. 发明申请
    • Method and device for attenuating light as a function of intensity
    • 用于衰减光强度的函数的方法和装置
    • US20070103758A1
    • 2007-05-10
    • US11438798
    • 2006-05-22
    • Wolfgang DultzLeonid BeresnevGalina Patrusheva
    • Wolfgang DultzLeonid BeresnevGalina Patrusheva
    • G02B26/00
    • G02B26/00G02B27/281
    • An intensity-dependent light modulating device or method for providing same, involves light successively passing through a polarizer, a first phase retardation plate and a first light modulator. The light then strikes a mirror and from there on, it passes once again through the light modulator and the phase retardation plate in the opposite direction and then strikes an analyzer that is crossed relative to the polarizer. The light modulator and the phase retardation plate are respectively located in an electric field in which the indicatrices of the light modulator and the phase retardation plate are deflected, wherein the deflection of the indicatrix of the light modulator is intensity-dependent. Due to the passage of light through the phase retardation plate and the light modulator, an intensity-dependent rotation of the direction of polarization occurs in such a way that higher intensity light is filtered in the analyzer while lower intensity light is transmitted. For example, a telescope is directed at an intensive light source in front of a dark background. The telescope only filters the intensive light source while the background can be simultaneously observed during almost the entire transmission.
    • 用于提供它的强度依赖性光调制装置或方法涉及连续通过偏振器,第一相位差板和第一光调制器的光。 光然后撞到镜子,从那里再次通过光调制器和相位延迟板在相反方向上,然后撞击相对于偏振器交叉的分析器。 光调制器和相位延迟板分别位于光调制器和相位延迟板的指示偏转的电场中,其中光调制器的指示符的偏转是强度依赖性的。 由于通过相位延迟板和光调制器的光通过,偏振方向的强度相关旋转以这样的方式发生,使得较高强度的光在分析仪中被滤波,同时传输较低强度的光。 例如,望远镜指向深色背景前的强光源。 望远镜只能过滤强光源,而在几乎整个传输过程中可以同时观察背景。
    • 29. 发明授权
    • Method and device for attenuating light as a function of intensity
    • 用于衰减光强度的函数的方法和装置
    • US07050213B2
    • 2006-05-23
    • US10479325
    • 2002-05-08
    • Wolfgang DultzLeonid BeresnevGalina Patrusheva
    • Wolfgang DultzLeonid BeresnevGalina Patrusheva
    • G02F1/03G02F1/07
    • G02B26/00G02B27/281
    • An intensity-dependent light modulating device involves a light successively passing through a polarizer, a first phase retardation plate and a first light modulator. The light then strikes a mirror and passes one again through the light modulator and the phase retardation plate in the opposite direction. The light then strikes an analyzer that is crossed relative to the polarizer. The light modulator and the phase retardation plate are respectively located in an electric field in which the indicatrices of the light modulator and the phase retardation plate are deflected, the deflection of the indicatrix of the light modulator being intensity-dependent. Due to the passage of light through the phase retardation plate and the light modulator, an intensity-dependent rotation of the direction of polarization occurs in such a way that higher intensity light is filtered in the analyzer while lower intensity light is transmitted.
    • 强度依赖性光调制装置包括依次通过偏振器,第一相位差板和第一光调制器的光。 然后光照射反射镜,并再次通过光调制器和相位延迟板在相反方向。 光然后撞击相对于偏振器交叉的分析器。 光调制器和相位延迟板分别位于光调制器和相位延迟板的指示偏转的电场中,光调制器的指示符的偏转是强度依赖性的。 由于通过相位延迟板和光调制器的光通过,偏振方向的强度相关旋转以这样的方式发生,使得较高强度的光在分析仪中被滤波,同时传输较低强度的光。