Non-contact shape meter for flatness measurements
    1.
    发明授权
    Non-contact shape meter for flatness measurements 失效
    用于平面度测量的非接触式形状计

    公开(公告)号:US5781302A

    公开(公告)日:1998-07-14

    申请号:US681166

    申请日:1996-07-22

    CPC classification number: G01B11/306

    Abstract: A shape meter for measuring the deviation from flatness of a moving rolled steel plate is disclosed. The shape meter includes a laser source for generating an illuminated spot on the steel plate. The laser spot must be separable or distinguishable from background radiation emitted by the steel plate. For instance, if the steel plate is hot and the laser source is an argon laser generating blue green light, the optical filter must pass the blue green light and filter the red thermal emissions. The laser light is directed onto the moving steel plate, and a detector measures the light scattered from the steel plate. The detector includes an optical filter, an optical lens, and a lateral effect diode sensor. A computer then calculates and reports the deviation from flatness of the moving rolled steel plate based on the scattered light measured with the lateral effect diode sensor.

    Abstract translation: 公开了一种用于测量移动的轧制钢板的平坦度的偏差的形状计量器。 该形状计包括用于在钢板上产生照明点的激光源。 激光点必须与钢板发射的背景辐射是分离的或可区分的。 例如,如果钢板是热的,激光源是产生蓝绿色的氩激光源,则滤光器必须通过蓝绿色的光并过滤红色的热辐射。 激光被引导到移动的钢板上,检测器测量从钢板散射的光。 检测器包括滤光器,光学透镜和横向效应二极管传感器。 然后,计算机根据用横向效应二极管传感器测量的散射光来计算和报告与移动的轧制钢板的平面度的偏差。

    Multipactor pressure gauge for use as a noninvasive vacuum tube sensor
    3.
    发明授权
    Multipactor pressure gauge for use as a noninvasive vacuum tube sensor 失效
    用于无创真空管传感器的多载体压力表

    公开(公告)号:US4902977A

    公开(公告)日:1990-02-20

    申请号:US295720

    申请日:1989-01-10

    CPC classification number: G01L21/32

    Abstract: A gas ionization type vacuum gauge for testing the internal vacuum levels to below 10.sup.-6 torr is disclosed which uses a multipactor discharge means as the source for the electron current used to ionize residual gas molecules. The invention comprises an RF field enhancing cavity which can be constructed of high-vacuum-compatible materials, able to withstand bake-out microwave temperatures and a negatively biased ion collection wave, wire, or grid. A simple ceramic RF feed-through permits simple and noninvasive pressure measurements. The device can be made much smaller than conventional gauges.

    Abstract translation: 公开了一种用于测试内部真空度至低于10 -6乇的气体离子型真空计,其使用多功能放电装置作为用于电离残余气体分子的电子电流源。 本发明包括RF场增强腔,其可由能够承受烘烤微波温度的高真空兼容材料和负偏压的离子采集波,线或栅格构成。 简单的陶瓷射频馈电允许简单和无创的压力测量。 该装置可以比传统的量规小得多。

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