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Robust Reference Algorithms for form metrology: Application to aspherical and freeform optics
ENS Cachan, Cachan
Metrology Mathematics (applied) Mechanical Engineering 
Full Description:

This PhD is part of the European Project FreeFORM (Reference algorithms and metrology on aspherical and freeform optical lenses) of the European Metrology Programme for Innovation and Research European (EMPIR) within the scope SI broader. This project is coordinated by the French National Metrology Institute (LNE) and involves 19 worldwide partners around three major subjects:

- Robust reference algorithms for the evaluation of aspherical and freeform surface data
- Innovative reference thermo-invariant standards for aspheres and freeforms
- Improved metrological capabilities of the highest accuracy systems (measurement uncertainty less than 30 nm)

The aim of this thesis is to develop advanced robust least squares (L2) and Min-Max (L∞) reference algorithms that allow to analyse measurement data usually obtained with optical and tactile ultra-high precision measurement machines. Furthermore, the reference  algorithms will be used to guarantee the traceability of existing algorithms at NMIs (National Metrology Institutes), DIs (Designed Institutes), accredited laboratories, research centres, universities and industrials/end users; this traceability hasn’t occurred at present.


Posted on: 09 March 2016Deadline to apply: 30 June 2016Start Date: 01 September 2016 Duration: 36 months
The Fund category is Mixed Funding and the salary is Not Specified
in the Ile-de-France Region.

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