Phasics offers an exclusive lens measurement principle in single pass. The optical setup to perform lens quality control is very simple; the wavefront is directly measured with no relay lens. Calculations then use light propagation theory to provide both wavefront aberrations and the MTF. The MTF is obtained in a single shot at any frequency without using a target or any scanning. All wavefront aberrations are also provided with this single acquisition.
AdvantagesAccurate and reproducible results- 0.5% MTF precision
- 20 nm RMS OPD accuracy
- < 0.05% distortion repeatability
Simple measurement setup- Direct setup: no relay lens, no null lens
- Automatic sample alignment
- Automatic wavelength switch
Complete qualification- On and off axis MTF and TF MTF
- Multiple wavelengths
- OPD in the exit pupil
Accurate and reproducible results- 0.5% MTF precision
- 20 nm RMS OPD accuracy
- < 0.05% distortion repeatability