公开(公告)号：WO2010040180A1

公开(公告)日：2010-04-15

申请号：PCT/AU2009001332

申请日：2009-10-09

Applicant: OPAL PRODUCERS AUSTRALIA LTD ,  HORNABROOK GRAHAM ALFRED ,  MARCHANT STUART NORMAN ,  LUMMIS RODNEY HERBERT ,  PRIMMER KATHRYN ELIZABETH ,  HORNABROOK ANGUS NELSON ,  SUTTON PETER BRUCE ,  IMRIE ROBERT GEORGE ,  BISCHOF LEANNE ,  LAGERSTROM RYAN ,  HILSENSTEIN VOLKER

Inventor： HORNABROOK GRAHAM ALFRED ,  MARCHANT STUART NORMAN ,  LUMMIS RODNEY HERBERT ,  PRIMMER KATHRYN ELIZABETH ,  HORNABROOK ANGUS NELSON ,  SUTTON PETER BRUCE ,  IMRIE ROBERT GEORGE ,  BISCHOF LEANNE ,  LAGERSTROM RYAN ,  HILSENSTEIN VOLKER

IPC: G01N21/87

CPC classification number: G01N21/87 ,  G01J3/463 ,  G01J4/00 ,  G01J5/08 ,  G01N33/381 ,  G01N2223/05 ,  G06K9/4652 ,  G06K9/4661

Abstract: An apparatus (10) for assessment, evaluation and grading of gemstones has a stage (11) upon which a gemstone may be supported. The stage is enclosed in a housing (15) that is impervious to light. There is at least one light source (14) located in the housing which is adapted to project incident light onto the gemstone. Means for rotating and tilting the stage so as to vary the orientation of the gemstone to the incident light are also present. A digital camera (16) is located in the housing adjacent the or each light source and is adapted to take images of the gemstone based on reflection and/or refraction of the incident light. The apparatus also includes information processing means for calibrating and analysing the images. The information processing means is programmed with instruction sets for assessing one or more of colour, cut, clarity, scintillation, brilliance, lustre, dispersion and sheen. The gemstone is supported upon the stage by securing means (17) engaging the gemstone at its bottom surface.

Abstract translation: 用于宝石评估，评估和分级的装置（10）具有阶段（11），可以支撑宝石。 舞台被封闭在不透光的外壳（15）中。 至少一个光源（14）位于壳体中，其适于将入射光投射到宝石上。 还存在用于使台架旋转和倾斜以改变宝石与入射光的取向的装置。 数码相机（16）位于与所述或每个光源相邻的壳体中，并且适于基于入射光的反射和/或折射来拍摄宝石的图像。 该装置还包括用于校准和分析图像的信息处理装置。 信息处理装置被编程为用于评估颜色，切割，清晰度，闪烁，亮度，光泽，色散和光泽中的一种或多种的指令集。 宝石通过在其底部表面接合宝石的固定装置（17）被支撑在舞台上。

公开(公告)号：WO2008147575A3

公开(公告)日：2009-04-16

申请号：PCT/US2008050926

申请日：2008-01-11

Applicant: RENSSELAER POLYTECH INST ,  SCHULKIN BRIAN ,  ZHANG XI-CHENG ,  TONGUE THOMAS ,  XU JINGZHOU ,  CHEN JIAN

Inventor： SCHULKIN BRIAN ,  ZHANG XI-CHENG ,  TONGUE THOMAS ,  XU JINGZHOU ,  CHEN JIAN

IPC: G01J4/00

CPC classification number: G21K5/00 ,  B33Y80/00 ,  G01J4/00 ,  G01N21/211 ,  G01N21/3581 ,  H01S5/02236 ,  H01S2302/02

Abstract: Methods and apparatus (10, 20, 25, 60, 70) for detecting variations in electromagnetic fields, in particular, terahertz (THz) electromagnetic fields, are provided. The methods and apparatus employ polarization detection devices (120) and controllers (224) to maintain or vary the polarization of modulated signals (212, 262) as desired. The methods and apparatus are provided to characterize electromagnetic fields by directing the electromagnetic field (204, 254) and a probe beam (206, 252) upon an electro-crystal (202, 256) and detecting the modulation of the resulting probe beam (212, 262). Detection of the modulation of the probe beam (212, 262) is practiced by detecting and comparing the polarization components (216, 218, 266, 268) of the modulated probe beam (212, 262). Aspects of the invention may be used to analyze or detect explosives, explosive related compounds, and pharmaceuticals, among other substances. A compact apparatus (10), modular optical devices (20, 25, 60, 70) for use with the apparatus, sample holders (400, 402, 500), and radiation source mounts (600, 650, 700) are also disclosed.

Abstract translation: 提供了用于检测电磁场特别是太赫兹（THz）电磁场的变化的方法和装置（10,20,25,60,70）。 所述方法和装置使用偏振检测装置（120）和控制器（224）来根据需要维持或改变调制信号（212,262）的极化。 提供的方法和装置通过将电磁场（204,254）和探针光束（206,252）引导到电晶体（202,256）上并检测所得到的探针光束（212）的调制来表征电磁场 ，262）。 通过检测和比较调制探测光束（212,262）的偏振分量（216,218,266,268）来实现探测光束（212,262）的调制的检测。 本发明的方面可用于分析或检测爆炸物，爆炸性相关化合物和药物等物质。 还公开了一种紧凑装置（10），用于与装置一起使用的模块化光学装置（20,25,60,70），样品保持器（400,402,500）和辐射源安装件（600,650,700）。

公开(公告)号：WO2007087670A1

公开(公告)日：2007-08-09

申请号：PCT/AU2007/000079

申请日：2007-01-30

Applicant: ENDEAVOUR INSTRUMENTS PTY. LTD. ,  LING, William Pui

Inventor： LING, William Pui

IPC: G02F1/01 ,  G01J4/00 ,  G02F1/00

CPC classification number: G01J4/00 ,  G02F1/0131

Abstract: A photoelastic modulator, comprising a driving block and a driver transducer for perturbing said block in a predefined direction to establish a standing wave extending longitudinally in said block and hence perpendicularly to said predefined direction. The transducer is affixed to said block at two regions of the transducer mutually displaced in said predefined direction, to minimise the coupling of lateral perturbation perpendicular to the predefined direction. A recess or gap may be provided under the transducer.

Abstract translation: 一种光弹性调制器，包括驱动块和用于在预定方向上扰动所述块的驱动器换能器，以建立在所述块中纵向延伸并因此垂直于所述预定方向延伸的驻波。 传感器在所述传感器的两个区域处被固定到所述传感器，所述两个区域在所述预定方向上相互位移，以使垂直于所述预定方向的横向扰动的耦合最小化。 可以在换能器下面设置凹部或间隙。

公开(公告)号：WO2007061460A2

公开(公告)日：2007-05-31

申请号：PCT/US2006029668

申请日：2006-07-30

Applicant: J A WOOLLAM CO INC

IPC: G01J4/00

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/021 ,  G01J3/0229 ,  G01J3/0243 ,  G01J4/00 ,  G01N21/21 ,  G01N21/211 ,  G01N2021/213 ,  G02B17/008

Abstract: Low aberration relay systems modified to perform as spatial filters in reflectometer, spectrophotometer, ellipsometer, polarimeter and the like systems.

Abstract translation: 低像差继电器系统被修改为在反射计，分光光度计，椭偏仪，偏振计等系统中用作空间滤光片。

公开(公告)号：WO2006072762A1

公开(公告)日：2006-07-13

申请号：PCT/GB2005/004938

申请日：2005-12-19

Applicant: ISIS INNOVATION LIMITED ,  JOHNSTON, Michael, Benjamin

Inventor： JOHNSTON, Michael, Benjamin

IPC: G01N21/35 ,  G01J5/10

CPC classification number: G01J3/42 ,  G01J1/42 ,  G01J4/00 ,  G01N21/21 ,  G01N21/3586

Abstract: A three terminal photoconductive switch or gate used to detect terahertz radiation. Three metallic terminals are disposed on a gallium arsenide photoconductive substrate, with the terminals being arranged such that a first pair measures an electric field in one direction and a second pair measures an electric field in an preferably orthogonal direction. The device is illuminated by a gating laser pulse which creates charge carriers in the photoconductive substrate, these charges carriers being redistributed on the application of electromagnetic radiation to be detected. The signals across the two pairs of terminals are representative of the time dependent electric field strength in two preferably orthogonal directions and the detector is thus useful for detecting elliptically or circularly polarised electromagnetic radiation. The detector is particularly suitable for detecting terahertz radiation and may be used in time domain spectroscopy and other terahertz applications.

Abstract translation: 用于检测太赫兹辐射的三端光电开关或栅极。 三个金属端子设置在砷化镓光电导基板上，端子被布置为使得第一对测量一个方向的电场，而第二对测量在优选正交的方向上的电场。 该器件由在光电导衬底中产生电荷载流子的选通激光脉冲照亮，这些电荷载体在施加要检测的电磁辐射时重新分布。 两对端子之间的信号表示两个优选正交方向上的时间依赖电场强度，因此检测器可用于检测椭圆或圆极化的电磁辐射。 检测器特别适用于检测太赫兹辐射，可用于时域光谱学和其他太赫兹应用。

公开(公告)号：WO0165236A9

公开(公告)日：2003-02-20

申请号：PCT/US0140240

申请日：2001-03-01

Applicant: VISIDYNE INC

Inventor： STAIR ALVA TAYLOR ,  JOSS PAUL CHRISTOPHER

IPC: G01J4/00 ,  G01N21/21 ,  G01N21/35 ,  G01N21/53

CPC classification number: G01N21/21 ,  G01J4/00 ,  G01N21/3554 ,  G01N21/359 ,  G01N21/538

Abstract: A method for determining the composition of a target includes the steps of sensing radiation in the short wave infrared range scattered by the target area (50), measuring the polarization of the sensed radiation (52), and determining, from the polarization of the sensed radiation, the presence of at least one of water and ice particles in the target area (60).

Abstract translation: 用于确定目标的组成的方法包括以下步骤：感测由目标区域（50）散射的短波红外范围中的辐射，测量感测辐射（52）的极化，以及根据感测到的偏振 在目标区域（60）中存在水和冰颗粒中的至少一种的辐射。

公开(公告)号：WO02054028A3

公开(公告)日：2002-12-05

申请号：PCT/US0149624

申请日：2001-12-28

Applicant: FIBERCONTROL

Inventor： EVANKOW JOSEPH DAVID JR ,  COLLETT EDWARD

IPC: G01J4/00

CPC classification number: G01J4/00

Abstract: Apparatus (1200, 1300) and accompanying methods to visualize and calculate, by direct visual measurement and interpolation, polarized light, in the form of sphere (observable polarization sphere - OPS) along with its associated spherical coordinate system consisting of latitudes and longitudes, which maps transformation of the state(s) of polarization (SOP) of an optical beam that propagates through either a single optical device (generally a "media") or a series of optical devices (mediums), e.g., phase shifters (waveplates, compensators), attenuators (polarizers), and field rotators. The OPS can be used to calculate and display phase shifting of the polarization state of an optical beam as it propagates through each such polarizing media, traversing along latitudinal small circles on the prime meridian, with the elevation angle & being a measure of intensity ratio of the orthogonal components of the beam and the azimuth angle being phase angle.

Abstract translation: 装置（1200,1300）以及通过直接视觉测量和内插来以球体（可观察极化球 - OPS）的形式来显示和计算偏振光的装置（1200,1300）及其相关的由纬度和经度组成的球面坐标系， 映射通过单个光学器件（通常为“介质”）或一系列光学器件（介质）传播的光束的偏振状态（SOP）的变换，例如移相器（波片，补偿器 ），衰减器（偏振器）和场旋转器。 OPS可以用于计算和显示光束的偏振状态的相移，因为它们通过每个这样的偏振介质传播，沿着主子午线上的纬度小圆遍历，仰角是强度比的度量 光束的正交分量和方位角是相位角。

公开(公告)号：WO02019016A1

公开(公告)日：2002-03-07

申请号：PCT/US2001/026908

申请日：2001-08-30

IPC: G01J1/26 ,  G01J4/00 ,  G02F1/01 ,  H04B10/18 ,  G02F1/00 ,  G01J1/20 ,  G02F1/07

CPC classification number: H04B10/2572 ,  G01J1/26 ,  G01J4/00 ,  G02F1/0136 ,  Y10S372/703

Abstract: The invention is an instrument for sensing the state of polarization (SOP), and for transforming the SOP of a beam of light from an incident continuously-varying arbitrary SOP to a desired exit SOP, using a polarization compensator (71) under feedback control (73). A polarization sensor (72) uses two or three samples (35a,35b,35c) of a beam to sense the Poincare sphere latitude and longitude error in SOP. A polarization controller adjusts the SOP of light, which is then sensed by the polarization sensor, which develops signals to drive the polarization compensator using feedback methods. Unlike prior-art systems, the feedback seeks a mid-point rather than an extremum in the sensed signals, so there is no sign ambiguity in the feedback control. Further, the sensor signals indicate orthogonal displacements in SOP that correspond to specific elements in the polarization controller, so there is no ambiguity as to which element needs adjustment in order to correct a given error in SOP. The result is a high-performance instrument with high-speed response to changes in the SOP of the incident beam, and very low error in the exit SOP.

Abstract translation: 本发明是一种用于感测偏振状态（SOP）的装置，并且用于使用反馈控制下的偏振补偿器（71）将来自入射连续变化的任意SOP的光束的SOP变换为期望的出射SOP 73）。 偏振传感器（72）使用光束的两个或三个采样（35a，35b，35c）来感测SOP中庞加莱球的纬度和经度误差。 偏振控制器调节光的SOP，然后由偏振传感器感测到光的SOP，其利用反馈方法产生信号以驱动偏振补偿器。 与现有技术系统不同，反馈寻找感测信号中的中点而不是极值，因此反馈控制中没有符号模糊。 此外，传感器信号表示与偏振控制器中的特定元件相对应的SOP中的正交位移，因此对于哪个元件需要调整以便校正SOP中的给定误差，没有歧义。 其结果是对入射光束的SOP变化具有高速响应的高性能仪器，以及出口SOP的误差非常低。

公开(公告)号：WO01081949A2

公开(公告)日：2001-11-01

申请号：PCT/US2001/013489

申请日：2001-04-26

IPC: G01J3/02 ,  G01J3/04 ,  G01J3/28 ,  G01J3/36 ,  G01J3/447 ,  G01J4/00 ,  G01J9/00 ,  G01J11/00 ,  G01N21/21 ,  G01N21/31 ,  G01N21/64 ,  G01S7/481 ,  G01S17/89 ,  G04F13/02 ,  G01S17/00

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0229 ,  G01J3/0256 ,  G01J3/0294 ,  G01J3/04 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/2889 ,  G01J3/36 ,  G01J3/447 ,  G01J4/00 ,  G01J9/00 ,  G01J11/00 ,  G01N21/21 ,  G01N21/31 ,  G01N21/6408 ,  G01N21/6456 ,  G01N2021/1793 ,  G01N2021/6417 ,  G01N2021/6423 ,  G01S7/481 ,  G01S7/4817 ,  G01S17/89 ,  G04F13/02 ,  G04F13/026 ,  H01J43/00

Abstract: Plural electronic or optical images are provided in a streak optical system, as for instance by use of plural slits instead of the conventional single slit, to obtain a third, fourth, etc. dimension - rather than only the conventional two, namely range or time and azimuth. Such additional dimension or dimensions are thereby incorporated into the optical information that is to be streaked and thereby time resolved. The added dimensions may take any of an extremely broad range of forms, including wavelength, polarization state, or one or more spatial dimensions - or indeed virtually any optical parameter that can be impressed upon a probe beam. Resulting capabilities remarkably include several new forms of lidar spectroscopy, fluorescence analysis, polarimetry, spectropolarimetry, and combinations of these, as well as a gigahertz wavefront sensor.

Abstract translation: 在条纹光学系统中提供多个电子或光学图像，例如通过使用多个狭缝而不是传统的单个狭缝来获得第三，第四等尺寸，而不是仅仅是传统的两个，即范围或时间 和方位角。 因此，这样的附加尺寸或尺寸被并入要划线的光学信息中，从而被时间分辨。 增加的尺寸可以采用非常宽的范围的范围，包括波长，偏振状态或一个或多个空间维度，或实际上实际上可以施加到探测光束上的任何光学参数。 所产生的功能显着地包括激光雷达光谱，荧光分析，偏振测量，分光偏振测量及其组合的几种新形式，以及千兆赫兹波前传感器。

公开(公告)号：WO99030119A1

公开(公告)日：1999-06-17

申请号：PCT/US1998/026157

申请日：1998-12-09

IPC: G01B11/06 ,  G01J3/02 ,  G01J3/12 ,  G01J3/42 ,  G01J3/45 ,  G01J4/00 ,  G01N21/27 ,  G01N21/45

CPC classification number: G01J3/12 ,  G01B11/0625 ,  G01B11/0641 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/42 ,  G01J4/00

Abstract: An apparatus uses reflectance spectrophotometry to characterize a sample (16) having any number of thin films. The apparatus uses two toroidal mirrors (33, 34) in an optical relay to direct light reflected by the sample (16) to a spectrophotometer (26). A computer then analyzes the reflected spectrum to characterize the optical properties of the sample (16). The optical relay allows a range of angles of reflection from the sample (16), and has no chromatic aberration. The optical relay is also arranged so that the non-chromatic aberration is minimized. The sample (16) is mounted on a movable stage (14) so that different areas of the sample (16) may be characterized. Furthermore, a deflector (24) and a viewer (28) are used to allow the operator of the apparatus to view the region of the sample (16) under study.

Abstract translation: 一种装置使用反射分光光度法来表征具有任何数量薄膜的样品（16）。 该装置使用光学继电器中的两个环形反射镜（33,34）将由样品（16）反射的光引导到分光光度计（26）。 然后计算机分析反射光谱以表征样品（16）的光学性质。 光学继电器允许来自样品（16）的一定范围的反射角度，并且不具有色差。 光学继电器也被布置成使得非色差最小化。 样品（16）安装在可移动台（14）上，使得样品（16）的不同区域可以被表征。 此外，偏转器（24）和观察器（28）用于允许装置的操作者观察正在研究的样品（16）的区域。