Figures & data
Figure 1 Schematic setup of the Tilted-Wave-Interferometer.
Figure 2 Modulo 2π phase maps calculated from the black-box model and the nominal asphere shape, with aperture array in positions 1–4 as obtained in a measurement of the TWI. (The wavelength for the calculation of the phase maps was increased for better visualization by a factor of 10).
Figure 3 Measurement of aspheric surface obtained by TWI (left) and comparison measurement obtained by UA3P CMM (right).
Figure 4 Measurement of diamond turned free-form surface with diamond turning marks clearly visible in the measurement.
