Quantification of crazing in optical components made of glassy polymers is important as crazing degrades a component’s optical performance and mechanical strength. The present work describes a single-beam-based full-field optical crazimeter for imaging and quantification of crazes in transparent samples of plastic using the principles of Fourier optics. A collimated laser beam passes through the sample and acquires information about crazes present in it. A specially designed and fabricated spatial bandpass filter is used in the 4f optical information processing setup to image crazes present in the sample and reject the noise signal. Digital image processing is used to extract quantitative information about craze density from the recorded images. The proposed crazimeter may enable full-field inspection of consumer products made of various transparent plastics for the presence of crazes.

对由玻璃状聚合物制成的光学组件中的裂纹进行量化非常重要，因为裂纹会降低组件的光学性能和机械强度。目前的工作描述了一种基于单光束的全场光学裂纹仪，用于使用傅立叶光学原理对透明塑料样品中的裂纹进行成像和量化。准直激光束穿过样品并获取有关其中存在的裂纹的信息。4 f 中使用了专门设计和制造的空间带通滤波器光学信息处理装置可对样品中存在的裂纹进行成像并抑制噪声信号。数字图像处理用于从记录的图像中提取有关裂纹密度的定量信息。提议的裂纹检测仪可以对由各种透明塑料制成的消费品进行全场检查，以确定是否存在裂纹。