Fig. 1. Flow chart of optics aspheric elements processing chain

Fig. 2. Commercial instruments for large aperture aspheric measurement. (a) ZEISS XENOS; (b) Leitz Infinity; (c) PGI Dimension

Fig. 3. Swing-arm profilometer

Fig. 4. Flow chart of the compensation grinding for aspheric surface

Fig. 5. Device of large-diameter aspheric grinding on-machine measurement[28]

Fig. 6. Measurement results of (a) visible light interferometer and (b) CO2 infrared interferometer

Fig. 7. Profile scanning measuring devices of Cranfield University

Fig. 8. 3D profile error of aspheric surface

Fig. 9. Non-contact scanning measuring instruments. (a) Nanomefos; (b) Luphoscan