4 March 2013 Cold-shaping of thin glass foils as a method for mirror processing: from basic concepts to mass production of mirrors
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Abstract
We present a method for the production of segmented optics. It is a process developed at INAF-Osservatorio Astronomico di Brera (INAF-OAB) employing commercial of-the-shelf materials. It is based on the shaping of thin glass foils by means of forced bending that occurs at room temperature [cold-shaping (CS)]. The glass is then assembled into a sandwich structure for retaining the imposed shape. The principal mechanical features of the mirrors are their low weight, rigidity and environmental robustness. The cost and production time also are competitive. We sum up the results achieved during research and development performed in the past years. We have investigated the theoretical limits of the structural components by means of parametric finite elements analyses; we also discuss the effects caused by the most common structural loads. Finally, the process implementation, the more significant validation tests and the mass production at the industry are described.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Rodolfo Canestrari, Rodolfo Canestrari, Giovanni Pareschi, Giovanni Pareschi, Giancarlo Parodi, Giancarlo Parodi, Francesco Martelli, Francesco Martelli, Nadia Missaglia, Nadia Missaglia, Robert Banham, Robert Banham, } "Cold-shaping of thin glass foils as a method for mirror processing: from basic concepts to mass production of mirrors," Optical Engineering 52(5), 051204 (4 March 2013). https://doi.org/10.1117/1.OE.52.5.051204 . Submission:
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