| 摘要 |
The invention concerns a method for making at least a concave relief (124, 145) in a substrate, comprising the following steps: forming at least a boss of flowable material (100), on the substrate (120), heating the flowable material at a temperature sufficient to cause said material to creep, and etching the substrate and the crept material to provide the substrate with a relief. The invention is characterised in that it consists in causing the crept material to be solidified into a state where it exhibits a concave relief.
|
