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Molds and measurements for replicated aspheric lenses for optical recording

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Abstract

The grinding of aspheric molds in hard materials on a CNC lathe is discussed, as well as a stylus technique to measure the shape of these molds. Optical measurements of N.A. = 0.45 lenses replicated with these molds give a rms OPD of <0.030 wavelength at 780 nm.

© 1985 Optical Society of America

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