Abstract: An optical field modulation phase imaging experimental teaching system using public multimedia is

developed.The system is composed of auxiliary lighting and image recording.The auxiliary lighting part can be implemented

by the classroom's public multimedia projector.The teaching system can be used to live demonstrations in

the classroom directly.The system uses two different phase demodulation algorithms———four-step phase -shifting

　　and Fourier spectrum analysis methods to realize numerical reconstruction of three-dimensional image，and a software

　　operation interface is written for the two algorithms.The software demonstrates the algorithm process and explained

　　the principle，which makes it easier for students to understand the principle of optical field modulation phase

　　imaging.

Key words: optical field modulation, three-dimensional imaging, phase demodulation, media instruction