Paper published in a journal (Scientific congresses and symposiums)
Deformation measurements by ESPI of the surface of a heated mirror and comparison with numerical model
Languy, Fabian; Vandenrijt, Jean-François; Saint-Georges, Philippe et al.
2017In Proceedings of SPIE: The International Society for Optical Engineering, 103291M
 

Files


Full Text
2017-SPIE-Deformation measurements by ESPI of the surface of a heated mirror and comparison with numerical model.pdf
Publisher postprint (2.67 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
speckle; ESPI
Abstract :
[en] The manufacture of mirrors for space application is expensive and the requirements on the optical performance increase over years. To achieve higher performance, larger mirrors are manufactured but the larger the mirror the higher the sensitivity to temperature variation and therefore the higher the degradation of optical performances. To avoid the use of an expensive thermal regulation, we need to develop tools able to predict how optics behaves with thermal constraints. This paper presents the comparison between experimental surface mirror deformation and theoretical results from a multiphysics model. The local displacements of the mirror surface have been measured with the use of electronic speckle pattern interferometry (ESPI) and the deformation itself has been calculated by subtracting the rigid body motion. After validation of the mechanical model, experimental and numerical wave front errors are compared.
Research center :
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Physics
Author, co-author :
Languy, Fabian ;  Université de Liège > CSL (Centre Spatial de Liège)
Vandenrijt, Jean-François  ;  Université de Liège > CSL (Centre Spatial de Liège)
Saint-Georges, Philippe
Georges, Marc ;  Université de Liège > CSL (Centre Spatial de Liège)
Language :
English
Title :
Deformation measurements by ESPI of the surface of a heated mirror and comparison with numerical model
Publication date :
26 June 2017
Event name :
SPIE Optical Metrology
Event organizer :
SPIE
Event place :
Munich, Germany
Event date :
du 26 juin au 29 juin 2017
Audience :
International
Journal title :
Proceedings of SPIE: The International Society for Optical Engineering
ISSN :
0277-786X
eISSN :
1996-756X
Publisher :
International Society for Optical Engineering, Bellingham, United States - Washington
Special issue title :
Proceedings Volume 10329, Optical Measurement Systems for Industrial Inspection X;
Volume :
103291M
Name of the research project :
Socoev
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
Available on ORBi :
since 23 August 2017

Statistics


Number of views
71 (12 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
1
Scopus citations®
without self-citations
1
OpenCitations
 
1

Bibliography


Similar publications



Contact ORBi