Table 1 Allocated cycle time in manufacturing the ⌀4.03 m SiC aspheric mirror

From: Challenges and strategies in high-accuracy manufacturing of the world’s largest SiC aspheric mirror

Process

Generating

Grinding

Cladding

Polishing

Coating

Cycle Time (weeks)

30a

32b

14c

22

4

  1. aGenerating process includes optical surfacing phase and mechanical surfacing phase
  2. bGrinding process includes loose abrasive grinding and coarse polishing on SiC substrate surface
  3. cCladding process includes mirror cleaning and Si layer overcoating
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