Optical metrology of adaptive membrane mirrors

John W. Wagner; Gregory S. Agnes

doi:10.1117/12.436532

16 August 2001 Optical metrology of adaptive membrane mirrors

John W. Wagner, Gregory S. Agnes

Proceedings Volume 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems; (2001) https://doi.org/10.1117/12.436532
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

A membrane primary mirror in a space-based imaging system has the ability to overcome current payload constraints and meet evolutionary needs of the future. The challenge of membrane optics in space is the process of implementing adaptive optics technology to the membrane surface that will provide at least rough order of magnitude imaging, where small aberrations can be removed downstream in the system. The objective of this research was to develop a system to categorize surface properties of optical quality membrane material with the ability to interpret membrane mirror deformation. Coincident with this objective was the design and construction of membrane mirrors and associated test tooling, the design and application of in-plane zonal control for piezopolymer actuated membrane mirrors, and mirror deformation analysis. The system provides wavefront analysis with both optical interferometry and Shack-Hartmann wavefront sensing, with good correlation, which compares favorably to Zygo interferometer data. Results from membrane static testing will be presented. They demonstrate deflection of tens of wavelengths is possible.

Citation Download Citation

John W. Wagner and Gregory S. Agnes "Optical metrology of adaptive membrane mirrors", Proc. SPIE 4327, Smart Structures and Materials 2001: Smart Structures and Integrated Systems, (16 August 2001); https://doi.org/10.1117/12.436532

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