11 October 2015 Developments in precision asphere manufacturing
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Proceedings Volume 9633, Optifab 2015; 96330H (2015) https://doi.org/10.1117/12.2195950
Event: SPIE Optifab, 2015, Rochester, New York, United States
Abstract
The increased use of aspheres in today’s optical systems has led to specialized manufacturing equipment and processes that are needed to meet component specifications. Due to their sub-aperture nature, each stage of these processes can leave behind a signature that could adversely affect the asphere's overall performance. Utilizing a variety of grinding and polishing techniques can help minimize residual artifacts that are left in an asphere.

OptiPro has performed extensive process development work to understand how to grind and polish aspheres at production speeds with minimized process signatures. For example, the amount of stock removed from a substrate using a sub aperture polishing process can increase the amount of mid-spacial frequencies that can be detected. Through precise grind control, sub aperture, and mid-aperture polishing process research, OptiPro developed a detailed knowledge of asphere process control. One of the outcomes of this work has led OptiPro to develop an asphere polishing head for their 160A polishing platform which allows more process flexibility and control.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jay Tierson, Jay Tierson, Ed Fess, Ed Fess, Greg Matthews, Greg Matthews, } "Developments in precision asphere manufacturing", Proc. SPIE 9633, Optifab 2015, 96330H (11 October 2015); doi: 10.1117/12.2195950; https://doi.org/10.1117/12.2195950
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