Scanning SCOTS Measurements for Corrective Optics

The Phase I effort demonstrated our technology called FORM, Flexible Optical Ray Metrology. Our prototype system demonstrated that this technology achieves the precision and dynamic range needed for measuring conformal windows. The Phase I metrology system can now be refined to provide metrology of collaborators conformal windows. We expect this data to enable completion of the polishing of these windows by our collaborators, providing high quality conformal windows for the first time.Our Phase II plan improves and expands the measurements to arch correctors and freeform aspheric surfaces. In year 1, we will develop the technique and software that optimally combines data from FORM measurements, which accurately represents the optical performance, with CMM metrology, which provides the geometry and low order form. We will develop software that allows direct modeling of optical performance of components based on FORM measurements. In year 2, we will develop a scanning system to measure arch correctors and designed with potential to upgrade for measuring full ogive domes. We will measure an arch being polished by our collaborator OptiPro with this system. As an option, we will enhance this system to measure not only transmissive optics, but also to measure surfaces in reflection.