Sub Aperture Polishing of Fused Silica Aspheric Surface Using Dwell Time Approach
Aspheric surfaces are the desired surfaces for an optical designer due to their ability to control aberration effects using less number of surfaces. Traditional full aperture polishing methods are not suitable for aspheric surface polishing. The present paper describes the sub aperture polishing of aspheric surface in Fused Silica using dwell time approach. The linear feed rate has been optimized to produce optical quality surface finish using less number of iterations. The surface characterization is done using stylus profilometer and optical profilometer.
KeywordsFeed Rate Material Removal Fuse Silica Material Removal Rate Aspheric Surface
Authors are thankful to Dr. S.S. Negi, Director, IRDE for his support and encouragement for the work. Authors are also thankful to Sh. S.P. Gaba, Scientist-‘G’, for his valuable suggestions.
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