https://doi.org/10.1051/epjconf/202226610018
Influence of camera temperature on MTF measurements with finite image distance
Physikalisch-Technische-Bundesanstalt, Bundesallee 100, 38116 Braunschweig
* e-mail: markus.schake@ptb.de
** e-mail: michael.schulz@ptb.de
Published online: 13 October 2022
Line Spread Function (LSF) based Modulation Transfer Function (MTF) measurements with finite image distance are sensitive to displacement errors in axial direction. Axial displacements between the sample and camera detector cause defocusing and thus, a MTF error proportional to the axial gradient of the sample’s MTF. This article demonstrates the influence of the camera temperature on the focus position in the MTF reference setup at PTB.
© The Authors, published by EDP Sciences
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