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Time-resolved characterization of stray light
Clermont, Lionel; Uhring, Wilfried; Georges, Marc
2021In Lehmann, Peter (Ed.) Optical Measurement Systems for Industrial Inspection XII
 

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Keywords :
Light-characterization; Optical path lengths; Time-resolved characterization
Abstract :
[en] Traditional approach to stray light characterization is intrinsically limited. While the stray light level in an optical instrument can be measured, it is not possible to derive from experimental measurements the origin of the different features. Consequently, when unexpectedly high stray light is present, it is extremely difficult to find how to improve the system. In this paper, we introduce a new method where a pulsed laser and an ultra-fast sensor is used. As different stray light contributors have different optical path lengths, they reach the detector at different times and resolving them temporally allows to measure them separately. Their origin can be retrieved by using the optical path length as a mean of identification. We present the conceptual study and the experimental proof of concept of this new method. We were able to characterize individually the different stray light components in an imaging system and determine their origin. We show how the measurements allow to reverse engineer the instrument properties and even verify sub-system requirements.
Disciplines :
Physics
Author, co-author :
Clermont, Lionel ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Uhring, Wilfried;  University of Strasbourg, ICube Research Institute, Strasbourg Cedex, France
Georges, Marc ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Language :
English
Title :
Time-resolved characterization of stray light
Publication date :
2021
Event name :
Optical Measurement Systems for Industrial Inspection XII
Event organizer :
SPIE
Event place :
Virtual, Online, Deu
Event date :
21-06-2021 => 25-06-2021
Audience :
International
Main work title :
Optical Measurement Systems for Industrial Inspection XII
Editor :
Lehmann, Peter
Publisher :
SPIE
ISBN/EAN :
978-1-5106-4398-7
Pages :
1178209
Funders :
The Society of Photo-Optical Instrumentation Engineers (SPIE)
Funding text :
This work was funded by CSL-Research. The authors would like to thank the company Optronis GmbH for providing the streak camera Optoscope SC-10.This work was funded by CSL-Research. The authors would like to thank the company Optronis GmbH streak camera Optoscope SC-10.
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since 20 December 2022

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