Optical figuring
Grinding and polishing on 8-m annular machines
- 3 machines, serial, 3 x 7 days cycles. Output rate 5 mirrors every 7 days; 10 years production, single shift, 250 days per year.
- excellent repeatability of curvature, low edges effects
- low cost, time-efficient
- all pieces identical, possibility of accurate control of conditioner / drift of table.
Alternative: grinding on annular machine + replication. (needs development, current technology ok up to ~ 1-m)