Conference 11889 > Paper 11889-73
Paper 11889-73

High resolution Shack Hartmann wavefront sensor with linearized focal plane technique (LIFT) and its applications

On demand | Presented live 20 October 2021

Abstract

We will present a new approach of linearized focal plane technique (LIFT), formerly developed by ONERA, which results in an improvement of a factor of 16 (4x4) of the spatial resolution. This technology is based on the combination of standard SH technology with phase retrieval algorithms applied on all spots of the microlens array that provides information on high spatial frequencies. We will show some measurements performed on extremely complex wavefronts. This technology presents very promising perspectives for optical and freeform metrology and can advantageously replace, at lower cost and better usability, Fizeau interferometry : insensitivity to vibrations, multi-wavelengths compatibility, lambda/100 accuracy and a wide dynamic range are, in fact, intrinsic characteristics of this technology.

Presenter

Axiom Optics (United States)
Xavier Levecq contributes boundless creativity in the development of ImagineOptic' products. He has developped new wavefront sensors and optical metrology systems that propelled their venture into an international success. He also cofounded Imagine Eyes together with Samuel Bucourt and Nicolas Chateau and designed new cellular scale retinal camera that are used for research in the field of ophthalmology. Earlier, recruited while still at university by CILAS-EADS, Xavier developed high-tech optronic systems for « StarWars » military applications based on advanced space optics technologies. He has authored more than 30 patents.
Author
Imagine Optic SA (France)
Author
Imagine Optic SA (France)
Presenter/Author
Axiom Optics (United States)