Unit moment analysis as a guide to mirror mount design

Daniel Vukobratovich; Patrick Coronato

doi:10.1117/12.2186438

2 September 2015 Unit moment analysis as a guide to mirror mount design

Proceedings Volume 9573, Optomechanical Engineering 2015; 95730R (2015) https://doi.org/10.1117/12.2186438
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Unit moment analysis minimizes the computational overhead associated with mirror mount design. Since mirrors operate in the linear domain with respect to stress/strain, it is possible to use the principle of superposition to determine overall optical surface deflection from a variety of sources. Surface deflection is calculated by FEA (finite element analysis) when applying unit loads at single mounting point. Deflection coefficients relating moments with surface deflection can be derived from the results of this analysis. These deflection coefficients are then applied, using the principle of superposition, to find the maximum tolerable moments associated with the mirror mount. Finally, manufacturing tolerances as well as environmental effects can be included to determine the required mirror mount compliance. This design approach is applicable to a wide range of mounting types, including classical kinematic and flexure mounts.

Citation Download Citation

Daniel Vukobratovich and Patrick Coronato "Unit moment analysis as a guide to mirror mount design", Proc. SPIE 9573, Optomechanical Engineering 2015, 95730R (2 September 2015); https://doi.org/10.1117/12.2186438

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