From Event: SPIE Optical Engineering + Applications, 2017
The proposed Lynx telescope is an X-ray observatory with Chandra-like angular resolution and about 30 times larger effective area. The technology under development at SAO is based on the deposition of piezoelectric material on the back of glass substrates, used to correct longer wavelength figure errors. This requires a large number (about 8000) of figured segments with sufficient quality to be in the range of correctibility of the actuators. Thermal forming of thin glass offers a convenient approach, being based on intrinsically smooth surfaces (which doesn’t require polishing or machining), available in large quantity and at a low cost from flat display industry. Being a replica technique, this approach is particularly convenient both for development and for the realization of modular/segmented telescopes. In this paper we review the current status and the most recent advances in the thermal forming activities at SAO, and the perspectives for the employment of these substrates for the adjustable X-Ray optics.
Vincenzo Cotroneo, Ryan Allured, Casey T. DeRoo, Kenneth L. Gurski, Vanessa Marquez, Paul B. Reid, and Eric D. Schwartz, "Thermal forming of glass substrates for adjustable optics (Conference Presentation)," Proc. SPIE 10399, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII, 103990Y (Presented at SPIE Optical Engineering + Applications: August 09, 2017; Published: 5 October 2017); https://doi.org/10.1117/12.2275738.
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