Modern Optical Testing

Level: Intermediate Length: 4 hours Format: In-Person Lecture Intended Audience: Engineers and technical managers who are involved with the construction, analysis or use of optical systems will find this material useful. Description: This course describes the basic interferometry techniques used in the evaluation of optical components and optical systems. It discusses interferogram interpretation, computer analysis, and phase-shifting interferometry, as well as various commonly used wavefront-measuring interferometers. The instructor describes specialized techniques such as testing windows and prisms in transmission, 90-degree prisms and corner cubes, measuring index inhomogeneity, and radius of curvature. Testing cylindrical and aspheric surfaces, determining the absolute shape of flats and spheres, and the use of infrared interferometers for testing ground surfaces are also discussed. The course also covers state-of-the-art direct phase measurement interferometers. Learning Outcomes: This course will enable you to: - discuss state-of-the-art direct phase-measurement interferometers - determine if an optics supplier can actually supply the optics you are ordering - test flat and spherical surfaces - better specify optical components and systems - test ground and aspheric surfaces - make absolute measurements - evaluate optical system performance - explain basic interferometry and interferometers for optical testing - analyze interferograms - produce higher-quality optical systems Instructor(s): James C. Wyant is Professor Emeritus of Optical Sciences at the University of Arizona. He is currrently Chairman of the Board of 4D Technology. He was a founder of the WYKO Corporation and served as its president from 1984 to 1997. Dr. Wyant was the 1986 President of SPIE. Event: SPIE Photonics West 2019 Course Held: 04 February 2019