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Fringe MasterTM for Windows
version 4.05
Fig. 5: The top level screen after setting the window position
The system is now ready to track the positions of the fringes and to calculate the Optical Path
Difference (OPD) map.
2.1.3 Tracking and analysing fringes
Click on the FindFr “speed button” on the Fringe Master toolbar.
[A Speed button is a menu selectable function that is available from a sub-menu but is
duplicated on the top level screen to facilitate repetitive operations.]
The fringes are tracked and their positions displayed in the top right hand quadrant of the
screen. Follow this by selecting the CalcOPD button. The top level screen will now be redrawn as shown below in Fig. 6.
Fig. 6: Fringes analysed and the OPD calculated & plotted
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© OFA Ltd July 2001