Request InfoEdmund Optics Inc.Edmund Industrial Optics Inc. has introduced fluorescent USAF 1951 resolution targets for calibrating the optics of fluorescence and confocal microscopes of UV-based imaging systems, and of instruments for photolithography and nanotechnology. The targets, constructed of fused silica and reflective chrome, are available in positive and negative patterns. The positive target has a chrome pattern over a clear background with fluorescent material on the front surface. The negative target has a clear pattern with a chrome background and fluorescent material on the back. 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