会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • METHOD FOR LASER-FREQUENCY LOCKING TO A FIBRE RESONATOR WITH INDUCE BIREFRINGENCE, METHOD OF INTERROGATION OF A STATIC AND/OR DYNAMIC STRAIN SENSOR MAKING USE OF SUCH A LOCKING METHOD, AND RELEVANT APPARATUSES
    • 用于激光频率锁定到具有诱发双极性的光纤谐振器的方法,静态和/或动态应变传感器的互连方法制造这种锁定方法的使用以及相关装置
    • WO2007138632A1
    • 2007-12-06
    • PCT/IT2007/000365
    • 2007-05-25
    • CONSIGLIO NAZIONALE DELLE RICERCHEGAGLIARDI, GianlucaFERRARO, PietroDE NATALE, PaoloDE NICOLA, Sergio
    • GAGLIARDI, GianlucaFERRARO, PietroDE NATALE, PaoloDE NICOLA, Sergio
    • G01D5/353G01L1/24H01S3/13H01S5/0687
    • G01D5/35303G01L1/246H01S3/1392H01S5/0687H01S5/12
    • The present invention concerns a method for laser-frequency locking to a fibre resonator with induced birefringence, comprising the use of a laser external to the fibre optical resonator with induced birefringence (RisF), characterised in that the reflected radiation by the fibre optical resonator with induced birefringence (RisF) is detected by means of a polarisation analyser (AP) and is used as reference signal for generating a correction signal which effectuates a feedback control of the laser. The invention further concerns a laser frequency-stabiliser apparatus, characterised in that it comprises a laser source, an optical fibre resonator with induced birefringence (RisF) and a fibre beam separator (FC) for the separation of the radiation incident in the cavity of the resonator from the reflected radiation, the reflected radiation being analysed by a polarisation analyser (AP) and then detected by at least a photodiode (PD-i, PD2), the detected radiation being used to obtain a correction signal that does a feedback control of the laser, so as to stabilise it. The invention also concerns a Method of interrogation of a sensor constituted by a fibre optical resonator with induced birefringence (RisF), characterised in that it uses a laser according to the above method of frequency locking according to the invention, and in that the correction signal which effectuates the feedback control of the laser is the monitoring signal of the state of the sensor (RisF). Finally the invention concerns an apparatus for the detection of static and dynamic strains, possibly due to temperature, comprising the components of the above stabilisation apparatus according to the invention, the optical resonator with induced birefringence (RisF) being used as sensor and the correction signal being detected and used as monitoring signal of the sensor.
    • 本发明涉及一种用于激光频率锁定到具有诱导双折射的光纤谐振器的方法,其包括使用具有诱导双折射(RisF)的光纤谐振器外部的激光器,其特征在于由光纤谐振器的反射辐射 通过偏振分析器(AP)检测感应双折射(RisF),并将其用作用于产生校正信号的参考信号,该校正信号实现激光的反馈控制。 本发明还涉及一种激光频率稳定器装置,其特征在于它包括激光源,具有诱导双折射(RisF)的光纤谐振器和用于分离入射在腔中的辐射的光纤分束器(FC) 谐振器,反射辐射由偏振分析器(AP)分析,然后由至少一个光电二极管(PD-i,PD2)检测,所检测的辐射被用于获得执行反馈控制的校正信号 激光,以稳定它。 本发明还涉及一种由具有诱导双折射(RisF)的光纤谐振器构成的传感器的询问方法,其特征在于,使用根据本发明的上述频率锁定方法的激光器,并且所述校正信号 这实现了激光器的反馈控制是传感器(RisF)状态的监控信号。 最后,本发明涉及一种用于检测可能由于温度而导致的静态和动态应变的装置,其包括根据本发明的上述稳定装置的部件,将具有诱导双折射(RisF)的光学谐振器用作传感器和校正信号 被检测并用作传感器的监控信号。
    • 4. 发明申请
    • HOLOGRAPHIC METHOD WITH NUMERICAL RECONSTRUCTION FOR OBTAINING AN IMAGE OF A THREE-DIMENSIONAL OBJECT IN WHICH EVEN POINTS OUT OF THE DEPTH OF FIELD ARE IN FOCUS, AND HOLOGRAPHIC APPARATUS USING SUCH A METHOD
    • 具有数值重建的全息图方法,用于获得三维对象的图像,其中任何点在现场的深度均为焦点,以及使用这种方法的全息设备
    • WO2006097956A2
    • 2006-09-21
    • PCT/IT2006000099
    • 2006-02-23
    • CONSIGLIO NAZIONALE RICERCHECOPPOLA GIUSEPPEDE NICOLA SERGIOFERRARO PIETROFINIZIO ANDREAGRILLI SIMONETTAJAVIDI BAHRAMPIERATTINI GIOVANNI
    • COPPOLA GIUSEPPEDE NICOLA SERGIOFERRARO PIETROFINIZIO ANDREAGRILLI SIMONETTAJAVIDI BAHRAMPIERATTINI GIOVANNI
    • G06T7/00G03H1/08
    • G03H1/0866G03H2001/005G03H2001/0883G03H2210/30Y10S359/90
    • The invention concerns a holographic method with numerical reconstruction for obtaining an image of a three-dimensional object, said method employing a digitalised hologram of an object or of a portion of an object, and comprising a step A. wherein, starting from the digitalised hologram, extracting an phase image of said object of portion of object, the image corresponding to a matrix MD of distance values, said distance values corresponding to distances from the image plane or to the depths relevant to said object or object portion; a step B. wherein a subassembly SD of the distance value assembly present in matrix MD of the method step A is selected, subassembly SD containing distance values d k , with k having a value between 1 and a whole number N SD >1', a step C. wherein for each distance value d k , extracting from matrix MD a iso-level assembly IQd k of corresponding bidimensional coordinate of said object or object portion; a step D. wherein for each distance value d k , reconstructing, starting from the digitalised hologram, a bidimensional matrix IMd k of intensity values relevant to said object or object portion; a step E. wherein, from each bidimensional matrix IMd k of the method step D, a bidimensional IFd k of intensity values is extracted corresponding to the bidimensional coordinates of the iso-level assembly IQd k extracted in method step C; a step F. wherein, starting from intensity values of said IFd k assemblies of the method phase E, from the coordinate bidimensional of the iso-level assembly IQd k and from the relevant distance values d k , for all values of k between 1 and N SD , reconstructing the three-dimensional intensity image of said object or object portion; resolution of bidimensional matrix IMd k for all values of k between 1 and N SD being identical to the resolution of matrix MD of distance value.
    • 本发明涉及一种用于获得三维物体的图像的数字重建的全息方法,所述方法采用物体或物体的一部分的数字化全息图,并且包括步骤A.其中,从数字化全息图开始 提取对象部分的所述对象的相位图像,对应于距离值的矩阵MD的图像,对应于距离图像平面的距离或与所述对象或对象部分相关的深度的所述距离值; 其中选择存在于方法步骤A的矩阵MD中的距离值组合的子组件SD,包含距离值d k k的子组件SD,其中k的值在1和整数之间 数字N > 1,步骤C.其中对于每个距离值d> k,从矩阵MD提取一个等级组件IQd SUB >所述对象或对象部分的相应二维坐标; 其中对于每个距离值d> k,从数字化全息图开始,重建与所述对象或对象部分相关的强度值的二维矩阵IMd≠k; 其中,根据方法步骤D的每个二维矩阵IMd≠K,对应于等值线的二维坐标提取强度值的二维IFd> k, 在方法步骤C中提取的水平组合IQd < 步骤F.其中,从方程阶段E的所述IFd k组件的强度值开始,从等级组件IQd&lt; k&gt; k&gt;的坐标二维和 对于1和N SD SD之间的所有k的值,相关距离值d N,重建所述对象或对象部分的三维强度图像; 对于1和N SD SD之间的k的所有值的二维矩阵的分辨率IMd&gt; k&lt;&lt;&lt;&gt;与距离值的矩阵MD的分辨率相同。