Method of Measuring Fictive Temperature of Optical Glass
    1.
    发明申请
    Method of Measuring Fictive Temperature of Optical Glass 审中-公开
    光学玻璃的假想温度测量方法

    公开(公告)号:US20130103342A1

    公开(公告)日:2013-04-25

    申请号:US13805339

    申请日:2011-06-30

    IPC分类号: G01N25/00

    摘要: A heat treatment is performed at different temperatures for a plurality of calibration-line forming optical glass samples that can be considered as having the same composition as optical glass to be measured, any one of the longitudinal wave velocity, the LSAW velocity and the shear wave velocity of the samples is measured as an acoustic property AP1, and a relationship between the fictive temperature Tf and the acoustic property AP1 is determined in the form of approximate straight line formula on the assumption that the heat treatment temperature is regarded as the fictive temperature Tf in a range where the heat treatment temperature and the acoustic property AP1 are in a linear relationship. The acoustic property AP1 of the optical glass to be measured is measured, and the fictive temperature is calculated from the measured acoustic property AP1 according to the approximate straight line formula.

    摘要翻译: 对于可以被认为具有与要测量的光学玻璃相同的组成的多个校准线形成光学玻璃样品在不同温度下进行热处理,纵波速度,LSAW速度和剪切波中的任一个 测量样品的速度作为声学特性AP1,并且假定热处理温度被认为是假想温度Tf,则以近似直线公式的形式确定假想温度Tf和声学特性AP1之间的关系 在热处理温度和声学特性AP1处于线性关系的范围内。 测量被测量的光学玻璃的声学特性AP1,并根据近似的直线公式从测量的声学特性AP1计算出假想温度。

    Ultrasonic microscope system
    2.
    发明授权
    Ultrasonic microscope system 失效
    超声波显微镜系统

    公开(公告)号:US4541281A

    公开(公告)日:1985-09-17

    申请号:US595865

    申请日:1984-04-02

    摘要: An ultrasonic transmitter-receiver for radiating a focused ultrasonic beam and a sample are moved relative to each other in the axial direction of the ultrasonic beam. A reflected wave from the sample is received and a curve V(Z) of variations in the level of the reflected wave with respect to the relative movement is obtained. A reference level of interference of a directly reflected wave and a leaky elastic wave is subtracted from V(Z) to perform waveform processing. The waveform processing output is subjected to a waveform analysis, and from the analysis results, the velocity and/or the attenuation of the leaky elastic wave are calculated.

    摘要翻译: 用于照射聚焦超声波束和样品的超声波发射器 - 接收器在超声波束的轴向上相对于彼此移动。 接收来自样品的反射波,并且获得相对于相对运动的反射波电平的变化曲线V(Z)。 从V(Z)中减去直接反射波和泄漏弹性波的参考电平,进行波形处理。 对波形处理输出进行波形分析,并从分析结果计算泄漏弹性波的速度和/或衰减。

    Acoustic microscope using line-focus acoustic beam
    4.
    发明授权
    Acoustic microscope using line-focus acoustic beam 失效
    声学显微镜使用线聚焦声束

    公开(公告)号:US4459852A

    公开(公告)日:1984-07-17

    申请号:US395711

    申请日:1982-07-06

    CPC分类号: G01H3/125 G01N29/06 G10K11/26

    摘要: An acoustic microscope using a line-focus acoustic beam is disclosed. The line-focus acoustic beam is generated by an acoustic transducer head having an acoustic transducer electrode applied on a flat end surface of a sapphire rod, in the opposite end surface is formed a cylindrical concave surface. The acoustic transducer head is arranged fixedly above a mechanical stage on which a specimen is placed. The mechanical stage is movable in a Z axis, i.e. an axis of the line-focus acoustic beam and is also rotatable about the Z axis. By moving the stage in the Z-axis, a V(z) curve is obtained and a phase velocity of a leaky surface-acoustic wave is calculated from a repetition period of the V(z) curve. Then the V(z) curve measurement is repeated while the stage is rotated, and it is possible to obtain anisotropies of the specimen expressed by a relation between the rotational angle and the phase velocity of the leaky surface-acoustic wave.

    摘要翻译: 公开了使用线聚焦声束的声学显微镜。 线聚焦声束由具有施加在蓝宝石棒的平坦端面上的声换能器电极的声换能器头产生,在相反的端面形成圆柱形凹面。 声学换能器头部固定地布置在其上放置试样的机械台上。 机械平台可以在Z轴上移动,即线对焦声束的轴线,并且也可围绕Z轴旋转。 通过在Z轴上移动台,获得V(z)曲线,并从V(z)曲线的重复周期计算泄漏表面声波的相位速度。 然后在阶段旋转的同时重复V(z)曲线测量,并且可以获得由泄漏表面声波的旋转角度和相位速度之间的关系表示的样本的各向异性。

    Method for Producing Ulta-Low-Expansion Glass
    6.
    发明申请
    Method for Producing Ulta-Low-Expansion Glass 审中-公开
    生产乌尔低膨胀玻璃的方法

    公开(公告)号:US20120289393A1

    公开(公告)日:2012-11-15

    申请号:US13575290

    申请日:2011-02-24

    IPC分类号: C03B20/00 C03C3/04

    摘要: A TiO2—SiO2 glass ingot having a desired TiO2 concentration is fabricated, a sample is cut from the TiO2—SiO2 glass ingot, OH concentration C(OH), TiO2 concentration C(TiO2) and fictive temperature TF of the sample are measured, and zero-CTE temperature T(zero-CTE) is calculated from the measured C(OH), C(TiO2) and TF. A judgment is made as to whether the difference ΔT between the zero-CTE temperature T(zero-CTE) and a target value is within a predetermined range. When the difference ΔT is within the predetermined range, it is judged that the TiO2—SiO2 glass ingot has a desired zero-CTE temperature; when the difference ΔT is not within the range, a production condition for the TiO2—SiO2 glass ingot is corrected on the basis of the difference ΔT.

    摘要翻译: 制备具有所需TiO 2浓度的TiO 2 -SiO 2玻璃锭,从TiO 2 -SiO 2玻璃锭切割样品,测量样品的OH浓度C(OH),TiO 2浓度C(TiO 2)和假想温度TF, 零CTE温度T(零CTE)由测量的C(OH),C(TiO2)和TF计算。 判断零CTE温度T(零CTE)与目标值之间的差Dgr T是否在预定范围内。 当差值Dgr; T在预定范围内时,判断为TiO 2 -SiO 2玻璃锭具有所需的零CTE温度; 当差值Dgr; T不在该范围内时,基于差值Dgr; T来校正TiO 2 -SiO 2玻璃锭的生产条件。

    Evaluation method for coefficient of thermal expansion of ultra-low-expansion glass material
    7.
    发明申请
    Evaluation method for coefficient of thermal expansion of ultra-low-expansion glass material 有权
    超低膨胀玻璃材料热膨胀系数的评价方法

    公开(公告)号:US20060028096A1

    公开(公告)日:2006-02-09

    申请号:US11195945

    申请日:2005-08-02

    IPC分类号: H01L41/107

    摘要: By measuring, for an ultra-low-expansion glass material, the frequency dependence of acoustic velocities and attenuation coefficients of bulk waves (longitudinal waves and shear waves), and the density, its fundamental acoustic properties are revealed, and a standard specimen for use in system calibration is prepared. By an absolute calibration method using the standard specimen, absolute values for both the LSAW and LSSCW velocities are obtained. Moreover, there are obtained relationships for the acoustic properties and the coefficient of thermal expansion to evaluate the coefficient of thermal expansion from the acoustic properties. In case there is a distribution of characteristics due to periodic striae, an accurate acoustic property distribution in the substrate can be ascertained and an evaluation performed, by selecting for the substrate a cutting angle with respect to the striae plane.

    摘要翻译: 通过测量超低膨胀玻璃材料,可以看出声波的频率依赖性和体波(纵波和剪切波)的衰减系数及其密度,其基本声学特性,以及使用的标准试样 在系统校准中准备。 通过使用标准样品的绝对校准方法,可以获得LSAW和LSSCW速度的绝对值。 此外,获得声学性质和热膨胀系数的关系以从声学性质评估热膨胀系数。 在由于周期性条纹而导致的特性分布的情况下,可以确定基板中的精确的声学特性分布,并且通过选择基板相对于条纹平面的切割角来进行评估。