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Proceedings Paper

Modeling of optical aberrations due to thermal deformation using finite element analysis and ray-tracing
Author(s): Tobias Bonhoff; Lasse Büsing; Jochen Stollenwerk; Peter Loosen
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Paper Abstract

Thermo-optical simulation is an important extension of classical ray-tracing because many applications, especially in laser technology, have to deal with thermal effects. This paper discusses an approach for modeling thermally induced surface deformations of rotational symmetric optical systems: the discrete deformation data generated by Finite Element Analysis (FEA) are approximated using a global even polynomial which is then transferred to the ray-tracing. The implemented algorithm is validated by comparing approximated data to an analytic deformation function. Finally, the benefit of modeling the temperature dependent refractive index and the thermal deformation is demonstrated using the example of a plastic lens.

Paper Details

Date Published: 23 September 2015
PDF: 10 pages
Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96261V (23 September 2015); doi: 10.1117/12.2190879
Show Author Affiliations
Tobias Bonhoff, RWTH Aachen Univ. (Germany)
Lasse Büsing, RWTH Aachen Univ. (Germany)
Jochen Stollenwerk, RWTH Aachen Univ. (Germany)
Fraunhofer-Institut für Lasertechnik (Germany)
Peter Loosen, RWTH Aachen Univ. (Germany)
Fraunhofer-Institut für Lasertechnik (Germany)


Published in SPIE Proceedings Vol. 9626:
Optical Systems Design 2015: Optical Design and Engineering VI
Laurent Mazuray; Rolf Wartmann; Andrew P. Wood, Editor(s)

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