Developments in precision optical grinding technology

Edward Fess; Mike Bechtold; Frank Wolfs; Rob Bechtold

doi:10.1117/12.2029334

15 October 2013 Developments in precision optical grinding technology

Edward Fess, Mike Bechtold, Frank Wolfs, Rob Bechtold

Proceedings Volume 8884, Optifab 2013; 88840L (2013) https://doi.org/10.1117/12.2029334
Event: SPIE Optifab, 2013, Rochester, New York, United States

Abstract

Optical systems that utilize complex optical geometries such as aspheres and freeform optics require precise control through the manufacturing process. As the preparatory stage for polishing, this is especially true for grinding. The quality of the grinding process can greatly influence the polishing process and the resultant finished product. OptiPro has performed extensive development work in evaluating components of a precision grinding machine to determine how they influence the overall manufacturing process. For example, spindle technology has a strong effect on how a grinding machine will perform. Through metrology techniques that measure the vibration characteristics of a machine and measurements of grinding forces with a dynamometer, OptiPro has also developed a detailed knowledge of how the machine can influence the grinding process. One of the outcomes of this work has led OptiPro to develop an ultrasonic head for their grinding platform to aid in reducing grinding forces. Initial results show a reduction in force by ~50%.

Citation Download Citation

Edward Fess, Mike Bechtold, Frank Wolfs, and Rob Bechtold "Developments in precision optical grinding technology", Proc. SPIE 8884, Optifab 2013, 88840L (15 October 2013); https://doi.org/10.1117/12.2029334

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