Applied Science Innovations proposes development of metrology on corrective optics for aerodynamic domes using the improved Interferometric Tomography, building directly on ASI's successful development of a new tool for metrology on conformal aspheric windows, domes and corrector optics. The proposed improved Interferometric Tomography system is a modular attachment for integrating a standard commercial interferometer with an existing optical fabrication tool. The proposed new design will enable measurement of corrective optics for aerodynamic domes, in a common fabrication process to ensure that the window is finished to specification. Phase I will demonstrate techniques of measuring a corrector element with dimensions on the order of 50 x 125 mm, with the goal for optical figure accuracy 0.5 wavelength peak-to-valley deviation at 633 nm over the entire clear aperture of the part, to be demonstrated possibly on a half arch. In Phase II, the same goal will be achieved over the entire clear aperture of the part. Phase III will produce a commercial process capable of measuring corrective optics for aerodynamic domes and conformal windows with arbitrary shapes and optical figure similar to that of Phase II, but with areas on the order of 750 x 750 mm.
Benefit: Conformal windows with corrective optics could be used for synthetic vision systems on commercial aircraft. These windows could increase the pilots field of regard and might be used in locations that would not be suitable for flat windows.
Keywords: corrector optics, corrector optics, optical fabrication, Infrared Imager, Optical Finishing, metrology, aerodynamic dome
