Centering steep aspheric surfaces

Robert E. Parks

doi:10.1117/12.2279770

16 October 2017 Centering steep aspheric surfaces

Robert E. Parks

Proceedings Volume 10448, Optifab 2017; 104481G (2017) https://doi.org/10.1117/12.2279770
Event: SPIE Optifab, 2017, Rochester, New York, United States

Abstract

We describe a method of finding the optical axis of an aspheric surface by looking at an annulus of the surface as the surface is rotated in azimuth. The method uses either an autostigmatic microscope or an interferometer to view the annulus. Distinctive features of the reflected spot movement, or the changes in Zernike coefficients found with interferometry while the surface is rotated in azimuth permits the separation of decenter from tilt. The method appears to be suitable for use with any aspheric surface.

Citation Download Citation

Robert E. Parks "Centering steep aspheric surfaces", Proc. SPIE 10448, Optifab 2017, 104481G (16 October 2017); https://doi.org/10.1117/12.2279770

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