Method and system for high speed measuring of microscopic targets
    10.
    发明授权
    Method and system for high speed measuring of microscopic targets 失效
    用于高速测量微观目标的方法和系统

    公开(公告)号:US06181425B2

    公开(公告)日:2001-01-30

    申请号:US09419586

    申请日:1999-10-18

    IPC分类号: G01B1124

    摘要: A system including confocal and triangulation-based scanners or subsystems provides data which is both acquired and processed under the control of a control algorithm to obtain information such as dimensional information about microscopic targets which may be “non-cooperative.” The “non-cooperative” targets are illuminated with a scanning beam of electromagnetic radiation such as laser light incident from a first direction. A confocal detector of the electromagnetic radiation is placed at a first location for receiving reflected radiation which is substantially optically collinear with the incident beam of electromagnetic radiation. The system includes a spatial filter for attenuating background energy. The triangulation-based subsystem also includes a detector of electromagnetic radiation which is placed at a second location which is non-collinear with respect to the incident beam. This detector has a position sensitive axis. Digital data is derived from signals produced by the detectors. In this way, data from at least one triangulation-based channel is acquired in parallel or sequentially with at least one slice of confocal image data having substantially perfect temporal and spatial registration with the triangulation-based sensor data. This allows for fusion or further processing of the data for use with a predetermined measurement algorithm to thereby obtain information about the targets.

    摘要翻译: 包括基于共焦和三角测量的扫描仪或子系统的系统提供在控制算法的控制下获取和处理的数据,以获得关于可能是“非合作”的微观目标的尺寸信息。 “非协同”目标用诸如从第一方向入射的激光的电磁辐射扫描束照射。 电磁辐射的共焦检测器被放置在第一位置,用于接收与入射的电磁辐射束基本上光学共线的反射辐射。 该系统包括用于衰减背景能量的空间滤波器。 基于三角测量的子系统还包括电磁辐射检测器,其被放置在相对于入射光束非共线的第二位置。 该检测器具有位置敏感轴。 数字数据源自由检测器产生的信号。 以这种方式,来自至少一个基于三角测量的信道的数据被并行或顺序地与具有基于三角测量的传感器数据具有基本上完美的时间和空间配准的共焦图像数据的至少一个切片获取。 这允许融合或进一步处理与预定测量算法一起使用的数据,从而获得关于目标的信息。