Developments in the finishing of domes and conformal optics

Aric B. Shorey; William Kordonski; Justin Tracy; Marc Tricard

doi:10.1117/12.717584

2 May 2007 Developments in the finishing of domes and conformal optics

Aric B. Shorey, William Kordonski, Justin Tracy, Marc Tricard

Proceedings Volume 6545, Window and Dome Technologies and Materials X; 65450Q (2007) https://doi.org/10.1117/12.717584
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

The final finish and characterization of windows and domes presents a number of difficult challenges. Furthermore, there is a desire to incorporate conformal shapes into next generation imaging and surveillance systems to provide significant advantages in overall component performance. Unfortunately, their constantly changing curvature and steep slopes make fabrication of such shapes incompatible with most conventional polishing and metrology solutions. Two novel types of polishing technology, Magnetorheological Finishing (MRF®) and Magnetorheological Jet (MR Jet^TM), along with metrology provided by the Sub-aperture Stitching Interferometer (SSI®) have several unique attributes that give them advantages in enhancing fabrication of hemispherical domes and even conformal shapes. The advantages that MRF brings to the precision finishing of a wide range of shapes such as flats, spheres (including hemispheres), cylinders, aspheres and even freeform optics, has been well documented. The recently developed MR Jet process provides additional benefits, particularly in the finishing the inside of steep concave domes and other irregular shapes. Combining these technologies with metrology techniques, such as the SSI, provides a solution for finishing current and future windows and domes. Recent exciting developments in the finishing of such shapes with these technologies will be presented. These include new advances such as the ability to use the SSI to characterize a range of shapes such as domes and aspheres, as well as progress in using MRF and MR Jet for finishing conventional and conformal windows and domes.

Citation Download Citation

Aric B. Shorey, William Kordonski, Justin Tracy, and Marc Tricard "Developments in the finishing of domes and conformal optics", Proc. SPIE 6545, Window and Dome Technologies and Materials X, 65450Q (2 May 2007); https://doi.org/10.1117/12.717584

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