Quality Assurance of Precision Optics: Shadowgraphs

This video, published by the National Center for Optics and Photonics Education (OP-TEC), is from module one of the Quality Assurance of Precision Optics course, which "provides an introduction to quality assurance practices required to identify, inspect, and measure optical components." During the video, the narrator demonstrates how to use shadowgraphing to identify and measure non-uniformities, such as striae cracks and inclusions, in clear materials. The narrator analyzes two different optical windows and provides an equation used to measure the size of a striae. Other materials are briefly tested.

This video runs 3:26 minutes in length. Other videos from Quality Assurance of Precision Optics are available to view separately.