A New Non-Contact Method for Measuring Glass Thickness with Laser Interference

本文提出一种结合激光与计算机实现非接触式测量玻璃等透明物体厚度的新方法。该方法基于迈克尔逊干涉仪，利用转动待测样品造成干涉条纹移动间接测量样品厚度，对器件要求较低，操作简便且不会对待测样品造成损坏。在大学物理实验室条件下，该方法测量精度即可达到0.1 mm。在此基础上，本文还提出了一套封装一体化改进设计方案，有利于提高便携性、测量便利性与精度。 A new non-contact method with laser and computer employed has been proposed in this paper, which could be applied to measure thickness of transparent objects, such as glass. The method, which had lower requirement for components and manual operations, was based on Michelson interferometer and would not cause damage to test samples. Under the conditions of college- physics laboratories, its precision could reach 0.1 mm. In addition, a new set of integrated design scheme, which might help improve equipment portability, measurement convenience and precision, was put forward.