BIREFRINGENT OPTICAL TEMPERATURE SENSOR AND METHOD
    12.
    发明申请
    BIREFRINGENT OPTICAL TEMPERATURE SENSOR AND METHOD 审中-公开
    双重光学温度传感器和方法

    公开(公告)号:WO2006058423A1

    公开(公告)日:2006-06-08

    申请号:PCT/CA2005/001815

    申请日:2005-11-30

    Abstract: The invention concerns a tandem interferometer for temperature sensing. The low coherence interferometry (LCI) system comprises a polarization-based sensing interferometer comprising a birefringent crystal having a sensor temperature sensitivity and a birefringence dispersion, and a readout interferometer being either a Fizeau interferometer using an optical wedge or a polarization interferometer using a birefringent wedge. In one embodiment of the invention, the birefringent crystal has dispersion properties similar to that of the birefringent wedge or that of the optical wedge of the readout interferometer. The present invention also provides a signal processing method for correcting the dispersion effect and for noise filtering in LCI-based optical sensors of the tandem interferometer arrangement.

    Abstract translation: 本发明涉及用于温度感测的串联干涉仪。 低相干干涉测量(LCI)系统包括基于偏振的感测干涉仪,其包括具有传感器温度灵敏度和双折射色散的双折射晶体,以及使用光楔的Fizeau干涉仪或使用双折射楔的偏振干涉仪的读出干涉仪 。 在本发明的一个实施例中,双折射晶体具有与双折射楔形或者读出干涉仪的光楔的分散特性相似的分散特性。 本发明还提供一种用于校正串联干涉仪装置的基于LCI的光学传感器中的色散效应和噪声滤波的信号处理方法。

    Pyroelectric and other infrared detection devices with thin films
    16.
    发明公开
    Pyroelectric and other infrared detection devices with thin films 失效
    Pyroelektrische und andere Infrarot-Messvorrichtungen mittelsdünnerSchichten。

    公开(公告)号:EP0417845A1

    公开(公告)日:1991-03-20

    申请号:EP90202379.5

    申请日:1990-09-07

    CPC classification number: H01L37/02 G01J5/10 G01J5/34 G01J5/58 G01J2005/586

    Abstract: An infrared detection device, e.g. for the 8 to 14 micrometre waveband, comprises a Langmuir-Blodgett or other very thin film (10) having pyroelectric or other temperature-dependent characteristics. At least one detector element having opposite electrical conductors (21 and 22) is formed in the film (10). The film (10) which may have a support layer (15) is mostly free of contact with a mount arrangement (25) which supports the film (10) in a very low thermally-conductive manner. In accordance with the present invention, the film (10) is very thin, but very efficient absorption of the radiation (31) is obtained in the following manner: the facing surface (26) of the mount arrangement (25) is reflective for the radiation (31); the sum of the optical thicknesses (n.t) of the film (10), (N.T) of any support layer (15) and (d) of a gap (28) forming the multiple layer detector-element structure along the radiation path to the reflector (26) is approximately one quarter of a selected wavelength (e.g. 9.6 micrometres) in the range to be detected; and the conductors (21 and 22) each comprise a resistive layer providing a sufficient resistance per square (Z1 and Z2, e.g. of twice the characteristic impedance of free space) as to absorb a substantial proportion of the incident radiation (31) and reflected radiation (32) in the wavelength range. Spaced supporting elements (252) below the film (10) can support the film (10) over the reflector (26) with a well-defined small gap (28) and carry an electrical connection to the second conductor(s) (22) below the film.

    Abstract translation: 红外线检测装置,例如 对于8至14微米波段,包括具有热电或其它温度依赖特性的Langmuir-Blodgett或其它非常薄的薄膜(10)。 至少一个具有相对电导体(21和22)的检测器元件形成在膜(10)中。 可以具有支撑层(15)的膜(10)大体上不与以非常低的导热方式支撑膜(10)的安装装置(25)接触。 根据本发明,膜(10)非常薄,但是以如下方式获得辐射(31)的非常有效的吸收:安装装置(25)的相对表面(26)对于 辐射(31); 沿着辐射路径形成多层检测元件结构的间隙(28)的任何支撑层(15)和(d)的膜(10)的光学厚度(nt)和(d)的和, 在待检测的范围内,反射器(26)约为所选波长(例如9.6微米)的四分之一左右; 并且导体(21和22)各自包括电阻层,其每平方(Z1和Z2,例如,自由空间的特征阻抗的两倍)提供足够的电阻,以吸收相当大比例的入射辐射(31)和反射辐射 (32)在波长范围内。 薄膜(10)下面的间隔的支撑元件(252)可以用良好限定的小间隙(28)支撑反射器(26)上的薄膜(10)并且携带与第二导体(22)的电连接, 在电影下面

    Method and device for estimating the temperature of a black body radiator

    公开(公告)号:JP2005505774A

    公开(公告)日:2005-02-24

    申请号:JP2003536696

    申请日:2002-10-18

    Abstract: 灰色体または黒体放射体の温度の遠隔検知は、その放射線(24)を変調された赤外フィルター分光計を通すことによって行われる。 該赤外フィルターは、順次、帯域通過フィルター20、放射線を偏光させる第1の偏光子(21)、偏光された放射線を2つの直交する偏光成分に分裂させる電気光学エレメント(22)を含む。 レンズ(28)は第2の偏光子を去る放射線をディテクター(27)にイメージする。 ディテクター27からの電気信号は数値アナライザーに入力される。 典型的には、複屈折性結晶アセンブリ(25)および複屈折性トリムプレート(26)を含む電気光学エレメントは、直交する偏光成分が、再度合成された成分がそれらのインターフェログラム中のピークまたはトラフにおける、またはその近くにあるように、直交する偏光成分の正味の遅れがそのようになるように配置される。 正弦的に変化する電圧が電気光学エレメントに印加されて、電気光学エレメントを通過した成分の正味の遅れを変調させる。 数値アナライザーは、ディテクター(27)からそれを受領する信号の高調波振幅比(変調電圧の周波数の基本波および第2高調波における信号振幅の比率)を計算するようにプログラムされる。 高調波振幅比は、キャリブレーション検索表を参照して見積もることができる放射体の温度の関数である。

    Method and apparatus for measuring temperature of sheet steel
    18.
    发明专利
    Method and apparatus for measuring temperature of sheet steel 审中-公开
    测量钢板温度的方法和装置

    公开(公告)号:JP2007010476A

    公开(公告)日:2007-01-18

    申请号:JP2005191494

    申请日:2005-06-30

    Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring the temperature of sheet steel suitable for performing online and continuous measurements on the surface temperature of sheet steel heat-treated in an annealing furnace.
    SOLUTION: A heat-resisting material having a high emissivity in the infrared wavelength region is embedded in part of a furnace wall of the heating furnace. Radiances of a plurality of wavelengths in directions of regular reflection of radiant light from the heat-resisting material at the surface of the sheet steel are measured in each of a plurality of polarization angle components. The emissivity of the sheet steel is computed on the basis of signals of measured radiance each in the plurality of polarization angle components in the plurality of wavelengths and the surface temperature of the heat-resisting material. The surface temperature of the sheet steel is computed on the basis of this emissivity.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种用于测量在退火炉中对经过热处理的钢板的表面温度进行在线连续测量的钢板温度的方法和装置。 解决方案:在红外波长区域具有高发射率的耐热材料嵌入在加热炉的炉壁的一部分中。 在多个偏振角分量中的每一个中测量在钢板表面的来自耐热材料的辐射光的规则反射方向上的多个波长的辐射。 基于多个波长中的多个偏振角分量和耐热材料的表面温度各自测量的辐射度的信号来计算钢板的发射率。 基于该发射率计算钢板的表面温度。 版权所有(C)2007,JPO&INPIT

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