
327Surface Manufacturing and Treatment
Chapter 12
Postpolishing treatments to eliminate surface defects can be applied locally or more
generally over the entire optic component. Local application typically gives rise to mod-
ications in the other qualities of the component, such as its atness, and is not widely
used by manufacturers.
12.2.3.3 Roughness
e previous section presented a few examples of damage precursors (subsurface
defects), which are extremely localized and oen related to manufacturing incidents,
the frequency of which varies depending on the techniques used and their implementa-
tion. Nevertheless, the manufacturing technique also ...