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Proceedings Paper

Analysis of the influence of the workpiece self-weight in precision optics manufacturing using FEM simulation
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Paper Abstract

In this publication the effects, the extent and the importance of the deformation of a workpiece, in particular of lenses, caused by its own weight, before and during the manufacturing process in precision optics are examined. Since the deformations move in the single-digit to two-digit nanometer range, the investigation is carried out in a first step with FEM calculations. This has the advantage that current situations can be quickly interpreted and improved, without having to carry out time-consuming and cost-intensive experiments from the outset. A major part of the work is therefore the investigation of current workpiece holder and clamping situations in optics manufacturing.

The present work concentrates exclusively on the theoretical calculation of the deformations occurring in various clamping situations, which are traced back to reality.

Ansys Workbench is used as a tool for the calculations. The test series under laboratory conditions for the validation of the theoretical results will be part of further work.

Paper Details

Date Published: 15 June 2017
PDF: 14 pages
Proc. SPIE 10326, Fourth European Seminar on Precision Optics Manufacturing, 103260O (15 June 2017); doi: 10.1117/12.2273023
Show Author Affiliations
Sebastian Sitzberger, Deggendorf Institute of Technology (Germany)
Christian Trum, Deggendorf Institute of Technology (Germany)
Rolf Rascher, Deggendorf Institute of Technology (Germany)

Published in SPIE Proceedings Vol. 10326:
Fourth European Seminar on Precision Optics Manufacturing
Oliver W. Fähnle; Rolf Rascher; Christine Wünsche, Editor(s)

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