公开(公告)号：WO1995024621A1

公开(公告)日：1995-09-14

申请号：PCT/GB1994000454

申请日：1994-03-09

Applicant: THE SECRETARY OF STATE FOR DEFENCE ,  SUTTON, Philip ,  FRENCH, Herbert, Alan ,  SHAW, Andrew ,  WICKRAMASINGHE, Duleep

Inventor： THE SECRETARY OF STATE FOR DEFENCE

IPC: G01J09/02

CPC classification number: G01J9/02

Abstract: The invention concerns an optical detection system for coherence mapping of a field of view wherein the received light is separated into a plurality of pixels and interference means process, the light from each pixel as a function of path difference, to provide parameters characteristic of the coherence function for each pixel. A coherence image may be displayed. The interference means may comprise a Michelson interferometer with one stepped mirror, or an array of interference modules, such as Fabry Perot elements.

Abstract translation: 本发明涉及一种用于视场相干映射的光学检测系统，其中接收的光被分离成多个像素，并且干扰装置处理来自每个像素的光作为路径差的函数，以提供相干性参数 功能为每个像素。 可以显示相干图像。 干扰装置可以包括具有一个阶梯式反射镜的Michelson干涉仪或诸如法布里·珀罗元件的干涉模块阵列。

公开(公告)号：WO1993015383A1

公开(公告)日：1993-08-05

申请号：PCT/US1993000723

申请日：1993-01-27

Applicant: BROWN UNIVERSITY RESEARCH FOUNDATION

Inventor： BROWN UNIVERSITY RESEARCH FOUNDATION ,  MORSE, Theodore, F. ,  MENDEZ, Alexis

IPC: G01J09/02

CPC classification number: G01R15/24 ,  G01D5/268 ,  G01J1/56 ,  G02B26/001

Abstract: A method and apparatus for sensing electric and electromagnetic fields incorporating a transducer (30) which mounts directly on an optical fiber (20). The transducer (30) employs a conductive Fabry-Perot microcavity bounded by a conductive, thin and corrugated diaphragm (134). When the conductive microcavity is placed in an electric field, the electric field is excluded from within the equipotential microactivity and a net electrostatic force acts on the diaphragm. Likewise, when the conductive microcavity is exposed to an electromagnetic wave, the wave exerts a radiation pressure on the diaphragm. In both cases, the diaphragm (134) deflects linearly and uniformly under the influence of the extremely low electrostatic pressures which are induced. The diaphragm (134) deflection modulates the reflectance within the optical fiber (20) by varying the gap (f) of the cavity. The change in reflected light is measured and correlated to the field strength using an improved dual-wavelength referencing technique.

公开(公告)号：WO1989008825A1

公开(公告)日：1989-09-21

申请号：PCT/EP1989000255

申请日：1989-03-11

Applicant: TABARELLI, Werner ,  LÖBACH, Ernst ,  LEUCHS, Gerhard

Inventor： TABARELLI, Werner

IPC: G01J09/02

CPC classification number: G01J9/0246 ,  G01J2009/0207 ,  G01N21/45

Abstract: An arrangement for determining the wavelength of light beams in a medium or the refractive index of the medium comprises at least two stationary measuring bodies (11a, 11b, 11c) of different length each of which determines a different geometric path for two partial beams produced by a beam splitter. One partial beam (f2) of a pair of such partial beams travels along a path (d1, d2, d3) in the medium determined by the corresponding measuring body (11a, 11b or 11c). Two light beams of different frequency (f1, f2) are provided. One partial beam of each pair of partial beams is produced from the light beam of frequency (f1), and the other partial beam of each pair of partial beams is produced from the light beam of the other frequency (f2). A photoelectric detector (17) determines the phase relation of the interference fluctuations of each emergent light beam (15a-c) formed by recombination and superposition of the two partial beams of each pair of partial beams. This phase relation is an index of the difference in optical path of each partial beam of a pair of partial beams.

Abstract translation: 用于确定介质中的光束的波长或介质的折射率的装置包括至少两个不同长度的固定测量体（11a，11b，11c），每个固定测量体（11a，11b，11c）决定了由 分束器。 一对这样的部分光束的一个部分光束（f2）沿着由对应的测量体（11a，11b或11c）确定的介质中的路径（d1，d2，d3）行进。 提供不同频率（f1，f2）的两个光束。 从频率（f1）的光束产生每对分光束的一个部分光束，并且从另一个频率（f2）的光束产生每对部分光束的另一部分光束。 光电检测器（17）确定通过每对部分光束的两个部分光束的复合和叠加形成的每个出射光束（15a-c）的干涉波动的相位关系。 该相位关系是一对部分光束的每个局部光束的光程差的指标。

公开(公告)号：WO1997009594A1

公开(公告)日：1997-03-13

申请号：PCT/CH1996000275

申请日：1996-08-07

Applicant: PAUL SCHERRER INSTITUT ,  KUNZ, Rino, Ernst ,  DUEBENDORFER, Jürg

Inventor： PAUL SCHERRER INSTITUT

IPC: G01J09/02

CPC classification number: G01J9/00 ,  G01J3/0259 ,  G01J3/1804 ,  G01J3/1895

Abstract: A light beam (6) is applied to a waveguide (3) in order to measure properties of the beam (6), e.g. the wavelength. According to the invention, the waveguide (3) has locally and/or time-varying resonances, e.g. by suitably designed grid couplers (4, 5). A light signal (7) is thus generated in the waveguide (3) as a direct measurement of the property to be measured and can be further processed by suitable means or evaluated. It is thus possible, for example, advantageously to produce a simple and inexpensive spectrometer.

Abstract translation: 用于将光束（6）的特性的测量中，例如波长，波导（3）与该光束（6）被施加。 波导（3）根据本发明的本地和/或时间上变化的谐振条件，优选通过对适当培训的光栅（5 4）具有在这种情况下。 因此，作为属性的直接测量在波导（3），其通过合适的方法分别进一步处理被测量产生的光信号（7）。 进行评估。 因此，例如，有利地实现简单且廉价的光谱仪。

公开(公告)号：WO1996006335A1

公开(公告)日：1996-02-29

申请号：PCT/DE1995001130

申请日：1995-08-24

Applicant: NEWTON, William

IPC: G01J09/02

CPC classification number: G01J3/26 ,  G01J3/4531 ,  G01J9/0246

Abstract: A device for carrying out spectroscopic measurements based on the principle of interferometry has a matrix of photodetectors. A plurality of interferometers consist each of two partially transparent parallel mirrors arranged in a rectangular matrix so that the mirrors of as many interferometers as possible be mutually separated by different distances. As many different reflection phase positions as possible are thus obtained in the matrix for each measured wavelength. The different distances are distributed as uniformly as possible in a range between the smallest and largest distance. The matrix (9) of photodetectors is arranged behind the interferometers so that at least one photodetector be associated to each interferometer to receive the light (8a) to be measured that perpendicularly hits the interferometers. A device for converting the output signals of the matrix (9) of photodetectors is provided to represent the spectrum.

Abstract translation: 本发明涉及一种装置，用于执行基于干涉的与光检测器的一个基体中的原理的光谱测量。 设有多个干涉仪，每一个由两个部分透射光平行的反射镜，并且被布置成矩形阵列，以使反射镜尽可能所有的干涉仪的具有彼此不同的距离，使得能够用于待测量的任何波长 许多不同的反射相位的位置可以被报告在基质中，并且，在最小和最大间隔之间的范围内的不同的距离被均匀地分布成为可能，并且所述干涉仪之后的矩阵（9）的光检测器被布置成使得每个干涉仪的至少一个 光电检测器，用于接收所述待测量的，垂直入射在干涉仪中，光（7A）被分配，并且用于表示所述光谱转化（9）由光电检测器提供的矩阵的输出信号的装置。

公开(公告)号：WO1993023726A1

公开(公告)日：1993-11-25

申请号：PCT/US1993004381

申请日：1993-05-07

Applicant: HONEYWELL, INC.

Inventor： HONEYWELL, INC. ,  MOCKER, Hans, W. ,  WAGENER, Thomas, J.

IPC: G01J09/02

CPC classification number: G01S17/58 ,  G01P3/36 ,  G01S7/4812 ,  G01S7/484 ,  G01S7/4917

Abstract: A solid-block homodyne Doppler interferometer utilizing continuous-wave or pulse-wave light beam technology. The invention eliminates the need for individually supported mirrors and beamsplitters. In lieu of such beamsplitters, a glass prism block is used having two 90 degree prisms and an etalon.

Abstract translation: 利用连续波或脉冲波光束技术的固体块差分多普勒干涉仪。 本发明消除了对单独支撑的反射镜和分束器的需要。 代替这种分束器，使用具有两个90度棱镜和标准具的玻璃棱镜块。

公开(公告)号：WO1989001612A1

公开(公告)日：1989-02-23

申请号：PCT/GB1988000628

申请日：1988-07-29

Applicant: RENISHAW PLC ,  CHANEY, Raymond, John

Inventor： RENISHAW PLC

IPC: G01J09/02

CPC classification number: G01J1/4204 ,  G01J1/4228 ,  G01J3/0262 ,  G01J4/00 ,  G01J9/02

Abstract: In a optical detection system a plurality of photo-diode detectors are placed in an enclosure. The enclosure has an aperture through which is directed a light beam to be analysed. To eliminate the effect which ambient light entering the aperture would have one the detector signals, each of the detectors are arranged to be at equal distances from the aperture so that they all have the same acceptance cone angle for the light entering the aperture. Thus the ratio of signal to ambient light in the portion of the light beam reaching each detector is the same and the d.c. component of the signal produced by the detector can be easily removed in the signal conditioning electronics. The equal spacing of the detectors from the aperture is achieved in accordance with the invention by using beam splitters in the path of the beam to deflect portions of the beam to detectors which are offset from the beam axis.

Abstract translation: 在光学检测系统中，多个光电二极管检测器被放置在外壳中。 外壳具有孔，通过该孔指向待分析的光束。 为了消除进入孔径的环境光将具有一个检测器信号的效果，每个检测器布置成距离孔的距离相等，使得它们对于进入孔的光具有相同的接受锥角。 因此，到达每个检测器的光束的部分中的信号与环境光的比率是相同的，并且d.c. 可以在信号调理电子设备中容易地去除由检测器产生的信号的分量。 根据本发明，通过在光束的路径中使用分束器将光束的部分偏转到与光束轴线偏移的检测器，从而实现了与孔径相等的检测器的间隔。

公开(公告)号：WO1988001730A1

公开(公告)日：1988-03-10

申请号：PCT/AU1987000292

申请日：1987-08-27

Applicant: THE AUSTRALIAN NATIONAL UNIVERSITY ,  STOILOVIC, Milutin ,  WARRENER, Ronald, Norman

Inventor： THE AUSTRALIAN NATIONAL UNIVERSITY

IPC: G01J09/02

CPC classification number: G06K7/10831 ,  A61B5/1172 ,  G01J2003/1239 ,  G01J2003/1243 ,  G01N21/645 ,  G01N2021/6417 ,  G01N2021/6439 ,  G06K7/10702 ,  G06K7/12

Abstract: In forensic science it may be necessary to distinguish between two photoluminescent sources which emit radiation at similar, but different, wavelengths, or to distinguish between reflected light from surface regions which reflect light at different characteristic wavelengths. Examples of such sources or surfaces are inks on documents and treated latent fingerprints. The prior art technique for distinguishing such sources or regions involves the systematic use of a large number of narrow band pass interference filters. The present invention uses a single interference filter (17, 14) which is tilted to alter the wavelength of the peak radiation transmitted by the filter. If photoluminescent sources are to be distinguished, the filter may be placed between the sources and a monitor (10) of their emitted radiation, or between an illumination lamp (13) and the sources. An angle of tilt of the filter is selected so that radiation from at least one source is rejected while the intensity of radiation from a wanted source is optimised. If a reflecting surface is to be distinguished, the tiltable filter (14) is positioned between an illumination lamp (13) and the surfaces and an angle of tilt is found so that the illuminating light has a wavelength equal to the characteristic reflecting wavelength of an unwanted surface, so that, to an observer, the unwanted surface merges with the background.

Abstract translation: 在法医科学中，可能需要区分发射相似但不同波长的辐射的两个光致发光源，或者区分来自反射不同特征波长的光的表面区域的反射光。 这些来源或表面的例子是在文件和处理的潜在指纹上的油墨。 用于区分这样的源或区域的现有技术涉及大量窄带通干涉滤波器的系统使用。 本发明使用倾斜以改变由过滤器传输的峰值辐射的波长的单个干涉滤光器（17,14）。 如果要区分光致发光源，则可以将滤光器放置在源和其发射的辐射的监视器（10）之间，或者在照明灯（13）和源之间。 选择滤光器的倾斜角度，使得来自至少一个光源的辐射被拒绝，同时来自所需光源的辐射强度被优化。 如果要区分反射表面，则可倾斜滤光器（14）位于照明灯（13）和表面之间，并且发现倾斜角度，使得照明光的波长等于 不想要的表面，使得对于观察者，不需要的表面与背景融合。

公开(公告)号：WO1998005933A1

公开(公告)日：1998-02-12

申请号：PCT/EP1997004189

申请日：1997-08-01

Applicant: DEUTSCHE TELEKOM AG ,  DULTZ, Wolfgang ,  FRINS, Erna ,  HILS, Bernd ,  SCHMITZER, Heidrun

Inventor： DEUTSCHE TELEKOM AG

IPC: G01J09/02

CPC classification number: G01J3/453 ,  G01B9/02058 ,  G01B2290/70 ,  G01J3/02 ,  G01J3/0224

Abstract: The invention concerns a double-beam interferometer (1) for electromagnetic radiation and a method for the compensation of dispersion or increase in the spectral resolution of such an interferometer. Using a polarizer (8), which is brought into the optical radiation path, a defined polarization state P1/2 is produced for the electromagnetic partial waves flowing into the arms of the interferometer. This polarization state is wavelenght-independent and can vary for both partial beams. Optical elements (11, 12) modify the polarization state P1/2 of the electromagnetic partial waves as a function of wave-length lambda and each spectral component lambda i is coded with a polarization P1/2 ( lambda i). An analyzer (9), fitted to the output of the interferometer, transmits an adjustable polarization state Pdet, whereby an additional wavelength-dependent phase difference gamma ( lambda ) occurs between the partial waves of the spectral components. gamma ( lambda ) can be adjusted to obtain compensation of dispersion or an increase in the spectral resolution of the interferometer.

Abstract translation: 本发明涉及用于电磁辐射和用于分散的或提高这样的干涉仪的光谱分辨率补偿方法的双光束干涉仪（1）。 通过的在偏振器（8）的光束路径中引入装置是定义极化状态P1 / 2 <0>在干涉仪的电磁分波由输入的，所述偏振状态是与波长无关的，并且可以是对于两个分光束不同。 通过偏振状态的光学元件（11，12）是P1 / 2 <0>作为波长为λ的函数的电磁分波的变化和编码具有偏振P1 / 2（拉姆达I）I每个谱分量的λ。 布置在所述分析器（9）一种干涉仪离开通过一个可调偏振状态P DET，由此在频谱分量的分波之间形成的附加波长依赖性相位差伽马（拉姆达）。 伽马（拉姆达）是可调节的，使得分散补偿或干涉仪的光谱分辨率增加。

公开(公告)号：WO1995020144A1

公开(公告)日：1995-07-27

申请号：PCT/GB1995000094

申请日：1995-01-19

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  PRATT, David, John

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: G01J09/02

CPC classification number: G01J9/0246 ,  H01S5/0687

Abstract: An optical wavelength sensor consists of a wedge shaped Fabry Perot etalon (4) which exhibits resonance for different optical wavelengths across its width (X), and an array of detectors xn that detects the spatial disposition of resonant peaks which occur in the etalon, for comparison with stored peak patterns in a processor (6), so as to determine the spectral content of the incident light from an optical fibre (2).

Abstract translation: 光学波长传感器由楔形法布里珀罗标准具（4）组成，其对于其宽度（X）上的不同光学波长表现出共振，以及检测器xn的阵列，其检测出现在标准具中的共振峰的空间布置，用于 与处理器（6）中存储的峰值图案进行比较，以便确定来自光纤（2）的入射光的光谱含量。