Optical device for detecting the characteristics of moving particles
    1.
    发明授权
    Optical device for detecting the characteristics of moving particles 失效
    用于检测移动颗粒特性的光学装置

    公开(公告)号:US5978073A

    公开(公告)日:1999-11-02

    申请号:US91180

    申请日:1998-06-10

    摘要: The device uses the principle of the Doppler effect laser velocimeter. It comprises emitter and receiver optic guides formed by integrated optics techniques on a single substrate, preferably made of glass. The emitter guides, connected to a light source, produce two mutually coherent beams inclined with respect to one another in such a way as to constitute interference fringes in a measuring volume situated outside the substrate. The receiver guides transmit the light diffused by the passage of particles in movement through the measuring volume to a detection and processing circuit. The substrate is mounted in a support fixed in an orifice of a wall along which a fluid flows transporting the particles to be examined. The substrate comprises a face which comes into contact with the fluid. This device enables the velocity, size and/or number of particles in movement in a fluid moving along a wall to be determined.

    摘要翻译: PCT No.PCT / FR96 / 00048 Sec。 371日期:1998年6月10日 102(e)1998年6月10日PCT PCT 1996年1月11日PCT公布。 公开号WO97 / 25607 日期1997年7月17日该设备使用多普勒效应激光测速仪的原理。 它包括通过集成光学技术在单个衬底上形成的发射器和接收器光学引导件,优选由玻璃制成。 连接到光源的发射极引导件产生相对于彼此倾斜的两个相互相干的光束,以便在位于衬底外部的测量体积中构成干涉条纹。 接收器引导件将通过测量体积的颗粒通过的光传播到检测和处理电路。 衬底被安装在固定在壁的孔中的支撑件中,流体流过的壁传送要检查的颗粒。 基板包括与流体接触的面。 该装置使得能够沿着要确定的壁移动的流体中的运动中的颗粒的速度,尺寸和/或数量。