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http://hdl.handle.net/20.500.12386/24458
Title: | Evaluation of novel approach to deflectometry for high accuracy optics | Authors: | SIRONI, GIORGIA CANESTRARI, Rodolfo Tayabaly, Kashmira PARESCHI, Giovanni |
Issue Date: | 2016 | Volume: | Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II | Editors: | Navarro, Ramón; Burge, James H. | Series: | PROCEEDINGS OF SPIE | Number: | 9912 | First Page: | 991213 | Abstract: | A deflectometrical facility was developed at Italian National Institute for Astrophysics-OAB to characterize free-form optics with shape errors within few microns rms. Deflectometry is an interesting technique because it allows the fast characterization of free-form optics. The capabilities of deflectometry in measuring medium-high frequencies are well known, but the low frequencies error characterization is more challenging. Our facility design foresees an innovative approach based on the acquisition of multiple direct images to enhance the performance on the challenging low frequencies range. This contribution presents the error-budget analysis of the measuring method and a study of the configuration tolerances required to allow the use of deflectometry in the realization of optical components suitable for astronomical projects with a requirement of high accuracy for the optics. As test examples we took into account mirrors for the E-ELT telescope. | Conference Name: | Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II | Conference Place: | Edinburgh, UK | Conference Date: | 26 June-1 July, 2016 | URI: | http://hdl.handle.net/20.500.12386/24458 | URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9912/1/Evaluation-of-novel-approach-to-deflectometry-for-high-accuracy-optics/10.1117/12.2233328.short | ISSN: | 0277-786X | ISBN: | 9781510602038 | DOI: | 10.1117/12.2233328 | Bibcode ADS: | 2016SPIE.9912E..13S | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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File | Description | Size | Format | |
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2016_991213.pdf | pdf editoriale | 5.81 MB | Adobe PDF | View/Open |
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