Measuring Radius of Curvature of Optical Surfaces
An essay from Apre Instruments describes the multiple methods used today to measure an optical surface radius: Test plates Mechanical probe Interferometer “Cateye to Confocal” The essay then discusses the benefits of Apre’s Spectrally Controlled Interferometry (SCI) measurement method, including: Easy alignment in laser mode Electronically switch to white light mode to isolate fringes to … Continue reading