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Proceedings Paper

Mechanical alignment of optical system: CMMs forces and damages on optical elements
Author(s): M. Aliverti; G. Pariani; M. Riva; B. Saggin; M. Tarabini
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Paper Abstract

Traditional alignment techniques for optical systems are usually based on iterative procedures where each optical element is positioned and aligned with push-pull systems and the feedback is provided by the images acquired on the focal planes. The long-term stability of those optomechanical mounts can be critical and, In order to overcome this limitation a new mounting has been proposed together with a new alignment strategy based on the direct mechanical measurement of the optical surfaces. The contact between the probe and the surfaces of the optics can be a critical point and lead to different alignment strategies. In this paper, the forces applied by different Coordinate Measuring Machines (CMMs) will be presented together with a derived theoretical model. Moreover, the results of the damage tests performed on different optical elements will be shown and some general prediction rule will be presented.

Paper Details

Date Published: 10 July 2018
PDF: 17 pages
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107064M (10 July 2018); doi: 10.1117/12.2313833
Show Author Affiliations
M. Aliverti, INAF - Osservatorio Astronomico di Brera (Italy)
Politecnico di Milano (Italy)
G. Pariani, INAF - Osservatorio Astronomico di Brera (Italy)
M. Riva, INAF - Osservatorio Astronomico di Brera (Italy)
B. Saggin, Politecnico di Milano (Italy)
M. Tarabini, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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